WO2014153822A1 - Drive control unit, drive circuit, and drive control method of display substrate - Google Patents

Drive control unit, drive circuit, and drive control method of display substrate Download PDF

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Publication number
WO2014153822A1
WO2014153822A1 PCT/CN2013/075922 CN2013075922W WO2014153822A1 WO 2014153822 A1 WO2014153822 A1 WO 2014153822A1 CN 2013075922 W CN2013075922 W CN 2013075922W WO 2014153822 A1 WO2014153822 A1 WO 2014153822A1
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WIPO (PCT)
Prior art keywords
pixel
control signal
timing control
pixel point
point
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PCT/CN2013/075922
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French (fr)
Chinese (zh)
Inventor
段欣
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京东方科技集团股份有限公司
北京京东方显示技术有限公司
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Publication of WO2014153822A1 publication Critical patent/WO2014153822A1/en

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/34Control 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
    • G09G3/36Control 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
    • G09G3/3611Control of matrices with row and column drivers
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/08Details of timing specific for flat panels, other than clock recovery
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0223Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes

Definitions

  • Driving control unit for display substrate, driving circuit and driving control method
  • the invention belongs to the technical field of display, and in particular to a driving control unit, a driving circuit and a driving control method for a display substrate. Background technique
  • a conventional liquid crystal panel driving architecture includes a source driver and a gate driver.
  • the source driver and the gate driver drive pixels at different positions of the panel, the timing control signals are consistent, that is, the near and far points from the source driver and the gate driver, and the pixels use the same timing control signal.
  • the gate driver drives the pixel points of each row, the time at which the deflection voltage is applied to the data line is fixed, and the time at which the pixel points at different positions in the same row of pixels are turned on is fixed.
  • the present disclosure provides a driving control unit, a driving circuit, and a driving control method for a display substrate that adjusts timing control signals of respective pixels on a panel according to pixel position to improve picture consistency.
  • a driving control unit for a display substrate including a timing controller and a delay controller, wherein: the timing controller is configured to send a timing control signal to the delay controller; The delay controller is configured to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, so that an actual charging duration of the pixel point is within a preset duration.
  • the delay controller is configured to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, which is:
  • the delay controller adjusts the timing control signal according to a length and a resistivity of a driving signal line connected between the pixel point and the pixel display driver.
  • the delay controller is configured to adjust the timing control signal in the following manner:
  • the difference between the impedances of the driving signal lines connected between the pixels display drivers is used to adjust the delay time of the timing control signals of the second pixel points with respect to the first pixel point timing control signals.
  • the first pixel point is a pixel point farthest from the pixel display driver on the display panel, which is called a pixel far point; and the second pixel point is other than the far point of the pixel on the display panel. Any pixel point.
  • the delay controller is configured to adjust the timing control signal in the following manner:
  • the delay controller is configured to adjust the timing control signal in the following manner:
  • the timing control signal is adjusted to make the delay time of the timing control signal of the second pixel point proportional to the magnitude of the difference of the impedance, based on the timing control signal of the first pixel on the display panel.
  • the pixel display driver refers to a gate driver or a source driver.
  • the preset duration includes a preset duration value.
  • a driving circuit for a display substrate includes the above-described driving control unit.
  • the driving device of the display substrate includes a timing controller and a delay controller; the method includes:
  • timing controller to send a timing control signal to the delay controller; and causing the delay controller to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, so that The actual charging duration of the pixel is within a preset duration.
  • the delay controller adjusts the timing control signal, including: displaying, according to a timing control signal of the first pixel on the display panel, according to the second pixel on the display panel and the pixel Adjusting the timing control signal of the second pixel point relative to the difference between the impedance of the driving signal line connected between the drivers and the impedance of the driving signal line connected between the first pixel point and the pixel display driver The delay time of the first pixel point timing control signal.
  • the timing control signal is a gate driver control signal, the gate driver control signal controls a thin film transistor turn-on time of a pixel, and the delay controller adjusts the thin film transistor turn-on time to adjust the a delay time of the timing control signal of the second pixel relative to the first pixel point timing control signal; or, the timing control signal is a source driver control signal, and the source driver control signal controls a deflection voltage of the pixel point Loading time, the delay controller adjusts a delay time of the timing control signal of the second pixel relative to the first pixel point timing control signal by adjusting the deflection voltage loading time.
  • the timing control signal is a pulse signal.
  • the step of adjusting the timing control signal by the delay controller is: using a timing control signal of the first pixel on the display substrate as a reference, according to the second pixel on the display substrate and the pixel Adjusting a difference between an impedance of a driving signal line connected between the drivers and an impedance of a driving signal line connected between the first pixel and the pixel display driver to adjust a timing control signal of the second pixel relative to The delay time of the timing control signal at the first pixel point.
  • the first pixel point is a pixel point farthest from the pixel display driver on the display panel, which is called a pixel far point; and the second pixel point is other than the far point of the pixel on the display panel. Any pixel point.
  • the delay controller is configured to adjust the timing control signal in the following manner:
  • the signal is a reference, and the delay time of the timing control signal of the second pixel in the same column as the first pixel is adjusted.
  • the delay controller is configured to adjust the timing control signal in the following manner:
  • the timing control signal is adjusted to make the delay time of the timing control signal of the second pixel point proportional to the magnitude of the difference of the impedance, based on the timing control signal of the first pixel on the display panel.
  • the exemplary embodiment of the present invention changes the timing control signal of the pixel according to the position of the pixel on the liquid crystal panel, so that the timing control signals of the pixels at different positions are different, and the signals are controlled with different timings to compensate the charging time due to the delay of the signal line.
  • the error ensures the consistency of the pixel charging effect at different positions of the liquid crystal panel.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal panel
  • FIG. 2 is a schematic diagram of input and output of a gate driver control signal and a source driver control signal of a delay controller according to an embodiment of the present invention
  • FIG. 3 is a comparison diagram of delay times of gate driver signal lines at three points A, B, and C on the liquid crystal panel of FIG. 1;
  • FIG. 4 is a comparison diagram of delay times of source driver signal lines of three points A, D, and E on the liquid crystal panel of FIG. 1;
  • Figure 5 is a comparison diagram of the actual charging time of the three points A, B, and C after adjustment by the delay controller;
  • Figure 6 is a comparison of the actual charging time of the three points A, D and E after adjustment by the delay controller.
  • the embodiment provides an embodiment of a drive control unit for a display substrate, the drive control unit including a timing controller and a delay controller, wherein:
  • the timing controller is configured to send a timing control signal to the delay controller; the delay controller is configured to: adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate , so that the actual charging duration of the pixel is within a preset duration.
  • the delay controller adjusts the timing control signal according to the impedance of the driving signal line connected to the pixel of the display substrate, so that the actual charging duration of each pixel point tends to be consistent. That is, it is a preset charging duration value, or has an acceptable error range with the preset charging duration value, that is, within a preset duration.
  • the signal is controlled with different timings, the difference in charging time is compensated, and the consistency of the charging effect of the pixels at different positions on the display substrate is ensured.
  • the embodiment also provides a driving circuit for the display substrate, including the driving control unit as described above.
  • the embodiment of the present invention is not limited to the liquid crystal display panel, and can be applied to other types of display substrates using the thin film transistor array substrate;
  • the pixel display driver can be a gate driver or a source driver.
  • the impedance difference on the gate line is large, only the delay of the gate driving signal is compensated, which can solve the problem that the pixel display effect is uneven due to the difference of the charging delay; similarly, when the impedance difference on the data line is different
  • the delays of the gate driver and the source driving signal are compensated, and the Solve the problem well, and specifically the order of compensation for each pixel, the selection of the pixel to be compensated (all compensation or part)
  • the manner of compensation, and which pixel points are compensated for is not limited, and all the methods covered can solve the above technical problems, and thus the technical solutions covered by them are within the protection scope
  • a liquid crystal panel is selected as an exemplary embodiment of a display substrate; a source driver 1 and a gate driver 2 are selected as an example of the pixel display driver Embodiments; and, the enumerated pixel compensation sequence and execution steps are described, but the embodiments of the present invention are not limited to these sequences and steps.
  • FIG. 1 is a schematic structural view of a conventional liquid crystal panel.
  • the liquid crystal panel includes a source driver 1, a gate driver 2, and a plurality of pixel points.
  • the control signal output from the gate driver 2 controls the thin film transistor turn-on time of each pixel.
  • the control signal output from the source driver 1 controls the deflection voltage loading time of each pixel.
  • the delay time of the thin film transistor at each point is different due to the delay of the gate driver 2 control signal on the glass substrate trace.
  • tl > t 2 > t 3 If the source driver 1 control signal is unchanged, the actual charging time of the three points A, B, and C will be different, resulting in different charging levels of the three pixel positions.
  • the delay time of the three-point deflection voltage of the A, D, and E is different due to the delay of the control signal of the source driver 1 on the glass substrate. As shown in Fig.
  • the gate control signal and the source control signal are signals sent by the original timing controller, and the gate control signal and the source control signal are signals adjusted by the delay controller.
  • the gate control signal charges each row of pixels corresponding to one pulse, and the low level is the time when the gate is turned on, and the time of the low level is adjusted by the delay controller to change the pixel gate turn-on time of different rows.
  • Each pulse of the source control signal corresponds to the time when the pixel deflection voltage is loaded, and the delay signal is used to advance or delay the pulse signal to control when the pixel deflection voltage is applied to both ends of the liquid crystal.
  • the original gate control signal enters the delay controller, divides it into a delay unit signal with a small pulse width, and sets a delay unit signal that needs to be superimposed in each line through an internal register. The number of times, through the internal timing signal superposition, achieves the purpose of separately controlling the timing signals of different rows. Similarly, the delay control principle of the source control signal can be obtained. After the signal adjusted by the delay controller, as shown in Figures 5 and 6, the actual charging times of the three points A, B, and C and D, E are the same.
  • the delay controller adjusts based on the timing control signal of the far point F of the pixel farthest from the source driver and the gate driver on the liquid crystal panel.
  • the optional adjustment manner is as follows: according to the difference between the impedance of the driving signal line connected between the second pixel point on the display substrate and the pixel display driver and the impedance of the driving signal line connected between the first pixel point and the pixel display driver, Adjusting the pixel in the same row as the pixel far point F according to the difference between the impedance of the driving signal line connected between the pixel far point F and the source driver and the impedance of the driving signal line connected between the pixel point of the same row and the source driver.
  • the delay time of the timing control signal of the point, the impedance difference between the pixel point E and the pixel far point F is the largest, and the delay time of the timing control signal of the column where the pixel point E is located needs to be adjusted, so that the timing control signal of the column of the pixel point E is late.
  • the timing control signal is output at the column where the pixel far point F is located, thereby compensating for the delay between the pixel points E and F due to the gate driver control signal on the glass substrate trace.
  • the impedance difference between the pixel point between the pixel points E and F and the pixel point F is smaller than the impedance difference between the pixel point E and the pixel point F, so the required delay compensation is also relatively small, and the delay of the timing control signal is required.
  • the late time is adjusted in proportion to the magnitude of the impedance difference between the other pixels of the same line from the pixel far point F;
  • the delay time of the timing control signal of the pixel in the same column as the pixel far point F is adjusted, and the impedance difference between the pixel point C and the pixel far point F is The maximum, the delay time of the timing control signal of the row where the pixel C is located needs to be adjusted, so that the timing control signal of the row where the pixel C is located is later than the timing control signal of the row where the pixel far point F is located, thereby compensating between the pixel points C and F. Due to the delay of the source driver control signal on the glass substrate trace.
  • the difference between the impedance between the pixel points C and F and the pixel point F is smaller than the impedance difference between the pixel point C and the pixel point F, so the required delay compensation is relatively small, and the delay time of the signal is controlled according to the timing. It is adjusted in proportion to the magnitude of the impedance difference between other pixel points of the same line from the pixel far point F.
  • the final adjustment to the charging time of all the pixels is basically the same as the far-point F charging time of the pixel, and the adjustment is completed.
  • the above adjustment mode is merely an exemplary embodiment, and the embodiment of the present invention is not limited to this adjustment mode.
  • it is not limited to adjusting only the timing control signal of the F point as a reference, and other pixel points may be selected for adjustment, as long as the charging time of all the pixels or most of the pixels in the panel is adjusted to be the same or substantially the same. can.
  • It is also not limited to adjusting all the pixels as long as an acceptable consistency effect can be achieved, and the degree of consistency can be controlled as needed by those skilled in the art.
  • the present embodiment is not limited to comparing pixel points in the upper left corner with pixel points in the lower right corner, as long as it is due to grid lines or The two pixel points of the data line whose trace impedance and the scanning sequence are different in charging time can be compared to adjust the charging time, and finally the purpose of adjusting the pixel charging time of the panel is achieved. , thereby improving the consistency of the display and improving the display effect.
  • the following embodiment is a case where adjustment is performed when different adjustment orders are selected and different pixel points are selected as reference points.
  • the delay controller is separated from the source on the liquid crystal panel. Timing control of the farthest pixel farthing point F of the driver and gate driver Based on the signal, the delay time of the timing control signal of the pixel in the same column as the pixel far point F is adjusted according to the magnitude of the impedance difference between the pixel far point F and the pixel in the same column.
  • the impedance difference between the pixel point C and the pixel far point F is the largest, and the delay time of the timing control signal of the row where the pixel point C is needed needs to be adjusted, so that the timing control signal of the row where the pixel point C is located is later than the timing control of the row where the pixel far point F is located.
  • the signal is output to compensate for the delay between pixel points C and F due to the source driver control signal on the glass substrate trace.
  • the difference between the impedance between the pixel points C and F and the pixel point F is smaller than the difference between the impedance between the pixel point C and the pixel point F, so the required delay compensation is relatively small, and the gate driver control signal is required.
  • the delay time is adjusted in proportion to the difference in impedance between the pixel far point F and the other pixels in the same row. Then, according to the difference between the pixel far point F and the impedance of the pixel in the same row, the delay time of the timing control signal of the pixel in the same row as the far point of the pixel is adjusted, and the difference between the pixel point E and the pixel far point F is the largest.
  • the delay time of the timing control signal of the column in which the pixel point E is located needs to be adjusted, so that the timing control signal of the column where the pixel point E is located is later than the timing driver control signal output of the column where the pixel far point F is located, thereby compensating between the pixel points E and F.
  • the difference between the impedance between the pixel points E and F and the pixel point F is smaller than the difference between the impedance between the pixel point E and the pixel point F, so the required delay compensation is relatively small, and the delay of the signal is controlled according to the timing.
  • the time is proportional to the difference in the impedance between the other pixels of the same line from the far point of the pixel.
  • the final adjustment to the charging time of all the pixels is basically the same as the pixel far-point F charging time, and the adjustment is completed.
  • the delay controller adjusts and lines each line according to the difference between the impedance of the pixel point C and the pixel A and B of the same row on the same row of the liquid crystal panel, based on the timing control signal of the pixel C which is farthest from the gate driver in the same row.
  • the difference between the impedance of the pixel A and the pixel C is the largest, and the delay time of the timing control signal of the column where the pixel A is located needs to be adjusted, so that the timing control signal of the column of the pixel A is later than the timing control signal of the column of the pixel C.
  • the output is thereby compensated for the delay between the pixel points A and C due to the gate driver control signal on the glass substrate trace.
  • the difference between the impedance between the pixel points A, C (for example, point B in FIG. 1) and the pixel point C is smaller than the difference between the impedance between the pixel point A and the pixel point C, and thus the required delay compensation
  • the repayment is relatively small, and the delay time of the timing control signal is adjusted in proportion to the magnitude of the impedance difference between the pixel points C and other pixels in the same row.
  • other lines on the LCD panel are also adjusted according to the above steps. Then, the delay time of the timing control signal is adjusted according to the difference between the impedance of the other row on the last row of the liquid crystal panel.
  • the last row of the liquid crystal panel has the largest impedance difference between the first row on the liquid crystal panel, and the timing control signal of the first row needs to be adjusted later than the timing control signal output of the last row, thereby compensating for the source between the first row and the last row.
  • the delay of the pole driver control signal on the glass substrate trace.
  • the impedance difference between the line between the first line and the last line and the last line is smaller than the impedance difference between the first line and the last line, so the required delay compensation is also relatively small, and the delay time of the timing control signal and the liquid crystal are required.
  • the difference between the last row on the panel and the impedance of the other rows is proportional to the magnitude of the difference.
  • the delay controller is based on the timing control signal of the pixel column E of the same column farthest from the source driver on the liquid crystal panel, and is adjusted according to the difference between the impedance of the pixel point E and the pixel A and D of the same column.
  • the impedance difference between the pixel A and the pixel E is the largest, and the delay time of the timing control signal of the row where the pixel A is located needs to be adjusted, so that the timing control signal of the row where the pixel A is located is later than the timing control signal output of the row where the pixel E is located.
  • the difference between the impedance between the pixel points A and E (for example, point D in Fig. 1) and the pixel point E is smaller than the difference between the impedance between the pixel point A and the pixel point E, so the delay compensation required is also Relatively small, it is necessary to adjust the delay time of the timing control signal in proportion to the difference between the impedances of the pixel points E and other pixels in the same column. Similarly, the other columns on the LCD panel are also adjusted according to the above steps.
  • the delay time of the timing control signal is adjusted.
  • the difference between the impedances of the first column of the liquid crystal panel and the first column of the liquid crystal panel is the largest, and the first column needs to be adjusted.
  • the timing control signal is later than the timing control signal output of the last column, thereby compensating for the delay between the first column and the last column due to the gate driver control signal on the glass substrate trace.
  • the difference between the impedance between the column between the first column and the last column and the last column is less than The difference between the impedances of the first column and the last column, so the required delay compensation is relatively small, and the delay time of the source driver control signal is proportional to the difference between the impedance of the last column on the liquid crystal panel and the other columns. Make adjustments. Finally, the charging time of all the pixels on the liquid crystal panel is basically the same, and the adjustment is completed.

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Abstract

The present invention relates to the technical field of displays. Disclosed are a drive control unit, drive circuit, and drive control method of a display substrate, comprising a timing sequence controller and a delay controller. The timing sequence controller sends a timing sequence control signal to the delay controller; the delay controller adjusts the timing sequence signal according to the impedance of a drive signal line connected by pixels of the display substrate, allowing the actual charging time of the pixels to be within a preset time range. The timing sequence control signal of the pixels is changed according to the position of the pixels on a liquid crystal panel, such that the timing sequence control signals of the pixels at different positions differ from one another. Different timing sequence control signals compensate for the charging time error caused by delays on the signal line, thereby ensuring a consistent charging effect for the pixels at different positions on the liquid crystal panel.

Description

显示基板的驱动控制单元、 驱动电路及驱动控制方法  Driving control unit for display substrate, driving circuit and driving control method
技术领域 Technical field
本发明属于显示技术领域, 尤指一种显示基板的驱动控制单元、 驱动电路及驱动控制方法。 背景技术  The invention belongs to the technical field of display, and in particular to a driving control unit, a driving circuit and a driving control method for a display substrate. Background technique
传统的液晶面板驱动架构包括源极驱动器和栅极驱动器。 源极 驱动器和栅极驱动器在驱动面板不同位置的像素时, 采用的时序控 制信号是一致的, 即, 距离源极驱动器和栅极驱动器的近点与远点, 像素点采用相同的时序控制信号。 当栅极驱动器对每一行的像素点 驱动时, 数据线上加载偏转电压的时间是固定的, 并且同一行像素 点中不同位置的像素点开启的时间是固定的。  A conventional liquid crystal panel driving architecture includes a source driver and a gate driver. When the source driver and the gate driver drive pixels at different positions of the panel, the timing control signals are consistent, that is, the near and far points from the source driver and the gate driver, and the pixels use the same timing control signal. . When the gate driver drives the pixel points of each row, the time at which the deflection voltage is applied to the data line is fixed, and the time at which the pixel points at different positions in the same row of pixels are turned on is fixed.
由于液晶面板工艺特性限制, 连接近点与远点的信号线之间存 在一定的阻抗,导致在栅极驱动器和源极驱动器加载同样的信号时, 在近点的表现, 与远点经过信号线延迟之后的表现不一致, 致使近 点与远点采用同样的时序控制信号时, 像素点的实际充电时间并不 相同, 导致在面板上不同位置的像素点充电效果不同, 画面一致性 受到影响。 在大尺寸面板中, 由于信号线存在的阻抗更大, 该问题 会更加明显。 而且, 不仅是液晶面板, 利用薄膜晶体管阵列的其他 类型的显示基板也存在这样的问题。 发明内容  Due to the limitation of the process characteristics of the liquid crystal panel, there is a certain impedance between the signal line connecting the near point and the far point, resulting in the performance of the near point when the gate driver and the source driver are loaded with the same signal, and the far point passing the signal line. The performance after the delay is inconsistent. When the same timing control signal is used for the near point and the far point, the actual charging time of the pixel is not the same, resulting in different pixel charging effects at different positions on the panel, and the screen consistency is affected. In large-sized panels, this problem is more pronounced due to the greater impedance of the signal lines. Moreover, not only liquid crystal panels, but also other types of display substrates using thin film transistor arrays have such problems. Summary of the invention
针对现有技术存在的问题,本公开提供一种根据像素点位置调整 面板上各像素点的时序控制信号,以提高画面一致性的显示基板的驱 动控制单元、 驱动电路及驱动控制方法。  In view of the problems existing in the prior art, the present disclosure provides a driving control unit, a driving circuit, and a driving control method for a display substrate that adjusts timing control signals of respective pixels on a panel according to pixel position to improve picture consistency.
按照本发明的一个方面, 提供一种显示基板的驱动控制单元, 包 括时序控制器和延时控制器, 其中: 所述时序控制器用于向所述延时控制器发送时序控制信号; 所述延时控制器用于根据所述显示基板的像素点所连接的驱动 信号线的阻抗, 来调节所述时序控制信号, 使像素点的实际充电时长 处于预设的时长范围内。 According to an aspect of the present invention, a driving control unit for a display substrate is provided, including a timing controller and a delay controller, wherein: the timing controller is configured to send a timing control signal to the delay controller; The delay controller is configured to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, so that an actual charging duration of the pixel point is within a preset duration.
可选择地,所述延时控制器用于根据所述显示基板的像素点所连 接的驱动信号线的阻抗, 来调节所述时序控制信号, 是指:  Optionally, the delay controller is configured to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, which is:
所述延时控制器根据所述像素点与像素显示驱动器之间所连接 的驱动信号线的长度和电阻率, 来调节所述时序控制信号。  The delay controller adjusts the timing control signal according to a length and a resistivity of a driving signal line connected between the pixel point and the pixel display driver.
可选择地,所述延时控制器是用于按以下方式调节所述时序控制 信号:  Optionally, the delay controller is configured to adjust the timing control signal in the following manner:
以显示面板上第一像素点的时序控制信号为基准,根据所述显示 面板上的第二像素点与所述像素显示驱动器间所连接的驱动信号线 的阻抗与所述第一像素点与所述像素显示驱动器间所连接的驱动信 号线的阻抗的差值,来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。  Taking the impedance of the driving signal line connected between the second pixel point on the display panel and the pixel display driver and the first pixel point and the reference based on the timing control signal of the first pixel on the display panel The difference between the impedances of the driving signal lines connected between the pixels display drivers is used to adjust the delay time of the timing control signals of the second pixel points with respect to the first pixel point timing control signals.
可选择地,所述第一像素点为显示面板上距离像素显示驱动器最 远的像素点, 称为像素远点; 所述第二像素点为所述显示面板上除所 述像素远点以外的任意像素点。  Optionally, the first pixel point is a pixel point farthest from the pixel display driver on the display panel, which is called a pixel far point; and the second pixel point is other than the far point of the pixel on the display panel. Any pixel point.
可选择地,所述延时控制器是用于按以下方式调节所述时序控制 信号:  Optionally, the delay controller is configured to adjust the timing control signal in the following manner:
以所述像素远点的时序控制信号为基准,先调节与像素远点同一 行的第二像素点的时序控制信号的延迟时间,后调节与所述像素远点 同一列的第二像素点的时序控制信号的延迟时间。  Adjusting, according to the timing control signal of the far point of the pixel, a delay time of the timing control signal of the second pixel point in the same row as the far point of the pixel, and then adjusting the second pixel point of the same column as the far point of the pixel The delay time of the timing control signal.
可选择地,所述延时控制器是用于按以下方式调节所述时序控制 信号:  Optionally, the delay controller is configured to adjust the timing control signal in the following manner:
以显示面板上第一像素点的时序控制信号为基准,调节所述时序 控制信号使所述第二像素点的时序控制信号的延迟时间与所述阻抗 的差值大小成正比。  The timing control signal is adjusted to make the delay time of the timing control signal of the second pixel point proportional to the magnitude of the difference of the impedance, based on the timing control signal of the first pixel on the display panel.
可选择地, 所述像素显示驱动器是指栅极驱动器或源极驱动器。 可选择地, 所述预设的时长范围内包括一个预设时长值。  Alternatively, the pixel display driver refers to a gate driver or a source driver. Optionally, the preset duration includes a preset duration value.
本发明实施例的显示基板的驱动电路, 包括上述驱动控制单元。 本发明实施例的显示基板的驱动控制方法,所述显示基板的驱动 装置中包括时序控制器和延时控制器; 所述方法包括: A driving circuit for a display substrate according to an embodiment of the present invention includes the above-described driving control unit. In the driving control method of the display substrate of the embodiment of the invention, the driving device of the display substrate includes a timing controller and a delay controller; the method includes:
令所述时序控制器向所述延时控制器发送时序控制信号; 令所述延时控制器根据所述显示基板的像素点所连接的驱动信 号线的阻抗来调节所述时序控制信号,使像素点的实际充电时长处于 预设的时长范围内。  And causing the timing controller to send a timing control signal to the delay controller; and causing the delay controller to adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate, so that The actual charging duration of the pixel is within a preset duration.
可选择地, 所述延时控制器调节所述时序控制信号, 包括: 以显示面板上第一像素点的时序控制信号为基准,根据所述显示 面板上的第二像素点与所述像素显示驱动器间所连接的驱动信号线 的阻抗与所述第一像素点与所述像素显示驱动器间所连接的驱动信 号线的阻抗的差值,来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。  Optionally, the delay controller adjusts the timing control signal, including: displaying, according to a timing control signal of the first pixel on the display panel, according to the second pixel on the display panel and the pixel Adjusting the timing control signal of the second pixel point relative to the difference between the impedance of the driving signal line connected between the drivers and the impedance of the driving signal line connected between the first pixel point and the pixel display driver The delay time of the first pixel point timing control signal.
可选择地, 所述时序控制信号为栅极驱动器控制信号, 所述栅极 驱动器控制信号控制像素点的薄膜晶体管开启时间,所述延时控制器 通过调节所述薄膜晶体管开启时间来调节所述第二像素点的时序控 制信号相对于所述第一像素点时序控制信号的延迟时间; 或者, 所述时序控制信号为源极驱动器控制信号,所述源极驱动器控制 信号控制像素点的偏转电压加载时间,所述延时控制器通过调节所述 偏转电压加载时间来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。  Optionally, the timing control signal is a gate driver control signal, the gate driver control signal controls a thin film transistor turn-on time of a pixel, and the delay controller adjusts the thin film transistor turn-on time to adjust the a delay time of the timing control signal of the second pixel relative to the first pixel point timing control signal; or, the timing control signal is a source driver control signal, and the source driver control signal controls a deflection voltage of the pixel point Loading time, the delay controller adjusts a delay time of the timing control signal of the second pixel relative to the first pixel point timing control signal by adjusting the deflection voltage loading time.
可选择地, 所述时序控制信号为脉沖信号。  Optionally, the timing control signal is a pulse signal.
可选择地, 所述延时控制器调节所述时序控制信号的步骤为: 以 显示基板上第一像素点的时序控制信号为基准,根据所述显示基板上 的第二像素点与所述像素显示驱动器间所连接的驱动信号线的阻抗 与所述第一像素点与所述像素显示驱动器间所连接的驱动信号线的 阻抗的差值,来调节所述第二像素点的时序控制信号相对于所述第一 像素点时序控制信号的延迟时间。  Optionally, the step of adjusting the timing control signal by the delay controller is: using a timing control signal of the first pixel on the display substrate as a reference, according to the second pixel on the display substrate and the pixel Adjusting a difference between an impedance of a driving signal line connected between the drivers and an impedance of a driving signal line connected between the first pixel and the pixel display driver to adjust a timing control signal of the second pixel relative to The delay time of the timing control signal at the first pixel point.
可选择地,所述第一像素点为显示面板上距离像素显示驱动器最 远的像素点, 称为像素远点; 所述第二像素点为所述显示面板上除所 述像素远点以外的任意像素点。 可选择地, 所述延时控制器是用于按以下方式调节所述时序控 制信号: Optionally, the first pixel point is a pixel point farthest from the pixel display driver on the display panel, which is called a pixel far point; and the second pixel point is other than the far point of the pixel on the display panel. Any pixel point. Optionally, the delay controller is configured to adjust the timing control signal in the following manner:
以所述第一像素点的时序控制信号为基准,先调节与第一像素点 同一行的第二像素点的时序控制信号的延迟时间; 和 /或, 以所述第 一像素点的时序控制信号为基准,调节与所述第一像素点同一列的第 二像素点的时序控制信号的延迟时间。  Adjusting, according to the timing control signal of the first pixel, a delay time of a timing control signal of a second pixel in the same row as the first pixel; and/or controlling timing of the first pixel The signal is a reference, and the delay time of the timing control signal of the second pixel in the same column as the first pixel is adjusted.
可选择地,所述延时控制器是用于按以下方式调节所述时序控制 信号:  Optionally, the delay controller is configured to adjust the timing control signal in the following manner:
以显示面板上第一像素点的时序控制信号为基准,调节所述时序 控制信号使所述第二像素点的时序控制信号的延迟时间与所述阻抗 的差值大小成正比。  The timing control signal is adjusted to make the delay time of the timing control signal of the second pixel point proportional to the magnitude of the difference of the impedance, based on the timing control signal of the first pixel on the display panel.
本发明示例性实施例根据液晶面板上像素点的位置改变像素点 的时序控制信号, 使不同位置像素的时序控制信号各不相同, 以不同 的时序控制信号, 补偿由于信号线延迟造成的充电时间误差, 保证液 晶面板不同位置的像素充电效果一致性。 附图说明  The exemplary embodiment of the present invention changes the timing control signal of the pixel according to the position of the pixel on the liquid crystal panel, so that the timing control signals of the pixels at different positions are different, and the signals are controlled with different timings to compensate the charging time due to the delay of the signal line. The error ensures the consistency of the pixel charging effect at different positions of the liquid crystal panel. DRAWINGS
图 1为现有液晶面板的结构示意图;  1 is a schematic structural view of a conventional liquid crystal panel;
图 2为本发明实施方式所提供的延时控制器的栅极驱动器控制信 号、 源极驱动器控制信号的输入、 输出示意图;  2 is a schematic diagram of input and output of a gate driver control signal and a source driver control signal of a delay controller according to an embodiment of the present invention;
图 3为图 1中液晶面板上 A、 B、 C三点的栅极驱动器信号线的延迟 时间对比图;  3 is a comparison diagram of delay times of gate driver signal lines at three points A, B, and C on the liquid crystal panel of FIG. 1;
图 4为图 1中液晶面板上 A、 D、 E三点的源极驱动器信号线的延迟 时间对比图;  4 is a comparison diagram of delay times of source driver signal lines of three points A, D, and E on the liquid crystal panel of FIG. 1;
图 5为经过延时控制器调节之后 A、 B、 C三点的实际充电时间对比 图;  Figure 5 is a comparison diagram of the actual charging time of the three points A, B, and C after adjustment by the delay controller;
图 6为经过延时控制器调节之后 A、 D、 E三点的实际充电时间对比 图。  Figure 6 is a comparison of the actual charging time of the three points A, D and E after adjustment by the delay controller.
具体实施方式 detailed description
下面结合附图和实施例,对本发明的具体实施方式作进一步详细 描述。 以下示例性实施例仅用于说明本发明原理, 但不限制本发明的 范围。 The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Description. The following exemplary embodiments are merely illustrative of the principles of the invention, but are not intended to limit the scope of the invention.
本实施方式提供一种显示基板的驱动控制单元的实施例,该驱动 控制单元包括时序控制器和延时控制器, 其中:  The embodiment provides an embodiment of a drive control unit for a display substrate, the drive control unit including a timing controller and a delay controller, wherein:
所述时序控制器用于向所述延时控制器发送时序控制信号; 所述延时控制器用于:根据所述显示基板的像素点所连接的驱动 信号线的阻抗, 来调节所述时序控制信号, 使像素点的实际充电时长 处于预设的时长范围内。  The timing controller is configured to send a timing control signal to the delay controller; the delay controller is configured to: adjust the timing control signal according to an impedance of a driving signal line connected to a pixel point of the display substrate , so that the actual charging duration of the pixel is within a preset duration.
由于显示基板上的像素点排列位置的不同,导致其与像素显示驱 动器之间的驱动信号线的长短不同, 或者因金属材料、构图设计等因 素造成的电阻率差异,使得不同的像素点所连接的驱动信号线上的阻 抗不同, 因此不同的像素点获得的充电信号的延迟时间不同, 最终导 致显示效果不一致。 而本实施例中, 所述延时控制器根据所述显示基 板的像素点所连接的驱动信号线的阻抗,来对所述时序控制信号进行 调节, 使各像素点的实际充电时长趋于一致, 即, 均为一个预设的充 电时长值, 或者与该预设的充电时长值有可接受的误差范围, 即, 处 于预设的时长范围内。  Due to the difference in the arrangement positions of the pixel dots on the display substrate, the length of the driving signal line between the pixel and the pixel display driver is different, or the difference in resistivity caused by factors such as the metal material and the pattern design causes the different pixel points to be connected. The impedance of the driving signal line is different, so the delay time of the charging signal obtained by different pixel points is different, and finally the display effect is inconsistent. In this embodiment, the delay controller adjusts the timing control signal according to the impedance of the driving signal line connected to the pixel of the display substrate, so that the actual charging duration of each pixel point tends to be consistent. That is, it is a preset charging duration value, or has an acceptable error range with the preset charging duration value, that is, within a preset duration.
由此, 以不同的时序控制信号, 补偿了充电时间差异, 保证了显 示基板上不同位置的像素充电效果的一致性。  Thereby, the signal is controlled with different timings, the difference in charging time is compensated, and the consistency of the charging effect of the pixels at different positions on the display substrate is ensured.
本实施方式还提供一种显示基板的驱动电路,包括如上所述的驱 动控制单元。  The embodiment also provides a driving circuit for the display substrate, including the driving control unit as described above.
需要说明的是, 本发明的实施方式不限于液晶显示面板, 还可应 用于其他类型的使用薄膜晶体管阵列基板的显示基板;所述像素显示 驱动器可以为栅极驱动器也可以为源极驱动器, 当栅线上的阻抗差异 较大时, 仅对栅极驱动信号的延迟进行补偿, 是可以解决因充电延迟 差异造成的像素显示效果不均的问题的; 同理, 当数据线上的阻抗差 异较大时, 仅对源极驱动信号的延迟进行补偿, 也可以解决因充电延 迟差异造成的像素显示效果不均的问题; 当然, 对栅极驱动器和源极 驱动信号的延迟都进行补偿, 能够更好地解决该问题, 且具体对各像 素点进行补偿的顺序、 所要补偿的像素点的选择 (全部补偿还是部分 补偿, 以及补偿哪些像素点)的方式不限, 所涵盖的所有方式均能够 解决上述技术问题,因此其所涵盖的技术方案均在本发明权利要求的 保护范围之内。 It should be noted that the embodiment of the present invention is not limited to the liquid crystal display panel, and can be applied to other types of display substrates using the thin film transistor array substrate; the pixel display driver can be a gate driver or a source driver. When the impedance difference on the gate line is large, only the delay of the gate driving signal is compensated, which can solve the problem that the pixel display effect is uneven due to the difference of the charging delay; similarly, when the impedance difference on the data line is different When the time is large, only the delay of the source driving signal is compensated, and the problem that the pixel display effect is uneven due to the difference in charging delay can be solved; of course, the delays of the gate driver and the source driving signal are compensated, and the Solve the problem well, and specifically the order of compensation for each pixel, the selection of the pixel to be compensated (all compensation or part) The manner of compensation, and which pixel points are compensated for, is not limited, and all the methods covered can solve the above technical problems, and thus the technical solutions covered by them are within the protection scope of the claims of the present invention.
下面描述列举的本发明所应用的各种情况的示例性实施例, 其 中, 选择液晶面板作为显示基板的示例性实施例; 选择源极驱动器 1 和栅极驱动器 2作为所述像素显示驱动器的示例性实施例; 并且, 对 列举的像素补偿顺序和执行步骤进行介绍,但本发明实施方式不限于 这些顺序和步骤。  Exemplary embodiments of various cases to which the present invention is applied are described below, wherein a liquid crystal panel is selected as an exemplary embodiment of a display substrate; a source driver 1 and a gate driver 2 are selected as an example of the pixel display driver Embodiments; and, the enumerated pixel compensation sequence and execution steps are described, but the embodiments of the present invention are not limited to these sequences and steps.
图 1为现有的液晶面板的结构示意图。 如图 1所示, 液晶面板包括 源极驱动器 1、 栅极驱动器 2和多个像素点。 栅极驱动器 2输出的控制 信号控制每一个像素点的薄膜晶体管开启时间。 源极驱动器 1输出的 控制信号控制每一个像素点的偏转电压加载时间。通过控制源极驱动 器 1输出的控制信号和栅极驱动器 2输出的控制信号的时机(如, 像素 点的开启时间,或像素点的开启时间与对应像素点的偏转电压加载时 间的重叠时间), 就可以对像素点进行充电。 在不考虑液晶面板上信 号线的阻抗的情况下,在栅极驱动器 2和源极驱动器 1上加载同样的控 制信号时,液晶面板上所有像素点的充电时间均相同,充电效果一致。 但是, 实际中受液晶面板的工艺限制, 连接同一行和同一列像素点之 间的信号线均存在一定的阻抗, 如果在栅极驱动器 2和源极驱动器 1 上加载同样的控制信号,会导致在面板上不同位置的像素点充电效果 不同, 画面一致性受到影响。 在大尺寸面板中, 由于信号线存在的阻 抗更大, 该问题会更加明显。 例如: 如图 1所示, 对于液晶面板上同 一行的 A、 B、 C三个像素点, 由于栅极驱动器 2控制信号在玻璃基板走 线上的延迟, 造成各点的薄膜晶体管开启时间不同, 如图 3所示, 即 t l > t 2> t 3。 如果源极驱动器 1控制信号不变, 会使 A、 B、 C三点的实际 充电时间不同, 致使三个位置像素点的充电程度不同。 同理, 对于液 晶面板上同一列的 A、 D、 E三个像素点, 由于源极驱动器 1控制信号在 玻璃基板走线上的延迟, 造成 A、 D、 E三点偏转电压加载时间不同, 如图 4所示, 即 t4> t 5 > t 6。 如果栅极驱动器 2控制信号不变, 也会使 A、 D、 E三点的实际充电时间不同,致使三个位置像素点的充电程度不同。 如图 2所示, 栅极控制信号与源极控制信号为原始时序控制器发 出的信号, 栅极控制信号, 与源极控制信号, 为经过延时控制器调节 之后的信号。 其中栅极控制信号每个脉沖对应一行的像素充电, 低电 平为栅极开启的时间,通过延时控制器调节低电平的时间从而改变不 同行像素栅极开启时间。源极控制信号每个脉沖对应像素偏转电压加 载的时间, 通过延时控制器提前或延后脉沖信号, 控制像素偏转电压 何时加载到液晶两端。 FIG. 1 is a schematic structural view of a conventional liquid crystal panel. As shown in FIG. 1, the liquid crystal panel includes a source driver 1, a gate driver 2, and a plurality of pixel points. The control signal output from the gate driver 2 controls the thin film transistor turn-on time of each pixel. The control signal output from the source driver 1 controls the deflection voltage loading time of each pixel. By controlling the timing of the control signal output from the source driver 1 and the control signal output from the gate driver 2 (eg, the turn-on time of the pixel, or the overlap time of the pixel point and the deflection voltage loading time of the corresponding pixel), It is possible to charge the pixels. When the same control signal is applied to the gate driver 2 and the source driver 1 regardless of the impedance of the signal line on the liquid crystal panel, the charging time of all the pixels on the liquid crystal panel is the same, and the charging effect is uniform. However, in practice, due to the process limitation of the liquid crystal panel, there is a certain impedance between the signal lines connecting the same row and the pixels in the same column. If the same control signal is loaded on the gate driver 2 and the source driver 1, it may result in The pixel charging effect at different positions on the panel is different, and the screen consistency is affected. In large-sized panels, this problem is more pronounced due to the greater impedance of the signal lines. For example, as shown in FIG. 1 , for the three pixel points A, B, and C in the same row on the liquid crystal panel, the delay time of the thin film transistor at each point is different due to the delay of the gate driver 2 control signal on the glass substrate trace. , as shown in Figure 3, that is, tl > t 2 > t 3 . If the source driver 1 control signal is unchanged, the actual charging time of the three points A, B, and C will be different, resulting in different charging levels of the three pixel positions. Similarly, for the three pixel points A, D, and E in the same column on the liquid crystal panel, the delay time of the three-point deflection voltage of the A, D, and E is different due to the delay of the control signal of the source driver 1 on the glass substrate. As shown in Fig. 4, that is, t4>t5>t6. If the gate driver 2 control signal is unchanged, the actual charging time of the three points A, D, and E will be different, resulting in different charging levels of the three pixel points. As shown in FIG. 2, the gate control signal and the source control signal are signals sent by the original timing controller, and the gate control signal and the source control signal are signals adjusted by the delay controller. The gate control signal charges each row of pixels corresponding to one pulse, and the low level is the time when the gate is turned on, and the time of the low level is adjusted by the delay controller to change the pixel gate turn-on time of different rows. Each pulse of the source control signal corresponds to the time when the pixel deflection voltage is loaded, and the delay signal is used to advance or delay the pulse signal to control when the pixel deflection voltage is applied to both ends of the liquid crystal.
以栅极控制信号为例, 原始的栅极控制信号进入延时控制器中, 将其划分为很小脉沖宽度的延时单元信号,并通过内部寄存器设定每 一行需要叠加的延时单元信号的数量, 通过内部的时序信号叠加, 达 到不同行的时序信号分别控制的目的。同理可得源极控制信号的延时 控制原理。 经过延时控制器调节之后的信号, 如图 5和 6所示, A、 B、 C三点以及 、 D、 E三点的实际充电时间相同。  Taking the gate control signal as an example, the original gate control signal enters the delay controller, divides it into a delay unit signal with a small pulse width, and sets a delay unit signal that needs to be superimposed in each line through an internal register. The number of times, through the internal timing signal superposition, achieves the purpose of separately controlling the timing signals of different rows. Similarly, the delay control principle of the source control signal can be obtained. After the signal adjusted by the delay controller, as shown in Figures 5 and 6, the actual charging times of the three points A, B, and C and D, E are the same.
实施例 1 Example 1
如图 1所示, 如果液晶面板上栅线和数据线的扫描顺序为从左到 右、 从上到下的顺序的话, 液晶面板上最后一行, 最后一列的像素点 As shown in Fig. 1, if the scanning order of the gate lines and the data lines on the liquid crystal panel is from left to right and top to bottom, the last row on the liquid crystal panel, the last column of pixels
F与液晶面板上第一行,第一列的像素点 A的充电时间差异最大。因此, 可选地,延时控制器以液晶面板上相距源极驱动器和栅极驱动器最远 的像素远点 F的时序控制信号为基准, 进行调节。 可选调节方式如下: 根据显示基板上的第二像素点与像素显示驱动器间所连接的驱 动信号线的阻抗与第一像素点与像素显示驱动器间所连接的驱动信 号线的阻抗的差值, 根据像素远点 F与源极驱动器间所连接的驱动信 号线的阻抗与其同一行的像素点与源极驱动器间所连接的驱动信号 线的阻抗的差值调节与像素远点 F同一行的像素点的时序控制信号的 延迟时间, 像素点 E与像素远点 F间的阻抗差值最大, 需要调整像素点 E所在列的时序控制信号的延迟时间,使像素点 E所在列的时序控制信 号晚于像素远点 F所在列的时序控制信号输出, 从而补偿像素点 E和 F 之间由于栅极驱动器控制信号在玻璃基板走线上的延迟。像素点 E、 F 之间的像素点与像素点 F间的阻抗差值小于像素点 E和像素点 F间的阻 抗差值, 因此需要的延迟补偿也相对较小, 需按照时序控制信号的延 迟时间与像素远点 F相距同一行其它像素点间的阻抗差值大小呈正比 关系进行调节; F and the first row on the liquid crystal panel, the charging time of the pixel A of the first column has the largest difference. Therefore, optionally, the delay controller adjusts based on the timing control signal of the far point F of the pixel farthest from the source driver and the gate driver on the liquid crystal panel. The optional adjustment manner is as follows: according to the difference between the impedance of the driving signal line connected between the second pixel point on the display substrate and the pixel display driver and the impedance of the driving signal line connected between the first pixel point and the pixel display driver, Adjusting the pixel in the same row as the pixel far point F according to the difference between the impedance of the driving signal line connected between the pixel far point F and the source driver and the impedance of the driving signal line connected between the pixel point of the same row and the source driver The delay time of the timing control signal of the point, the impedance difference between the pixel point E and the pixel far point F is the largest, and the delay time of the timing control signal of the column where the pixel point E is located needs to be adjusted, so that the timing control signal of the column of the pixel point E is late. The timing control signal is output at the column where the pixel far point F is located, thereby compensating for the delay between the pixel points E and F due to the gate driver control signal on the glass substrate trace. The impedance difference between the pixel point between the pixel points E and F and the pixel point F is smaller than the impedance difference between the pixel point E and the pixel point F, so the required delay compensation is also relatively small, and the delay of the timing control signal is required. The late time is adjusted in proportion to the magnitude of the impedance difference between the other pixels of the same line from the pixel far point F;
然后, 再根据像素远点 F与其同一列的像素点间阻抗差值大小调 节与像素远点 F同一列的像素点的时序控制信号的延迟时间,像素点 C 与像素远点 F间阻抗差值最大,需要调整像素点 C所在行的时序控制信 号的延迟时间,使像素点 C所在行的时序控制信号晚于像素远点 F所在 行的时序控制信号输出,从而补偿像素点 C和 F之间由于源极驱动器控 制信号在玻璃基板走线上的延迟。像素点 C、 F之间的像素点与像素点 F间阻抗的差值小于像素点 C和像素点 F间阻抗差值, 因此需要的延迟 补偿也相对较小, 需按照时序控制信号的延迟时间与像素远点 F距同 一行其它像素点间阻抗差值大小呈正比关系进行调节。最终调节至所 有像素点的充电时间与像素远点 F充电时间基本一致, 则调节完毕。  Then, according to the difference between the pixel far point F and the pixel difference between the pixels in the same column, the delay time of the timing control signal of the pixel in the same column as the pixel far point F is adjusted, and the impedance difference between the pixel point C and the pixel far point F is The maximum, the delay time of the timing control signal of the row where the pixel C is located needs to be adjusted, so that the timing control signal of the row where the pixel C is located is later than the timing control signal of the row where the pixel far point F is located, thereby compensating between the pixel points C and F. Due to the delay of the source driver control signal on the glass substrate trace. The difference between the impedance between the pixel points C and F and the pixel point F is smaller than the impedance difference between the pixel point C and the pixel point F, so the required delay compensation is relatively small, and the delay time of the signal is controlled according to the timing. It is adjusted in proportion to the magnitude of the impedance difference between other pixel points of the same line from the pixel far point F. The final adjustment to the charging time of all the pixels is basically the same as the far-point F charging time of the pixel, and the adjustment is completed.
需说明的是, 上述调节方式仅为示例性的实施例, 本发明的实施 方式并不限于这一种调节方式。 例如, 不限于仅以 F点的时序控制信 号作为基准进行调节, 还可以选择其他的像素点进行调节, 只要将面 板内所有的像素点或者大部分像素点的充电时间调节到相同或基本 一致即可。 也不限于是将所有的像素点都进行调节, 只要能达到可接 受的一致性效果即可,具体的一致性程度本领域技术人员可根据需要 进行控制。由于扫描方式有多种,也不限于从上到下、从左到右扫描, 因此本实施方式也不限于将左上角的像素点和右下角的像素点进行 比对, 只要是因栅线或数据线的走线阻抗、 扫描顺序的先后而导致的 充电时间有差异的两个像素点,都可以进行比对从而对其充电时间进 行调节, 最终实现对面板的像素点充电时间进行调节的目的, 从而提 高显示的一致性, 提升显示效果。  It should be noted that the above adjustment mode is merely an exemplary embodiment, and the embodiment of the present invention is not limited to this adjustment mode. For example, it is not limited to adjusting only the timing control signal of the F point as a reference, and other pixel points may be selected for adjustment, as long as the charging time of all the pixels or most of the pixels in the panel is adjusted to be the same or substantially the same. can. It is also not limited to adjusting all the pixels as long as an acceptable consistency effect can be achieved, and the degree of consistency can be controlled as needed by those skilled in the art. Since there are many scanning methods, and are not limited to scanning from top to bottom and from left to right, the present embodiment is not limited to comparing pixel points in the upper left corner with pixel points in the lower right corner, as long as it is due to grid lines or The two pixel points of the data line whose trace impedance and the scanning sequence are different in charging time can be compared to adjust the charging time, and finally the purpose of adjusting the pixel charging time of the panel is achieved. , thereby improving the consistency of the display and improving the display effect.
以下实施例为选用不同的调节顺序、选用不同的像素点作为基准 点时进行调节的情况。  The following embodiment is a case where adjustment is performed when different adjustment orders are selected and different pixel points are selected as reference points.
实施例 2 Example 2
如图 1所示, 液晶面板上最后一行, 最后一列的像素点 F与液晶面 板上第一行, 第一列的像素点 A的充电时间差异最大, 延时控制器以 液晶面板上相距源极驱动器和栅极驱动器最远的像素远点 F的时序控 制信号为基准, 根据像素远点 F与其同一列的像素点间阻抗差值的大 小调节与像素远点 F同一列的像素点的时序控制信号的延迟时间。 像 素点 C与像素远点 F间阻抗差值最大, 需要调整像素点 C所在行的时序 控制信号的延迟时间, 使像素点 C所在行的时序控制信号晚于像素远 点 F所在行的时序控制信号输出, 从而补偿像素点 C和 F之间由于源极 驱动器控制信号在玻璃基板走线上的延迟。 像素点 C、 F之间的像素点 与像素点 F间阻抗的差值小于像素点 C和像素点 F间阻抗的差值, 因此 需要的延迟补偿也相对较小,需按照栅极驱动器控制信号的延迟时间 与像素远点 F距同一行其它像素点间阻抗的差值大小呈正比关系进行 调节。 然后再根据像素远点 F与其同一行的像素点间阻抗的差值调节 与像素远点同一行的像素点的时序控制信号的延迟时间, 像素点 E相 距像素远点 F间阻抗的差值最大,需要调整像素点 E所在列的时序控制 信号的延迟时间, 使像素点 E所在列的时序控制信号晚于像素远点 F 所在列的时序驱动器控制信号输出,从而补偿像素点 E和 F之间由于栅 极驱动器控制信号在玻璃基板走线上的延迟。像素点 E、 F之间的像素 点与像素点 F间阻抗的差值小于像素点 E和像素点 F间阻抗的差值, 因 此需要的延迟补偿也相对较小,需按照时序控制信号的延迟时间与像 素远点距同一行其它像素点间阻抗的差值大小呈正比关系进行调节。 最终调节至所有像素点的充电时间与像素远点 F充电时间基本一致, 则调节完毕。 As shown in FIG. 1 , the last row on the liquid crystal panel, the pixel point F of the last column and the first row on the liquid crystal panel, the pixel A of the first column has the largest difference in charging time, and the delay controller is separated from the source on the liquid crystal panel. Timing control of the farthest pixel farthing point F of the driver and gate driver Based on the signal, the delay time of the timing control signal of the pixel in the same column as the pixel far point F is adjusted according to the magnitude of the impedance difference between the pixel far point F and the pixel in the same column. The impedance difference between the pixel point C and the pixel far point F is the largest, and the delay time of the timing control signal of the row where the pixel point C is needed needs to be adjusted, so that the timing control signal of the row where the pixel point C is located is later than the timing control of the row where the pixel far point F is located. The signal is output to compensate for the delay between pixel points C and F due to the source driver control signal on the glass substrate trace. The difference between the impedance between the pixel points C and F and the pixel point F is smaller than the difference between the impedance between the pixel point C and the pixel point F, so the required delay compensation is relatively small, and the gate driver control signal is required. The delay time is adjusted in proportion to the difference in impedance between the pixel far point F and the other pixels in the same row. Then, according to the difference between the pixel far point F and the impedance of the pixel in the same row, the delay time of the timing control signal of the pixel in the same row as the far point of the pixel is adjusted, and the difference between the pixel point E and the pixel far point F is the largest. The delay time of the timing control signal of the column in which the pixel point E is located needs to be adjusted, so that the timing control signal of the column where the pixel point E is located is later than the timing driver control signal output of the column where the pixel far point F is located, thereby compensating between the pixel points E and F. Due to the delay of the gate driver control signal on the glass substrate trace. The difference between the impedance between the pixel points E and F and the pixel point F is smaller than the difference between the impedance between the pixel point E and the pixel point F, so the required delay compensation is relatively small, and the delay of the signal is controlled according to the timing. The time is proportional to the difference in the impedance between the other pixels of the same line from the far point of the pixel. The final adjustment to the charging time of all the pixels is basically the same as the pixel far-point F charging time, and the adjustment is completed.
实施例 3 Example 3
延时控制器以液晶面板上同一行相距栅极驱动器最远的像素点 C 的时序控制信号为基准, 根据像素点 C与其同一行的像素点 A、 B间阻 抗的差值,调节与每一行相距栅极驱动器最远的像素点同一行的像素 点的时序控制信号的延迟时间。 像素点 A与像素点 C间阻抗的差值最 大, 需要调整像素点 A所在列的时序控制信号的延迟时间, 使像素点 A 所在列的时序控制信号晚于像素点 C所在列的时序控制信号输出, 从 而补偿像素点 A和 C之间由于栅极驱动器控制信号在玻璃基板走线上 的延迟。 像素点 A、 C之间的像素点 (例如, 图 1中 B点)与像素点 C间 阻抗的差值小于像素点 A和像素点 C间阻抗的差值,因此需要的延迟补 偿也相对较小, 需按照时序控制信号的延迟时间与像素点 C距同一行 其它像素点间阻抗差值的大小呈正比关系进行调节。 同理, 液晶面板 上其它行也按照上述步骤调节。 然后, 再根据液晶面板上最后一行相 距其它行间阻抗的差值大小调节时序控制信号的延迟时间。 例如, 液 晶面板最后一行相距液晶面板上第一行间阻抗差值最大,需要调整第 一行的时序控制信号晚于最后一行的时序控制信号输出,从而补偿第 一行和最后一行之间由于源极驱动器控制信号在玻璃基板走线上的 延迟。 第一行和最后一行之间的行, 与最后一行间阻抗差值小于第一 行和最后一行间阻抗差值, 因此需要的延迟补偿也相对较小, 需要按 照时序控制信号的延迟时间与液晶面板上最后一行与其它行间阻抗 的差值大小呈正比关系进行调节。最终调节至液晶面板上所有像素点 的充电时间基本一致, 则调节完毕。 The delay controller adjusts and lines each line according to the difference between the impedance of the pixel point C and the pixel A and B of the same row on the same row of the liquid crystal panel, based on the timing control signal of the pixel C which is farthest from the gate driver in the same row. The delay time of the timing control signal of the pixel at the same row from the farthest pixel of the gate driver. The difference between the impedance of the pixel A and the pixel C is the largest, and the delay time of the timing control signal of the column where the pixel A is located needs to be adjusted, so that the timing control signal of the column of the pixel A is later than the timing control signal of the column of the pixel C. The output is thereby compensated for the delay between the pixel points A and C due to the gate driver control signal on the glass substrate trace. The difference between the impedance between the pixel points A, C (for example, point B in FIG. 1) and the pixel point C is smaller than the difference between the impedance between the pixel point A and the pixel point C, and thus the required delay compensation The repayment is relatively small, and the delay time of the timing control signal is adjusted in proportion to the magnitude of the impedance difference between the pixel points C and other pixels in the same row. Similarly, other lines on the LCD panel are also adjusted according to the above steps. Then, the delay time of the timing control signal is adjusted according to the difference between the impedance of the other row on the last row of the liquid crystal panel. For example, the last row of the liquid crystal panel has the largest impedance difference between the first row on the liquid crystal panel, and the timing control signal of the first row needs to be adjusted later than the timing control signal output of the last row, thereby compensating for the source between the first row and the last row. The delay of the pole driver control signal on the glass substrate trace. The impedance difference between the line between the first line and the last line and the last line is smaller than the impedance difference between the first line and the last line, so the required delay compensation is also relatively small, and the delay time of the timing control signal and the liquid crystal are required. The difference between the last row on the panel and the impedance of the other rows is proportional to the magnitude of the difference. Finally, the charging time of all the pixels on the liquid crystal panel is basically the same, and the adjustment is completed.
实施例 4 Example 4
延时控制器以液晶面板上同一列相距源极驱动器最远的像素点 E 的时序控制信号为基准, 根据像素点 E与其同一列的像素点 A、 D间阻 抗的差值大小,调节与每一列相距源极驱动器最远的像素点同一列的 像素点的时序控制信号的延迟时间。像素点 A与像素点 E间阻抗差值最 大, 需要调整像素点 A所在行的时序控制信号的延迟时间, 使像素点 A 所在行的时序控制信号晚于像素点 E所在行的时序控制信号输出, 从 而补偿像素点 A和 E之间由于源极驱动器控制信号在玻璃基板走线上 的延迟。 像素点 A、 E之间的像素点 (例如, 图 1中 D点), 与像素点 E 间的阻抗的差值小于像素点 A和像素点 E间阻抗的差值,因此需要的延 迟补偿也相对较小, 需按照时序控制信号的延迟时间与像素点 E距同 一列其它像素点间阻抗的差值大小呈正比关系进行调节。 同理, 液晶 面板上其它列也按照上述步骤调节。然后再根据液晶面板上最后一列 相距其它列间阻抗的差值大小调节时序控制信号的延迟时间,如液晶 面板最后一列相距液晶面板上第一列间阻抗的差值最大,需要调整第 一列的时序控制信号晚于最后一列的时序控制信号输出,从而补偿第 一列和最后一列之间由于栅极驱动器控制信号在玻璃基板走线上的 延迟。 第一列和最后一列之间的列, 与最后一列间阻抗的差值的小于 第一列和最后一列间阻抗的差值, 因此需要的延迟补偿也相对较小, 需要按照源极驱动器控制信号的延迟时间与液晶面板上最后一列与 其它列间阻抗的差值大小呈正比关系进行调节。最终调节至液晶面板 上所有像素点的充电时间基本一致, 则调节完毕。 The delay controller is based on the timing control signal of the pixel column E of the same column farthest from the source driver on the liquid crystal panel, and is adjusted according to the difference between the impedance of the pixel point E and the pixel A and D of the same column. The delay time of a timing control signal for a column of pixels in the same column from the farthest pixel of the source driver. The impedance difference between the pixel A and the pixel E is the largest, and the delay time of the timing control signal of the row where the pixel A is located needs to be adjusted, so that the timing control signal of the row where the pixel A is located is later than the timing control signal output of the row where the pixel E is located. , thereby compensating for the delay between the pixel points A and E due to the source driver control signal on the glass substrate trace. The difference between the impedance between the pixel points A and E (for example, point D in Fig. 1) and the pixel point E is smaller than the difference between the impedance between the pixel point A and the pixel point E, so the delay compensation required is also Relatively small, it is necessary to adjust the delay time of the timing control signal in proportion to the difference between the impedances of the pixel points E and other pixels in the same column. Similarly, the other columns on the LCD panel are also adjusted according to the above steps. Then, according to the difference between the impedance of the last column on the liquid crystal panel and the impedance of the other columns, the delay time of the timing control signal is adjusted. For example, the difference between the impedances of the first column of the liquid crystal panel and the first column of the liquid crystal panel is the largest, and the first column needs to be adjusted. The timing control signal is later than the timing control signal output of the last column, thereby compensating for the delay between the first column and the last column due to the gate driver control signal on the glass substrate trace. The difference between the impedance between the column between the first column and the last column and the last column is less than The difference between the impedances of the first column and the last column, so the required delay compensation is relatively small, and the delay time of the source driver control signal is proportional to the difference between the impedance of the last column on the liquid crystal panel and the other columns. Make adjustments. Finally, the charging time of all the pixels on the liquid crystal panel is basically the same, and the adjustment is completed.

Claims

权 利 要 求 书 claims
1、 一种显示基板的驱动控制单元, 包括时序控制器和延时控制 器, 其中: 1. A drive control unit for a display substrate, including a timing controller and a delay controller, wherein:
所述时序控制器用于向所述延时控制器发送时序控制信号; 所述延时控制器用于根据所述显示基板的像素点所连接的驱动 信号线的阻抗, 来调节所述时序控制信号, 使像素点的实际充电时长 处于预设的时长范围内。 The timing controller is used to send a timing control signal to the delay controller; the delay controller is used to adjust the timing control signal according to the impedance of the driving signal line connected to the pixel point of the display substrate, Make the actual charging time of the pixels within the preset time range.
2、 如权利要求 1所述的驱动控制单元, 其中, 2. The drive control unit as claimed in claim 1, wherein,
所述延时控制器用于根据所述显示基板的像素点所连接的驱动 信号线的阻抗, 来调节所述时序控制信号, 是指: The delay controller is used to adjust the timing control signal according to the impedance of the driving signal line connected to the pixel point of the display substrate, which means:
所述延时控制器根据所述像素点与像素显示驱动器之间所连接 的驱动信号线的长度和电阻率, 来调节所述时序控制信号。 The delay controller adjusts the timing control signal according to the length and resistivity of the drive signal line connected between the pixel point and the pixel display driver.
3、 如权利要求 1所述的驱动控制单元, 其中, 3. The drive control unit as claimed in claim 1, wherein,
所述延时控制器是用于按以下方式调节所述时序控制信号: 以显示面板上第一像素点的时序控制信号为基准,根据所述显示 面板上的第二像素点与所述像素显示驱动器间所连接的驱动信号线 的阻抗与所述第一像素点与所述像素显示驱动器间所连接的驱动信 号线的阻抗的差值,来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。 The delay controller is used to adjust the timing control signal in the following manner: taking the timing control signal of the first pixel point on the display panel as a reference, according to the second pixel point on the display panel and the pixel display The difference between the impedance of the driving signal line connected between the drivers and the impedance of the driving signal line connected between the first pixel point and the pixel display driver is used to adjust the timing control signal of the second pixel point relative to The delay time of the first pixel timing control signal.
4、 如权利要求 3所述的驱动控制单元, 其中, 4. The drive control unit as claimed in claim 3, wherein,
所述第一像素点为显示面板上距离像素显示驱动器最远的像素 点, 称为像素远点; 所述第二像素点为所述显示面板上除所述像素远 点以外的任意像素点。 The first pixel point is the pixel point farthest from the pixel display driver on the display panel, which is called the pixel far point; the second pixel point is any pixel point on the display panel except the pixel far point.
5、 如权利要求 4所述的驱动控制单元, 其中, 5. The drive control unit as claimed in claim 4, wherein,
所述延时控制器是用于按以下方式调节所述时序控制信号: 以所述像素远点的时序控制信号为基准,先调节与像素远点同一 行的第二像素点的时序控制信号的延迟时间,后调节与所述像素远点 同一列的第二像素点的时序控制信号的延迟时间。 The delay controller is used to adjust the timing control signal in the following manner: based on the timing control signal of the far point of the pixel, first adjust the timing control signal of the second pixel point in the same row as the far point of the pixel. Delay time, and then adjust the delay time of the timing control signal of the second pixel point in the same column as the far point of the pixel.
6、 如权利要求 3所述的驱动控制单元, 其中, 6. The drive control unit as claimed in claim 3, wherein,
所述延时控制器是用于按以下方式调节所述时序控制信号: 以显示面板上第一像素点的时序控制信号为基准,调节所述时序 控制信号使所述第二像素点的时序控制信号的延迟时间与所述阻抗 的差值大小成正比。 The delay controller is used to adjust the timing control signal in the following manner: based on the timing control signal of the first pixel point on the display panel, adjust the timing control signal to control the timing of the second pixel point. The delay time of the signal is proportional to the difference in impedance.
7、 如权利要求 2所述的驱动控制单元, 其中, 7. The drive control unit as claimed in claim 2, wherein,
所述像素显示驱动器是指栅极驱动器或源极驱动器。 The pixel display driver refers to a gate driver or a source driver.
8、 一种显示基板的驱动电路, 包括如权利要求 1至 7中任一项所 述的驱动控制单元。 8. A drive circuit for a display substrate, including the drive control unit according to any one of claims 1 to 7.
9、 一种显示基板的驱动控制方法, 所述显示基板包括具有时序 控制器和延时控制器的驱动电路; 所述方法包括下列步骤: 9. A drive control method for a display substrate, the display substrate including a drive circuit having a timing controller and a delay controller; the method includes the following steps:
令所述时序控制器向所述延时控制器发送时序控制信号; 令所述延时控制器根据所述显示基板的像素点所连接的驱动信 号线的阻抗来调节所述时序控制信号,使像素点的实际充电时长处于 预设的时长范围内。 Let the timing controller send a timing control signal to the delay controller; Let the delay controller adjust the timing control signal according to the impedance of the driving signal line connected to the pixel point of the display substrate, so that The actual charging time of the pixels is within the preset time range.
10、 如权利要求 9所述的驱动控制方法, 10. The drive control method as claimed in claim 9,
所述延时控制器调节所述时序控制信号, 包括: The delay controller adjusts the timing control signal, including:
以显示面板上第一像素点的时序控制信号为基准,根据所述显示 面板上的第二像素点与所述像素显示驱动器间所连接的驱动信号线 的阻抗与所述第一像素点与所述像素显示驱动器间所连接的驱动信 号线的阻抗的差值,来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。 Taking the timing control signal of the first pixel point on the display panel as a reference, according to the impedance of the driving signal line connected between the second pixel point on the display panel and the pixel display driver and the first pixel point and the The difference in impedance of the driving signal lines connected between the pixel display drivers is used to adjust the delay time of the timing control signal of the second pixel point relative to the timing control signal of the first pixel point.
11、 根据权利要求 10所述的驱动控制方法, 其中, 11. The drive control method according to claim 10, wherein,
所述时序控制信号为栅极驱动器控制信号,所述栅极驱动器控制 信号控制像素点的薄膜晶体管开启时间,所述延时控制器通过调节所 述薄膜晶体管开启时间来调节所述第二像素点的时序控制信号相对 于所述第一像素点时序控制信号的延迟时间; 或者, The timing control signal is a gate driver control signal. The gate driver control signal controls the turn-on time of the thin film transistor of the pixel point. The delay controller adjusts the second pixel point by adjusting the turn-on time of the thin film transistor. The delay time of the timing control signal relative to the first pixel timing control signal; or,
所述时序控制信号为源极驱动器控制信号,所述源极驱动器控制 信号控制像素点的偏转电压加载时间,所述延时控制器通过调节所述 偏转电压加载时间来调节所述第二像素点的时序控制信号相对于所 述第一像素点时序控制信号的延迟时间。 The timing control signal is a source driver control signal. The source driver control signal controls the deflection voltage loading time of the pixel point. The delay controller adjusts the second pixel point by adjusting the deflection voltage loading time. The timing control signal is relative to the The delay time of the first pixel timing control signal.
12、 根据权利要求 9所述的驱动控制方法, 12. The drive control method according to claim 9,
所述延时控制器调节所述时序控制信号的步骤为:以显示基板上 第一像素点的时序控制信号为基准,根据所述显示基板上的第二像素 点与所述像素显示驱动器间所连接的驱动信号线的阻抗与所述第一 像素点与所述像素显示驱动器间所连接的驱动信号线的阻抗的差值, 来调节所述第二像素点的时序控制信号相对于所述第一像素点时序 控制信号的延迟时间。 The step for the delay controller to adjust the timing control signal is: taking the timing control signal of the first pixel point on the display substrate as a reference, according to the relationship between the second pixel point on the display substrate and the pixel display driver. The difference between the impedance of the connected driving signal line and the impedance of the driving signal line connected between the first pixel point and the pixel display driver is used to adjust the timing control signal of the second pixel point relative to the third pixel display driver. The delay time of a pixel timing control signal.
1 3、 如权利要求 12所述的驱动控制方法, 其中, 13. The drive control method according to claim 12, wherein,
所述第一像素点为显示面板上距离像素显示驱动器最远的像素 点, 称为像素远点; 所述第二像素点为所述显示面板上除所述像素远 点以外的任意像素点。 The first pixel point is the pixel point farthest from the pixel display driver on the display panel, which is called the pixel far point; the second pixel point is any pixel point on the display panel except the pixel far point.
14、 如权利要求 12所述的驱动控制方法, 14. The drive control method as claimed in claim 12,
所述延时控制器是用于按以下方式调节所述时序控制信号: 以所述第一像素点的时序控制信号为基准,先调节与第一像素点 同一行的第二像素点的时序控制信号的延迟时间; 和 /或, 以所述第 一像素点的时序控制信号为基准,调节与所述第一像素点同一列的第 二像素点的时序控制信号的延迟时间。 The delay controller is used to adjust the timing control signal in the following manner: based on the timing control signal of the first pixel point, first adjust the timing control of the second pixel point in the same row as the first pixel point. The delay time of the signal; and/or, based on the timing control signal of the first pixel point, adjust the delay time of the timing control signal of the second pixel point in the same column as the first pixel point.
15、如权利要求 12所述的驱动控制方法, 所述延时控制器是用于 按以下方式调节所述时序控制信号: 15. The drive control method as claimed in claim 12, wherein the delay controller is used to adjust the timing control signal in the following manner:
以显示面板上第一像素点的时序控制信号为基准,调节所述时序 控制信号使所述第二像素点的时序控制信号的延迟时间与所述阻抗 的差值大小成正比。 Taking the timing control signal of the first pixel point on the display panel as a reference, the timing control signal is adjusted so that the delay time of the timing control signal of the second pixel point is proportional to the difference in impedance.
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