CN215578572U - Display substrate and display device - Google Patents

Abstract

The present disclosure provides a display substrate and a display device, the display substrate including: the multi-line sub-pixels comprise first sub-pixels, second sub-pixels and third sub-pixels which are circularly arranged, every two adjacent lines of sub-pixels are arranged in a staggered mode, in every two adjacent lines of sub-pixels, the first sub-pixels in one line of sub-pixels and the second sub-pixels and the third sub-pixels which are adjacent to the first sub-pixels in the other line of sub-pixels form a pixel, the white light brightness centers of the pixels located in the same pixel line are located on the same straight line, and the brightness centers of the first sub-pixels located in the same sub-pixel line are not located on the same straight line with the brightness centers of the second sub-pixels and the third sub-pixels.

Description

Display substrate and display device

Technical Field

The embodiment of the disclosure relates to the technical field of display, in particular to a display substrate and a display device.

Background

A pixel is the smallest independent unit of a display to represent an image, and a color display pixel needs to have three primary color sub-pixels of Red, Green and Blue (Red, Green, Blue, R, G and B) to independently represent various colors of a corresponding color space. A pixel consisting of 3 sub-pixels of red, green and blue is commonly referred to as a true red green blue (real RGB) pixel. Currently, mainstream color displays all use this real RGB pixel format, including color display pixel composition and corresponding image signals.

The pursuit of high quality displays and technological advances have led to ever increasing resolution of color displays. The high resolution increases the difficulty in manufacturing the display device, and particularly, for an Active Matrix Organic Light Emitting Diode (AMOLED) display currently applied to mobile display, due to the limitation of a mainstream patterning technology (Fine Metal Mask (FMM) technology) of a sub-pixel light emitting region of the AMOLED display, the manufacturing of the high PPI display is greatly restricted. Besides improving the process capability or adopting low-redundancy virtual pixels, under the real RGB pixel framework, adopting more reasonable RGB sub-pixel arrangement is also a reasonable coping method.

Delta RGB pixel arrangement is one way to improve PPI of the display, and is characterized in that three primary color sub-pixels (brightness center positions) form three vertexes of an equilateral angle shape, and the three vertexes are horizontally translated by one pixel pitch after being turned up and down to form adjacent pixels. The two laterally adjacent pixels of different configurations constitute a minimal repeating unit, and the entire display area is formed by up, down, left, and right translational replication.

Delta RGB arrangement pixels are beneficial to the uniform distribution density of sub-pixels of each primary color, and the process has good direction balance when a sub-Pixel light-emitting area is formed, so that higher sub-Pixel aperture ratio and physical distribution ratio can be realized under the same process precision (such as the width of a Pixel Definition Layer (PDL)). Meanwhile, the Delta RGB arrangement also has relatively excellent pattern and color expression quality. However, under the condition of insufficient resolution, the cross lines displayed by the delta RGB pixels have certain wavy feeling, so that the delta RGB pixels are not suitable for office applications with a large number of fine line patterns, including Chinese characters with a large number of straight line pattern components, and the application of the delta RGB pixels is greatly restricted.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a display substrate and a display device, which are used for solving the problem that cross lines displayed by delta RGB arranged pixels have wavy feeling.

In order to solve the technical problem, the present disclosure is implemented as follows:

in a first aspect, an embodiment of the present disclosure provides a display substrate, which includes multiple rows of sub-pixels, where each row of sub-pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel that are circularly arranged, two adjacent rows of sub-pixels are arranged in a staggered manner, in each two adjacent rows of sub-pixels, the first sub-pixel in one row of sub-pixels and the second sub-pixel and the third sub-pixel adjacent thereto in another row of sub-pixels form a pixel, white luminance centers of the pixels located in the same pixel row are located on the same straight line, and a luminance center of the first sub-pixel located in the same sub-pixel row is not located on the same straight line as luminance centers of the second sub-pixel and the third sub-pixel.

Optionally, the luminance centers of the first sub-pixels located in the same sub-pixel row are on the same straight line.

Optionally, the luminance center of the second sub-pixel and the luminance center of the third sub-pixel in the same sub-pixel row are on the same straight line.

Optionally, the white light brightness centers of the pixels in the same pixel column are located on the same straight line.

Optionally, the arrangement manner of the sub-pixels of each pixel in the same pixel column is the same.

Optionally, the sub-pixels in the same sub-pixel column are sub-pixels of the same color.

Optionally, a connection line between the brightness center of the first sub-pixel, the brightness center of the second sub-pixel, and the brightness center of the third sub-pixel forms an isosceles triangle or an equilateral triangle.

Optionally, the first sub-pixel is a green sub-pixel, one of the second sub-pixel and the third sub-pixel is a red sub-pixel, and the other is a blue sub-pixel.

Optionally, the display substrate is an OLED display substrate, the area of the red sub-pixel is S1, the area of the green sub-pixel is S2, and the area of the blue sub-pixel is S3, where S1< S2< S3.

Optionally, the display substrate is an LCD display substrate, and the area of the red sub-pixel, the area of the green sub-pixel and the area of the blue sub-pixel are equal.

Optionally, the first sub-pixel, the second sub-pixel, and the third sub-pixel have shapes of: rectangular, hexagonal or diamond shaped.

Optionally, adjacent edges of two adjacent sub-pixels with different colors are parallel to each other.

Optionally, the mutually parallel adjacent edges of two adjacent sub-pixels with different colors are perpendicular to the connecting line of the brightness centers of the two sub-pixels with different colors.

Optionally, the second sub-pixel and the third sub-pixel have the same shape, and the first sub-pixel has a shape different from the second sub-pixel and the third sub-pixel.

Optionally, the sub-pixels have the same pitch as the other surrounding sub-pixels.

In a second aspect, an embodiment of the present disclosure provides a display device, including the display substrate described in the first aspect.

In the embodiment of the disclosure, the white light brightness centers of the pixels in the same pixel row are located on the same straight line, so that the problem that the transverse lines displayed by the pixels have wavy up and down can be solved, and the display effect is improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the disclosure. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram of a structure of a Delta RGB arrangement pixel in the related art;

fig. 2 is a schematic structural diagram of a display substrate according to an embodiment of the disclosure;

fig. 3 is a schematic structural diagram of a display substrate according to an embodiment of the disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The reason why the Delta RGB pixel display shows the wavy feeling of the transverse lines is shown in FIG. 1. When the resolution is insufficient, the human eye perceives the pixel as not a "dot" but a "region" of uneven brightness. When a pixel represents a white balance pixel point, the luminance of the G sub-pixel is about 65%, the luminance of the R sub-pixel is about 30%, and the shape of the pixel 'region' is slightly affected by the B sub-pixel due to low luminance effect. The human eye perceives the center of white light luminance for the "region" of the pixel as being approximately at about 1/3 near the end G of the line connecting the centers of luminance for the R-G of the subpixel arrangement. Since the two configurations of the laterally adjacent pixels are turned upside down, the white light luminance centers M1 of the adjacent pixels are different in the up-down position, and thus the lateral lines displayed by these pixels may be perceived as wavy up and down when the resolution is insufficient.

It should be noted that, in the embodiments of the present disclosure, several concepts are related to a pixel row, a sub-pixel row, a pixel column, and a sub-pixel column, where the pixel row and the pixel column are rows and columns in units of pixels, and the sub-pixel row and the sub-pixel column are rows and columns in units of sub-pixels, which are different from each other, and two rows of sub-pixels may be included in a pixel row, and three columns of sub-pixels may be included in a pixel column.

In addition, it should be further noted that the luminance center of the sub-pixel related in the embodiment of the present disclosure may be a position stable point of the light spot obtained by scanning the sub-pixel by the light sensor to obtain a spatial light intensity distribution of the light spot emitted by the sub-pixel, and analyzing and processing the spatial light intensity distribution of the light spot of the sub-pixel. Similarly, the white light brightness center of the pixel refers to a position stable point of the light spot obtained by mixing three sub-pixels to generate white light, scanning the pixel through the optical sensor to obtain the spatial light intensity distribution of the light spot emitted by the pixel, and analyzing and processing the spatial light intensity distribution of the light spot of the pixel.

To solve the above problem, referring to fig. 2, an embodiment of the present disclosure provides a display substrate including a plurality of rows of sub-pixels (R1, R2, R3, and R4 in fig. 2 indicate row numbers of the sub-pixels), each row of sub-pixels includes a first sub-pixel G, a second sub-pixel R, and a third sub-pixel B, which are circularly arranged, in the embodiment of the present disclosure, the sub-pixels of the same sub-pixel row are circularly arranged according to G, R, B or R, B, G, but in other embodiments of the present disclosure, the present disclosure is not limited thereto, and the sub-pixels may be circularly arranged according to G, B, R or B, R, G. In the embodiment of the present disclosure, two adjacent rows of sub-pixels are arranged in a staggered manner, for example, one sub-pixel or a half sub-pixel may be staggered, in each two adjacent rows of sub-pixels, the first sub-pixel G in one row of sub-pixels and the second sub-pixel R and the third sub-pixel B adjacent thereto in the other row of sub-pixels form a pixel, the white luminance centers M2 of the pixels in the same pixel row are located on the same straight line, and the luminance centers of the first sub-pixel G and the luminance centers of the second sub-pixel R and the third sub-pixel B in the same sub-pixel row are not located on the same straight line.

In the embodiment of the present disclosure, the white light luminance centers M2 of the pixels in the same pixel row are located on the same straight line, so that the problem of wavy up and down of the horizontal lines displayed by the pixels can be solved, and the display effect is improved.

In the embodiment of the present disclosure, optionally, referring to fig. 3, the luminance centers of the first sub-pixels G in the same sub-pixel row are on the same straight line, and this structure is favorable for uniform distribution of the sub-pixels.

In the embodiment of the present disclosure, optionally, referring to fig. 3, the luminance center of the second sub-pixel R and the luminance center of the third sub-pixel G in the same sub-pixel row are on the same straight line, and this structure is favorable for uniform distribution of the sub-pixels.

In the embodiment of the present disclosure, referring to fig. 2 and fig. 3, optionally, the white light luminance centers of the pixels in the same pixel column are located on the same straight line, and this structure can improve the problem that the vertical lines displayed by the pixels have wavy feeling of fluctuation from side to side, thereby improving the display effect.

In the embodiment of the present disclosure, referring to fig. 2, optionally, the sub-pixels in the same sub-pixel column are sub-pixels with the same color (in fig. 2, C1, C2, and C3 … … are column numbers of the sub-pixels), and this structure is favorable for uniform distribution of the sub-pixels.

In the embodiment of the present disclosure, referring to fig. 2, optionally, the luminance centers of the sub-pixels in the same sub-pixel column are located on the same straight line, and this structure is favorable for uniform distribution of the sub-pixels.

In the embodiment of the present disclosure, optionally, referring to fig. 2, the arrangement of the sub-pixels of each pixel in the same pixel column is the same, for example, in the first column of pixels, each sub-pixel is that the first sub-pixel G is in the first row, the second sub-pixel R and the third sub-pixel B are in the second row, and in the second column of pixels, each sub-pixel is that the first sub-pixel G is in the second row, and the second sub-pixel R and the third sub-pixel B are in the first row.

In the embodiment of the disclosure, as can be seen from fig. 2, in the same pixel row, the arrangement manners of the sub-pixels of two adjacent pixels are different, the arrangement structures of the sub-pixels of the adjacent pixels are turned over up and down, and in order to make the white light luminance centers M2 of the pixels located in the same pixel row be located on the same straight line, compared with the existing structure, one of the pixels of two adjacent pixels can be moved upward integrally, so that the white light luminance center of the pixel is also moved upward correspondingly, and the white light luminance centers M2 of the pixels located in the same pixel row are ensured to be located on the same straight line.

In the embodiment of the present disclosure, referring to fig. 2, a connection line between the luminance center of the first sub-pixel G, the luminance center of the second sub-pixel R, and the luminance center of the third sub-pixel G forms an equilateral triangle.

In order to adapt to the aspect ratio of the square pixel set by the current mainstream digital display data format, a triangle formed by connecting the brightness center of the first sub-pixel G, the brightness center of the second sub-pixel R and the brightness center of the third sub-pixel G may also be an isosceles triangle.

In the above embodiments, the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a blue sub-pixel. Furthermore, in some embodiments, the possibility that the first sub-pixel is a red sub-pixel or a blue sub-pixel is not excluded.

In the embodiment of the present disclosure, the display substrate is an OLED display substrate, the area of the red sub-pixel is S1, the area of the green sub-pixel is S2, and the area of the blue sub-pixel is S3, where S1< S2< S3, and this structure is favorable for improving the display effect. For example, the ratios of S1, S2, and S3 may be: 1: 1.3: 1.7, although the ratio is not limited thereto.

In the embodiment of the present disclosure, the display substrate is an LCD display substrate, and the area of the red sub-pixel, the area of the green sub-pixel and the area of the blue sub-pixel are equal, which is beneficial to improving the display effect.

In this embodiment of the present disclosure, optionally, the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are: rectangular, hexagonal or diamond shaped. In the embodiments shown in fig. 2 and 3, the first sub-pixel, the second sub-pixel, and the third sub-pixel are hexagonal, and the hexagonal shape is more favorable for improving the aperture ratio of the pixel.

In this embodiment of the disclosure, optionally, referring to fig. 2 and 3, the second sub-pixel R and the third sub-pixel B have the same shape, and the first sub-pixel G has a shape different from the second sub-pixel R and the third sub-pixel B, and as can be seen from fig. 2 and 3, although the first sub-pixel G, the second sub-pixel R and the third sub-pixel B are all hexagons, the hexagons of the first sub-pixel G have a shape different from the hexagons of the second sub-pixel R and the third sub-pixel B. Of course, in some other embodiments of the present disclosure, the shape of the first sub-pixel G may be the same as the shape of the second sub-pixel R and the third sub-pixel B.

In the embodiment of the present disclosure, optionally, referring to fig. 2, adjacent edges of two adjacent sub-pixels with different colors are parallel to each other. That is, the side of the first sub-pixel G close to the second sub-pixel R is parallel to the side of the second sub-pixel R close to the first sub-pixel G, the side of the first sub-pixel G close to the third sub-pixel B is parallel to the side of the third sub-pixel B close to the first sub-pixel G, and the side of the second sub-pixel R close to the third sub-pixel B is parallel to the side of the third sub-pixel B close to the second sub-pixel R.

Further optionally, the parallel adjacent edges of the two adjacent sub-pixels with different colors are perpendicular to the connecting line of the brightness centers of the two sub-pixels with different colors, so that the use area of the sub-pixels can be effectively increased, and the aperture opening ratio of the sub-pixels can be increased.

In the embodiment of the present disclosure, optionally, referring to fig. 2, the distances between each of the sub-pixels and other surrounding sub-pixels are the same, and are all L as shown in fig. 2, which may be beneficial to the uniformity of the sub-pixel distribution.

The embodiment of the present disclosure further provides a display device, including the display substrate in any of the above embodiments.

While the present disclosure has been described with reference to the embodiments illustrated in the drawings, which are intended to be illustrative rather than restrictive, it will be apparent to those of ordinary skill in the art in light of the present disclosure that many more modifications may be made without departing from the spirit of the disclosure and the scope of the appended claims.

Claims (16)

1. The display substrate is characterized by comprising a plurality of rows of sub-pixels, wherein each row of sub-pixels comprises a first sub-pixel, a second sub-pixel and a third sub-pixel which are circularly arranged, two adjacent rows of sub-pixels are arranged in a staggered manner, in each two adjacent rows of sub-pixels, the first sub-pixel in one row of sub-pixels and the second sub-pixel and the third sub-pixel which are adjacent to the first sub-pixel in the other row of sub-pixels form a pixel, the white light brightness centers of the pixels positioned in the same pixel row are positioned on the same straight line, and the brightness center of the first sub-pixel positioned in the same sub-pixel row is not positioned on the same straight line with the brightness centers of the second sub-pixel and the third sub-pixel.

2. The display substrate of claim 1, wherein the luminance centers of the first sub-pixels located in the same sub-pixel row are on the same line.

3. The display substrate according to claim 1, wherein a luminance center of the second sub-pixel and a luminance center of the third sub-pixel located in the same sub-pixel row are on the same line.

4. The display substrate of claim 1, wherein the white light luminance centers of the pixels in the same pixel column are located on the same straight line.

5. The display substrate according to claim 4, wherein the arrangement of the sub-pixels of the pixels in the same pixel column is the same.

6. The display substrate of claim 1, wherein the sub-pixels in the same sub-pixel column are sub-pixels of the same color.

7. The display substrate according to claim 1, wherein a line connecting the luminance center of the first subpixel, the luminance center of the second subpixel, and the luminance center of the third subpixel forms an isosceles triangle or an equilateral triangle.

8. The display substrate of claim 1, wherein the first sub-pixel is a green sub-pixel, one of the second sub-pixel and the third sub-pixel is a red sub-pixel, and the other is a blue sub-pixel.

9. The display substrate of claim 8, wherein the display substrate is an OLED display substrate, the red sub-pixel has an area of S1, the green sub-pixel has an area of S2, and the blue sub-pixel has an area of S3, wherein S1< S2< S3.

10. The display substrate of claim 8, wherein the display substrate is an LCD display substrate, and wherein an area of the red sub-pixel, an area of the green sub-pixel, and an area of the blue sub-pixel are equal.

11. The display substrate of claim 1, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel have shapes of: rectangular, hexagonal or diamond shaped.

12. The display substrate of claim 11, wherein adjacent edges of two different color sub-pixels are parallel to each other.

13. The display substrate according to claim 12, wherein adjacent parallel adjacent edges of two different color sub-pixels are perpendicular to a line connecting luminance centers of the two different color sub-pixels.

14. The display substrate of claim 1, wherein the second sub-pixel and the third sub-pixel have the same shape, and wherein the first sub-pixel has a shape different from the second sub-pixel and the third sub-pixel.

15. The display substrate of claim 1, wherein each of the sub-pixels has the same pitch as the other surrounding sub-pixels.

16. A display device comprising the display substrate according to any one of claims 1 to 15.

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