WO2023205929A1 - 显示面板的公共电压补偿装置、显示面板及显示设备 - Google Patents

显示面板的公共电压补偿装置、显示面板及显示设备 Download PDF

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WO2023205929A1
WO2023205929A1 PCT/CN2022/088715 CN2022088715W WO2023205929A1 WO 2023205929 A1 WO2023205929 A1 WO 2023205929A1 CN 2022088715 W CN2022088715 W CN 2022088715W WO 2023205929 A1 WO2023205929 A1 WO 2023205929A1
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WIPO (PCT)
Prior art keywords
compensation
voltage
display panel
point
common voltage
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PCT/CN2022/088715
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English (en)
French (fr)
Inventor
陈锦峰
刘娜妮
王宝强
苏毅烽
孔小丽
邱鑫茂
赵学宁
王巧妮
俞伟明
黄哲
林启标
Original Assignee
京东方科技集团股份有限公司
福州京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 福州京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to CN202280000864.6A priority Critical patent/CN117296006A/zh
Priority to PCT/CN2022/088715 priority patent/WO2023205929A1/zh
Publication of WO2023205929A1 publication Critical patent/WO2023205929A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • 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
    • 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
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/36—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 by control of light from an independent source using liquid crystals

Definitions

  • the present disclosure belongs to the field of display technology, and specifically relates to a common voltage compensation device of a display panel, a display panel and a display device.
  • liquid crystal displays are used more and more widely.
  • Liquid crystal displays use the voltage difference between the common electrode and the pixel electrode to drive the rotation of liquid crystal molecules to achieve picture display.
  • the coupling capacitance between the common electrode and each trace in the liquid crystal display for example, there is a coupling capacitance between the common electrode and the data line, and there is a coupling capacitance between the common electrode and the gate line.
  • the source driving printed circuit board (X-PCB) is arranged on one side of the display panel.
  • the common electrode is usually at a position far away from the X-PCB (which can be called Remote end) Set a voltage feedback line to detect the common voltage on the common electrode and compensate based on the detected common voltage.
  • the compensation effect of this compensation method is poor.
  • the present disclosure aims to solve at least one of the technical problems existing in the related art, and provide a common voltage compensation device for a display panel, a display panel and a display device.
  • an embodiment of the present disclosure provides a common voltage compensation device for a display panel.
  • the display panel includes a first side and a second side opposite to each other along a column direction.
  • the common voltage compensation device is disposed on the display panel. first side,
  • the display panel further includes a common electrode line, the common electrode line is arranged around the display area of the display panel, the common electrode line includes a proximal area adjacent to the first side, an area adjacent to the second side, and a proximal area adjacent to the first side.
  • the common voltage compensation device includes a voltage feedback line, a common voltage compensation circuit and a voltage compensation line,
  • One end of the voltage feedback line is connected to the feedback point in the middle region of the common electrode line, and the other end is connected to the common voltage compensation circuit for detecting the common voltage on the common electrode line;
  • the common voltage compensation circuit is used to obtain a compensation voltage corresponding to the common voltage according to the common voltage detected by the voltage feedback line;
  • One end of the voltage compensation line is connected to the common voltage compensation circuit, and the other end is connected to at least one of the first compensation point in the proximal area, the second compensation point in the middle area, and the distal area of the common electrode line.
  • a third compensation point is used to transmit the compensation voltage to the common electrode line to compensate the common voltage.
  • the display panel further includes a third side and a fourth side opposite in the row direction, and the feedback point is located adjacent to the third side in the mid-end region; the second compensation point A point is located in the middle region adjacent to the fourth side.
  • the common voltage compensation circuit obtains a compensation voltage corresponding to the common voltage based on the common voltage detected by the voltage feedback line, including:
  • negative feedback processing is performed on the coupling voltage to obtain the compensation voltage of the first compensation point, the compensation voltage of the third compensation point and the compensation voltage of the third compensation point.
  • the compensation voltage of the second compensation point and the compensation voltage of the third compensation point are the compensation voltage of the third compensation point.
  • the compensation multiples of the first compensation point, the second compensation point and the third compensation point are the same or different.
  • the voltage compensation line includes at least one first compensation line connected to the first compensation point, a second compensation line connected to the second compensation point, and at least one first compensation line connected to the second compensation point.
  • the third compensation line of the three compensation points is not limited to the first compensation line, a second compensation line connected to the second compensation point, and at least one first compensation line connected to the second compensation point.
  • the first compensation point is located in the middle of the proximal area; there are two third compensation points, and the two third compensation points are located on both sides of the distal area. , and connected to the corresponding third compensation line respectively.
  • an embodiment of the present disclosure provides a display panel, which includes the above-mentioned common voltage compensation device of the display panel.
  • the display panel includes a display panel without PDF image quality detection function.
  • the display panel includes a vertical screen display panel based on COG technology, and the size of the display panel is greater than or equal to a preset size threshold.
  • an embodiment of the present disclosure provides a display device, which includes the above-mentioned display panel.
  • Figures 1a and 1b are schematic diagrams of a display screen and the principle of a greenish tint in the screen.
  • FIG. 2 is a schematic diagram of common voltage feedback and compensation of a display panel in the related art.
  • FIG. 3 is a schematic diagram of common voltage feedback and compensation of a display panel according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of test results of common voltage compensation according to an embodiment of the present disclosure.
  • COG Chip on Glass
  • COG technology reduces the welding process of the display panel, and its volume ratio is greatly reduced. It is easier to miniaturize, simplify and highly integrate, which is conducive to reducing the overall cost. It is often used in small-sized portable and other display products. Since the COG IC chip is highly integrated (timing controller TCON/source driver Source/level conversion Level Shift function three-in-one), it has a high advantage in the cost of the circuit solution and can save the use of electronic devices (for example, general display products The number of components is 280pcs. Using the COG IC chip solution, the number of components can be reduced to 120pcs).
  • Figures 1a and 1b are schematic diagrams of a display screen and the principle of a greenish tint in the screen.
  • Figure 1a shows the pixels of the 1dot display screen. Under the 1dot display screen, adjacent pixels are white and black respectively.
  • Figure 1b shows the data signals and VCOM signals of the pixels of the 1dot display screen.
  • the data signals in the first row of the 1dot display screen have more positive polarities (i.e. red R and blue B pixels) and more negative polarities (i.e. green G pixels). There are too few pixels).
  • the coupling capacitor causes the VCOM signal to shift upward to the dotted line position in the figure.
  • the timing controller TCON is independent and more powerful.
  • the image quality detection function PDF can be used to change the extremes of data output for such pictures. This ensures the balance of positive and negative data polarity, so that VCOM can be less affected by data coupling or can recover quickly after being affected.
  • FIG. 2 is a schematic diagram of common voltage feedback and compensation of a display panel in the related art.
  • the source driving printed circuit board X-PCB
  • the common electrode lines are arranged around the display area of the display panel.
  • the symmetrical bilateral two-point sampling feedback shown in Figure 2 is generally adopted, or for cost and practical effect considerations, the symmetrical near 1/far 3 bilateral compensation input is used, that is, Figure 2 is removed
  • the compensation line 2 in Figure 2 is retained, and the compensation line 13 in Figure 2 is retained.
  • a public voltage compensation device for a display panel which adopts an asymmetric special-shaped VCOM feedback and compensation input scheme, and uses the mid-end side as the feedback point of the common voltage VCOM to negative-direct the feedback point signal.
  • the feedback compensation input is in the middle of the near end, the other side of the middle end, and both sides of the far end, so that the external compensation input can be effectively compensated in place, and the offset part can also be quickly recovered, thus effectively solving the problem of common voltage offset caused by data coupling to the common voltage. , improve the display effect of the display panel.
  • FIG. 3 is a schematic diagram of common voltage feedback and compensation of a display panel according to an embodiment of the present disclosure.
  • the display panel 10 includes a first side A and a second side B opposite in the column direction.
  • the common voltage compensation device is disposed on the first side A of the display panel, where the source drives the printed circuit board (X-PCB).
  • X-PCB printed circuit board
  • FPC Flexible Printed Circuit
  • the COG IC chip is bound to the glass substrate of the display panel.
  • the display panel 10 further includes a common electrode line 11 arranged around the display area of the display panel.
  • the common electrode line includes a proximal area adjacent to the first side A, adjacent to the second side B, and away from the second side.
  • a common voltage compensation device includes a voltage feedback line 12, a common voltage compensation circuit 14 and a voltage compensation line (corresponding to 123 in Figure 3).
  • One end of the voltage feedback line 12 is connected to the feedback point 13 in the middle area of the common electrode line, and the other end is connected to the common voltage compensation circuit 14 for detecting the common voltage on the common electrode line 11;
  • the common voltage compensation circuit 14 is used to obtain a compensation voltage corresponding to the common voltage according to the common voltage VCOM detected by the voltage feedback line 12;
  • One end of the voltage compensation line is connected to the common voltage compensation circuit, and the other end is connected to the first compensation point in the proximal area of the common electrode line, the second compensation point in the middle area, and at least one third compensation point in the distal area of the common electrode line.
  • the compensation point is used to transmit the compensation voltage to the common electrode line to compensate the common voltage.
  • the common electrode lines 11 in addition to arranging the common electrode lines 11 around the display area of the display panel, it may also include multiple common electrode lines (not shown) in the display area, for example, arranged side by side along the column direction of the display panel.
  • a plurality of common electrode lines are used to provide a common voltage to the display area, and the voltage difference between the common voltage and the pixel signal voltage is used to drive the rotation of liquid crystal molecules in each pixel point, thereby realizing picture display.
  • the display panel further includes a third side C and a fourth side D opposite each other along the row direction, and the feedback point may be located adjacent to the third side C in the mid-end region, that is, the feedback point 13 in Figure 3;
  • the second compensation point may be located in the mid-end region adjacent to the fourth side D, that is, the intersection of the compensation line 2 and the common electrode line 11 in FIG. 3 .
  • the feedback point can also be set at a position adjacent to the fourth side D in the mid-end region, and the second compensation point can be set at a position adjacent to the third side C in the mid-end region, and this disclosure is not limited.
  • the feedback point and the second compensation point can be set at the center of the mid-end region, or can be set at a position in the mid-end region that is biased toward the first side or biased toward the second side; the feedback point and the second compensation point
  • the positions of can also be set asymmetrically, and the present disclosure does not limit the specific positions of the feedback point and the second compensation point.
  • setting the feedback point in the mid-range area can reduce the signal delay of the detected common voltage and improve the accuracy of the detected common voltage; setting the second compensation point in the mid-range The position in the area relative to the feedback point can improve the compensation speed and effect of the mid-range area of the common electrode line.
  • one end of the voltage feedback line 12 is connected to the feedback point 13 in the middle region of the common electrode line, and the other end is connected to the common voltage compensation circuit 14, and the detected common voltage is input into the common voltage compensation circuit 14.
  • the common voltage compensation circuit 14 is used to obtain a compensation voltage corresponding to the common voltage according to the common voltage detected by the voltage feedback line.
  • the common voltage compensation circuit 14 can be arranged on the X-PCB board or outside the X-PCB board, and this disclosure does not limit this.
  • the common voltage compensation circuit 14 may include multiple operational amplifiers (OPs) to determine the compensation voltage in a negative feedback manner. Wherein, the common voltage compensation circuit obtains the compensation voltage corresponding to the common voltage based on the common voltage detected by the voltage feedback line, including:
  • the common voltage compensation circuit 14 may determine the voltage difference between the common voltage detected by the voltage feedback line and a preset common voltage threshold, and use the voltage difference as the coupling voltage. If the detected common voltage is greater than the common voltage threshold, the coupling voltage is positive; conversely, if the detected common voltage is less than the common voltage threshold, the coupling voltage is negative. This disclosure does not limit the specific value of the common voltage threshold.
  • the compensation multiples of the first compensation point, the second compensation point, and the third compensation point may be preset.
  • the compensation multiples of the first compensation point, the second compensation point and the third compensation point may be the same or different.
  • the compensation multiples of the first compensation point, the second compensation point and the third compensation point can be determined through actual testing, or the first compensation point, the second compensation point and the third compensation point can be determined through circuit simulation. Compensation multiple, this disclosure does not limit this.
  • the common voltage compensation circuit 14 can perform negative feedback processing on the coupling voltage to obtain the respective The compensation voltage of the first compensation point, the compensation voltage of the second compensation point and the compensation voltage of the third compensation point. That is, if the coupling voltage is a positive value, each compensation voltage is a negative value; if the coupling voltage is a negative value, each compensation voltage is a positive value, so that the compensated common voltage is closer to the common voltage threshold.
  • the compensation of the common voltage can be achieved and the offset of the common voltage can be reduced, thereby improving the display effect of the display panel.
  • one end of the voltage compensation line is connected to the common voltage compensation circuit, and the other end is connected to the first compensation point in the proximal region, the second compensation point in the middle region, and the distal end of the common electrode line.
  • At least one third compensation point in the area is used to transmit the compensation voltage to the common electrode line to compensate the common voltage.
  • the voltage compensation line includes at least a first compensation line connected to a first compensation point, a second compensation line connected to a second compensation point, and a third compensation line connected to at least a third compensation point .
  • the first compensation point is located in the middle of the proximal area; there are two third compensation points, and the two third compensation points are located on both sides of the distal area. , and connected to the corresponding third compensation line respectively.
  • first compensation lines there may be one or more first compensation lines. As shown in Figure 3, there are two first compensation lines (corresponding to 1 in Figure 3), both of which are connected to the first compensation point located in the middle of the proximal area. If there are multiple first compensation points, multiple first compensation lines can also be connected to corresponding first compensation points respectively.
  • the second compensation line (corresponding to 2 in Figure 3) may be one, connected to the second compensation point in the mid-end region.
  • the two third compensation points are located on both sides of the distal area and are respectively connected to the corresponding third compensation lines.
  • the common voltage compensation device of the display panel can ensure that the feedback point can most truly reflect the VCOM compensation status in the display panel, which not only ensures that excessive coupling at the mid-end feedback point will not cause excessive coupling between the near-end and far-end inputs. Compensation can also ensure that the coupling amount is not too small, resulting in insufficient near-end and far-end compensation, and at the same time, the coupling voltage can quickly recover in less than one line of display time to reach a balanced and optimal position.
  • the common voltage compensation device of a display panel can be applied to any display panel that does not have the image quality detection function PDF, and can especially be applied to a vertical screen display panel based on COG technology, and the size of the display panel is greater than or equal to
  • the preset size threshold means that the display panel is a medium to large size display panel. Wherein, the preset size threshold is set to 20 inches, for example, and the present disclosure does not limit the specific value of the preset size threshold.
  • coupling voltage/recovery time may be used to represent the effect of VCOM compensation.
  • the display time of one line on the display panel is about 8.5us (at 60Hz).
  • the conventional VCOM feedback compensation method of small and medium size display products that is, the compensation line 2 in Figure 2 is removed, the compensation lines 13 in Figure 2 are retained, and the compensation multiple is adjusted to the maximum
  • the best situation (the near end needs to be set to 15 times, the far end needs to be set to 24 times), the test confirmed that the on-screen compensation situation is: 320mV/4.28us. Comparing with the initial display state, although the recovery time can be reduced (from 8.5us to 4.28us), the coupling voltage has increased (from 168mV to 320mV), and overcompensation occurs after compensation and amplification, resulting in The overall picture is reddish and the display effect is still poor.
  • the public voltage compensation device of the display panel according to the embodiment of the present disclosure that is, the above-mentioned asymmetric and special-shaped common voltage VCOM feedback compensation method, is used to adjust the compensation multiple to the optimal situation (near-end The first compensation point in the area sets the compensation multiple to 10 times, the second compensation point on the right side of the middle area sets the compensation multiple to 75 times, and the third compensation point in the far end area sets the compensation multiple to 24 times), the test confirmation screen
  • FIG. 4 is a schematic diagram of test results of common voltage compensation according to an embodiment of the present disclosure.
  • VCOM-FEED represents the common voltage obtained by the test
  • SOUT represents the voltage of the data signal obtained by the test. It can be seen that during the period when SOUT is high level (8.5us), VCOM-FEED produces a certain offset on the rising edge when SOUT becomes high level, but it is compensated and restored after the recovery time (about 2.12us), and the coupling The voltage is smaller; during the period when SOUT is low, the compensation effect is similar.
  • the recovery time can be significantly reduced (from 8.5us to 2.12us) while keeping the coupling voltage unchanged.
  • the ⁇ y of the actual display screen in the test was reduced from -0.1288 before the default improvement to -0.0145 after the improvement, which is within the preset threshold range of
  • ⁇ y can represent the difference between the display parameters (color gamut, brightness, etc.) under the full-bright display screen and the display parameters under the 1dot display screen, and is used to represent the display effect of the display panel.
  • can be set to 0.02, for example, and the disclosure does not limit this.
  • an asymmetric special-shaped VCOM feedback and compensation input scheme is adopted, that is, only one side of the middle area of the vertical screen is used as the feedback point of the common voltage VCOM (such as the middle left side point), input the feedback point signal negative feedback compensation into the middle of the proximal area, the other side of the mid-end area, and both sides of the far-end area.
  • a display panel which includes the above-mentioned common voltage compensation device of the display panel.
  • This disclosure does not limit the specific type of display panel.
  • the display panel includes a display panel without the PDF image quality detection function. That is to say, the common voltage compensation device of the display panel can also be extended to any display panel without PDF function, such as a conventional display panel of TCON IC chip, thereby improving the display effect while reducing the common voltage compensation of the display product. part of the cost.
  • the display panel includes a vertical screen display panel based on COG technology, and the size of the display panel is greater than or equal to a preset size threshold.
  • the preset size threshold is set to 20 inches, for example, and the present disclosure does not limit the specific value of the preset size threshold.
  • a display device which includes the above-mentioned display panel.
  • the display device can be: a mobile phone, a tablet computer, a television, a monitor, a laptop, a digital photo frame, a navigator, or any other product or component with a display function.
  • Other essential components of the display device are understood by those of ordinary skill in the art, and will not be described in detail here, nor should they be used to limit the present disclosure.
  • the circuits or sub-circuits described in the embodiments of the present disclosure may be implemented in software or hardware.
  • the described circuit or sub-circuit can also be provided in a processor.
  • a processor including: a receiving circuit and a processing circuit.
  • the processing module includes a writing sub-circuit and a reading sub-circuit.
  • the names of these circuits or sub-circuits do not constitute a limitation on the circuit or sub-circuit itself under certain circumstances.
  • a receiving circuit can also be described as "receiving video signals".

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Abstract

本公开提供一种显示面板的公共电压补偿装置、显示面板及显示设备，属于显示技术领域。该公共电压补偿装置设置在显示面板的第一侧，显示面板的公共电极线包括近端、远端及中端区域；公共电压补偿装置包括电压反馈线、公共电压补偿电路及电压补偿线，电压反馈线一端连接到中端区域的反馈点，另一端连接到公共电压补偿电路，用于检测公共电极线上的公共电压；公共电压补偿电路用于根据检测到的公共电压，得到对应的补偿电压；电压补偿线一端连接到公共电压补偿电路，另一端分别连接到公共电极线的近端区域的第一补偿点、中端区域的第二补偿点以及远端区域的至少一个第三补偿点，用于将补偿电压传输到公共电极线，以对公共电压进行补偿。

Description

显示面板的公共电压补偿装置、显示面板及显示设备 技术领域
本公开属于显示技术领域，具体涉及一种显示面板的公共电压补偿装置、显示面板及显示设备。
背景技术
目前，液晶显示器(Liquid Crystal Display，LCD)的应用越来越广泛，液晶显示器利用公共电极和像素电极之间的电压差来驱动液晶分子旋转，进而实现画面显示。在液晶显示器中，由于公共电极与液晶显示器中的各走线之间存在耦合电容，例如公共电极与数据线之间存在耦合电容，公共电极和栅线之间存在耦合电容，在栅线或者数据线上的信号发生突变时，即从高电平降到低电平或从低电平降到高电平时，耦合电容两端的电压发生突变，导致公共电极的公共电压(VCOM)产生波动，难以保持稳定，进而公共电极和像素电极之间的电压差发生异常，使液晶显示器出现残像、串扰等问题，影响显示效果。因此，需要对公共电压进行补偿。
相关技术中，源驱动印制电路板(X-PCB)设置在显示面板一侧，在对公共电极上的公共电压进行补偿时，通常在公共电极距X-PCB较远的位置(可称为远端)设置电压反馈线，以检测公共电极上的公共电压，根据检测到的公共电压进行补偿。然而，这种补偿方式的补偿效果较差。
发明内容
本公开旨在至少解决相关技术中存在的技术问题之一，提供一种显示面板的公共电压补偿装置、显示面板及显示设备。
第一方面，本公开实施例提供一种显示面板的公共电压补偿装置，所述显示面板包括沿列方向相对的第一侧和第二侧，所述公共电压补偿装置设置在所述显示面板的第一侧，
其中，所述显示面板还包括公共电极线，所述公共电极线围绕所述显示面板的显示区域布置，所述公共电极线包括邻近所述第一侧的近端区域、邻 近所述第二侧的远端区域，以及处于所述近端区域与所述远端区域之间的中端区域；
其中，所述公共电压补偿装置包括电压反馈线、公共电压补偿电路及电压补偿线，
所述电压反馈线一端连接到所述公共电极线的中端区域的反馈点，另一端连接到所述公共电压补偿电路，用于检测所述公共电极线上的公共电压；
所述公共电压补偿电路用于根据所述电压反馈线检测到的所述公共电压，得到与所述公共电压对应的补偿电压；
所述电压补偿线一端连接到所述公共电压补偿电路，另一端分别连接到所述公共电极线的近端区域的第一补偿点、中端区域的第二补偿点以及远端区域的至少一个第三补偿点，用于将所述补偿电压传输到所述公共电极线，以对所述公共电压进行补偿。
在一些实施例中，所述显示面板还包括沿行方向相对的第三侧和第四侧，所述反馈点处于所述中端区域中邻近所述第三侧的位置；所述第二补偿点处于所述中端区域中邻近所述第四侧的位置。
在一些实施例中，所述公共电压补偿电路根据所述电压反馈线检测到的所述公共电压，得到与所述公共电压对应的补偿电压，包括：
根据所述电压反馈线检测到的所述公共电压和预设的公共电压阈值，确定耦合电压；
根据所述第一补偿点、所述第二补偿点及所述第三补偿点的补偿倍数，对所述耦合电压进行负反馈处理，分别得到所述第一补偿点的补偿电压、所述第二补偿点的补偿电压及所述第三补偿点的补偿电压。
在一些实施例中，所述第一补偿点、所述第二补偿点与所述第三补偿点的补偿倍数相同或不同。
在一些实施例中，所述电压补偿线包括连接到所述第一补偿点的至少一条第一补偿线、连接到所述第二补偿点的第二补偿线，以及连接到至少一个所述第三补偿点的第三补偿线。
在一些实施例中，所述第一补偿点处于所述近端区域的中间位置；所述第三补偿点为两个，两个所述第三补偿点处于所述远端区域的两侧位置，并分别连接到相应的第三补偿线。
第二方面，本公开实施例提供一种显示面板，该显示面板包括上述的显示面板的公共电压补偿装置。
在一些实施例中，所述显示面板包括不具备画质检测功能PDF的显示面板。
在一些实施例中，所述显示面板包括基于COG技术的竖屏显示面板，且所述显示面板的尺寸大于或等于预设尺寸阈值。
第三方面，本公开实施例提供一种显示设备，所述显示设备包括上述的显示面板。
附图说明
图1a和图1b为显示画面及画面偏绿的原理的示意图。
图2为相关技术的显示面板的公共电压反馈及补偿的示意图。
图3为本公开的实施例的显示面板的公共电压反馈及补偿的示意图。
图4为本公开的实施例的公共电压补偿的测试结果的示意图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理 的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在显示技术领域，COG(Chip on Glass，芯片绑定到玻璃基板上)技术是指直接将驱动IC芯片绑定在玻璃基板上。COG技术减少了显示面板的焊接工艺，其体积比大大缩小，更易于小型化、简易化和高度集成化，有利于综合成本的降低，常用于小尺寸便携式等显示产品。由于COG IC芯片具有高度集成化(定时控制器TCON/源驱动Source/电平转换Level Shift功能三合一)，因此在电路方案成本上具有高度优势，可以节省电子器件使用(例如，一般显示产品的元器件数量为280pcs，使用COG IC芯片方案，元器件数量可降低至120pcs)。
近年来，越来越多的厂商尝试将COG技术用于中小尺寸的显示产品，甚至挑战中大尺寸的显示产品。但正是其高度集成化，加上过往常用于小尺寸的显示产品，一些中大尺寸的显示产品需要的功能无法整合其中(例如，画质检测功能(PDF，Pattern Detect Function))，这使得将COG用于中大尺寸的显示产品后，会导致VCOM补偿不到位或者VCOM受信号耦合偏移后无法及时恢复等，引发诸如特殊显示画面偏绿(Greenish)的问题。
图1a和图1b为显示画面及画面偏绿的原理的示意图。图1a示出了1dot显示画面的像素点，1dot显示画面下，相邻的像素点分别为白色和黑色；图1b示出了1dot显示画面的像素点的数据信号及VCOM信号。在采用列架构，使用列(Column)反转方式进行显示的情况下，1dot显示画面下第一行的数据信号正极性(即红色R和蓝色B像素)偏多，负极性(即绿色G像素)偏少，耦合电容导致VCOM信号向上偏移到图中虚线位置，如果无法及时恢复，则会导致正极性的R&B像素与VCOM压差减小，偏暗；负极性的G像素与VCOM压差增大，偏亮。同理，1dot画面在此显示模式下其他行都可推导出G偏亮，R&B偏暗，因此将出现画面偏绿Greenish的现象。
对于常规的显示产品，例如COF(Chip On Film，覆晶薄膜)显示产品，其定时控制器TCON是独立的，功能更强大，可以采用画质检测功能PDF， 针对此类画面改变数据输出的极性，确保数据正负极性平衡，使VCOM能少受数据耦合影响或受影响后也能快速恢复。
除了上述PDF功能，要想使VCOM受信号耦合偏移后快速恢复，只能从VCOM反馈补偿出发。中大尺寸的常规显示产品一般采用对称式双边两点采样反馈(Feed back)，对称式近端①/中端②/远端③双边补偿输入。
图2为相关技术的显示面板的公共电压反馈及补偿的示意图。如图2所示，源驱动印制电路板(X-PCB)设置在显示面板一侧，公共电极线围绕显示面板的显示区域布置。在对公共电极线上的公共电压(VCOM)进行补偿时，在公共电极线上距离X-PCB偏远或中间的位置(图2中较大的圆点)设置电压反馈线(图2中向下的箭头)，以检测公共电极上的公共电压；并根据检测到的公共电压得到补偿电压，通过多条补偿线(图2中的①②③)，分别在公共电极线上距离X-PCB较近的位置(称为近端)的多个点(对应图2中的补偿线①)、中间位置(称为中端)对称的两侧的两个点(对应图2中的补偿线②)，以及距离X-PCB较远的位置(称为远端)对称的两侧的两个点(对应图2中的补偿线③)进行补偿。
对于中小尺寸的常规显示产品，一般也采取图2所示的对称式双边两点采样反馈，或者出于成本以及实际效果考虑，采用对称式近①/远③双边补偿输入，也即去掉图2中的补偿线②，保留图2中的补偿线①③。
对于中小尺寸或小尺寸(例如10.1寸)的COG显示产品，亦可参考上述常规显示产品的VCOM补偿方式，或者无需采用反馈，而是直接输入的方式。因为产品尺寸小，面内走线受到耦合的影响也较小，直驱方式也能确保屏内VCOM稳定。
而对于中大尺寸(例如21.45寸)的COG显示产品，尤其是中大尺寸的竖屏COG显示产品，其显示面板内纵向的VCOM公共电极线走线较长，即使采用上述中大尺寸的常规显示产品的VCOM反馈补偿方案，仍然无法解决1dot画面数据耦合VCOM导致的偏绿Greenish问题，且偏绿程度异常严重。
根据本公开的实施例，提供了一种显示面板的公共电压补偿装置，采用非对称式异型VCOM反馈和补偿输入方案，通过中端一侧作为公共电压VCOM的反馈点，将反馈点信号负向反馈补偿输入近端中部、中端另一侧和远端两侧，使得外部补偿输入能有效补偿到位，偏移部分也能快速恢复，从而能够有效解决数据耦合公共电压引起公共电压偏移的问题，提高显示面板的显示效果。
图3为本公开的实施例的显示面板的公共电压反馈及补偿的示意图。如图3所示，显示面板10包括沿列方向相对的第一侧A和第二侧B，公共电压补偿装置设置在显示面板的第一侧A，其中源驱动印制电路板(X-PCB)同样处于显示面板的第一侧A，通过柔性电路板(FlexiblePrintedCircuit，FPC)连接到显示面板，COG IC芯片绑定在显示面板的玻璃基板上。
在一些实施例中，显示面板10还包括公共电极线11，公共电极线11围绕显示面板的显示区域布置，公共电极线包括邻近第一侧A的近端区域、邻近第二侧B、远离第一侧A的远端区域，以及处于近端区域与远端区域之间的中端区域。
在一些实施例中，如图3所示，根据本公开实施例的公共电压补偿装置包括电压反馈线12、公共电压补偿电路14及电压补偿线(对应于图3中的①②③)。
电压反馈线12一端连接到公共电极线的中端区域的反馈点13，另一端连接到公共电压补偿电路14，用于检测公共电极线11上的公共电压；
公共电压补偿电路14用于根据电压反馈线12检测到的公共电压VCOM，得到与公共电压对应的补偿电压；
电压补偿线一端连接到所述公共电压补偿电路，另一端分别连接到所述公共电极线的近端区域的第一补偿点、中端区域的第二补偿点以及远端区域的至少一个第三补偿点，用于将补偿电压传输到公共电极线，以对公共电压进行补偿。
举例来说，在显示面板中，除了围绕显示面板的显示区域布置公共电极 线11，还可包括显示区域内的多条公共电极线(未示出)，例如沿显示面板的列方向并排设置的多条公共电极线，用于向显示区域提供公共电压，通过公共电压与像素信号电压之间的电压差来驱动各个像素点的液晶分子旋转，从而实现画面显示。
在一些实施例中，显示面板还包括沿行方向相对的第三侧C和第四侧D，反馈点可处于中端区域中邻近第三侧C的位置，即图3中的反馈点13；第二补偿点可处于中端区域中邻近第四侧D的位置，即图3中的补偿线②与公共电极线11的交点。应当理解，也可将反馈点设置在中端区域中邻近第四侧D的位置，将第二补偿点设置在中端区域中邻近第三侧C的位置，本公开对此不作限制。
在一些实施例中，反馈点和第二补偿点可设置在中端区域中央的位置，也可设置在中端区域中偏向第一侧或偏向第二侧的位置；反馈点和第二补偿点的位置也可不对称设置，本公开对反馈点和第二补偿点的具体位置不作限制。
根据本公开的实施例，将反馈点设置在中端区域，能够减小检测到的公共电压的信号延迟(delay)，提高检测到的公共电压的准确度；将第二补偿点设置在中端区域中与反馈点相对的位置，能够提高对公共电极线的中端区域的补偿速度和补偿效果。
由于COG显示产品的走线区域有限，因此不能设置太多反馈点和补偿点。根据本公开的实施例，能够在反馈点和补偿点数量较少的情况下，实现公共电压的补偿，提高显示面板的显示效果。
在一些实施例中，电压反馈线12一端连接到公共电极线的中端区域的反馈点13，另一端连接到公共电压补偿电路14，将检测到的公共电压输入到公共电压补偿电路14中。
在一些实施例中，公共电压补偿电路14用于根据电压反馈线检测到的公共电压，得到与公共电压对应的补偿电压。其中，公共电压补偿电路14可设置在X-PCB板上，也可设置在X-PCB板外，本公开对此不作限制。
在一些实施例中，公共电压补偿电路14可包括多个运算放大器(OP)，以负反馈的方式确定补偿电压。其中，公共电压补偿电路根据所述电压反馈线检测到的所述公共电压，得到与所述公共电压对应的补偿电压，包括：
根据所述电压反馈线检测到的所述公共电压和预设的公共电压阈值，确定耦合电压；根据所述第一补偿点、所述第二补偿点及所述第三补偿点的补偿倍数，对所述耦合电压进行负反馈处理，分别得到所述第一补偿点的补偿电压、所述第二补偿点的补偿电压及所述第三补偿点的补偿电压。
举例来说，公共电压补偿电路14可确定电压反馈线检测到的公共电压和预设的公共电压阈值之间的电压差，并将该电压差作为耦合电压。如果检测到的公共电压大于公共电压阈值，则耦合电压为正值；反之，如果检测到的公共电压小于公共电压阈值，则耦合电压为负值。本公开对公共电压阈值的具体取值不作限制。
在一些实施例中，可预设有第一补偿点、第二补偿点及第三补偿点的补偿倍数。第一补偿点、第二补偿点及第三补偿点的补偿倍数之间可相同或不同。其中，可通过实际测试的方式确定第一补偿点、第二补偿点及第三补偿点的补偿倍数，也可通过电路仿真的方式确定第一补偿点、第二补偿点及第三补偿点的补偿倍数，本公开对此不作限制。
在一些实施例中，根据所述第一补偿点、所述第二补偿点及所述第三补偿点的补偿倍数，公共电压补偿电路14可对所述耦合电压进行负反馈处理，分别得到所述第一补偿点的补偿电压、所述第二补偿点的补偿电压及所述第三补偿点的补偿电压。也即，如果耦合电压为正值，则各个补偿电压为负值；如果耦合电压为负值，则各个补偿电压为正值，以使得补偿后的公共电压更接近公共电压阈值。
通过这种方式，可以实现公共电压的补偿，减小公共电压的偏移量，从而提高显示面板的显示效果。
在一些实施例中，电压补偿线一端连接到所述公共电压补偿电路，另一端分别连接到所述公共电极线的近端区域的第一补偿点、中端区域的第二补 偿点以及远端区域的至少一个第三补偿点，用于将所述补偿电压传输到所述公共电极线，以对公共电压进行补偿。
在一些实施例中，电压补偿线包括连接到第一补偿点的至少一条第一补偿线、连接到第二补偿点的第二补偿线，以及连接到至少一个第三补偿点的第三补偿线。
在一些实施例中，所述第一补偿点处于所述近端区域的中间位置；所述第三补偿点为两个，两个所述第三补偿点处于所述远端区域的两侧位置，并分别连接到相应的第三补偿线。
也就是说，第一补偿线可以为一条或多条。如图3所示，第一补偿线(对应于图3中的①)为两条，均连接到处于近端区域的中间位置的第一补偿点。如果第一补偿点为多个，多条第一补偿线也可以分别连接到相应的第一补偿点。
在一些实施例中，第二补偿线(对应于图3中的②)可以为一条，连接到中端区域的第二补偿点。
在一些实施例中，第三补偿点可以为一个或多个，分别具有相应的第三补偿线。在第三补偿点为两个的情况下(对应于图3中的③)，两个第三补偿点处于远端区域的两侧位置，并分别连接到相应的第三补偿线。
通过这种方式，对延迟较小的近端区域和中端区域设置较少的补偿点，对延迟较大的远端区域设置较多的补偿点，能够提高补偿点数量有限的情况下的补偿效果。
根据本公开实施例的显示面板的公共电压补偿装置，能确保反馈点能最真实反应显示面板内VCOM补偿状况，既确保了中端反馈点不会出现过大耦合导致近端和远端输入过补，也可确保其耦合量不会太小而导致近端和远端补偿不到位，同时使耦合电压能够在小于一行显示时间内快速恢复，达到平衡且较佳佳的位置。
根据本公开实施例的显示面板的公共电压补偿装置，能够应用于不具备画质检测功能PDF的任意显示面板，尤其能够应用于基于COG技术的竖屏 显示面板，且显示面板的尺寸大于或等于预设尺寸阈值，也即该显示面板为中大尺寸的显示面板。其中，该预设尺寸阈值例如设置为20寸，本公开对预设尺寸阈值的具体取值不作限制。
在一些实施例中，可采用耦合电压/恢复时间来表示VCOM补偿的效果。耦合电压越小，则表示公共电压VCOM的偏移越小，补偿效果越好；恢复时间越小，则表示公共电压VCOM补偿的电压恢复速度越快，显示效果越好。
在实际测试中，显示面板中一行显示时间约为8.5us(60Hz情况下)。
对于中大尺寸的COG竖屏显示面板，如果采用常规的中大尺寸显示产品的公共电压VCOM反馈补偿方式(如图2所示)，例如个补偿点均设置为1倍补偿，通过测试确认显示面板内补偿情况，在1dot画面下实测反馈点耦合情况为：耦合电压/恢复时间＝168mV/8.5us。相当于整个显示行时间段内公共电压VCOM都被数据耦合偏移，因此偏绿Greenish现象异常严重。在此方案上通过加大补偿倍数，测试发现会进一步加大耦合电压，却无法减小恢复时间，实际面内依然补偿不到位。
对于中大尺寸的COG竖屏显示面板，如果采用常规的中小尺寸显示产品的VCOM反馈补偿方式，也即去掉图2中的补偿线②，保留图2中的补偿线①③，调节补偿倍数至最佳情况(近端需设置15倍，远端需设置24倍)，测试确认屏内补偿情况为：320mV/4.28us。与初始显示状态进行比对，虽然可以减小恢复时间(由8.5us减小到4.28us)，但是耦合电压变大了(由168mV增大到320mV)，经过补偿放大后出现过补情况，导致画面整体偏红，显示效果仍然较差。
对于中大尺寸的COG竖屏显示面板，采用根据本公开实施例的显示面板的公共电压补偿装置，即上述非对称式异型的公共电压VCOM反馈补偿方式，调节补偿倍数至最佳情况(近端区域的第一补偿点设置补偿倍数为10倍，中端区域右侧的第二补偿点设置补偿倍数为75倍，远端区域的第三补偿点设置补偿倍数为24倍)，测试确认屏内补偿情况为：耦合电压/恢复 时间＝168mV/2.12us。
图4为本公开的实施例的公共电压补偿的测试结果的示意图。如图4所示，VCOM-FEED表示测试得到的公共电压，SOUT表示测试得到的数据信号的电压。可见，在SOUT为高电平的时间段(8.5us)内，VCOM-FEED在SOUT变为高电平的上升沿产生一定偏移，但在恢复时间(约2.12us)后被补偿恢复，耦合电压较小；在SOUT为低电平的时间段内，补偿效果类似。
与初始显示状态进行比对，虽然补偿倍数加大了，却能在保持耦合电压不变的情况下，显著减小恢复时间(由8.5us减小到2.12us)。测试实际显示画面的Δy由默认改善前的-0.1288降低至改善后-0.0145，处于|Δy|的预设阈值范围内。可见，根据本公开的实施例能够显著改善显示面板的显示效果。
在一些实施例中，Δy可表示全亮显示画面下的显示参数(色域、亮度等)与1dot显示画面下的显示参数之间的差值，用于表示显示面板的显示效果。|Δy|越小，则可表示显示效果越好。|Δy|的预设阈值可例如设置为0.02，本公开对此不作限制。
应当理解，上述各个补偿点的补偿倍数的设置值以及补偿后的耦合电压/恢复时间的取值可根据显示面板的不同而变化，本公开对其具体取值不作限制。
根据本公开实施例的显示面板的公共电压补偿装置，采用了非对称式异型VCOM反馈和补偿输入方案，也即仅采用竖屏中端区域一侧作为公共电压VCOM的反馈点(如左侧中部一点)，将反馈点信号负向反馈补偿输入近端区域的中部、中端区域的另一侧和远端区域的两侧。在COG显示产品走线区域有限，不能设置太多反馈点和补偿点的情况下，有效克服了显示数据耦合公共电压VCOM引起的VCOM偏移所导致的显示偏绿Greenish问题，使得其外部补偿输入能有效补偿到位，公共电压VCOM偏移部分也能快速恢复，从而显著提高了显示面板(尤其是中大尺寸的COG竖屏显示面板)的显示效果。
根据本公开的实施例，还提供了一种显示面板，该显示面板包括上述的 显示面板的公共电压补偿装置。本公开对显示面板的具体类型不作限制。
在一些实施例中，该显示面板包括不具备画质检测功能PDF的显示面板。也即，该显示面板的公共电压补偿装置也可扩展适用于不具有PDF功能的任意显示面板，例如TCON IC芯片的常规显示面板中，从而在提高显示效果的同时，降低显示产品在公共电压补偿部分的成本。
在一些实施例中，该显示面板包括基于COG技术的竖屏显示面板，且该显示面板的尺寸大于或等于预设尺寸阈值。其中，该预设尺寸阈值例如设置为20寸，本公开对预设尺寸阈值的具体取值不作限制。
根据本公开的实施例，还提供了一种显示设备，该显示设备包括上述的显示面板。该显示设备可以为：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。对于该显示设备的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此不做赘述，也不应作为对本公开的限制。
描述于本公开实施例中所涉及到的电路或子电路可以通过软件的方式实现，也可以通过硬件的方式来实现。所描述的电路或子电路也可以设置在处理器中，例如，可以描述为：一种处理器，包括：接收电路和处理电路，该处理模块包括写入子电路和读取子电路。其中，这些电路或子电路的名称在某种情况下并不构成对该电路或子电路本身的限定，例如，接收电路还可以被描述为“接收视频信号”。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (10)

  1. 一种显示面板的公共电压补偿装置，所述显示面板包括沿列方向相对的第一侧和第二侧，所述公共电压补偿装置设置在所述显示面板的第一侧，
    其中，所述显示面板还包括公共电极线，所述公共电极线围绕所述显示面板的显示区域布置，所述公共电极线包括邻近所述第一侧的近端区域、邻近所述第二侧的远端区域，以及处于所述近端区域与所述远端区域之间的中端区域；
    其中，所述公共电压补偿装置包括电压反馈线、公共电压补偿电路及电压补偿线，
    所述电压反馈线一端连接到所述公共电极线的中端区域的反馈点，另一端连接到所述公共电压补偿电路，用于检测所述公共电极线上的公共电压；
    所述公共电压补偿电路用于根据所述电压反馈线检测到的所述公共电压，得到与所述公共电压对应的补偿电压；
    所述电压补偿线一端连接到所述公共电压补偿电路，另一端分别连接到所述公共电极线的近端区域的第一补偿点、中端区域的第二补偿点以及远端区域的至少一个第三补偿点，用于将所述补偿电压传输到所述公共电极线，以对所述公共电压进行补偿。
  2. 根据权利要求1所述的装置，其中，所述显示面板还包括沿行方向相对的第三侧和第四侧，所述反馈点处于所述中端区域中邻近所述第三侧的位置；所述第二补偿点处于所述中端区域中邻近所述第四侧的位置。
  3. 根据权利要求1所述的装置，其中，所述公共电压补偿电路根据所述电压反馈线检测到的所述公共电压，得到与所述公共电压对应的补偿电压，包括：
    根据所述电压反馈线检测到的所述公共电压和预设的公共电压阈值，确定耦合电压；
    根据所述第一补偿点、所述第二补偿点及所述第三补偿点的补偿倍数， 对所述耦合电压进行负反馈处理，分别得到所述第一补偿点的补偿电压、所述第二补偿点的补偿电压及所述第三补偿点的补偿电压。
  4. 根据权利要求3所述的装置，其中，所述第一补偿点、所述第二补偿点与所述第三补偿点的补偿倍数相同或不同。
  5. 根据权利要求1所述的装置，其中，所述电压补偿线包括连接到所述第一补偿点的至少一条第一补偿线、连接到所述第二补偿点的第二补偿线，以及连接到至少一个所述第三补偿点的第三补偿线。
  6. 根据权利要求5所述的装置，其中，所述第一补偿点处于所述近端区域的中间位置；所述第三补偿点为两个，两个所述第三补偿点处于所述远端区域的两侧位置，并分别连接到相应的第三补偿线。
  7. 一种显示面板，其中，所述显示面板包括权利要求1-6任一所述的显示面板的公共电压补偿装置。
  8. 根据权利要求7所述的显示面板，其中，所述显示面板包括不具备画质检测功能PDF的显示面板。
  9. 根据权利要求7所述的显示面板，其中，所述显示面板包括基于COG技术的竖屏显示面板，且所述显示面板的尺寸大于或等于预设尺寸阈值。
  10. 一种显示设备，其中，所述显示设备包括权利要求7-9任一所述的显示面板。
PCT/CN2022/088715 2022-04-24 2022-04-24 显示面板的公共电压补偿装置、显示面板及显示设备 WO2023205929A1 (zh)

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CN106875880A (zh) * 2017-04-28 2017-06-20 合肥京东方光电科技有限公司 一种公共电压补偿电路、补偿方法及显示装置
CN109616043A (zh) * 2019-02-15 2019-04-12 京东方科技集团股份有限公司 一种电压控制电路及其控制方法、显示装置
CN111308820A (zh) * 2020-03-11 2020-06-19 京东方科技集团股份有限公司 阵列基板、显示装置及其控制方法

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CN106875880A (zh) * 2017-04-28 2017-06-20 合肥京东方光电科技有限公司 一种公共电压补偿电路、补偿方法及显示装置
CN109616043A (zh) * 2019-02-15 2019-04-12 京东方科技集团股份有限公司 一种电压控制电路及其控制方法、显示装置
CN111308820A (zh) * 2020-03-11 2020-06-19 京东方科技集团股份有限公司 阵列基板、显示装置及其控制方法

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