技术领域technical field
本发明涉及显示技术领域，尤其涉及一种显示面板的充电方法、充电装置及显示装置。The present invention relates to the field of display technology, and in particular, to a charging method for a display panel, a charging device and a display device.
背景技术Background technique
目前，现有的有机电致发光显示面板(OLED，Organic Light Emitting Diode)的外部补偿算法中，通过给定预设数据电压，测量流经sense管的电流或者经过感应线senseline上进行电荷积累的感应电压，从而计算相应的数据来调节数据电压而达到补偿的效果。然而在对OLED显示面板进行外部补偿时，都需要对补偿电路中感应线sense line进行充电，而充电时间其实是有限的，当显示面板的尺寸较小时，充电时间比较充足，而随着显示面板的尺寸不断变大，充电时间会越来越不足。At present, in the external compensation algorithm of the existing organic electroluminescence display panel (OLED, Organic Light Emitting Diode), the current flowing through the sense tube is measured by a given preset data voltage, or the electric charge is accumulated on the sense line through the sense line. Induce the voltage, thereby calculating the corresponding data to adjust the data voltage to achieve the effect of compensation. However, when performing external compensation on the OLED display panel, it is necessary to charge the sense line in the compensation circuit, and the charging time is actually limited. When the size of the display panel is small, the charging time is sufficient. The size of the battery keeps getting bigger, and the charging time will be shorter and shorter.
目前补偿电路的sense方式是对一个像素单元中的一个子像素的像素开关(TFT，Thin Film Transistor)进行充电时，其他子像素的像素开关TFT则关闭，即目前的充电方法为在进行充电时，只有目标子像素的TFT打开进行充电，其他子像素关闭。而随着显示面板的尺寸变大，sense line逐渐充到目标值所需时间会随之变长，导致补偿时间变长，影响了补偿效果，进而影响了显示面板的显示效果，其已经成为大尺寸显示面板外部补偿的一个制约。The current sense method of the compensation circuit is that when the pixel switch (TFT, Thin Film Transistor) of one sub-pixel in a pixel unit is charged, the pixel switch TFTs of other sub-pixels are turned off, that is, the current charging method is when charging , only the TFT of the target sub-pixel is turned on for charging, and the other sub-pixels are turned off. As the size of the display panel becomes larger, the time required for the sense line to gradually charge to the target value will become longer, resulting in longer compensation time, affecting the compensation effect, which in turn affects the display effect of the display panel, which has become a large The size shows a constraint on the external compensation of the panel.
因此，如何提高大尺寸OLED显示面板外部补偿的充电效率，从而提高显示面板的显示效果，是本领域技术人员亟待解决的技术问题。Therefore, how to improve the charging efficiency of the external compensation of the large-size OLED display panel, so as to improve the display effect of the display panel, is a technical problem to be solved urgently by those skilled in the art.
发明内容SUMMARY OF THE INVENTION
本发明实施例提供了一种显示面板的充电方法、充电装置及显示装置，用以提高大尺寸电致发光显示面板外部补偿的充电效率，从而提高显示面板的显示效果。Embodiments of the present invention provide a charging method, a charging device and a display device for a display panel, which are used to improve the charging efficiency of external compensation of a large-size electroluminescent display panel, thereby improving the display effect of the display panel.
本发明实施例提供了一种显示面板的充电方法，所述显示面板包括：多个像素单元；每个所述像素单元包括多个子像素；每个所述像素单元对应一根用于感测像素开关的栅极电压的感应线；所述充电方法，包括：An embodiment of the present invention provides a charging method for a display panel, the display panel includes: a plurality of pixel units; each of the pixel units includes a plurality of sub-pixels; each of the pixel units corresponds to one pixel for sensing pixels A gate voltage sensing line of a switch; the charging method, comprising:
对所述像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个所述子像素对应一个用作所述像素开关的开关晶体管；simultaneously charging each sub-pixel in the pixel unit with a duration of a first charging time; wherein, each of the sub-pixels corresponds to a switch transistor used as the pixel switch;
在进行所述第一充电时间之后，仅对所述像素单元中的目标子像素进行不小于第二充电时间的充电。After the first charging time, only the target sub-pixels in the pixel unit are charged for not less than the second charging time.
在一种可能的实施方式中，本发明实施例提供的上述充电方法中，确定所述第一充电时间，包括：In a possible implementation manner, in the above charging method provided by the embodiment of the present invention, determining the first charging time includes:
对所述像素单元中的各子像素依次充电至饱和电压，并记录所述目标子像素中充电至饱和电压用时最长的时长为第一时长，记录所述目标子像素中充电至饱和时的最小饱和电压为第一电压；Charge each sub-pixel in the pixel unit to the saturation voltage in turn, and record the longest time duration in the target sub-pixel when it is charged to the saturation voltage as the first duration, and record the target sub-pixel when it is charged to saturation. The minimum saturation voltage is the first voltage;
根据所述第一电压确定第二电压；其中，所述第二电压小于所述第一电压；determining a second voltage according to the first voltage; wherein the second voltage is less than the first voltage;
对所述目标子像素充电至所述第二电压，并记录所述目标子像素中充电至所述第二电压用时最短的时长为所述第一充电时间。The target sub-pixel is charged to the second voltage, and the shortest time period for charging the target sub-pixel to the second voltage is recorded as the first charging time.
在一种可能的实施方式中，本发明实施例提供的上述充电方法中，所述第二电压通过如下计算式计算：In a possible implementation, in the above charging method provided by the embodiment of the present invention, the second voltage is calculated by the following formula:
V2＝kV1；V2=kV1;
其中，V2为所述第二电压，V1为所述第一电压，k的取值范围为0.75～0.95。Wherein, V2 is the second voltage, V1 is the first voltage, and the value of k ranges from 0.75 to 0.95.
在一种可能的实施方式中，本发明实施例提供的上述充电方法中，确定所述第二充电时间，包括：In a possible implementation manner, in the above charging method provided by the embodiment of the present invention, determining the second charging time includes:
对所述像素单元中的各子像素依次充电至所述第二电压，并记录所述目标子像素中充电至所述第二电压用时最短的时长为第二时长；charging each sub-pixel in the pixel unit to the second voltage in sequence, and recording the shortest duration of charging to the second voltage in the target sub-pixel as the second duration;
根据所述第一时长和所述第二时长确定所述第二充电时间。The second charging time is determined according to the first duration and the second duration.
在一种可能的实施方式中，本发明实施例提供的上述充电方法中，所述第二充电时间等于所述第一时长减去所述第二时长。In a possible implementation manner, in the above charging method provided by the embodiment of the present invention, the second charging time is equal to the first duration minus the second duration.
本发明实施例提供了一种显示面板的充电装置，所述显示面板包括：多个像素单元；每个所述像素单元包括多个子像素；每个所述像素单元对应一根用于感测像素开关的栅极电压的感应线；所述充电装置，包括：第一充电模块和第二充电模块；其中，An embodiment of the present invention provides a charging device for a display panel, the display panel includes: a plurality of pixel units; each of the pixel units includes a plurality of sub-pixels; each of the pixel units corresponds to one pixel for sensing pixels The induction line of the gate voltage of the switch; the charging device includes: a first charging module and a second charging module; wherein,
所述第一充电模块用于对所述像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个所述子像素对应一个用作所述像素开关的开关晶体管；The first charging module is used for simultaneously charging each sub-pixel in the pixel unit with a duration of a first charging time; wherein, each of the sub-pixels corresponds to a switching transistor used as the pixel switch;
所述第二充电模块用于在进行所述第一充电时间之后，仅对所述像素单元中的目标子像素进行不小于第二充电时间的充电。The second charging module is used for charging only the target sub-pixels in the pixel unit for a time not less than the second charging time after the first charging time.
在一种可能的实施方式中，本发明实施例提供的上述充电装置中，还包括：确定模块；所述确定模块确定所述第一充电时间，具体包括：In a possible implementation manner, the above-mentioned charging device provided by the embodiment of the present invention further includes: a determining module; the determining module determines the first charging time, and specifically includes:
对所述像素单元中的各子像素依次充电至饱和电压，并记录所述目标子像素中充电至饱和电压用时最长的时长为第一时长，记录所述目标子像素中充电至饱和时的最小饱和电压为第一电压；Charge each sub-pixel in the pixel unit to the saturation voltage in turn, and record the longest time duration in the target sub-pixel when it is charged to the saturation voltage as the first duration, and record the target sub-pixel when it is charged to saturation. The minimum saturation voltage is the first voltage;
根据所述第一电压确定第二电压；其中，所述第二电压小于所述第一电压；determining a second voltage according to the first voltage; wherein the second voltage is less than the first voltage;
对所述目标子像素充电至所述第二电压，并记录所述目标子像素中充电至所述第二电压用时最短的时长为所述第一充电时间。The target sub-pixel is charged to the second voltage, and the shortest time period for charging the target sub-pixel to the second voltage is recorded as the first charging time.
在一种可能的实施方式中，本发明实施例提供的上述充电装置中，所述第二电压通过如下计算式计算：In a possible implementation manner, in the above charging device provided by the embodiment of the present invention, the second voltage is calculated by the following formula:
V2＝kV1；V2=kV1;
其中，V2为所述第二电压，V1为所述第一电压，k的取值范围为0.75～0.95。Wherein, V2 is the second voltage, V1 is the first voltage, and the value of k ranges from 0.75 to 0.95.
在一种可能的实施方式中，本发明实施例提供的上述充电装置中，所述确定模块，还具体用于：In a possible implementation manner, in the above charging device provided by the embodiment of the present invention, the determining module is further specifically used for:
对所述像素单元中的各子像素依次充电至所述第二电压，并记录所述目标子像素中充电至所述第二电压用时最短的时长为第二时长；charging each sub-pixel in the pixel unit to the second voltage in sequence, and recording the shortest duration of charging to the second voltage in the target sub-pixel as the second duration;
根据所述第一时长和所述第二时长确定所述第二充电时间。The second charging time is determined according to the first duration and the second duration.
本发明实施例提供了一种显示装置，包括本发明实施例提供的上述充电装置。An embodiment of the present invention provides a display device, including the above-mentioned charging device provided by an embodiment of the present invention.
本发明实施例的有益效果包括：The beneficial effects of the embodiments of the present invention include:
本发明实施例提供了一种显示面板的充电方法、充电装置及显示装置，该充电方法包括：对像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个子像素对应一个用作像素开关的开关晶体管；在进行第一充电时间之后，仅对像素单元中的目标子像素进行不小于第二充电时间的充电。这样本发明的充电过程分两个阶段进行，即第一阶段将各子像素的TFT同时打开进行充电第一充电时间；第二阶段关闭其他子像素，保留目标子像素继续充电直到达到目标值，随着显示面板的尺寸变大，可以适当调整同时充电时间及第一充电时间，从而可以提高大尺寸显示面板的充电速率，降低显示面板的sense时间，提高补偿效率，进而提高显示面板的显示效果。Embodiments of the present invention provide a method for charging a display panel, a charging device, and a display device. The charging method includes: simultaneously charging each sub-pixel in a pixel unit for a first charging time; wherein each sub-pixel corresponds to one A switching transistor used as a pixel switch; after the first charging time, only the target sub-pixel in the pixel unit is charged for not less than the second charging time. In this way, the charging process of the present invention is carried out in two stages, that is, in the first stage, the TFTs of each sub-pixel are simultaneously turned on for the first charging time; in the second stage, other sub-pixels are turned off, and the target sub-pixel is retained to continue charging until the target value is reached, As the size of the display panel becomes larger, the simultaneous charging time and the first charging time can be appropriately adjusted, so that the charging rate of the large-size display panel can be increased, the sense time of the display panel can be reduced, the compensation efficiency can be improved, and the display effect of the display panel can be improved. .
附图说明Description of drawings
图1为本发明实施例提供的显示面板的充电方法流程图；FIG. 1 is a flowchart of a charging method for a display panel provided by an embodiment of the present invention;
图2为本发明实施例提供的显示面板的充电过程时序图；FIG. 2 is a timing diagram of a charging process of a display panel according to an embodiment of the present invention;
图3为本发明实施例提供的确定第一充电时间的方法流程图；3 is a flowchart of a method for determining a first charging time provided by an embodiment of the present invention;
图4为本发明实施例提供的确定第二充电时间的方法流程图；4 is a flowchart of a method for determining a second charging time provided by an embodiment of the present invention;
图5为本发明实施例提供的显示面板的充电装置的结构示意图。FIG. 5 is a schematic structural diagram of a charging device for a display panel according to an embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图，对本发明实施例提供的显示面板的充电方法、充电装置及显示装置的具体实施方式进行详细的说明。The specific implementations of the charging method, the charging device and the display device of the display panel provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
本发明实施例提供了一种显示面板的充电方法，显示面板包括：多个像素单元；每个像素单元包括多个子像素；每个像素单元对应一根用于感测像素开关的栅极电压的感应线；如图1所示，充电方法可以具体包括：An embodiment of the present invention provides a charging method for a display panel, the display panel includes: a plurality of pixel units; each pixel unit includes a plurality of sub-pixels; each pixel unit corresponds to a gate voltage for sensing a pixel switch Induction line; as shown in Figure 1, the charging method can specifically include:
S101、对像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个子像素对应一个用作像素开关的开关晶体管；S101, simultaneously charging each sub-pixel in the pixel unit with a duration of a first charging time; wherein, each sub-pixel corresponds to a switch transistor used as a pixel switch;
S102、在进行第一充电时间之后，仅对像素单元中的目标子像素进行不小于第二充电时间的充电。S102. After the first charging time, only the target sub-pixels in the pixel unit are charged for not less than the second charging time.
本发明实施例提供的上述充电方法中，以像素单元包括RGBW四个子像素为例进行说明。需要指出的是，本申请并不限定像素单元的结构，已有的任何子像素排列均可应用所公开的充电方法，，例如RGB、白色子像素+彩膜(W+CF)、Pentile等。In the above charging method provided by the embodiment of the present invention, the pixel unit includes four RGBW sub-pixels as an example for description. It should be pointed out that the present application does not limit the structure of the pixel unit, and the disclosed charging method can be applied to any existing sub-pixel arrangement, such as RGB, white sub-pixel + color filter (W+CF), Pentile, etc.
本发明实施例提供的上述充电方法中，其典型适用的显示面板是OLED，然而其它类型的基于电致发光EL的显示面板均可适用本申请的技术方案。In the above charging method provided by the embodiment of the present invention, the typical applicable display panel is OLED, but other types of display panels based on electroluminescence EL can be applicable to the technical solutions of the present application.
如图2所示，显示面板上栅线GATE输入扫描信号后开始充电，充电过程分两个阶段进行，即第一阶段t1将各子像素的TFT同时打开进行充电第一充电时间，通过感应线senseline可以获得此时各子像素充电至饱和电压Vs2；第二阶段t2关闭其他子像素，保留目标子像素例如R子像素继续充电直到达到目标值饱和电压Vs1，随着显示面板的尺寸变大，可以适当调整同时充电时间及第一充电时间，从而可以提高大尺寸显示面板的充电速率，降低显示面板的sense时间，提高补偿效率，进而提高显示面板的显示效果。As shown in Figure 2, the gate line GATE on the display panel starts charging after inputting the scanning signal. The charging process is carried out in two stages, that is, in the first stage t1, the TFTs of each sub-pixel are turned on at the same time for charging. For the first charging time, through the induction line The senseline can obtain that each sub-pixel is charged to the saturation voltage Vs2 at this time; in the second stage t2, other sub-pixels are turned off, and the target sub-pixel such as the R sub-pixel is retained to continue charging until the target value saturation voltage Vs1 is reached. As the size of the display panel becomes larger, The simultaneous charging time and the first charging time can be appropriately adjusted, thereby increasing the charging rate of the large-size display panel, reducing the sense time of the display panel, improving the compensation efficiency, and further improving the display effect of the display panel.
在具体实施时，本发明实施例提供的上述充电方法中，还可以包括：确定第一充电时间和第二充电时间。具体地，为了提高大尺寸显示面板的充电效率，在进行快速充电之前还需要确定第一充电时间和第二充电时间，即确定像素单元中各子像素同时充电的快速充电时间(对应第一充电时间)，以及仅对目标子像素充电的补偿充电时间(对应第二充电时间)，从而显示面板提高充电效率，降低sense时间。During specific implementation, the above charging method provided by the embodiment of the present invention may further include: determining a first charging time and a second charging time. Specifically, in order to improve the charging efficiency of the large-size display panel, it is necessary to determine the first charging time and the second charging time before performing the fast charging, that is, to determine the fast charging time (corresponding to the first charging time) during which each sub-pixel in the pixel unit is simultaneously charged. time), and the compensation charging time (corresponding to the second charging time) for only charging the target sub-pixel, so that the display panel improves the charging efficiency and reduces the sense time.
在具体实施时，本发明实施例提供的上述充电方法中，如图3所示，确定第一充电时间可以包括：During specific implementation, in the above charging method provided by the embodiment of the present invention, as shown in FIG. 3 , determining the first charging time may include:
S201、对像素单元中的各子像素依次充电至饱和电压，并记录目标子像素中充电至饱和电压用时最长的时长为第一时长，记录目标子像素中充电至饱和时的最小饱和电压为第一电压；S201. Charge each sub-pixel in the pixel unit to the saturation voltage in turn, and record the longest time duration in the target sub-pixel when charging to the saturation voltage as the first duration, and record the minimum saturation voltage in the target sub-pixel when charging to the saturation voltage as the first voltage;
S202、根据第一电压确定第二电压；其中，第二电压小于第一电压；S202. Determine a second voltage according to the first voltage; wherein, the second voltage is smaller than the first voltage;
S203、对目标子像素充电至第二电压，并记录目标子像素中充电至第二电压用时最短的时长为第一充电时间。S203 , charging the target sub-pixel to the second voltage, and recording the shortest duration of charging to the second voltage in the target sub-pixel as the first charging time.
具体地，本发明实施例提供的上述充电方法中，通过对像素单元中各子像素进行依次充电，记录最长时间和最小饱和电压，从而确定小于第一电压的第二电压，记录目标子像素充电至第二电压的最短时间为第一充电时间，这样可以防止过充。其中，第二电压可以通过如下计算式计算：Specifically, in the above charging method provided by the embodiment of the present invention, by sequentially charging each sub-pixel in the pixel unit, recording the longest time and the minimum saturation voltage, thereby determining a second voltage smaller than the first voltage, and recording the target sub-pixel The shortest time for charging to the second voltage is the first charging time, which can prevent overcharging. Wherein, the second voltage can be calculated by the following formula:
V2＝kV1；V2=kV1;
其中，V2为第二电压，V1为第一电压，k的取值范围为0.75～0.95。Wherein, V2 is the second voltage, V1 is the first voltage, and the value of k ranges from 0.75 to 0.95.
在具体实施时，本发明实施例提供的上述充电方法中，如图4所示，确定第二充电时间可以包括：During specific implementation, in the above charging method provided by the embodiment of the present invention, as shown in FIG. 4 , determining the second charging time may include:
S301、对像素单元中的各子像素依次充电至第二电压，并记录目标子像素中充电至第二电压用时最短的时长为第二时长；S301. Charge each sub-pixel in the pixel unit to the second voltage in sequence, and record the shortest duration of charging to the second voltage in the target sub-pixel as the second duration;
S302、根据第一时长和第二时长确定第二充电时间。S302. Determine a second charging time according to the first duration and the second duration.
具体地，本发明实施例提供的上述充电方法中，通过对像素单元中各子像素依次充电至第二电压，选取目标子像素充电至第二电压的最小时间为第二时长，根据第一时长和第二时长确定第二充电时间即补充充电时间，即第二充电时间等于第一时长减去第二时长，这样可以确保目标子像素均能充电至饱和。Specifically, in the above charging method provided by the embodiment of the present invention, by sequentially charging each sub-pixel in the pixel unit to the second voltage, the minimum time for charging the target sub-pixel to the second voltage is selected as the second duration, and according to the first duration and the second duration to determine the second charging time, that is, the supplementary charging time, that is, the second charging time is equal to the first duration minus the second duration, which can ensure that the target sub-pixels can be charged to saturation.
基于同一发明构思，本发明实施例提供了一种显示面板的充电装置，显示面板包括：多个像素单元；每个像素单元包括多个子像素；每个像素单元对应一根用于感测像素开关的栅极电压的感应线；所述充电装置，如图5所示，可以包括：第一充电模块01和第二充电模块02；其中，Based on the same inventive concept, an embodiment of the present invention provides a charging device for a display panel, the display panel includes: a plurality of pixel units; each pixel unit includes a plurality of sub-pixels; each pixel unit corresponds to a sensor for a pixel switch The induction line of the gate voltage; the charging device, as shown in FIG. 5 , may include: a first charging module 01 and a second charging module 02; wherein,
第一充电模块01用于对像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个子像素对应一个用作像素开关的开关晶体管；The first charging module 01 is used to simultaneously charge each sub-pixel in the pixel unit for a first charging time; wherein, each sub-pixel corresponds to a switch transistor used as a pixel switch;
第二充电模块02用于在进行第一充电时间之后，仅对像素单元中的目标子像素进行不小于第二充电时间的充电。The second charging module 02 is used for charging only the target sub-pixels in the pixel unit for not less than the second charging time after the first charging time.
本发明实施例提供的上述充电装置中，将充电过程分两个阶段进行，通过第一充电模块在第一阶段将各子像素的TFT同时打开进行充电第一充电时间；通过第二充电模块在第二阶段关闭其他子像素，保留目标子像素继续充电直到达到目标值。随着显示面板的尺寸变大，可以适当调整同时充电时间及第一充电时间，从而可以提高大尺寸显示面板的充电速率，降低显示面板的sense时间，提高补偿效率，进而提高显示面板的显示效果。In the above charging device provided by the embodiment of the present invention, the charging process is carried out in two stages, and the TFTs of each sub-pixel are simultaneously turned on by the first charging module in the first stage to perform charging for the first charging time; In the second stage, other sub-pixels are turned off, and the target sub-pixel is reserved and continues to charge until the target value is reached. As the size of the display panel becomes larger, the simultaneous charging time and the first charging time can be appropriately adjusted, so that the charging rate of the large-size display panel can be increased, the sense time of the display panel can be reduced, the compensation efficiency can be improved, and the display effect of the display panel can be improved. .
在具体实施时，本发明实施例提供的上述充电装置中，如图5所示，还可以包括：确定模块03；确定模块03用于确定第一充电时间和第二充电时间。具体地，为了提高大尺寸显示面板的充电效率，在进行快速充电之前还可以通过确定模块确定第一充电时间和第二充电时间，即通过确定模块确定像素单元中各子像素同时充电的快速充电时间(对应第一充电时间)，以及仅对目标子像素充电的补偿充电时间(对应第二充电时间)，从而显示面板提高充电效率，降低sense时间。During specific implementation, the above-mentioned charging device provided in the embodiment of the present invention, as shown in FIG. 5 , may further include: a determination module 03 ; the determination module 03 is used to determine the first charging time and the second charging time. Specifically, in order to improve the charging efficiency of the large-size display panel, the first charging time and the second charging time can also be determined by the determining module before the fast charging, that is, the determining module is used to determine the fast charging in which the sub-pixels in the pixel unit are simultaneously charged time (corresponding to the first charging time), and a compensation charging time (corresponding to the second charging time) for charging only the target sub-pixel, so that the display panel improves the charging efficiency and reduces the sense time.
在具体实施时，本发明实施例提供的上述充电装置中，确定模块具体用于：During specific implementation, in the above charging device provided by the embodiment of the present invention, the determining module is specifically used for:
对像素单元中的各子像素依次充电至饱和电压，并记录目标子像素中充电至饱和电压用时最长的时长为第一时长，记录目标子像素中充电至饱和时的最小饱和电压为第一电压；The sub-pixels in the pixel unit are charged to the saturation voltage in turn, and the longest duration of charging to the saturation voltage in the target sub-pixel is recorded as the first duration, and the minimum saturation voltage when the target sub-pixel is charged to saturation is recorded as the first duration. Voltage;
根据第一电压确定第二电压；其中，第二电压小于第一电压；determining the second voltage according to the first voltage; wherein the second voltage is less than the first voltage;
对目标子像素充电至第二电压，并记录目标子像素中充电至第二电压用时最短的时长为第一充电时间。The target sub-pixel is charged to the second voltage, and the shortest duration of charging the target sub-pixel to the second voltage is recorded as the first charging time.
具体地，本发明实施例提供的上述充电装置中，确定模块通过对像素单元中各子像素进行依次充电，记录最长时间和最小饱和电压，从而确定小于第一电压的第二电压，记录目标子像素充电至第二电压的最短时间为第一充电时间，这样可以防止过充。其中，第二电压通过如下计算式计算：Specifically, in the above-mentioned charging device provided by the embodiment of the present invention, the determination module sequentially charges each sub-pixel in the pixel unit, records the longest time and the minimum saturation voltage, thereby determines the second voltage less than the first voltage, and records the target The shortest time for the sub-pixel to be charged to the second voltage is the first charging time, which can prevent overcharging. Wherein, the second voltage is calculated by the following formula:
V2＝kV1；V2=kV1;
其中，V2为第二电压，V1为第一电压，k的取值范围为0.75～0.95。Wherein, V2 is the second voltage, V1 is the first voltage, and the value of k ranges from 0.75 to 0.95.
在具体实施时，本发明实施例提供的上述充电装置中，确定模块还可以具体用于：During specific implementation, in the above charging device provided by the embodiment of the present invention, the determining module may also be specifically used for:
对像素单元中的各子像素依次充电至第二电压，并记录目标子像素中充电至第二电压用时最短的时长为第二时长；The sub-pixels in the pixel unit are charged to the second voltage in sequence, and the shortest time duration for charging to the second voltage in the target sub-pixel is recorded as the second duration;
根据第一时长和第二时长确定第二充电时间。The second charging time is determined according to the first duration and the second duration.
具体地，本发明实施例提供的上述充电装置中，确定模块通过对像素单元中各子像素依次充电至第二电压，选取目标子像素充电至第二电压的最小时间为第二时长，根据第一时长和第二时长确定第二充电时间即补充充电时间，即第二充电时间等于第一时长减去第二时长，这样可以确保目标子像素均能充电至饱和。Specifically, in the above-mentioned charging device provided by the embodiment of the present invention, the determining module sequentially charges each sub-pixel in the pixel unit to the second voltage, and selects the minimum time for charging the target sub-pixel to the second voltage as the second duration, according to the first The first duration and the second duration determine the second charging time, that is, the supplementary charging time, that is, the second charging time is equal to the first duration minus the second duration, which can ensure that the target sub-pixels can be charged to saturation.
基于同一发明构思，本发明实施例提供了一种显示装置，包括本发明实施例提供的上述充电装置。该显示装置可以应用于手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。由于该显示装置解决问题的原理与充电装置相似，因此该显示装置的实施可以参见上述充电装置的实施，重复之处不再赘述。Based on the same inventive concept, an embodiment of the present invention provides a display device, including the above-mentioned charging device provided by the embodiment of the present invention. The display device can be applied to any product or component with a display function, such as a mobile phone, a tablet computer, a TV, a monitor, a notebook computer, a digital photo frame, and a navigator. Since the principle of solving the problem of the display device is similar to that of the charging device, the implementation of the display device can refer to the implementation of the above-mentioned charging device, and the repetition will not be repeated.
本发明实施例提供了一种显示面板的充电方法、充电装置及显示装置，该充电方法包括：对像素单元中各子像素同时进行时长为第一充电时间的充电；其中，每个子像素对应一个用作像素开关的开关晶体管；在进行第一充电时间之后，仅对像素单元中的目标子像素进行不小于第二充电时间的充电。这样本发明的充电过程分两个阶段进行，即第一阶段将各子像素的TFT同时打开进行充电第一充电时间；第二阶段关闭其他子像素，保留目标子像素继续充电直到达到目标值，随着显示面板的尺寸变大，可以适当调整同时充电时间及第一充电时间，从而可以提高大尺寸显示面板的充电速率，降低显示面板的sense时间，提高补偿效率，进而提高显示面板的显示效果。Embodiments of the present invention provide a method for charging a display panel, a charging device, and a display device. The charging method includes: simultaneously charging each sub-pixel in a pixel unit for a first charging time; wherein each sub-pixel corresponds to one A switching transistor used as a pixel switch; after the first charging time, only the target sub-pixel in the pixel unit is charged for not less than the second charging time. In this way, the charging process of the present invention is carried out in two stages, that is, in the first stage, the TFTs of each sub-pixel are simultaneously turned on for the first charging time; in the second stage, other sub-pixels are turned off, and the target sub-pixel is retained to continue charging until the target value is reached, As the size of the display panel becomes larger, the simultaneous charging time and the first charging time can be appropriately adjusted, so that the charging rate of the large-size display panel can be increased, the sense time of the display panel can be reduced, the compensation efficiency can be improved, and the display effect of the display panel can be improved. .
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
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| CN201710309335.5ACN107103876B (en) | 2017-05-04 | 2017-05-04 | A kind of charging method of display panel, charging unit and display device |
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