WO2016179851A1 - 显示面板及其驱动方法 - Google Patents

显示面板及其驱动方法 Download PDF

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Publication number
WO2016179851A1
WO2016179851A1 PCT/CN2015/079368 CN2015079368W WO2016179851A1 WO 2016179851 A1 WO2016179851 A1 WO 2016179851A1 CN 2015079368 W CN2015079368 W CN 2015079368W WO 2016179851 A1 WO2016179851 A1 WO 2016179851A1
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gate
data
line
display panel
driver
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PCT/CN2015/079368
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English (en)
French (fr)
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吴晶晶
熊志
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深圳市华星光电技术有限公司
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Priority to US14/761,091 priority Critical patent/US20160335963A1/en
Publication of WO2016179851A1 publication Critical patent/WO2016179851A1/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
    • G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • 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
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • 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
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components

Definitions

  • the present invention relates to the field of liquid crystal display technologies, and in particular to the field of driving technologies for liquid crystal display panels, and more particularly to a display panel and a driving method thereof.
  • the display panel controls the deflection of the liquid crystal molecules according to the received gray scale voltage, thereby allowing three colors of R (Red, Red), G (Green, Green), and B (Blue) to pass through to display a picture.
  • R Red, Red
  • G Green, Green
  • B Blue
  • the wavelengths of the red, green and blue lights are different, resulting in different transmittances.
  • it is necessary to adjust the gamma curve corresponding to the three color lights (gamma curve). that is, the gray scale voltage-transmittance curve, so that the transmittance of the three colors of light is the same when the same gray scale voltage is applied.
  • the existing scheme generally uses the white balance module in the Timing Control IC (TCON) to adjust the Gamma curve corresponding to the red, green and blue light by algorithmic calculation, which is essentially the red, green and blue light.
  • TCON Timing Control IC
  • the corresponding sub-pixels are adjusted. For example, if the display screen has 256 gray levels, it is necessary to apply 3 ⁇ 256 gray scale voltages to all sub-pixels corresponding to the red, green and blue light, that is, 3 ⁇ 256 storage units are required. In order to store the adjustment value of the gray scale voltage corresponding to the three color lights, the hardware cost is high.
  • an embodiment of the present invention provides a display panel and a driving method thereof, which can drive a display panel at a lower hardware cost, so that sub-pixels corresponding to three colors of red, green, and blue light are applied with the same gray scale voltage.
  • the penetration rate is the same.
  • An embodiment of the invention provides a display panel.
  • the display panel includes a plurality of gate lines arranged in a predetermined direction, a gate driver for driving the gate lines, a plurality of data lines insulated from the gate lines, and a data driver for driving the data lines, and timing control
  • the gate line and the data line define a plurality of pixel regions, and each of the pixel regions includes a TFT and a pixel electrode, and each pixel region is connected to a gate line and a data line, and is connected to the same gate.
  • the pixel area of the line allows light of the same color to pass through, the gate of the TFT is connected to the corresponding gate line, and the source of the TFT The pixel is connected to the corresponding data line, and the drain of the TFT is connected to the pixel electrode.
  • the gate driver sequentially drives the gate line, and the data driver synchronously performs the gray scale driving operation on the data line to connect to the same gate.
  • the pixel area of the line applies the same Gamma voltage, and the timing controller informs the gate driver of the Gamma voltage applied to the pixel region connected to the next gate line during the blank time during which the gate driver drives the adjacent two gate lines. .
  • the timing controller and the data driver are connected through an I2C bus.
  • the pixel regions connected to the respective gate lines sequentially allow light of three colors of red R, green G, and blue B to pass through, and circulate in a direction parallel to the gate lines.
  • An embodiment of the invention provides a display panel.
  • the display panel includes a plurality of gate lines arranged in a predetermined direction, a gate driver for driving the gate lines, a plurality of data lines insulated from the gate lines, and a data driver for driving the data lines, the gate
  • the line and the data line define a plurality of pixel regions, and each pixel region is connected to one gate line and one data line, and the pixel region connected to the same gate line allows light of the same color to pass through, and is displayed on the screen.
  • the gate driver sequentially drives the gate lines, and the data driver applies the same Gamma voltage to the pixel regions connected to the same gate line.
  • the display panel further includes a timing controller, and the timing controller notifies the gate driver of the Gamma voltage applied to the pixel region connected to the next gate line during the blank time of the gate driver driving the adjacent two gate lines.
  • the timing controller and the data driver are connected through an I2C bus.
  • the pixel regions connected to the respective gate lines sequentially allow light of three colors of red R, green G, and blue B to pass through, and circulate in a direction parallel to the gate lines.
  • the display panel further includes a TFT and a pixel electrode in each pixel region, the gate of the TFT is connected to the corresponding gate line, the source of the TFT is connected to the corresponding data line, the drain of the TFT is connected to the pixel electrode, and the data driver is in the gate.
  • the gate driver sequentially drives the gate lines, the gray scale driving operation is performed on the data lines in synchronization to apply the same Gamma voltage to the pixel regions connected to the same gate line.
  • the display panel includes a plurality of gate lines arranged in a predetermined direction, a gate driver for driving the gate lines, a plurality of data lines insulated from the gate lines, and a data driver for driving the data lines.
  • the polar line and the data line define a plurality of pixel areas, and each pixel area is connected to one gate line and one data line.
  • the pixel regions connected to the same gate line allow light of the same color to pass through, the driving method includes: the gate driver sequentially drives the gate lines; and the data driver applies the same Gamma to the pixel regions connected to the same gate line Voltage.
  • the display panel further comprises a timing controller, wherein the timing controller informs the gate driver to apply Gamma to the pixel region connected to the next one of the gate lines during a blank time when the gate driver drives the adjacent two gate lines Voltage.
  • the timing controller and the data driver are connected through an I2C bus.
  • the pixel regions connected to the respective gate lines sequentially allow light of three colors of red R, green G, and blue B to pass through, and circulate in a direction parallel to the gate lines.
  • the display panel further includes a TFT and a pixel electrode in each pixel region, the gate of the TFT is connected to the corresponding gate line, the source of the TFT is connected to the corresponding data line, the drain of the TFT is connected to the pixel electrode, and the data driver is in the gate.
  • the gate driver sequentially drives the gate lines, the gray scale driving operation is performed on the data lines in synchronization to apply the same Gamma voltage to the pixel regions connected to the same gate line.
  • the pixel region connected to the same gate line is allowed to transmit light of the same color, and the same Gamma is applied to a plurality of pixel regions connected to the same gate line during driving.
  • the voltage does not need to separately apply a gray scale voltage to each pixel region, so that the storage unit for storing the adjustment value of the gray scale voltage corresponding to the red R, green G, and blue B light is not required, and the hardware cost is low.
  • FIG. 1 is a schematic diagram of a pixel structure of a display panel according to an embodiment of the invention.
  • FIG. 2 is a schematic diagram of a driving circuit of a display panel according to an embodiment of the invention.
  • FIG. 3 is a flow chart showing a driving method according to an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a pixel structure of a display panel according to an embodiment of the invention.
  • the (liquid crystal) display panel 1 includes a gate driver 111, data driver 112, are arranged in a predetermined direction spaced plurality of gate lines G 1, G 2, ..., G n and a plurality of The gate lines G 1 , G 2 , . . . , G n are insulated from the data lines D 1 , D 2 , . . . , D m , wherein the plurality of gate lines G 1 , G 2 , . . . , G n and a plurality of data lines D 1 , D 2 , . . . , D m define a plurality of pixel regions 113 arranged in an array manner.
  • Each of the pixel regions 113 is connected to a gate line and a data line.
  • Each of the pixel regions 113 includes a thin film transistor (TFT) T and a pixel electrode P.
  • the thin film transistor T includes a gate g, a source s and a drain d, wherein the pixel electrode P is connected to the drain d, the gate line is connected to the gate g, the data line is connected to the source s, and the thin film transistor is connected.
  • T When T is turned on, the data driving signal is transmitted to the corresponding pixel electrode P via the source s.
  • the gate driver 111 sequentially for the plurality of gate lines G 1, G 2, ..., G n provides gate drive signal to turn on the plurality of gate lines G 1, G 2, ..., G n execution
  • the gate driving action activates the thin film transistor T corresponding to each gate line
  • the data driver 112 supplies a gray scale driving signal (gray scale voltage) to the plurality of data lines D 1 , D 2 , . . . , D m to A gray scale driving operation is sequentially performed on the plurality of data lines D 1 , D 2 , . . . , D m , and the gray scale driving signal is applied to the corresponding pixel electrode P via the activated thin film transistor T.
  • the data driver 112 synchronously performs the gray scale driving operation on the data lines.
  • the same gate line correspondingly drives the plurality of pixel regions 113.
  • the gate line transmits the gate driving signal
  • the thin film transistors T of the plurality of pixel regions 113 driven by the same gate line are both turned on, and the plurality of data lines D 1 are D 2 , . . . , D m simultaneously transmits gray scale drive signals to the corresponding pixel electrodes P to charge the pixel electrodes P displaying the pixel regions 113 of different colors.
  • a plurality of pixel regions are connected to the same gate line 113 allows the same color of light transmitted through, for example, as shown, connected to the gate lines G 1 pixel region 113 of FIG. 1 allows red light transmission,
  • the pixel region 113 connected to the gate line G 2 allows green light to pass therethrough, and the pixel region 113 connected to the gate line G 3 allows blue light to pass through, and in a direction parallel to the data line, that is, in the column direction, This setting is arranged cyclically.
  • the display panel further includes a timing controller 114.
  • the timing controller 114 and the data driver 112 and the gate driver 111 constitute a driving circuit of the display panel, and the timing controller 114 and the data driver 112 can pass through the I2C bus ( Inter-Integrated Circuit, two-line serial bus) connection.
  • I2C bus Inter-Integrated Circuit, two-line serial bus
  • the gate driver 111 drives the adjacent two During the blanking of the gate line, the timing controller 114 notifies the gate driver 111 of the Gamma voltage applied to the pixel region 113 connected to the next gate line, wherein the Gamma voltage is equivalent to an application to R, The gray scale voltage of the sub-pixel (Sub-Pixel) corresponding to the three color lights of G and B.
  • the gamma code of the gamma voltage of the sub-pixel to which the data driver 112 is to be applied to the R, G, and B colors is written in advance to the EEPROM (Electrically Erasable Programmable Read-Only).
  • the timing controller 114 reads the gamma code and stores it in the RAM (Random Access Memory) of the timing controller 114.
  • the timing controller 114 transmits the gamma code of the corresponding color to the P-Gamma (programmable gamma voltage generating chip) of the data driver 112 through the I2C bus during the blank time during which the gate driver 111 drives the adjacent two gate lines. , thereby generating a gamma voltage to be applied to the sub-pixels in the row direction.
  • the timing controller 114 when the gate line as G 1 in the first row connected to the thin film transistor T is opened, and in a blank period before the charging of the gate line G is connected to the pixel electrode P 1, the timing controller 114 to the red subpixel
  • the corresponding Gamma Code is transferred to the P-Gamma in the data driver 112 via the I2C bus, and the P-Gamma generates the Gamma voltage required for the red sub-pixel, which is used as the DAC module in the data driver 112 (Digital/Analog Change) after digital / analog conversion module) of digital reference voltages
  • the data driver 112 receives a data signal transmitted by the timing controller 114 (data signal), generates a corresponding analog voltage is converted by the DAC module is connected to the gate line G to the pixel electrode 1 P to charge.
  • the timing controller 114 of the embodiment further includes an LVDS RX (Low Voltage Differential Signal) and an LVDS TX (Low Voltage Differential Signal) to transmit related signals.
  • LVDS RX Low Voltage Differential Signal
  • LVDS TX Low Voltage Differential Signal
  • the embodiment can apply the same Gamma voltage to the plurality of pixel regions 113 connected to the same gate line during driving, without separately
  • Each of the pixel regions 113 is respectively applied with a Gamma voltage, so that the memory cell (ie, the white balance register) for storing the adjustment value of the grayscale voltage corresponding to the R, G, and B trichromatic lights in the prior art is not required, and the hardware cost is low.
  • the P-Gamma is built into the data in comparison with the P-Gamma and the data driver in the prior art. In the driver 112, the number of components of the Timing Control Board is reduced, and the cost can be reduced.
  • FIG. 3 is a schematic flow chart of a driving method according to an embodiment of the present invention, which is used to drive a display panel having the pixel structure shown in FIG. 1 to adjust a Gamma curve corresponding to three colors of R, G, and B, so that When the same gray scale voltage is used, the sub-pixels corresponding to the three colors of R, G, and B have the same transmittance.
  • the driving method includes:
  • Step S31 The gate driver sequentially drives the gate lines, wherein the pixel regions connected to the same gate line allow light of the same color to pass through.
  • Step S32 The data driver applies the same Gamma voltage to the pixel regions connected to the same gate line.
  • the driving method of the present embodiment can be performed by the respective components of the display panel.
  • For the specific process refer to the foregoing driving process of the display panel, and details are not described herein again.
  • the core object of the embodiments of the present invention is to design a pixel region connected to the same gate line to allow light of the same color to pass through, and to apply the same to a plurality of pixel regions connected to the same gate line during driving.
  • the gamma voltage does not need to separately apply a gray scale voltage to each pixel region, so that the storage unit for storing the adjustment value of the gray scale voltage corresponding to the red R, green G, and blue B light is not required, and the hardware cost is low.

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Abstract

一种显示面板及其驱动方法。该显示面板包括栅极线（G 1，G 2，….G n）、数据线（D 1，D 2，….D m）、栅极驱动器（111）及数据驱动器（112），栅极线（G 1，G 2，….G n）和数据线（D 1，D 2，….D m）定义出像素区域（113），每一像素区域（113）对应连接一条栅极线（G 1，G 2，….G n）和一条数据线（D 1，D 2，….D m），且连接于同一条栅极线（G 1，G 2，….G n）的像素区域（113）允许相同颜色的光透过，在显示画面时，栅极驱动器（111）依次驱动栅极线（G 1，G 2，….G n），数据驱动器（112）对连接于同一条栅极线（G 1，G 2，….G n）的像素区域（113）施加相同的Gamma电压。能够以较低的硬件成本驱动显示面板，使得不同颜色光对应的子像素在被施加相同的灰阶电压时的穿透率相同。

Description

显示面板及其驱动方法 【技术领域】
本发明涉及液晶显示技术领域，具体涉及液晶显示面板的驱动技术领域，尤其涉及一种显示面板及其驱动方法。
【背景技术】
显示面板根据接收到的灰阶电压控制液晶分子发生偏转，从而允许R(Red，红)、G(Green，绿)、B(Blue，蓝)三色光透过以显示画面。在施加相同的灰阶电压时，红、绿、蓝三色光的波长不同导致穿透率不同，为了确保显示画面的白平衡(White Tracking)，需要调整此三色光对应的Gamma曲线(伽马曲线，即灰阶电压-穿透率曲线)使得在施加相同的灰阶电压时此三色光的穿透率相同。
现有方案普遍利用时序控制芯片(Timing Control IC，TCON)中的白平衡模块通过算法演算对红、绿、蓝三色光对应的Gamma曲线进行调整，其实质上是对红、绿、蓝三色光对应的每一个子像素进行调整，例如显示画面具有256个灰阶，则需要对红、绿、蓝三色光对应的所有子像素施加3×256个灰阶电压，即需要3×256个存储单元以存储此三色光对应的灰阶电压的调整值，硬件成本较高。
【发明内容】
有鉴于此，本发明实施例提供一种显示面板及其驱动方法，能够以较低的硬件成本驱动显示面板，使得红、绿、蓝三色光对应的子像素在被施加相同的灰阶电压时的穿透率相同。
本发明一实施例提供一种显示面板。该显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动栅极线的栅极驱动器、与栅极线绝缘交叉的多条数据线及用于驱动数据线的数据驱动器、时序控制器，栅极线和数据线定义出多个像素区域，且每一像素区域包括一TFT和一像素电极，每一像素区域对应连接一条栅极线和一条数据线，且连接于同一条栅极线的像素区域允许相同颜色的光透过，TFT的栅极连接对应的栅极线，TFT的源 极连接对应的数据线，TFT的漏极连接像素电极，在进行画面显示时，栅极驱动器依次驱动栅极线，数据驱动器同步对数据线执行灰阶驱动动作，以对连接于同一条栅极线的像素区域施加相同的Gamma电压，并且在栅极驱动器驱动相邻两条栅极线的空白时间内，时序控制器告知栅极驱动器施加于连接于后一条栅极线的像素区域的Gamma电压。
其中，时序控制器和数据驱动器之间通过I2C总线连接。
其中，连接于各条栅极线的像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平行于栅极线的方向循环。
本发明一实施例提供一种显示面板。该显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动栅极线的栅极驱动器、与栅极线绝缘交叉的多条数据线及用于驱动数据线的数据驱动器，栅极线和数据线定义出多个像素区域，且每一像素区域对应连接一条栅极线和一条数据线，且连接于同一条栅极线的像素区域允许相同颜色的光透过，在进行画面显示时，栅极驱动器依次驱动栅极线，数据驱动器对连接于同一条栅极线的像素区域施加相同的Gamma电压。
其中，显示面板还包括时序控制器，在栅极驱动器驱动相邻两条栅极线的空白时间内，时序控制器告知栅极驱动器施加于连接于后一条栅极线的像素区域的Gamma电压。
其中，时序控制器和数据驱动器之间通过I2C总线连接。
其中，连接于各条栅极线的像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平行于栅极线的方向循环。
其中，显示面板进一步包括位于每一像素区域的TFT和像素电极，TFT的栅极连接对应的栅极线，TFT的源极连接对应的数据线，TFT的漏极连接像素电极，数据驱动器在栅极驱动器依次驱动栅极线时同步对数据线执行灰阶驱动动作，以对连接于同一条栅极线的像素区域施加相同的Gamma电压。
本发明另一实施例提供一种显示面板的驱动方法。所述显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动栅极线的栅极驱动器、与栅极线绝缘交叉的多条数据线及用于驱动数据线的数据驱动器，栅极线和数据线定义多个像素区域，每一像素区域对应连接一条栅极线和一条数据线， 连接于同一条栅极线的像素区域允许相同颜色的光透过，所述驱动方法包括：栅极驱动器依次驱动栅极线；数据驱动器对连接于同一条栅极线的像素区域施加相同的Gamma电压。
其中，显示面板还包括时序控制器，在栅极驱动器驱动相邻两条栅极线的空白时间内，时序控制器告知栅极驱动器施加于连接于后一条所述栅极线的像素区域的Gamma电压。
其中，时序控制器和数据驱动器之间通过I2C总线连接。
其中，连接于各条栅极线的像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平行于栅极线的方向循环。
其中，显示面板进一步包括位于每一像素区域的TFT和像素电极，TFT的栅极连接对应的栅极线，TFT的源极连接对应的数据线，TFT的漏极连接像素电极，数据驱动器在栅极驱动器依次驱动栅极线时同步对数据线执行灰阶驱动动作，以对连接于同一条栅极线的像素区域施加相同的Gamma电压。
本发明实施例的显示面板及其驱动方法，设计连接于同一条栅极线的像素区域允许相同颜色的光透过，驱动时对连接于同一条栅极线的多个像素区域施加相同的Gamma电压，无需单独对每一个像素区域分别施加灰阶电压，从而无需用以存储红R、绿G、蓝B三色光对应的灰阶电压的调整值的存储单元，硬件成本较低。
【附图说明】
图1是本发明一实施例的显示面板的像素结构示意图；
图2是本发明一实施例的显示面板的驱动电路示意图；
图3是本发明一实施例的驱动方法的流程示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明所提供的示例性的实施例的技术方案进行清楚、完整地描述。
图1是本发明一实施例的显示面板的像素结构示意图。如图1所示，所述(液晶)显示面板包括栅极驱动器111、数据驱动器112、沿预定方向 间隔排列的多条栅极线G1，G2，...，Gn以及与多条栅极线G1，G2，...，Gn绝缘交叉的数据线D1，D2，...，Dm，其中多条栅极线G1，G2，...，Gn和多条数据线D1，D2，...，Dm定义多个阵列方式排布的像素区域113。
每一像素区域113对应连接一条栅极线和一条数据线，每一像素区域113包括一个薄膜晶体管(Thin Film Transistor，TFT)T和一个像素电极P，所述像素电极P与显示面板的公共电极相对设置，所述薄膜晶体管T包括栅极g、源极s和漏极d，其中像素电极P对应连接漏极d，栅极线对应连接栅极g，数据线对应连接源极s，薄膜晶体管T导通时经源极s传输数据驱动信号至对应的像素电极P。
栅极驱动器111依次为多条栅极线G1，G2，...，Gn提供栅极驱动信号，以依次对多条栅极线G1，G2，...，Gn执行栅极驱动动作，并启动每一条栅极线对应的薄膜晶体管T，数据驱动器112向多条数据线D1，D2，...，Dm提供灰阶驱动信号(灰阶电压)，以依次对多条数据线D1，D2，...，Dm执行灰阶驱动动作，并使所述灰阶驱动信号经启动的薄膜晶体管T施加至对应的像素电极P。其中，在栅极驱动器111执行栅极驱动动作时，数据驱动器112同步对数据线执行灰阶驱动动作。
同一条栅极线对应驱动多个像素区域113，在栅极线传输栅极驱动信号时，同一条栅极线驱动的多个像素区域113的薄膜晶体管T都打开，多条数据线D1，D2，...，Dm同时传输灰阶驱动信号到相应的像素电极P，以向显示不同颜色的像素区域113的像素电极P进行充电。
在本实施例中，连接于同一条栅极线的多个像素区域113允许相同颜色的光透过，例如图1所示，连接于栅极线G1的像素区域113允许红色光透过，连接于栅极线G2的像素区域113允许绿色光透过，连接于栅极线G3的像素区域113允许蓝色光透过，并且沿平行于所述数据线的方向，即沿列方向，循环排布该设置。
图2是本发明一实施例的显示面板的驱动电路示意图。结合图2所示，显示面板进一步包括时序控制器114，时序控制器114与数据驱动器112、栅极驱动器111构成显示面板的驱动电路，时序控制器114和数据驱动器112之间可以通过I2C总线(Inter-Integrated Circuit，两行式串行总线)连接。在显示面板进行画面显示的过程中，在栅极驱动器111驱动相邻两条 栅极线的空白时间(blanking)内，时序控制器114告知栅极驱动器111施加于连接于后一条栅极线的像素区域113的Gamma电压，其中所述Gamma电压相当于一种施加于R、G、B三种颜色光对应的子像素(Sub-Pixel)的灰阶电压。
具体而言，参阅图1，预先将数据驱动器112所要施加于R、G、B三种颜色光对应的子像素的Gamma电压的Gamma code(程序代码)写入到EEPROM(Electrically Erasable Programmable Read-Only Memory，电可擦可编程只读存储器)中，驱动电路上电后时序控制器114读取Gamma code并将其存储于时序控制器114的RAM(Random Access Memory，随机存储器)中。在栅极驱动器111驱动相邻两条栅极线的空白时间内，时序控制器114将对应颜色的Gamma Code通过I2C总线传到数据驱动器112的P-Gamma(可编程伽马电压产生芯片)中，从而产生行方向上子像素所要施加的Gamma电压。
举例而言，当第一行的栅极线G1连接的薄膜晶体管T打开，且在对连接于栅极线G1的像素电极P充电之前的空白时间内，时序控制器114将红色子像素对应的Gamma Code通过I2C总线传送到数据驱动器112中的P-Gamma，P-Gamma产生红色子像素所需的Gamma电压，所述Gamma电压用来作为数据驱动器112内的DAC模块(Digital/Analog Change，数字/模拟转换模块)的数字参考电压，数据驱动器112接收到时序控制器114传送的数据信号(Data signal)后，通过DAC模块转换产生相应模拟电压给连接于栅极线G1的像素电极P以充电。
当然，本实施例的时序控制器114还内置有LVDS RX(Low Voltage Differential Signal，低压差分信号输入端口)和LVDS TX(Low Voltage Differential Signal，低压差分信号输出端口)，以传输相关信号。
由于连接于同一条栅极线的像素区域113允许相同颜色的光透过，本实施例在驱动时可以对连接于同一条栅极线的多个像素区域113施加相同的Gamma电压，无需单独对每一个像素区域113分别施加Gamma电压，从而无需现有方案中的用以存储R、G、B三色光对应的灰阶电压的调整值的存储单元(即白平衡寄存器)，硬件成本较低。另外，相比较于现有技术中的P-Gamma和数据驱动器单独设置，本实施例将P-Gamma内置于数据 驱动器112中，减少了时序控制电路板(Timing Control Board)的元件数量，可降低成本。
图3是本发明一实施例的驱动方法的流程示意图，该方法用于对具有图1所示像素结构的显示面板进行驱动，从而调整R、G、B三色光对应的Gamma曲线，使得在施加相同的灰阶电压时R、G、B三色光对应的子像素的穿透率相同。如图3所示，所述驱动方法包括：
步骤S31：栅极驱动器依次驱动栅极线，其中连接于同一条栅极线的像素区域允许相同颜色的光透过。
步骤S32：数据驱动器对连接于同一条栅极线的像素区域施加相同的Gamma电压。
本实施例的驱动方法可由上述显示面板的各个元件对应执行，具体过程可参阅显示面板的前述驱动过程，此处不再赘述。
综上所述，本发明实施例的核心目的是设计连接于同一条栅极线的像素区域允许相同颜色的光透过，驱动时可以对连接于同一条栅极线的多个像素区域施加相同的Gamma电压，无需单独对每一个像素区域分别施加灰阶电压，从而无需用以存储红R、绿G、蓝B三色光对应的灰阶电压的调整值的存储单元，硬件成本较低。
在此基础上，以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，例如各实施例之间技术特征的相互结合，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (13)

  1. 一种显示面板，其中，所述显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动所述栅极线的栅极驱动器、与所述栅极线绝缘交叉的多条数据线及用于驱动所述数据线的数据驱动器、时序控制器，所述栅极线和所述数据线定义出多个像素区域，每一所述像素区域包括一TFT和一像素电极，每一所述像素区域对应连接一条所述栅极线和一条所述数据线，且连接于同一条所述栅极线的所述像素区域允许相同颜色的光透过，所述TFT的栅极连接对应的所述栅极线，所述TFT的源极连接对应的所述数据线，所述TFT的漏极连接所述像素电极，在进行画面显示时，所述栅极驱动器依次驱动所述栅极线，所述数据驱动器同步对所述数据线执行灰阶驱动动作，以对连接于同一条所述栅极线的所述像素区域施加相同的Gamma电压，并且在所述栅极驱动器驱动相邻两条所述栅极线的空白时间内，所述时序控制器告知所述栅极驱动器施加于连接于后一条所述栅极线的所述像素区域的所述Gamma电压。
  2. 根据权利要求1所述的显示面板，其中，所述时序控制器和所述数据驱动器之间通过I2C总线连接。
  3. 根据权利要求1所述的显示面板，其中，连接于各条所述栅极线的所述像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平行于所述栅极线的方向循环。
  4. 一种显示面板，其中，所述显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动所述栅极线的栅极驱动器、与所述栅极线绝缘交叉的多条数据线及用于驱动所述数据线的数据驱动器，所述栅极线和所述数据线定义出多个像素区域，每一所述像素区域对应连接一条所述栅极线和一条所述数据线，且连接于同一条所述栅极线的所述像素区域允许相同颜色的光透过，在进行画面显示时，所述栅极驱动器依次驱动所述栅极线，所述数据驱动器对连接于同一条所述栅极线的所述像素区域施加相同的Gamma电压。
  5. 根据权利要求4所述的显示面板，其中，所述显示面板还包括时序控制器，在所述栅极驱动器驱动相邻两条所述栅极线的空白时间内，所述 时序控制器告知所述栅极驱动器施加于连接于后一条所述栅极线的所述像素区域的所述Gamma电压。
  6. 根据权利要求5所述的显示面板，其中，所述时序控制器和所述数据驱动器之间通过I2C总线连接。
  7. 根据权利要求4所述的显示面板，其中，连接于各条所述栅极线的所述像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平行于所述栅极线的方向循环。
  8. 根据权利要求4所述的显示面板，其中，所述显示面板进一步包括位于每一所述像素区域的TFT和像素电极，所述TFT的栅极连接对应的所述栅极线，所述TFT的源极连接对应的所述数据线，所述TFT的漏极连接所述像素电极，所述数据驱动器在所述栅极驱动器依次驱动所述栅极线时同步对所述数据线执行灰阶驱动动作，以对连接于同一条所述栅极线的所述像素区域施加相同的所述Gamma电压。
  9. 一种显示面板的驱动方法，其中，所述显示面板包括沿预定方向间隔排列的多条栅极线及用于驱动所述栅极线的栅极驱动器、与所述栅极线绝缘交叉的多条数据线及用于驱动所述数据线的数据驱动器，所述栅极线和所述数据线定义多个像素区域，每一所述像素区域对应连接一条所述栅极线和一条所述数据线，其中，连接于同一条所述栅极线的所述像素区域允许相同颜色的光透过，所述方法包括：
    所述栅极驱动器依次驱动所述栅极线；
    所述数据驱动器对连接于同一条所述栅极线的所述像素区域施加相同的Gamma电压。
  10. 根据权利要求9所述的驱动方法，其中，所述显示面板还包括时序控制器，在所述栅极驱动器驱动相邻两条所述栅极线的空白时间内，所述时序控制器告知所述栅极驱动器施加于连接于后一条所述栅极线的所述像素区域的所述Gamma电压。
  11. 根据权利要求10所述的驱动方法，其中，所述时序控制器和所述数据驱动器之间通过I2C总线连接。
  12. 根据权利要求10所述的驱动方法，其中，连接于各条所述栅极线的所述像素区域依次允许红R、绿G、蓝B三种颜色的光透过，并且沿平 行于所述栅极线的方向循环。
  13. 根据权利要求10所述的驱动方法，其中，所述显示面板进一步包括位于每一所述像素区域的TFT和像素电极，所述TFT的栅极连接对应的所述栅极线，所述TFT的源极连接对应的所述数据线，所述TFT的漏极连接所述像素电极，所述数据驱动器在所述栅极驱动器依次驱动所述栅极线时同步对所述数据线执行灰阶驱动动作，以对连接于同一条所述栅极线的所述像素区域施加相同的所述Gamma电压。
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