WO2016169194A1 - 一种显示面板、驱动方法及显示装置 - Google Patents

一种显示面板、驱动方法及显示装置 Download PDF

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Publication number
WO2016169194A1
WO2016169194A1 PCT/CN2015/089605 CN2015089605W WO2016169194A1 WO 2016169194 A1 WO2016169194 A1 WO 2016169194A1 CN 2015089605 W CN2015089605 W CN 2015089605W WO 2016169194 A1 WO2016169194 A1 WO 2016169194A1
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WIPO (PCT)
Prior art keywords
sub
pixel
color
pixels
same
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PCT/CN2015/089605
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English (en)
French (fr)
Inventor
郭蕾
徐帅
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京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Priority to US15/122,632 priority Critical patent/US9786211B2/en
Priority to EP15882907.7A priority patent/EP3288015B1/en
Publication of WO2016169194A1 publication Critical patent/WO2016169194A1/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
    • G09G3/2003—Display of colours
    • 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
    • G09G3/2085—Special arrangements for addressing the individual elements of the matrix, other than by driving respective rows and columns in combination
    • 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
    • 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
    • G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
    • 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
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • 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
    • G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a display panel, a driving method, and a display device.
  • each dot is displayed by a plurality of sub-pixels by mixing light, for example, each pixel is composed of a red sub-pixel, a green sub-pixel, and a blue
  • each of the sub-pixels is composed of one (RGB mode).
  • the display panel includes a plurality of pixel groups 1 composed of a plurality of sub-pixels arranged in a matrix, each of which The pixel group 1 includes 4 rows and 3 columns of sub-pixels, respectively, a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B; a blue pixel B, a red sub-pixel R, and a green sub-pixel G; a green sub-pixel G, blue Sub-pixel B and red sub-pixel R; blue sub-pixel B, red sub-pixel R and green sub-pixel G; gate line Gate connected to each row of sub-pixels, data line Data connected to each column of sub-pixels, and data lines Data is connected to the operational amplifier 2 one by one.
  • the operational amplifier 2 needs to be sequentially and in accordance with the scanning order.
  • the sub-pixels of the respective colors connected to the data lines sequentially output data signals.
  • the upper line of the green sub-pixel G may be a red sub-pixel R or a blue sub-pixel B;
  • the grayscale values of R, G, and B are different, the grayscale value output by the same operational amplifier is always hopping.
  • the grayscale value 127 output by the operational amplifier to the green sub-pixel G may be changed by 0 of the previous row, or may be 255 hop by the previous row. changing.
  • the gray scale value of the green sub-pixel G in the entire display panel is 127 at the end, the actual charge amount to the green sub-pixel G is higher when jumping from 0 to 127 than from 255 to 127, thus resulting in 0
  • the brightness of the green sub-pixel G that jumps to 127 is higher than the brightness of the green sub-pixel G that jumps from 255 to 127, so that the light and dark stripes appear visually, which affects the display effect of the display panel.
  • the embodiments of the present disclosure provide a display panel, a display method, and a display device, which are used to eliminate the brightness and darkness of the display panel when displaying a solid color picture, thereby improving the display effect of the display panel.
  • a first aspect of the present disclosure provides a display panel, which may include: a plurality of pixel groups consisting of N rows ⁇ M columns of sub-pixels arranged in a matrix, gate lines connected to each row of sub-pixels, and sub-pixels of each column a connected data line; wherein N is a positive integer greater than 2, M is a positive integer greater than 1, and in the same pixel group, the same column of sub-pixels includes at least two color sub-pixels;
  • each of the operational amplifiers is connected to a corresponding data line through a corresponding switching device, and a control unit connected to each switching device;
  • the number of operational amplifiers corresponding to each data line is equal to the number of color types of sub-pixels connected to the data lines, and one operational amplifier corresponds to one color sub-pixel, and multiple operations corresponding to each data line
  • each operational amplifier is configured to sequentially output data signals to sub-pixels of corresponding colors connected to the corresponding data lines according to a scanning order of the gate lines;
  • the control unit is configured to control, when the nth row of gate lines is scanned, the one of the switching devices connected to the data line connected to the mth column of the sub-pixels is in an on state And the switching device in the on state is a switching device connected to an operational amplifier for outputting a data signal to the nth row of sub-pixels.
  • the data lines connecting the sub-pixels of the same color may correspond to the same one for the M data lines corresponding to each column of pixel groups. Outputting data to the sub-pixels of the same color Signal op amp.
  • the number of color categories of the sub-pixels in each column of sub-pixels may be the same, and the color types may be the same.
  • the first row of sub-pixels may be the first color sub-pixel and the second color, respectively.
  • a sub-pixel and a third color sub-pixel wherein the second row of sub-pixels may be a third color sub-pixel, a first color sub-pixel, and a second color sub-pixel, respectively, and the third row of sub-pixels may be a second color sub-pixel, respectively.
  • the third color sub-pixel and the first color sub-pixel may be a third color sub-pixel, a first color sub-pixel, and a second color sub-pixel, respectively.
  • the first color, the second color, and the third color may be one of red, green, and blue, respectively.
  • the switching device may be a transmission gate
  • the transmission gate has a positive phase control terminal and a negative phase control terminal connected to the control unit, the input terminal is connected to a corresponding operational amplifier, and the output terminal is connected to a corresponding data line.
  • the switching device may be a switching transistor
  • the switching transistor has a gate connected to the control unit, a first pole connected to a corresponding operational amplifier, and a second pole connected to a corresponding data line, wherein the first pole and the second pole are respectively a source and a drain one of the.
  • the source and the drain of the transistor are not distinguished. Therefore, the first pole of the transistor described above may be referred to as the source or the drain, and the second pole is equally It can be referred to as the drain or the source as long as the first pole is different from the second pole.
  • the switching transistor may be an N-type transistor or a P-type transistor.
  • the second aspect of the present disclosure further provides a driving method of any one of the above display panels, the method may include:
  • the The control unit controls one of the switching devices connected to the data line connected to the m-th column sub-pixel to be in an on state, and the operational amplifier corresponding to the n-th row of sub-pixels passes through the switching device in the on state
  • the nth row of sub-pixels output data signals.
  • a third aspect of the present disclosure further provides a display device, including any of the display panels provided by the embodiments of the present disclosure.
  • the display panel since the sub-pixels of different colors connected to the same data line respectively output data signals through different operational amplifiers, and the sub-pixels of the same color on the same data line are The data signal is output through the same operational amplifier. Therefore, when the display panel displays a frame of a solid color picture, even if the grayscale values of the sub-pixels of different colors are different, the sub-pixels of the same color connected to the same data line correspond to the same operational amplifier, that is, the same color.
  • the data signals of the same gray scale value of the sub-pixels are always output by the same operational amplifier, and no gray scale jump occurs, so the charge amounts of the sub-pixels of the same color are the same, and the brightness is also the same when displayed, thereby It eliminates the light and dark stripes that the existing display panel displays when displaying a solid color screen, thereby improving the display effect of the display panel.
  • FIG. 1 is a structural view of a display panel of a conventional Rainbow arrangement
  • FIG. 2 is a structural diagram of a display panel according to an embodiment of the present disclosure
  • FIG. 3 is a structural diagram of a display panel according to another embodiment of the present disclosure.
  • 4a to 4c are respectively a detailed structural diagram of a display panel according to an embodiment of the present disclosure.
  • FIG. 5 is a specific structural diagram of a display panel according to an embodiment of the present disclosure.
  • FIG. 6 is a circuit timing diagram of the display panel shown in FIG. 5.
  • the sub-pixels 01 of the three colors are included in the same column of sub-pixels 01, which are respectively a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
  • the display panel further includes:
  • a plurality of operational amplifiers (21, 22, and 23 in FIG. 2) corresponding to Data of each data line, and each operational amplifier is connected to a corresponding data line Data through a corresponding switching device 3, and is connected to each switching device 3 Control unit 4;
  • the number of operational amplifiers corresponding to each data line Data is equal to the number of color types of the sub-pixels 01 connected to the data line Data, and one operational amplifier (21, 22 or 23) corresponds to the sub-pixel 01 of one color (for example, 2, 21 corresponds to the red sub-pixel R, 22 corresponds to the green sub-pixel G, and 23 corresponds to the blue sub-pixel B).
  • each operational amplifier is used for the gate line Gate.
  • the scanning sequence sequentially outputs the data signal to the sub-pixel 01 of the corresponding color connected to the corresponding data line Data;
  • the control unit 4 is configured to control, when the nth row of gate lines Gate is scanned for the mth column subpixel 01 of the display panel, one of the switching devices 3 connected to the data line Data connected to the mth column of subpixels 01 is in an on state.
  • the switching device 3 in the on state is a switching device 3 connected to an operational amplifier for outputting a data signal to the nth row of sub-pixels 01.
  • the sub-pixels of different colors connected to the same data line respectively output data signals through different operational amplifiers, and the sub-pixels of the same color on the same data line are output through the same operational amplifier.
  • Data signal so when the display panel displays a frame of solid color, even if the grayscale values of the sub-pixels of different colors are different, the sub-pixels of the same color connected to the same data line correspond to the same operational amplifier, that is, The data signals of the same gray scale value of the sub-pixels of the same color are always output by the same operational amplifier, and no gray scale jump occurs, so the charge amounts of the sub-pixels of the same color are the same, and the brightness is also the same when displayed. Therefore, it is used to eliminate the light and dark horizontal stripes that the existing display panel presents when displaying a solid color picture, thereby improving the display effect of the display panel.
  • the data line Data corresponds to an operational amplifier that outputs a data signal to the sub-pixel 01 of the same color.
  • the first column sub-pixel 01, the second column sub-pixel 01 and the third column sub-pixel 01 each include a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B, Then, the three data lines Data are connected to the same operational amplifier (21 in FIG.
  • each column of sub-pixels includes sub-pixels of three colors, and the types of the three colors in each column of sub-pixels are the same.
  • each data line is connected to the same number of operational amplifiers, and each operational amplifier is connected to each data line corresponding to the same pixel group.
  • the first row of sub-pixels 01 are the first color sub-pixel 011, the second color sub-pixel 012, and the third color sub-pixel 013, respectively
  • the second row of sub-pixels 01 are the third color sub-pixels 013, respectively.
  • a first color sub-pixel 011 and a second color sub-pixel 012 wherein the third row of sub-pixels are a second color sub-pixel 012, a third color sub-pixel 013, and a first color sub-pixel 011, respectively, and the fourth row of sub-pixels are respectively The third color sub-pixel 013, the first color sub-pixel 011, and the second color sub-pixel 012.
  • the first color, the second color, and the third color are respectively one of red, green, and blue. Assuming the first color is red, the second color can only be green or blue, while the third color can only be blue or green.
  • a pixel group is taken as an example, wherein the data lines connected to the column sub-pixels in one-to-one correspondence are respectively Data1, Data2, and Data3, and the gate lines connected to the row sub-pixels in one-to-one correspondence Gate1, Gate2, Gate3, and Gate4, respectively, an operational amplifier for providing a data signal to the first color sub-pixel 011 is 211, and an operational amplifier for providing a data signal to the second color sub-pixel 012 is 212 for The operational amplifier of the three-color sub-pixel 013 providing the data signal is 213.
  • the switching device may be a transmission gate, a switching transistor or other electronic switching device, which is not limited herein.
  • the switching device may be a transmission gate, in order to avoid such a signal loss, when the signal is transmitted from the source to the drain when the switching transistor is in the on state.
  • the switching device 3 is a transmission gate (the three transmission gates connected to the data line Data1 in FIG. 4a are respectively TG11). , TG12 and TG13, three transmission gates connected to the data line Data2 are TG21, TG22 and TG23 respectively, and three transmission gates connected to the data line Data3 are TG31, TG32 and TG33 respectively; wherein
  • the positive phase control terminal and the negative phase control terminal of the transmission gate are both connected to the control unit 4, the input terminal is connected to the corresponding operational amplifier 2, and the output terminal is connected to the corresponding data line Data.
  • the transmission gate is in an on state, when the signal of the positive phase control terminal is a low level signal, and the signal of the negative phase control terminal When it is a high level signal, the transmission gate TG is in an off state.
  • the switching device 3 is a switching transistor (three connected to the data line Data1 in FIGS. 4b and 4c).
  • the switching transistors are respectively T11, T12 and T13
  • the three switching transistors connected to the data line Data2 are respectively T21, T22 and T23
  • the three switching transistors connected to the data line Data3 are T31, T32 and T33 respectively;
  • the gate of the switching transistor is connected to the control unit 4, the source is connected to the corresponding operational amplifier 2, and the drain is connected to the corresponding data line Data.
  • the source and drain of the switching transistor are not distinguished, so in the above arrangement, the drain of the switching transistor is connected to the corresponding operational amplifier 2, and the source is connected to the corresponding data line Data.
  • the switching transistor may be an N-type transistor or a P-type transistor.
  • the switching transistor when the switching transistor is an N-type transistor tube, when the signal of the gate is a high level signal, the switching transistor is in an on state, and when the signal of the gate is a low level signal, the switching transistor is in an off state.
  • the switching transistor when the switching transistor is a P-type transistor tube, when the signal of the gate is a low level signal, the switching transistor is in an on state, and the signal of the gate is a high level signal.
  • the switching transistor is in the off state.
  • the switching transistors are all N-type transistors or both are P-type transistors
  • the control unit when scanning the n-th gate line, a plurality of switches connected to each data line A switching transistor is turned on in the transistor, so the control unit can send the same control signal to the gates of the switching transistors that are in the on state, and control the switching transistors to be turned on at the same time or at the same time.
  • the switching transistors T11, T22, and T33 are simultaneously turned on when scanning the first row gate line Gate1
  • the switching transistors T13, T21, and T32 are simultaneously In the off state
  • the switching transistors T12, T23 and T31 are simultaneously in an off state
  • the switching transistors T13, T21 and T32 are simultaneously in an on state
  • the switching transistors T11, T22 and T33 are simultaneously in an off state.
  • the switching transistors T12, T23 and T31 are simultaneously in an off state; when scanning the third row gate line Gate3, the switching transistors T12, T23 and T31 are simultaneously in an on state, and the switching transistors T13, T21 and T32 are simultaneously in an off state, the switching transistor T11, T22 and T33 are simultaneously in the off state; when scanning the fourth row gate line Gate4, the switching transistors T11, T22 and T33 are simultaneously in the on state, the switching transistors T13, T21 and T32 are simultaneously in the off state, the switching transistors T12, T23 And T31 is at the same time.
  • the switching transistors T11, T22 and T33 are always in the on state or the off state at the same time, the switching transistors T12, T23 and T31 are always in the on state or the off state at the same time, and the switching transistors T13, T21 and T32 are always in the on state at the same time or Cutoff status. Therefore, as shown in FIG. 5, the control unit (not shown in FIG. 5) can transmit the same control signal C1 to the switching transistors T11, T22, and T33, and transmit the same control signal C2 to the switching transistors T12, T23, and T31 to the switching transistor. T13, T21 and T32 send the same control signal C3.
  • the following shows the display panel shown in FIG. 5 as an example, and the working process is described in detail.
  • the working sequence diagram is shown in FIG. 6.
  • a high level signal is indicated by 1 and a low level signal is indicated by 0.
  • the first control signal C1, the second control signal C2, and the third control signal C3 are cycled through the above four processes until all the gate lines are scanned.
  • an embodiment of the present disclosure further provides a driving method for any of the above display panels, including:
  • the control unit controls one of the switching devices connected to the data line connected to the mth column of sub-pixels to be in an on state, corresponding to the nth row of subpixels
  • the operational amplifier outputs a data signal to the nth row of sub-pixels through the switching device in an on state.
  • the embodiment of the present disclosure further provides a display device, including any of the above display panels provided by the embodiments of the present disclosure.
  • the display device can be: hand Any product or component with display function, such as a computer, tablet, TV, monitor, laptop, digital photo frame, navigator, etc.
  • display device reference may be made to the embodiment of the above display panel, and the repeated description is omitted.
  • a display panel In a display panel, a driving method, and a display device provided by an embodiment of the present disclosure, since sub-pixels of different colors connected to the same data line respectively output data signals through different operational amplifiers, and sub-pixels of the same color on the same data line A pixel outputs a data signal through the same operational amplifier. Therefore, when the display panel displays a frame of a solid color picture, even if the grayscale values of the sub-pixels of different colors are different, the sub-pixels of the same color connected to the same data line correspond to the same operational amplifier, that is, the same color.
  • the data signals of the same gray scale value of the sub-pixels are always output by the same operational amplifier, and no gray scale jump occurs, so the charge amounts of the sub-pixels of the same color are the same, and the brightness is also the same when displayed, thereby It eliminates the light and dark stripes that the existing display panel displays when displaying a solid color screen, thereby improving the display effect of the display panel.

Abstract

一种显示面板、驱动方法及显示装置，由于与同一数据线连接不同颜色的子像素分别通过不同的运算放大器（21, 22, 23）输出数据信号，并且同一数据线上的相同颜色的子像素是通过同一运算放大器（21, 22, 23）输出数据信号，因此当上述显示面板在显示一帧纯色画面时，即使不同颜色的子像素对应的灰阶值不相同，但是由于与同一数据线连接的同一颜色的子像素对应同一个运算放大器（21, 22, 23），即同一颜色的子像素的相同灰阶值的数据信号始终由同一运算放大器（21, 22, 23）输出，不会出现灰阶跳变，因此相同颜色的子像素的充电量是相同的，在显示时亮度也是相同的，从而用以消除现有显示面板在显示纯色画面时呈现的明暗横纹，提高显示面板的显示效果。

Description

一种显示面板、驱动方法及显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种显示面板、驱动方法及显示装置。
背景技术
在常规的液晶显示装置、有机发光二极管(OLED)显示装置中，每个点(像素)是由多个子像素通过混光来显示颜色的，例如每个像素由红色子像素、绿色子像素、蓝色子像素各一个组成(RGB模式)。
为了改善视觉效果，人们对于显示装置的分辨率(单位尺寸内的像素数)提出了越来越高的要求；这就要求子像素的尺寸越来越小，但由于工艺限制子像素尺寸不能无限缩小。
为在子像素尺寸一定的情况下改善显示效果，人们提出了Rainbow排列方式的虚拟显示设计。该设计中，RGB(Red Green Blue，红绿蓝)子像素的排列方式为RGB Rainbow排列方式，如图1所示，显示面板包括呈矩阵排列的若干由多个子像素组成的像素组1，各像素组1包括4行3列子像素，分别为红色子像素R、绿色子像素G和蓝色子像素B；蓝色像素B、红色子像素R和绿色子像素G；绿色子像素G、蓝色子像素B和红色子像素R；蓝色子像素B、红色子像素R和绿色子像素G；与各行子像素连接的栅线Gate，与各列子像素连接的数据线Data，以及与各数据线Data一一对应连接的运算放大器2。上述虚拟设计的显示面板与传统的显示面板相比，通过这种特殊的Rainbow子像素排列方式和相应的虚拟算法，可以在实现相同显示效果的基础上，减少1/3的子像素数量。
但是，由于上述虚拟显示面板不同于传统显示面板，同一数据线Data上连接有三种不同颜色的子像素(R、G、B均有)，因此运算放大器2需要按照扫描顺序，依次向与对应所述数据线连接的各颜色的子像素依次输出数据信号。这样，在显示一幅纯色画面(即R、G、B的灰阶值均为固定值)时，绿色子像素G的上一行可能是红色子像素R，也可能是蓝色子像素B；当R、G、B三者的灰阶值均不同时，那么同一运算放大器输出的灰阶值是一直跳变的。例如在R＝0，G＝127， B＝255或R＝255，G＝127，B＝0时，运算放大器向绿色子像素G输出的灰阶值127可能是由上一行的0跳变的，也可能是由上一行的255跳变的。虽然最后整个显示面板中的绿色子像素G的灰阶值都是127，但是由0跳变至127比由255跳变至127时对绿色子像素G的实际充电量要高，因此导致由0跳变至127的绿色子像素G的亮度要比由255跳变至127的绿色子像素G的亮度高，从而在视觉上会呈现明暗横纹，影响显示面板的显示效果。
发明内容
有鉴于此，本公开实施例提供了一种显示面板、显示方法及显示装置，用以消除显示面板在显示纯色画面时呈现的明暗横纹，从而提高显示面板的显示效果。
因此，本公开的第一方面提供了一种显示面板，其可以包括：呈矩阵排列的若干由N行×M列子像素组成的像素组，与各行子像素连接的栅线，以及与各列子像素连接的数据线；其中，N为大于2的正整数，M为大于1的正整数，且在同一像素组中，同一列子像素中包括至少两种颜色的子像素；还包括：
与各条数据线对应的多个运算放大器，且各所述运算放大器分别通过对应的开关器件与对应的数据线连接，以及与各开关器件连接的控制单元；其中，
与每一条数据线对应的运算放大器的数量等于与所述数据线连接的子像素的颜色种类的数量，且一个运算放大器对应一种颜色的子像素，在与每一条数据线对应的多个运算放大器中，各运算放大器用于按照栅线的扫描顺序依次向与对应的所述数据线连接的对应颜色的子像素输出数据信号；
所述控制单元用于，针对所述显示面板的第m列子像素，当扫描第n行栅线时，控制与所述第m列子像素连接的数据线所连接的其中一个开关器件处于导通状态，且所述处于导通状态的开关器件为与用于向所述第n行子像素输出数据信号的运算放大器连接的开关器件。
根据一个实施例，在本公开实施例提供的上述显示面板中，当M大于1时，针对与每一列像素组对应的M条数据线，连接有相同颜色的子像素的数据线可以对应同一个向所述相同颜色的子像素输出数据 信号的运算放大器。
根据另一实施例，在本公开实施例提供的上述显示面板中，在同一像素组中，每一列子像素中的子像素的颜色种类的数量可以相同，且颜色种类可以相同。
根据又一实施例，在本公开实施例提供的上述显示面板中，N＝4，M＝3，且在同一像素组中，第1行子像素可以分别为第一颜色子像素、第二颜色子像素和第三颜色子像素，第2行子像素可以分别为第三颜色子像素、第一颜色子像素和第二颜色子像素，第3行子像素可以分别为第二颜色子像素、第三颜色子像素和第一颜色子像素，第4行子像素可以分别为第三颜色子像素、第一颜色子像素和第二颜色子像素。
根据再一实施例，在本公开实施例提供的上述显示面板中，所述第一颜色、所述第二颜色和所述第三颜色可以分别为红色、绿色和蓝色中的一种。
根据另外的实施例，在本公开实施例提供的上述显示面板中，所述开关器件可以为传输门；其中，
所述传输门，其正相控制端和负相控制端均与所述控制单元相连，输入端与对应的运算放大器相连，输出端与对应的数据线相连。
根据另外的实施例，在本公开实施例提供的上述显示面板中，所述开关器件可以为开关晶体管；其中，
所述开关晶体管，其栅极与所述控制单元相连，第一极与对应的运算放大器相连，第二极与对应的数据线相连，其中第一极和第二极分别为源极和漏极中的一个。
如本领域技术人员所已知的，对晶体管的源极和漏极不作区分，因此，以上所述的晶体管的第一极既可以指源极也可以指漏极，并且第二极同样地既可以指漏极也可以指源极，只要第一极与第二极不同即可。
根据示例性实施例，在本公开实施例提供的上述显示面板中，所述开关晶体管可以为N型晶体管或P型晶体管。
相应地，本公开的第二方面还提供了一种上述任一种显示面板的驱动方法，该方法可以包括：
在一帧画面内，依次扫描各行栅线；
针对所述显示面板的第m列子像素，当扫描第n行栅线时，所述 控制单元控制与所述第m列子像素连接的数据线所连接的其中一个开关器件处于导通状态，与所述第n行子像素对应的运算放大器通过所述处于导通状态的开关器件向所述第n行子像素输出数据信号。
相应地，本公开的第三方面还提供了一种显示装置，包括本公开实施例提供的任一种显示面板。
在本公开实施例提供的显示面板、驱动方法及显示装置中，由于与同一数据线连接不同颜色的子像素分别通过不同的运算放大器输出数据信号，并且同一数据线上的相同颜色的子像素是通过同一运算放大器输出数据信号。因此当上述显示面板在显示一帧纯色画面时，即使不同颜色的子像素对应的灰阶值不相同，但是由于与同一数据线连接的同一颜色的子像素对应同一个运算放大器，即同一颜色的子像素的相同灰阶值的数据信号始终由同一运算放大器输出，不会出现灰阶跳变，因此相同颜色的子像素的充电量是相同的，在显示时亮度也使相同的，从而用以消除现有显示面板在显示纯色画面时呈现的明暗横纹，从而提高显示面板的显示效果。
附图说明
图1为现有的Rainbow排列方式的显示面板的结构图；
图2为本公开的一个实施例提供的显示面板的结构图；
图3为本公开的另一实施例提供的显示面板的结构图；
图4a至图4c分别为本公开实施例提供的显示面板的具体结构图；
图5为本公开实施例提供的显示面板的具体结构图；
图6为图5所示显示面板的电路时序图。
具体实施方式
下面结合附图，对本公开实施例提供的显示面板、驱动方法及显示装置的具体实施方式进行详细地说明。
本公开实施例提供的一种显示面板，如图2所示，包括：呈矩阵排列的若干由N行×M列子像素01组成的像素组1，与各行子像素01连接的栅线Gate，以及与各列子像素01连接的数据线Data；其中，N为大于2的正整数，M为大于1的正整数，且在同一像素组1中，同一列子像素01中包括至少两种颜色的子像素01；图2是以N＝3，M＝3 为例进行说明，且在同一列子像素01中包括三种颜色的子像素01，分别为红色子像素R、绿色子像素G和蓝色子像素B；该显示面板还包括：
与各条数据线对应Data的多个运算放大器(图2中的21，22和23)，且各运算放大器分别通过对应的开关器件3与对应的数据线Data连接，以及与各开关器件3连接的控制单元4；其中，
与每一条数据线Data对应的运算放大器的数量等于与数据线Data连接的子像素01的颜色种类的数量，且一个运算放大器(21、22或23)对应一种颜色的子像素01(例如图2中21对应红色子像素R，22对应绿色子像素G，23对应蓝色子像素B)，在与每一条数据线Data对应的多个运算放大器中，各运算放大器用于按照栅线Gate的扫描顺序依次向与对应的数据线Data连接的对应颜色的子像素01输出数据信号；
控制单元4用于，针对显示面板的第m列子像素01，当扫描第n行栅线Gate时，控制与第m列子像素01连接的数据线Data所连接的其中一个开关器件3处于导通状态，且处于导通状态的开关器件3为与用于向第n行子像素01输出数据信号的运算放大器连接的开关器件3。
在本公开实施例提供的上述显示面板中，由于与同一数据线连接不同颜色的子像素分别通过不同的运算放大器输出数据信号，并且同一数据线上的相同颜色的子像素是通过同一运算放大器输出数据信号，因此当上述显示面板在显示一帧纯色画面时，即使不同颜色的子像素对应的灰阶值不相同，但是由于与同一数据线连接的同一颜色的子像素对应同一个运算放大器，即同一颜色的子像素的相同灰阶值的数据信号始终由同一运算放大器输出，不会出现灰阶跳变，因此相同颜色的子像素的充电量是相同的，在显示时亮度也使相同的，从而用以消除现有显示面板在显示纯色画面时呈现的明暗横纹，从而提高显示面板的显示效果。
进一步地，在本公开实施例提供的上述显示面板中，如图3所示，当M大于1时，针对与每一列像素组1对应的M条数据线Data，连接有相同颜色的子像素01的数据线Data对应同一个向相同颜色的子像素01输出数据信号的运算放大器。如图3所示，假设一列像素组1中有 3列子像素，那么对应3条数据线Data，且第一列子像素01、第二列子像素01和第三列子像素01中均包括有红色子像素R、绿色子像素G和蓝色子像素B，那么3条数据线Data均连接同一个与红色子像素R对应的运算放大器(图3中21)、同一个与绿色子像素G对应的运算放大器(图3中22)、以及同一个与蓝色子像素B对应的运算放大器(图3中23)。即一列像素组对应的3条数据线分别均与3个运算放大器(图3中的21，22和23)连接，这样通过共用放大器可以减少放大器的数量，从而降低成本。
进一步地，在本公开实施例提供的上述显示面板中，在同一像素组中，各列子像素中的子像素的颜色种类的数量相同，且颜色种类相同。例如每一列子像素中均包括了3种颜色的子像素，且每一列子像素中这3种颜色的种类相同。这样，在同一像素组中，每一条数据线连接相同数量的运算放大器，且每一运算放大器连接与同一像素组对应的每一条数据线。
具体地，在具体实施时，本公开实施例提供的上述显示面板尤其适用于Rainbow排列等方式显示面板，如图4a至图4c所示，即在一个像素组，N＝4，M＝3，且在同一像素组中，第1行子像素01分别为第一颜色子像素011、第二颜色子像素012和第三颜色子像素013，第2行子像素01分别为第三颜色子像素013、第一颜色子像素011和第二颜色子像素012，第3行子像素分别为第二颜色子像素012、第三颜色子像素013和第一颜色子像素011，第4行子像素分别为第三颜色子像素013、第一颜色子像素011和第二颜色子像素012。
在具体实施时，在本公开实施例提供的上述显示面板中，第一颜色、第二颜色和第三颜色分别为红色、绿色和蓝色中的一种。假设第一颜色为红色，那么第二颜色只能绿色或蓝色，而第三颜色只能为蓝色或绿色。
具体地，在图4a至图4c中，是以一个像素组为例，其中与各列子像素一一对应连接的数据线分别为Data1、Data2和Data3，与各行子像素一一对应连接的栅线分别为Gate1、Gate2、Gate3和Gate4，用于向第一颜色子像素011提供数据信号的运算放大器为211，用于向第二颜色子像素012提供数据信号的运算放大器为212，用于向第三颜色子像素013提供数据信号的运算放大器为213。
根据本公开的示例性实施例，在本公开实施例提供的上述显示面板中，开关器件可以为传输门，开关晶体管或其它电子开关器件，在此不作限定。
由于在开关晶体管处于导通状态时，信号由源极传输至漏极会有信号损失，因此为了避免这种信号损失，在本公开实施例提供的上述显示面板中，开关器件可以为传输门。
具体地，在具体实施时，在本公开实施例提供的上述显示面板中，如图4a所示，开关器件3为传输门(在图4a中与数据线Data1连接的三个传输门分别为TG11、TG12和TG13，与数据线Data2连接的三个传输门分别为TG21、TG22和TG23，与数据线Data3连接的三个传输门分别为TG31、TG32和TG33)；其中，
传输门的正相控制端和负相控制端均与控制单元4相连，输入端与对应的运算放大器2相连，输出端与对应的数据线Data相连。当正相控制端的信号为高电平信号，且负相控制端的信号为低电平信号时，传输门处于导通状态，当正相控制端的信号为低电平信号，且负相控制端的信号为高电平信号时，传输门TG处于截止状态。
具体地，在具体实施时，在本公开实施例提供的上述显示面板中，如图4b和图4c所示，开关器件3为开关晶体管(在图4b和图4c中与数据线Data1连接的三个开关晶体管分别为T11、T12和T13，与数据线Data2连接的三个开关晶体管分别为T21、T22和T23，与数据线Data3连接的三个开关晶体管分别为T31、T32和T33)；其中，
开关晶体管的栅极与控制单元4相连，源极与对应的运算放大器2相连，漏极与对应的数据线Data相连。
需要指出的是，不对开关晶体管的源极和漏极进行区分，因此在以上布置中，开关晶体管的漏极与对应的运算放大器2相连，源极与对应的数据线Data相连也是可能的。
进一步地，在本公开实施例提供的上述显示面板中，开关晶体管可以为N型晶体管，也可以为P型晶体管。如图4b所示，当开关晶体管为N型晶体管管时，栅极的信号为高电平信号时，开关晶体管处于导通状态，栅极的信号为低电平信号时，开关晶体管处于截止状态。或者，如图4c所示，当开关晶体管为P型晶体管管时，栅极的信号为低电平信号时，开关晶体管处于导通状态，栅极的信号为高电平信号 时，开关晶体管处于截止状态。
进一步地，在本公开实施例提供的上述显示面板中，当开关晶体管均为N型晶体管或均为P型晶体管时，当扫描第n行栅线时，与每一条数据线连接的多个开关晶体管中均有一个开关晶体管处于导通状态，因此控制单元可以向这些处于导通状态的开关晶体管的栅极发送相同的控制信号，控制这些开关晶体管同时处于开启状态，或同时处于关闭状态。
具体地，以如图4b和图4c所示的显示面板为例，由于在扫描第一行栅线Gate1时，开关晶体管T11、T22和T33同时处于导通状态，开关晶体管T13、T21和T32同时处于截止状态，开关晶体管T12、T23和T31同时处于截止状态；在扫描第二行栅线Gate2时，开关晶体管T13、T21和T32同时处于导通状态，开关晶体管T11、T22和T33同时处于截止状态，开关晶体管T12、T23和T31同时处于截止状态；在扫描第三行栅线Gate3时，开关晶体管T12、T23和T31同时处于导通状态，开关晶体管T13、T21和T32同时处于截止状态，开关晶体管T11、T22和T33同时处于截止状态；在扫描第四行栅线Gate4时，开关晶体管T11、T22和T33同时处于导通状态，开关晶体管T13、T21和T32同时处于截止状态，开关晶体管T12、T23和T31同时处于截止状态。因此，开关晶体管T11、T22和T33始终同时处于导通状态或截止状态，开关晶体管T12、T23和T31始终同时处于导通状态或截止状态，开关晶体管T13、T21和T32始终同时处于导通状态或截止状态。因此，如图5所示，控制单元(图5中未示出)可以向开关晶体管T11、T22和T33发送同一控制信号C1，向开关晶体管T12、T23和T31发送同一控制信号C2，向开关晶体管T13、T21和T32发送同一控制信号C3。
下面分别以图5所示的显示面板为例，对其工作过程作以详细的描述，其工作时序图如图6所示。下述描述中以1表示高电平信号，0表示低电平信号。
实例一：
当扫描第一行栅线Gate1时，C1＝1，C2＝0，C3＝0。开关晶体管T11、T22和T33处于导通状态，其余开关晶体管处于截止状态，运算放大器211通过开关晶体管T11将数据信号提供给第一行的第一颜色 子像素011，运算放大器212通过开关晶体管T22将数据信号提供给第一行的第二颜色子像素012，运算放大器211通过开关晶体管T33将数据信号提供给第一行的第三颜色子像素013；
当扫描第二行栅线Gate2时，C1＝0，C2＝1，C3＝0。开关晶体管T12、T23和T31处于导通状态，其余开关晶体管处于截止状态，运算放大器211通过开关晶体管T12将数据信号提供给第二行的第一颜色子像素011，运算放大器212通过开关晶体管T23将数据信号提供给第二行的第二颜色子像素012，运算放大器213通过开关晶体管T31将数据信号提供给第二行的第三颜色子像素013；
当扫描第三行栅线Gate3时，C1＝0，C2＝0，C3＝1。开关晶体管T13、T21和T32处于导通状态，其余开关晶体管处于截止状态，运算放大器211通过开关晶体管T13将数据信号提供给第三行的第一颜色子像素011，运算放大器212通过开关晶体管T21将数据信号提供给第三行的第二颜色子像素012，运算放大器213通过开关晶体管T32将数据信号提供给第三行的第三颜色子像素013；
当扫描第四行栅线Gate4时，C1＝0，C2＝1，C3＝0。开关晶体管T12、T23和T31处于导通状态，其余开关晶体管处于截止状态，运算放大器211通过开关晶体管T12将数据信号提供给第四行的第一颜色子像素011，运算放大器212通过开关晶体管T23将数据信号提供给第四行的第二颜色子像素012，运算放大器213通过开关晶体管T31将数据信号提供给第四行的第三颜色子像素013；
之后，第一控制信号C1、第二控制信号C2和第三控制信号C3一直循环上述四个过程，直至扫描完所有的栅线。
基于同一公开构思，本公开实施例还提供了一种上述任一种显示面板的驱动方法，包括：
在一帧画面内，依次扫描各行栅线；
针对显示面板的第m列子像素，当扫描第n行栅线时，控制单元控制与第m列子像素连接的数据线所连接的其中一个开关器件处于导通状态，与第n行子像素对应的运算放大器通过处于导通状态的开关器件向第n行子像素输出数据信号。
基于统一公开构思，本公开实施例还提供了一种显示装置，包括本公开实施例提供的上述任一种显示面板。该显示装置可以为：手 机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实施可以参见上述显示面板的实施例，重复之处不再赘述。
在本公开实施例提供的一种显示面板、驱动方法及显示装置中，由于与同一数据线连接不同颜色的子像素分别通过不同的运算放大器输出数据信号，并且同一数据线上的相同颜色的子像素是通过同一运算放大器输出数据信号。因此当上述显示面板在显示一帧纯色画面时，即使不同颜色的子像素对应的灰阶值不相同，但是由于与同一数据线连接的同一颜色的子像素对应同一个运算放大器，即同一颜色的子像素的相同灰阶值的数据信号始终由同一运算放大器输出，不会出现灰阶跳变，因此相同颜色的子像素的充电量是相同的，在显示时亮度也使相同的，从而用以消除现有显示面板在显示纯色画面时呈现的明暗横纹，从而提高显示面板的显示效果。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开也意图包含这些改动和变型在内。

Claims (10)

  1. 一种显示面板，包括：呈矩阵排列的若干由N行×M列子像素组成的像素组，与各行子像素连接的栅线，以及与各列子像素连接的数据线；其中，N为大于2的正整数，M为大于1的正整数，且在同一像素组中，同一列子像素中包括至少两种颜色的子像素；所述显示面板还包括：
    与各条数据线对应的多个运算放大器，且各所述运算放大器分别通过对应的开关器件与对应的数据线连接，以及与各开关器件连接的控制单元；其中，
    与每一条数据线对应的运算放大器的数量等于与所述数据线连接的子像素的颜色种类的数量，且一个运算放大器对应一种颜色的子像素，在与每一条数据线对应的多个运算放大器中，各运算放大器用于按照栅线的扫描顺序依次向与对应的所述数据线连接的对应颜色的子像素输出数据信号；
    所述控制单元用于，针对所述显示面板的第m列子像素，当扫描第n行栅线时，控制与所述第m列子像素连接的数据线所连接的其中一个开关器件处于导通状态，且所述处于导通状态的开关器件为与用于向所述第n行子像素输出数据信号的运算放大器连接的开关器件。
  2. 如权利要求1所述的显示面板，其中，当M大于1时，针对与每一列像素组对应的M条数据线，连接有相同颜色的子像素的数据线对应同一个向所述相同颜色的子像素输出数据信号的运算放大器。
  3. 如权利要求2所述的显示面板，其中，在同一像素组中，每一列子像素中的子像素的颜色种类的数量相同，且颜色种类相同。
  4. 如权利要求3所述的显示面板，其中，N＝4，M＝3，且在同一像素组中，第1行子像素分别为第一颜色子像素、第二颜色子像素和第三颜色子像素，第2行子像素分别为第三颜色子像素、第一颜色子像素和第二颜色子像素，第3行子像素分别为第二颜色子像素、第三颜色子像素和第一颜色子像素，第4行子像素分别为第三颜色子像素、第一颜色子像素和第二颜色子像素。
  5. 如权利要求4所述的显示面板，其中，所述第一颜色、所述第二颜色和所述第三颜色分别为红色、绿色和蓝色中的一种。
  6. 如权利要求1-5任一项所述的显示面板，其中，所述开关器件为传输门；其中，
    所述传输门，其正相控制端和负相控制端均与所述控制单元相连，输入端与对应的运算放大器相连，输出端与对应的数据线相连。
  7. 如权利要求1-5任一项所述的显示面板，其中，所述开关器件为开关晶体管；其中，
    所述开关晶体管，其栅极与所述控制单元相连，第一极与对应的运算放大器相连，第二极与对应的数据线相连，所述第一极和所述第二极分别为源极和漏极中的一个。
  8. 如权利要求7所述的显示面板，其中，所述开关晶体管为N型晶体管或P型晶体管。
  9. 一种如权利要求1-8任一项所述显示面板的驱动方法，包括：
    在一帧画面内，依次扫描各行栅线；
    针对所述显示面板的第m列子像素，当扫描第n行栅线时，所述控制单元控制与所述第m列子像素连接的数据线所连接的其中一个开关器件处于导通状态，与所述第n行子像素对应的运算放大器通过所述处于导通状态的开关器件向所述第n行子像素输出数据信号。
  10. 一种显示装置，包括如权利要求1-8任一项所述的显示面板。
PCT/CN2015/089605 2015-04-24 2015-09-15 一种显示面板、驱动方法及显示装置 WO2016169194A1 (zh)

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