WO2020238432A1

WO2020238432A1 - Display substrate, display substrate preparation method, and display panel

Info

Publication number: WO2020238432A1
Application number: PCT/CN2020/084076
Authority: WO
Inventors: 黄耀; 周洋; 张跳梅
Original assignee: 京东方科技集团股份有限公司; 成都京东方光电科技有限公司
Priority date: 2019-05-31
Filing date: 2020-04-10
Publication date: 2020-12-03
Also published as: CN110164382A; CN110164382B

Abstract

A display substrate, a display substrate preparation method, and a display panel. The display substrate comprises a first area (10), and a second area (20) located at one or more sides of the first area (10). The first area (10) comprises a plurality of first pixel units (12) arranged in an array, and the plurality of first pixel units (12) form a display that has a first resolution; the second area (20) comprises a plurality of scan driving circuits and a plurality of second pixel units (22), and the plurality of second pixel units (22) form a display that has a second resolution; and the first resolution is greater than the second resolution.

Description

Display substrate, display substrate preparation method and display panel

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910469291.1 filed with CNIPA on May 31, 2019, entitled "A display substrate, a method for preparing a display substrate, and a display panel", the full text of which is incorporated herein by reference for all purposes .

Technical field

The embodiments of the present disclosure relate to a display substrate, a method for manufacturing the display substrate, and a display panel.

Background technique

The Organic Light-Emitting Diode (OLED) design distributes the array substrate row driver (Gate Driver On Array, GOA) circuit at both ends of the display panel (Panel) for row-by-row drive, as shown in Figure 1. The middle AA area is the effective display area, and both sides of the AA area are the non-luminous border areas where the GOA circuit is placed. Since the GOA unit of the OLED is complex and occupies a large space, the area where the left and right borders do not emit light is relatively large, and a full-screen design cannot be realized.

Summary of the invention

Embodiments of the present disclosure provide a display substrate and a display panel.

At least one embodiment of the present disclosure provides a display substrate including: a first area and a second area located on one or more sides of the first area, wherein: the first area includes a plurality of second areas arranged in an array A pixel unit, the plurality of first pixel units form a display with a first resolution; the second area includes a plurality of scan driving circuits and a plurality of second pixel units, the plurality of second pixel units are formed with Display at a second resolution; and the first resolution is greater than the second resolution.

For example, the light-emitting structure layer of the sub-pixel in the second pixel unit is disposed on the upper layer of the pixel driving circuit of the sub-pixel in the second pixel unit; or the light-emitting structure layer of the sub-pixel in the second pixel unit is disposed on the upper layer of the pixel driving circuit. The scan driving circuit and the upper layer of the pixel driving circuit of sub-pixels in the second pixel unit.

For example, the size of the sub-pixel in the second pixel unit is n times the size of the sub-pixel in the first pixel unit, and n is a positive integer greater than 1.

For example, the interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the second area is greater than the interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the first area, and a group of sub-pixels forms one Pixel unit; or, the interval between two adjacent sub-pixels having the same color light-emitting structure layer in the second area is greater than that between two adjacent sub-pixels having the color light-emitting structure layer in the first area The interval between.

For example, the second area includes a plurality of first column areas and second column areas sequentially arranged, the scan driving circuit is arranged in the first column area, and the pixel drive of the sub-pixels in the second pixel unit The circuit is arranged in the second column area.

For example, the second area includes a plurality of first block areas and a plurality of second block areas, the plurality of first block areas and the plurality of second block areas are arranged at intervals, and the scan driving circuit is arranged in all In the plurality of first block areas, the pixel driving circuits of sub-pixels in the second pixel unit are arranged in the plurality of second block areas.

For example, the second pixel unit adopts an RGB arrangement, or a Pentile arrangement, or an RGB Delta arrangement.

For example, each second pixel unit includes two green sub-pixels, one red sub-pixel and one blue sub-pixel. The area of the red sub-pixel is twice the area of the green sub-pixel, and the area of the blue sub-pixel is The area is twice the area of the red sub-pixel.

For example, the scan driving circuit is a row driving array substrate (GOA) circuit.

At least one embodiment of the present disclosure further provides a method for preparing a display substrate, including: providing a base substrate, forming a plurality of first pixel units arranged in an array in a first region of the base substrate; and A plurality of scan driving circuits and a plurality of second pixel units are formed in a second region on one or more sides of the first region; wherein, the plurality of first pixel units form a display with a first resolution, and the plurality of The second pixel units form a display with a second resolution, and the first resolution is greater than the second resolution.

For example, forming the plurality of scan driving circuits and the plurality of second pixel units in the second region on one or more sides of the first region includes:

Forming a plurality of scan driving circuits and pixel driving circuits of sub-pixels in the second pixel unit in the second area; and

The light-emitting structure layer of the sub-pixel in the second pixel unit is formed on the upper layer of the pixel driving circuit of the sub-pixel in the second pixel unit, or the sub-pixel in the scan driving circuit and the second pixel unit The upper layer of the pixel driving circuit forms a light-emitting structure layer of a sub-pixel in the second pixel unit.

For example, the size of the sub-pixel in the second pixel unit formed in the second area is n times the size of the sub-pixel in the first pixel unit formed in the first area, and n is a positive integer greater than 1.

For example, the interval between the light-emitting structure layers of two adjacent groups of sub-pixels formed in the second area is greater than the interval between the light-emitting structure layers of two adjacent groups of sub-pixels formed in the first area; or , The interval between two adjacent sub-pixels having the same color light-emitting structure layer formed in the second area is greater than that between two adjacent sub-pixels having the color light-emitting structure layer formed in the first area. The interval between pixels.

For example, the second region includes a plurality of first column regions and second column regions arranged in sequence, the scan driving circuit is formed in the first column region, and the second column region is formed in the second column region. The pixel driving circuit of the sub-pixel in the two-pixel unit.

For example, the second area includes a plurality of first block areas and a second block area, the plurality of first block areas and the plurality of second block areas are arranged at intervals, and all the first block areas are formed in the first block area. The scan driving circuit forms a pixel driving circuit for sub-pixels in the second pixel unit in the second block area.

For example, the second pixel unit adopts an RGB arrangement, a Pentile arrangement, or one of the RGB Delta arrangements.

For example, each second pixel unit includes two green sub-pixels, one red sub-pixel and one blue sub-pixel, the area of the red sub-pixel is twice the area of the green sub-pixel, and the blue sub-pixel The area of the color sub-pixel is twice the area of the red sub-pixel.

For example, the scan driving circuit is an array substrate row driving GOA circuit.

At least one embodiment of the present disclosure also provides a display panel including the display substrate.

Description of the drawings

Hereinafter, the embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings, so that those of ordinary skill in the art can more clearly understand the embodiments of the present disclosure, in which:

Figure 1 is a schematic diagram of the effective display area and the GOA circuit distribution in the related art;

2 is a schematic diagram of the positions of the first area and the second area according to the embodiment of the disclosure;

FIG. 3 is an example of arrangement of pixel units and scan driving circuits according to an embodiment of the disclosure;

4 is another example of arrangement of pixel units and scan driving circuits according to the embodiments of the disclosure;

5 is another example of arrangement of pixel units and scan driving circuits according to the embodiments of the disclosure;

FIG. 6 is an example of the arrangement of the embodiments of the present disclosure with increased sub-pixel intervals;

FIG. 7 is an example of increasing the pixel unit interval by adopting the Pentile arrangement in the embodiment of the disclosure;

FIG. 8 is an example of increasing the sub-pixel interval by adopting the Pentile arrangement in the embodiment of the disclosure;

FIG. 9 is a schematic diagram of the second area of the embodiment of the disclosure adopting different implementation modes;

FIG. 10 is a schematic structural diagram of a display panel provided by an embodiment of the disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present disclosure. It should be noted that the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present disclosure, and cannot be understood as a limitation to the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. "Include" or "include" and other similar words mean that the element or item appearing before the word encompasses the element or item listed after the word and its equivalents, but does not exclude other elements or items. "Up", "Down", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

In addition, when describing exemplary embodiments, the description may have presented the method and/or process as a certain sequence of steps. However, the method or process should not be limited to the specific sequence of steps described. As those of ordinary skill in the art will understand, other sequence of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation on the claims. In addition, the claims for the method and/or process should not be limited to performing their steps in the written order. Those skilled in the art can easily understand that these orders can be changed and still belong to the scope of the present application.

As shown in FIG. 1, the display panel includes a display area 10 and a second area 20 located at the periphery of the display area 10. The second area 20 may be a frame area.

An embodiment of the present disclosure provides a display substrate, the display substrate comprising: a first area and a second area located on one or more sides of the first area, wherein:

The first area includes a plurality of first pixel units arranged in an array, and the plurality of first pixel units form a display with a first resolution;

The second area includes a plurality of scan driving circuits and a plurality of second pixel units, and the plurality of second pixel units form a display with a second resolution;

The first resolution is greater than the second resolution.

In the embodiment of the present disclosure, pixel units are provided in the second area 20 to form a display with a resolution lower than that of the first area. Since the resolution of the second area is lower than that of the first area, the second area 20 has more blank areas than the first area 10. By setting the scan drive circuit in the second area 20 where there is no pixel unit , So that the scan driving circuit and the pixel units in the second area 20 share the same area, so that the frame area originally used for accommodating non-light emitting devices can also be displayed. In this way, the non-luminous frame area can also be illuminated.

The second area 20 may be provided on one or more sides of the first area. For example, the second area is symmetrically arranged with respect to the first area 10, that is, the second area 20 is arranged on the left and right edges of the first area 10. FIG. 2 shows an example of the relationship between the first area 10 and the second area 20. In FIG. 2, the second area 20 is located at the left and right edges of the first area 10. In other examples, the second area 20 can also be arranged on one side, for example, the second area 20 is arranged at a single side edge of the first area 10.

Since the resolution of the second area is lower than the resolution of the first area, that is, the arrangement of the second pixel units in the second area is not as compact as the arrangement of the first pixel units in the first area, and blank areas 21 will be left. The area 21 does not have any wiring design. Therefore, the scan driving circuit can be arranged in the second area where there is no second pixel unit, for example, at an interval between adjacent pixel units. Since the total area of the second area is determined, that is, the sum of the area of the pixel display device and the area of the blank area is fixed. Therefore, if there are more pixel units in the second area and the display effect is relatively good, then The area where the scan driving circuit is arranged is less; if the pixel units in the second area are arranged less, the area where the scan driving circuit can be arranged is more. Therefore, the design can be based on the design size of the scan drive circuit and the low resolution size of the second area to consider, and design the required arrangement of various products.

For example, in order to realize the display of the second area, an optional way is not to change the structure of the second pixel unit in the second area, that is, the light-emitting structure layer of the sub-pixel in the second pixel unit is still disposed in the first pixel unit. The upper layer of the pixel driving circuit of the sub-pixels in the two pixel units realizes the display of the second area through the arrangement of the second pixel units. Another alternative is to change the structure of the second pixel unit in the second area, and set the light-emitting structure layer of the sub-pixel in the second pixel unit in the scan driving circuit and the pixel drive of the sub-pixel in the second pixel unit. The upper layer of the circuit.

When the structure of the second pixel unit is not changed, the pixel unit and the scan drive circuit can be arranged at intervals to achieve display. There are many ways to arrange the intervals, such as arranged in columns: multiple arrangement in the second area. The scan driving circuit is arranged in the first column area and the second pixel unit is arranged in the second column area. Wherein, one or more columns of scan driving circuits can be arranged in the first column area; one or more columns of pixel units can be arranged in the second column area. Another example is the arrangement of blocks: a plurality of first block areas and second block areas are arranged in the second area, the first block area and the second block area are arranged adjacently, and the scan driving circuit is arranged in the first block area, The second pixel unit is arranged in the second block area. Wherein, one or more scan driving circuits may be arranged in the first area; one or more pixel units may be arranged in the second area.

When changing the structure of the second pixel unit in the second area, in order to arrange the light emitting structure layer of the sub-pixel in the second pixel unit on the upper layer of the scan driving circuit and the pixel driving circuit of the sub-pixel in the second pixel unit, one An alternative way is to change (eg increase) the size of the sub-pixel light-emitting structure layer in the second pixel unit. For example, the size of the sub-pixel in the second pixel unit is set to n times the size of the sub-pixel in the first pixel unit, and n is a positive integer greater than 1. For another example, each second pixel unit is set to include two green sub-pixels, one red sub-pixel and one blue sub-pixel, where the red sub-pixel is twice the size of the green sub-pixel, and the blue sub-pixel is the red sub-pixel. 2 times the pixel size. Another alternative is to increase the interval between two adjacent second pixel units or increase the interval between sub-pixels in each second pixel unit. For example, the interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the second area is greater than the interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the first area, and a group of sub-pixels forms a first area. Two pixel unit. Alternatively, the interval between two adjacent sub-pixels having the same color light-emitting structure layer in the second area is greater than the interval between two adjacent sub-pixels having the color light-emitting structure layer in the first area. Regardless of the arrangement of the light-emitting structure layer, the light-emitting structure layer should be electrically connected to the corresponding pixel driving circuit.

For example, when the structure of the second pixel unit is not changed, the size of the sub-pixel light-emitting structure layer in the second pixel unit can be changed in combination with the above, or the interval between two adjacent second pixel units can be increased or the second pixel unit can be increased. The spacing of the sub-pixels is used to realize the display of the second area.

The above describes the arrangement of the light-emitting structure layer when the structure of the second pixel unit in the second area is changed. In the lower layer of the light-emitting structure layer 200, the arrangement of the pixel drive circuit P and the scan drive circuit GOA can be the same as described above. Column arrangement or block arrangement, other arrangements can also be used, for example, all scan drive circuits are arranged together, and all pixel drive circuits are arranged together. In this structure, the arrangement of the pixel drive circuit and the scan drive circuit can be unlimited.

The following is an example for description.

In some embodiments of the present disclosure, the structure of the second pixel unit in the second area is not changed. Each pixel unit includes several sub-pixels, each sub-pixel includes a light-emitting structure layer and a pixel drive circuit, and the light-emitting structure layer of each sub-pixel They are all arranged on the upper layer of the pixel driving circuit. The pixel units in the second area are arranged in columns, and spaces for accommodating the scan driving circuit are arranged between the columns. As shown in Figure 3, the part of the second area, in the figure

Indicates the scan driving circuit 210, which can be one or multiple,

Representing the pixel unit 22, the scan driving circuit is arranged between any two columns of pixel units.

In some embodiments of the present disclosure, the structure of the second pixel unit in the second area is also not changed, the pixel units in the second area are arranged at block intervals, and the scan driving circuit is split into the blanks of these intervals. In the area 21, for example, the pixel units in the second area may be arranged in the shape of a "pin", and the scan driving circuit is arranged in the space area between the pixel units forming the shape of the "pin". The part of the second area is shown in Figure 4.

Indicates the scan driving circuit 210,

Represents the pixel unit 22, "□" represents the blank area 21, and the scan driving circuit is arranged in a blank position between each pixel unit. The arrangement of blocks can ensure higher PPI than the arrangement of columns.

In other embodiments, it is also possible to combine arrangement by column and arrangement by block to increase the interval between pixel units in a column of pixel units, so that the interval between pixel units can accommodate the scan driving circuit, as shown in FIG. 5 .

In some embodiments of the present disclosure, each pixel unit includes three sub-pixels, red (R), green (G), and blue (B), and the sub-pixels can be arranged in standard RGB arrangement, or Pentile arrangement, or RGB Delta arrangement, etc. .

In this embodiment, the light-emitting structure layer and the pixel driving circuit in the pixel unit are separately provided. The pixel driving circuit and the scanning driving circuit are arranged in the lower layer of the light emitting structure layer. In order to make the light-emitting structure layer cover the pixel drive circuit and the scan drive circuit. The interval can be increased in pixel units. As shown in FIG. 6, "□" in the figure represents the light-emitting structure layer 200 of one pixel unit (a group of sub-pixels). Taking the Pentile arrangement of sub-pixels as an example, the realization of increasing the spacing between the light-emitting structure layers of the pixel unit is shown in Figure 7. The left side of Figure 7 shows three pixel units, the right side is an example after increasing the spacing, and the left side of Figure 7 The arrangement without increasing the interval is the arrangement in the first area, namely the AA area.

FIG. 8 shows another embodiment, which is different from the embodiment shown in FIG. 7 in that the interval is increased in units of sub-pixels in the embodiment of FIG. 8. Still taking the Pentile arrangement of sub-pixels as an example, increasing the spacing of the sub-pixel light-emitting structure layers to achieve the structure shown in Figure 8. The left side of Figure 8 shows three pixel units, and the right side is after increasing the sub-pixel light-emitting structure layer spacing. Example.

In the embodiments of FIGS. 7 and 8, the light emitting structure layer 200 covers the pixel driving circuit and the scan driving circuit by increasing the interval. In the lower layer of the light-emitting structure layer, the arrangement of the pixel driving circuit and the scanning driving circuit can adopt any of the arrangements described in FIGS. 3-4.

In the example of FIG. 9 there are two second regions 20, where the second region 20 on the right adopts the arrangement of light-emitting structure layers in the embodiment shown in FIGS. 6-7, and the second region 20 on the left adopts the arrangement shown in FIG. The arrangement of light-emitting structure layers in the illustrated embodiment.

As shown in FIG. 10, the display panel further includes a substrate 100, a scan driving circuit 110 located on the substrate 100, and a pixel driving circuit 120, a light emitting structure layer 200 located on the scan driving circuit 110 and the pixel driving circuit 120, located on the light emitting structure layer The color film layer 150 on 200, and the cathode 300 on the color film layer 150. The display panel may further include a planarization layer 50 on the scan driving circuit 110 and the pixel driving circuit 120, and a passivation layer 60 on the light emitting structure layer 200.

In the foregoing embodiments, the scan driving circuit may be an array substrate row driving (GOA) circuit, and the light emitting structure layer may be an electroluminescence (EL) device. On the basis of the above-mentioned embodiment, it is also possible to reduce the size of the GOA, or only put the gate line (Gate) GOA in the second area and leave the effective (EM) GOA in the frame area to achieve a narrow frame. Small non-luminous border area.

When performing GOA layout design in the blank area of the pixel unit wiring, higher requirements are put forward for the wiring between various signal lines, and relevant metal layers can be appropriately added to meet the signal line wiring requirements.

Some embodiments of the present disclosure also provide a method for preparing a display substrate, the method including:

A base substrate is provided, a plurality of first pixel units 12 arranged in an array are formed in a first area 10 of the base substrate, and a plurality of scan driving circuits and a plurality of scan drive circuits are formed in a second area 20 of the base substrate. A second pixel unit 22, the plurality of first pixel units 12 form a display with a first resolution, the plurality of second pixel units 22 form a display with a second resolution, the first resolution is greater than The second resolution.

In an exemplary embodiment, forming a plurality of scan driving circuits and a plurality of second pixel units in the second region of the base substrate includes:

Forming a plurality of scan driving circuits and pixel driving circuits for sub-pixels in the second pixel unit in the second area of the substrate;

The light-emitting structure layer of the sub-pixel in the second pixel unit is formed on the upper layer of the pixel driving circuit of the sub-pixel in the second pixel unit, or the pixel of the sub-pixel in the scan driving circuit and the second pixel unit The upper layer of the driving circuit forms the light-emitting structure layer of the sub-pixel in the second pixel unit.

In an exemplary embodiment, the size of the sub-pixel in the second pixel unit formed in the second area is n times the size of the sub-pixel in the first pixel unit formed in the first area, and n is a positive integer greater than 1.

In an exemplary embodiment, the interval between the light-emitting structure layers of two adjacent groups of sub-pixels formed in the second area is greater than that of the light-emitting structure layers of adjacent two groups of sub-pixels formed in the first area. Or, the interval between two adjacent sub-pixels having the same color light-emitting structure layer formed in the second area is greater than that of the color light-emitting structure formed in the first area The interval between two adjacent sub-pixels of the layer.

In an exemplary embodiment, the second region includes a plurality of first column regions and second column regions sequentially arranged, the scan driving circuit is formed in the first column region, and the scan driving circuit is formed in the second column region. The area forms the pixel driving circuit of the sub-pixel in the second pixel unit.

In an exemplary embodiment, the second area includes a plurality of first block areas and second block areas, the first block areas and the second block areas are arranged at intervals, and the scan is formed in the first block area. A driving circuit, forming a pixel driving circuit for sub-pixels in the second pixel unit in the second block area.

In an exemplary embodiment, the second pixel unit adopts an RGB arrangement, or a Pentile arrangement, or an RGB Delta arrangement.

In an exemplary embodiment, each second pixel unit includes two green sub-pixels, one red sub-pixel and one blue sub-pixel. The red sub-pixel is twice the size of the green sub-pixel, and the blue sub-pixel The sub-pixel is twice the red sub-pixel.

In an exemplary embodiment, the scan driving circuit is an array substrate row driving GOA circuit.

In order to achieve a narrow frame, the embodiments of the present disclosure utilize high-resolution plus low-resolution (H+L) technology on one screen to design the areas on both sides of the display panel to be a second display area that is different from the effective display area in the middle. The resolution of is lower than the first display area, that is, the effective display area is a high-resolution area, and the second area is a low-resolution area. Since the arrangement of pixel units in low-resolution areas will leave more blank areas (that is, no wiring areas) than in high-resolution areas, these blank areas can be used to make the original border area (GOA area) The GOA circuit in is set in the blank area in the second area, that is, no pixel area, so as to save the wiring area of GOA, or re-arrange the pixel definition layer (PDL) of the low-resolution area on both sides to cover the upper part of GOA , Even the GOA area will have EL devices. Through the above method, the area of the non-luminous frame area on the left and right sides of the OLED can be reduced, and the effect of a narrow frame can be achieved. Since only the few lines on both sides of the display panel are used, it has little effect on the display, but it can greatly reduce the distance between the borders.

The following points need to be explained:

(1) The drawings of the embodiments of the present disclosure only refer to the structures related to the embodiments of the present disclosure, and other structures can refer to the usual design.

(2) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments, and these new embodiments should all belong to the scope of the present disclosure.

The above are only exemplary embodiments of the present disclosure, and the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or changes within the technical scope disclosed in the embodiments of the present disclosure. All replacements shall be covered within the protection scope of the present disclosure.

Claims

A display substrate includes: a first area and a second area located on one or more sides of the first area, wherein:

The first area includes a plurality of first pixel units arranged in an array, and the plurality of first pixel units form a display with a first resolution;

The second area includes a plurality of scan driving circuits and a plurality of second pixel units, and the plurality of second pixel units form a display with a second resolution; and

The first resolution is greater than the second resolution.
The display substrate according to claim 1, wherein:

The light-emitting structure layer of the sub-pixel in the second pixel unit is disposed on the upper layer of the pixel driving circuit of the sub-pixel in the second pixel unit; or

The light-emitting structure layer of the sub-pixel in the second pixel unit is arranged on the upper layer of the scan driving circuit and the pixel driving circuit of the sub-pixel in the second pixel unit.
The display substrate according to claim 2, wherein:

The size of the sub-pixel in the second pixel unit is n times the size of the sub-pixel in the first pixel unit, and n is a positive integer greater than 1.
The display substrate according to claim 2, wherein:

The interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the second area is greater than the interval between the light-emitting structure layers of two adjacent groups of sub-pixels in the first area, and a group of sub-pixels forms a pixel unit ;or,

The interval between two adjacent sub-pixels having the same color light-emitting structure layer in the second area is greater than the interval between two adjacent sub-pixels having the color light-emitting structure layer in the first area.
The display substrate according to any one of claims 1 to 4, wherein:

The second area includes a plurality of first column areas and second column areas arranged in sequence, the scan driving circuit is arranged in the first column area, and the pixel driving circuit of the sub-pixels in the second pixel unit is arranged In the second column area.
The display substrate according to any one of claims 1 to 4, wherein:

The second region includes a plurality of first block regions and a plurality of second block regions, the plurality of first block regions and the plurality of second block regions are arranged at intervals, and the scan driving circuit is arranged in the plurality of A first block area, and the pixel driving circuits of sub-pixels in the second pixel unit are arranged in the plurality of second block areas.
The display substrate according to any one of claims 1 to 4, wherein:

The second pixel unit adopts an RGB arrangement, or a Pentile arrangement, or an RGB Delta arrangement.
The display substrate according to claim 7, wherein:

Each second pixel unit includes two green sub-pixels, one red sub-pixel and one blue sub-pixel. The area of the red sub-pixel is twice the area of the green sub-pixel, and the area of the blue sub-pixel is 2 times the area of the red sub-pixel.
The display substrate according to claim 1, wherein:

The scan driving circuit is a row driving array substrate (GOA) circuit.
A method for preparing a display substrate includes:

Provide a base substrate,

Forming a plurality of first pixel units arranged in an array in the first region of the base substrate; and

A plurality of scan driving circuits and a plurality of second pixel units are formed in a second region on one or more sides of the first region; wherein,

The plurality of first pixel units form a display with a first resolution, and the plurality of second pixel units form a display with a second resolution, the first resolution being greater than the second resolution.
11. The method of claim 10, wherein forming the plurality of scan driving circuits and the plurality of second pixel units in the second region on one or more sides of the first region comprises:

Forming a plurality of scan driving circuits and pixel driving circuits of sub-pixels in the second pixel unit in the second area; and

The light-emitting structure layer of the sub-pixel in the second pixel unit is formed on the upper layer of the pixel driving circuit of the sub-pixel in the second pixel unit, or the sub-pixel in the scan driving circuit and the second pixel unit The upper layer of the pixel driving circuit forms a light-emitting structure layer of a sub-pixel in the second pixel unit.
11. The method of claim 11, wherein the size of the sub-pixel in the second pixel unit formed in the second area is n times the size of the sub-pixel in the first pixel unit formed in the first area, n is a positive integer greater than 1.
The method according to claim 11, wherein the interval between the light-emitting structure layers of the adjacent two groups of sub-pixels formed in the second area is greater than that of the adjacent two groups of sub-pixels formed in the first area. The interval between the light-emitting structure layers; or, the interval between two adjacent sub-pixels having the same color light-emitting structure layer formed in the second region is greater than that of the sub-pixels formed in the first region with the The interval between two adjacent sub-pixels of the color light emitting structure layer.
11. The method according to claim 11, wherein the second area includes a plurality of first column areas and second column areas sequentially arranged, the scan driving circuit is formed in the first column area, and the scan driving circuit is formed in the first column area. Two column areas form the pixel driving circuit of the sub-pixels in the second pixel unit.
The method according to claim 11, wherein the second area includes a plurality of first block areas and a second block area, the plurality of first block areas and the plurality of second block areas are arranged at intervals, and The scan driving circuit is formed in the first block area, and the pixel driving circuit of the sub-pixels in the second pixel unit is formed in the second block area.
The method according to claim 11, wherein the second pixel unit adopts an RGB arrangement, a Pentile arrangement, or an RGB Delta arrangement.
The method according to claim 11, wherein each of the second pixel units includes two green sub-pixels, one red sub-pixel, and one blue sub-pixel, and the area of the red sub-pixel is the same as that of the green sub-pixel The area is twice the area, and the area of the blue sub-pixel is twice the area of the red sub-pixel.
The method according to claim 11, wherein the scan driving circuit is an array substrate row driving GOA circuit.
A display panel comprising the display substrate according to any one of claims 1-9.