技术领域technical field
本发明涉及显示技术领域，特别涉及一种柔性显示面板的分辨率更新装置、一种用于柔性显示面板的移位寄存器、一种柔性显示面板以及一种显示设备。The present invention relates to the field of display technology, in particular to a resolution update device for a flexible display panel, a shift register for a flexible display panel, a flexible display panel and a display device.
背景技术Background technique
随着OLED(Organic Light Emitting Diode，有机发光二极管)技术的普及，未来柔性面板将能够很方便的折叠显示，当柔性面板的显示面积发生变化时，急需显示驱动器能够实时更新分辨率以适应柔性面板的折叠，因此，如何快速检测显示面积的变化变得越来越重要。With the popularization of OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) technology, flexible panels will be able to be easily folded and displayed in the future. When the display area of the flexible panel changes, it is urgently needed for the display driver to be able to update the resolution in real time to adapt to the flexible panel. Therefore, how to quickly detect the change of the display area becomes more and more important.
发明内容SUMMARY OF THE INVENTION
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的第一个目的在于提出一种柔性显示面板的分辨率更新装置，能够快速且准确的定位柔性显示面板的折叠位置，以根据折叠位置进行分辨率更新，而且省去了柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the first object of the present invention is to propose a resolution updating device for a flexible display panel, which can quickly and accurately locate the folding position of the flexible display panel, so as to update the resolution according to the folding position, and save the flexible The detection sensors and the like arranged on the outside of the display panel make the appearance thin and beautiful.
本发明的第二个目的在于提出一种用于柔性显示面板的移位寄存器。本发明的第三个目的在于提出一种柔性显示面板。本发明的第四个目的在于提出另一种柔性显示面板。本发明的第五个目的在于提出一种显示设备。The second object of the present invention is to provide a shift register for a flexible display panel. The third objective of the present invention is to provide a flexible display panel. The fourth objective of the present invention is to provide another flexible display panel. A fifth object of the present invention is to provide a display device.
为实现上述目的，本发明第一方面实施例提出了一种柔性显示面板的分辨率更新装置，所述柔性显示面板包括N行像素单元和对应N行像素单元设置的N个移位寄存器，其中，N为大于1的整数，所述分辨率更新装置包括：N个检测单元，所述N个检测单元分别与所述N个移位寄存器和所述N行像素单元对应相连，其中每个检测单元包括：压敏双栅晶体管，所述压敏双栅晶体管的第一极与相应的移位寄存器的第一时钟信号输入端相连，所述压敏双栅晶体管的控制极与所述相应的移位寄存器的上拉节点相连；第一晶体管，所述第一晶体管的第一极与相应的像素单元的公共电极相连，所述第一晶体管的控制极与所述压敏双栅晶体管的第二极相连，其中，当所述压敏双栅晶体管受压且与该压敏双栅晶体管相连的上拉节点和第一时钟信号输入端提供的时钟信号均为高电平时，所述第一晶体管导通，所述公共电极的电压通过所述第一晶体管输出；控制单元，所述控制单元分别与所述每个检测单元中的第一晶体管的第二极相连，所述控制单元用于根据所述公共电极的电压和所述第一时钟信号输入端提供的时钟信号的时序定位所述柔性显示面板的受压位置，并根据所述受压位置对所述柔性显示面板的分辨率进行更新。In order to achieve the above object, the embodiment of the first aspect of the present invention proposes a resolution update device for a flexible display panel, the flexible display panel includes N rows of pixel units and N shift registers set corresponding to the N rows of pixel units, wherein , N is an integer greater than 1, the resolution update device includes: N detection units, the N detection units are respectively connected to the N shift registers and the N row of pixel units, wherein each detection The unit includes: a pressure-sensitive double-gate transistor, the first pole of the pressure-sensitive double-gate transistor is connected to the first clock signal input terminal of the corresponding shift register, and the control pole of the pressure-sensitive double-gate transistor is connected to the corresponding The pull-up node of the shift register is connected; the first transistor, the first electrode of the first transistor is connected with the common electrode of the corresponding pixel unit, the control electrode of the first transistor is connected with the first electrode of the pressure-sensitive double-gate transistor The two poles are connected, wherein, when the voltage-sensitive double-gate transistor is under pressure and the clock signal provided by the pull-up node connected to the voltage-sensitive double-gate transistor and the first clock signal input terminal are both high level, the first The transistor is turned on, and the voltage of the common electrode is output through the first transistor; a control unit, the control unit is respectively connected to the second pole of the first transistor in each detection unit, and the control unit is used for Locate the pressed position of the flexible display panel according to the voltage of the common electrode and the timing of the clock signal provided by the first clock signal input terminal, and adjust the resolution of the flexible display panel according to the pressed position renew.
根据本发明实施例的柔性显示面板的分辨率更新装置，通过将每个压敏双栅晶体管的第一极与相应的移位寄存器的第一时钟信号输入端相连，并将压敏双栅晶体管的控制极与相应的移位寄存器的上拉节点相连，以及将每个第一晶体管的第一极与相应的像素单元的公共电极相连，并将第一晶体管的控制极与压敏双栅晶体管的第二极相连，这样当压敏双栅晶体管受压且与该压敏双栅晶体管相连的上拉节点和第一时钟信号输入端提供的时钟信号均为高电平时，公共电极的电压通过第一晶体管输出，此时控制单元根据公共电极的电压和第一时钟信号输入端提供的时钟信号的时序即可定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。由此，该装置能够快速且准确的定位柔性显示面板的折叠位置，以根据折叠位置进行分辨率更新，而且省去了柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the device for updating the resolution of a flexible display panel in an embodiment of the present invention, the first electrode of each pressure-sensitive double-gate transistor is connected to the first clock signal input end of the corresponding shift register, and the voltage-sensitive double-gate transistor The control electrode of the first transistor is connected to the pull-up node of the corresponding shift register, and the first electrode of each first transistor is connected to the common electrode of the corresponding pixel unit, and the control electrode of the first transistor is connected to the voltage-sensitive double-gate transistor. In this way, when the voltage-sensitive double-gate transistor is pressed and the clock signal provided by the pull-up node connected to the voltage-sensitive double-gate transistor and the first clock signal input terminal are both high level, the voltage of the common electrode passes through The output of the first transistor, at this time, the control unit can locate the pressed position of the flexible display panel according to the voltage of the common electrode and the timing of the clock signal provided by the first clock signal input terminal, and adjust the resolution of the flexible display panel according to the pressed position to update. Therefore, the device can quickly and accurately locate the folding position of the flexible display panel, so as to update the resolution according to the folding position, and saves the detection sensor and the like arranged outside the flexible display panel, making the appearance thin and beautiful.
根据本发明的一个实施例，上述的柔性显示面板的分辨率更新装置，还包括：N个复位电路，所述N个复位电路中的每个复位电路分别与所述N个移位寄存器的下拉节点、复位信号输入端、低电平信号输入端以及所述N个检测单元中的压敏双栅晶体管的第二极对应相连，所述复位电路用于在所述下拉节点或者所述复位信号输入端提供的复位信号为低电平时，将所述压敏双栅晶体管的第二极下拉至所述低电平信号输入端提供的低电平，以使所述第一晶体管处于关断状态。According to an embodiment of the present invention, the above-mentioned resolution update device for a flexible display panel further includes: N reset circuits, each of the N reset circuits is connected to the pull-down circuit of the N shift registers respectively. The node, the reset signal input end, the low level signal input end and the second poles of the pressure-sensitive double-gate transistors in the N detection units are correspondingly connected, and the reset circuit is used for the pull-down node or the reset signal When the reset signal provided by the input terminal is at low level, pull down the second pole of the pressure-sensitive double-gate transistor to the low level provided by the low-level signal input terminal, so that the first transistor is in an off state .
根据本发明的一个实施例，所述复位电路包括：第二晶体管，所述第二晶体管的第一极与所述压敏双栅晶体管的第二极相连，所述第二晶体管的第二极与所述低电平信号输入端相连，所述第二晶体管的控制极与所述复位信号输入端相连；第三晶体管，所述第三晶体管的第一极与所述压敏双栅晶体管的第二极相连，所述第三晶体管的第二极与所述低电平信号输入端相连，所述第三晶体管的控制极与所述下拉节点相连。According to an embodiment of the present invention, the reset circuit includes: a second transistor, the first pole of the second transistor is connected to the second pole of the voltage-sensitive double-gate transistor, and the second pole of the second transistor Connected to the low-level signal input terminal, the control pole of the second transistor is connected to the reset signal input terminal; the third transistor, the first pole of the third transistor is connected to the voltage-sensitive double-gate transistor The second pole is connected, the second pole of the third transistor is connected with the low level signal input terminal, and the control pole of the third transistor is connected with the pull-down node.
根据本发明的一个实施例，所述每个检测单元中的第一晶体管设置在对应的像素单元中。According to an embodiment of the present invention, the first transistor in each detection unit is arranged in a corresponding pixel unit.
为实现上述目的，本发明第二方面实施例提出了一种用于柔性显示面板的移位寄存器，所述移位寄存器包括栅极信号输入端、第一时钟信号输入端、复位信号输入端、低电平信号输入端、栅极信号输出端、上拉节点和下拉节点，所述移位寄存器还包括：压敏双栅晶体管，所述压敏双栅晶体管的第一极与所述第一时钟信号输入端相连，所述压敏双栅晶体管的控制极与所述上拉节点相连；第一晶体管，所述第一晶体管的第一极与所述移位寄存器对应的像素单元的公共电极相连，所述第一晶体管的控制极与所述压敏双栅晶体管的第二极相连，所述第一晶体管的第二极与外部控制单元相连，其中，当所述压敏双栅晶体管受压且所述上拉节点和所述第一时钟信号输入端提供的时钟信号均为高电平时，所述第一晶体管导通，所述公共电极的电压通过所述第一晶体管输出至所述外部控制单元，以便所述外部控制单元根据所述公共电极的电压和所述第一时钟信号输入端提供的时钟信号的时序定位所述柔性显示面板的受压位置，并根据所述受压位置对所述柔性显示面板的分辨率进行更新。In order to achieve the above object, the embodiment of the second aspect of the present invention proposes a shift register for a flexible display panel, the shift register includes a gate signal input terminal, a first clock signal input terminal, a reset signal input terminal, A low-level signal input terminal, a gate signal output terminal, a pull-up node and a pull-down node, the shift register further includes: a voltage-sensitive double-gate transistor, the first pole of the pressure-sensitive double-gate transistor is connected to the first The clock signal input terminal is connected, and the control pole of the voltage-sensitive double-gate transistor is connected to the pull-up node; the first transistor, the first pole of the first transistor is connected to the common electrode of the pixel unit corresponding to the shift register connected, the control pole of the first transistor is connected with the second pole of the pressure-sensitive double-gate transistor, and the second pole of the first transistor is connected with the external control unit, wherein, when the pressure-sensitive double-gate transistor is controlled voltage and the clock signals provided by the pull-up node and the first clock signal input terminal are both at high level, the first transistor is turned on, and the voltage of the common electrode is output to the An external control unit, so that the external control unit locates the pressed position of the flexible display panel according to the voltage of the common electrode and the timing of the clock signal provided by the first clock signal input terminal, and according to the pressed position The resolution of the flexible display panel is updated.
根据本发明实施例的用于柔性显示面板的移位寄存器，通过将压敏双栅晶体管的第一极与第一时钟信号输入端相连，并将压敏双栅晶体管的控制极与上拉节点相连，以及将第一晶体管的第一极与移位寄存器对应的像素单元的公共电极相连，并将第一晶体管的控制极与压敏双栅晶体管的第二极相连，这样当压敏双栅晶体管受压且上拉节点和第一时钟信号输入端提供的时钟信号均为高电平时，公共电极的电压通过第一晶体管输出至外部控制单元，以便外部控制单元根据公共电极的电压和第一时钟信号输入端提供的时钟信号的时序定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。由此，通过该移位寄存器能够快速且准确的定位柔性显示面板的折叠位置，以根据折叠位置进行分辨率更新，而且省去了柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the shift register for a flexible display panel according to an embodiment of the present invention, the first electrode of the pressure-sensitive double-gate transistor is connected to the first clock signal input terminal, and the control electrode of the pressure-sensitive double-gate transistor is connected to the pull-up node. and connect the first pole of the first transistor to the common electrode of the pixel unit corresponding to the shift register, and connect the control pole of the first transistor to the second pole of the pressure-sensitive double-gate transistor, so that when the pressure-sensitive double-gate When the transistor is under pressure and the clock signals provided by the pull-up node and the first clock signal input end are both at high level, the voltage of the common electrode is output to the external control unit through the first transistor, so that the external control unit The timing of the clock signal provided by the clock signal input terminal locates the pressed position of the flexible display panel, and updates the resolution of the flexible display panel according to the pressed position. Thus, the shift register can quickly and accurately locate the folding position of the flexible display panel, so as to update the resolution according to the folding position, and omit the detection sensors provided outside the flexible display panel, making the appearance thinner and more beautiful.
根据本发明的一个实施例，上述的用于柔性显示面板的移位寄存器，还包括：复位电路，所述复位电路分别与所述下拉节点、所述复位信号输入端、所述低电平信号输入端和所述压敏双栅晶体管的第二极相连，所述复位电路用于在所述下拉节点或者所述复位信号输入端提供的复位信号为高电平时，将所述压敏双栅晶体管的第二极下拉至所述低电平信号输入端提供的低电平，以使所述第一晶体管处于关断状态。According to an embodiment of the present invention, the above-mentioned shift register for a flexible display panel further includes: a reset circuit, and the reset circuit is connected to the pull-down node, the reset signal input terminal, and the low-level signal respectively. The input end is connected to the second pole of the pressure-sensitive double-gate transistor, and the reset circuit is used to set the pressure-sensitive double-gate The second electrode of the transistor is pulled down to the low level provided by the low level signal input terminal, so that the first transistor is in an off state.
根据本发明的一个实施例，所述复位电路包括：第二晶体管，所述第二晶体管的第一极与所述压敏双栅晶体管的第二极相连，所述第二晶体管的第二极与所述低电平信号输入端相连，所述第二晶体管的控制极与所述复位信号输入端相连；第三晶体管，所述第三晶体管的第一极与所述压敏双栅晶体管的第二极相连，所述第三晶体管的第二极与所述低电平信号输入端相连，所述第三晶体管的控制极与所述下拉节点相连。According to an embodiment of the present invention, the reset circuit includes: a second transistor, the first pole of the second transistor is connected to the second pole of the voltage-sensitive double-gate transistor, and the second pole of the second transistor Connected to the low-level signal input terminal, the control pole of the second transistor is connected to the reset signal input terminal; the third transistor, the first pole of the third transistor is connected to the voltage-sensitive double-gate transistor The second pole is connected, the second pole of the third transistor is connected with the low level signal input terminal, and the control pole of the third transistor is connected with the pull-down node.
为实现上述目的，本发明第三方面实施例提出了一种柔性显示面板，其包括上述的分辨率更新装置。In order to achieve the above object, the embodiment of the third aspect of the present invention provides a flexible display panel, which includes the above resolution updating device.
根据本发明实施例的柔性显示面板，通过上述的分辨率更新装置，能够快速且准确的定位柔性显示面板的折叠位置，实现对柔性显示面板分辨率的快速准确更新，而且省去了在柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the flexible display panel of the embodiment of the present invention, the above-mentioned resolution update device can quickly and accurately locate the folding position of the flexible display panel, realize the fast and accurate update of the resolution of the flexible display panel, and save the The detection sensors installed outside the panel make the appearance thin and beautiful.
为实现上述目的，本发明第四方面实施例提出了一种柔性显示面板，包括：N行像素单元；N个移位寄存器，所述N个移位寄存器中的每个移位寄存器为上述的移位寄存器，其中，第1个移位寄存器的栅极信号输入端与启动信号线相连，所述第1个移位寄存器的复位信号输入端与第2个移位寄存器的栅极信号输出端相连，第i个移位寄存器的栅极信号输入端与第i-1个移位寄存器的栅极信号输出端相连，所述第i个移位寄存器的复位信号输入端与第i+1个移位寄存器的栅极信号输出端相连，其中，i为大于2且小于N的整数。In order to achieve the above object, the embodiment of the fourth aspect of the present invention proposes a flexible display panel, including: N rows of pixel units; N shift registers, each of the N shift registers is the above-mentioned A shift register, wherein the gate signal input end of the first shift register is connected to the start signal line, and the reset signal input end of the first shift register is connected to the gate signal output end of the second shift register connected, the gate signal input end of the i-th shift register is connected to the gate signal output end of the i-1 shift register, and the reset signal input end of the i-th shift register is connected to the i+1th shift register The gate signal output terminals of the shift register are connected, wherein, i is an integer greater than 2 and less than N.
根据本发明实施例的柔性显示面板，通过上述的移位寄存器，能够快速且准确的定位柔性显示面板的折叠位置，实现对柔性显示面板分辨率的快速准确更新，同时省去了在柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the flexible display panel of the embodiment of the present invention, through the above-mentioned shift register, the folding position of the flexible display panel can be quickly and accurately positioned, and the resolution of the flexible display panel can be updated quickly and accurately. The detection sensors installed outside make the appearance thin and beautiful.
为实现上述目的，本发明第五方面实施例提出了一种显示设备，其包括本发明第三方面或者第四方面实施例提出的柔性显示面板。To achieve the above object, the embodiment of the fifth aspect of the present invention provides a display device, which includes the flexible display panel provided by the embodiment of the third aspect or the fourth aspect of the present invention.
根据本发明实施例的显示设备，通过上述的柔性显示面板，能够快速且准确的实现分辨率的更新，同时可以使得外观轻薄美观。According to the display device according to the embodiment of the present invention, the resolution can be updated quickly and accurately through the above flexible display panel, and at the same time, the appearance can be made light, thin and beautiful.
附图说明Description of drawings
图1是根据本发明一个实施例的柔性显示面板的分辨率更新装置的结构示意图；FIG. 1 is a schematic structural diagram of a resolution updating device for a flexible display panel according to an embodiment of the present invention;
图2是根据本发明一个实施例的移位寄存器的结构示意图；Fig. 2 is a schematic structural diagram of a shift register according to an embodiment of the present invention;
图3a是图2所示的移位寄存器未被折叠时的工作时序图；Fig. 3a is a working sequence diagram when the shift register shown in Fig. 2 is not folded;
图3b是图2所示的移位寄存器被折叠时的工作时序图；Fig. 3b is a working sequence diagram when the shift register shown in Fig. 2 is folded;
图4是根据本发明另一个实施例的柔性显示面板的分辨率更新装置的结构示意图；4 is a schematic structural diagram of a resolution updating device for a flexible display panel according to another embodiment of the present invention;
图5是根据本发明另一个实施例的移位寄存器的结构示意图；5 is a schematic structural diagram of a shift register according to another embodiment of the present invention;
图6是根据本发明实施例的柔性显示面板的方框示意图；6 is a schematic block diagram of a flexible display panel according to an embodiment of the present invention;
图7是根据本发明一个实施例的用于柔性显示面板的移位寄存器的电路示意图；7 is a schematic circuit diagram of a shift register for a flexible display panel according to an embodiment of the present invention;
图8是根据本发明另一个实施例的用于柔性显示面板的移位寄存器的电路示意图；8 is a schematic circuit diagram of a shift register for a flexible display panel according to another embodiment of the present invention;
图9是根据本发明一个实施例的柔性显示面板的结构示意图；FIG. 9 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention;
图10是图9所示的柔性显示面板的工作时序图；FIG. 10 is a working sequence diagram of the flexible display panel shown in FIG. 9;
图11是柔性显示面板折叠前后的示意图；Fig. 11 is a schematic diagram of the flexible display panel before and after folding;
图12是根据本发明另一个实施例的柔性显示面板的结构示意图；Fig. 12 is a schematic structural diagram of a flexible display panel according to another embodiment of the present invention;
图13是根据本发明实施例的显示设备的方框示意图。FIG. 13 is a schematic block diagram of a display device according to an embodiment of the present invention.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
下面参照附图来描述根据本发明实施例提出的柔性显示面板的分辨率更新装置、用于柔性显示面板的移位寄存器、柔性显示面板以及显示设备。A resolution update device for a flexible display panel, a shift register for a flexible display panel, a flexible display panel, and a display device according to embodiments of the present invention will be described below with reference to the accompanying drawings.
图1是根据本发明一个实施例的柔性显示面板的分辨率更新装置的结构示意图。在本发明的实施例中，柔性显示面板包括N行像素单元和对应N行像素单元设置的N个移位寄存器，其中，N为大于1的整数。FIG. 1 is a schematic structural diagram of a resolution updating device for a flexible display panel according to an embodiment of the present invention. In an embodiment of the present invention, the flexible display panel includes N rows of pixel units and N shift registers corresponding to the N rows of pixel units, where N is an integer greater than 1.
如图1所示，该柔性显示面板的分辨率更新装置可包括：N个检测单元和控制单元20，N个检测单元分别与N个移位寄存器和N行像素单元对应相连。As shown in FIG. 1 , the device for updating the resolution of the flexible display panel may include: N detection units and a control unit 20 , and the N detection units are respectively connected to N shift registers and N rows of pixel units.
其中，每个检测单元包括压敏双栅晶体管MAi(1≤i≤N)和第一晶体管T1i，压敏双栅晶体管MAi的第一极与相应的移位寄存器的第一时钟信号输入端CLK1i相连，压敏双栅晶体管MAi的控制极与相应的移位寄存器的上拉节点PUi相连；第一晶体管T1i的第一极与相应的像素单元的公共电极Vcomi相连，第一晶体管T1的控制极与压敏双栅晶体管MAi的第二极相连。其中，当压敏双栅晶体管MAi受压且与该压敏双栅晶体管MAi相连的上拉节点PUi和第一时钟信号输入端CLK1i提供的时钟信号均为高电平时，第一晶体管T1i导通，公共电极Vcomi的电压通过第一晶体管T1i输出。Wherein, each detection unit includes a pressure-sensitive double-gate transistor MAi (1≤i≤N) and a first transistor T1i, the first pole of the pressure-sensitive double-gate transistor MAi is connected to the first clock signal input terminal CLK1i of the corresponding shift register The control pole of the pressure-sensitive double-gate transistor MAi is connected to the pull-up node PUi of the corresponding shift register; the first pole of the first transistor T1i is connected to the common electrode Vcomi of the corresponding pixel unit, and the control pole of the first transistor T1 It is connected with the second pole of the voltage-sensitive double-gate transistor MAi. Wherein, when the voltage-sensitive double-gate transistor MAi is under pressure and the clock signal provided by the pull-up node PUi connected to the pressure-sensitive double-gate transistor MAi and the first clock signal input terminal CLK1i are both high level, the first transistor T1i is turned on , the voltage of the common electrode Vcomi is output through the first transistor T1i.
控制单元20分别与每个检测单元中的第一晶体管T1i的第二极相连，控制单元20用于根据公共电极Vcomi的电压和第一时钟信号输入端CLK1i提供的时钟信号的时序定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。The control unit 20 is respectively connected to the second pole of the first transistor T1i in each detection unit, and the control unit 20 is used for positioning the flexible display panel according to the timing of the voltage of the common electrode Vcomi and the clock signal provided by the first clock signal input terminal CLK1i The pressured position of the flexible display panel is updated according to the pressured position.
根据本发明的一个实施例，每个检测单元中的第一晶体管T1i设置在对应的像素单元中。According to an embodiment of the present invention, the first transistor T1i in each detection unit is arranged in a corresponding pixel unit.
具体而言，在本发明的实施例中，分辨率更新装置中的压敏双栅晶体管MAi可设置在GOA(Gate Driver On Array，阵列基板栅极驱动)单元中，第一晶体管T1i可设置在AA区(Active Area，显示阵列区)。更进一步地，当柔性显示面板的行扫描采用移位寄存器时，压敏双栅晶体管MAi可设置在相应的移位寄存器中，第一晶体管T1i可设置在相应的像素单元中，控制单元20可以为外部SOC(System-on-a-Chip，系统芯片)。Specifically, in an embodiment of the present invention, the voltage-sensitive double-gate transistor MAi in the resolution updating device can be set in a GOA (Gate Driver On Array, array substrate gate drive) unit, and the first transistor T1i can be set in AA area (Active Area, display array area). Furthermore, when the row scanning of the flexible display panel adopts a shift register, the pressure-sensitive double-gate transistor MAi can be set in the corresponding shift register, the first transistor T1i can be set in the corresponding pixel unit, and the control unit 20 can It is an external SOC (System-on-a-Chip, system chip).
作为一个具体示例，当压敏双栅晶体管MAi设置在相应的移位寄存器中时，其连接关系如图2所示，压敏双栅晶体管MAi的第一极与该移位寄存器的第一时钟信号输入端CLK1i相连，压敏双栅晶体管MAi的控制极与上拉节点PUi相连，压敏双栅晶体管MAi的第二极作为折叠信号输出端G(i)-Sen与设置在相应像素单元中的第一晶体管T1i的控制极相连。As a specific example, when the pressure-sensitive double-gate transistor MAi is set in the corresponding shift register, its connection relationship is shown in Figure 2, the first pole of the pressure-sensitive double-gate transistor MAi is connected to the first clock of the shift register The signal input terminal CLK1i is connected, the control electrode of the pressure-sensitive double-gate transistor MAi is connected to the pull-up node PUi, and the second pole of the pressure-sensitive double-gate transistor MAi is used as the folding signal output terminal G(i)-Sen and is set in the corresponding pixel unit The control electrode of the first transistor T1i is connected.
当柔性显示面板未被折叠时，移位寄存器的工作时序如图3a所示：When the flexible display panel is not folded, the working sequence of the shift register is shown in Figure 3a:
第一阶段：当栅极信号输入端Inputi没有信号输入时，虽然第一时钟信号输入端CLK1i提供的时钟信号会出现高电平，但是由于上拉节点PUi点保持低电平，晶体管M9处于关断状态，所以栅极信号输出端G(i)为低电平。The first stage: when there is no signal input at the gate signal input terminal Inputi, although the clock signal provided by the first clock signal input terminal CLK1i will appear at a high level, but because the pull-up node PUi remains at a low level, the transistor M9 is turned off Off state, so the gate signal output terminal G(i) is low level.
第二阶段：当栅极信号输入端Inputi有信号输入时，晶体管M1导通，使得上拉节点PUi由低电平变为高电平，晶体管M9导通，但是由于此时第一时钟信号输入端CLK1i提供的时钟信号为低电平，所以栅极信号输出端G(i)仍为低电平。The second stage: when the gate signal input terminal Inputi has a signal input, the transistor M1 is turned on, so that the pull-up node PUi changes from low level to high level, and the transistor M9 is turned on, but because the first clock signal is input at this time The clock signal provided by terminal CLK1i is at low level, so the gate signal output terminal G(i) is still at low level.
第三阶段：当第一时钟信号输入端CLK1i提供的时钟信号由低电平变为高电平时，由于上拉节点PUi已经为高电平，所以晶体管M9导通，栅极信号输出端G(i)会输出高电平。由于电容C1和晶体管M9自身的寄生电容存在，随着栅极信号输出端G(i)电位的抬高，上拉节点PUi的电位会进一步抬高，从而使得晶体管M9的开启更大，进一步提高晶体管M9的充电能力，保证像素单元的充电。当上拉节点PUi为高电平时，晶体管M5和M7导通，使得下拉节点PDi保持低电平。The third stage: when the clock signal provided by the first clock signal input terminal CLK1i changes from a low level to a high level, since the pull-up node PUi is already at a high level, the transistor M9 is turned on, and the gate signal output terminal G( i) will output high level. Due to the existence of capacitor C1 and the parasitic capacitance of transistor M9 itself, as the potential of the gate signal output terminal G(i) rises, the potential of the pull-up node PUi will further rise, so that the turn-on of transistor M9 is greater, further improving The charging capability of the transistor M9 ensures the charging of the pixel unit. When the pull-up node PUi is at a high level, the transistors M5 and M7 are turned on, so that the pull-down node PDi remains at a low level.
第四阶段：当第一时钟信号输入端CLK1i提供的时钟信号变为低电平，并且复位信号输入端Reseti为高电平，晶体管M2和M11导通，上拉节点PUi和栅极信号输出端G(i)被拉低，输出关闭。并且在上拉节点PUi被拉低后，晶体管M5和晶体管M7关断，同时，在第二时钟信号输入端CLK2i的高电平作用下，晶体管M4和晶体管M6导通，下拉节点PDi充电为高电平，晶体管M3和晶体管M10导通，使得栅极信号输出端G(i)维持在低电平状态，以降低栅极信号输出端G(i)的噪声。The fourth stage: when the clock signal provided by the first clock signal input terminal CLK1i becomes low level, and the reset signal input terminal Reseti is high level, the transistors M2 and M11 are turned on, and the pull-up node PUi and the gate signal output terminal G(i) is pulled low and the output is turned off. And after the pull-up node PUi is pulled low, the transistor M5 and the transistor M7 are turned off, and at the same time, under the action of the high level of the second clock signal input terminal CLK2i, the transistor M4 and the transistor M6 are turned on, and the pull-down node PDi is charged to high Level, the transistor M3 and the transistor M10 are turned on, so that the gate signal output terminal G(i) is maintained at a low level state, so as to reduce the noise of the gate signal output terminal G(i).
需要说明的是，由于压敏双栅晶体管MAi需要在受压且上拉节点PUi为高电平时才会导通，所以当压敏双栅晶体管MAi未受压时，即使上拉节点PUi为高电平，压敏双栅晶体管MAi也将处于关断状态，折叠信号输出端G(i)-Sen无信号输出。It should be noted that since the voltage-sensitive double-gate transistor MAi needs to be turned on when it is under pressure and the pull-up node PUi is at a high level, when the voltage-sensitive double-gate transistor MAi is not under pressure, even if the pull-up node PUi is high level, the pressure-sensitive double-gate transistor MAi will also be in the off state, and the folding signal output terminal G(i)-Sen will have no signal output.
而当压敏双栅晶体管MAi受压时，移位寄存器的工作时序如图3b所示，其中，第一阶段和第四阶段与压敏双栅晶体管MAi未受压时的相同，而在第二阶段，当上拉节点PUi为高电平时，在压力和上拉节点PUi的共同作用下，压敏双栅晶体管MAi导通，但是由于第一时钟信号输入端CLK1i为低电平，所以折叠信号输出端G(i)-Sen为低电平，第一晶体管T1i处于关断状态。而在第三阶段，由于上拉节点PUi为高电平，且第一时钟信号输入端CLK1i也为高电平，所以此时折叠信号输出端G(i)-Sen变为高电平，第一晶体管T1i导通，控制单元20将获得像素单元的公共电极Vcomi的电压，然后控制单元20根据该电压和第一时钟信号输入端CLK1i提供的时钟信号的时序即可准确定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。When the voltage-sensitive double-gate transistor MAi is under pressure, the working sequence of the shift register is shown in Fig. In the second stage, when the pull-up node PUi is at a high level, under the joint action of the pressure and the pull-up node PUi, the voltage-sensitive double-gate transistor MAi is turned on, but because the first clock signal input terminal CLK1i is at a low level, the folding The signal output terminal G(i)-Sen is at low level, and the first transistor T1i is in an off state. In the third stage, since the pull-up node PUi is at a high level, and the first clock signal input terminal CLK1i is also at a high level, at this time the folding signal output terminal G(i)-Sen becomes a high level, and the first Once the transistor T1i is turned on, the control unit 20 will obtain the voltage of the common electrode Vcomi of the pixel unit, and then the control unit 20 can accurately locate the receiving terminal of the flexible display panel according to the voltage and the timing of the clock signal provided by the first clock signal input terminal CLK1i. press position, and update the resolution of the flexible display panel according to the press position.
因此，通过上述示例可知，只需在原有的GOA单元的基础上添加压敏双栅晶体管，这样在该行GOA单元受到外界弯折压力，并且第一时钟信号输入端提供的时钟信号的高电平到来时，折叠信号输出端输出高电平，进一步打开AA区连接公共电极的第一晶体管，使得该行的公共电极的电压反馈至外部SOC，该外部SOC结合第一时钟信号输入端提供的时钟信号的时序和折叠信号输出端输出的信号的相位关系即可判断出受压行数，从而定位出柔性显示面板的折叠位置，进而通知显示驱动器打出新的分辨率，以适应当前柔性显示面板的显示面积。Therefore, it can be seen from the above example that only a pressure-sensitive double-gate transistor needs to be added on the basis of the original GOA unit, so that the GOA unit in this row is subjected to external bending pressure, and the high voltage of the clock signal provided by the first clock signal input terminal When Ping arrives, the folding signal output terminal outputs a high level, and further opens the first transistor connected to the common electrode in the AA area, so that the voltage of the common electrode of this row is fed back to the external SOC, and the external SOC is combined with the first clock signal input terminal. The timing of the clock signal and the phase relationship of the signal output by the folding signal output terminal can determine the number of lines under pressure, thereby locating the folding position of the flexible display panel, and then notify the display driver to display a new resolution to suit the current flexible display panel display area.
进一步地，根据本发明的一个实施例，如图4所示，上述的柔性显示面板的分辨率更新装置还包括：N个复位电路，N个复位电路中的每个复位电路分别与N个移位寄存器的下拉节点PDi、复位信号输入端Reseti、低电平信号输入端VGL以及N个检测单元中的压敏双栅晶体管MAi的第二极对应相连，复位电路用于在下拉节点PDi或者复位信号输入端Reseti提供的复位信号为低电平时，将压敏双栅晶体管MAi的第二极下拉至低电平信号输入端VGL提供的低电平，以使第一晶体管T1i处于关断状态。Further, according to an embodiment of the present invention, as shown in FIG. 4 , the above-mentioned device for updating the resolution of the flexible display panel further includes: N reset circuits, and each of the N reset circuits is connected to the N shifting circuits respectively. The pull-down node PDi of the bit register, the reset signal input terminal Reseti, the low-level signal input terminal VGL, and the second poles of the pressure-sensitive double-gate transistors MAi in the N detection units are connected correspondingly, and the reset circuit is used to reset the pull-down node PDi or When the reset signal provided by the signal input terminal Reseti is at low level, the second electrode of the voltage-sensitive double-gate transistor MAi is pulled down to the low level provided by the low-level signal input terminal VGL, so that the first transistor T1i is turned off.
再进一步地，如图4所示，复位电路包括第二晶体管T2i和第三晶体管T3i，第二晶体管T2i的第一极与压敏双栅晶体管MAi的第二极相连，第二晶体管T2i的第二极与低电平信号输入端VGL相连，第二晶体管T2i的控制极与复位信号输入端Reseti相连；第三晶体管T3i的第一极与压敏双栅晶体管MAi的第二极相连，第三晶体管T3i的第二极与低电平信号输入端VGL相连，第三晶体管T3i的控制极与下拉节点PDi相连。Further, as shown in FIG. 4 , the reset circuit includes a second transistor T2i and a third transistor T3i, the first pole of the second transistor T2i is connected to the second pole of the pressure-sensitive double-gate transistor MAi, and the second pole of the second transistor T2i The two poles are connected to the low-level signal input terminal VGL, the control pole of the second transistor T2i is connected to the reset signal input terminal Reseti; the first pole of the third transistor T3i is connected to the second pole of the voltage-sensitive double-gate transistor MAi, and the third The second pole of the transistor T3i is connected to the low-level signal input terminal VGL, and the control pole of the third transistor T3i is connected to the pull-down node PDi.
具体地，如图5所示，复位电路可设置在相应的移位寄存器中，当柔性显示面板未被折叠时，移位寄存器的工作时序这里就不再描述，而当柔性显示面板被折叠时，该移位寄存器的工作时序与图3b所示的工作时序相同，其区别在于：Specifically, as shown in Figure 5, the reset circuit can be set in the corresponding shift register. When the flexible display panel is not folded, the working sequence of the shift register will not be described here, and when the flexible display panel is folded , the working timing of the shift register is the same as that shown in Figure 3b, the difference is:
在第四阶段，当第一时钟信号输入端CLK1i提供的时钟信号变为低电平，并且复位信号输入端Reseti为高电平时，晶体管M2、晶体管M11和第三晶体管T3i导通，上拉节点PUi、栅极信号输出端G(i)和折叠信号输出端G(i)-Sen被拉低。并且在上拉节点PUi被拉低后，晶体管M5和晶体管M7关断，同时在第二时钟信号输入端CLK2i的高电平作用下，晶体管M4和晶体管M6导通，下拉节点PDi充电为高电平，晶体管M3、晶体管M10和第二晶体管T2i导通，使得栅极信号输出端G(i)和折叠信号输出端G(i)-Sen维持在低电平状态，以降低栅极信号输出端G(i)和折叠信号输出端G(i)-Sen的噪声。这样可以在该行像素单元被选择时，第一晶体管T1i导通，而在该行像素单元未被选择时，第一晶体管T1i一直处于关断状态，从而使得控制单元20获得一个方波信号，根据该方波信号快速且准确的定位出被折叠的位置，有效防止因第一晶体管误导通而出现误定位的问题。In the fourth stage, when the clock signal provided by the first clock signal input terminal CLK1i becomes low level, and the reset signal input terminal Reseti is high level, the transistor M2, the transistor M11 and the third transistor T3i are turned on, and the pull-up node PUi, the gate signal output terminal G(i) and the folding signal output terminal G(i)-Sen are pulled low. And after the pull-up node PUi is pulled low, the transistor M5 and the transistor M7 are turned off, and at the same time, under the action of the high level of the second clock signal input terminal CLK2i, the transistor M4 and the transistor M6 are turned on, and the pull-down node PDi is charged to a high voltage. level, the transistor M3, the transistor M10 and the second transistor T2i are turned on, so that the gate signal output terminal G(i) and the folding signal output terminal G(i)-Sen are maintained in a low level state, so as to reduce the gate signal output terminal G(i) and the noise at the folded signal output G(i)-Sen. In this way, when the row of pixel units is selected, the first transistor T1i is turned on, and when the row of pixel units is not selected, the first transistor T1i is always in the off state, so that the control unit 20 obtains a square wave signal, The folded position can be quickly and accurately located according to the square wave signal, which effectively prevents the problem of wrong positioning caused by the wrong conduction of the first transistor.
因此，通过上述示例可知，只需在原有的GOA单元以及AA区的基础上增加相应的晶体管，结合压敏双栅晶体管的特点，并对时钟信号加以利用，无需在屏幕外侧再布置检测传感器，即可实现分辨率的实时准确更新，即，可以精确到每一行位置，并且可以在每一帧对柔性显示面板进行分辨率更新，同时做到了外观的轻薄美观。Therefore, from the above example, it can be known that it is only necessary to add corresponding transistors on the basis of the original GOA unit and AA area, combine the characteristics of the pressure-sensitive double-gate transistor, and make use of the clock signal, without arranging detection sensors outside the screen. Real-time and accurate update of the resolution can be achieved, that is, the position of each row can be accurate, and the resolution of the flexible display panel can be updated in each frame, while achieving a thin, light and beautiful appearance.
需要说明的是，图2和图5仅是为了便于对本发明进行详细说明给出的具体示例，而对于其它的电路结构也属于本申请的保护范围内，而且第一晶体管不仅可以设置在对应像素单元中，也可以直接设置在相应的移位寄存器中。It should be noted that Fig. 2 and Fig. 5 are only specific examples for the convenience of describing the present invention in detail, and other circuit structures also belong to the protection scope of the present application, and the first transistor can not only be arranged in the corresponding pixel In the unit, it can also be directly set in the corresponding shift register.
综上所述，根据本发明实施例的柔性显示面板的分辨率更新装置，通过增设压敏双栅晶体管和第一晶体管，这样当压敏双栅晶体管受压且与该压敏双栅晶体管相连的上拉节点和第一时钟信号输入端提供的时钟信号均为高电平时，公共电极的电压通过第一晶体管输出，此时控制单元根据公共电极的电压和第一时钟信号输入端提供的时钟信号的时序即可定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。由此，该装置能够快速且准确的定位柔性显示面板的折叠位置，以根据折叠位置进行分辨率更新，而且省去了柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。To sum up, according to the resolution update device of the flexible display panel of the embodiment of the present invention, by adding a voltage-sensitive double-gate transistor and a first transistor, when the voltage-sensitive double-gate transistor is pressed and connected to the voltage-sensitive double-gate transistor When the pull-up node of the pull-up node and the clock signal provided by the first clock signal input end are both at high level, the voltage of the common electrode is output through the first transistor. At this time, the control unit The timing of the signal can locate the pressed position of the flexible display panel, and update the resolution of the flexible display panel according to the pressed position. Therefore, the device can quickly and accurately locate the folding position of the flexible display panel, so as to update the resolution according to the folding position, and saves the detection sensor and the like arranged outside the flexible display panel, making the appearance thin and beautiful.
图6是根据本发明实施例的柔性显示面板的方框示意图。如图6所示，该柔性显示面板1100包括上述的分辨率更新装置100。FIG. 6 is a schematic block diagram of a flexible display panel according to an embodiment of the present invention. As shown in FIG. 6 , the flexible display panel 1100 includes the above-mentioned resolution updating device 100 .
其中，柔性显示面板1100可以为OLED柔性显示面板或者LCD电子纸等。Wherein, the flexible display panel 1100 may be an OLED flexible display panel or an LCD electronic paper or the like.
根据本发明实施例的柔性显示面板，通过上述的分辨率更新装置，能够快速且准确的定位柔性显示面板的折叠位置，实现对柔性显示面板分辨率的快速准确更新，而且省去了在柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the flexible display panel of the embodiment of the present invention, the above-mentioned resolution update device can quickly and accurately locate the folding position of the flexible display panel, realize the fast and accurate update of the resolution of the flexible display panel, and save the The detection sensors installed outside the panel make the appearance thin and beautiful.
图7是根据本发明一个实施例的用于柔性显示面板的移位寄存器的电路示意图。如图7所示，该移位寄存器包括栅极信号输入端Input、第一时钟信号输入端CLK1、复位信号输入端Reset、低电平信号输入端VGL、栅极信号输出端G(i)、上拉节点PU、下拉节点PD、压敏双栅晶体管MA和第一晶体管T1。FIG. 7 is a schematic circuit diagram of a shift register for a flexible display panel according to an embodiment of the present invention. As shown in Figure 7, the shift register includes a gate signal input terminal Input, a first clock signal input terminal CLK1, a reset signal input terminal Reset, a low level signal input terminal VGL, a gate signal output terminal G(i), The pull-up node PU, the pull-down node PD, the voltage-sensitive double-gate transistor MA and the first transistor T1.
其中，压敏双栅晶体管MA的第一极与第一时钟信号输入端CLK1相连，压敏双栅晶体管MA的控制极与上拉节点PU相连；第一晶体管T1的第一极与移位寄存器对应的像素单元的公共电极Vcom相连，第一晶体管T1的控制极与压敏双栅晶体管MA的第二极相连，第一晶体管T1的第二极与外部控制单元40相连。其中，当压敏双栅晶体管MA受压且上拉节点PU和第一时钟信号输入端CLK1提供的时钟信号均为高电平时，第一晶体管T1导通，公共电极Vcom的电压通过第一晶体管T1输出至外部控制单元40，以便外部控制单元40根据公共电极Vcom的电压和第一时钟信号输入端CLK1提供的时钟信号的时序定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。Wherein, the first pole of the pressure-sensitive double-gate transistor MA is connected to the first clock signal input terminal CLK1, and the control pole of the pressure-sensitive double-gate transistor MA is connected to the pull-up node PU; the first pole of the first transistor T1 is connected to the shift register The common electrodes Vcom of the corresponding pixel units are connected, the control electrode of the first transistor T1 is connected with the second electrode of the voltage-sensitive double-gate transistor MA, and the second electrode of the first transistor T1 is connected with the external control unit 40 . Wherein, when the voltage-sensitive double-gate transistor MA is under pressure and the clock signal provided by the pull-up node PU and the first clock signal input terminal CLK1 are both high level, the first transistor T1 is turned on, and the voltage of the common electrode Vcom passes through the first transistor T1 is output to the external control unit 40, so that the external control unit 40 locates the pressed position of the flexible display panel according to the voltage of the common electrode Vcom and the timing of the clock signal provided by the first clock signal input terminal CLK1, and adjusts the flexible display panel according to the pressed position. The resolution of the panel is updated.
进一步地，根据本发明的一个实施例，如图8所示，上述的用于柔性显示面板的移位寄存器还包括：复位电路，复位电路分别与下拉节点PD、复位信号输入端Reset、低电平信号输入端VGL和压敏双栅晶体管MA的第二极相连，复位电路用于在下拉节点PD或者复位信号输入端Reset提供的复位信号为高电平时，将压敏双栅晶体管MA的第二极下拉至低电平信号输入端VGL提供的低电平，以使第一晶体管T1处于关断状态。Further, according to an embodiment of the present invention, as shown in FIG. 8 , the above-mentioned shift register for a flexible display panel further includes: a reset circuit, which is respectively connected to the pull-down node PD, the reset signal input terminal Reset, the low power The flat signal input terminal VGL is connected to the second pole of the varistor double-gate transistor MA, and the reset circuit is used to set the second electrode of the varistor double-gate transistor MA when the reset signal provided by the pull-down node PD or the reset signal input terminal Reset is at a high level The diode is pulled down to the low level provided by the low level signal input terminal VGL, so that the first transistor T1 is turned off.
再进一步地，如图8所示，复位电路包括第二晶体管T2和第三晶体管T3，第二晶体管T2的第一极与压敏双栅晶体管MA的第二极相连，第二晶体管T2的第二极与低电平信号输入端VGL相连，第二晶体管T2的控制极与复位信号输入端Reset相连；第三晶体管T3的第一极与压敏双栅晶体管MA的第二极相连，第三晶体管T3的第二极与低电平信号输入端VGL相连，第三晶体管T3的控制极与下拉节点PD相连。Further, as shown in FIG. 8 , the reset circuit includes a second transistor T2 and a third transistor T3, the first pole of the second transistor T2 is connected to the second pole of the voltage-sensitive double-gate transistor MA, and the first pole of the second transistor T2 The two poles are connected to the low-level signal input terminal VGL, the control pole of the second transistor T2 is connected to the reset signal input terminal Reset; the first pole of the third transistor T3 is connected to the second pole of the voltage-sensitive double-gate transistor MA, and the third pole is connected to the second transistor MA. The second pole of the transistor T3 is connected to the low-level signal input terminal VGL, and the control pole of the third transistor T3 is connected to the pull-down node PD.
需要说明的是，图7和图8所示的移位寄存器的工作原理可参见对图2和图5的描述，具体这里就不再详述。另外，图7和图8仅作为本发明的一个具体示例，并不作为对本发明的一个具体限定，只要在现有的移位寄存器的基础上增加压敏双栅晶体管和第一晶体管，并充分利用移位寄存器的时钟信号，即可能够实现对柔性显示面板的快速准确定位，从而实现分辨率的快速更新。It should be noted that the working principles of the shift register shown in FIG. 7 and FIG. 8 can be referred to the description of FIG. 2 and FIG. 5 , and will not be detailed here. In addition, FIG. 7 and FIG. 8 are only used as a specific example of the present invention, and not as a specific limitation of the present invention, as long as the pressure-sensitive double-gate transistor and the first transistor are added on the basis of the existing shift register, and fully By using the clock signal of the shift register, fast and accurate positioning of the flexible display panel can be realized, thereby realizing fast update of resolution.
根据本发明实施例的用于柔性显示面板的移位寄存器，通过将压敏双栅晶体管的第一极与第一时钟信号输入端相连，并将压敏双栅晶体管的控制极与上拉节点相连，以及将第一晶体管的第一极与移位寄存器对应的像素单元的公共电极相连，并将第一晶体管的控制极与压敏双栅晶体管的第二极相连，这样当压敏双栅晶体管受压且上拉节点和第一时钟信号输入端提供的时钟信号均为高电平时，公共电极的电压通过第一晶体管输出至外部控制单元，以便外部控制单元根据公共电极的电压和第一时钟信号输入端提供的时钟信号的时序定位柔性显示面板的受压位置，并根据受压位置对柔性显示面板的分辨率进行更新。由此，通过该移位寄存器能够快速且准确的定位柔性显示面板的折叠位置，以根据折叠位置进行分辨率更新，而且省去了柔性显示面板外侧设置的检测传感器等，使得外观轻薄美观。According to the shift register for a flexible display panel according to an embodiment of the present invention, the first electrode of the pressure-sensitive double-gate transistor is connected to the first clock signal input terminal, and the control electrode of the pressure-sensitive double-gate transistor is connected to the pull-up node. and connect the first pole of the first transistor to the common electrode of the pixel unit corresponding to the shift register, and connect the control pole of the first transistor to the second pole of the pressure-sensitive double-gate transistor, so that when the pressure-sensitive double-gate When the transistor is under pressure and the clock signals provided by the pull-up node and the first clock signal input end are both at high level, the voltage of the common electrode is output to the external control unit through the first transistor, so that the external control unit The timing of the clock signal provided by the clock signal input terminal locates the pressed position of the flexible display panel, and updates the resolution of the flexible display panel according to the pressed position. Thus, the shift register can quickly and accurately locate the folding position of the flexible display panel, so as to update the resolution according to the folding position, and omit the detection sensors provided outside the flexible display panel, making the appearance thinner and more beautiful.
图9是根据本发明一个实施例的柔性显示面板的结构示意图。如图9所示，该柔性显示面板包括：N行像素单元和N个移位寄存器。FIG. 9 is a schematic structural diagram of a flexible display panel according to an embodiment of the present invention. As shown in FIG. 9 , the flexible display panel includes: N rows of pixel units and N shift registers.
其中，N个移位寄存器中的每个移位寄存器为上述的移位寄存器(如图7或图8所示)，其中，第1个移位寄存器的栅极信号输入端与启动信号线相连，第1个移位寄存器的复位信号输入端与第2个移位寄存器的栅极信号输出端相连，第i个移位寄存器的栅极信号输入端与第i-1个移位寄存器的栅极信号输出端相连，第i个移位寄存器的复位信号输入端与第i+1个移位寄存器的栅极信号输出端相连，其中，i为大于2且小于N的整数。Wherein, each shift register in the N shift registers is the above-mentioned shift register (as shown in Figure 7 or Figure 8), wherein, the gate signal input terminal of the first shift register is connected to the start signal line , the reset signal input terminal of the first shift register is connected to the gate signal output terminal of the second shift register, the gate signal input terminal of the ith shift register is connected to the gate signal output terminal of the i-1th shift register The pole signal output terminal is connected, and the reset signal input terminal of the ith shift register is connected with the gate signal output terminal of the i+1th shift register, wherein, i is an integer greater than 2 and less than N.
具体而言，通常对于小尺寸的柔性显示面板，由于栅极线的负载比较小，一般可采用GOA单元交叉驱动，即一部分GOA单元驱动奇数行栅极线，另一部分GOA单元驱动偶数行栅极线，两部分GOA单元互不干扰，但在时间上交错，以达到顺序开启栅极线的效果，该方式称为单边驱动，这样可以节省边框宽度和功耗，具体结构如图9所示。Specifically, for small-sized flexible display panels, because the load on the gate lines is relatively small, GOA units can generally be used for cross-driving, that is, some GOA units drive odd-numbered gate lines, and the other part of GOA units drive even-numbered gate lines. The two parts of the GOA units do not interfere with each other, but are staggered in time to achieve the effect of sequentially turning on the gate lines. This method is called unilateral drive, which can save frame width and power consumption. The specific structure is shown in Figure 9 .
当采用单边驱动方式时，移位寄存器71、73、…用于驱动奇数行栅极线，即分别驱动像素单元61、63、…的栅极线，同时移位寄存器72、74、…用于驱动偶数行栅极线，即分别驱动像素单元62、64、…的栅极线，并且由于移位寄存器71、73、…和移位寄存器72、74、…互不干扰，所以图9所示的柔性显示面板中的移位寄存器之间的级联关系仍满足上面所描述的连接关系。When the unilateral driving mode is adopted, the shift registers 71, 73, ... are used to drive the gate lines of odd rows, that is, the gate lines of the pixel units 61, 63, ... are respectively driven, and the shift registers 72, 74, ... are used It is used to drive the gate lines of the even rows, that is, to drive the gate lines of the pixel units 62, 64, ... respectively, and since the shift registers 71, 73, ... and the shift registers 72, 74, ... do not interfere with each other, so the The cascade relationship between the shift registers in the flexible display panel shown still satisfies the connection relationship described above.
即，对于奇数行，除了第1个移位寄存器的栅极信号输入端Input1与启动信号线STV相连，其余移位寄存器的栅极信号输入端均与上一行对应的移位寄存器的栅极信号输出端相连，并且复位信号输入端均与下一行对应的移位寄存器的栅极信号输出端相连。同样的，对于偶数行，也是除了第1个移位寄存器的栅极信号输入端Input2与启动信号线STV相连，其余移位寄存器的栅极信号输入端均与上一行对应的移位寄存器的栅极信号输出端相连，并且复位信号输入端均与下一行对应的移位寄存器的栅极信号输出端相连。这样，移位寄存器的折叠信号输出端输出的折叠信号就会受到下一行对应的移位寄存器的复位信号输入端提供的复位信号的限制，从而达到即使压力长时间存在，每一帧内也只会输出一次折叠信号，即每一帧输出一次公共电极的电压。而且，移位寄存器的折叠信号输出端不参与移位寄存器的级联，即不会输入上一行对应的移位寄存器的复位信号输入端提供的复位信号或者下一行对应的移位寄存器的栅极信号输入端提供的栅极信号，从而不会对非定位行产生影响。That is, for odd rows, except that the gate signal input terminal Input1 of the first shift register is connected to the start signal line STV, the gate signal input terminals of the other shift registers are all connected to the gate signal of the shift register corresponding to the previous row. The output ends are connected, and the reset signal input ends are connected to the gate signal output ends of the corresponding shift registers in the next row. Similarly, for the even-numbered rows, except that the gate signal input terminal Input2 of the first shift register is connected to the start signal line STV, the gate signal input terminals of the other shift registers are all connected to the gate signal input terminals of the shift register corresponding to the previous row. The pole signal output terminals are connected to each other, and the reset signal input terminals are connected to the gate signal output terminals of the shift register corresponding to the next row. In this way, the folding signal output by the folding signal output end of the shift register will be limited by the reset signal provided by the reset signal input end of the corresponding shift register in the next row, so that even if the pressure exists for a long time, only The folding signal will be output once, that is, the voltage of the common electrode will be output once every frame. Moreover, the folding signal output terminal of the shift register does not participate in the cascading of the shift register, that is, the reset signal provided by the reset signal input terminal of the corresponding shift register on the previous row or the gate of the corresponding shift register on the next row will not be input. The gate signal provided by the signal input terminal, so that it will not affect the non-positioning row.
图10是图9所示的柔性显示面板的工作时序图，从图10可以看出，奇数行与偶数行在时间上的交错主要是通过时钟信号CLK1、CLK2、CLK3和CLK4实现，并且当柔性显示面板被折叠时，每一帧只输出一次折叠信号，即每一帧，外部控制单元仅接收到一次公共电极的高电压，从而使得外部控制单元根据公共电极的高电压和时钟信号的时序快速且准确的定位出被折叠的行数，进而实现对分辨率的更新，如图11所示。Fig. 10 is a working timing diagram of the flexible display panel shown in Fig. 9. It can be seen from Fig. 10 that the interleaving of odd and even rows in time is mainly realized by clock signals CLK1, CLK2, CLK3 and CLK4, and when the flexible When the display panel is folded, the folding signal is only output once per frame, that is, each frame, the external control unit only receives the high voltage of the common electrode once, so that the external control unit can quickly And accurately locate the number of folded rows, and then realize updating of the resolution, as shown in FIG. 11 .
其中，需要说明的是，当施加在压敏双栅晶体管上的压力充足时，折叠信号输出端输出的折叠信号Sen1、Sen2、…将直接增加到高电平，而图10中的缓慢增加是表示施加在压敏双栅晶体管上的压力不足的情况。Among them, it should be noted that when the pressure applied to the pressure-sensitive double-gate transistor is sufficient, the folding signals Sen1, Sen2, ... output from the folding signal output terminal will directly increase to a high level, and the slow increase in Figure 10 is Indicates a condition where insufficient pressure is being applied to the varistor.
另外，对于中大尺寸的柔性显示面板，由于栅极线的负载比较大，为了能够正常开启栅极线，GOA单元采用多边驱动，即对于一行栅极线，左右两边均会有一个GOA单元对其进行充电，在此情况下，左右GOA单元的电路设计完全对称，称为双边驱动，具体结构如图12所示，这里不再详述。In addition, for medium and large-sized flexible display panels, due to the relatively large load on the gate lines, in order to normally turn on the gate lines, the GOA unit adopts multilateral drive, that is, for a row of gate lines, there will be a pair of GOA units on the left and right sides. It is charged. In this case, the circuit design of the left and right GOA units is completely symmetrical, which is called bilateral drive. The specific structure is shown in Figure 12, and will not be described in detail here.
图13是根据本发明实施例的显示设备的方框示意图，如图13所示，该显示设备1200包括上述的柔性显示面板200。FIG. 13 is a schematic block diagram of a display device according to an embodiment of the present invention. As shown in FIG. 13 , the display device 1200 includes the above-mentioned flexible display panel 200 .
根据本发明实施例的显示设备，通过上述的柔性显示面板，能够快速且准确的实现分辨率的更新，同时可以使得外观轻薄美观。According to the display device according to the embodiment of the present invention, the resolution can be updated quickly and accurately through the above flexible display panel, and at the same time, the appearance can be made light, thin and beautiful.
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686395.9ACN107256692B (en) | 2017-08-11 | 2017-08-11 | Resolution update device, shift register, flexible display panels, display equipment |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686395.9ACN107256692B (en) | 2017-08-11 | 2017-08-11 | Resolution update device, shift register, flexible display panels, display equipment |
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| CN107256692A CN107256692A (en) | 2017-10-17 |
| CN107256692Btrue CN107256692B (en) | 2019-08-02 |
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|---|---|---|---|
| CN201710686395.9AActiveCN107256692B (en) | 2017-08-11 | 2017-08-11 | Resolution update device, shift register, flexible display panels, display equipment |
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