WO2018072310A1 - 一种阵列基板、液晶显示器及显示装置 - Google Patents

一种阵列基板、液晶显示器及显示装置 Download PDF

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Publication number
WO2018072310A1
WO2018072310A1 PCT/CN2016/111464 CN2016111464W WO2018072310A1 WO 2018072310 A1 WO2018072310 A1 WO 2018072310A1 CN 2016111464 W CN2016111464 W CN 2016111464W WO 2018072310 A1 WO2018072310 A1 WO 2018072310A1
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Prior art keywords
voltage
adjustable resistor
liquid crystal
resistance
gate
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PCT/CN2016/111464
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English (en)
French (fr)
Inventor
郭平昇
陈宥烨
朱立伟
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深圳市华星光电技术有限公司
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Priority to US15/535,403 priority Critical patent/US10446100B2/en
Publication of WO2018072310A1 publication Critical patent/WO2018072310A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—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
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • 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
    • 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
    • G09G3/3674—Details of drivers for scan electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202—Addressing of scan or signal lines
    • G09G2310/0213—Addressing of scan or signal lines controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • 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
    • 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
    • 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
    • G09G2320/06—Adjustment of display parameters

Definitions

  • the present invention relates to liquid crystal display technology, and in particular to an array substrate, a liquid crystal display, and a display device.
  • TFT-LCD Thin Film Transistor Liquid Crystal Display
  • the liquid crystal display comprises a liquid crystal panel having a plurality of gate drivers on one side thereof, the plurality of gate drivers being connected in series by a trace and electrically connected to the printed circuit board via a connection circuit.
  • the printed circuit board can provide a plurality of gate driver-control signals such that the plurality of gate drivers drive the liquid crystal panel to display an image.
  • a plurality of gate drivers on the array substrate are connected in a series mode, and a voltage drop occurs between the adjacent gate drivers due to the voltage division of the traces and the output current of the gate driver.
  • the voltage on the gate driver closer to the printed circuit board is greater.
  • the number of gate drivers and the output current of a single gate driver also increases, and the voltage drop generated by the traces between adjacent gate drivers increases. Large, this pressure drop will cause the screen to appear horizontal dividing line, which makes the picture distorted, especially when displaying low gray level pictures, which seriously affects the display effect.
  • Another object of the present invention is to provide a liquid crystal display using the above array substrate.
  • Another object of the present invention is to provide a display device using the above liquid crystal display.
  • the present invention provides an array substrate including a timing controller and a plurality of gate drivers, each of the gate drivers including a first adjustable resistor and a gate driving unit, the first adjustable resistor being connected at one end a voltage, the other end of the first adjustable resistor is connected to the first input end of the gate driving unit, and the timing controller is connected to the first adjustable resistance control end to adjust the first adjustable resistor
  • the resistance is such that the voltage difference between the plurality of gate driving units is within a preset range.
  • the gate driver further includes a second adjustable resistor, the gate driving unit includes a second input end, and the second adjustable resistor is connected to the second voltage at one end, wherein the second voltage is related to the second voltage The first voltage is opposite in polarity, the other end of the second adjustable resistor is connected to the second input end, and the timing controller is connected to the second adjustable resistance control terminal to adjust the second adjustable resistance
  • the resistance is such that a voltage difference between the plurality of gate driving units is within a preset range.
  • the first voltage is a negative voltage
  • the second voltage is a positive voltage
  • an absolute value of the second voltage is greater than an absolute value of the first voltage
  • the first voltage is a negative voltage.
  • the first voltage is a positive voltage
  • the timing controller controls a resistance of the first adjustable resistor in each of the gate drivers to be different, and the first adjustable resistance value decreases in a direction in which the first voltage potential decreases.
  • the present invention provides a liquid crystal display including a liquid crystal panel and an array substrate, the array substrate including a timing controller and a plurality of gate drivers, each of the gate drivers including a first adjustable resistor and a gate driving unit One end of the first adjustable resistor is connected to the first voltage, the other end of the first adjustable resistor is connected to the first input end of the gate driving unit, and the timing controller is connected to the first adjustable resistance control End, in order to adjust the resistance of the first adjustable resistor, such that a voltage difference between the plurality of gate driving units is within a preset range, the gate driving unit is connected to the liquid crystal panel to drive the liquid crystal panel Display the pattern.
  • a printed circuit board is further included for outputting the first voltage to the plurality of gate drivers.
  • the gate driver further includes a second adjustable resistor, the gate driving unit includes a second input end, and the second adjustable resistor is connected to the second voltage at one end, wherein the second voltage is related to the second voltage The first voltage is opposite in polarity, the other end of the second adjustable resistor is connected to the second input end, and the timing controller is connected to the second adjustable resistance control terminal to adjust the second adjustable resistance Resistance value
  • the voltage difference between the plurality of gate driving units is within a preset range.
  • the first voltage is a negative voltage
  • the second voltage is a positive voltage
  • an absolute value of the second voltage is greater than an absolute value of the first voltage
  • the first voltage is a negative voltage.
  • the first voltage is a positive voltage
  • the timing controller controls a resistance of the first adjustable resistor in each of the gate drivers to be different, and the first adjustable resistance value decreases in a direction in which the first voltage potential decreases.
  • the present invention provides a display device including a liquid crystal display including a liquid crystal panel and an array substrate, the array substrate including a timing controller and a plurality of gate drivers, each of the gate drivers including the first An adjustable resistor and a gate driving unit, the first adjustable resistor is connected to the first voltage at one end, the other end of the first adjustable resistor is connected to the first input end of the gate driving unit, and the timing controller is connected
  • the first adjustable resistance control terminal is configured to adjust a resistance of the first adjustable resistor such that a voltage difference between the plurality of gate driving units is within a preset range, and the gate driving unit is connected to the
  • the liquid crystal panel drives the liquid crystal panel to display a pattern.
  • a printed circuit board is further included for outputting the first voltage to the plurality of gate drivers.
  • the gate driver further includes a second adjustable resistor, the gate driving unit includes a second input end, and the second adjustable resistor is connected to the second voltage at one end, wherein the second voltage is related to the second voltage The first voltage is opposite in polarity, the other end of the second adjustable resistor is connected to the second input end, and the timing controller is connected to the second adjustable resistance control terminal to adjust the second adjustable resistance
  • the resistance is such that a voltage difference between the plurality of gate driving units is within a preset range.
  • the first voltage is a negative voltage
  • the second voltage is a positive voltage
  • an absolute value of the second voltage is greater than an absolute value of the first voltage
  • the first voltage is a negative voltage.
  • the first voltage is a positive voltage
  • the timing controller controls a resistance of the first adjustable resistor in each of the gate drivers to be different, and the first adjustable resistance value decreases in a direction in which the first voltage potential decreases.
  • a first adjustable resistance is added between the first voltage and the gate driving unit, and the resistance of the first adjustable resistor is controlled by the timing controller so that the voltages of the adjacent gate drivers are the same. , thereby avoiding the occurrence of horizontal dividing lines and improving defects such as uneven brightness and picture distortion. Improved display.
  • the liquid crystal display and the display device of the invention can avoid defects such as uneven display brightness and distortion of the screen caused by different voltages applied on different gate driving units.
  • FIG. 1 is a schematic structural view of an array substrate according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural view of an array substrate according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a liquid crystal display according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of a display device according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of an array substrate according to an embodiment of the present invention.
  • the array substrate 200 includes a timing controller 210 and a plurality of gate drivers 220.
  • Each of the gate drivers 220 includes a first adjustable resistor Ra1 and a gate driving unit 221, and the first adjustable resistor Ra1 is connected at one end. a voltage, the first input end of the first adjustable resistor Ra1 is the first input end of the gate driving unit 221.
  • the first voltage is output to the gate driving unit 221 through the first adjustable resistor Ra1, and the gate driving unit 221 is further configured to receive a second voltage.
  • the first voltage is a low level voltage VGL
  • the second voltage is a high level voltage VGH.
  • the first voltage is a negative voltage and the second voltage is a positive voltage.
  • the timing controller 210 is connected to the control end of the first adjustable resistor Ra1 to adjust the resistance of the first adjustable resistor Ra1.
  • the voltage applied to the gate driver 220 is further changed such that the voltage difference between the plurality of gate driving units is within a preset range.
  • the preset range can be preset, for example, it can be 0V, 0.3V, 0.4V, 1V...
  • the first voltage and the second voltage have opposite polarities, and the two cannot be simultaneously input to the gate driver 220.
  • the gate driving unit 221 When the timing controller 210 receives the high-level voltage VGH output by the timing controller 210, the gate driving unit 221 correspondingly outputs a high-level gate driving signal to connect the thin film transistor connected thereto, so as to The thin film transistor is charged.
  • the timing controller 210 receives the low level voltage VGL output by the timing controller 210, the gate driving unit 221 correspondingly outputs a low level gate driving signal to turn off the thin film transistor connected thereto.
  • should be guaranteed. That is, the absolute value of the second voltage is greater than the absolute value of the first voltage.
  • the first power signal and the second power signal are provided by a printed circuit board.
  • the printed circuit board outputs the first voltage and the second voltage to each of the gate drivers 220. It can be understood that, the further the distance from the printed circuit board, the longer the length of the trace, and the larger the resistance, the smaller the voltage obtained by the gate driver 220 is. Therefore, the timing controller 210 controls the first adjustable resistor Ra1 in each of the gate drivers 220 such that the resistance of the first adjustable resistor Ra1 in the gate driver 220 away from the printed circuit board is smaller, closer to The resistance of the first adjustable resistor Ra1 in the gate driver 220 of the printed circuit board is larger. In other words, the timing controller 210 controls the resistance of the first adjustable resistor Ra1 in each of the gate drivers 220 to be different, and the first adjustable resistor Ra1 has a resistance along the first voltage. The direction of the potential drop is decreasing.
  • the low level voltage VGL is output to the gate driving unit through the first adjustable resistor, and the timing controller controls the resistance of the first adjustable resistor so that the voltage of the adjacent gate driver The same, thereby avoiding the appearance of horizontal dividing lines, improving defects such as uneven brightness and picture distortion, and improving the display effect.
  • the array substrate 200 further includes a second adjustable resistor Ra2.
  • One end of the second adjustable resistor Ra2 is connected to the second voltage, and the other end of the second adjustable resistor Ra2 is connected to the second input end.
  • the second voltage is output to the gate driving unit 221 through the second adjustable resistor Ra2.
  • the timing controller 210 is connected to the second adjustable resistor Ra2 control terminal to adjust the resistance of the second adjustable resistor Ra2.
  • the timing controller 210 controls the resistance of the second adjustable resistor Ra2 to To adjust the voltage applied to the gate driver 220.
  • the second adjustable resistor Ra2 can assist the first adjustable resistor Ra1 to perform voltage regulation.
  • the timing controller 210 controls the resistance values of the first adjustable resistor Ra1 and/or the second adjustable resistor Ra2 in each of the gate drivers 220 to be different.
  • the specific resistance can be determined during the debugging process and then stored in the storage unit. After the timing controller 210 reads the adjustment data in the storage unit, the resistance values of the first adjustable resistor Ra1 and/or the second adjustable resistor Ra2 in each of the gate drivers 220 are adjusted accordingly.
  • FIG. 2 is a schematic structural diagram of an array substrate according to another embodiment of the present invention.
  • the array substrate 300 includes a timing controller 310 and a plurality of gate drivers 320, each of the gate drivers 320 including a first adjustable resistor Ra1 and a gate driving unit 321, and the first adjustable resistor Ra1 is used for receiving
  • the first voltage is output to the gate driving unit 321 through the first adjustable resistor Ra1, and the gate driving unit 321 is further configured to receive the second voltage.
  • the first voltage is a high level voltage VGH
  • the second voltage is a low level voltage VGL. In other words, the first voltage is a positive voltage and the second voltage is a negative voltage.
  • the timing controller 310 is connected to the control end of the first adjustable resistor Ra1 to adjust the resistance of the first adjustable resistor Ra1.
  • the voltage applied to the gate driver 320 is further changed such that the voltage difference between the plurality of gate driving units is within a preset range. Normally, the
  • the high level voltage VGH is output to the gate driving unit through the first adjustable resistor, and the timing controller controls the resistance of the first adjustable resistor so that the voltages of the adjacent gate drivers are the same. Therefore, the appearance of horizontal dividing lines is avoided, defects such as uneven brightness and picture distortion are improved, and the display effect is improved.
  • the timing controller controls the resistance of the first adjustable resistor in the gate driver so that the voltages applied to the plurality of gate drivers are substantially the same, thereby avoiding different voltages applied to different gate drivers.
  • the display brightness is uneven, the picture is distorted, and the like, which improves the display effect.
  • FIG. 3 is a schematic structural diagram of a liquid crystal display according to an embodiment of the present invention.
  • the present invention also provides a liquid crystal display 500 comprising a liquid crystal panel 501, an array substrate 502, and a printed circuit board 503.
  • the array substrate 502 is the array substrate in any of the above embodiments.
  • the printed circuit board 503 is used to supply the array substrate 502 with a first voltage and a second voltage.
  • the printed circuit board 503 It is connected to the array substrate 502 through a connection circuit 504.
  • the array substrate 502 is connected to the liquid crystal panel 501 to drive the liquid crystal panel 501 to display a pattern.
  • FIG. 4 is a block diagram of a display device according to an embodiment of the present invention.
  • the present invention also provides a display device 600 comprising the liquid crystal display 500 described above.
  • the display device 600 can be, but is not limited to, any electronic device having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
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  • Theoretical Computer Science (AREA)
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Abstract

一种阵列基板（200），包括时序控制器（210）和多个栅极驱动器（220），每个栅极驱动器（220）包括第一可调电阻（Ra1）和栅极驱动单元（221），第一可调电阻（Ra1）一端连接第一电压，第一可调电阻（Ra1）另一端连接栅极驱动单元（221）的第一输入端，时序控制器（210）连接第一可调电阻（Ra1）控制端，以调节第一可调电阻（Ra1）的阻值，使得多个栅极驱动单元（221）间的电压差值位于预设范围内。在栅极驱动器（220）中，在第一电压与栅极驱动单元（221）之间增加第一可调节电阻（Ra1），通过时序控制器（210）控制第一可调电阻（Ra1）的阻值，使得相邻栅极驱动器（220）的电压相同，从而避免了水平分界线的出现，改善亮度不均匀、画面失真等缺陷，提升了显示效果。

Description

一种阵列基板、液晶显示器及显示装置
本发明要求2016年10月20日递交的发明名称为“一种阵列基板、液晶显示器及显示装置”的申请号201610919363.4的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶显示技术，尤其涉及一种阵列基板、液晶显示器及显示装置。
背景技术
薄膜晶体管液晶显示器(Thin Film Transistor Liquid Crystal Display，简称TFT-LCD)由于其低成本、高良率以及良好的显示效果，使得其在中小尺寸领域，占据着绝大部分的市场份额。
现有技术中，液晶显示器包含液晶面板，在其一侧有多个栅极驱动器，该多个栅极驱动器通过走线串联起来，并经过连接电路电性连接至印刷电路板上。该印刷电路板可提供该多个栅极驱动器一控制信号，从而使该多个栅极驱动器驱动液晶面板显示图像。
现有技术中阵列基板上的多个栅极驱动器以串联模式连接，由于走线的分压及栅极驱动器输出电流的作用，使得相邻的栅极驱动器之间的走线产生压降,导致越靠近印刷电路板的栅极驱动器上的电压越大。随着液晶显示器朝着大型化和高分辨率的趋势，栅极驱动器的数量以及单颗栅极驱动器的输出电流也随之增加，相邻栅极驱动器之间的走线产生的压降进一步增大，此压降会导致画面出现水平分界线，使得画面失真，在显示低灰阶画面时尤其明显，严重影响了显示效果。
发明内容
本发明的目的在于提供一种阵列基板，该阵列基板上的多个栅极驱动器的输入电压相同，避免由于栅极驱动器的输入电压不相同产生的画面失真不良。
本发明的另一目的在于提供一种采用上述阵列基板的液晶显示器。
本发明的另一目的在于提供一种采用上述液晶显示器的显示装置。
为了实现上述目的，本发明实施方式提供如下技术方案：
本发明提供一种阵列基板，其中，包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控制端，以调节所述第一可调电阻的阻值，使得多个栅极驱动单元间的电压差值位于预设范围内。
其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
其中，所述第一电压为负电压。
其中，所述第一电压为正电压。
其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
本发明提供一种液晶显示器，其中，包括液晶面板和阵列基板，所述阵列基板包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控制端，以调节所述第一可调电阻的阻值，使得多个栅极驱动单元间的电压差值位于预设范围内，所述栅极驱动单元连接所述液晶面板以驱动所述液晶面板显示图案。
其中，还包括印刷电路板，用于输出所述第一电压至所述多个栅极驱动器。
其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所 述多个栅极驱动单元间的电压差值位于预设范围内。
其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
其中，所述第一电压为负电压。
其中，所述第一电压为正电压。
其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
本发明提供一种显示装置，其中，包括液晶显示器，所述液晶显示器包括液晶面板和阵列基板，所述阵列基板包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控制端，以调节所述第一可调电阻的阻值，使得多个栅极驱动单元间的电压差值位于预设范围内，所述栅极驱动单元连接所述液晶面板以驱动所述液晶面板显示图案。
其中，还包括印刷电路板，用于输出所述第一电压至所述多个栅极驱动器。
其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
其中，所述第一电压为负电压。
其中，所述第一电压为正电压。
其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
本发明实施例具有如下优点或有益效果：
本发明中在栅极驱动器中，在第一电压与栅极驱动单元之间增加第一可调节电阻，通过时序控制器控制第一可调电阻的阻值，使得相邻栅极驱动器的电压相同，从而避免了水平分界线的出现，改善亮度不均匀、画面失真等缺陷， 提升了显示效果。本发明的液晶显示器及显示装置可以避免了不同栅极驱动单元上加载的电压不同造成的显示亮度不均匀，画面失真等缺陷。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明一种实施方式的阵列基板的结构示意图。
图2为本发明另一种实施方式的阵列基板的结构示意图。
图3为本发明实施例提供的液晶显示器结构示意图。
图4为本发明实施例提供的显示装置框图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，图1为本发明一种实施方式的阵列基板的结构示意图。阵列基板200包括时序控制器210和多个栅极驱动器220，每个所述栅极驱动器220均包括第一可调电阻Ra1和栅极驱动单元221，所述第一可调电阻Ra1一端连接第一电压，所述第一可调电阻Ra1另一端所述栅极驱动单元221的第一输入端。所述第一电压通过所述第一可调电阻Ra1输出至所述栅极驱动单元221，所述栅极驱动单元221还用于接收第二电压。其中，所述第一电压为低准位电压VGL，所述第二电压为高准位电压VGH。换而言之，所述第一电压为负电压且所述第二电压为正电压。所述时序控制器210连接所述第一可调电阻Ra1的控制端，以调节所述第一可调电阻Ra1的阻值。进而改变加载在所述栅极驱动器220的电压，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
可以理解的是，预设的范围可以预先设定，例如，可以为0V，0.3V，0.4V，1V……
可以理解的是，所述第一电压和所述第二电压的极性相反，且两者不能同时输入至所述栅极驱动器220。当所述时序控制器210接收到所述时序控制器210输出的高准位电压VGH时，栅极驱动单元221对应输出高准位栅极驱动信号，以连通与之连接的薄膜晶体管，以便对薄膜晶体管进行充电。当所述时序控制器210接收到所述时序控制器210输出的低准位电压VGL时，栅极驱动单元221对应输出低准位栅极驱动信号，以关闭与之连接的薄膜晶体管。通常情况下，应当保证|高准位电压VGH|＞|低准位电压VGL|。即：所述第二电压的绝对值大于所述第一电压的绝对值。
具体的，所述第一电源信号和所述第二电源信号由一印刷电路板提供。所述印刷电路板向每一所述栅极驱动器220中输出所述第一电压和所述第二电压。可以理解的是，所述多个栅极驱动器220中，离所述印刷电路板的距离越远，走线的长度越长，电阻越大，栅极驱动器220获得的电压也就越小。因此所述时序控制器210控制各栅极驱动器220中的第一可调电阻Ra1，应使得远离所述印刷电路板的栅极驱动器220中的第一可调电阻Ra1的阻值越小，靠近所述印刷电路板的栅极驱动器220中的第一可调电阻Ra1的阻值越大。换而言之，所述时序控制器210控制每个所述栅极驱动器220中的第一可调电阻Ra1的阻值不同，且所述第一可调电阻Ra1阻值沿所述第一电压电势下降方向递减。
本实施方式中，在栅极驱动器中低准位电压VGL通过第一可调节电阻后输出至栅极驱动单元，时序控制器控制第一可调电阻的阻值，使得相邻栅极驱动器的电压相同，从而避免了水平分界线的出现，改善亮度不均匀、画面失真等缺陷，提升了显示效果。
可选的，所述阵列基板200还包括第二可调电阻Ra2，所述第二可调电阻Ra2一端连接第二电压，所述第二可调电阻Ra2另一端连接所述第二输入端。所述第二电压通过所述第二可调电阻Ra2输出至所述栅极驱动单元221。所述时序控制器210连接所述第二可调电阻Ra2控制端，以调节所述第二可调电阻Ra2的阻值。所述时序控制器210通过控制第二可调电阻Ra2的阻值，从而达 到调节加载在所述栅极驱动器220的电压的目的。所述第二可调电阻Ra2可以辅助所述第一可调电阻Ra1进行电压调节。
可以理解的是，所述时序控制器210控制每个所述栅极驱动器220中的第一可调电阻Ra1和/或第二可调电阻Ra2的阻值不同。具体的阻值可以在调试过程中确定，然后存储在存储单元中。所述时序控制器210读取存储单元中的调节数据后，相应调节每个栅极驱动器220中第一可调电阻Ra1和/或第二可调电阻Ra2的阻值。
请参阅图2，图2为本发明另一种实施方式的阵列基板的结构示意图。阵列基板300包括时序控制器310和多个栅极驱动器320，每个所述栅极驱动器320均包括第一可调电阻Ra1和栅极驱动单元321，所述第一可调电阻Ra1用于接收第一电压，所述第一电压通过所述第一可调电阻Ra1输出至所述栅极驱动单元321，所述栅极驱动单元321还用于接收第二电压。其中，所述第一电压为高准位电压VGH，所述第二电压为低准位电压VGL。换而言之，所述第一电压为正电压且所述第二电压为负电压。所述时序控制器310连接所述第一可调电阻Ra1的控制端，以调节所述第一可调电阻Ra1的阻值。进而改变加载在所述栅极驱动器320的电压，使得所述多个栅极驱动单元间的电压差值位于预设范围内。通常情况下，应当保证|高准位电压VGH|＞|低准位电压VGL|。即：所述第一电压的绝对值大于所述第二电压的绝对值。
本实施方式中，在栅极驱动器中高准位电压VGH通过第一可调节电阻后输出至栅极驱动单元，时序控制器控制第一可调电阻的阻值，使得相邻栅极驱动器的电压相同，从而避免了水平分界线的出现，改善亮度不均匀、画面失真等缺陷，提升了显示效果。
本发明的阵列基板中，时序控制器控制栅极驱动器中的第一可调电阻的阻值，使得多个栅极驱动器上加载的电压大致相同，从而避免了不同栅极驱动器上加载的电压不同造成的显示亮度不均匀，画面失真等缺陷，提升了显示效果。
请参阅图3，图3为本发明实施例提供的液晶显示器结构示意图。本发明的还提供一种液晶显示器500，包括液晶面板501、阵列基板502和印刷电路板503。其中，阵列基板502为上述任一实施方式中的阵列基板。所述印刷电路板503用于为阵列基板502提供第一电压和第二电压。所述印刷电路板503 通过连接电路504与阵列基板502连接。阵列基板502连接所述液晶面板501以驱动所述液晶面板501显示图案。
请参阅图4，图4为本发明实施例提供的显示装置框图。本发明还提供一种显示装置600，包括上述的液晶显示器500。可以理解的是，显示装置600可以但不限为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的电子装置。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。

Claims (20)

  1. 一种阵列基板，其中，包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控制端，以调节所述第一可调电阻的阻值，使得多个栅极驱动单元间的电压差值位于预设范围内。
  2. 如权利要求1所述的阵列基板，其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
  3. 如权利要求2所述的阵列基板，其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
  4. 如权利要求1所述的阵列基板，其中，所述第一电压为负电压。
  5. 如权利要求1所述的阵列基板，其中，所述第一电压为正电压。
  6. 如权利要求1所述的阵列基板，其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
  7. 一种液晶显示器，其中，包括液晶面板和阵列基板，所述阵列基板包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控 制端，以调节所述第一可调电阻的阻值，使得多个栅极驱动单元间的电压差值位于预设范围内，所述栅极驱动单元连接所述液晶面板以驱动所述液晶面板显示图案。
  8. 如权利要求7所述的液晶显示器，其中，还包括印刷电路板，用于输出所述第一电压至所述多个栅极驱动器。
  9. 如权利要求7所述的液晶显示器，其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
  10. 如权利要求9所述的液晶显示器，其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
  11. 如权利要求7所述的液晶显示器，其中，所述第一电压为负电压。
  12. 如权利要求7所述的液晶显示器，其中，所述第一电压为正电压。
  13. 如权利要求7所述的液晶显示器，其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
  14. 一种显示装置，其中，包括液晶显示器，所述液晶显示器包括液晶面板和阵列基板，所述阵列基板包括时序控制器和多个栅极驱动器，每个所述栅极驱动器包括第一可调电阻和栅极驱动单元，所述第一可调电阻一端连接第一电压，所述第一可调电阻另一端连接所述栅极驱动单元的第一输入端，所述时序控制器连接所述第一可调电阻控制端，以调节所述第一可调电阻的阻值， 使得多个栅极驱动单元间的电压差值位于预设范围内，所述栅极驱动单元连接所述液晶面板以驱动所述液晶面板显示图案。
  15. 如权利要求14所述的显示装置，其中，还包括印刷电路板，用于输出所述第一电压至所述多个栅极驱动器。
  16. 如权利要求14所述的显示装置，其中，所述栅极驱动器还包括第二可调电阻，所述栅极驱动单元包括第二输入端，所述第二可调电阻一端连接第二电压，其中，所述第二电压与所述第一电压极性相反，所述第二可调电阻另一端连接所述第二输入端，所述时序控制器连接所述第二可调电阻控制端，以调节所述第二可调电阻的阻值，使得所述多个栅极驱动单元间的电压差值位于预设范围内。
  17. 如权利要求16所述的显示装置，其中，所述第一电压为负电压，所述第二电压为正电压，且所述第二电压的绝对值大于所述第一电压的绝对值。
  18. 如权利要求14所述的显示装置，其中，所述第一电压为负电压。
  19. 如权利要求14所述的显示装置，其中，所述第一电压为正电压。
  20. 如权利要求14所述的显示装置，其中，所述时序控制器控制每个所述栅极驱动器中的第一可调电阻阻值不同，且所述第一可调电阻阻值沿所述第一电压电势下降方向递减。
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