WO2017121005A1 - 显示面板的数据驱动方法 - Google Patents

显示面板的数据驱动方法 Download PDF

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Publication number
WO2017121005A1
WO2017121005A1 PCT/CN2016/074464 CN2016074464W WO2017121005A1 WO 2017121005 A1 WO2017121005 A1 WO 2017121005A1 CN 2016074464 W CN2016074464 W CN 2016074464W WO 2017121005 A1 WO2017121005 A1 WO 2017121005A1
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Prior art keywords
sub
pixels
signal
display panel
column
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English (en)
French (fr)
Inventor
陈彩琴
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US14/916,099 priority Critical patent/US20180308410A1/en
Publication of WO2017121005A1 publication Critical patent/WO2017121005A1/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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones 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
    • G09G3/2003—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
    • 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
    • G09G2310/0297—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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Definitions

  • the present invention relates to a driving method, and in particular to a data driving method of a display panel.
  • the size of the data driving circuit generally increases as the number of data lines increases, because the data driving circuit has as many output channels as the data lines of the display panel, which also makes the data driving circuit more expensive.
  • a demultiplexing (Demux) driving method is proposed to reduce the number of output channels of the data driving circuit.
  • Figure 1 shows a partial circuit diagram of a conventional DEMUX display panel
  • Figure 2 shows a timing diagram of a DEMUX drive signal. It can be seen from FIG. 1 and FIG. 2 that three data lines can be mapped to one data channel by the DEMUX driving signal, and when scanning a column of pixels, the data signals of the data lines D1, D2 and D3 are sequentially given, and then the data is given. Line D4, D5 and D6 data signals.
  • the RGBW technology adds a white sub-pixel to the RGB (red, green, blue) three primary colors to form an RGBW structure.
  • the RGBW technology adopts a unique driving method in signal processing, and reduces the number of sub-pixels by sharing sub-pixels by adjacent pixels, thereby achieving the effect of simulating high resolution with low resolution.
  • the advantage of this technology is higher visual brightness at the same brightness and lower cost.
  • FIG. 3 shows a schematic diagram of pixel distribution of an existing RGBW display panel using a DEMUX driving method.
  • the upper row of the WGBR and the lower row of the BRWG are repeated patterns, and adjacent pixels share sub-pixels, such as pixels (1, 1) and pixels (1, 2) Shared sub-pixels G and R.
  • sub-pixels such as pixels (1, 1) and pixels (1, 2) Shared sub-pixels G and R.
  • FIG. 4 shows a schematic diagram of pixel distribution of another conventional RGBW display panel using a DEMUX driving method.
  • RGBW color resistances are arranged out of order, as shown in FIG.
  • RGBW color resistance disordered arrangement can avoid the situation that the reloading of a single color sub-pixel under the polarity reversal is worse than that of the sub-pixels of other colors, thereby solving the problem of color shift, but the disadvantage is that the RGBW color resistance sequence Inconsistent, it is impossible to achieve effective mask sharing in production, but only share the GW mask.
  • an aspect of the present invention provides a data driving method for a display panel.
  • the display panel has a plurality of pixels, and each pixel includes four sub-pixels of red, green, blue, and white, and each sub-pixel of the display panel Arranging in the row direction and the column direction, wherein the display driving method comprises the steps of: providing a first demultiplexing signal to control a data signal supplying the first column of sub-pixels; and providing a second multi-path Signaling to control the data signal supplying the second column of sub-pixels; providing a third demultiplexing signal to control the data signal supplying the third column of sub-pixels; providing a fourth demultiplexing signal to supply the first Data signals of four columns of sub-pixels are controlled; wherein the first demultiplexing signal, the second demultiplexing signal, the third demultiplexing signal, and the fourth demultiplexing signal are The timing of the timing of one of the demultiplexed signals is different.
  • the sub-pixel arrangement of the display panel has a repeating pattern, and the repeating pattern sequentially arranges white, green, blue, and red sub-pixels in the upper row, and the lower rows are sequentially arranged. Blue, red, white, and green sub-pixels.
  • the driving order of some adjacent sub-pixels of a certain row is different from the order of its arrangement.
  • the driving order of adjacent blue sub-pixels and red sub-pixels of a certain row is different from the order of arrangement thereof.
  • Another aspect of the present invention provides a data driving method for a display panel, the display panel having a plurality of pixels, each pixel including four sub-pixels of red, green, blue, and white, and each sub-pixel of the display panel is in a row direction and Arranged in the column direction, the sub-pixel arrangement of the display panel has a repeating pattern, the repeating pattern sequentially aligns the white, green, blue and red sub-pixels in the upper row, and the lower rows sequentially arrange the blue, red, white and green sub-pixels
  • the display driving method includes the steps of: providing a first demultiplexing signal to control a data signal supplying the first column of sub-pixels; and providing a second demultiplexing signal to supply a second The data signals of the column sub-pixels are controlled; a third demultiplexing signal is provided to control the data signals supplying the third column of sub-pixels; and a fourth demultiplexing signal is provided to perform the data signals for supplying the fourth column of sub-pixels Controlling; where
  • the driving order of adjacent blue sub-pixels and red sub-pixels of a certain row is different from the order of arrangement thereof.
  • a further aspect of the present invention provides a data driving method for a display panel, the display panel having a plurality of pixels, each pixel comprising four sub-pixels of red, green, blue, and white, and each sub-pixel of the display panel is in a row direction and Arranged in the column direction, the sub-pixel arrangement of the display panel has a repeating pattern, the repeating pattern sequentially aligns the white, green, blue and red sub-pixels in the upper row, and the lower rows sequentially arrange the blue, red, white and green sub-pixels
  • the display driving method includes the steps of: providing a first demultiplexing signal to control a data signal supplying the first column of sub-pixels; and providing a second demultiplexing signal to supply a second The data signals of the column sub-pixels are controlled; a third demultiplexing signal is provided to control the data signals supplying the third column of sub-pixels; and a fourth demultiplexing signal is provided to perform the data signals for supplying the fourth column of sub-pixels Controlling
  • the data driving method of the display panel of the present invention drives the RGBW sub-pixels of the conventional arrangement of the color resistance by adjusting the DEMUX signal, and the timing intervals of the DEMUX signals are different, so that the timing of the DEMUX signals is out of order, so that single color sub-pixels can be avoided.
  • the color shift problem is improved, and the picture is relatively uniform.
  • the present invention adopts a layout in which RGBW color resists are conventionally arranged, the RGBW masks can all be shared, and there is no layout in which the existing RGBW color resists are arranged out of order, and the mask cannot be shared.
  • Figure 1 shows a partial circuit diagram of an existing DEMUX display panel.
  • Figure 2 shows a timing diagram of the DEMUX drive signal.
  • FIG. 3 shows a schematic diagram of pixel distribution of an existing RGBW display panel using a DEMUX driving method.
  • FIG. 4 shows a schematic diagram of pixel distribution of another conventional RGBW display panel using a DEMUX driving method.
  • FIG. 5 is a flow chart showing a data driving method of the display panel of the present invention.
  • Figure 6 shows the existing DEMUX signal drive timing for a conventional arrangement of RGBW color resists.
  • Figure 7 shows the DEMUX signal drive timing using the principles of the present invention in a conventional arrangement of RGBW color resists.
  • Figure 8 shows the existing DEMUX signal drive timing under the RGBW color-resistance out-of-order arrangement.
  • Figure 9 is a diagram showing the manner in which the DEMUX signal is generated in the present invention.
  • the invention provides a data driving method for a display panel, which adopts a demultiplexing (Demux) driving method, and the purpose is to avoid the polarity reversal of a single color sub-pixel when using RGBW conventional color resistance arrangement. Poor charging effect.
  • Demux demultiplexing
  • the display panel to which the data driving method of the present invention is applied has a plurality of pixels, each of which includes four sub-pixels of red (R), green (G), blue (B), and white (W), and each sub-pixel of the display panel is in a row direction. Arranged in the direction of the column.
  • the data driving method of the display panel of the present invention has the following steps.
  • a first demultiplexing signal (DE-mux1) is provided to control the data signals supplying the first column of sub-pixels.
  • a second demultiplexing signal (DE-mux2) is provided to control the data signals supplied to the second column of sub-pixels.
  • a third demultiplexing signal (DE-mux3) is provided to control the data signal supplying the third column of sub-pixels.
  • a fourth demultiplexing signal (DE-mux4) is provided to control the data signals supplying the fourth column of sub-pixels. The pulse intervals of the timings of one of the demultiplexed signals are different.
  • DE-mux1 is used to control the data signal to the first data line (corresponding to the first column of sub-pixels)
  • DE-mux2 is used to control the data signal to the second.
  • DE-mux3 is used to control the data signal to the third data line (corresponding to the third column of sub-pixels) switch
  • DE-mux4 is used to control the data signal to the fourth The switch of the data line (corresponding to the fourth column of sub-pixels).
  • one of the signals of DE-mux1, DE-mux2, DE-mux3, and DE-mux4 has different timing intervals, that is, data signals input to the same column of sub-pixels, and input intervals thereof. Not the same.
  • the timing of the demultiplexed signal (DEMUX) can be changed to be out of order or irregularly arranged, thereby making the picture display more uniform.
  • FIG. 6 shows the existing DEMUX signal drive timing for a conventional arrangement of RGBW color resists (also seen in Figure 3).
  • the conventional arrangement of RGBW color resistance has a repeating pattern of the upper row WGBR and the lower row BRWG. In the case of 4 ⁇ 4 pixel blocks, each sub-pixel is sequentially driven from left to right, that is, the driving sequence.
  • DE-mux1 sequentially signals the sub-pixels of the first column, that is, WBWB
  • DE-mux2 sequentially signals the sub-pixels of the second column, that is, GRGR
  • DE- Mux3 sequentially signals the sub-pixels of the third column, that is, BWBW
  • DE-mux4 sequentially signals the sub-pixels of the fourth column, that is, RGRG.
  • a driving method when a single color sub-pixel is reloaded under polarity reversal, the sub-pixel is different from other sub-pixels, and the screen is yellowish, so that there is a disadvantage of color shift.
  • Figure 7 shows the DEMUX signal drive timing using the principles of the present invention in a conventional arrangement of RGBW color resists.
  • the signals of DE-mux1, DE-mux3 and DE-mux4 are the same as those of Fig. 6. The difference is that the DE-mux1 signal in Fig. 7 is different from the DE-mux1 signal in Fig. 6, and the DE-mux2 signal and Fig. 6 The DE-mux2 signal is different.
  • the time interval of the pulses in the DE-mux2 signal is different, that is, the time interval of the pulses in the DE-mux2 signal is different, for example, the pulse of the sub-pixel B driving the fourth row of the first column is compared with the DE-mux1 of FIG. After the pulse is behind, the pulse of the sub-pixel R driving the fourth row of the second column is advanced with respect to the corresponding pulse of DE-mux2 of FIG. 6, that is, the time interval of the two pulses in DE-mux1 in FIG. 7 changes, DE The time interval of two pulses in -mux2 changes, and the driving order of adjacent B and R sub-pixels in the fourth row is different from the order of its arrangement.
  • the order of driving can be changed to be out of order or irregularly arranged, thus avoiding a single
  • the case where the color sub-pixels are heavily loaded and charged is inferior to the sub-pixels of other colors, so that the picture is relatively uniform.
  • FIG. 8 shows the existing DEMUX signal drive timing for RGBW color-resistance out-of-order arrangement (also seen in Figure 4).
  • the display effect produced by the data driving method adopted in the conventional arrangement of the RGBW color resists in FIG. 7 is similar to the display effect produced by the sub-pixels in which the RGBW color resists are sequentially arranged in the general driving manner in FIG. That is to say, the present invention can drive the conventionally arranged sub-pixels by changing the DEMUX signal waveform, and can obtain the same or similar display effect of the RGBW color-resistance disordered arrangement.
  • the DEMUX signal drive timing the color shift problem caused by the conventional arrangement of RGBW color resists can be achieved.
  • FIG. 9 shows a schematic diagram of the manner in which the DEMUX signal is generated in the present invention.
  • the DE-mux1 signal can be synthesized by selecting the A signal and the B signal by selecting signals.
  • one or more pulses of the DEMUX signal of either or both of DE-mux1, DE-mux2, DE-mux3, and DE-mux4 can be adjusted. It is also possible that the driving order of some adjacent sub-pixels of a certain row is different from the order of its arrangement.
  • the data driving method of the display panel of the present invention drives the RGBW sub-pixels of the conventional arrangement of the color resistance by adjusting the DEMUX signal, and the timing intervals of the DEMUX signals are different, so that the timing of the DEMUX signals is out of order, so that single color sub-pixels can be avoided.
  • the color shift problem is improved, and the picture is relatively uniform.
  • the present invention adopts a layout in which RGBW color resists are conventionally arranged, the RGBW masks can all be shared without the layout of the existing RGBW color resists, and the masks cannot be shared by the mask.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
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Abstract

一种显示面板的数据驱动方法，通过调整DEMUX信号来驱动色阻常规排列的RGBW子像素，DEMUX信号的时序的脉冲间隔不相同，使得DEMUX信号的时序乱序排列，这样可以避免单一颜色子像素重载充电的情况较其他颜色的子像素差的情形，改善色偏问题，使得画面较为均匀。并且，因采用RGBW色阻常规排列的布局，其RGBW遮罩可以全部共用，而不会有现有RGBW色阻乱序排列之布局，其遮罩无法共用的缺失。

Description

显示面板的数据驱动方法 技术领域
本发明涉及一种驱动方法，特别涉及一种显示面板的数据驱动方法。
 背景技术
现有技术中，数据驱动电路的尺寸通常随数据线的数量增加而增加，这是因为数据驱动电路具有与显示面板的数据线一样多的输出通道，这也使得数据驱动电路的成本较高。在相关技术中，提出了多路分用（Demux）的驱动方法，以缩减数据驱动电路的输出通道的数量。
图1显示现有的DEMUX显示面板的部分电路图，图2显示DEMUX驱动信号的时序图。从图1和图2可以看出，通过DEMUX驱动信号，可以将三条数据线对应到一个数据通道，且当扫描一列的像素时，依序给数据线D1、D2和D3数据信号，而后给数据线D4、D5和D6数据信号。
RGBW技术是在传统RGB（红、绿、蓝）三原色基础上增加了白色（White）子像素（Sub-pixel），形成RGBW结构。RGBW技术在信号处理上采用独有驱动方式，通过相邻像素共用子像素的方法，减少子像素个数，从而达到以低分辨率去模拟高分辨率的效果。此技术的优点是同样亮度下视觉亮度更高，以及成本更低。
图3显示一种现有的采用DEMUX驱动方式的RGBW显示面板的像素分布示意图。此一显示面板以上排WGBR、下排BRWG为其重复图样，相邻的像素共用子像素，例如像素(1, 1)和像素(1, 2)共用子像素G和R。这种显示面板采用Demux多路驱动时，极性反转下某单一颜色子像素重载充电的情况较其他颜色的子像素差，而有色偏的问题，但其优点是RGBW遮罩（Mask）可以全部共用。
图4显示另一种现有的采用DEMUX驱动方式的RGBW显示面板的像素分布示意图。此一显示面板中，RGBW色阻乱序排列，如图4所示。采用RGBW色阻乱序排列，可以避免极性反转下某单一颜色子像素重载充电的情况较其他颜色的子像素差的情形，进而解决色偏的问题，但其缺点是RGBW色阻顺序不一，无法达到生产上有效的遮罩共用，而只能共用GW遮罩。
因此，有必要对现有技术的技术问题提出解决方案。
 技术问题
本发明的目的在于提供一种显示面板的数据驱动方法，以解决RGBW色阻常规排列之布局产生色偏的技术问题，同时避免RGBW色阻乱序排列之布局下遮罩无法共用的缺失。
 技术解决方案
为实现上述目的，本发明一方面提供一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，其特征在于，所述显示驱动方法包含如下步骤：提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同。
本发明实施例的显示面板的数据驱动方法中，所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素。
本发明实施例的显示面板的数据驱动方法中，某一行的某些相邻的子像素的驱动顺序与其排列顺序不同。
本发明实施例的显示面板的数据驱动方法中，某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
本发明另一方面提供一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素，其特征在于，所述显示驱动方法包含如下步骤：提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同；且其中某一行的某些相邻的子像素的驱动顺序与其排列顺序不同。
本发明实施例的显示面板的数据驱动方法中，某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
本发明再一方面提供一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素，其特征在于，所述显示驱动方法包含如下步骤：提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同；且其中某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
 有益效果
本发明的显示面板的数据驱动方法通过调整DEMUX信号来驱动色阻常规排列的RGBW子像素，DEMUX信号的时序的脉冲间隔不相同，使得DEMUX信号的时序乱序排列，这样可以避免单一颜色子像素重载充电的情况较其他颜色的子像素差的情形，改善色偏问题，使得画面较为均匀。并且，因本发明采用RGBW色阻常规排列的布局，其RGBW遮罩可以全部共用，而不会有现有RGBW色阻乱序排列之布局，其遮罩无法共用的缺失。
 附图说明
图1显示现有的DEMUX显示面板的部分电路图。
图2显示DEMUX驱动信号的时序图。
图3显示一种现有的采用DEMUX驱动方式的RGBW显示面板的像素分布示意图。
图4显示另一种现有的采用DEMUX驱动方式的RGBW显示面板的像素分布示意图。
图5显示本发明的显示面板的数据驱动方法的流程示意图。
图6显示RGBW色阻常规排列下现有的DEMUX信号驱动时序。
图7显示RGBW色阻常规排列下运用本发明之原理的DEMUX信号驱动时序。
图8显示RGBW色阻乱序排列下现有的DEMUX信号驱动时序。
图9显示本发明中DEMUX信号的生成方式的示意图。
 本发明的最佳实施方式
为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，本发明说明书所使用的词语“实施例”意指用作实例、示例或例证，并不用于限定本发明。
本发明提供一种显示面板的数据驱动方法，其采用了多路分用（Demux）的驱动方式，目的在于采用RGBW常规色阻排列时，也可以达到避免某单一颜色子像素因极性反转充电较差的效果。
应用本发明之数据驱动方法的显示面板具有若干画素，每个画素包含红（R）、绿（G）、蓝（B）和白（W）四个子像素，显示面板的各个子像素依行方向和列方向排列。请参阅图5，本发明的显示面板的数据驱动方法具有如下步骤。
在步骤S10中，提供一第一多路分用信号（DE-mux1）以对供应第一列子像素的数据信号进行控制。在步骤S12中，提供一第二多路分用信号（DE-mux2）以对供应第二列子像素的数据信号进行控制。在步骤S14中，提供一第三多路分用信号（DE-mux3）以对供应第三列子像素的数据信号进行控制。在步骤S16中，提供一第四多路分用信号（DE-mux4）以对供应第四列子像素的数据信号进行控制。其中，这些多路分用信号中其中一个多路分用信号的时序的脉冲间隔不相同。
与图1和图2显示的架构类似的，DE-mux1用来控制数据信号传入第一条数据线（对应第一列子像素）的开关，DE-mux2用来控制数据信号传入第二条数据线（对应第二列子像素）的开关，DE-mux3用来控制数据信号传入第三条数据线（对应第三列子像素）的开关，DE-mux4用来控制数据信号传入第四条数据线（对应第四列子像素）的开关。在本发明中DE-mux1、DE-mux2、DE-mux3和DE-mux4的其中一个信号，其时序的脉冲间隔不相同，也就是说，输入到同一列子像素的数据信号，其输入的时间间隔不相同。这样，可以改变多路分用信号（DEMUX）的时序，使其乱序或不规则排列，进而使得画面显示较为均匀。
以下对本发明提出的技术方案与现有技术进行比较，并作说明。
图6显示RGBW色阻常规排列（亦见于图3）下现有的DEMUX信号驱动时序。从图6可以看出，RGBW色阻常规排列具有上排WGBR、下排BRWG的重复图样，以4×4像素区块来看，各个子像素依序由左而右进行驱动，亦即驱动顺序为WGBR、BRWG、WGBR和BRWG，其中DE-mux1是依序对第一列的子像素给信号，即WBWB；DE-mux2是依序对第二列的子像素给信号，即GRGR；DE-mux3是依序对第三列的子像素给信号，即BWBW；DE-mux4是依序对第四列的子像素给信号，即RGRG。此种驱动方式在极性反转下某单一颜色子像素重载充电的情况较其他颜色的子像素差，画面显示偏黄，因而有色偏的缺点。
图7显示RGBW色阻常规排列下运用本发明之原理的DEMUX信号驱动时序。如图7所示，DE-mux1、DE-mux3和DE-mux4信号与图6相同，差别是图7中的DE-mux1信号与图6的DE-mux1信号不同，DE-mux2信号与图6的DE-mux2信号不同。图7的DE-mux1信号中脉冲的时间间隔不同亦即DE-mux2信号中脉冲的时间间隔不同，例如驱动第一列第四行的子像素B的脉冲相对于图6的DE-mux1的对应脉冲落后了，驱动第二列第四行的子像素R的脉冲相对于图6的DE-mux2的对应脉冲提前了，也就是，图7中DE-mux1中两脉冲的时间间隔发生变化、DE-mux2中两脉冲的时间间隔发生变化，第四行中相邻的B和R子像素的驱动顺序与其排列顺序不同。这样，通过调整DE-mux1、DE-mux2、DE-mux3和DE-mux4中任一个或一个以上的DEMUX信号的脉冲，可以改变驱动的顺序，使其乱序或不规则排列，这样可以避免单一颜色子像素重载充电的情况较其他颜色的子像素差的情形，使得画面较为均匀。
图8显示RGBW色阻乱序排列（亦见于图4）下现有的DEMUX信号驱动时序。图7中对RGBW色阻常规排列采用的数据驱动方式所产生的显示效果，类似于图8中以一般的驱动方式驱动RGBW色阻乱序排列的子像素所产生的显示效果。也就是说，本发明通过改变DEMUX信号波形对常规排列的子像素进行驱动，可以得出RGBW色阻乱序排列相同或类似的显示效果。这样，通过调整DEMUX信号驱动时序，即能RGBW色阻常规排列所导致的色偏问题。
请参阅图9，其显示本发明中DEMUX信号的生成方式的示意图。以发生变化的DE-mux1为例，可以通过选择信号选取A信号和B信号，来合成DE-mux1信号。
运用本发明之上述概念，可以理解的是，可以调整DE-mux1、DE-mux2、DE-mux3和DE-mux4中任一个或任两个以上的DEMUX信号的一个或两个以上的脉冲。也可以是，某一行的某些相邻的子像素的驱动顺序与其排列顺序不同。
本发明的显示面板的数据驱动方法通过调整DEMUX信号来驱动色阻常规排列的RGBW子像素，DEMUX信号的时序的脉冲间隔不相同，使得DEMUX信号的时序乱序排列，这样可以避免单一颜色子像素重载充电的情况较其他颜色的子像素差的情形，改善色偏问题，使得画面较为均匀。并且，因本发明采用RGBW色阻常规排列的布局，其RGBW遮罩可以全部共用，而不会有现有RGBW色阻乱序排列之布局，其遮罩（Mask）无法共用的缺失。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (7)

  1. 一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，其特征在于，所述显示驱动方法包含如下步骤：
    提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；
    提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；
    提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；
    提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；
    其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同。
  2. 根据权利要求1所述的显示面板的数据驱动方法，其特征在于：所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素。
  3. 根据权利要求1所述的显示面板的数据驱动方法，其特征在于：某一行的某些相邻的子像素的驱动顺序与其排列顺序不同。
  4. 根据权利要求1所述的显示面板的数据驱动方法，其特征在于：某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
  5. 一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素，其特征在于，所述显示驱动方法包含如下步骤：
    提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；
    提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；
    提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；
    提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；
    其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同；且其中某一行的某些相邻的子像素的驱动顺序与其排列顺序不同。
  6. 根据权利要求1所述的显示面板的数据驱动方法，其特征在于：某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
  7. 一种显示面板的数据驱动方法，所述显示面板具有若干画素，每个画素包含红、绿、蓝和白四个子像素，所述显示面板的各个子像素依行方向和列方向排列，所述显示面板的子像素排列具有重复图样，所述重复图样为上排依序排列白、绿、蓝和红子像素，下排依序排列蓝、红、白和绿子像素，其特征在于，所述显示驱动方法包含如下步骤：
    提供一第一多路分用信号以对供应第一列子像素的数据信号进行控制；
    提供一第二多路分用信号以对供应第二列子像素的数据信号进行控制；
    提供一第三多路分用信号以对供应第三列子像素的数据信号进行控制；
    提供一第四多路分用信号以对供应第四列子像素的数据信号进行控制；
    其中所述第一多路分用信号、所述第二多路分用信号、所述第三多路分用信号及所述第四多路分用信号中的其中一个多路分用信号的时序的脉冲间隔不相同；且其中某一行的相邻的蓝子像素和红子像素的驱动顺序与其排列顺序不同。
PCT/CN2016/074464 2016-01-13 2016-02-24 显示面板的数据驱动方法 Ceased WO2017121005A1 (zh)

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