WO2014094322A1 - 一种液晶面板的驱动电路及其驱动方法、液晶显示装置 - Google Patents
一种液晶面板的驱动电路及其驱动方法、液晶显示装置 Download PDFInfo
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- WO2014094322A1 WO2014094322A1 PCT/CN2012/087274 CN2012087274W WO2014094322A1 WO 2014094322 A1 WO2014094322 A1 WO 2014094322A1 CN 2012087274 W CN2012087274 W CN 2012087274W WO 2014094322 A1 WO2014094322 A1 WO 2014094322A1
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- controllable switch
- switch
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- driving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0223—Compensation 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Definitions
- the present invention relates to the field of liquid crystal display, and more particularly to a driving circuit for a liquid crystal panel, a driving method thereof, and a liquid crystal display device.
- the liquid crystal panel includes scan lines and data lines, and the data lines are driven by a data driving module, and the scan lines are driven by the scan driving module.
- the existing large-size liquid crystal panel has a longer signal line from the data driving module to the liquid crystal panel than the signal line to the center of the panel, that is, the data driving module output from the COF (chip on Aim) data film of the data signal.
- the resistance of the pixels in the first row of the liquid crystal panel will be greatly different, and such a difference in resistance will cause the degree of distortion of the data signal to reach the first line, as shown in Figures 1 to 3, L1 (output to The distance between the two ends is much larger than L2 (the distance from the output to the middle).
- the pixel charging speed at both ends of the LCD panel is obviously lagging behind the pixels in the middle of the panel.
- the pixels on the panel are not uniformly charged, which may result in poor display of the panel and affect the display taste.
- the liquid crystal panel of the Tri-gate (triple gate scan line) structure is in the low-gray mixed color picture, such as the yellow 128 gray scale, and the two sides are prone to color shift phenomenon, that is, reddish or greenish, which will cause color. Partial problem.
- the compensation is done by the serpentine line, but the compensation of the serpentine line is not enough to reduce the impedance difference caused by the difference in distance, and the longer serpentine line wiring occupies a larger area, which is not conducive to narrow frame.
- the technical problem to be solved by the present invention is to provide a driving circuit for a liquid crystal panel which can improve the display taste of a panel in a large size, a driving method thereof, and a liquid crystal display device.
- a driving circuit for a liquid crystal panel includes a control circuit board and a liquid crystal panel, wherein the liquid crystal panel is provided with a plurality of scan lines and a plurality of data lines, and the control circuit board includes a data driving module for driving the data lines and driving the scan lines Scanning drive module, the data driving module passes through the switch module and each data line Coupling; the switch module is disposed on one end of the liquid crystal panel adjacent to the data line,
- the switch module turns off the signal of the data drive module, and delays the data drive after a predetermined delay time. The signal of the module.
- the switch module includes a controllable switch connected in series between the data drive module and the data line, and a monitoring unit coupled to the controllable switch control end, wherein the monitoring unit is provided with a time-adjustable delay component;
- the monitoring unit controls the controllable switch to be turned off when the scan of the upper line of the scan line is completed and switches to the scan line of the next line, and turns off the signal of the data drive module, and the delay component reaches the preset delay time and then controls the control unit.
- the controllable switch is turned on to recover the signal of the data driving module.
- the controllable switch is turned on again, so that the data waveform of each data line can be kept consistent.
- This delay time can be obtained according to the actual measurement, but different liquid crystal panels may have different, so the delay component can be used according to different liquid crystal panels.
- the optimal delay time you can avoid the delay time of the rising part of the signal, and at the same time allow the signal to have sufficient duration to ensure the display effect.
- the driving circuit of the liquid crystal panel includes a timing control module, and the monitoring unit is integrated in the timing control module; the output of the timing control module is used to control the driving of the previous row of scan lines to switch to the next row of scan lines.
- the control signal is enabled; the enable control signal of the timing control module is coupled to the control terminals of all controllable switches via a control line.
- the monitoring unit further includes a conversion component that can adjust a duty ratio of the enable control signal.
- the enable control signals are periodic signals with a fixed duty ratio, and the duty ratio is relatively small, that is, the high level duration is 4 ⁇ short. In such a short period of time, the pixel electrode charge amount is difficult to guarantee. Therefore, the display abnormality is caused; after the conversion component is added, the duty ratio of the enable control signal can be arbitrarily adjusted as needed, so that the pixel electrode has sufficient charging time to reach a predetermined potential to ensure display quality.
- the delay component includes a first switch group, a second switch group, a third switch group, and a fourth switch group that are disposed in parallel;
- the first switch group includes a first controllable switch and a second switch that are disposed in series Controlling the switch, the first controllable switch is turned on at a high level; and is connected to a low level signal; the second controllable switch is turned on at a low level, and is connected to a high level signal;
- the group includes a third controllable switch and a fourth controllable switch arranged in series, the third controllable switch is turned on at a high level; and is connected to a low level signal; and the fourth controllable switch is turned on at a low level And connecting a high level signal;
- the third switch group includes a fifth controllable switch and a sixth controllable switch arranged in series, the fifth controllable switch is turned on at a high level; and is connected to a low level
- the sixth controllable switch is turned on at a low level
- the control signal is enabled to a high level
- the first controllable switch is turned on, and the low level signal is coupled to the control end of the eighth controllable switch through the first controllable switch, and the eighth controllable switch is turned on, high power
- the flat signal is coupled to the control line of the controllable switch of the switch module through the eighth controllable switch, and the switch module is turned on; when the control signal is low, the third controllable switch is turned on, The low level signal is coupled to the control end of the sixth controllable switch through the third controllable switch, and then the high level signal is coupled to the control end of the seventh controllable switch through the sixth controllable switch, and the seventh controllable switch is turned on
- the control line of the controllable switch of the switch module is coupled to the low level signal through the seventh controllable switch, and the switch module is turned off.
- the enable control signal is directly connected to the control end of the controllable switch through the control line.
- the monitoring unit is coupled to the control terminals of all controllable switches via a control line.
- the technical solution can ensure that the controllable switches of each data line are synchronously turned on and synchronized off, so that each display area of the liquid crystal panel can be synchronously displayed, thereby ensuring the integrity of the screen display.
- a driving method of a liquid crystal panel the driving circuit of the liquid crystal panel comprises a plurality of scanning lines and a plurality of data lines, and a data driving module for driving the data lines, and the driving method of the liquid crystal panel comprises the steps of:
- the switch module turns off the signal of the data drive module and delays after a predetermined delay time. The signal of the data drive module.
- the switch module includes a controllable switch connected in series between the data driving module and the data line, and a monitoring unit coupled to the controllable switch control end;
- the driving circuit of the liquid crystal panel includes a timing control module, and the monitoring unit Integrated in the timing control module; the timing control module outputs an enable control signal for controlling switching of the previous line of scan line driving to the next line of scan line driving;
- the step A includes: connecting a controllable switch of the switch module between the data driving module and the data line;
- the step B includes: coupling an enable control signal to a control terminal of the controllable switch, the controllable switch being turned on when the enable control signal is at a high level, and being turned off when the enable control signal is at a low level.
- the image signal output from the data line is also switched from the previous sub-pixel to the next sub-pixel, so that it can be controlled by the enable control signal.
- the conduction and cut-off of the controllable switch facilitates the tube control circuit and saves development cost.
- the square wave that enables the control signal is generally fixed, that is, the square wave duration of each enable control signal remains unchanged.
- the time during which the controllable switch is turned on is also fixed, and the effective display time of each sub-pixel will remain unchanged. Therefore, the charge amount of each sub-pixel is substantially the same, which is advantageous for further suppressing the generation of color shift.
- a liquid crystal display device comprising a driving circuit of a liquid crystal panel according to the present invention.
- a liquid crystal panel having a triple-gate structure also causes a problem of color shift. As illustrated in FIG. 2, the amount of charge of the green pixel G is less than that of the red pixel R.
- the amount of charge can be seen as the area of the waveform relative to time by nearsightedness
- L1 represents the data line waveform at both ends of the liquid crystal panel
- the area S2 of the red sub-pixel R is larger than the area S1 of the green sub-pixel G, so the display effect of the red pixel is Brighter than the green pixel, the two ends of the panel are reddish
- L1 corresponds to the corresponding data line waveform in the middle of the liquid crystal panel, and the data line signal waveform is basically not deformed, so the area S1 corresponding to the green pixel and the area S2 of the red pixel are substantially the same, no color Partial phenomenon.
- the invention adopts a switch module.
- the data line signals reaching both ends of the liquid crystal panel are deformed, that is, the signal reaches a maximum level from a low level, and a certain delay time is required, and the middle position of the liquid crystal panel is required.
- the signal is basically free of delay, and the switch module is turned off before the end of the previous line of scan line driving, and is turned on after the start of the next line of scan line driving, so that part or even all of the delay time can be avoided, so that the waveform actually arriving at the data line can be Basically, it is a square wave, that is, whether it is the middle position or the two end positions of the liquid crystal panel, the waveform of the final arrival data line can be basically kept consistent, and the charging power of the different pixels at both ends of the panel and the middle can be substantially consistent, thereby improving the display taste.
- the charge amount of the pixel electrode corresponding to the different colors can be substantially consistent, and the color shift phenomenon is improved.
- the invention is applicable to panels of various structures, and is particularly suitable for a liquid crystal panel of a triple-gate scanning line (Tri-gate) structure.
- FIG. 1 is a schematic view of a conventional liquid crystal panel
- FIG. 2 is a schematic view showing a pixel arrangement of a conventional liquid crystal panel
- FIG. 3 is a schematic diagram showing waveforms of data signals of a conventional liquid crystal panel
- Figure 4 is a schematic view of the principle of the present invention.
- FIG. 5 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 6 is a schematic diagram of signal waveforms of an embodiment of the present invention.
- FIG. 7 is a schematic diagram of a delay component of an embodiment of the present invention.
- FIG. 8 is a schematic flow chart of a method according to an embodiment of the present invention.
- the invention discloses a liquid crystal display device, comprising a driving circuit of a liquid crystal panel, wherein the driving circuit of the liquid crystal panel comprises a control circuit board and a liquid crystal panel, wherein the liquid crystal panel is provided with a plurality of scanning lines and a plurality of data lines, and the control circuit board
- the data driving module includes a driving data line and a scan driving module for driving the scan line, and the data driving module is coupled to each of the data lines through the switch module; the switch module is disposed on one end of the liquid crystal panel adjacent to the data line,
- the switch module turns off the signal of the data drive module and delays the data drive module after a predetermined delay time. signal.
- a liquid crystal panel having a triple-gate structure also causes a problem of color shift, as illustrated in FIG. The amount of charge of the green pixel G is less than that of the red pixel R.
- the amount of charge can be seen as the area of the waveform relative to time by nearsightedness
- L1 represents the data line waveform at both ends of the liquid crystal panel
- the area S2 of the red sub-pixel R is larger than the area S1 of the green sub-pixel G, so the display effect of the red pixel is Brighter than the green pixel, the two ends of the panel are reddish
- L1 corresponds to the corresponding data line waveform in the middle of the liquid crystal panel, and the data line signal waveform is basically not deformed, so the area S1 corresponding to the green pixel and the area S2 of the red pixel are substantially the same, no color Partial phenomenon.
- the invention adopts a switch module.
- the data line signals reaching both ends of the liquid crystal panel are deformed, that is, the signal reaches a maximum level from a low level, and a certain delay time is required, and the middle position of the liquid crystal panel is required.
- the signal is basically free of delay, and the switch module is turned off before the end of the previous line of scan line driving, and is turned on after the start of the next line of scan line driving, so that part or even all of the delay time can be avoided, so that the waveform actually arriving at the data line can be Basically, it is a square wave, that is, whether it is the middle position or the two end positions of the liquid crystal panel, the waveform of the final arrival data line can be basically kept consistent, and the charging power of the different pixels at both ends of the panel and the middle can be substantially consistent, thereby improving the display taste.
- the charge amount of the pixel electrode corresponding to the different colors can be substantially consistent, and the color shift phenomenon is improved.
- the invention is applicable to panels of various structures, and is particularly suitable for a liquid crystal panel of a triple-gate scanning line (Tri-gate) structure.
- the liquid crystal display device includes a timing control module 4, and vertical and horizontal interlaced scan lines (G1 to Gn) and data lines (D1 to Dn), each of which is coupled to the scan driving module 3, and is scanned.
- the drive module 3 is driven row by row.
- the switch module 2 comprises a controllable switch connected in series between the data drive module 1 and the data line, a monitoring unit 5 coupled to the controllable switch control end, the monitoring unit 5 is provided with a time-adjustable delay component 6; the monitoring unit 5 is integrated in In the timing control module 4; the timing control module 4 outputs an enable control signal for controlling the switching of the previous line of scan line driving to the next line of scan line driving; the enable control signal of the timing control module 4 is coupled to all through a control line Control the control terminal.
- the monitoring unit 5 controls the end of the scan line of the previous line and switches to the next scan line for driving control.
- the controllable switch is turned off, the signal of the data driving module 1 is turned off, and the delay component 6 controls the controllable switch to be turned on after the preset delay time is reached, and the signal of the data driving module 1 is restored.
- the data line signals reaching the two ends of the liquid crystal panel are deformed, that is, the signal reaches a maximum level from a low level, and a certain delay time is required.
- the most ideal effect is naturally to avoid the maximum delay time.
- the controllable switch is turned on again, so that the data waveform of each data line can be kept consistent.
- This delay time can be obtained according to the actual measurement, but different liquid crystal panels may have different, so the delay component 6 can be used according to different liquid crystals.
- the panel is used to set the optimal delay time, which avoids the delay time of the rising part of the signal, and at the same time allows the signal to have sufficient duration to ensure the display effect.
- the image signal output by the data line also switches from the previous sub-pixel to the next sub-pixel, so that the enable control signal can be used to control the conduction of the controllable switch.
- the cut-off is beneficial to the tube control circuit and saves development cost.
- the square wave that enables the control signal is generally fixed, that is, the square wave duration of each enable control signal remains unchanged, so that the controllable switch is guided each time.
- the duration of the pass is also fixed, and the effective display time of each sub-pixel will remain unchanged. Therefore, the charge amount of each sub-pixel is substantially the same, which is advantageous for further suppressing the generation of color shift. See Figure 6 for the specific drive waveform.
- the monitoring unit 5 may also include a conversion component 7 that adjusts the duty cycle of the enable control signal.
- the enable control signals are periodic signals with a fixed duty ratio, and the duty ratio is relatively small, that is, the high level duration is 4 ⁇ short. In such a short period of time, the pixel electrode charge amount is difficult to guarantee. Therefore, the display abnormality is caused; after the conversion component 7 is added, the duty ratio of the enable control signal can be arbitrarily adjusted as needed, so that the pixel electrode has sufficient charging time to reach a predetermined potential to ensure display quality.
- the delay component 6 includes a first switch group 8, a second switch group 9, a third switch group 10, and a fourth switch group 11 which are disposed in parallel;
- the first switch group 8 includes a first controllable switch Q1 and a second controllable switch Q2 arranged in series, the first controllable switch Q1 is turned on at a high level; and is connected to a low level signal VGL; the second controllable switch Q2 Low level is turned on, and a high level signal VGHF is connected; the second switch group 9 includes a third controllable opening in series Turning off Q3 and the fourth controllable switch Q4, the third controllable switch Q3 is turned on at a high level; and is connected to a low level signal VGL; the fourth controllable switch Q4 is turned on at a low level, and is connected to a high level signal VGHF; the third switch group 10 includes a fifth controllable switch Q5 and a sixth controllable switch Q6 arranged in series, the fifth controllable switch Q5 is turned on at a high level; and is connected to a low level signal VGL; The switch Q6 is turned on at a low level and connected to a high level signal VG
- the enable control signal is coupled to the control end of the first controllable switch Q1, and the enable control signal is inverted and coupled to the control end of the third controllable switch Q3; the first controllable switch Q1 and the second controllable switch Q2 are connected in series One end is respectively coupled to the control ends of the fourth controllable switch Q4 and the eighth controllable switch Q8; one end of the third controllable switch Q3 and the fourth controllable switch Q4 connected in series is coupled to the second controllable switch Q2 and the sixth Controlling the control terminal of the switch Q6; one end of the fifth controllable switch Q5 and the sixth controllable switch Q6 connected in series is coupled to the control end of the seventh controllable switch Q7; the seventh controllable switch Q7 and the eighth controllable switch Q8 are connected in series One end is coupled to the control terminal and the control line of the fifth controllable switch Q5, respectively.
- the conversion component can be used to convert the enable control signal OE to the control signal A of the controllable switch of the switch module.
- the enable control signal OE is high level
- the first controllable switch Q1 is turned on, and the low level signal VGLVGL is coupled to the control end of the eighth controllable switch Q8 through the first controllable switch Q1, and the eighth controllable switch Q8
- the conduction, the high level signal VGHF is coupled to the control line of the controllable switch of the switch module through the eighth controllable switch Q8, and the switch module is turned on;
- the control signal OE is enabled, the third controllable switch Q3 leads
- the low level signal VGL is coupled to the control terminal of the sixth controllable switch Q6 through the third controllable switch Q3, and then the high level signal VGHF is coupled to the control end of the seventh controllable switch Q7 through the sixth controllable switch Q6.
- the seventh controllable switch Q7 is turned on, and the control line of the controllable switch of the
- the enable control signal of the present invention can also be directly connected to the control end of the controllable switch without any delay or conversion processing, and the circuit structure can be compressed, which is advantageous for reducing development and production costs.
- the present invention also discloses a driving method of a liquid crystal panel, and a driving power of the liquid crystal panel
- the circuit includes a plurality of scan lines and a plurality of data lines, and a data driving module for driving the data lines.
- the driving method of the liquid crystal panel includes the steps of:
- the switch module turns off the signal of the data drive module and delays after a predetermined delay time. The signal of the data drive module.
- the switch module further comprises: a controllable switch connected in series between the data driving module and the data line; and a monitoring unit coupled with the controllable switch control end;
- the driving circuit of the liquid crystal panel comprises a timing control module, The monitoring unit is integrated in the timing control module; the timing control module output has an enable control signal for controlling the switching of the previous row of scan line driving to the next row of scan line driving;
- step A comprises: serially connecting the controllable switch of the switch module to Between the data driving module and the data line;
- Step B includes: coupling the enable control signal to the control terminal of the controllable switch, the controllable switch is turned on when the enable control signal is high level, and is turned off when the enable control signal is low level .
- the image signal output by the data line also switches from the previous sub-pixel to the next sub-pixel, so that the enable control signal can be used to control the conduction of the controllable switch.
- the cut-off is beneficial to the tube control circuit and saves development cost.
- the square wave that enables the control signal is generally fixed, that is, the square wave duration of each enable control signal remains unchanged, so that the controllable switch is guided each time.
- the duration of the pass is also fixed, and the effective display time of each sub-pixel will remain unchanged. Therefore, the charge amount of each sub-pixel is substantially the same, which is advantageous for further suppressing the generation of color shift.
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Abstract
一种液晶面板的驱动电路及其驱动方法、液晶显示装置。该驱动电路包括控制电路板和液晶面板,液晶面板包括多条扫描线和多条数据线,控制电路板包括驱动数据线的数据驱动模块(1)。所述液晶面板上设有开关模块(2),所述数据驱动模块(1)通过开关模块(2)和数据线耦合。在上一行扫描线驱动结束并切换到下一行扫描线进行驱动时,所述的开关模块(2)关断数据驱动模块(1)的信号,并延迟一预设的延迟时间后恢复数据驱动模块(1)的信号。
Description
一种液晶面板的驱动电路及其驱动方法、 液晶显示装置
【技术领域】
本发明涉及液晶显示领域, 更具体的说, 涉及一种液晶面板的驱动电路及 其驱动方法、 液晶显示装置。
【背景技术】
液晶面板包括扫描线和数据线, 数据线通过数据驱动模块来驱动, 扫描线 通过扫描驱动模块来驱动。 现有的大尺寸液晶面板, 由于从数据驱动模块至液 晶面板两端的信号线要比至面板中央的信号线要长, 即从数据信号的 COF ( chip on Aim )数据膜上的数据驱动模块输出到液晶面板的第一行像素的电阻会有较大 的差异, 而这样的电阻差异会使得数据信号到达第一行的时候的失真程度会有 差异,如图 1~3示意, L1 (输出到两端的距离)远大于 L2 (输出到中间的距离 ), 液晶面板两端的像素充电速度明显滞后面板中间的像素, 面板各像素充电不均 匀, 会导致面板的显示效果不佳, 影响显示品味。 特别是 Tri-gate (三倍栅极扫 描线)结构的液晶面板在低灰阶混色画面下, 如黄色 128灰阶, 两端易出现色 偏现象, 即偏红或者偏绿, 就会造成色偏问题。 通常, 会通过蛇形线来做补偿, 但是蛇形线的补偿还是不能足够的减少距离差异导致的阻抗差异, 而且较长的 蛇形线布线占据较大的面积, 不利于窄边框化。
【发明内容】
本发明所要解决的技术问题是提供一种可提高大尺寸时面板的显示品味的 液晶面板的驱动电路及其驱动方法、 液晶显示装置。
本发明的目的是通过以下技术方案来实现的:
一种液晶面板的驱动电路, 包括控制电路板和液晶面板, 所述液晶面板设 有多条扫描线和多条数据线, 所述控制电路板包括驱动数据线的数据驱动模块 和驱动扫描线的扫描驱动模块, 所述数据驱动模块通过开关模块和每条数据线
耦合; 所述开关模块设置在液晶面板上邻近数据线的一端,
在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线进 行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟时 间后恢复数据驱动模块的信号。
进一步的, 所述开关模块包括串联在数据驱动模块和数据线之间的可控开 关、 与可控开关控制端耦合的监控单元, 所述监控单元设有时间可调的延迟组 件;
所述监控单元在上一行扫描线驱动结束并切换到下一行扫描线进行驱动时 控制所述可控开关关闭, 关断所述数据驱动模块的信号, 延迟组件达到预设的 延迟时间后控制所述可控开关导通, 恢复所述数据驱动模块的信号。 上下两行 扫描线切换时, 达到液晶面板的两端的数据线信号会变形, 即信号从低电平达 到最高电平需要一定的延迟时间, 最理想的效果自然是避开最大的延迟时间后, 可控开关再导通, 这样每条数据线的数据波形都能保持一致, 这个延迟时间可 以根据通过实际测量得出, 但不同的液晶面板会存在差异, 因此采用延迟组件 可以根据不同的液晶面板来设定最佳的延迟时间, 可以避开信号上升部分的延 迟时间, 同时又能让信号有足够的持续时间, 以保障显示效果。
进一步的, 所述液晶面板的驱动电路包括时序控制模块, 所述监控单元集 成在所述时序控制模块中; 所述时序控制模块输出有用于控制上一行扫描线驱 动切换到下一行扫描线驱动的使能控制信号; 所述时序控制模块的使能控制信 号通过一根控制线耦合到所有可控开关的控制端。 上一行扫描线驱动切换到下 一行扫描线的时候, 数据线输出的图像信号也从上一个子像素切换到下一个子 像素, 因此完全可以利用使能控制信号来控制可控开关的导通、 截止, 有利于 筒化控制电路, 节省开发成本; 另外, 使能控制信号的方波一般是固定的, 即 每个使能控制信号的方波持续时间保持不变, 这样可控开关每次导通持续的时 间也是固定的, 每个子像素的有效显示时间也将保持不变, 因此每个子像素的 充电量基本一致, 有利于进一步抑制色偏的产生。
进一步的, 所述监控单元还包括可调节所述使能控制信号占空比的转换组 件。 通常使能控制信号都是一个固定占空比的周期信号, 且占空比比较小, 即 高电平持续的时间 4艮短, 在这么短的一个时间内, 像素电极充电量 ^艮难保障, 从而造成显示异常; 增加转换组件以后就可以根据需要随意调整使能控制信号 的占空比, 让像素电极有充足的充电时间, 达到预定的电位, 确保显示质量。
进一步的, 所述延迟组件包括并联设置的第一开关组、 第二开关组、 第三 开关组、 第四开关组; 所述第一开关组包括串联设置的第一可控开关和第二可 控开关, 所述第一可控开关高电平导通; 并连接一低电平信号; 所述第二可控 开关低电平导通, 并连接一高电平信号; 所述第二开关组包括串联设置的第三 可控开关和第四可控开关, 所述第三可控开关高电平导通; 并连接一低电平信 号; 所述第四可控开关低电平导通, 并连接一高电平信号; 所述第三开关组包 括串联设置的第五可控开关和第六可控开关, 所述第五可控开关高电平导通; 并连接一低电平信号; 所述第六可控开关低电平导通, 并连接一高电平信号; 所述第四开关组包括串联设置的第七可控开关和第八可控开关, 所述第七可控 开关高电平导通; 并连接一低电平信号; 所述第八可控开关低电平导通, 并连 接一高电平信号; 所述使能控制信号耦合到第一可控开关的控制端, 所述使能 控制信号取反后耦合到第三可控开关的控制端; 所述第一可控开关和第二可控 开关串联的一端分别耦合到第四可控开关和第八可控开关的控制端; 所述第三 可控开关和第四可控开关串联的一端分别耦合到第二可控开关和第六可控开关 的控制端; 所述第五可控开关和第六可控开关串联的一端耦合到第七可控开关 的控制端; 所述第七可控开关和第八可控开关串联的一端分别耦合到第五可控 开关的控制端和所述控制线。 此为一种具体的转换组件结构, 可以将使能控制 信号转换为开关模块的可控开关的控制信号。 当使能控制信号高电平时, 第一 可控开关导通, 低电平信号通过第一可控开关耦合到第八可控开关的控制端, 第八可控开关随之导通, 高电平信号通过第八可控开关耦合到开关模块的可控 开关的控制线, 开关模块导通; 当使能控制信号低电平时, 第三可控开关导通,
低电平信号通过第三可控开关耦合到第六可控开关的控制端, 然后高电平信号 通过第六可控开关耦合到第七可控开关的控制端, 第七可控开关导通, 开关模 块的可控开关的控制线通过第七可控开关耦合到低电平信号, 开关模块关断。
进一步的, 所述使能控制信号通过所述控制线直接连接到所述可控开关的 控制端。 此为一种利用使能控制信号直接控制开关模块的可控开关的技术方案, 电路结构筒单, 有利于降低开发和生产成本。
进一步的, 所述监控单元通过一根控制线耦合到所有可控开关的控制端。 本技术方案可以保障每条数据线的可控开关同步导通和同步截止, 这样液晶面 板每个显示区域都能同步显示, 保证了画面显示的完整性。
一种液晶面板的驱动方法, 液晶面板的驱动电路包括多条扫描线和多条数 据线, 以及驱动数据线的数据驱动模块, 液晶面板的驱动方法包括步骤:
A: 在数据驱动模块和每条数据线之间加设开关模块, 所述开关模块设置在 液晶面板上邻近数据线的一端;
B: 在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线 进行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟 时间后恢复数据驱动模块的信号。
进一步的, 所述开关模块包括串联在数据驱动模块和数据线之间的可控开 关、 与可控开关控制端耦合的监控单元; 所述液晶面板的驱动电路包括时序控 制模块、 所述监控单元集成在所述时序控制模块中; 所述时序控制模块输出有 用于控制上一行扫描线驱动切换到下一行扫描线驱动的使能控制信号;
所述步骤 A包括: 将开关模块的可控开关串联到数据驱动模块和数据线之 间;
所述步骤 B 包括: 将使能控制信号耦合到所述可控开关的控制端, 所述可 控开关在使能控制信号高电平时导通, 在使能控制信号低电平时关闭。
上一行扫描线驱动切换到下一行扫描线的时候, 数据线输出的图像信号也 从上一个子像素切换到下一个子像素, 因此完全可以利用使能控制信号来控制
可控开关的导通、 截止, 有利于筒化控制电路, 节省开发成本; 另外, 使能控 制信号的方波一般是固定的, 即每个使能控制信号的方波持续时间保持不变, 这样可控开关每次导通持续的时间也是固定的, 每个子像素的有效显示时间也 将保持不变, 因此每个子像素的充电量基本一致, 有利于进一步抑制色偏的产 生。
一种液晶显示装置, 包括本发明所述的一种液晶面板的驱动电路。
发明人研究发现, 由于面板两端的像素充电时延迟比较严重, 这就导致在 面板两端的像素列中, 液晶面板两端的像素充电速度明显滞后面板中间的像素, 面板各像素充电不均勾, 面板的显示效果不佳, 显示品味不佳。 尤其是三倍栅 极扫描线(Tri-gate )结构的液晶面板, 还会导致色偏的问题, 如图 2中示意, 绿色像素 G的充电量即少于红色像素 R。参见图 3,充电量可以近视看成波形相 对时间的面积, L1表示液晶面板两端的数据线波形,其红色子像素 R的面积 S2 大于绿色子像素 G的面积 S1 , 因此红色像素的显示效果要比绿色像素亮, 面板 两端偏红; 而 L1对应液晶面板中间对应的数据线波形, 其数据线信号波形基本 没有变形, 因此绿色像素对应的面积 S1和红色像素的面积 S2基本一致, 没有 色偏现象。 本发明由于采用了开关模块, 当上下两行扫描线切换时, 达到液晶 面板的两端的数据线信号会变形, 即信号从低电平达到最高电平需要一定的延 迟时间, 液晶面板中部位置的信号则基本没有延迟, 而开关模块在上一行扫描 线驱动结束之前截止, 并在下一行扫描线驱动开始后导通, 这样就能部分甚至 全部避开该延迟时间, 这样实际抵达数据线的波形可以基本保持为方波, 即不 论是液晶面板中部位置还是两端位置, 最终抵达数据线的波形能基本保持一致, 面板两端与中间的不同像素的充电电量能基本保持一致, 提高了显示品味。 尤 其是对于三倍栅极扫描线(Tri-gate )结构的液晶面板来说, 不同颜色对应的像 素电极的充电电量也就能基本保持一致, 改善了色偏现象。 本发明适用于各种 结构的面板, 特别适用于三倍栅极扫描线(Tri-gate )结构的液晶面板。
【附图说明】
图 1是现有的一种液晶面板的示意图;
图 2是现有的一种液晶面板的像素排列示意图;
图 3是现有的一种液晶面板的数据信号波形示意图;
图 4是本发明原理示意图;
图 5是本发明实施例的液晶显示装置示意图;
图 6是本发明实施例的信号波形示意图;
图 7是本发明实施例延迟组件的示意图;
图 8是本发明实施例方法流程示意图。
其中: 1、 数据驱动模块; 2、 开关模块; 3、 扫描驱动模块; 4、 时序控制 模块; 5、 监控单元; 6、 延迟组件; 7、 转换组件; 8、 第一开关组; 9、 第二开 关组; 10、 第三开关组; 11、 第四开关组。
【具体实施方式】
本发明公开了一种液晶显示装置, 包括一种液晶面板的驱动电路, 该液晶 面板的驱动电路包括控制电路板和液晶面板, 液晶面板设有多条扫描线和多条 数据线, 控制电路板包括驱动数据线的数据驱动模块和驱动扫描线的扫描驱动 模块, 数据驱动模块通过开关模块和每条数据线耦合; 开关模块设置在液晶面 板上邻近数据线的一端,
在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线进 行驱动时, 的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟时间后 恢复数据驱动模块的信号。
发明人研究发现, 由于面板两端的像素充电时延迟比较严重, 这就导致在 面板两端的像素列中, 液晶面板两端的像素充电速度明显滞后面板中间的像素, 面板各像素充电不均勾, 面板的显示效果不佳, 显示品味不佳。 尤其是三倍栅 极扫描线(Tri-gate ) 结构的液晶面板, 还会导致色偏的问题, 如图 2中示意,
绿色像素 G的充电量即少于红色像素 R。参见图 3,充电量可以近视看成波形相 对时间的面积, L1表示液晶面板两端的数据线波形,其红色子像素 R的面积 S2 大于绿色子像素 G的面积 S1 , 因此红色像素的显示效果要比绿色像素亮, 面板 两端偏红; 而 L1对应液晶面板中间对应的数据线波形, 其数据线信号波形基本 没有变形, 因此绿色像素对应的面积 S1和红色像素的面积 S2基本一致, 没有 色偏现象。 本发明由于采用了开关模块, 当上下两行扫描线切换时, 达到液晶 面板的两端的数据线信号会变形, 即信号从低电平达到最高电平需要一定的延 迟时间, 液晶面板中部位置的信号则基本没有延迟, 而开关模块在上一行扫描 线驱动结束之前截止, 并在下一行扫描线驱动开始后导通, 这样就能部分甚至 全部避开该延迟时间, 这样实际抵达数据线的波形可以基本保持为方波, 即不 论是液晶面板中部位置还是两端位置, 最终抵达数据线的波形能基本保持一致, 面板两端与中间的不同像素的充电电量能基本保持一致, 提高了显示品味。 尤 其是对于三倍栅极扫描线(Tri-gate )结构的液晶面板来说, 不同颜色对应的像 素电极的充电电量也就能基本保持一致, 改善了色偏现象。 本发明适用于各种 结构的面板, 特别适用于三倍栅极扫描线(Tri-gate )结构的液晶面板。
下面以三倍栅极扫描线 (Tri-gate ) 结构的液晶面板为例, 结合附图和较佳 的实施例对本发明作进一步说明。
如图 4、 5所示, 液晶显示装置包括时序控制模块 4、 以及纵横交错的扫描 线 (Gl ~ Gn )和数据线(Dl ~ Dn ), 每条扫描线耦合到扫描驱动模块 3, 由扫 描驱动模块 3逐行驱动。
开关模块 2包括串联在数据驱动模块 1和数据线之间的可控开关、 与可控 开关控制端耦合的监控单元 5, 监控单元 5设有时间可调的延迟组件 6; 监控单 元 5集成在时序控制模块 4中; 时序控制模块 4输出用于控制上一行扫描线驱 动切换到下一行扫描线驱动的使能控制信号; 时序控制模块 4 的使能控制信号 通过一根控制线耦合到所有可控开关的控制端。
监控单元 5在上一行扫描线驱动结束并切换到下一行扫描线进行驱动时控
制可控开关关闭, 关断数据驱动模块 1的信号, 延迟组件 6达到预设的延迟时 间后控制可控开关导通, 恢复数据驱动模块 1的信号。
上下两行扫描线切换时, 达到液晶面板的两端的数据线信号会变形, 即信 号从低电平达到最高电平需要一定的延迟时间, 最理想的效果自然是避开最大 的延迟时间后, 可控开关再导通, 这样每条数据线的数据波形都能保持一致, 这个延迟时间可以根据通过实际测量得出, 但不同的液晶面板会存在差异, 因 此采用延迟组件 6可以根据不同的液晶面板来设定最佳的延迟时间, 可以避开 信号上升部分的延迟时间, 同时又能让信号有足够的持续时间, 以保障显示效 果。
上一行扫描线驱动切换到下一行扫描线的时候, 数据线输出的图像信号也 从上一个子像素切换到下一个子像素, 因此完全可以利用使能控制信号来控制 可控开关的导通、 截止, 有利于筒化控制电路, 节省开发成本; 另外, 使能控 制信号的方波一般是固定的, 即每个使能控制信号的方波持续时间保持不变, 这样可控开关每次导通持续的时间也是固定的, 每个子像素的有效显示时间也 将保持不变, 因此每个子像素的充电量基本一致, 有利于进一步抑制色偏的产 生, 具体驱动波形参见图 6。
监控单元 5还可以包括可调节使能控制信号占空比的转换组件 7。通常使能 控制信号都是一个固定占空比的周期信号, 且占空比比较小, 即高电平持续的 时间 4艮短, 在这么短的一个时间内, 像素电极充电量 ^艮难保障, 从而造成显示 异常; 增加转换组件 7 以后就可以根据需要随意调整使能控制信号的占空比, 让像素电极有充足的充电时间, 达到预定的电位, 确保显示质量。
如图 7所示, 延迟组件 6包括并联设置的第一开关组 8、 第二开关组 9、 第 三开关组 10、 第四开关组 11;
第一开关组 8包括串联设置的第一可控开关 Q1和第二可控开关 Q2, 第一 可控开关 Q1高电平导通; 并连接一低电平信号 VGL; 第二可控开关 Q2低电平 导通, 并连接一高电平信号 VGHF; 第二开关组 9 包括串联设置的第三可控开
关 Q3和第四可控开关 Q4,第三可控开关 Q3高电平导通; 并连接一低电平信号 VGL; 第四可控开关 Q4低电平导通, 并连接一高电平信号 VGHF; 第三开关组 10包括串联设置的第五可控开关 Q5和第六可控开关 Q6, 第五可控开关 Q5高 电平导通; 并连接一低电平信号 VGL; 第六可控开关 Q6低电平导通, 并连接 一高电平信号 VGHF; 第四开关组 11包括串联设置的第七可控开关 Q7和第八 可控开关 Q8, 第七可控开关 Q7高电平导通; 并连接一低电平信号 VGL; 第八 可控开关 Q8低电平导通, 并连接一高电平信号 VGHF;
使能控制信号耦合到第一可控开关 Q1的控制端,使能控制信号取反后耦合 到第三可控开关 Q3的控制端; 第一可控开关 Q1和第二可控开关 Q2串联的一 端分别耦合到第四可控开关 Q4和第八可控开关 Q8的控制端;第三可控开关 Q3 和第四可控开关 Q4串联的一端分别耦合到第二可控开关 Q2和第六可控开关 Q6 的控制端; 第五可控开关 Q5和第六可控开关 Q6串联的一端耦合到第七可控开 关 Q7的控制端; 第七可控开关 Q7和第八可控开关 Q8串联的一端分别耦合到 第五可控开关 Q5的控制端和控制线。
采用转换组件可以将使能控制信号 OE转换为开关模块的可控开关的控制 信号 A。 当使能控制信号 OE 高电平时, 第一可控开关 Q1 导通, 低电平信号 VGLVGL通过第一可控开关 Q1耦合到第八可控开关 Q8的控制端,第八可控开 关 Q8随之导通, 高电平信号 VGHF通过第八可控开关 Q8耦合到开关模块的可 控开关的控制线, 开关模块导通; 当使能控制信号 OE低电平时, 第三可控开关 Q3导通, 低电平信号 VGL通过第三可控开关 Q3耦合到第六可控开关 Q6的控 制端,然后高电平信号 VGHF通过第六可控开关 Q6耦合到第七可控开关 Q7的 控制端, 第七可控开关 Q7导通, 开关模块的可控开关的控制线通过第七可控开 关 Q7耦合到低电平信号 VGL, 开关模块关断。
当然, 本发明的使能控制信号也可以不经过任何延迟或转换处理, 直接连 接到可控开关的控制端, 可以筒化电路结构, 有利于降低开发和生产成本。
如图 8所示; 本发明还公开一种液晶面板的驱动方法, 液晶面板的驱动电
路包括多条扫描线和多条数据线, 以及驱动数据线的数据驱动模块, 液晶面板 的驱动方法包括步骤:
A: 在数据驱动模块和每条数据线之间加设开关模块,所述开关模块设置在 液晶面板上邻近数据线的一端;
B: 在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线 进行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟 时间后恢复数据驱动模块的信号。
根据上述方法, 可以进一步的改进, 其中, 开关模块包括串联在数据驱动 模块和数据线之间的可控开关、 与可控开关控制端耦合的监控单元; 液晶面板 的驱动电路包括时序控制模块、 监控单元集成在时序控制模块中; 时序控制模 块输出有用于控制上一行扫描线驱动切换到下一行扫描线驱动的使能控制信 号; 相应的, 步骤 A包括: 将开关模块的可控开关串联到数据驱动模块和数据 线之间; 步骤 B 包括: 将使能控制信号耦合到可控开关的控制端, 可控开关在 使能控制信号高电平时导通, 在使能控制信号低电平时关闭。
上一行扫描线驱动切换到下一行扫描线的时候, 数据线输出的图像信号也 从上一个子像素切换到下一个子像素, 因此完全可以利用使能控制信号来控制 可控开关的导通、 截止, 有利于筒化控制电路, 节省开发成本; 另外, 使能控 制信号的方波一般是固定的, 即每个使能控制信号的方波持续时间保持不变, 这样可控开关每次导通持续的时间也是固定的, 每个子像素的有效显示时间也 将保持不变, 因此每个子像素的充电量基本一致, 有利于进一步抑制色偏的产 生。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明, 不 能认定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通 技术人员来说, 在不脱离本发明构思的前提下, 还可以做出若干筒单推演或替 换, 都应当视为属于本发明的保护范围。
Claims
1、 一种液晶面板的驱动电路, 包括控制电路板和液晶面板, 所述液晶面板 设有多条扫描线和多条数据线, 所述控制电路板包括驱动数据线的数据驱动模 块和驱动扫描线的扫描驱动模块, 所述数据驱动模块通过开关模块和每条数据 线耦合; 所述开关模块设置在液晶面板上邻近数据线的一端,
在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线进 行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟时 间后恢复数据驱动模块的信号。
2、 如权利要求 1所述的一种液晶面板的驱动电路, 其中, 所述开关模块包 括串联在数据驱动模块和数据线之间的可控开关、 与可控开关控制端耦合的监 控单元, 所述监控单元设有时间可调的延迟组件;
所述监控单元在上一行扫描线驱动结束并切换到下一行扫描线进行驱动时 控制所述可控开关关闭, 关断所述数据驱动模块的信号, 延迟组件达到预设的 延迟时间后控制所述可控开关导通, 恢复所述数据驱动模块的信号。
3、 如权利要求 2所述的一种液晶面板的驱动电路, 其中, 所述液晶面板的 驱动电路包括时序控制模块, 所述监控单元集成在所述时序控制模块中; 所述 时序控制模块输出有用于控制上一行扫描线驱动切换到下一行扫描线驱动的使 能控制信号; 所述时序控制模块的使能控制信号通过一根控制线耦合到所有可 控开关的控制端。
4、 如权利要求 3所述的一种液晶面板的驱动电路, 其中, 所述监控单元还 包括可调节所述使能控制信号占空比的转换组件。
5、 如权利要求 3所述的一种液晶面板的驱动电路, 其中, 所述延迟组件包 括并联设置的第一开关组、 第二开关组、 第三开关组、 第四开关组;
所述第一开关组包括串联设置的第一可控开关和第二可控开关, 所述第一 可控开关高电平导通; 并连接一低电平信号; 所述第二可控开关低电平导通,
并连接一高电平信号; 所述第二开关组包括串联设置的第三可控开关和第四可 控开关, 所述第三可控开关高电平导通, 并连接一低电平信号; 所述第四可控 开关低电平导通, 并连接一高电平信号; 所述第三开关组包括串联设置的第五 可控开关和第六可控开关, 所述第五可控开关高电平导通, 并连接一低电平信 号; 所述第六可控开关低电平导通, 并连接一高电平信号; 所述第四开关组包 括串联设置的第七可控开关和第八可控开关, 所述第七可控开关高电平导通, 并连接一低电平信号; 所述第八可控开关低电平导通, 并连接一高电平信号; 所述使能控制信号耦合到第一可控开关的控制端, 所述使能控制信号取反 后耦合到第三可控开关的控制端; 所述第一可控开关和第二可控开关串联的一 端分别耦合到第四可控开关和第八可控开关的控制端; 所述第三可控开关和第 四可控开关串联的一端分别耦合到第二可控开关和第六可控开关的控制端; 所 述第五可控开关和第六可控开关串联的一端耦合到第七可控开关的控制端; 所 述第七可控开关和第八可控开关串联的一端分别耦合到第五可控开关的控制端 和所述控制线。
6、 如权利要求 3所述的一种液晶面板的驱动电路, 其中, 所述使能控制信 号通过所述控制线直接连接到所述可控开关的控制端。
7、 如权利要求 2所述的一种液晶面板的驱动电路, 其中, 所述监控单元通 过一根控制线耦合到所有可控开关的控制端。
8、 一种液晶面板的驱动方法, 液晶面板的驱动电路包括多条扫描线和多条 数据线, 以及驱动数据线的数据驱动模块, 液晶面板的驱动方法包括步骤:
A: 在数据驱动模块和每条数据线之间加设开关模块, 所述开关模块设置在 液晶面板上邻近数据线的一端;
B: 在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线 进行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟 时间后恢复数据驱动模块的信号。
9、 如权利要求 8所述的一种液晶面板的驱动方法, 其中, 所述开关模块包
括串联在数据驱动模块和数据线之间的可控开关、 与可控开关控制端耦合的监 控单元; 所述液晶面板的驱动电路包括时序控制模块, 所述监控单元集成在所 述时序控制模块中; 所述时序控制模块输出有用于控制上一行扫描线驱动切换 到下一行扫描线驱动的使能控制信号;
所述步骤 A包括: 将开关模块的可控开关串联到数据驱动模块和数据线之 间;
所述步骤 B 包括: 将使能控制信号耦合到所述可控开关的控制端, 所述可 控开关在使能控制信号高电平时导通, 在使能控制信号低电平时关闭。
10、 一种液晶显示装置, 包括一种液晶面板的驱动电路, 所述液晶面板的 驱动电路包括控制电路板和液晶面板, 所述液晶面板设有多条扫描线和多条数 据线, 所述控制电路板包括驱动数据线的数据驱动模块和驱动扫描线的扫描驱 动模块, 所述数据驱动模块通过开关模块和每条数据线耦合; 所述开关模块设 置在液晶面板上邻近数据线的一端,
在每一个扫描周期内, 在上一行扫描线驱动结束并切换到下一行扫描线进 行驱动时, 所述的开关模块关断数据驱动模块的信号, 并延迟一预设的延迟时 间后恢复数据驱动模块的信号。
11、 如权利要求 10所述的一种液晶显示装置, 其中, 所述开关模块包括串 联在数据驱动模块和数据线之间的可控开关、 与可控开关控制端耦合的监控单 元, 所述监控单元设有时间可调的延迟组件;
所述监控单元在上一行扫描线驱动结束并切换到下一行扫描线进行驱动时 控制所述可控开关关闭, 关断所述数据驱动模块的信号, 延迟组件达到预设的 延迟时间后控制所述可控开关导通, 恢复所述数据驱动模块的信号。
12、 如权利要求 11所述的一种液晶显示装置, 其中, 所述液晶面板的驱动 电路包括时序控制模块, 所述监控单元集成在所述时序控制模块中; 所述时序 控制模块输出有用于控制上一行扫描线驱动切换到下一行扫描线驱动的使能控 制信号; 所述时序控制模块的使能控制信号通过一根控制线耦合到所有可控开
关的控制端。
13、 如权利要求 12所述的一种液晶显示装置, 其中, 所述监控单元还包括 可调节所述使能控制信号占空比的转换组件。
14、 如权利要求 12所述的一种液晶显示装置, 其中, 所述延迟组件包括并 联设置的第一开关组、 第二开关组、 第三开关组、 第四开关组;
所述第一开关组包括串联设置的第一可控开关和第二可控开关, 所述第一 可控开关高电平导通; 并连接一低电平信号; 所述第二可控开关低电平导通, 并连接一高电平信号; 所述第二开关组包括串联设置的第三可控开关和第四可 控开关, 所述第三可控开关高电平导通, 并连接一低电平信号; 所述第四可控 开关低电平导通, 并连接一高电平信号; 所述第三开关组包括串联设置的第五 可控开关和第六可控开关, 所述第五可控开关高电平导通, 并连接一低电平信 号; 所述第六可控开关低电平导通, 并连接一高电平信号; 所述第四开关组包 括串联设置的第七可控开关和第八可控开关, 所述第七可控开关高电平导通, 并连接一低电平信号; 所述第八可控开关低电平导通, 并连接一高电平信号; 所述使能控制信号耦合到第一可控开关的控制端, 所述使能控制信号取反 后耦合到第三可控开关的控制端; 所述第一可控开关和第二可控开关串联的一 端分别耦合到第四可控开关和第八可控开关的控制端; 所述第三可控开关和第 四可控开关串联的一端分别耦合到第二可控开关和第六可控开关的控制端; 所 述第五可控开关和第六可控开关串联的一端耦合到第七可控开关的控制端; 所 述第七可控开关和第八可控开关串联的一端分别耦合到第五可控开关的控制端 和所述控制线。
15、 如权利要求 12所述的一种液晶显示装置, 其中, 所述使能控制信号通 过所述控制线直接连接到所述可控开关的控制端。
16、 如权利要求 11所述的一种液晶显示装置, 其中, 所述监控单元通过一 根控制线耦合到所有可控开关的控制端。
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| CN109192160A (zh) * | 2018-09-30 | 2019-01-11 | 惠科股份有限公司 | 一种显示面板的驱动方法、系统及显示装置 |
| CN109473055A (zh) * | 2018-12-11 | 2019-03-15 | 深圳市华星光电半导体显示技术有限公司 | 显示装置及其驱动方法 |
| CN111415609B (zh) * | 2020-04-20 | 2023-03-31 | Tcl华星光电技术有限公司 | 显示面板的亮度的调整方法及其装置及电子设备 |
| TWI818546B (zh) * | 2022-05-20 | 2023-10-11 | 友達光電股份有限公司 | 驅動裝置 |
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| CN101620828B (zh) * | 2008-07-04 | 2012-02-08 | 群康科技(深圳)有限公司 | 液晶显示装置及其驱动方法 |
| CN101882416A (zh) * | 2010-06-21 | 2010-11-10 | 友达光电股份有限公司 | 显示装置及其残影消除方法 |
-
2012
- 2012-12-20 CN CN201210558514.XA patent/CN103050103B/zh not_active Expired - Fee Related
- 2012-12-24 WO PCT/CN2012/087274 patent/WO2014094322A1/zh not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5801673A (en) * | 1993-08-30 | 1998-09-01 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for driving the same |
| CN1987990A (zh) * | 2005-12-22 | 2007-06-27 | 株式会社日立显示器 | 显示装置 |
| CN101202024A (zh) * | 2006-12-11 | 2008-06-18 | 三星电子株式会社 | 补偿栅极驱动信号的延迟的液晶显示装置、系统和方法 |
| CN102402957A (zh) * | 2011-11-15 | 2012-04-04 | 深圳市华星光电技术有限公司 | Lcd数据驱动ic输出补偿电路及补偿方法 |
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| CN103050103A (zh) | 2013-04-17 |
| CN103050103B (zh) | 2016-03-09 |
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