WO2020061817A1 - 显示驱动方法及显示装置 - Google Patents

显示驱动方法及显示装置 Download PDF

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Publication number
WO2020061817A1
WO2020061817A1 PCT/CN2018/107617 CN2018107617W WO2020061817A1 WO 2020061817 A1 WO2020061817 A1 WO 2020061817A1 CN 2018107617 W CN2018107617 W CN 2018107617W WO 2020061817 A1 WO2020061817 A1 WO 2020061817A1
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Prior art keywords
voltage
channels
target frame
frame picture
driver
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PCT/CN2018/107617
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English (en)
French (fr)
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郭星灵
张肖
周锦杰
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深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201880094118.1A priority Critical patent/CN112602148B/zh
Priority to PCT/CN2018/107617 priority patent/WO2020061817A1/zh
Publication of WO2020061817A1 publication Critical patent/WO2020061817A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]

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  • the present invention relates to the technical field of display driving, in particular to a display driving method and a display device.
  • FIG. 1 is a transmission method of a driving voltage (Electroluminescent Voltage Device, ELVDD) of an existing organic light-emitting diode (OLED) display device.
  • ELVDD Electric Voltage Device
  • the ELVDD is generated by the power driver 5 (Power IC) and then divided into multiple channels in parallel outside the plane.
  • the power driver 5 transmits from the near to the far along the direction in which the power line 6 is arranged. 7
  • the data voltage Vdata corresponding to the image data transmitted drives the organic light emitting diode to emit light to perform image display.
  • an embodiment of the present invention discloses a display device capable of improving display effect and a display driving method thereof.
  • a display driving method for a display device includes the following steps:
  • the driving voltage is output to a display panel according to the adjusted number of channels, and the gray-scale voltage and the driving voltage are used to drive the display panel to display the target frame picture.
  • a display device includes a display panel, a first driver, and a second driver.
  • the first driver is configured to obtain gray-scale voltage information of each pixel in a target frame picture and feed it back to the second driver.
  • the driver is used to control and adjust the number of channels for transmitting the driving voltage according to the grayscale voltage information of each pixel in the target frame picture, and the number of channels represents the driving voltage input impedance; the second driver adjusts the number of channels after the adjustment
  • the driving voltage is output to the display panel, and the gray-scale voltage provided by the first driver and the driving voltage provided by the second driver cooperate to drive the display panel to display the target frame picture.
  • the transmission mode of the driving voltage is adjusted according to the gray-scale voltage information, which effectively ensures the accuracy of the picture transmission and also ensures the consistency of the voltage drop generated by the external circuit of the display panel when transmitting different pictures. And improve the display effect.
  • FIG. 1 is a schematic block diagram of a conventional OLED display device.
  • FIG. 2 is a schematic diagram of a display device according to an embodiment of the present invention.
  • FIG. 3 is a grayscale voltage information distribution diagram of each pixel in a target frame obtained by a first driver and a target frame.
  • FIG. 4 is a structural block diagram of an output voltage control circuit.
  • FIG. 5 is a distribution diagram of gain values corresponding to grayscale voltages.
  • FIG. 6 is a schematic diagram of a transmission mode of a driving voltage.
  • FIG. 7 is a flowchart of a display driving method of a display device according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of step 102 shown in FIG. 7.
  • an embodiment of the present invention provides a display device 100.
  • the display device 100 includes a display panel 10, a first driver 20, and a second driver 40. Both the first driver 20 and the second driver 40 are electrically connected to the display panel 10 to drive the display panel 10 to display a picture.
  • the first driver 20 is disposed on the circuit board 60.
  • the second driver 40 is electrically connected to the display panel 10 and the first driver 20 through the circuit board 60.
  • the circuit board 60 is a flexible circuit board.
  • the display panel 10 includes a display area 11 and a non-display area 13 provided around the display area 11.
  • the display panel 10 includes a plurality of pixels (not shown) arranged in an array in the display area 11.
  • the first driver 20 is a data driver.
  • the first driver 20 is disposed in the non-display area 13 of the display panel 10. It can be understood that, in other embodiments, the first driver 20 may not be disposed on the display panel 10.
  • the first driver 20 is configured to obtain gray-scale voltage information of each pixel in a target frame and feed the gray-scale voltage information to the second driver 40. Please refer to FIG. 3, which is a grayscale voltage information distribution diagram of each pixel in a target frame picture.
  • the second driver 40 is used to provide a driving voltage (Electroluminescent Voltage Device, ELVDD) to the display panel 10 to drive the display panel 10 for display.
  • the second driver 40 includes an output voltage control circuit 41 for controlling and adjusting the number of channels for transmitting the driving voltage according to the grayscale voltage information of each pixel in the target frame picture.
  • the number of channels characterizes an input impedance transmitting the driving voltage. The greater the number of channels, the greater the number of resistors connected in parallel, which reduces the input impedance for transmitting the driving voltage. The smaller the number of channels, the less the number of parallel resistors, which increases the transmission of the driving voltage. Input impedance.
  • the output voltage control circuit 41 includes a processing module 411 and a control module 413.
  • the processing module 411 is configured to calculate a target gain value of the target frame picture according to the grayscale voltage information of each pixel in the target frame picture.
  • FIG. 5 is a distribution diagram of the gain value corresponding to the grayscale voltage.
  • Gray level voltage (Gray) is recorded as gray level voltage 0, gray level voltage 1, gray level voltage 2 ... gray level voltage 255, where the gain value (Gain, G) of gray level voltage 0 is 0
  • the gain value of the grayscale voltage 128 is 1, and the gain value of the grayscale voltage 255 is 2.
  • the grayscale voltage of one pixel is n
  • the gain value G of the grayscale voltage n is 2n / 255, where 1 ⁇ n ⁇ 255.
  • the gain values corresponding to the grayscale voltages of the pixels of the target frame picture are summed and an average gain value is calculated, and the average gain value is the target gain value G1 of the target frame picture.
  • the magnitude of the average gain value may reflect the magnitude of the current value of the target frame picture. For a target frame picture with a larger average gain value, the corresponding target frame picture current value is larger; for a target frame picture with a smaller average gain value, the corresponding target frame picture current value is smaller.
  • a first end of the circuit board 60 is fixed to the display panel 10, the first driver 20 is fixed to the first end of the circuit board 60, a second end of the circuit board 60 and the second driver 40 Electrical connection.
  • FIG. 6 is a schematic diagram of transmission of driving voltage in this embodiment.
  • six channels for transmitting driving voltage are correspondingly provided.
  • the larger the corresponding current value the greater the number of channels after adjustment; for a target frame picture with a smaller average gain value, the corresponding current value is smaller, the The smaller the number of channels.
  • the control module 413 also outputs the driving voltage to the display panel 10 according to the adjusted number of channels, thereby driving the display panel 10 to display the target frame picture.
  • the first driver 20 obtains the grayscale voltage information of each pixel in the target frame picture and feeds back the grayscale voltage information to the second driver 40.
  • the second driver 40 controls and adjusts the number of channels for transmitting the driving voltage according to the gray-scale voltage information of each pixel in the target frame picture.
  • the second driver 40 outputs the driving voltage to the display panel 10 by adjusting the number of channels CH1.
  • the gray-scale voltage provided by the first driver 20 and the driving voltage provided by the second driver 40 cooperate to drive the display.
  • the panel 10 displays the target frame picture.
  • the larger the average gain value of the target frame picture is the lower the number of channels of the driving voltage is after adjustment, that is, the number of parallel connections of the resistance is reduced, so that the impedance can be increased and the voltage drop can be increased.
  • the gray-scale voltage information of the target frame picture the number of channels of the driving voltage can be flexibly adjusted, which effectively ensures the consistency of the voltage drop when displaying different pictures.
  • an embodiment of the present invention further provides a display driving method, including the following steps:
  • Step 101 Obtain grayscale voltage information of each pixel in a target frame picture.
  • Step 102 Control and adjust the number of channels for transmitting the driving voltage according to the grayscale voltage information of each pixel in the target frame picture.
  • the number of channels characterizes an input impedance transmitting the driving voltage.
  • step 102 specifically includes the following steps:
  • step 1021 a target gain value of the target frame picture is calculated and obtained according to the grayscale voltage information.
  • Gray level voltage is recorded as gray level voltage 0, gray level voltage 1, gray level voltage 2 ... gray level voltage 255, where the gain value (Gain, G) of gray level voltage 0 is 0
  • the gain value of the grayscale voltage 128 is 1, and the gain value of the grayscale voltage 255 is 2.
  • the magnitude of the gain value can reflect the magnitude of the current value of the target frame picture.
  • the grayscale voltage of one pixel is n
  • the gain value G of the grayscale voltage n is 2n / 255, where 1 ⁇ n ⁇ 255.
  • the larger n is, the larger the gain value corresponding to the grayscale voltage n is. Understandably, the gain value can be set as required.
  • Step 1022 Control and adjust the number of channels transmitting the driving voltage according to the target gain value.
  • the initial number of channels of the driving voltage be CH0 and let the adjusted number of channels be CH1.
  • the adjustment The number of rear channels CH1 is also smaller.
  • step 103 the driving voltage is output to the display panel according to the adjusted channel number, and the gray-scale voltage and the driving voltage are used to drive the display panel to display the target frame picture.
  • the number of channels of the driving voltage is adjusted according to the gray-scale voltage information, which effectively guarantees the accuracy of the picture transmission and also ensures the voltage drop generated by the external circuit of the display panel 10 when transmitting different pictures. consistency. Because the driving voltage has the same IR drop at each gray level, the driving voltage of the organic light-emitting end of the display panel is consistent, that is, the source voltage (Vs) is the same, thereby ensuring the accurate display of monochrome images and improving Display effect. In addition, because the consistency of the driving voltage is ensured, when the gamma (Gamma) debugging operation is performed on the display panel, the magnitude of the voltage drop is unchanged, and the screen display does not show deviation.
  • the gamma (Gamma) debugging operation is performed on the display panel, the magnitude of the voltage drop is unchanged, and the screen display does not show deviation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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Abstract

一种显示驱动方法及显示装置，驱动方法包括以下步骤：获取一目标帧画面中的各像素的灰阶电压信息（101）；依据目标帧画面中的各像素的灰阶电压信息，控制调整传输驱动电压的通道数，通道数表征传输驱动电压的输入阻抗（102）；及依据调整后通道数将驱动电压输出至显示面板，灰阶电压与驱动电压配合驱动显示面板显示目标帧画面（102）。依据灰阶电压信息调整驱动电压的传输通道数，有效保证画面传输的准确性并提高了显示效果。

Description

显示驱动方法及显示装置 技术领域
本发明涉及显示驱动技术领域，特别涉及一种显示驱动方法及显示装置。
背景技术
请参阅图1所示，为现有一种有机发光二极管(Organic Light-Emitting Diode，OLED)显示装置的驱动电压(Electroluminescent Voltage Device，ELVDD)的传输方式。ELVDD由电源驱动器5(Power IC)产生电压之后在面外分为多路并联，由电源驱动器5沿着布置有电源线6的方向由近向远传输，然后所述驱动电压ELVDD配合由数据线7传输的对应图像数据的数据电压Vdata驱动有机发光二极管进行发光，以执行图像显示。
但是，这样的驱动架构的方式在实际工作过程中，会存在一种亮度不均的现象，特别是邻近所述电源驱动器5的显示区域的亮度高于远离电源驱动器5的显示区域的亮度，从而导致显示面板显示的图像效果不佳，影响用户的视觉体验。
发明内容
为解决上述问题，本发明实施例公开一种能够提高显示效果的显示装置及其显示驱动方法。
一种显示装置的显示驱动方法，包括以下步骤：
获取一目标帧画面中的各像素的灰阶电压信息；
依据所述目标帧画面中的各像素的灰阶电压信息，控制调整传输驱动电压的通道数，所述通道数表征传输所述驱动电压的输入阻抗；及
依据调整后通道数将所述驱动电压输出至显示面板，所述灰阶电压与所述驱动电压配合驱动所述显示面板显示所述目标帧画面。
一种显示装置，包括显示面板、第一驱动器及第二驱动器，所述第一驱动器用于获取目标帧画面中的各像素的灰阶电压信息并反馈到所述第二驱动器，所述第二驱动器用于依据所述目标帧画面中的各像素的灰阶电压信息控制调 整传输驱动电压的通道数，所述通道数表征所述驱动电压输入阻抗；所述第二驱动器通过调整后通道数将所述驱动电压输出至所述显示面板，所述第一驱动器提供的灰阶电压与所述第二驱动器提供的驱动电压配合驱动所述显示面板显示所述目标帧画面。
本发明实施方式提供的显示装置及显示驱动方法，依据灰阶电压信息调整驱动电压的传输模式，有效保证画面传输的准确性，亦保证了传输不同画面时显示面板外部电路产生的压降的一致性，提高了显示效果。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有的一种OLED显示装置的示意框图。
图2为本发明实施方式提供的显示装置的示意图。
图3为第一驱动器及其获取的一目标帧画面中的各像素的灰阶电压信息分布图。
图4为输出电压控制电路的结构框图。
图5为灰阶电压对应的增益值分布图。
图6为驱动电压的一传输模式的示意图。
图7为本发明实施方式提供的一种显示装置的显示驱动方法的流程图。
图8为图7所示步骤102的流程图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性 劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图2，本发明实施方式提供一种显示装置100。显示装置100包括显示面板10、第一驱动器20及第二驱动器40。第一驱动器20与第二驱动器40均与所述显示面板10电性连接以驱动所述显示面板10显示画面。第一驱动器20设于电路板60。第二驱动器40通过电路板60与显示面板10及第一驱动器20电性相接。本实施方式中，电路板60为柔性线路板。
显示面板10包括显示区11及绕显示区11设置的非显示区13。显示面板10在显示区11设置呈阵列排列的多个像素(图未示)。
本实施方式中，第一驱动器20为数据驱动器。第一驱动器20设于显示面板10的非显示区13。可以理解，在其他实施例中，第一驱动器20也可以不设于显示面板10上。第一驱动器20用于获取一目标帧画面中的各像素的灰阶电压信息并将该灰阶电压信息反馈给第二驱动器40。请参阅图3，为一目标帧画面中的各像素的灰阶电压信息分布图。第二驱动器40用于给显示面板10提供驱动电压(Electroluminescent Voltage Device，ELVDD)以驱动显示面板10进行显示。第二驱动器40包括输出电压控制电路41，用于依据所述目标帧画面中的各像素的灰阶电压信息控制调整传输驱动电压的通道数。所述通道数表征传输所述驱动电压的输入阻抗。通道数越多，相当于并联的电阻数越多，即减小了传输所述驱动电压的输入阻抗；通道数越少，相当于并联的电阻数越少，即增大了传输所述驱动电压的输入阻抗。
请参阅图4，输出电压控制电路41包括处理模块411及控制模块413。
处理模块411用于依据所述目标帧画面中的各像素的灰阶电压信息计算得到所述目标帧画面的目标增益值。
请参阅图5，为灰阶电压对应的增益值分布图。灰阶电压(Gray)依次记为灰阶电压0、灰阶电压1、灰阶电压2......灰阶电压255，其中，灰阶电压0的增益值(Gain，G)为0，灰阶电压128的增益值为1，设灰阶电压255的增益值为2。
本实施方式中，设其中一个像素的灰阶电压为n，灰阶电压n的增益值G为2n/255，其中1≤n≤255。将所述目标帧画面各像素的灰阶电压对应的增益值进行求和并计算平均增益值，所述平均增益值即为所述目标帧画面的目标增 益值G1。n越大，灰阶电压n对应的增益值越大。可以理解，增益值可以依据需要进行设定。平均增益值的大小可以反映出所述目标帧画面的电流值大小。对于平均增益值越大的目标帧画面，其对应的目标帧画面电流值越大；对于平均增益值越小的目标帧画面，其对应的目标帧画面电流值越小。
控制模块413依据所述目标增益值控制调整传输驱动电压的通道数。设驱动电压的初始通道数(channel)为CH0，设调整后的通道数为CH1。控制模块413将所述驱动电压的初始通道数CH0与所述目标增益值G1相乘，得到所述调整后通道数CH1，CH1＝CH0×G1。
电路板60的第一端固定于所述显示面板10上，所述第一驱动器20固定于所述电路板60的第一端，所述电路板60的第二端与所述第二驱动器40电性连接。
请参阅图6，为本实施方式中驱动电压的一传输示意图，图6中对应设置6个传输驱动电压的通道。
对于平均增益值越大的目标帧画面，其对应的电流值越大，则调整后通道数也越大；对于平均增益值越小的目标帧画面，其对应的电流值越小，则调整后通道数也越小。
控制模块413还依据所述调整后通道数将所述驱动电压输出至显示面板10，从而驱动所述显示面板10显示所述目标帧画面。
在需显示一目标帧画面时，第一驱动器20获取所述目标帧画面中的各像素的灰阶电压信息并将该等灰阶电压信息反馈给第二驱动器40。第二驱动器40依据所述目标帧画面中的各像素的灰阶电压信息控制调整传输驱动电压的通道数。第二驱动器40通过调整后通道数CH1将所述驱动电压输出至所述显示面板10，所述第一驱动器20提供的灰阶电压与所述第二驱动器40提供的驱动电压配合驱动所述显示面板10显示所述目标帧画面。
所述目标帧画面的平均增益值越大，驱动电压的通道数经调整后增加，即增加了电阻的并联数目，从而能够减小阻抗，减小压降。反之，所述目标帧画面的平均增益值越大，驱动电压的通道数经调整后减少，即减少了电阻的并联数目，从而能够增加阻抗，增大压降。依据目标帧画面的灰阶电压信息，灵活调整驱动电压的通道数，有效地保证了显示不同画面时压降的一致性。
请参阅图7，本发明实施方式还提供一种显示驱动方法，包括以下步骤：
步骤101，获取一目标帧画面中的各像素的灰阶电压信息。
步骤102，依据所述目标帧画面中的各像素的灰阶电压信息，控制调整传输驱动电压的通道数。所述通道数表征传输所述驱动电压的输入阻抗。
本实施方式中，请参阅图8，步骤102具体包括以下步骤：
步骤1021，依据所述灰阶电压信息计算得到所述目标帧画面的目标增益值。
灰阶电压(Gray)依次记为灰阶电压0、灰阶电压1、灰阶电压2......灰阶电压255，其中，灰阶电压0的增益值(Gain，G)为0，灰阶电压128的增益值为1，设灰阶电压255的增益值为2。增益值的大小就可以反映出所述目标帧画面的电流值大小。本实施方式中，设其中一个像素的灰阶电压为n，灰阶电压n的增益值G为2n/255，其中1≤n≤255。将所述目标帧画面各像素的增益值进行求和并计算平均值，所述平均值即为所述目标帧画面的目标增益值G1。n越大，灰阶电压n对应的增益值越大。可以理解，增益值可以依据需要进行设定。
步骤1022，依据所述目标增益值控制调整传输所述驱动电压的通道数。
设所述驱动电压的初始通道数(channel)为CH0，设调整后的调整后通道数为CH1。CH1将所述驱动电压的初始通道数CH0与所述目标增益值G1相乘，得到所述调整后通道数CH1，CH1＝CH0×G1。对平均增益值越大的目标帧画面，其对应的电流值越大，则调整后通道数CH1也越大；对平均增益值越小的目标帧画面，其对应的电流值越小，则调整后通道数CH1也越小。
步骤103，依据调整后通道数将所述驱动电压输出至显示面板，所述灰阶电压与所述驱动电压配合驱动所述显示面板显示所述目标帧画面。
本发明实施方式提供的显示装置及显示驱动方法，依据灰阶电压信息调整驱动电压的通道数，有效保证画面传输的准确性，亦保证了传输不同画面时显示面板10外部电路产生的压降的一致性。由于驱动电压在各灰阶有同样的压降(IR drop)，保证了显示面板的有机发光端驱动电压的一致，即源极电压(Vs)一致，从而保证了单色画面的准确显示，提高了显示效果。另外，由于保证了驱动电压的一致性，在对显示面板进行伽马(Gamma)调试操作时，压降大小不变，画面显示不会出现偏差。
以上所述是本发明的优选实施例，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (11)

  1. 一种显示装置的显示驱动方法，其特征在于，包括以下步骤：
    获取一目标帧画面中的各像素的灰阶电压信息；
    依据所述目标帧画面中的各像素的灰阶电压信息，控制调整传输驱动电压的通道数，所述通道数表征传输所述驱动电压的输入阻抗；及
    依据调整后通道数将所述驱动电压输出至显示面板，所述灰阶电压与所述驱动电压配合驱动所述显示面板显示所述目标帧画面。
  2. 如权利要求1所述的显示装置的显示驱动方法，其特征在于，所述依据所述目标帧画面中的各像素的灰阶电压信息控制调整传输驱动电压的通道数，所述通道数表征所述驱动电压输入阻抗，包括：依据所述目标帧画面中的各像素的灰阶电压信息，计算得到所述目标帧画面的目标增益值；依据所述目标增益值控制调整传输所述驱动电压的通道数。
  3. 如权利要求2所述的显示装置的显示驱动方法，其特征在于，所述依据所述目标帧画面中的各像素的灰阶电压信息，计算得到所述目标帧画面的目标增益值，包括：设其中一个像素的灰阶电压为n，所述灰阶电压n的增益值为2n/255，1≤n≤255，将所述目标帧画面各像素的灰阶电压对应的增益值进行求和并计算平均值，所述平均值为所述目标帧画面的目标增益值。
  4. 如权利要求3所述的显示装置的显示驱动方法，其特征在于，所述依据所述目标增益值控制调整传输所述驱动电压的通道数，包括：将所述驱动电压的初始通道数与所述目标增益值相乘得到所述调整后通道数。
  5. 一种显示装置，其特征在于，包括显示面板、第一驱动器及第二驱动器，所述第一驱动器用于获取目标帧画面中的各像素的灰阶电压信息并反馈到所述第二驱动器，所述第二驱动器用于依据所述目标帧画面中的各像素的灰阶电压信息控制调整传输驱动电压的通道数，所述通道数表征所述驱动电压输入 阻抗；所述第二驱动器通过调整后通道数将所述驱动电压输出至所述显示面板，所述第一驱动器提供的灰阶电压与所述第二驱动器提供的驱动电压配合驱动所述显示面板显示所述目标帧画面。
  6. 如权利要求5所述的显示装置，其特征在于，所述第二驱动器包括输出电压控制电路，所述输出电压控制电路包括处理模块及控制模块，所述处理模块依据所述目标帧画面中的各像素的灰阶电压信息计算得到所述目标帧画面的目标增益值，所述控制模块依据所述目标增益值控制调整传输所述驱动电压的通道数，所述控制模块还依据所述调整后通道数将所述驱动电压输出至所述显示面板。
  7. 如权利要求6所述的显示装置，其特征在于，设其中一个像素的灰阶电压为n，所述灰阶电压n的增益值为2n/255，1≤n≤255，所述处理模块将所述目标帧画面各像素的灰阶电压对应的增益值进行求和并计算平均值，所述平均值为所述目标帧画面的目标增益值。
  8. 如权利要求7所述的显示装置，其特征在于，所述控制模块将所述驱动电压的初始通道数与所述目标增益值相乘得到所述调整后通道数，所述控制模块依据所述调整后通道数将所述驱动电压输出至所述显示面板。
  9. 如权利要求5所述的显示装置，其特征在于，所述显示装置还包括电路板，所述电路板与所述显示面板、所述第一驱动器及所述第二驱动器均电性连接。
  10. 如权利要求9所述的显示装置，其特征在于，所述电路板第一端固定于所述显示面板上，所述第一驱动器固定于所述电路板的第一端，所述电路板的第二端与所述第二驱动器电性连接。
  11. 如权利要求9所述的显示装置，其特征在于，所述显示面板包括显示 区及绕所述显示区设置的非显示区，所述第一驱动器设于所述显示面板的非显示区。
PCT/CN2018/107617 2018-09-26 2018-09-26 显示驱动方法及显示装置 WO2020061817A1 (zh)

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