CN101216646B - LCD device with uniform feed-through voltage - Google Patents

Abstract

Translated fromChinese

本发明公开了一种具均匀馈通电压的液晶显示装置，包含：多条数据线，用以接收多个数据信号；多条栅极线，用以接收多个栅极信号；多条共同电极线，用以接收共同电压；多个储存单元，每一个储存单元包含第一液晶电容及第二液晶电容，耦合于相对应共同电极线；多个第一开关，每一个第一开关耦合于相对应数据线、相对应栅极线及相对应第一液晶电容；以及多个第二开关，每一个第二开关耦合于相对应栅极线、相对应第一开关及相对应第二液晶电容。第一开关的栅源电容的电容值大于第二开关的栅源电容的电容值。

The invention discloses a liquid crystal display device with a uniform feed-through voltage, comprising: a plurality of data lines for receiving a plurality of data signals; a plurality of gate lines for receiving a plurality of grid signals; a plurality of common electrodes lines for receiving a common voltage; a plurality of storage units, each of which includes a first liquid crystal capacitor and a second liquid crystal capacitor, coupled to a corresponding common electrode line; a plurality of first switches, each of which is coupled to a phase Corresponding to the data line, corresponding to the gate line and corresponding to the first liquid crystal capacitor; and a plurality of second switches, each second switch is coupled to the corresponding gate line, corresponding to the first switch and corresponding to the second liquid crystal capacitor. The capacitance value of the gate-source capacitance of the first switch is greater than the capacitance value of the gate-source capacitance of the second switch.

Description

Translated fromChinese

具均匀馈通电压的液晶显示装置Liquid crystal display device with uniform feedthrough voltage

技术领域technical field

本发明涉及一种液晶显示装置，尤其涉及一种具均匀馈通电压的液晶显示装置。The invention relates to a liquid crystal display device, in particular to a liquid crystal display device with a uniform feed-through voltage.

背景技术Background technique

液晶显示装置具有外型轻薄、耗电量少以及无辐射污染等特性，因此已被广泛地应用于计算机屏幕、行动电话、个人数字助理(PDA)、平面电视等电子产品上。液晶显示装置通常具有夹置于两片基板之间的液晶材料层，通过改变液晶材料层两端的电位差，即可改变液晶材料层内液晶分子的旋转角度，使得液晶材料层的透光性改变而显示出不同的影像。Liquid crystal display devices have the characteristics of light and thin appearance, low power consumption, and no radiation pollution, so they have been widely used in electronic products such as computer screens, mobile phones, personal digital assistants (PDAs), and flat-screen TVs. A liquid crystal display device usually has a liquid crystal material layer sandwiched between two substrates. By changing the potential difference between the two ends of the liquid crystal material layer, the rotation angle of the liquid crystal molecules in the liquid crystal material layer can be changed, so that the light transmittance of the liquid crystal material layer can be changed. Instead, different images are displayed.

一般而言，为使液晶显示装置具有广视角的特性，在一像素内会设计两个子像素，相对应于两子像素的两条伽玛曲线(Gamma Curve，也称为灰阶曲线)，经由灰阶平均效应，可在不同视角产生最佳视觉效果，即具有高质量广视角特性。然而，在液晶显示装置的数据信号驱动操作中，执行对两个子像素的液晶电容的充电程序时，会导致不同的馈通电压值，屏幕显示因而发生闪烁及色偏现象。为解决闪烁及色偏现象，可使用两条不同的共同电极线，分别对两个子像素的液晶电容的不同馈通电压值作补偿处理，但液晶显示装置的驱动模块及控制线路会更复杂，因而显著增加生产成本。此外，不同馈通电压值也会降低像素的可利用电压范围，即降低像素可显示的有效对比范围。Generally speaking, in order to make the liquid crystal display device have the characteristics of wide viewing angle, two sub-pixels are designed in one pixel, corresponding to two gamma curves (Gamma Curve, also called grayscale curve) of the two sub-pixels, through The gray scale average effect can produce the best visual effect at different viewing angles, that is, it has the characteristics of high quality and wide viewing angle. However, in the data signal driving operation of the liquid crystal display device, when the liquid crystal capacitors of the two sub-pixels are charged, different feed-through voltage values will be caused, and flicker and color shift will occur in the screen display. In order to solve the phenomenon of flicker and color shift, two different common electrode lines can be used to compensate the different feed-through voltage values of the liquid crystal capacitors of the two sub-pixels, but the driving module and control circuit of the liquid crystal display device will be more complicated. Thus, the production cost is significantly increased. In addition, different feedthrough voltage values will also reduce the available voltage range of the pixel, that is, reduce the effective contrast range that the pixel can display.

发明内容Contents of the invention

本发明所要解决的技术问题在于提供一种具均匀馈通电压的液晶显示装置，以解决现有技术中屏幕显示出现闪烁及色偏现象的问题。The technical problem to be solved by the present invention is to provide a liquid crystal display device with a uniform feed-through voltage to solve the problems of flickering and color shift in the screen display in the prior art.

为实现上述目的，依据本发明的实施例，其揭露一种具均匀馈通电压的液晶显示装置，包含多条平行设置的数据线、多条平行设置的栅极线、多条平行设置的共同电极线、多个储存单元、多个第一开关、及多个第二开关。每一条数据线接收相对应的数据信号。多条平行设置的栅极线与多条数据线互相垂直，每一条栅极线接收相对应的栅极信号。多条平行设置的共同电极线用以接收共同电压。每一个储存单元包含第一液晶电容及第二液晶电容。第一液晶电容包含第一端及第二端，其中第一端耦合于相对应共同电极线。第二液晶电容包含第一端及第二端，其中第一端耦合于相对应共同电极线。每一个第一开关包含第一端、第二端、栅极端、及第一端电容，其中第一端耦合于相对应第一液晶电容的第二端，第二端耦合于相对应数据线，栅极端耦合于相对应栅极线，第一端电容耦合于第一开关的栅极端与第一端之间，第一开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第一开关的第一端与第二端之间的信号连结。每一个第二开关包含第一端、第二端、栅极端、及第一端电容，其中第一端耦合于相对应第二液晶电容的第二端，第二端耦合于相对应第一开关的第一端，栅极端耦合于相对应栅极线，第一端电容耦合于第二开关的栅极端与第一端之间，第二开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第二开关的第一端与第二端之间的信号连结。第一开关的第一端电容的电容值大于第二开关的第一端电容的电容值。In order to achieve the above object, according to the embodiment of the present invention, it discloses a liquid crystal display device with a uniform feed-through voltage, which includes a plurality of data lines arranged in parallel, a plurality of gate lines arranged in parallel, and a plurality of common wires arranged in parallel. Electrode lines, multiple storage units, multiple first switches, and multiple second switches. Each data line receives a corresponding data signal. A plurality of parallel gate lines and a plurality of data lines are perpendicular to each other, and each gate line receives a corresponding gate signal. A plurality of common electrode lines arranged in parallel are used to receive a common voltage. Each storage unit includes a first liquid crystal capacitor and a second liquid crystal capacitor. The first liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to a corresponding common electrode line. The second liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding common electrode line. Each first switch includes a first terminal, a second terminal, a gate terminal, and a first terminal capacitor, wherein the first terminal is coupled to the second terminal corresponding to the first liquid crystal capacitor, and the second terminal is coupled to the corresponding data line, The gate terminal is coupled to the corresponding gate line, the first terminal is capacitively coupled between the gate terminal and the first terminal of the first switch, and the first switch controls the gate signal according to the gate signal received by the gate terminal from the corresponding gate line The signal connection between the first terminal and the second terminal of the first switch. Each second switch includes a first terminal, a second terminal, a gate terminal, and a first terminal capacitor, wherein the first terminal is coupled to the second terminal corresponding to the second liquid crystal capacitor, and the second terminal is coupled to the corresponding first switch. The first terminal, the gate terminal is coupled to the corresponding gate line, the first terminal is capacitively coupled between the gate terminal of the second switch and the first terminal, and the second switch receives the corresponding gate line according to its gate terminal The gate signal controls the signal connection between the first terminal and the second terminal of the second switch. The capacitance value of the first terminal capacitance of the first switch is greater than the capacitance value of the first terminal capacitance of the second switch.

依据本发明的实施例，其另揭露一种具均匀馈通电压的液晶显示装置，包含多条平行设置的数据线、多条平行设置的栅极线、多条平行设置的第一共同电极线、多条平行设置的第二共同电极线、多个储存单元、多个第一开关、及多个第二开关。每一条数据线接收相对应的数据信号。多条平行设置的栅极线与多条数据线互相垂直，每一条栅极线接收相对应的栅极信号。多条平行设置的第一共同电极线用以接收第一共同电压。多条平行设置的第二共同电极线用以接收第二共同电压。每一个储存单元包含第一液晶电容及第二液晶电容。第一液晶电容包含第一端及第二端，其中第一端耦合于相对应第一共同电极线。第二液晶电容包含第一端及第二端，其中第一端耦合于相对应第二共同电极线。每一个第一开关包含第一端、第二端、栅极端、及第一端电容，其中第一端耦合于相对应第一液晶电容的第二端，第二端耦合于相对应数据线，栅极端耦合于相对应栅极线，第一端电容耦合于第一开关的栅极端与第一端之间，第一开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第一开关的第一端与第二端之间的信号连结。每一个第二开关包含第一端、第二端、栅极端、及第一端电容，其中第一端耦合于相对应第二液晶电容的第二端，第二端耦合于相对应第一开关的第一端，栅极端耦合于相对应栅极线，第一端电容耦合于第二开关的栅极端与第一端之间，第二开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第二开关的第一端与第二端之间的信号连结。第一开关的第一端电容的电容值大于第二开关的第一端电容的电容值。According to an embodiment of the present invention, it further discloses a liquid crystal display device with a uniform feedthrough voltage, comprising a plurality of data lines arranged in parallel, a plurality of gate lines arranged in parallel, and a plurality of first common electrode lines arranged in parallel , a plurality of second common electrode lines arranged in parallel, a plurality of storage units, a plurality of first switches, and a plurality of second switches. Each data line receives a corresponding data signal. A plurality of parallel gate lines and a plurality of data lines are perpendicular to each other, and each gate line receives a corresponding gate signal. A plurality of first common electrode lines arranged in parallel are used for receiving a first common voltage. A plurality of second common electrode lines arranged in parallel are used to receive a second common voltage. Each storage unit includes a first liquid crystal capacitor and a second liquid crystal capacitor. The first liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding first common electrode line. The second liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding second common electrode line. Each first switch includes a first terminal, a second terminal, a gate terminal, and a first terminal capacitor, wherein the first terminal is coupled to the second terminal corresponding to the first liquid crystal capacitor, and the second terminal is coupled to the corresponding data line, The gate terminal is coupled to the corresponding gate line, the first terminal is capacitively coupled between the gate terminal and the first terminal of the first switch, and the first switch controls the gate signal according to the gate signal received by the gate terminal from the corresponding gate line The signal connection between the first terminal and the second terminal of the first switch. Each second switch includes a first terminal, a second terminal, a gate terminal, and a first terminal capacitor, wherein the first terminal is coupled to the second terminal corresponding to the second liquid crystal capacitor, and the second terminal is coupled to the corresponding first switch. The first terminal, the gate terminal is coupled to the corresponding gate line, the first terminal is capacitively coupled between the gate terminal of the second switch and the first terminal, and the second switch receives the corresponding gate line according to its gate terminal The gate signal controls the signal connection between the first terminal and the second terminal of the second switch. The capacitance value of the first terminal capacitance of the first switch is greater than the capacitance value of the first terminal capacitance of the second switch.

依据本发明的实施例，其另揭露一种具均匀馈通电压的液晶显示装置，包含多条平行设置的数据线、多条平行设置的栅极线、多条平行设置的共同电极线、多个储存单元、多个第一开关、及多个第二开关。每一数据线接收相对应的数据信号。多条平行设置的栅极线与多条数据线互相垂直，每一栅极线接收相对应的栅极信号。多条平行设置的共同电极线用以接收共同电压，多条共同电极线平行或垂直于多条栅极线。每一储存单元包含第一液晶电容及第二液晶电容。第一液晶电容包含第一端及第二端，其中第一端耦合于相对应共同电极线。第二液晶电容包含第一端及第二端，其中第一端耦合于相对应共同电极线。每一个第一开关包含第一端、第二端、栅极通道、与栅极端，其中第一端耦合于相对应第一液晶电容的第二端，第二端耦合于相对应数据线，栅极信道耦合于第一开关的第一端与第二端之间，栅极端耦合于相对应栅极线，第一开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第一开关的第一端与第二端之间的栅极通道的导通状态。每一个第二开关包含第一端、第二端、栅极通道、与栅极端，其中第一端耦合于相对应第二液晶电容的第二端，第二端耦合于相对应第一开关的第一端，栅极通道耦合于第二开关的第一端与第二端之间，栅极端耦合于相对应栅极线，第二开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第二开关的第一端与第二端之间的栅极通道的导通状态。第一开关的栅极通道的宽长比大于第二开关的栅极通道的宽长比。According to an embodiment of the present invention, it further discloses a liquid crystal display device with a uniform feedthrough voltage, comprising a plurality of data lines arranged in parallel, a plurality of gate lines arranged in parallel, a plurality of common electrode lines arranged in parallel, a plurality of a storage unit, a plurality of first switches, and a plurality of second switches. Each data line receives a corresponding data signal. A plurality of parallel gate lines and a plurality of data lines are perpendicular to each other, and each gate line receives a corresponding gate signal. A plurality of common electrode lines arranged in parallel are used to receive a common voltage, and the plurality of common electrode lines are parallel or perpendicular to the plurality of gate lines. Each storage unit includes a first liquid crystal capacitor and a second liquid crystal capacitor. The first liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to a corresponding common electrode line. The second liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding common electrode line. Each first switch includes a first end, a second end, a gate channel, and a gate end, wherein the first end is coupled to the second end of the corresponding first liquid crystal capacitor, the second end is coupled to the corresponding data line, and the gate The polar channel is coupled between the first terminal and the second terminal of the first switch, the gate terminal is coupled to the corresponding gate line, and the first switch controls the second terminal according to the gate signal received by the gate terminal from the corresponding gate line. A conduction state of a gate channel between a first terminal and a second terminal of a switch. Each second switch includes a first terminal, a second terminal, a gate channel, and a gate terminal, wherein the first terminal is coupled to the second terminal corresponding to the second liquid crystal capacitor, and the second terminal is coupled to the corresponding first switch. The first terminal, the gate channel is coupled between the first terminal and the second terminal of the second switch, the gate terminal is coupled to the corresponding gate line, and the second switch receives the gate signal from the corresponding gate line according to its gate terminal. Pole signal to control the conduction state of the gate channel between the first terminal and the second terminal of the second switch. The width-to-length ratio of the gate channel of the first switch is greater than the width-to-length ratio of the gate channel of the second switch.

依据本发明的实施例，其另揭露一种具均匀馈通电压的液晶显示装置，包含多条平行设置的数据线、多条平行设置的栅极线、多条平行设置的第一共同电极线、多条平行设置的第二共同电极线、多个储存单元、多个第一开关、及多个第二开关。每一条数据线接收相对应的数据信号。多条平行设置的栅极线与多条数据线互相垂直，每一条栅极线接收相对应的栅极信号。多条平行设置的第一共同电极线用以接收第一共同电压，多条第一共同电极线平行或垂直于多条栅极线。多条平行设置的第二共同电极线用以接收第二共同电压，多条第二共同电极线平行或垂直于多条栅极线。每一个储存单元包含第一液晶电容及第二液晶电容。第一液晶电容包含第一端及第二端，其中第一端耦合于相对应第一共同电极线。第二液晶电容包含第一端及第二端，其中第一端耦合于相对应第二共同电极线。每一个第一开关包含第一端、第二端、栅极通道、与栅极端，其中第一端耦合于相对应第一液晶电容的第二端，第二端耦合于相对应数据线，栅极信道耦合于第一开关的第一端与第二端之间，栅极端耦合于相对应栅极线，第一开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第一开关的第一端与第二端之间的栅极通道的导通状态。每一个第二开关包含第一端、第二端、栅极通道、与栅极端，其中第一端耦合于相对应第二液晶电容的第二端，第二端耦合于相对应第一开关的第一端，栅极通道耦合于第二开关的第一端与第二端之间，栅极端耦合于相对应栅极线，第二开关根据其栅极端从相对应栅极线所接收的栅极信号，控制第二开关的第一端与第二端之间的栅极通道的导通状态。第一开关的栅极通道的宽长比大于第二开关的栅极通道的宽长比。According to an embodiment of the present invention, it further discloses a liquid crystal display device with a uniform feedthrough voltage, comprising a plurality of data lines arranged in parallel, a plurality of gate lines arranged in parallel, and a plurality of first common electrode lines arranged in parallel , a plurality of second common electrode lines arranged in parallel, a plurality of storage units, a plurality of first switches, and a plurality of second switches. Each data line receives a corresponding data signal. A plurality of parallel gate lines and a plurality of data lines are perpendicular to each other, and each gate line receives a corresponding gate signal. The multiple first common electrode lines arranged in parallel are used to receive the first common voltage, and the multiple first common electrode lines are parallel or perpendicular to the multiple gate lines. A plurality of second common electrode lines arranged in parallel are used to receive a second common voltage, and the plurality of second common electrode lines are parallel to or perpendicular to the plurality of gate lines. Each storage unit includes a first liquid crystal capacitor and a second liquid crystal capacitor. The first liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding first common electrode line. The second liquid crystal capacitor includes a first end and a second end, wherein the first end is coupled to the corresponding second common electrode line. Each first switch includes a first end, a second end, a gate channel, and a gate end, wherein the first end is coupled to the second end of the corresponding first liquid crystal capacitor, the second end is coupled to the corresponding data line, and the gate The polar channel is coupled between the first terminal and the second terminal of the first switch, the gate terminal is coupled to the corresponding gate line, and the first switch controls the second terminal according to the gate signal received by the gate terminal from the corresponding gate line. A conduction state of a gate channel between a first terminal and a second terminal of a switch. Each second switch includes a first terminal, a second terminal, a gate channel, and a gate terminal, wherein the first terminal is coupled to the second terminal corresponding to the second liquid crystal capacitor, and the second terminal is coupled to the corresponding first switch. The first terminal, the gate channel is coupled between the first terminal and the second terminal of the second switch, the gate terminal is coupled to the corresponding gate line, and the second switch receives the gate signal from the corresponding gate line according to its gate terminal. Pole signal to control the conduction state of the gate channel between the first terminal and the second terminal of the second switch. The width-to-length ratio of the gate channel of the first switch is greater than the width-to-length ratio of the gate channel of the second switch.

依本发明的液晶显示装置，通过设计符合需求的相对应晶体管开关的栅源电容值，可使液晶显示装置的操作中，具有均匀的馈通电压，用以消除色偏现象，而通过供应随液晶电压的馈通电压变化而变化的共同电压，则可精确消除显示屏幕的闪烁现象。According to the liquid crystal display device of the present invention, by designing the gate-source capacitance value of the corresponding transistor switch that meets the requirements, the operation of the liquid crystal display device can have a uniform feed-through voltage to eliminate the color shift phenomenon, and by supplying The common voltage that changes with the feed-through voltage of the liquid crystal voltage can accurately eliminate the flicker phenomenon of the display screen.

以下结合附图和具体实施例对本发明进行详细描述，但不作为对本发明的限定。The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

附图说明Description of drawings

图1为本发明第一实施例的液晶显示装置的电路示意图；1 is a schematic circuit diagram of a liquid crystal display device according to a first embodiment of the present invention;

图2为图1所示液晶显示装置的工作相关信号时序图，其中横轴为时间轴；FIG. 2 is a timing diagram of work-related signals of the liquid crystal display device shown in FIG. 1, wherein the horizontal axis is the time axis;

图3为图1所示第一开关的布局示意图；FIG. 3 is a schematic layout diagram of the first switch shown in FIG. 1;

图4为本发明第二实施例的液晶显示装置的电路示意图；4 is a schematic circuit diagram of a liquid crystal display device according to a second embodiment of the present invention;

图5为图4所示液晶显示装置的工作相关信号时序图，其中横轴为时间轴；FIG. 5 is a timing diagram of work-related signals of the liquid crystal display device shown in FIG. 4, wherein the horizontal axis is the time axis;

图6为本发明第三实施例的液晶显示装置的电路示意图；6 is a schematic circuit diagram of a liquid crystal display device according to a third embodiment of the present invention;

图7为本发明第四实施例的液晶显示装置的电路示意图。FIG. 7 is a schematic circuit diagram of a liquid crystal display device according to a fourth embodiment of the present invention.

其中，附图标记：Among them, reference signs:

100、400、600、700：液晶显示装置101：第一像素区域100, 400, 600, 700: liquid crystal display device 101: first pixel area

102：第二像素区域              110：数据线102: Second pixel area 110: Data line

120：栅极线                    130、133：共同电极线120:grid line 130, 133: common electrode line

131、135：第一共同电极线       132、136：第二共同电极线131, 135: the firstcommon electrode line 132, 136: the second common electrode line

140：储存单元                  143：第一液晶电容140: storage unit 143: first liquid crystal capacitor

145：第二液晶电容              150：第一开关145: The second liquid crystal capacitor 150: The first switch

153、163：第一端电容           160：第二开关153, 163: first terminal capacitor 160: second switch

SW11、SW12、SW21、SW22：开关   t1、t2：时间SW11, SW12, SW21, SW22: switch t1, t2: time

V1：第一电压                   V2：第二电压V1: first voltage V2: second voltage

Vcom：共同电压                 Vcom1：第一共同电压Vcom: common voltage Vcom1: first common voltage

Vcom2：第二共同电压            V_D1、V_Dm-1、V_Dm：数据信号Vcom2: second common voltage V_D1 , V_Dm-1 , V_Dm : data signal

V_G1、V_G2、V_Gn-1、V_Gn：栅极信号 ΔT1、ΔT2：充电时段V_G1 , V_G2 , V_Gn-1 , V_Gn : gate signal ΔT1, ΔT2: charging period

ΔV_G1、ΔV_G2：：压差ΔV_G1 , ΔV_G2 :: Pressure difference

Vft1、Vft2、Vft21、Vft22：馈通电压Vft1, Vft2, Vft21, Vft22: feedthrough voltage

具体实施方式Detailed ways

为让本发明更显而易懂，下文依本发明的具均匀馈通电压的液晶显示装置，特举实施例配合所附附图作详细说明，但所提供的实施例并不用以限制本发明所涵盖的范围。In order to make the present invention clearer and easier to understand, the liquid crystal display device with uniform feed-through voltage according to the present invention will be described in detail below in conjunction with the accompanying drawings, but the provided embodiments are not intended to limit the present invention the scope covered.

图1为本发明第一实施例的液晶显示装置(仅包括与子像素充电控制相关的电路)的电路示意图。如图1所示，液晶显示装置100包含多条平行设置的数据线110、多条平行设置的栅极线120、多条平行设置的共同电极线130、多个储存单元140、多个第一开关150、以及多个第二开关160，其中液晶显示装置100的每一像素区域由相邻数据线110及相邻栅极线120所界定的区域。每一像素区域包含相对应的储存单元140、第一开关150、及第二开关160。FIG. 1 is a schematic circuit diagram of a liquid crystal display device (including only circuits related to sub-pixel charging control) according to a first embodiment of the present invention. As shown in FIG. 1 , the liquidcrystal display device 100 includes a plurality ofdata lines 110 arranged in parallel, a plurality ofgate lines 120 arranged in parallel, a plurality ofcommon electrode lines 130 arranged in parallel, a plurality ofstorage units 140, a plurality of first Theswitch 150 , and the plurality ofsecond switches 160 , wherein each pixel area of the liquidcrystal display device 100 is an area defined byadjacent data lines 110 and adjacent gate lines 120 . Each pixel area includes acorresponding storage unit 140 , afirst switch 150 , and asecond switch 160 .

多条数据线110用以分别接收相对应的数据信号V_D1…V_Dm。多条栅极线120与多条数据线110互相垂直，用以接收相对应的栅极信号V_G1…V_Gn。多条共同电极线130平行于多条栅极线120，每一条共同电极线130均接收共同电压Vcom。每一个储存单元140对应于一个像素，每一个像素包含第一子像素及第二子像素，第一子像素包含具有第一电容值C_B(亮区电容值)的第一液晶电容143，第二子像素包含具有第二电容值C_D(暗区电容值)的第二液晶电容145。每一第一液晶电容143包含第一端及第二端，其中第一端耦合于相对应的共同电极线130。每一第二液晶电容145包含第一端及第二端，其中第一端耦合于相对应的共同电极线130。The plurality ofdata lines 110 are used to respectively receive corresponding data signals V_{D1 .} . . V_Dm . The plurality ofgate lines 120 are perpendicular to the plurality ofdata lines 110 for receiving corresponding gate signals V_G1 . . . V_Gn . The plurality ofcommon electrode lines 130 are parallel to the plurality ofgate lines 120 , and eachcommon electrode line 130 receives a common voltage Vcom. Eachstorage unit 140 corresponds to a pixel, each pixel includes a first sub-pixel and a second sub-pixel, the first sub-pixel includes a firstliquid crystal capacitor 143 with a first capacitance value C_B (bright area capacitance value), and the second The second sub-pixel includes a secondliquid crystal capacitor 145 having a second capacitance_CD (dark region capacitance). Each firstliquid crystal capacitor 143 includes a first end and a second end, wherein the first end is coupled to the correspondingcommon electrode line 130 . Each secondliquid crystal capacitor 145 includes a first terminal and a second terminal, wherein the first terminal is coupled to the correspondingcommon electrode line 130 .

每一个第一开关150包含第一端、第二端、栅极端、第一端电容153、与栅极通道，其中第一端耦合于相对应的第一液晶电容143的第二端，第二端耦合于相对应的数据线110，栅极端耦合于相对应的栅极线120，第一端电容153耦合于此第一开关150的栅极端与第一端之间，栅极通道耦合于此第一开关150的第一端与第二端之间，第一开关150为一薄膜晶体管(Thin FilmTransistor)或一金氧半场效晶体管(MOS Field Effect Transistor)，第一端可以是源极端，第二端可以是漏极端，而第一端电容153可以是具有电容值Cgs1的栅源电容，第一开关150的栅极通道具有垂直于汲源电流的宽度与平行于此汲源电流的长度。Eachfirst switch 150 includes a first terminal, a second terminal, a gate terminal, a firstterminal capacitor 153, and a gate channel, wherein the first terminal is coupled to the second terminal of the corresponding firstliquid crystal capacitor 143, and the second terminal is coupled to the correspondingdata line 110, the gate terminal is coupled to thecorresponding gate line 120, the firstterminal capacitance 153 is coupled between the gate terminal and the first terminal of thefirst switch 150, and the gate channel is coupled here Between the first end and the second end of thefirst switch 150, thefirst switch 150 is a thin film transistor (Thin Film Transistor) or a metal oxide semi-field effect transistor (MOS Field Effect Transistor), and the first end may be a source end, The second terminal may be a drain terminal, and the firstterminal capacitance 153 may be a gate-source capacitance having a capacitance value Cgs1, and the gate channel of thefirst switch 150 has a width perpendicular to the sink-source current and a length parallel to the sink-source current. .

每一个第二开关160包含第一端、第二端、栅极端、第一端电容163、与栅极通道，其中第一端耦合于相对应的第二液晶电容145的第二端，第二端耦合于相邻像素区域的第一开关150的第一端，栅极端耦合于相对应的栅极线120，第一端电容163耦合于此第二开关160的栅极端与第一端之间，第二开关160为一薄膜晶体管或一金氧半场效晶体管，第一端可以是源极端，第二端可以是漏极端，而第一端电容163可以是具有电容值Cgs2的栅源电容，第二开关160的栅极通道具有垂直于汲源电流的宽度与平行于此汲源电流的长度。Eachsecond switch 160 includes a first terminal, a second terminal, a gate terminal, a firstterminal capacitor 163, and a gate channel, wherein the first terminal is coupled to the second terminal of the corresponding secondliquid crystal capacitor 145, and the second The terminal is coupled to the first terminal of thefirst switch 150 in the adjacent pixel area, the gate terminal is coupled to thecorresponding gate line 120, and the firstterminal capacitor 163 is coupled between the gate terminal and the first terminal of thesecond switch 160 , thesecond switch 160 is a thin film transistor or a metal-oxide-semiconductor field-effect transistor, the first terminal may be a source terminal, the second terminal may be a drain terminal, and the firstterminal capacitance 163 may be a gate-source capacitance having a capacitance value Cgs2 , the gate channel of thesecond switch 160 has a width perpendicular to the source current and a length parallel to the source current.

图2为图1所示液晶显示装置100的工作相关信号时序图，其中横轴为时间轴。为方便说明，图2针对图1的第一像素区域101及第二像素区域102，由栅极信号V_G1、栅极信号V_G2、及数据信号V_D1执行充放电程序所产生的工作相关信号时序图。在图1中，第一像素区域101的第一开关150为开关SW11，第一像素区域101的第二开关160为开关SW12，第二像素区域102的第一开关150为开关SW21，第二像素区域102的第二开关160为开关SW22。第一像素区域101的第一液晶电容143的第二端具有第一电压V1，第一像素区域101的第二液晶电容145的第二端具有第二电压V2。FIG. 2 is a timing diagram of operation-related signals of the liquidcrystal display device 100 shown in FIG. 1 , wherein the horizontal axis is the time axis. For the convenience of description, FIG. 2 shows the work-related signals generated by the gate signal V_G1 , the gate signal V_G2 , and the data signal V_D1 for thefirst pixel region 101 and thesecond pixel region 102 in FIG. timing diagram. In FIG. 1, thefirst switch 150 in thefirst pixel area 101 is a switch SW11, thesecond switch 160 in thefirst pixel area 101 is a switch SW12, thefirst switch 150 in thesecond pixel area 102 is a switch SW21, and thesecond pixel area 101 is a switch SW12. Thesecond switch 160 ofarea 102 is switch SW22. The second end of the firstliquid crystal capacitor 143 in thefirst pixel area 101 has a first voltage V1, and the second end of the secondliquid crystal capacitor 145 in thefirst pixel area 101 has a second voltage V2.

在图2中，由上往下的信号分别为栅极信号V_G1、栅极信号V_G2、数据信号V_D1、第二电压V2、以及第一电压V1，另显示共同电压Vcom的准位。在时间t1时，栅极信号V_G2由高准位电压转为低准位电压，所以开关SW21由导通状态转为截止状态，栅极信号V_G1保持在高准位电压，所以开关SW11及开关SW12仍保持在导通状态，因此第二电压V2受开关SW21的状态变化影响而降低如图2所示的馈通电压Vft21，馈通电压Vft21可以下列公式(1)表示：In FIG. 2 , the signals from top to bottom are the gate signal V_G1 , the gate signal V_G2 , the data signal V_D1 , the second voltage V2 , and the first voltage V1 , and the level of the common voltage Vcom is also shown. At time t1, the gate signal V_G2 changes from a high level voltage to a low level voltage, so the switch SW21 turns from an on state to an off state, and the gate signal V_G1 remains at a high level voltage, so the switches SW11 and The switch SW12 remains in the on state, so the second voltage V2 is affected by the state change of the switch SW21 and reduces the feedthrough voltage Vft21 as shown in FIG. 2 , and the feedthrough voltage Vft21 can be expressed by the following formula (1):

$V\mathrm{ft}21=\frac{\mathrm{Cgs}1}{C_D+C_B+\mathrm{Cgs}1}\mathrm{\&Delta;}{V}_{G2}$……公式(1)$V\mathrm{ft}\mathrm{twenty\; one}=\frac{\mathrm{Cgs}1}{C_{\mathrm{D.}}+C_B+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">Cgs</figure-callout>}1}\mathrm{\&Delta;}{\mathrm{<figure-callout\; label="V\; G"\; filenames="S2008100004914E00021.png"\; state="\{\{state\}\}">V</figure-callout>}}_G$ ……Formula 1)

其中，Cgs1为开关SW21的第一端电容153的电容值，C_D为第一像素区域101的第二液晶电容145的电容值，C_B为第二像素区域102的第一液晶电容143的电容值，ΔV_G2为栅极信号V_G2由高准位电压转为低准位电压的压差。Wherein, Cgs1 is the capacitance value of the firstterminal capacitor 153 of the switch SW21,_CD is the capacitance value of the secondliquid crystal capacitor 145 in thefirst pixel area 101, and C_B is the capacitance of the firstliquid crystal capacitor 143 in thesecond pixel area 102 ΔV_G2 is the voltage difference of the gate signal V_G2 from the high level voltage to the low level voltage.

在时间t2时，栅极信号V_G1由高准位电压转为低准位电压，所以开关SW11及开关SW12均由导通状态转为截止状态，因此第二电压V2受开关SW12的状态变化影响而降低如图2所示的馈通电压Vft22，第一电压V1受开关SW11的状态变化影响而降低如图2所示的馈通电压Vft1，馈通电压Vft22及馈通电压Vft1可以下列公式(2)及(3)表示：At time t2, the gate signal V_G1 changes from a high-level voltage to a low-level voltage, so both the switch SW11 and the switch SW12 are turned from the on state to the off state, so the second voltage V2 is affected by the state change of the switch SW12 To reduce the feedthrough voltage Vft22 shown in FIG. 2, the first voltage V1 is affected by the state change of the switch SW11 to reduce the feedthrough voltage Vft1 shown in FIG. 2, and the feedthrough voltage Vft22 and the feedthrough voltage Vft1 can be obtained by the following formula 2) and (3) mean:

$V\mathrm{ft}22=\frac{\mathrm{Cgs}2}{C_D+\mathrm{Cgs}2}\mathrm{\&Delta;}{V}_{G1}$……公式(2)$V\mathrm{ft}\mathrm{twenty\; two}=\frac{\mathrm{Cgs}2}{C_{\mathrm{D.}}+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00021.png"\; state="\{\{state\}\}">Cgs</figure-callout>}2}\mathrm{\&Delta;}{\mathrm{<figure-callout\; label="V\; G"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">V</figure-callout>}}_G$ ...Formula (2)

$\mathrm{Vft}1=\frac{\mathrm{Cgs}1}{C_B+\mathrm{Cgs}1}\mathrm{\&Delta;}{V}_{G1}$……公式(3)$\mathrm{<figure-callout\; label="Vft"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">Vft</figure-callout>}1=\frac{\mathrm{Cgs}1}{C_B+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">Cgs</figure-callout>}1}\mathrm{\&Delta;}{\mathrm{<figure-callout\; label="V\; G"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">V</figure-callout>}}_G$ ...Formula (3)

其中，Cgs2为开关SW12的第一端电容163的电容值，Cgs1为开关SW11的第一端电容153的电容值，C_D为第一像素区域101的第二液晶电容145的电容值，C_B为第一像素区域101的第一液晶电容143的电容值，ΔV_G1为栅极信号V_G1由高准位电压转为低准位电压的压差。Wherein, Cgs2 is the capacitance value of the firstterminal capacitor 163 of the switch SW12, Cgs1 is the capacitance value of the firstterminal capacitor 153 of the switch SW11,_CD is the capacitance value of the secondliquid crystal capacitor 145 of thefirst pixel area 101, C_B is the capacitance value of the firstliquid crystal capacitor 143 in thefirst pixel area 101 , and ΔV_G1 is the voltage difference when the gate signal V_G1 changes from the high level voltage to the low level voltage.

由图2的时序图可知，在经栅极信号V_G2与栅极信号V_G1分别于时间t1及t2，由高准位电压转为低准位电压后，第一像素区域101的第一液晶电容143的第一电压V1降低馈通电压Vft1，第一像素区域101的第二液晶电容145的第二电压V2降低馈通电压Vft2，其中馈通电压Vft2为馈通电压Vft21及馈通电压Vft22的总和。在现有技术液晶显示装置的数据信号驱动操作中，因馈通电压Vft2显著大于馈通电压Vft1，所以导致闪烁及色偏现象，而像素可显示的有效对比范围也因此缩小。为使馈通电压Vft1等于馈通电压Vft2，用以消除因不同馈通电压值导致的色偏现象，所以在一较佳实施例中，可使电容值Cgs1符合下列公式(4)：It can be seen from the timing diagram of FIG. 2 that after the gate signal V_G2 and the gate signal V_G1 respectively change from the high level voltage to the low level voltage at time t1 and t2, the first liquid crystal in thefirst pixel region 101 The first voltage V1 of thecapacitor 143 reduces the feedthrough voltage Vft1, and the second voltage V2 of the secondliquid crystal capacitor 145 in thefirst pixel area 101 reduces the feedthrough voltage Vft2, wherein the feedthrough voltage Vft2 is the feedthrough voltage Vft21 and the feedthrough voltage Vft22 Sum. In the data signal driving operation of the prior art liquid crystal display device, since the feed-through voltage Vft2 is significantly greater than the feed-through voltage Vft1 , flicker and color shift occur, and the effective contrast range of the pixels is thus reduced. In order to make the feedthrough voltage Vft1 equal to the feedthrough voltage Vft2 to eliminate the color shift phenomenon caused by different feedthrough voltage values, in a preferred embodiment, the capacitance Cgs1 can be made to conform to the following formula (4):

$\frac{\mathrm{Cgs}1}{C_D+C_B+\mathrm{Cgs}1}+\frac{\mathrm{Cgs}2}{C_D+\mathrm{Cgs}2}=\frac{\mathrm{Cgs}1}{C_B+\mathrm{Cgs}1}$……公式(4)$\frac{\mathrm{Cgs}1}{C_{\mathrm{D.}}+C_B+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">Cgs</figure-callout>}1}+\frac{\mathrm{Cgs}2}{C_{\mathrm{D.}}+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00021.png"\; state="\{\{state\}\}">Cgs</figure-callout>}2}=\frac{\mathrm{Cgs}1}{C_B+\mathrm{<figure-callout\; label="Cgs"\; filenames="S2008100004914E00011.png,S2008100004914E00041.png"\; state="\{\{state\}\}">Cgs</figure-callout>}1}$ ...Formula (4)

其中因压差ΔV_G1通常等于压差ΔV_G2，所以压差ΔV_G1与ΔV_G2均消去；换句话说，根据电容值C_D、C_B、及Cgs2，利用公式(4)可计算出使馈通电压Vft1及Vft2相等的电容值Cgs1。因此通过调整第一开关150的第一端电容153的电容值Cgs1，即可设计出具均匀馈通电压的液晶显示装置，被调整的电容值Cgs1通常会大于电容值Cgs2。此外，图2的共同电压Vcom可随着第一电压V1或第二电压V2的馈通电压变化而变化，用以降低闪烁现象。Since the pressure difference ΔV_G1 is_usually equal to the pressure difference ΔV_G2, the pressure difference ΔV_G1 and ΔV_G2 are eliminated; The capacitance value Cgs1 equal to the pass voltage Vft1 and Vft2. Therefore, by adjusting the capacitance Cgs1 of the firstterminal capacitor 153 of thefirst switch 150 , a liquid crystal display device with a uniform feedthrough voltage can be designed, and the adjusted capacitance Cgs1 is usually greater than the capacitance Cgs2 . In addition, the common voltage Vcom in FIG. 2 can be varied with the feed-through voltage of the first voltage V1 or the second voltage V2 to reduce the flicker phenomenon.

图3为图1所示第一开关150的布局示意图。如图3所示，第一开关150的第一端电容153的电容面积Ax显示为斜线区域，所以可通过调整电容面积Ax以设计出符合第一端电容153所需的电容值Cgs1。此外，也可通过调整相对应于第一端电容153的绝缘层的厚度或介电系数(Dielectric Constant)，而设计出符合第一端电容153所需的电容值Cgs1。因被调整的电容值Cgs1大于电容值Cgs2，所以，若通过调整电容面积以设计出符合所需的电容值Cgs1，则第一开关150的第一端电容153的电容面积大于第二开关160的第一端电容163的电容面积；若通过调整电容的绝缘层的厚度以设计出符合所需的电容值Cgs1，则第一开关150的第一端电容153的绝缘层的厚度小于第二开关160的第一端电容163的绝缘层的厚度；若通过调整电容的绝缘层的介电系数以设计出符合所需的电容值Cgs1，则第一开关150的第一端电容153的绝缘层的介电系数大于第二开关160的第一端电容163的绝缘层的介电系数。在另一实施例中，可同时调整电容面积、绝缘层的厚度及介电系数中的至少两个参数，以设计出符合所需的电容值Cgs1。FIG. 3 is a schematic layout diagram of thefirst switch 150 shown in FIG. 1 . As shown in FIG. 3 , the capacitance area Ax of the first-end capacitor 153 of thefirst switch 150 is shown as a hatched area, so the capacitance value Cgs1 required by the first-end capacitor 153 can be designed by adjusting the capacitance area Ax. In addition, the capacitance Cgs1 required by the first-end capacitor 153 can also be designed by adjusting the thickness or dielectric constant of the insulating layer corresponding to the first-end capacitor 153 . Because the adjusted capacitance value Cgs1 is greater than the capacitance value Cgs2, if the required capacitance value Cgs1 is designed by adjusting the capacitance area, the capacitance area of the firstterminal capacitance 153 of thefirst switch 150 is larger than that of thesecond switch 160 The capacitance area of the firstterminal capacitor 163; if the thickness of the insulating layer of the capacitor is adjusted to meet the required capacitance value Cgs1, the thickness of the insulating layer of the firstterminal capacitor 153 of thefirst switch 150 is smaller than that of thesecond switch 160 The thickness of the insulating layer of the firstterminal capacitor 163; if the dielectric coefficient of the insulating layer of the capacitor is adjusted to meet the required capacitance value Cgs1, then the dielectric coefficient of the insulating layer of the firstterminal capacitor 153 of thefirst switch 150 The electrical coefficient is greater than the dielectric coefficient of the insulating layer of the firstterminal capacitance 163 of thesecond switch 160 . In another embodiment, at least two parameters among the capacitance area, the thickness of the insulating layer, and the dielectric coefficient can be adjusted simultaneously to design the desired capacitance value Cgs1.

在图1所示的第二液晶电容145的第二电容值C_D与第一液晶电容143的第一电容值C_B的电容比值C_D/C_B会影响到液晶显示装置100的广视角特性。通常此电容比值C_D/C_B越大则广视角特性越佳，但当此电容比值C_D/C_B越大时，图2所示的充电时段ΔT1与充电时段ΔT2的比值也会跟着调高。在一实施例中，若第二电容值C_D与第一电容值C_B的比值为2比1，则充电时段ΔT1与充电时段ΔT2的比值为3比1。当充电时段ΔT2缩短时，相对应于第一液晶电容143的充电比率(Charging Ratio)就会降低，导致色饱和度不足的现象。所以，为提高相对应于第一液晶电容143的充电比率，可提高第一开关150的栅极通道的宽长比，即提高图3所示的第一开关150的栅极通道的宽度W与长度L的比值，使此宽长比大于第二开关160的栅极通道的宽长比。此外，在提高第一开关150的栅极通道的宽长比时，也可同时提高第一端电容153的电容面积，以设计出符合所需的电容值Cgs1。The capacitance ratio C_D /C_B of the second capacitance value C_D of the secondliquid crystal capacitor 145 and the first capacitance value C_B of the firstliquid crystal capacitor 143 shown in FIG. 1 will affect the wide viewing angle characteristics of the liquidcrystal display device 100 . Generally, the larger the capacitance ratio C_D /C_B is, the better the wide viewing angle characteristic is, but when the capacitance ratio C_D /C_B is larger, the ratio of the charging period ΔT1 to the charging period ΔT2 shown in Figure 2 will also be adjusted accordingly. high. In one embodiment, if the ratio of the second capacitance_CD to the first capacitance C_B is 2:1, the ratio of the charging period ΔT1 to the charging period ΔT2 is 3:1. When the charging period ΔT2 is shortened, the charging ratio (Charging Ratio) corresponding to the firstliquid crystal capacitor 143 will decrease, resulting in insufficient color saturation. Therefore, in order to increase the charging ratio corresponding to the firstliquid crystal capacitor 143, the width-to-length ratio of the gate channel of thefirst switch 150 can be increased, that is, the width W and the width of the gate channel of thefirst switch 150 shown in FIG. 3 can be increased. The ratio of the length L makes the width-to-length ratio larger than the width-to-length ratio of the gate channel of thesecond switch 160 . In addition, when increasing the width-to-length ratio of the gate channel of thefirst switch 150 , the capacitive area of the first-end capacitor 153 can also be increased at the same time, so as to design a required capacitance value Cgs1 .

图4为本发明第二实施例的液晶显示装置400的电路示意图。如图4所示，液晶显示装置400的电路结构将液晶显示装置100的多条平行设置的共同电极线130替换为多条平行设置的第一共同电极线131及多条平行设置的第二共同电极线132。多条第一共同电极线131及多条第二共同电极线132均平行于多条栅极线120，每一条第一共同电极线131均接收第一共同电压Vcom1，每一条第二共同电极线132均接收第二共同电压Vcom2，每一第一液晶电容143的第一端耦合于相对应第一共同电极线131，每一第二液晶电容145的第一端耦合于相对应第二共同电极线132。除上述电路差异外，液晶显示装置400的其余电路结构同于液晶显示装置100的电路结构，所以不再赘述。FIG. 4 is a schematic circuit diagram of a liquidcrystal display device 400 according to a second embodiment of the present invention. As shown in FIG. 4 , in the circuit structure of the liquidcrystal display device 400, the plurality ofcommon electrode lines 130 arranged in parallel in the liquidcrystal display device 100 are replaced by a plurality of firstcommon electrode lines 131 arranged in parallel and a plurality of second common electrode lines arranged in parallel.Electrode wire 132. The plurality of firstcommon electrode lines 131 and the plurality of secondcommon electrode lines 132 are parallel to the plurality ofgate lines 120, each of the firstcommon electrode lines 131 receives the first common voltage Vcom1, and each of the secondcommon electrode lines 132 all receive the second common voltage Vcom2, the first end of each firstliquid crystal capacitor 143 is coupled to the corresponding firstcommon electrode line 131, and the first end of each secondliquid crystal capacitor 145 is coupled to the corresponding second commonelectrode line Line 132. Except for the above-mentioned circuit differences, the rest of the circuit structure of the liquidcrystal display device 400 is the same as that of the liquidcrystal display device 100 , so it will not be repeated here.

图5为图4的液晶显示装置400的工作相关信号时序图，其中横轴为时间轴。为方便说明，图5针对图4的第一像素区域101及第二像素区域102，由栅极信号V_G1、栅极信号V_G2、及数据信号V_D1执行充放电程序所产生的工作相关信号时序图。图5所示的栅极信号V_G1、栅极信号V_G2、数据信号V_G1、第二电压V2、及第一电压V1的信号电压对时间的关系图同于图2，所以图5所示的馈通电压Vft21、Vft22、及Vft1的相对应关系式均同于公式(1)、(2)、及(3)。在一较佳实施例中，用以使馈通电压Vft1及Vft2相等的电容值Cgs1，同理可根据公式(4)计算产生。图5与图2的主要差异是将具固定准位的共同电压Vcom，替换为随第一电压V1的馈通电压变化而变化的第一共同电压Vcom1，及随第二电压V2的馈通电压变化而变化的第二共同电压Vcom2。FIG. 5 is a timing diagram of operation-related signals of the liquidcrystal display device 400 in FIG. 4 , where the horizontal axis is the time axis. For the convenience of illustration, FIG. 5 shows the work-related signals generated by the gate signal V_G1 , the gate signal V_G2 , and the data signal V_D1 for thefirst pixel region 101 and thesecond pixel region 102 in FIG. 4 . timing diagram. The signal voltage versus time graph of the gate signal V_G1 , gate signal V_G2 , data signal V_G1 , second voltage V2, and first voltage V1 shown in FIG. 5 is the same as that in FIG. The corresponding relational expressions of the feedthrough voltages Vft21, Vft22, and Vft1 are the same as formulas (1), (2), and (3). In a preferred embodiment, the capacitor value Cgs1 for making the feedthrough voltages Vft1 and Vft2 equal can be calculated according to formula (4). The main difference between FIG. 5 and FIG. 2 is that the common voltage Vcom with a fixed level is replaced by the first common voltage Vcom1 that varies with the feed-through voltage of the first voltage V1, and the feed-through voltage that varies with the second voltage V2. The second common voltage Vcom2 varies.

由上述可知，在液晶显示装置400中，通过设计出符合所需的电容值Cgs1，可使其数据信号驱动操作具有均匀的馈通电压值以消除色偏现象。通过供应随第一电压V1的馈通电压变化而变化的第一共同电压Vcom1至每一条第一共同电极线131，及供应随第二电压V2的馈通电压变化而变化的第二共同电压Vcom2至每一条第二共同电极线132，可精确消除显示屏幕的闪烁现象。由于馈通电压Vft1及Vft2相等，所以可简化用以产生第一共同电压Vcom1及第二共同电压Vcom2的电路设计。此外，由于具有均匀的馈通电压，像素的可利用电压范围受影响程度因而降低，所以像素显示有效对比范围受影响程度也跟着降低。至于当提高第二液晶电容145的第二电容值C_D与第一液晶电容143的第一电容值C_B的电容比值C_D/C_B时，因充电时段ΔT1与充电时段ΔT2的调整，导致色饱和度不足的现象，则可通过提高第一开关150的栅极通道的宽长比，以提高相对应于第一液晶电容143的充电比率，因而消除色饱和度不足的现象。It can be seen from the above that in the liquidcrystal display device 400 , by designing the required capacitance Cgs1 , the driving operation of the data signal can have a uniform feed-through voltage value to eliminate the color shift phenomenon. By supplying the first common voltage Vcom1 varying with the feed-through voltage of the first voltage V1 to each of the firstcommon electrode lines 131, and supplying the second common voltage Vcom2 varying with the feed-through voltage of the second voltage V2 To each of the secondcommon electrode lines 132, the flicker phenomenon of the display screen can be precisely eliminated. Since the feedthrough voltages Vft1 and Vft2 are equal, the circuit design for generating the first common voltage Vcom1 and the second common voltage Vcom2 can be simplified. In addition, due to the uniform feed-through voltage, the available voltage range of the pixel is affected to a lesser degree, so the effective contrast range of the pixel display is also affected to a lower degree. As for increasing the capacitance ratio C D /C_B of the second capacitance value_CD of the secondliquid crystal capacitor 145 and the first capacitance value C_B of the first liquid crystal capacitor₁₄₃ , due to the adjustment of the charging period ΔT1 and the charging period ΔT2 , resulting in The phenomenon of insufficient color saturation can be eliminated by increasing the width-to-length ratio of the gate channel of thefirst switch 150 to increase the charging ratio corresponding to the firstliquid crystal capacitor 143 .

图6为本发明第三实施例的液晶显示装置600的电路示意图。如图6所示，液晶显示装置600的电路结构将液晶显示装置100的多条共同电极线130替换为多条平行设置的共同电极线133，多条共同电极线133垂直于多条栅极线120，每一条共同电极线133均接收共同电压Vcom，每一个像素的第一液晶电容143的第一端及第二液晶电容145的第一端均耦合于相对应共同电极线133。除上述电路差异外，液晶显示装置600的其余电路结构同于液晶显示装置100的电路结构，所以不再赘述。FIG. 6 is a schematic circuit diagram of a liquidcrystal display device 600 according to a third embodiment of the present invention. As shown in Figure 6, the circuit structure of the liquidcrystal display device 600 replaces the multiplecommon electrode lines 130 of the liquidcrystal display device 100 with multiplecommon electrode lines 133 arranged in parallel, and the multiplecommon electrode lines 133 are perpendicular to themultiple gate lines 120 , eachcommon electrode line 133 receives a common voltage Vcom, and the first end of the firstliquid crystal capacitor 143 and the first end of the secondliquid crystal capacitor 145 of each pixel are coupled to the correspondingcommon electrode line 133 . Except for the above circuit differences, the rest of the circuit structure of the liquidcrystal display device 600 is the same as the circuit structure of the liquidcrystal display device 100 , so it will not be repeated here.

图7为本发明第四实施例的液晶显示装置700的电路示意图。如图7所示，液晶显示装置700的电路结构将液晶显示装置400的多条第一共同电极线131及多条第二共同电极线132分别替换为多条平行设置的第一共同电极线135及多条平行设置的第二共同电极线136，多条第一共同电极线135及多条第二共同电极线136均垂直于多条栅极线120，每一条第一共同电极线135均接收第一共同电压Vcom1，每一条第二共同电极线136均接收第二共同电压Vcom2，每一第一液晶电容143的第一端耦合于相对应的第一共同电极线135，每一第二液晶电容145的第一端耦合于相对应的第二共同电极线136。除上述电路差异外，液晶显示装置700的其余电路结构同于液晶显示装置400的电路结构，所以不再赘述。FIG. 7 is a schematic circuit diagram of a liquidcrystal display device 700 according to a fourth embodiment of the present invention. As shown in FIG. 7 , the circuit structure of the liquidcrystal display device 700 replaces the plurality of firstcommon electrode lines 131 and the plurality of secondcommon electrode lines 132 of the liquidcrystal display device 400 with a plurality of firstcommon electrode lines 135 arranged in parallel. and a plurality of secondcommon electrode lines 136 arranged in parallel, a plurality of firstcommon electrode lines 135 and a plurality of secondcommon electrode lines 136 are perpendicular to a plurality ofgate lines 120, and each firstcommon electrode line 135 receives The first common voltage Vcom1, each secondcommon electrode line 136 receives the second common voltage Vcom2, the first end of each firstliquid crystal capacitor 143 is coupled to the corresponding firstcommon electrode line 135, each second liquid crystal The first end of thecapacitor 145 is coupled to the corresponding secondcommon electrode line 136 . Except for the above circuit differences, the rest of the circuit structure of the liquidcrystal display device 700 is the same as the circuit structure of the liquidcrystal display device 400 , so it will not be repeated here.

由上述可知，依本发明的液晶显示装置，通过设计符合需求的相对应晶体管开关的栅源电容值，可使液晶显示装置的操作中，具有均匀的馈通电压，用以消除色偏现象，而通过供应随液晶电压的馈通电压变化而变化的共同电压，则可精确消除显示屏幕的闪烁现象。此外，由于具有均匀的馈通电压，像素的可利用电压范围受影响程度因而降低，所以像素显示有效对比范围受影响程度也跟着降低。至于当提高暗区电容值对亮区电容值的电容比值时，因充电时段比例的调整，导致色饱和度不足的现象，则可通过提高相对应晶体管开关的栅极通道的宽长比，以提高相对应于亮区液晶电容的充电比率，因而消除色饱和度不足的现象。It can be seen from the above that, according to the liquid crystal display device of the present invention, by designing the gate-source capacitance value corresponding to the transistor switch that meets the requirements, the operation of the liquid crystal display device can have a uniform feed-through voltage to eliminate the color shift phenomenon. By supplying a common voltage that varies with the feed-through voltage of the liquid crystal voltage, the flicker phenomenon of the display screen can be precisely eliminated. In addition, due to the uniform feed-through voltage, the available voltage range of the pixel is affected to a lesser degree, so the effective contrast range of the pixel display is also affected to a lower degree. As for the phenomenon of insufficient color saturation due to the adjustment of the charging period ratio when increasing the capacitance ratio of the capacitance value of the dark area to the capacitance value of the bright area, the width-to-length ratio of the gate channel corresponding to the transistor switch can be increased to reduce the color saturation. Increase the charging ratio of the liquid crystal capacitance corresponding to the bright area, thereby eliminating the phenomenon of insufficient color saturation.

当然，本发明还可有其它多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (18)

1. the liquid crystal indicator of a tool uniform feed-through voltage is characterized in that, comprises:

Many the data lines that be arranged in parallel, each bar data line receives a corresponding data-signal;

Many the gate lines that be arranged in parallel, orthogonal with these many data lines, each bar gate line receives a corresponding signal;

Many the common electrode lines that be arranged in parallel are in order to receive a common voltage;

A plurality of storage elements, each storage element comprises:

One first liquid crystal capacitance, it comprises the corresponding common electrode lines that one first end is coupled in these many common electrode lines, and one second end; And

One second liquid crystal capacitance, it comprises this corresponding common electrode lines that one first end is coupled in these many common electrode lines, and one second end;

A plurality of first switches, each first switch comprises:

One first end is coupled in second end of corresponding first liquid crystal capacitance of these a plurality of first liquid crystal capacitances;

One second end is coupled in a corresponding data line of these many data lines;

One gate terminal is coupled in a corresponding gate line of these many gate lines, and wherein from this signal that this corresponding gate line received, first end and the signal between second end of controlling this first switch link this first switch according to this gate terminal; And

One first end electric capacity is coupled between the gate terminal and first end of this first switch; And

A plurality of second switches, each second switch comprises:

One first end is coupled in second end of corresponding second liquid crystal capacitance of these a plurality of second liquid crystal capacitances;

One second end, be coupled in first end of corresponding first switch of these a plurality of first switches, first end of one corresponding first switch of these a plurality of first switches that second end of this each second switch is coupled is first ends of first switch in the one other pixel zone adjacent with this second switch place pixel region, wherein, should be the adjacent pixel region that is positioned at perpendicular on the gate line direction with its place pixel region adjacent pixel region;

One gate terminal, be coupled in a corresponding gate line of these many gate lines, the corresponding gate line that the gate terminal of this each second switch is coupled in these many gate lines is the same corresponding gate line with these many gate lines that gate terminal was coupled of first switch, and, this first switch and the second switch of this moment belong in the same pixel region, wherein from this signal that this corresponding gate line received, first end and the signal between second end of controlling this second switch link this second switch according to this gate terminal; And

One first end electric capacity is coupled between the gate terminal and first end of this second switch;

Wherein, the capacitance of the first end electric capacity of this first switch is greater than the capacitance of the first end electric capacity of this second switch, and the capacitance of the first end electric capacity of this first switch meets following formula:

Wherein Cgs1 is the capacitance of the first end electric capacity of this first switch, and Cgs2 is the capacitance of the first end electric capacity of this second switch, C_BBe the capacitance of this first liquid crystal capacitance, C_DCapacitance for this second liquid crystal capacitance.

2. liquid crystal indicator according to claim 1 is characterized in that, the capacity area of the first end electric capacity of this first switch is greater than the capacity area of the first end electric capacity of this second switch.

3. liquid crystal indicator according to claim 1, it is characterized in that, the first end electric capacity of this first switch has an insulation course, the first end electric capacity of this second switch has an insulation course, and the thickness of insulating layer of the first end electric capacity of this first switch is less than the thickness of insulating layer of the first end electric capacity of this second switch.

4. liquid crystal indicator according to claim 1, it is characterized in that, the first end electric capacity of this first switch has an insulation course, the first end electric capacity of this second switch has an insulation course, and the dielectric coefficient of the insulation course of the first end electric capacity of this first switch is greater than the dielectric coefficient of the insulation course of the first end electric capacity of this second switch.

5. liquid crystal indicator according to claim 1 is characterized in that, these a plurality of first switches and these a plurality of second switches comprise thin film transistor (TFT) or metal-oxide half field effect transistor.

6. liquid crystal indicator according to claim 1 is characterized in that, this many common electrode line parallels or perpendicular to these many gate lines.

7. the liquid crystal indicator of a tool uniform feed-through voltage is characterized in that, comprises:

Many the data lines that be arranged in parallel, each bar data line receives a corresponding data-signal;

Many the gate lines that be arranged in parallel, orthogonal with these many data lines, each bar gate line receives a corresponding signal;

Many first common electrode lines that be arranged in parallel are in order to receive one first common voltage;

Many second common electrode lines that be arranged in parallel are in order to receive one second common voltage;

A plurality of storage elements, each storage element comprises:

One first liquid crystal capacitance, it comprises corresponding first common electrode lines that one first end is coupled in these many first common electrode lines, and one second end; And

One second liquid crystal capacitance, it comprises corresponding second common electrode lines that one first end is coupled in these many second common electrode lines, and one second end;

A plurality of first switches, each first switch comprises:

One first end is coupled in second end of corresponding first liquid crystal capacitance of these a plurality of first liquid crystal capacitances;

One second end is coupled in a corresponding data line of these many data lines;

One gate terminal is coupled in a corresponding gate line of these many gate lines, and wherein from this signal that this corresponding gate line received, first end and the signal between second end of controlling this first switch link this first switch according to this gate terminal; And

One first end electric capacity is coupled between the gate terminal and first end of this first switch; And

A plurality of second switches, each second switch comprises:

One first end is coupled in second end of corresponding second liquid crystal capacitance of these a plurality of second liquid crystal capacitances;

One second end, be coupled in first end of corresponding first switch of these a plurality of first switches, first end of one corresponding first switch of these a plurality of first switches that second end of this each second switch is coupled is first ends of first switch in the one other pixel zone adjacent with this second switch place pixel region, wherein, should be the adjacent pixel region that is positioned at perpendicular on the gate line direction with its place pixel region adjacent pixel region;

One gate terminal, be coupled in a corresponding gate line of these many gate lines, the corresponding gate line that the gate terminal of this each second switch is coupled in these many gate lines is the same corresponding gate line with these many gate lines that gate terminal was coupled of first switch, and, this first switch and the second switch of this moment belong in the same pixel region, wherein from this signal that this corresponding gate line received, first end and the signal between second end of controlling this second switch link this second switch according to this gate terminal; And

One first end electric capacity is coupled between the gate terminal and first end of this second switch;

Wherein the capacitance of the first end electric capacity of this first switch is greater than the capacitance of the first end electric capacity of this second switch, and the capacitance of the first end electric capacity of this first switch meets following formula:

Wherein Cgs1 is the capacitance of the first end electric capacity of this first switch, and Cgs2 is the capacitance of the first end electric capacity of this second switch, C_BBe the capacitance of this first liquid crystal capacitance, C_DCapacitance for this second liquid crystal capacitance.

8. liquid crystal indicator according to claim 7 is characterized in that, these many first common electrode lines and these many second common electrode line parallels or perpendicular to these many gate lines.

9. liquid crystal indicator according to claim 7 is characterized in that, the capacity area of the first end electric capacity of this first switch is greater than the capacity area of the first end electric capacity of this second switch.

10. liquid crystal indicator according to claim 7, it is characterized in that, the first end electric capacity of this first switch has an insulation course, the first end electric capacity of this second switch has an insulation course, and the thickness of the insulation course of the first end electric capacity of this first switch is less than the thickness of the insulation course of the first end electric capacity of this second switch.

11. liquid crystal indicator according to claim 7, it is characterized in that, the first end electric capacity of this first switch has an insulation course, the first end electric capacity of this second switch has an insulation course, and the dielectric coefficient of the insulation course of the first end electric capacity of this first switch is greater than the dielectric coefficient of the insulation course of the first end electric capacity of this second switch.

12. liquid crystal indicator according to claim 7 is characterized in that, these a plurality of first switches and these a plurality of second switches comprise thin film transistor (TFT) or metal-oxide half field effect transistor.

13. the liquid crystal indicator of a tool uniform feed-through voltage is characterized in that, comprises:

Many the data lines that be arranged in parallel, each bar data line receives a corresponding data-signal;

Many the gate lines that be arranged in parallel, orthogonal with these many data lines, each bar gate line receives a corresponding signal;

Many the common electrode lines that be arranged in parallel, in order to receiving a common voltage, this many common electrode line parallels or perpendicular to these many gate lines;

A plurality of storage elements, each storage element comprises:

One first liquid crystal capacitance, it comprises the corresponding common electrode lines that one first end is coupled in these many common electrode lines, and one second end; And

One second liquid crystal capacitance, it comprises this corresponding common electrode lines that one first end is coupled in these many common electrode lines, and one second end;

A plurality of first switches, each first switch comprises:

One first end is coupled in second end of corresponding first liquid crystal capacitance of these a plurality of first liquid crystal capacitances;

One second end is coupled in a corresponding data line of these many data lines;

One grid passage is coupled between first end and second end of this first switch; And

One gate terminal, be coupled in a corresponding gate line of these many gate lines, wherein this first switch from this signal that this corresponding gate line received, is controlled the conducting state of first end and this grid passage between second end of this first switch according to this gate terminal; And

A plurality of second switches, each second switch comprises:

One first end is coupled in second end of corresponding second liquid crystal capacitance of these a plurality of second liquid crystal capacitances;

One second end, be coupled in first end of corresponding first switch of these a plurality of first switches, first end of one corresponding first switch of these a plurality of first switches that second end of this each second switch is coupled is first ends of first switch in the one other pixel zone adjacent with this second switch place pixel region, wherein, should be the adjacent pixel region that is positioned at perpendicular on the gate line direction with its place pixel region adjacent pixel region; And

One grid passage is coupled between first end and second end of this second switch; And

One gate terminal, be coupled in a corresponding gate line of these many gate lines, the corresponding gate line that the gate terminal of this each second switch is coupled in these many gate lines is the same corresponding gate line with these many gate lines that gate terminal was coupled of first switch, and, this first switch and the second switch of this moment belong in the same pixel region, wherein this second switch from this signal that this corresponding gate line received, is controlled the conducting state of first end and this grid passage between second end of this second switch according to this gate terminal;

Wherein, the breadth length ratio of the grid passage of this first switch is greater than the breadth length ratio of the grid passage of this second switch, and this first switch comprises one first end electric capacity, is coupled between the gate terminal and first end of this first switch; And this second switch comprises one first end electric capacity, is coupled between the gate terminal and first end of this second switch; Wherein the capacitance of the first end electric capacity of this first switch is greater than the capacitance of the first end electric capacity of this second switch, and the capacitance of the first end electric capacity of this first switch meets following formula:

Wherein Cgs1 is the capacitance of the first end electric capacity of this first switch, and Cgs2 is the capacitance of the first end electric capacity of this second switch, C_BBe the capacitance of this first liquid crystal capacitance, C_DCapacitance for this second liquid crystal capacitance.

14. liquid crystal indicator according to claim 13 is characterized in that, the capacity area of the first end electric capacity of this first switch is greater than the capacity area of the first end electric capacity of this second switch.

15. liquid crystal indicator according to claim 13 is characterized in that, the first end electric capacity of this first switch has an insulation course, and the first end electric capacity of this second switch has an insulation course; The thickness of insulating layer of the first end electric capacity of this first switch is less than the thickness of insulating layer of the first end electric capacity of this second switch; And the dielectric coefficient of the insulation course of the first end electric capacity of this first switch is greater than the dielectric coefficient of the insulation course of the first end electric capacity of this second switch.

16. the liquid crystal indicator of a tool uniform feed-through voltage is characterized in that, comprises:

Many the data lines that be arranged in parallel, each bar data line receives a corresponding data-signal;

Many the gate lines that be arranged in parallel, orthogonal with these many data lines, each bar gate line receives a corresponding signal;

Many first common electrode lines that be arranged in parallel, in order to receiving one first common voltage, these many first common electrode line parallels or perpendicular to these many gate lines;

Many second common electrode lines that be arranged in parallel, in order to receiving one second common voltage, these many second common electrode line parallels or perpendicular to these many gate lines;

A plurality of storage elements, each storage element comprises:

One first liquid crystal capacitance, it comprises corresponding first common electrode lines that one first end is coupled in these many first common electrode lines, and one second end; And

One second liquid crystal capacitance, it comprises corresponding second common electrode lines that one first end is coupled in these many second common electrode lines, and one second end;

A plurality of first switches, each first switch comprises:

One first end is coupled in second end of corresponding first liquid crystal capacitance of these a plurality of first liquid crystal capacitances;

One second end is coupled in a corresponding data line of these many data lines;

One grid passage is coupled between first end and second end of this first switch; And

One gate terminal, be coupled in a corresponding gate line of these many gate lines, wherein this first switch from this signal that this corresponding gate line received, is controlled the conducting state of first end and this grid passage between second end of this first switch according to this gate terminal; And

A plurality of second switches, each second switch comprises:

One first end is coupled in second end of corresponding second liquid crystal capacitance of these a plurality of second liquid crystal capacitances;

One second end, be coupled in one first end of corresponding first switch of these a plurality of first switches, first end of one corresponding first switch of these a plurality of first switches that second end of this each second switch is coupled is first ends of first switch in the one other pixel zone adjacent with this second switch place pixel region, wherein, should be the adjacent pixel region that is positioned at perpendicular on the gate line direction with its place pixel region adjacent pixel region;

One grid passage is coupled between first end and second end of this second switch; And

One gate terminal, be coupled in a corresponding gate line of these many gate lines, the corresponding gate line that the gate terminal of this each second switch is coupled in these many gate lines is the same corresponding gate line with these many gate lines that gate terminal was coupled of first switch, and, this first switch and the second switch of this moment belong in the same pixel region, wherein this second switch from this signal that this corresponding gate line received, is controlled the conducting state of first end and this grid passage between second end of this second switch according to this gate terminal;

Wherein, the breadth length ratio of the grid passage of this first switch is greater than the breadth length ratio of the grid passage of this second switch, and this first switch comprises one first end electric capacity, is coupled between the gate terminal and first end of this first switch; And this second switch comprises one first end electric capacity, is coupled between the gate terminal and first end of this second switch; Wherein the capacitance of the first end electric capacity of this first switch is greater than the capacitance of the first end electric capacity of this second switch, and the capacitance of the first end electric capacity of this first switch meets following formula:

Wherein Cgs1 is the capacitance of the first end electric capacity of this first switch, and Cgs2 is the capacitance of the first end electric capacity of this second switch, C_BBe the capacitance of this first liquid crystal capacitance, C_DCapacitance for this second liquid crystal capacitance.

17. liquid crystal indicator according to claim 16 is characterized in that, the capacity area of the first end electric capacity of this first switch is greater than the capacity area of the first end electric capacity of this second switch.

18. liquid crystal indicator according to claim 16 is characterized in that, the first end electric capacity of this first switch has an insulation course, and the first end electric capacity of this second switch has an insulation course; The thickness of insulating layer of the first end electric capacity of this first switch is less than the thickness of insulating layer of the first end electric capacity of this second switch; And the dielectric coefficient of the insulation course of the first end electric capacity of this first switch is greater than the dielectric coefficient of the insulation course of the first end electric capacity of this second switch.

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