CN111025710B - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN111025710B CN111025710B CN201911360970.1A CN201911360970A CN111025710B CN 111025710 B CN111025710 B CN 111025710B CN 201911360970 A CN201911360970 A CN 201911360970A CN 111025710 B CN111025710 B CN 111025710B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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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
Abstract
The embodiment of the invention discloses a display panel and a display device, wherein the display panel comprises a plurality of first pixel units and second pixel units which are arranged in an array; the first pixel unit and the second pixel unit are arranged in rows at intervals and are respectively arranged in columns; each pixel unit comprises 2 rows and 3 columns of sub-pixels; in the first pixel unit: the first row comprises a first (color) sub-pixel, a second (color) sub-pixel and a third (color) sub-pixel, and the second row comprises a first sub-pixel, a second sub-pixel and a fourth (color) sub-pixel; in the second pixel unit: the first row comprises a first sub-pixel, a second sub-pixel and a fourth sub-pixel, and the second row comprises a first sub-pixel, a second sub-pixel and a third sub-pixel; along the row direction, every 6 columns of pixel units are a pixel group, and the polarity of the data voltage of each sub-pixel of each pixel group is a polarity period; in each polarity period, the driving polarities of at least some of the same color sub-pixels in each row are different. This improves the level of disturbance.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
With the development of Display technology, Liquid Crystal Display (LCD) panels and Organic Light Emitting Diode (OLED) Display panels gradually become two major Display panels in the Display field, and LCD panels and OLED Display panels are widely used in devices or scenes capable of integrating Display functions, known by those skilled in the art, such as computers, mobile phones, wearable devices, and vehicles. The LCD panel applies an electric field to the liquid crystal layer between the two substrates to change the orientation of liquid crystal molecules in the liquid crystal layer, so that the modulation of light rays incident to the liquid crystal layer is realized, and the LCD panel displays a picture to be displayed.
In general, in order to improve the aging of liquid crystal molecules to prolong the service life of an LCD panel, the LCD panel is driven by polarity inversion. The polarity inversion method may include line inversion, column inversion, dot inversion, etc.; the line inversion is with the phase of the image data applied to the pixel rows, the column inversion is with the phase of the graphic data applied to the pixel columns, and the dot inversion is with the phase of the image data applied to the pixel rows and pixel columns. However, when the LCD panel is driven by column inversion, there is a horizontal disturbance phenomenon, which results in poor display effect of the LCD panel.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, which are used for improving the horizontal disturbance problem, so that the display panel is ensured to have a better display effect.
In a first aspect, an embodiment of the present invention provides a display panel, including: the pixel units are arranged in an array; the plurality of pixel units comprise a plurality of first pixel units and a plurality of second pixel units;
the first pixel units and the second pixel units are arranged at intervals along the row direction; the first pixel units are sequentially arranged or the second pixel units are sequentially arranged along the column direction;
the first pixel unit comprises 2 rows and 3 columns of sub-pixels; the second pixel unit comprises 2 rows and 3 columns of sub-pixels; the first row of pixel units of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged; the second row of pixel units of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged; the first row of pixel units of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged; the second row of pixel units of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged;
in the row direction, every 6 columns of the pixel units are a pixel group, and the polarity of the data voltage applied to each sub-pixel of each pixel group is a polarity period; in each polarity period, the driving polarities of at least some of the same color sub-pixels in each row are different.
In a second aspect, an embodiment of the present invention further provides a display device, including any one of the display panels provided in the first aspect.
According to the display panel provided by the embodiment of the invention, the plurality of pixel units are arranged in an array manner, and each pixel unit comprises a plurality of first pixel units and a plurality of second pixel units; along the row direction, the first pixel units and the second pixel units are sequentially arranged at intervals; the first pixel units are arranged in sequence along the column direction, or the second pixel units are arranged in sequence; the first pixel unit and the second pixel unit respectively comprise 2 rows and 3 columns of sub-pixels, the first row of sub-pixels of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged, and the second row of sub-pixels of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged; the first row of sub-pixels of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged, and the second row of sub-pixels of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged; along the row direction, every 6 columns of pixel units are a pixel group, and the polarity of the data voltage applied to each sub-pixel of each pixel group is a polarity period; in each polarity period, the driving polarities of at least some of the same color sub-pixels in each row are different. Therefore, the polarities of the sub-pixels in the same row and the same color are not completely the same, so that the disturbance directions of the data signals corresponding to the sub-pixels to the common electrode signal are different, the disturbance influences in different directions can be weakened or even offset, the stability of the common electrode signal can be improved, the horizontal disturbance phenomenon can be improved, and the display panel and the display device comprising the display panel can be ensured to have better image display effect.
Drawings
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art;
FIG. 2 is a schematic diagram illustrating the distribution of the polarity of the blue frame in the display panel of FIG. 1;
FIG. 3 is a schematic diagram of a horizontal disturbance phenomenon in the display panel of the example of FIG. 1;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a partial structure of the display panel of FIG. 4;
FIG. 6 is a schematic diagram illustrating the distribution of the polarity of the blue frame in the display panel of FIG. 5;
FIG. 7 is a schematic diagram illustrating a comparison between a driving timing of a display panel according to an embodiment of the present invention and a driving timing of a display panel according to the prior art;
FIG. 8 is a schematic view of another partial structure of the display panel of FIG. 4;
FIG. 9 is a schematic diagram illustrating the distribution of the polarity of the blue frame in the display panel of FIG. 8;
FIG. 10 is a schematic view of another partial structure of the display panel of FIG. 4;
FIG. 11 is a schematic diagram illustrating the distribution of the polarity of the blue frame in the display panel of FIG. 10;
FIG. 12 is a schematic diagram illustrating a comparison between the display panel provided by the embodiment of the present invention and the display panel provided by the prior art in terms of disturbance;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 14 is a partial structural schematic diagram of the display device of the example of fig. 13.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a display panel provided in the prior art, which shows a local distribution manner of driving polarities of the display panel. Referring to fig. 1, the display panel 01 includes sub-pixels arranged in an array, and the sub-pixels include a first sub-pixel 011, a second sub-pixel 012, a third sub-pixel 013, and a fourth sub-pixel 014; the sub-pixel array is formed by tiling a minimum repeating unit 010 along a row direction X and a column direction Y, wherein the arrangement of sub-pixels in the minimum repeating unit 010 is as follows:
011 012 013 011 012 014；
011 012 014 011 012 013。
on the basis, the driving mode of column inversion is combined, so that the service life of the display panel 01 can be prolonged while the picture display is realized. However, based on the above subpixel arrangement and column inversion driving scheme, the third subpixel 013 and the fourth subpixel 014 in the same column share the same data line 016; because the polarity of the third sub-pixels 013 in the same row is the same, the polarity of the third sub-pixels 013 in two adjacent rows is opposite; when the monochrome picture of the third subpixel 013 is displayed in the central region of the nine-square grid of the display panel 01, and the other regions display the same luminance picture, in the data writing process of two adjacent rows of subpixels, the changing directions of the data signals on the data line 016 corresponding to the third subpixel 013 are the same, and the coupling effects of the common electrode signals caused by the changing directions are the same, so that the common electrode signals cannot be recovered, and thus, a disturbance (i.e., a horizontal crosstalk, also referred to as a horizontal crosstalk) in the row direction X is generated. Specifically, referring to fig. 1 to 3, fig. 2 exemplarily shows a polarity distribution 02 of the third subpixel 013, and fig. 3 exemplarily shows a coupling trend of the data signal Vdata and the common electrode signal Vcom 0; the CKHV1, CKHV2 and CKHV3 represent data selection signals of the first sub-pixel 011, the second sub-pixel 012 and the third sub-pixel 013 (including the fourth sub-pixel 014 in the same column), respectively, which enable writing of corresponding data signals in the level period (taking the high level period as an example). As can be seen from fig. 1 and 2, the odd-numbered rows (e.g., row 1, row 3, row 5, and row 7) of the third subpixels 013 are all driven with positive polarity (+) and the even-numbered rows (e.g., row 2, row 4, row 6, and row 8) of the third subpixels 013 are all driven with negative polarity (-) respectively; therefore, in the refresh process of the nine-grid picture, when the current sub-pixel row is switched to the next sub-pixel row, the potential of the data signal Vdata0 on the data line 016 corresponding to the third sub-pixel 013 changes from a low potential signal to a high potential signal (described in detail below with reference to fig. 7), and the coupling direction of the data signal Vdata0 to the common electrode signal Vcom0 is the same; alternatively, the data signal Vdata0 on the data line 016 corresponding to the third sub-pixel 013 changes from high to low, and the coupling direction of the data signal Vdata0 to the common electrode signal Vcom0 is also the same. Therefore, when the sub-pixel data signals of the adjacent rows are switched, the potential variation of the data signal Vdata0 is consistent with the coupling direction of the common electrode signal Vcom0, the coupling effect is significant, that is, the consistency of the disturbance trend causes the common electrode signal Vcom0 to be disturbed greatly, and the signal is not easy to recover (i.e., "recover"), as shown in fig. 3. After the enable period of the third data selection signal CKHV3 is over, the common electrode signal Vcom0 still does not recover, and thus horizontal disturbance is generated, resulting in poor display effect.
In view of the foregoing problems, embodiments of the present invention provide a display panel, in which the disturbance of the change of the data signal to the common electrode signal along the row direction of the display panel is not all in the same direction (there are positive and negative directions) by changing the polarity distribution manner of the sub-pixels in the display panel, so that the disturbance signals in different directions can be mutually weakened or even cancelled, thereby facilitating improvement of the horizontal disturbance phenomenon, facilitating improvement of signal stability, and ensuring that the display panel has a better display effect. This is the core concept of the present invention, and the following describes the display panel and the display device provided by the embodiment of the present invention, and the effect of improving the level disturbance, with reference to fig. 4 to 14.
Referring to fig. 4, and referring to fig. 5, fig. 8 or fig. 10, the display panel 10 includes a plurality of pixel units 110, and the plurality of pixel units 110 are arranged in an array; the plurality of pixel units 110 include a plurality of first pixel units 111 and a plurality of second pixel units 112; the first pixel units 111 and the second pixel units 112 are arranged at intervals along the row direction X; along the column direction Y, the first pixel units 111 are arranged in sequence or the second pixel units 112 are arranged in sequence; the first pixel unit 111 includes 2 rows and 3 columns of sub-pixels 151; the second pixel unit 112 includes 2 rows and 3 columns of sub-pixels 151; the first row of pixel units of the first pixel unit 111 comprises a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230 which are sequentially arranged; the second row of the first pixel unit 11 includes a first color sub-pixel 210, a second color sub-pixel 220 and a fourth color sub-pixel 240 arranged in sequence; the first row of pixel units of the second pixel unit 112 comprises a first color sub-pixel 210, a second color sub-pixel 220 and a fourth color sub-pixel 240 which are sequentially arranged; the second row of pixel units of the second pixel unit 112 includes a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230 which are sequentially arranged; along the row direction X, every 6 columns of pixel units 110 are a pixel group 150, and the polarity of the data voltage applied to each sub-pixel 151 of each pixel group 150 is a polarity period; in each polarity period, the driving polarities of at least some of the same color sub-pixels in each row of sub-pixels 151 are different.
The first pixel units 111 and the second pixel units 112 are sequentially arranged at intervals along the row direction X to form pixel rows, and each pixel row includes a first color sub-pixel 210, a second color sub-pixel 220, a third color sub-pixel 230, and a fourth color sub-pixel 240. Meanwhile, the sub-pixels 151 in the first pixel unit 111 are arranged in three pixel columns along the column direction Y, and the sub-pixels 151 in the second pixel unit 112 are arranged in three pixel columns along the column direction Y; the pixel column includes three different sub-pixel arrangement modes, specifically: one pixel column includes only the first color sub-pixel 210, another pixel column includes only the second color sub-pixel 220, and yet another pixel column includes only the third color sub-pixel 230 and the fourth color sub-pixel 240.
Based on this, the polarity distribution of the display panel 10 is set, specifically, the driving polarities of the sub-pixels with the same color in the sub-pixels 151 in the same row are different (refer to fig. 6, 9 and 11), so that when the data signals of the sub-pixels in the adjacent row are switched, the disturbance directions of the data signals to the common electrode signal are not completely the same, and the signals in different directions are mutually attenuated to improve the signal disturbance in the row direction.
The principle of improving signal disturbance in the row direction is exemplarily described below in conjunction with fig. 1, 5 and 7. In fig. 7, VG1 represents the scanning signal of the sub-pixel of the current row; CKHV1, CKHV2 and CKHV3 represent data selection signals of the first color sub-pixel 210, the second color sub-pixel 220 and the third color sub-pixel 230 (including the fourth color sub-pixel 240 in the same column), respectively, which enable the writing of corresponding data signals during a period of high level (for example); VD01, VD02, VD03, VD04 are data signals Vdata0 applied to data lines D01, D02, D03, and D04, respectively, and VD1, VD2, VD3, and VD4 are data signals Vdata1 applied to data lines D1, D2, D3, and D4, respectively; VCOM0 is the common electrode signal in the prior art, and VCOM1 is the common electrode signal in the embodiments of the present invention. Next, the case where only the third color subpixel 013 is lit in the central region, the data signal change of the 3 rd row (current row) subpixel 151 with respect to the 2 nd row (previous row) subpixel 151, and the positive polarity signal is +5V and the negative polarity signal is-5V will be described as an example for displaying the aforementioned squared frame.
Referring to fig. 1 and 7, in the prior art, the data signal Vdata0 is changed as follows:
in the last line, VD01 is a 0V signal, and in the current line, VD01 is a +5V signal;
in the last line, VD02 is a-5V signal, and in the current line, VD02 is a 0V signal;
in the last line, VD03 is a 0V signal, and in the current line, VD03 is a +5V signal;
in the last line, VD04 is a-5V signal, and in the current line, VD04 is a 0V signal;
therefore, in the prior art, the data signal Vdata0 jumps from a lower level to a higher level, and the disturbance tendency of the data signal Vdata0 to the common electrode signal VCOM0 is the same, so that the disturbance is large, and the common electrode signal VCOM0 is not easy to recover.
In conjunction with the polarity profile shown in fig. 5 and fig. 7, in the embodiment of the present invention, the data signal Vdata1 changes to:
in the last line, VD1 is a 0V signal, and in the current line, VD1 is a +5V signal;
in the last line, VD2 is a-5V signal, and in the current line, VD2 is a 0V signal;
in the last line, VD3 is 0V signal, and in the current line, VD3 is-5V signal;
in the last line, VD4 is a +5V signal, and in the current line, VD4 is a 0V signal;
therefore, in the embodiment of the invention, the data signals Vdata1 of the data lines D1 and D2 both transition from a lower level to a higher level, which causes a positive disturbance of the common electrode signal VCOM 1; the data signals Vdata1 of the data lines D3 and D4 both transition from a higher level to a lower level, which causes a negative perturbation of the common electrode signal VCOM 1. Therefore, the variation of the data signal Vdata1 has different disturbance trends on the common electrode signal VCOM1, and the disturbance signals with different trends can weaken or even cancel each other; therefore, the disturbance of the change of the data signal Vdata1 to the common electrode signal VCOM1 can be reduced, and the stability of the common electrode signal VCOM1 can be improved.
The principle of improving the horizontal disturbance according to the embodiment of the present invention is described above by taking only the coupling of the common electrode signal caused by the third color sub-pixel 230 as an example, and the fourth color sub-pixel 240 can be understood by referring to the explanation above in the same way, which is not described again in the embodiment of the present invention.
It should be noted that fig. 5 and 7 only exemplarily show a driving polarity setting manner based on the pixel arrangement. In other embodiments, in order to realize that the driving polarities of the sub-pixels of the same color in the same pixel row are different, the driving polarities may also be set to other polarity setting manners, and the embodiment of the present invention exemplarily shows another two polarity setting manners. Hereinafter, based on the color of the sub-pixel 151, and the pixel arrangement thereof, the first polarity arrangement will be described with reference to fig. 5 and 6, the second polarity arrangement will be described with reference to fig. 8 and 9, and the third polarity arrangement will be described with reference to fig. 10 and 11, respectively.
Optionally, with continued reference to fig. 5, 8 or 10, the first color sub-pixel 210, the second color sub-pixel 220, the third color sub-pixel 230 and the fourth color sub-pixel 240 may be respectively one of a red sub-pixel, a green sub-pixel, a blue sub-pixel and a white sub-pixel, and are different from each other.
Accordingly, the display panel 10 can realize color display and white display, and the image display luminance of the display panel 10 can be improved by using the high light transmittance of the white sub-pixel, thereby being advantageous to ensure a good image display effect.
Illustratively, hereinafter, "the first color sub-pixel 210 is a red (R) sub-pixel; the second color sub-pixel 220 is a green (G) sub-pixel; the third color sub-pixel 230 is a blue (B) sub-pixel; the fourth color sub-pixel 240 is a white (W) sub-pixel "for example, and the display panel 10 provided by the embodiment of the present invention is exemplarily described.
Based on this, taking 4 rows of sub-pixels as an example, in a polarity period, the sub-pixels may be arranged in the following manner:
R G B R G W R G B R G W R G B R G W
R G W R G B R G W R G B R G W R G B
R G B R G W R G B R G W R G B R G W
R G W R G B R G W R G B R G W R G B
it is understood that only 4 rows of sub-pixels are taken as an example for illustration in the embodiment of the present invention. In the actual product structure of the display panel 10, every 6 columns of the pixel units 110 all the sub-pixels 151 belong to the same polarity period.
Optionally, with reference to fig. 5, in the row direction X, the polarities of the data voltages of the sub-pixels 151 in each pixel group 150 are +, +, -, +, and+, in turn.
In combination with the sub-pixel arrangement, the color and polarity distribution of a polarity cycle of the display panel 10 can be:
R+G-B+R-G+W-R-G+B-R+G-W+R-G+B-R+G-W+
R+G-W+R-G+B-R-G+W-R+G-B+R-G+W-R+G-B+
R+G-B+R-G+W-R-G+B-R+G-W+R-G+B-R+G-W+
R+G-W+R-G+B-R-G+W-R+G-B+R-G+W-R+G-B+
in this way, in the same pixel row, the driving polarity of the red sub-pixel is positive-negative alternation, the driving polarity of the green sub-pixel is positive-negative alternation, the driving polarity of the blue sub-pixel is at least partially different, and the driving polarity of the white sub-pixel is at least partially different; in the same pixel column, red sub-pixels with the same driving polarity are sequentially arranged, or green sub-pixels with the same driving polarity are sequentially arranged, or blue sub-pixels and white sub-pixels with the same driving polarity are sequentially arranged at intervals.
In this way, it is possible to realize that the driving polarities of the sub-pixels of the same color in the same pixel row are at least partially different (see fig. 6, which exemplarily shows the driving polarity of the blue sub-pixel corresponding to fig. 5), so that when the sub-pixels in the adjacent row perform data switching, the disturbance trends of the data signals on the common electrode signal by the changes of the data lines corresponding to the blue sub-pixel and the white sub-pixel are opposite, and the data signals can be mutually weakened or even cancelled, so as to improve the horizontal disturbance phenomenon.
In other embodiments, when the first pixel row in a polarity period has negative polarity, the color and polarity distribution of the polarity period of the display panel 10 may be:
R-G+B-R+G-W-R+G-B+R-G+W-R+G-B+R-G+W+
R-G+W-R+G-B-R+G-W+R-G+B-R+G-W+R-G+B+
R-G+B-R+G-W-R+G-B+R-G+W-R+G-B+R-G+W+
R-G+W-R+G-B-R+G-W+R-G+B-R+G-W+R-G+B+
similar to the polarity distribution shown in fig. 5, when the data switching is performed on the sub-pixels in the adjacent columns of the display panel 10, the disturbance trends of the data signals on the data lines corresponding to the blue sub-pixel and the white sub-pixel to the common electrode signal are opposite, and the data signals can be mutually attenuated and even cancelled, so that the horizontal disturbance phenomenon can be improved.
Optionally, with continued reference to fig. 5, the display panel 10 further includes a plurality of data lines 140; each column of sub-pixels 151 is connected to the same data line 140.
Wherein, the data signals are provided to the sub-pixels 151 in the same column through the same data line 140.
Note that the lengths of the data lines D1, D2, D3, and D4 shown in fig. 5 are different from the lengths of the other data lines 140 extending in the same direction, and reference numerals are given only for convenience. In an actual panel structure of the display panel 10, the lengths of the data lines 140 may be the same or different, and may be set according to actual requirements of the display panel 10, which is not limited in the embodiment of the present invention.
Optionally, with continued reference to fig. 4 and 8, in each pixel group 150, the polarities of the data voltages of the sub-pixels 151 of each row of the odd-numbered pixel units 110 are +, +, - +, and +; in each pixel group 150, the polarities of the data voltages of the sub-pixels 151 of each row of the even-numbered pixel units 110 are-, +, and+, respectively.
In combination with the sub-pixel arrangement, the color and polarity distribution of a polarity cycle of the display panel 10 can be:
R+G-B+R-G+W-R-G+B-R+G-W+R-G+B-R+G-W+
R+G-W+R-G+B-R-G+W-R+G-B+R-G+W-R+G-B+
R-G+B-R+G-W-R+G-B+R-G+W-R+G-B+R-G+W+
R-G+W-R+G-B-R+G-W+R-G+B-R+G-W+R-G+B+
thus, in the same pixel row, the driving polarities of the red sub-pixels are at least partially different, the driving polarities of the green sub-pixels are at least partially different, the driving polarities of the blue sub-pixels are at least partially different, and the driving polarities of the white sub-pixels are at least partially different; in the same pixel column, the driving polarity of the red sub-pixel is arranged at intervals in sequence every two rows, or the driving polarity of the green sub-pixel is arranged at intervals in sequence every two rows, or the blue sub-pixel and the white sub-pixel with the same driving polarity are arranged at intervals in sequence, or the blue sub-pixel and the white sub-pixel with different driving polarities are arranged at intervals in sequence.
With this arrangement, it is possible to realize that the driving polarities of the sub-pixels of the same color in the same pixel row are at least partially different (see fig. 9, which exemplarily shows the driving polarity of the blue sub-pixel corresponding to fig. 8), so that when the sub-pixels in the adjacent row perform data switching, the disturbance trends of the data signals on the data lines corresponding to the blue sub-pixel and the white sub-pixel are opposite to each other, and the data signals can be mutually attenuated or even cancelled, so as to improve the horizontal disturbance phenomenon. Meanwhile, the core concept of the invention is applied to the zigzag pixel design structure, which is beneficial to optimizing the display uniformity of the display panel 10 and avoiding the distribution condition that two positive columns and two negative columns are arranged, namely the driving polarities of two adjacent columns are the same, thereby avoiding longitudinal disturbance and being beneficial to ensuring that the display panel 10 has better display effect.
Optionally, with continued reference to fig. 4 and 10, in each pixel group 150, the polarities of the data voltages of the sub-pixels 151 of each row of the odd-numbered pixel units 110 are sequentially-, +, and+, along the row direction; in each pixel group 150, the polarities of the data voltages of the sub-pixels 151 of each row of the even-numbered pixel units 110 are +, +, -, +, and +,.
In combination with the sub-pixel arrangement, the color and polarity distribution of a polarity cycle of the display panel 10 can be:
R-G+B-R+G-W-R+G-B+R-G+W-R+G-B+R-G+W+
R-G+W-R+G-B-R+G-W+R-G+B-R+G-W+R-G+B+
R+G-B+R-G+W-R-G+B-R+G-W+R-G+B-R+G-W+
R+G-W+R-G+B-R-G+W-R+G-B+R-G+W-R+G-B+
thus, in the same pixel row, the driving polarities of the red sub-pixels are at least partially different, the driving polarities of the green sub-pixels are at least partially different, the driving polarities of the blue sub-pixels are at least partially different, and the driving polarities of the white sub-pixels are at least partially different; in the same pixel column, the driving polarity of the red sub-pixel is arranged at intervals in sequence every two rows, or the driving polarity of the green sub-pixel is arranged at intervals in sequence every two rows, or the blue sub-pixel and the white sub-pixel with the same driving polarity are arranged at intervals in sequence, or the blue sub-pixel and the white sub-pixel with different driving polarities are arranged at intervals in sequence.
With this arrangement, it is possible to realize that the driving polarities of the sub-pixels of the same color in the same pixel row are at least partially different (see fig. 11, which exemplarily shows the driving polarity of the blue sub-pixel corresponding to fig. 10), so that when the sub-pixels in the adjacent row perform data switching, the disturbance tendencies of the common electrode signal by the changes of the data signals on the data lines corresponding to the blue sub-pixel and the white sub-pixel are opposite, and can be mutually weakened or even cancelled, thereby improving the horizontal disturbance phenomenon. Meanwhile, the core concept of the invention is applied to the zigzag pixel design structure, which is beneficial to optimizing the display uniformity of the display panel 10 and avoiding the distribution condition that two positive columns and two negative columns are arranged, namely the driving polarities of two adjacent columns are the same, thereby avoiding longitudinal disturbance and being beneficial to ensuring that the display panel 10 has better display effect.
Optionally, with continued reference to fig. 8 and 10, the display panel 10 further includes a plurality of data lines 140; the sub-pixels 151 belonging to the odd-numbered pixel units 110 in the same column of sub-pixels 151 are connected to the same data line 140; the sub-pixels 151 belonging to the even-numbered rows of the pixel units 110 in the same column of the sub-pixels 151 are connected to the same data line; the sub-pixels 151 belonging to the odd-numbered row of pixel units 110 in the same column of sub-pixels 151 are connected to different data lines 140 from the sub-pixels 151 belonging to the even-numbered row of pixel units 110.
With this arrangement, the driving polarities of two pixel units 110 connected in the same pixel column can be opposite. Meanwhile, the driving polarity of the sub-pixels 151 is set on the premise that the wiring mode of the data lines 140 is not changed, so that the wiring mode of the data lines 140 is simple; it is beneficial to reduce the overall design difficulty and the manufacturing process difficulty of the display panel 10.
Next, referring to fig. 12, an exemplary description will be given of the improvement of the signal disturbance of the display panel 10 shown in fig. 5 with respect to the display panel 01 shown in fig. 1.
Referring to fig. 12, wherein VGATE0, VCKH0 and VCOM0 represent scan signals, data select signals and common electrode signals, respectively, in the prior art, and VGATE1, VCKH1 and VCOM1 represent scan signals, data select signals and common electrode signals, respectively, in an embodiment of the present invention; and each signal-amplifies a period including two data selection signals, the timing amplification portions in the related art and the embodiment of the present invention are illustrated by QZ0 and QZ1, respectively. As can be seen from fig. 12, in the prior art, the disturbance (i.e., the fluctuation amplitude) of the common electrode signal VCOM0 is large and is not easy to recover; the common electrode signal VCOM1 of the display panel provided in the embodiment of the present invention has less disturbance and can be recovered, so that the stability of the common electrode signal VCOM1 is improved, and the problem of signal disturbance is solved in the time sequence of the prior art.
The manner in which the data signal is provided is illustratively described below in conjunction with fig. 14.
Alternatively, referring to fig. 14, the structure of the driving chip 320 in the display device 50 is described. The display panel 10 further includes a plurality of data lines 140 and a plurality of multiplexing circuits 160; each multiplexing circuit 160 includes an input terminal 161 and three output terminals 162; the multiplexing circuit 160 includes a plurality of selection circuit groups 164; each of the selection circuit groups 164 includes a first multiplexing circuit 1641, a second multiplexing circuit 1642, a third multiplexing circuit 1643, a fourth multiplexing circuit 1644, a fifth multiplexing circuit 1645, and a sixth multiplexing circuit 1646; along the row direction X, the odd-numbered column data lines 140 are electrically connected with the output ends 162 of the first multiplexing circuit 1641, the third multiplexing circuit 1643 and the fifth multiplexing circuit 1645 in a one-to-one correspondence manner; along the row direction X, the even column data lines 140 are electrically connected with the output ends 162 of the second routing circuit 1642, the fourth routing circuit 1644 and the sixth routing circuit 1646 in a one-to-one correspondence manner; the connection line 313 between the input terminal 161 of the third multiplexing circuit 1643 and the data signal interface 322 of the driver chip 320 and the connection line 314 between the input terminal 161 of the fourth multiplexing circuit 1644 and the data signal interface 322 of the driver chip 320 cross; the connection line 315 between the input terminal 161 of the fifth multiplexing circuit 1645 and the data signal interface 322 of the driver chip 320 crosses the connection line 316 between the input terminal 161 of the sixth multiplexing circuit 1646 and the data signal interface 322 of the driver chip 320.
The multiplexer circuit 160 may also be referred to as a multiplexer, a data selector, a data selection circuit, or a Demux circuit. The multiplexing circuit 160 can gate the data signal of the same input terminal 161 to three different output terminals 162 to apply to the pixel columns of the corresponding column, so that the number of the connecting lines between the input terminal 161 and the data signal interface 322 can be reduced on the premise that the number of the pixel columns is not changed, thereby reducing the number of the routing lines of the lower frame of the display panel 10, being beneficial to reducing the wiring reserved space, realizing the narrower lower frame design, and improving the screen occupation ratio.
The driving polarities of the data signals transmitted by the first multiplexing circuit 1641, the fourth multiplexing circuit 1644 and the sixth multiplexing circuit 1646 are the same, and the driving polarities of the data signals transmitted by the second multiplexing circuit 1642, the third multiplexing circuit 1643 and the fifth multiplexing circuit 1645 are the same. Illustratively, the former is a positive polarity signal, and the latter transmits a negative polarity signal; the polarity of the data signals is cycled into the display panel 10 by "+, -, +". With such an arrangement, the polarity distribution of the display panel 10 according to the embodiment of the present invention can be achieved, and the coupling degree of the common electrode signal can be reduced, so that the horizontal disturbance phenomenon can be improved. Meanwhile, the polarity output cycles supported by the interface of the driver chip 320 are "+, -,", so that the connection between the multi-path selection circuit 160 and the driver chip 320 needs to be jumped to meet the interface requirement of the driver chip 320.
It should be noted that fig. 14 only exemplarily shows that the entire multiplexer circuit 160 has a 2:6 structure, and in other embodiments, the multiplexer circuit may also be set to have a 1:3 structure or other multiplexer circuit structures known by those skilled in the art, which is neither described nor limited in this embodiment of the present invention.
Optionally, with continued reference to fig. 14, each multiplexing circuit 160 includes a first transistor 1601, a second transistor 1602, and a third transistor 1603; the input terminals of the first transistor 1601, the second transistor 1602, and the third transistor 1603 of each multiplexing circuit 160 are electrically connected, which is the input terminal 161 of the multiplexing circuit 160; the output terminals of the first transistor 1601, the second transistor 1602, and the third transistor 1603 of each multiplexing circuit 160 are the three output terminals 162 of the multiplexing circuit 160, respectively.
The control terminals of the transistors of the first transistor 1601, the second transistor 1602, and the third transistor 1603 are enabled in a time-sharing manner, so that the output terminal 162 corresponding to each transistor and the input terminal 161 thereof are gated in a time-sharing manner, and further, the data signal is gated in a shunt manner. Meanwhile, the formation process of the multiplexing circuit 160 may be integrated with the formation process of the scan driving circuit and the pixel driving circuit in the display panel, thereby ensuring that the manufacturing process of the display panel 10 is simple.
It should be noted that fig. 14 only exemplarily shows that the first transistor 1601, the second transistor 1602, and the third transistor 1603 in the multiplexing circuit 160 are all N-type transistors. In other embodiments, each transistor type in the multiplexing circuit 160 may also be a P-type transistor; or part of the N-type transistor is an N-type transistor, and part of the N-type transistor is a P-type transistor; or other types of switch control circuit components known to those skilled in the art, which are not described nor limited in this embodiment of the present invention.
On the basis of the foregoing embodiments, an embodiment of the present invention further provides a display device, where the display device includes any one of the display panels provided in the foregoing embodiments, so that the display device also has the technical effects of the display panel provided in the foregoing embodiments, which can be understood with reference to the foregoing description, and details are not repeated herein.
For example, referring to fig. 13, the display device 50 may be a mobile phone. In other embodiments, the display device 50 may also be a tablet computer, a smart wearable device, an in-vehicle display device, or other types of devices, components, or devices with display function and integrated display function known to those skilled in the art, which is not limited by the embodiments of the present invention.
Optionally, referring to fig. 14, the display device 50 further includes a driving chip 320, where the driving chip 320 includes a plurality of data signal interfaces 322; when each row of sub-pixels is charged, the polarities of the data voltages output by the plurality of data signal interfaces 322 are alternately arranged.
The polarity output cycle supported by the driving chip 320(IC interface) is "+, -, +", and the polarity cycle of the data signal entering the display panel is "+, -, +", and therefore, the connection line of the multi-path selection circuit 160 and the driving chip 320 needs to be jumped to meet the interface requirement of the driving chip 320, which is beneficial to using the existing driving chip 320 without additionally designing the driving chip 320, thereby being beneficial to avoiding the increase of the cost of the display panel 10 and ensuring low cost.
In other embodiments, the display device 50 may further include other structural components known to those skilled in the art, which are not described or limited in this embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A display panel, comprising: the pixel circuit comprises a plurality of pixel units, a plurality of data lines and a plurality of multi-path selection circuits, wherein the pixel units are arranged in an array; the plurality of pixel units comprise a plurality of first pixel units and a plurality of second pixel units;
the first pixel units and the second pixel units are arranged at intervals along the row direction; the first pixel units or the second pixel units are sequentially arranged along a column direction, wherein each column of sub-pixels is connected with the same data line;
the first pixel unit comprises 2 rows and 3 columns of sub-pixels; the second pixel unit comprises 2 rows and 3 columns of sub-pixels; the first row of pixel units of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged; the second row of pixel units of the first pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged; the first row of pixel units of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a fourth color sub-pixel which are sequentially arranged; the second row of pixel units of the second pixel unit comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel which are sequentially arranged;
in the row direction, every 6 columns of the pixel units are a pixel group, and the polarity of the data voltage applied to each sub-pixel of each pixel group is a polarity period; in each polarity period, the driving polarities of at least part of the same color sub-pixels in each row of sub-pixels are different;
each of the multiple selection circuits comprises an input end and three output ends, the input end receives data signals, the three output ends are connected to three different data lines, the multiple selection circuits gate the data signals of the same input end to the data lines and the corresponding sub-pixel columns which are connected with the three different output ends, and the input ends of two adjacent multiple selection circuits receive the data signals with opposite polarities;
the sub-pixels belonging to the odd-numbered row pixel units in the same column of sub-pixels are connected with the same data line; the sub-pixels belonging to the even-numbered pixel units in the same column of sub-pixels are connected with the same data line, and the sub-pixels belonging to the odd-numbered pixel units in the same column of sub-pixels are connected with the different data lines from the sub-pixels belonging to the even-numbered pixel units.
2. The display panel of claim 1, wherein the polarities of the data voltages of the sub-pixels in each of the pixel groups are + +, -, +, and + in sequence along the row direction.
3. The display panel according to claim 2, further comprising a plurality of data lines; each column of sub-pixels is connected with the same data line.
4. The display panel of claim 1, wherein in each pixel group, the polarity of the data voltage of each row of sub-pixels of the pixel unit of the odd-numbered row is +, -, +, and + in sequence along the row direction; in each pixel group, the polarities of the data voltages of the sub-pixels in each row of the pixel units in the even-numbered rows are-, +, and+, in sequence; or
In each pixel group, the polarities of the data voltages of the sub-pixels in each row of the pixel units in the odd-numbered rows are sequentially-, +, and+, along the row direction; in each pixel group, the polarities of the data voltages of the sub-pixels in each row of the pixel units in the even-numbered rows are +, -, +, and +, in turn.
5. The display panel according to claim 1, wherein the multiplexing circuit includes a plurality of selection circuit groups; each selection circuit group comprises a first multi-path selection circuit, a second multi-path selection circuit, a third multi-path selection circuit, a fourth multi-path selection circuit, a fifth multi-path selection circuit and a sixth multi-path selection circuit;
in the row direction, odd-numbered columns of data lines are electrically connected with a plurality of output ends of the first multi-path selection circuit, the third multi-path selection circuit and the fifth multi-path selection circuit in a one-to-one correspondence manner;
along the row direction, the even-numbered columns of data lines are electrically connected with the output ends of the second multi-path selection circuit, the fourth multi-path selection circuit and the sixth multi-path selection circuit in a one-to-one correspondence mode;
the connecting line between the input end of the third multi-path selection circuit and the data signal interface of the driving chip is crossed with the connecting line between the input end of the fourth multi-path selection circuit and the data signal interface of the driving chip;
and a connecting line between the input end of the fifth multi-path selection circuit and the data signal interface of the driving chip is crossed with a connecting line between the input end of the sixth multi-path selection circuit and the data signal interface of the driving chip.
6. The display panel according to claim 5, wherein each of the multiplexing circuits comprises a first transistor, a second transistor, and a third transistor;
the input ends of the first transistor, the second transistor and the third transistor of each of the multiple-way selection circuits are electrically connected and are input ends of the multiple-way selection circuits; the output ends of the first transistor, the second transistor and the third transistor of each of the multiple-way selection circuits are respectively three output ends of the multiple-way selection circuit.
7. The display panel of claim 1, wherein the first color sub-pixel is a red sub-pixel; the second color sub-pixel is a green sub-pixel; the third color sub-pixel is a blue sub-pixel; the fourth color sub-pixel is a white sub-pixel.
8. A display device characterized by comprising the display panel according to any one of claims 1 to 7.
9. The display device according to claim 8, further comprising a driver chip including a plurality of data signal interfaces;
when each row of sub-pixels is charged, the polarities of the data voltages output by the data signal interfaces are alternately arranged.
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| CN111025710B (en) * | 2019-12-25 | 2021-10-15 | 华为技术有限公司 | Display panel and display device |
| CN112562573A (en) * | 2020-12-30 | 2021-03-26 | 厦门天马微电子有限公司 | Display panel and display device |
| CN113889047B (en) * | 2021-05-25 | 2022-09-23 | 荣耀终端有限公司 | Driving method of liquid crystal display panel, display device and electronic equipment |
| CN113674669B (en) * | 2021-08-17 | 2023-06-27 | 武汉华星光电半导体显示技术有限公司 | Display panel |
| CN114743493B (en) * | 2022-04-02 | 2023-06-30 | 武汉天马微电子有限公司 | Display panel and display device |
| CN115206257B (en) * | 2022-07-15 | 2024-02-27 | 广州华星光电半导体显示技术有限公司 | Display panel and terminal equipment |
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