CN116168659A - Display panel and display device - Google Patents

Abstract

The application discloses a display panel and a display device, wherein the display panel comprises a first display area and a second display area, the bottom of the second display area is used for mounting micro components, the display panel further comprises a plurality of first pixel units and a plurality of second pixel units, the plurality of first pixel units are arranged in the first display area, and the plurality of second pixel units are arranged in the second display area; wherein the area of each second pixel unit is smaller than the area of each first pixel unit; the density of the first pixel units of the first display area is smaller than that of the second pixel units of the second display area. The problem that saw teeth are serious when the edge of the camera is displayed is solved through the scheme.

Description

Display panel and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel and a display device.

Background

With the continuous development of liquid crystal displays, the requirements on the screen ratio are also higher and higher, and the concept of a comprehensive screen is gradually evolved, namely, the screen ratio of the comprehensive screen reaches the degree of approximately 100%. With the development of the full-screen technology, the under-screen camera technology gradually enters the panel industry and becomes a mainstream camera hiding technology. The under-screen camera technology (Under Panel Camera) means that a camera is placed below a display screen, and meanwhile, the display screen in the camera area can still display normally, so that the full-screen display technology in the true sense is realized. However, in order to achieve a full screen and to achieve a display panel with a front camera, for example, in a mobile phone, the front camera needs to be arranged in a display area of the display panel, but the biggest difficulty in the prior art is that the display of the display area is not affected, and the shooting quality of the camera is ensured.

And among them, the display problem of the display area is a serious issue. If the edge display market at the camera position is serious in saw teeth, gray level transition cannot be realized. Which has become a problem to be solved by those skilled in the art.

Disclosure of Invention

The purpose of this application is to provide a display panel and display device, appears the serious problem of sawtooth when solving camera position department edge and shows.

The application discloses a display panel, which comprises a first display area and a second display area, wherein the bottom of the second display area is used for mounting micro components, the display panel also comprises a plurality of first pixel units and a plurality of second pixel units, the plurality of first pixel units are arranged in the first display area, and the plurality of second pixel units are arranged in the second display area; wherein the area of each second pixel unit is smaller than the area of each first pixel unit; the density of the first pixel units of the first display area is smaller than that of the second pixel units of the second display area.

Optionally, the area of the sub-pixel in the second pixel unit is less than or equal to half of the area of the sub-pixel with the same color in the first pixel unit; the density of the first pixel units of the first display area is less than or equal to half of the density of the second pixel units of the second display area.

Optionally, the display panel includes a plurality of first data lines, a plurality of second data lines, and a scan line, where the plurality of first data lines provide data signals for the first pixel units, and the plurality of second data lines provide data signals for the second pixel units; the extending direction of the first data line is consistent with that of the second data line.

Optionally, the second display area includes a third transition area and a fourth display area; the third transition area is arranged around the fourth display area; the bottom of the fourth round display area is used for installing micro components; the second pixel unit is arranged in the third transition region; the fourth display area is provided with the second pixel unit or the first pixel unit.

Optionally, the third transition area is annular, the fourth display area is circular, and the third transition area is arranged between the first display area and the fourth display area; the fourth display area is provided with only the first pixel unit.

Optionally, the second pixel unit includes a second red sub-pixel, a second green sub-pixel, and a second blue sub-pixel; in one of the second pixel units, a second red sub-pixel, a second green sub-pixel and a second blue sub-pixel are arranged along a direction perpendicular to the data line; and along the direction of the first data line, two adjacent second red sub-pixels or second green sub-pixels or second blue sub-pixels are respectively a main area sub-pixel and a secondary area sub-pixel.

Optionally, when the display panel displays in the first state, the second pixel unit displays normally; when the display panel is displayed in the second state, the brightness of the second pixel unit gradually decreases from the first display area to the fourth display area.

Optionally, the second pixel unit includes three second sub-pixels, in the second display area, two columns of the second sub-pixels are disposed between two adjacent first data lines, and the second data lines are disposed between two adjacent first data lines; between two adjacent first data lines, one of the two columns of second sub-pixels is connected to the first data line, and the other column is connected to the second data line.

Optionally, the second pixel unit includes three second sub-pixels, in the second display area, a plurality of columns of the second sub-pixels are arranged in a one-to-one correspondence with a plurality of second data lines, and two columns of the second sub-pixels are arranged between two adjacent first data lines; the first data line and the second data line are positioned on different layers, and on the substrate projection of the display panel, part of the first data line is overlapped with the second data line.

The application also discloses a display device, which comprises a driving circuit and the display panel.

The area of the second pixel units of the second display area is set smaller, and the density of the second pixel units is larger, so that the number of the second pixel units of the area between the second display area and the first display area is larger. When the display panel displays, the boundary problem between the first display area and the second display area is caused, so that the difference between the first display area and the second display area is larger, the second pixel units can be arranged at the edge positions of the first display area and the second display area to form a gray level transition area, and the second pixel units with larger number are arranged on the unit area due to the large density of the second pixel units, so that the data of the sub-pixels in the gray level transition are not limited, smooth transition is possible, the boundary problem of the first display area and the second display area is solved when the display is improved, and the problem of serious saw teeth when the edge of the camera is displayed is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:

fig. 1 is a schematic view of a display panel according to a first embodiment of the present application;

FIG. 2 is a schematic diagram of a pixel of a first display region of a display panel of the present application;

FIG. 3 is a schematic diagram of a pixel of a second display region of the display panel of the present application;

FIG. 4 is a schematic view of another pixel of the second display area of the display panel of the present application;

FIG. 5 is a schematic view of a display panel according to a second embodiment of the present application;

FIG. 6 is a schematic diagram of a pixel of a fourth display region of the display panel of the present application;

fig. 7 is a schematic diagram of a display device of the present application.

1, a display panel; 2. a first display area; 3. a second display area; 4. a third transition zone; 5. a fourth display area; 10. a first pixel unit; 11. a first subpixel; 20. a second pixel unit; 21. a second subpixel; 22. a second red subpixel; 23. a second green sub-pixel; 24. a second blue sub-pixel; 30. a first data line; 31. a second data line; 40. a third pixel unit; 50. a display device; 51. and a driving circuit.

Detailed Description

It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. In addition, terms of the azimuth or positional relationship indicated by "upper", "lower", "left", "right", "vertical", "horizontal", etc., are described based on the azimuth or relative positional relationship shown in the drawings, and are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

The present application is described in detail below with reference to the attached drawings and alternative embodiments.

Fig. 1 is a schematic view of a display panel of the present application, fig. 2 is a schematic view of pixels of a first display area of the display panel of the present application, fig. 3 is a schematic view of pixels of a second display area of the display panel of the present application, and referring to fig. 1 to 3, the present application discloses a display panel, wherein a display panel 1 includes a first display area 2 and a second display area 3, a bottom of the second display area 3 is used for mounting micro components, the display panel 1 further includes a plurality of first pixel units 10 and a plurality of second pixel units 20, the plurality of first pixel units 10 are disposed in the first display area 2, and a plurality of second pixel units 20 are disposed in the second display area 3; wherein the area of each of the second pixel units 20 is smaller than the area of each of the first pixel units 10; the density of the first pixel units 10 of the first display area 2 is smaller than the density of the second pixel units 20 of the second display area 3.

The area of the second pixel units 20 of the second display area 3 is set smaller, and the density of the second pixel units 20 is larger, so that the number of the second pixel units 20 of the area between the second display area 3 and the first display area 2 is larger. When the display panel 1 displays, due to the boundary problem between the first display area 2 and the second display area 3, the difference between the first display area 2 and the second display area 3 is larger, so that the second pixel units 20 can be set to be gray transition areas at the edge positions of the first display area 2 and the second display area 3, and due to the large density of the second pixel units 20, the second pixel units 20 with more numbers are arranged in unit area, so that the data of sub-pixels in gray transition is not limited, the boundary problem of the first display area 2 and the second display area 3 is smoothly transited as much as possible, and the problem that saw teeth are serious when the edge display at the position of a camera is solved during display is improved.

It will be appreciated that the bottom mounted micro-components of the second display area 3 include, but are not limited to, cameras, iris recognition sensors, 3D structured light sensors, infrared sensors, etc. The second display area 3 can normally display a picture, and is in a dark state when not displayed.

Specifically, the area of the sub-pixels in the second pixel unit 20 is less than or equal to half of the area of the sub-pixels of the same color in the first pixel unit 10; the density of the first pixel units 10 of the first display area 2 is less than or equal to half the density of the second pixel units 20 of the second display area 3.

In the present embodiment, when the area of the sub-pixels in the second pixel unit 20 is equal to half the area of the same color of the font sub-pixels in the first pixel unit 10, the number of sub-pixels in the second pixel unit 20 is equal to twice the number of sub-pixels in the first pixel unit 10 per unit area. Further, the number of sub-pixels of the second pixel unit 20 is larger in the same gray scale region between the first display region 2 and the second display region 3. When the number of subpixels is small in the case of realizing the gray-scale transition, for example, when only five subpixels are provided, when it is necessary to transition from 255 gray-scale to 0 gray-scale, five transitions occur from 255, 200, 150, 100, 50, 0. However, ten transitions from 255, 225, 200, 175, 150, 125, 100, 75, 50, 25, 0 may occur if the number of subpixels is doubled. In contrast, the transition picture is smoother in the case where the transition area is unchanged.

Specifically, the area of the sub-pixels in the second pixel unit 20 is equal to half the area of the sub-pixels of the same color in the first pixel unit 10. I.e. one first pixel unit 10 sub-pixel area between two data lines is provided with two second pixel units 20 sub-pixels.

The first pixel unit 10 and the second pixel unit 20 respectively adopt a pixel arrangement mode of RGB strip, that is, the second pixel unit 20 includes a second red sub-pixel 22, a second green sub-pixel 23 and a second blue sub-pixel 24; in one of the second pixel units 20, the second red sub-pixel 22, the second green sub-pixel 23, and the second blue sub-pixel 24 are arranged in a direction perpendicular to the data line, i.e., extend in a direction of a scan line.

In the second display area 3, in addition to the first data line 30, a second data line 31 for supplying a data signal to the second pixel unit 20 is provided. The display panel 1 includes a plurality of first data lines 30, a plurality of second data lines 31, and scan lines, wherein the plurality of first data lines 30 provide data signals for the first pixel units 10, and the plurality of second data lines 31 provide data signals for the second pixel units 20; the first data line 30 is aligned with the second data line 31 in the extending direction.

Referring to fig. 3, in an embodiment, the second data line 31 is only correspondingly disposed in the second display area 3, and a portion of the second data line 31 extends from the first display area 2 to the binding area, and is connected to an external data driving chip. The second pixel unit 20 includes three second sub-pixels 21, two columns of the second sub-pixels 21 are disposed between two adjacent first data lines 30 in the second display area 3, and the second data line 31 is disposed between two adjacent first data lines 30; between two adjacent first data lines 30, one of the two columns of the second sub-pixels 21 is connected to the first data line 30, and the other column is connected to the second data line 31.

The odd-numbered columns of second sub-pixels 21 in the second display area 3 are respectively connected to the plurality of first data lines 30, and the even-numbered columns of second sub-pixels 21 are respectively connected to the plurality of second data lines 31. In this embodiment, part of the second sub-pixels 21 are connected by the borrowed part of the first data lines 30, and the other part is connected by the newly added second data lines 31.

Specifically, the first data line 30 and the second data line 31 are located in different layers, and on the substrate projection of the display panel 1, a part of the first data line 30 coincides with the second data line 31. Generally, the first data line 30 is disposed on the second metal layer of the display panel 1, that is, the metal layer where the source and the drain are disposed on the display panel 1, in this embodiment, the second data line 31 may be disposed on a third metal layer, and the third metal layer is disposed on the second metal layer, and an insulating layer is disposed therebetween for insulation. For a display panel 1 of a partial specification without the third metal layer, the third metal layer may be disposed at a partial position of the second display area 3 to serve as the second data line 31. Wherein the third metal layer of the display panel may be consistent with the thickness of the first metal layer, about 4000 a.

Of course, for the embodiment using less second data lines 31, the second data lines 31 may be disposed in the second metal layer, specifically, between two adjacent first data lines 30, that is, between two columns of second sub-pixels 21.

Referring to fig. 4, in another embodiment, in the second display area 3, a plurality of columns of the second sub-pixels 21 are disposed in a one-to-one correspondence with a plurality of the second data lines 31, and two columns of the second sub-pixels 21 are disposed between two adjacent first data lines 30; in this embodiment, the second sub-pixels 21 do not use the first data lines 30 at all, but two times the number of the second data lines 31 compared with the previous embodiment are arranged, so that in the second display area 3, each column of the second sub-pixels 21 is arranged corresponding to one second data line 31, and the data signal of the part is also provided by the data driving chip. However, in order to secure the opening, in the present embodiment, two adjacent second data lines 31 are respectively disposed at both sides of one first data line 30. The first data line 30 and the second data line 31 are located at different layers, and on the substrate projection of the display panel 1, part of the first data line 30 and the second data line 31 overlap, and are shielded from light by the same shielding layer.

In this application, even though the second pixel unit 20 of the second display area 3 is added, and the second sub-pixel 21 in the second pixel unit 20 is different from the first sub-pixel 11 in the first pixel unit 10, the second sub-pixel 21 and the first sub-pixel 11 may share a scan line, which is not described herein.

Taking a common display screen as an example, the size of the front camera is generally concentrated at about 4mm, and taking a 6-inch HD mobile phone display screen as an example, the single sub-pixel size is 34.5x103.5um, and the number of the second sub-pixels 21 in the second display area 3 of the camera is about 110, that is, an area with a size of 35 pixel units is set. When the pixel units at the camera perform normal display function, a curved display boundary appears, the common special-shaped display boundary uses a shading layer to perform different aperture ratio processing to achieve the aim of gray scale compensation and display sawtooth reduction, and the processing mode needs enough edge pixels to perform processing. After passing through the application, the number of the second sub-pixels 21 in the second display area 3 can reach about 220, which is enough for gray level transition.

Referring to fig. 5, fig. 5 is a schematic view of a display panel according to a second embodiment of the present application, and in combination with fig. 2-4, another display panel 1 is disclosed herein, the display panel 1 comprising a first display area 2 and a second display area 3, the second display area 3 comprising a third transition area 4 and a fourth display area 5; the third transition area 4 is arranged around the fourth display area 5; the bottom of the fourth display area 5 is used for mounting micro components; the first display area 2 is provided with a first pixel unit 10, and the third annular transition area is internally provided with a second pixel unit 20; wherein the area of each of the second pixel units 20 is smaller than the area of each of the first pixel units 10; the density of the first pixel cells 10 of the first display area 2 is smaller than the density of the second pixel cells 20 of the third transition area 4. It will be appreciated that the third transition zone 4 is provided in a display area where the display panel 1 can be displayed as well.

In this embodiment, a third transition region 4 is disposed between the first display region 2 and the fourth display region 5, in which a second pixel unit 20 is disposed, and the area of the sub-pixel in the second pixel unit 20 is less than or equal to half of the area of the sub-pixel with the same color in the first pixel unit 10, and the density of the first pixel unit 10 in the first display region 2 is less than or equal to half of the density of the second pixel unit 20 in the second display region 3. The boundary between the first display area 2 and the fourth display area 5 is formed by arranging the transition area, and the gray-scale transition is performed by the second sub-pixel 21 of the transition area, so that the design of the fourth display area 5 and the pixels of the first display area 2 is not affected. And the data of the sub-pixels in the gray level transition is not limited, the transition is as smooth as possible, the boundary problem of the first display area 2 and the second display area 3 is solved when the display is improved, and the problem of serious saw teeth when the edge of the camera is displayed is solved.

Specifically, the third transition area 4 is annular, the fourth display area 5 is circular, and the third transition area 4 is disposed between the first display area 2 and the fourth display area 5; in general, the fourth display area 5, which is exemplified by a camera, may be configured as a circle, that is, a fourth circular display area.

Specifically, the fourth circular display area is provided with the second pixel unit 20 or the first pixel unit 10. The second pixel unit 20 or the first pixel unit 10 may be disposed in the fourth circular display area. The setting can be specifically performed according to actual conditions. If the fourth circular display area is provided with only the first pixel unit 10, the pixel resolution of the fourth circular display area is made to coincide with the pixel resolution of the first display area 2. Only in the transition region and in the third transition region 4

In this embodiment, the display panel 1 includes a plurality of first data lines 30, a plurality of second data lines 31, and scan lines, the plurality of first data lines 30 providing data signals for the first pixel units 10, and the plurality of second data lines 31 providing data signals for the second pixel units 20; the first data line 30 is aligned with the second data line 31 in the extending direction. The second pixel unit 20 includes a second red sub-pixel 22, a second green sub-pixel 23, and a second blue sub-pixel 24; in one of the second pixel units 20, the second red sub-pixel 22, the second green sub-pixel 23, and the second blue sub-pixel 24 are arranged in a direction perpendicular to the data line.

In the direction along the first data line 30, two adjacent second red sub-pixels 22 or second green sub-pixels 23 or second blue sub-pixels 24 are respectively a main sub-pixel and a sub-pixel. In this scheme, mainly when the transition region of the display panel 1 does not need to be transitioned, two adjacent second pixel units 20 thereof enable the area of a pixel point formed by two second pixel units 20 of the third transition region 4 to be exactly equal to a pixel point formed by one first pixel unit 10 in the first display region 2 and the fourth display region 5 through the design of the main and sub-region pixels in the eight domains. That is, when the gradation transition is not necessary, the third transition region is displayed with a small difference from the first display region 2 and the fourth display region 5.

Specifically, when the display panel 1 is displayed in the first state, the second pixel unit 20 displays normally; when the display panel 1 is displayed in the second state, the brightness of the second pixel unit 20 in the extending direction from the first display area 2 to the fourth display area 5 gradually decreases. When the first display state is that the display panel 1 displays normally, the camera is turned on, the third transition area 4 displays a normal picture, and the fourth display area 5 does not display, and the second pixel unit 20 of the third transition area 4 drives the main pixels and the sub pixels. The transition of the third transition region 4 with the first display region 2 is effected. The second display state and the fourth display area 5 are displayed, and when the camera is closed, the third transition area 4 needs to accept the gray level transition function of the fourth display area 5 and the first display area 2.

Specifically, the second pixel unit 20 includes three second sub-pixels 21, two columns of the second sub-pixels 21 are disposed between two adjacent first data lines 30 in the second display area 3, and the second data line 31 is disposed between two adjacent first data lines 30; between two adjacent first data lines 30, one of the two columns of the second sub-pixels 21 is connected to the first data line 30, and the other column is connected to the second data line 31.

The odd-numbered columns of second sub-pixels 21 in the second display area 3 are respectively connected to the plurality of first data lines 30, and the even-numbered columns of second sub-pixels 21 are respectively connected to the plurality of second data lines 31. In this embodiment, part of the second sub-pixels 21 are connected by the borrowed part of the first data lines 30, and the other part is connected by the newly added second data lines 31. In this embodiment, the second data line 31 may be disposed in the second metal layer, specifically between two adjacent first data lines 30, i.e. between two columns of second sub-pixels 21, and spaced apart from the first data lines 30.

In another embodiment, the second pixel unit 20 includes three second sub-pixels 21, in the second display area 3, a plurality of columns of the second sub-pixels 21 are disposed in a one-to-one correspondence with a plurality of the second data lines 31, and two columns of the second sub-pixels 21 are disposed between two adjacent first data lines 30; the first data line 30 and the second data line 31 are located at different layers, and on the substrate projection of the display panel 1, a part of the first data line 30 coincides with the second data line 31. In this embodiment, the second sub-pixels 21 do not use the first data lines 30 at all, but two times the number of the second data lines 31 compared with the previous embodiment are arranged, so that in the second display area 3, each column of the second sub-pixels 21 is arranged corresponding to one second data line 31, and the data signal of the part is also provided by the data driving chip. However, in order to secure the opening, in the present embodiment, two adjacent second data lines 31 are respectively disposed at both sides of one first data line 30. The first data line 30 and the second data line 31 are located at different layers, and on the substrate projection of the display panel 1, part of the first data line 30 and the second data line 31 overlap, and are shielded from light by the same shielding layer. In this embodiment, two adjacent second data lines 31 may adopt the design scheme of Dmux, i.e. one-driving-two, so as to reduce the number of source signal channels and save cost.

It is to be understood that the problem of light transmission for the camera may not need to be considered for the second display area 3. The mode that specifically mode passes through the mode that sets up the diaphragm layer on the display panel 1, and the optical cable layer sets up in the side of display panel 1, and parcel display panel 1 sets up, collects light through the partial diaphragm layer that sets up on display panel 1, transmits to the camera that sets up in display panel 1 bottom. Specifically, when the camera is started, the diaphragm layer is in a light-transmitting state, and light passing through the diaphragm layer is sequentially transmitted to the camera through the light transmission layer in the diaphragm layer. The light rays acquired successively by the camera are synthesized into a target image.

Referring to fig. 6, in another embodiment, the fourth circular display area may be further configured as a third pixel unit 40, where the sub-pixels of the third pixel unit 40 are half of the sub-pixels of the first pixel unit, and the density of the sub-pixels of the third pixel unit 40 in a unit area is consistent with the density of the sub-pixels of the first pixel unit. I.e., the sub-pixel area of the third pixel unit 40 is reduced, but the reduced area is not refilled with new sub-pixels, thereby forming a transparent region for light transmission. In this scheme, can promote the light inlet quantity of camera.

Referring to fig. 7, the present application also discloses a display device, the display device 50 includes a driving circuit 51 and the display panel 1 described above. The number of the sub-pixels in the camera area can be multiplied under the design of the patent, the pixel resolution of the camera can be increased, the defect of poor image quality of the conventional under-screen camera is overcome, the number of the pixels which can be used for gray level compensation is increased, the saw tooth sense of a display area can be weakened, and the picture taste is not sacrificed.

It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.

The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.

Claims (10)

1. A display panel comprises a first display area and a second display area, wherein the bottom of the second display area is used for installing micro components,

the display panel further comprises a plurality of first pixel units and a plurality of second pixel units, wherein the plurality of first pixel units are arranged in the first display area, and the plurality of second pixel units are arranged in the second display area;

wherein the area of each second pixel unit is smaller than the area of each first pixel unit; the density of the first pixel units of the first display area is smaller than that of the second pixel units of the second display area.

2. The display panel according to claim 1, wherein an area of the sub-pixel in the second pixel unit is equal to or smaller than half an area of the sub-pixel of the same color in the first pixel unit;

the density of the first pixel units of the first display area is less than or equal to half of the density of the second pixel units of the second display area.

3. The display panel of claim 1, wherein the display panel comprises a plurality of first data lines, a plurality of second data lines, and a scan line, the plurality of first data lines providing data signals for the first pixel cells, the plurality of second data lines providing data signals for the second pixel cells; the extending direction of the first data line is consistent with that of the second data line.

4. The display panel of claim 1, wherein the second display region comprises a third transition region and a fourth display region; the third transition area is arranged around the fourth display area; the bottom of the fourth display area is used for installing miniature components;

the second pixel unit is arranged in the third transition region; the fourth display area is provided with the second pixel unit or the first pixel unit.

5. The display panel of claim 4, wherein the third transition region is annular and the fourth display region is circular, the third transition region being disposed between the first display region and the fourth display region; the fourth display area is provided with only the first pixel unit.

6. The display panel of claim 4, wherein the second pixel unit includes a second red sub-pixel, a second green sub-pixel, and a second blue sub-pixel; in one of the second pixel units, a second red sub-pixel, a second green sub-pixel and a second blue sub-pixel are arranged along a direction perpendicular to the data line;

and along the direction of the first data line, two adjacent second red sub-pixels or second green sub-pixels or second blue sub-pixels are respectively a main area sub-pixel and a secondary area sub-pixel.

7. The display panel of claim 4, wherein the second pixel unit displays normally when the display panel is displayed in the first state; when the display panel is displayed in the second state, the brightness of the second pixel unit gradually decreases from the first display area to the fourth display area.

8. A display panel according to claim 3, wherein the second pixel unit comprises three second sub-pixels, two columns of the second sub-pixels are arranged between two adjacent first data lines in the second display area, and the second data lines are arranged between two adjacent first data lines;

between two adjacent first data lines, one of the two columns of second sub-pixels is connected to the first data line, and the other column is connected to the second data line.

9. A display panel according to claim 3, wherein the second pixel unit includes three second sub-pixels, and in the second display area, a plurality of columns of the second sub-pixels are arranged in a one-to-one correspondence with a plurality of the second data lines, and two columns of the second sub-pixels are arranged between two adjacent first data lines; the first data line and the second data line are positioned on different layers, and on the substrate projection of the display panel, part of the first data line is overlapped with the second data line.

10. A display device comprising a drive circuit and a display panel as claimed in any one of claims 1 to 9.

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