CN106597772B - A display substrate and a display device - Google Patents

Abstract

The invention relates to the field of display technology, and discloses a display substrate and a display device. By setting the display area of the display substrate to be composed of a plurality of identical pixel repeating units, and each pixel repeating unit includes an integer number of columns of sub-pixel areas, the double gate The structure saves half of the data lines, which leads to brightness differences between pixel areas, which affects the display quality. It ensures that the brightness distribution of all pixel repeating units is consistent, reduces the brightness difference between pixel repeating units, and improves display quality. Moreover, there is no need to sacrifice the aperture ratio, and the contradiction between the aperture ratio of the double gate structure and the difference in pixel brightness distribution is resolved.

Description

A display substrate and a display device

technical field

The present invention relates to the field of display technology, in particular to a display substrate and a display device.

Background technique

In the field of flat panel display technology, Thin Film Transistor Liquid Crystal Display (TFT-LCD) has the advantages of small size, low power consumption, and relatively low manufacturing cost, and gradually occupies a dominant position in today's flat panel display market. The main structure of TFT-LCD is the array substrate and the color filter substrate of the box. The array substrate includes a plurality of gate lines and a plurality of data lines intersecting to define a plurality of sub-pixel regions, and each pixel region is composed of a plurality of adjacent sub-pixel regions. Each sub-pixel area includes a pixel electrode and a thin film transistor. The gate electrode of the thin film transistor is electrically connected to the gate line, the source electrode is electrically connected to the data line, and the drain electrode is electrically connected to the pixel electrode. The thin film transistor is turned on through the gate line, and the data The pixel voltage transmitted on the line is transmitted to the pixel electrode through the thin film transistor. On the color filter substrate, a black matrix is arranged corresponding to an area between two adjacent sub-pixel areas to prevent color crosstalk from occurring in adjacent sub-pixel areas.

In the prior art, in order to reduce production costs, a TFT-LCD with a double gate structure is proposed. The specific structure of the array substrate is: there are two gate lines between two adjacent rows of sub-pixel regions, and two adjacent data lines There are two columns of sub-pixel regions in between, although the number of gate lines is doubled, but the number of data lines is halved, reducing the number of corresponding driver chips and reducing production costs. Since some data lines are provided between two adjacent sub-pixel regions, while the other part is not provided between two adjacent sub-pixel regions, the black matrix on the color filter substrate has two widths, AA' and BB', called is the BM difference, expressed as (AA'-BB')/2dot (dot is the width of a sub-pixel area). BM difference is an important parameter of the design. If the black matrix with a width of AA' corresponds to the position of the data line, its width is designed according to the width of the data line, while the black matrix with a width of BB' does not correspond to the position of the data line. If the BB' design is small and the BM difference is too large, the area of the sub-pixel area increases, which improves the aperture ratio, but it will lead to an increase in the brightness difference between the pixel areas, causing the difference in brightness and darkness displayed by the pixel at low gray levels. This is called For dim mura. The current solution is to increase BB' (reduce the difference of BM), but it will sacrifice the area of the sub-pixel area, which is not conducive to improving the aperture ratio.

Contents of the invention

The invention provides a display substrate and a display device, which are used to solve the contradiction between the aperture ratio of the double-gate structure and the difference in pixel brightness distribution.

In order to solve the above technical problems, an embodiment of the present invention provides a display substrate, including a plurality of parallel arranged gate lines and a plurality of parallel arranged data lines, the gate lines extend along the row direction, and the gate lines and data lines Cross distribution, defining a plurality of sub-pixel areas; there are two gate lines between two adjacent rows of sub-pixel areas; for the same row of sub-pixel areas, there are two sub-pixel areas between two adjacent data lines; the display substrate includes Multiple pixel regions, where,

The display substrate includes a plurality of pixel repeating units, the number of pixel regions in all pixel repeating units is the same, and the sub-pixel regions are arranged in the same way, and each pixel region is composed of three adjacent sub-pixels in two adjacent rows Regional composition;

Each pixel repeating unit includes 2n rows*3m columns of sub-pixel areas, wherein the same column of sub-pixel areas is distributed on the same line parallel to the data line, and for each pixel repeating unit, each row of sub-pixel areas includes 3m columns of sub-pixels , each column of sub-pixel areas includes 2n rows of sub-pixel areas, n and m are positive integers, and both n and m are not less than 2.

An embodiment of the present invention also provides a display device, which includes the above-mentioned display substrate.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above technical solution, by setting the display area of the display substrate to be composed of a plurality of identical pixel repeating units, and each pixel repeating unit includes an integer number of columns of sub-pixel areas, it overcomes the double-gate structure that saves half of the data lines and causes the gap between the pixel areas The difference in luminance affects the display quality, ensuring that the luminance distribution of all pixel repeating units is consistent, reducing the brightness difference between pixel repeating units, and improving the display quality. Moreover, there is no need to sacrifice the aperture ratio, and the contradiction between the aperture ratio of the double-gate structure and the difference in pixel brightness distribution is resolved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 shows the first schematic diagram of the pixel distribution of the pixel repeating unit in the embodiment of the present invention;

FIG. 2 shows a schematic diagram of pixel distribution of a display substrate using the pixel repeating unit in FIG. 1;

Fig. 3 shows the second schematic diagram of the pixel distribution of the pixel repeating unit in the embodiment of the present invention;

FIG. 4 is a schematic diagram showing pixel distribution of a display substrate using the pixel repeating unit in FIG. 3 .

Detailed ways

The present invention provides a display substrate, specifically a display substrate with a double-gate structure, which is used to solve the problem that the double-gate structure saves half of the data lines, resulting in differences in brightness between pixel regions and affecting display quality.

In order to solve the above technical problems, the present invention sets the display substrate to include a plurality of pixel repeating units, the number of pixel regions in all pixel repeating units is the same, and the sub-pixel regions are arranged in the same way, and each pixel region is composed of two adjacent The row consists of three adjacent sub-pixel regions. Each pixel repeating unit includes 2n rows*3m columns of sub-pixel areas. Since the pixel repeating unit includes an integer number of columns of sub-pixel areas, it overcomes the impact of saving half of the data lines on the brightness of the pixel repeating unit, ensuring that the brightness distribution of all pixel repeating units is consistent. , to overcome the problem of light and dark differences and improve the display quality.

It should be noted that the luminance distribution of the pixel repeating unit refers to the luminance distribution of all pixel regions of the pixel repeating unit. Omitting half of the data lines in the double gate structure will cause the pixel area of the display substrate to have the first luminance and the second luminance, and the pixel area with the first luminance and the pixel area with the second luminance in each pixel repeating unit are distributed according to certain rules , the distribution rules of the pixel area with the first brightness and the pixel area with the second brightness in all pixel repeating units are the same.

The specific implementation manner of the present invention will be further described in detail below with reference to the drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

FIG. 1 shows a schematic diagram of pixel distribution of a pixel repeating unit in an embodiment of the present invention, and FIG. 2 shows a schematic diagram of pixel distribution of a display substrate using the pixel repeating unit in FIG. 1 .

FIG. 3 shows a schematic diagram of pixel distribution of another pixel repeating unit in an embodiment of the present invention, and FIG. 4 shows a schematic diagram of pixel distribution of a display substrate using the pixel repeating unit in FIG. 3 .

As shown in FIGS. 1-4 , an embodiment of the present invention provides a display substrate, including a plurality of pixel regions 100 . The display substrate includes a plurality of gate lines 10 arranged in parallel and a plurality of data lines 20 arranged in parallel. The gate lines 10 extend along the row direction, and the gate lines 10 and the data lines 20 are arranged in crossings to define a plurality of sub-pixel regions. Each pixel The area 100 is composed of three adjacent sub-pixel areas in two adjacent rows. For example, each pixel area 100 is composed of sub-pixel area R, sub-pixel area G, and sub-pixel area B located in two adjacent rows, and color display is realized by combining three primary colors of R, G, and B.

The display substrate adopts a double-gate structure: as shown in FIG. 1 and FIG. 3 , there are two gate lines 10 between two adjacent rows of sub-pixel regions. For the same row of sub-pixel regions, there are two sub-pixel regions between two adjacent data lines 20 . Since the number of data lines 20 of the double-gate structure is halved, the number of corresponding driving chips is halved, which can reduce costs.

In order to overcome the problem of brightness difference between pixel regions caused by the double gate structure, the display substrate is set to include a plurality of pixel repeating units 200, the number of pixel regions 100 in all pixel repeating units 200 is the same, and the arrangement of the sub-pixel regions is cloth in the same way. When each pixel region 100 is composed of two adjacent rows of sub-pixel regions R, sub-pixel regions G, and sub-pixel regions B, specifically, the sub-pixel regions R, sub-pixel regions G, and sub-pixel regions in all pixel repeating units 200 B is arranged in the same way.

Wherein, each pixel repeating unit 200 includes 2n rows*3m columns of sub-pixel regions, the sub-pixel regions of the same column are distributed on the same line parallel to the data line 20, and for each pixel repeating unit 200, each row of sub-pixel regions includes 3m columns of sub-pixels, each column of sub-pixel areas includes 2n rows of sub-pixel areas, n and m are positive integers, and both n and m are not less than 2.

In the above technical solution, the display area of the display substrate is composed of multiple identical pixel repeating units, and each pixel repeating unit includes an integer number of columns of sub-pixel areas, which overcomes the difference in brightness between pixel areas caused by the double-gate structure saving half of the data lines , the problem that affects the display quality, ensures that the brightness distribution of all pixel repeating units is consistent, reduces the brightness difference between pixel repeating units, and improves the display quality. Moreover, there is no need to sacrifice the aperture ratio, and the contradiction between the aperture ratio of the double-gate structure and the difference in pixel brightness distribution is resolved.

In order to realize that the pixel repeating unit 200 includes an integer number of columns of sub-pixel regions, all sub-pixel regions of the pixel repeating unit 200 may be located between two data lines 20 , as shown in FIG. 3 and FIG. 4 . It can also be set that for a pixel repeating unit 200, all corresponding data lines 20 are located between two adjacent columns of sub-pixel regions, as shown in FIG. 1 and FIG. 2 . Wherein, the data line 20 corresponding to the pixel repeating unit 200 means that a part of the data line 20 is located in the area where the pixel repeating unit 200 is located.

It should be noted that, in the embodiment of the present invention, the same row of sub-pixel regions refers to being distributed on the same line parallel to the gate line 10, and the same column of sub-pixel regions is distributed on the same line parallel to the data line 20, and the gate line 10 The sum and data lines 20 may be straight lines, broken lines or curves, etc., which are not limited herein.

In this embodiment, the data line 20 has a zigzag structure, and the data line 20 includes a first part located in the area where a pixel repeating unit 200 is located, and the first part includes at least two sub-line segments. For each pixel repeating unit 200, in the extending direction of the gate line 10, there are at least two rows of sub-pixel regions between two adjacent sub-line segments, and the sub-pixel areas between two adjacent sub-line segments can be set according to display requirements. The number of rows in the region.

In the above technical solution, the omission of half of the data lines due to the double gate structure will cause the pixel area of the display substrate to have the first luminance and the second luminance, and in each row of pixel areas, the pixel area with the first luminance and the second luminance The pixel area interval distribution of . While the sub-pixel areas of the same column are distributed on the same line parallel to the data line 20, the data line 20 of the broken line structure makes the sub-pixel areas of two adjacent rows staggered in the row direction, improving the brightness distribution difference of each row of pixel areas, Therefore, the uniformity of brightness distribution of each pixel repeating unit 200 is improved, and the display quality is further improved. Specifically, one row of sub-pixel regions is set corresponding to the region between two adjacent sub-pixel regions of another row, and then three sub-pixel regions of two adjacent rows are arranged in a V shape to form a pixel region 100 .

In this embodiment, all sub-pixel regions of each pixel repeating unit 200 form multiple pixel regions 100, and each pixel repeating unit 200 can further be set to include multiple rows of pixel regions, and two adjacent rows of sub-pixel regions form multiple pixel regions 100, as shown in Figures 1 and 3.

In a specific implementation manner, as shown in FIGS. 1-4 , each pixel repeating unit 200 includes 6 rows*6 columns of sub-pixel regions. The data line 20 is a zigzag structure, and the first part located in the region where the pixel repeating unit 200 is located includes a first sub-line segment extending along a first direction and a second sub-line segment extending along a second direction, and the first sub-line segment and the second sub-line segment extend along a second direction. The angle between the line segments is greater than zero.

Further, for the pixel repeating unit 200, it is set that there are 3 rows of sub-pixel regions between two adjacent first sub-line segments, and there are also 3 rows of sub-pixel regions between two adjacent second sub-line segments.

In this specific embodiment, when the BM difference is 5.9%, the brightness difference between the pixel repeating units 200 can be reduced to 0.8%. As long as the luminance difference between the pixel repeating units 200 is less than 1%, there will be no problem of light and dark differences displayed by pixels at low gray levels.

In another specific implementation manner, each pixel repeating unit includes 4 rows*6 columns of sub-pixel regions. The gate line is also a broken line structure, and the first part located in the area where the pixel repeating unit is located includes a first sub-line segment extending along the first direction and a second sub-line segment extending along the second direction, the first sub-line segment and the second sub-line segment The angle between them is greater than zero.

Further, for the pixel repeating unit, it is set that there are 2 rows of sub-pixel regions between two adjacent first sub-line segments, and there are also 2 rows of sub-pixel regions between two adjacent second sub-line segments.

Of course, the number of rows and columns of the sub-pixel area of each pixel repeating unit can be set according to the actual application process, as long as the purpose of the present invention can be achieved. The shape of the data line is not limited to the structures in the above specific embodiments.

It is easy to understand that, for a display substrate, the number of pixel regions is fixed. The larger the number of pixel repeating units, the finer the division of the display area is, which is beneficial to improve the uniformity of brightness distribution. However, for each pixel repeating unit, the more the number of pixel regions is, the more favorable it is to improve the brightness distribution uniformity of a pixel repeating unit. Specifically, the number of pixel repeating units can be set according to the requirement of brightness distribution.

Based on the concept of the present invention, those skilled in the art can reasonably adjust the technical solution of the present invention according to the number of sub-pixel regions included in each pixel region without creative work. For example: when each pixel area is composed of four adjacent sub-pixel areas located in two adjacent rows, the pixel repeating unit can be set to include 2n rows*4m columns of sub-pixel areas, which will not be described in detail here.

An embodiment of the present invention also provides a display device, the display device includes the above-mentioned display substrate, since the luminance distribution of different pixel repeating units is consistent, the brightness difference between the pixel repeating units is reduced, thereby improving the display The display quality of the device.

The display device may be a liquid crystal display device, an organic electroluminescence display device or other display devices.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and replacements can also be made, these improvements and replacements It should also be regarded as the protection scope of the present invention.

Claims (10)

1. a kind of display base plate, including a plurality of grid line disposed in parallel and a plurality of data line disposed in parallel, the grid line is along row Direction extends, and the grid line and data line cross-distribution limit multiple subpixel areas；Have between adjacent rows subpixel area There are two grid lines；For same a line subpixel area, there is two sub-pixels region between adjacent two datas line；The display Substrate includes multiple pixel regions, which is characterized in that

The display base plate includes multiple pixel repetitive units, and the number of pixel region is identical in all pixels repetitive unit, and The arrangement mode of subpixel area is identical, and each pixel region is made of three adjacent subpixel areas of adjacent rows；

Each pixel repetitive unit includes 2n row * 3m column subpixel area, wherein same row subpixel area is distributed in and data On the parallel the same line of line, and for each pixel repetitive unit, every a line subpixel area includes 3m column sub-pixel, often One column subpixel area includes 2n row subpixel area, and n, m are positive integer, and n and m are not less than 2.

2. display base plate according to claim 1, which is characterized in that the data line is meander line structure, the data line First part including being located at a pixel repetitive unit region, the first part include at least two strip line segments；

For each pixel repetitive unit, on the extending direction of grid line, there are at least two rows between two adjacent strip line segments Subpixel area.

3. display base plate according to claim 2, which is characterized in that each pixel repetitive unit includes that 6 row * 6 arrange sub- picture Plain region.

4. display base plate according to claim 3, which is characterized in that the first part includes extending in a first direction First sub-line section and the second sub-line section extended in a second direction, the angle between the first sub-line section and the second sub-line section are big In zero；

For the pixel repetitive unit, between two adjacent the first sub-line sections have 3 row subpixel areas, adjacent two Also there are 3 row subpixel areas between second sub-line section.

5. display base plate according to claim 2, which is characterized in that each pixel repetitive unit includes that 4 row * 6 arrange sub- picture Plain region.

6. display base plate according to claim 5, which is characterized in that the first part includes extending in a first direction First sub-line section and the second sub-line section extended in a second direction, the angle between the first sub-line section and the second sub-line section are big In zero；

For the pixel repetitive unit, between two adjacent the first sub-line sections have 2 row subpixel areas, adjacent two Also there are 2 row subpixel areas between second sub-line section.

7. display base plate according to claim 1, which is characterized in that all subpixel areas of the pixel repetitive unit It is respectively positioned between two data lines.

8. display base plate according to claim 1, which is characterized in that for a pixel repetitive unit, corresponding all numbers It is respectively positioned between adjacent two column subpixel area according to line.

9. a kind of display device, which is characterized in that the display device includes the described in any item display bases of claim 1-8 Plate.

10. display device according to claim 9, which is characterized in that the display device is liquid crystal display device or has Organic electro luminescent display device.