CN113707701A

CN113707701A - Display panel and display device

Info

Publication number: CN113707701A
Application number: CN202111016344.8A
Authority: CN
Inventors: 刘珂; 石领; 方飞; 陈义鹏; 王彦强
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-26
Anticipated expiration: 2041-08-31
Also published as: CN113707701B

Abstract

The application discloses display panel and display device belongs to and shows technical field. The display panel includes: the display device comprises a substrate, a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of first transparent connecting lines, wherein the plurality of first sub-pixels, the plurality of second sub-pixels and the plurality of first transparent connecting lines are positioned on the substrate. The orthographic projection area of the first sub-pixel on the substrate is smaller than the orthographic projection area of the second sub-pixel on the substrate, more first sub-pixels can be arranged in the first display area, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. And each first sub-pixel in each sub-pixel group can be electrically connected through the first transparent connecting line, so that the wiring density of the first transparent connecting line is reduced, the width of the first transparent connecting line is larger, and the conductive capacity of the first transparent connecting line is effectively improved.

Description

Display panel and display device

Technical Field

The present disclosure relates to display technologies, and particularly to a display panel and a display device.

Background

Currently, a display screen (also referred to as a display panel) in a display device is being developed in a large screen and full screen direction to provide a better visual experience for a user. In order to increase the screen ratio of the display device, a camera, an infrared sensor, a light sensor and other photosensitive devices may be disposed below the display panel.

For example, the display panel includes: a normal display portion and a light-transmissive display portion. The sub-Pixels are arranged in the normal display part and the light-transmitting display part, and the pixel density (PPI) of the normal display part is higher than that of the PPI of the light-transmitting display part, so that ambient light can enter the light-receiving surface of the photosensitive device through the light-transmitting display part. Therefore, the normal operation of the photosensitive device can be ensured under the condition that the screen occupation ratio of the display device is high.

However, the PPI of the light-transmissive display portion in the display panel is low, which results in poor display effect of the light-transmissive display portion and thus poor overall display effect of the display panel.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device, can solve the problem that the whole display effect of the display panel of the prior art is poor, technical scheme is as follows:

in one aspect, there is provided a display panel including: the display device comprises a substrate, a first display area and a second display area, wherein the substrate is provided with the first display area, and the second display area is positioned at the periphery of the first display area;

a plurality of first sub-pixels arranged in an array in the first display area;

a plurality of second sub-pixels arranged in an array and positioned in the second display area, wherein the area of the orthographic projection of the second sub-pixels on the substrate is larger than that of the orthographic projection of the first sub-pixels on the substrate;

the first transparent connecting lines are positioned in the first display area;

the first sub-pixels in one row in the first display area comprise at least two sub-pixel groups, each first sub-pixel in the sub-pixel groups is electrically connected through the first transparent connecting line, and each sub-pixel group is electrically connected with the second sub-pixels in the same row.

Optionally, the first target sub-pixels in each sub-pixel group close to the outer boundary of the first display area are electrically connected to the second sub-pixels in the same row.

Optionally, the display panel further includes: and the first target sub-pixel in at least one sub-pixel group is electrically connected with the second sub-pixels in one row through the switching signal lines.

Optionally, the display panel further includes: and one of the first signal connecting lines is used for being electrically connected with one row of the second sub-pixels, the first target sub-pixel of one of the at least two sub-pixel groups is connected with the first signal connecting line, and the first target sub-pixels of the other sub-pixel groups are connected with the first signal connecting line through the switching signal line.

Optionally, the transfer signal line is a signal line made of a transparent conductive material.

Optionally, the plurality of first transparent connecting lines are arranged in the same layer.

Optionally, the display panel further includes: the second transparent connecting lines are positioned in the first display area, are arranged on the same layer and are arranged in different layers with the first transparent connecting lines;

each first sub-pixel in a row of the first sub-pixels in the first display area is electrically connected through the second transparent connecting line, and the row of the first sub-pixels is electrically connected with a row of the second sub-pixels.

Optionally, the display panel further includes: and one of the second signal connecting lines is used for being electrically connected with the second sub-pixels in the same row, and the second signal connecting line is electrically connected with the second transparent connecting line at the junction of the first display area and the second display area.

Optionally, the display panel further includes: a pixel defining layer for defining a plurality of first pixel regions within the first display region and a plurality of second pixel regions within the second display region;

the first sub-pixel includes: a first light emitting device located in the first pixel region, the second sub-pixel including: a second light emitting device located in the second pixel region;

wherein an area of the first pixel region is smaller than an area of the second pixel region.

Optionally, a ratio of an area of the first pixel region to an area of the second display region is 1: 2.

Optionally, the pixel density of the plurality of first sub-pixels is equal to the pixel density of the plurality of second sub-pixels.

Optionally, the first sub-pixel further includes: and the first pixel driving circuits of any two adjacent first sub-pixels in the sub-pixel group are electrically connected through the first transparent connecting line.

Optionally, an orthographic projection of the first pixel driving circuit on the substrate and an orthographic projection of the first light emitting device on the substrate at least partially coincide.

Optionally, the second sub-pixel further includes: and a second pixel driving circuit electrically connected to the second light emitting device, each of the second pixel driving circuits in one row of the second sub-pixels being electrically connected through a first signal connection line.

In another aspect, there is provided a display device, the device including: the display panel comprises a photosensitive device and the display panel, wherein the photosensitive device is positioned on one side opposite to the display surface of the display panel, and the orthographic projection of the light receiving surface of the photosensitive device on the substrate is positioned in the first display area.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a display panel includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting lines, wherein the first sub-pixels, the second sub-pixels and the first transparent connecting lines are located on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is larger, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. In addition, the first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Like this, can effectual reduction first transparent connecting line's in the first display area wiring density for first transparent connecting line's width is great, and then has improved first transparent connecting line's conducting capacity, thereby has further improved the display effect in the first display area among the display panel. Therefore, the whole display effect of the display panel can be better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a partially enlarged view of a display panel;

FIG. 2 is a schematic diagram of the connection of a row of first sub-pixels in a first display area of the display panel shown in FIG. 1;

fig. 3 is a top view of a display panel provided in an embodiment of the present application;

FIG. 4 is a partial enlarged view of the display panel shown in FIG. 3 at A;

FIG. 5 is a schematic diagram of the connection of a row of first sub-pixels in a first display area of the display panel shown in FIG. 3;

FIG. 6 is a schematic diagram of a connection of a row of first sub-pixels to a row of second sub-pixels in a first display area of the display panel shown in FIG. 3;

FIG. 7 is a schematic connection diagram of a plurality of first sub-pixels within the first display area shown in FIG. 3;

FIG. 8 is a schematic diagram of a film layer structure of the display panel shown in FIG. 7 at B-B';

FIG. 9 is another schematic diagram of the connection of a row of first sub-pixels to a row of second sub-pixels in the first display area of the display panel shown in FIG. 3;

FIG. 10 is a schematic diagram of the film layer structure of the display panel shown in FIG. 9 at C-C';

fig. 11 is a circuit diagram of a pixel driving circuit provided in an embodiment of the present application;

fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 13 is a sectional view of the display device shown in fig. 12 at D-D'.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a partially enlarged view of a conventional display panel. The display panel has a first display area 00a and a second display area 00b located at the periphery of the first display area 00 a. Here, a portion of the display panel where the first display region 00a is located may be referred to as a light-transmitting display portion, and a portion of the display panel where the second display region 00b is located may be referred to as a normal display portion.

The display panel may include: a plurality of first sub-pixels 01 arranged in an array in the first display region 00a, and a plurality of second sub-pixels 02 arranged in an array in the second display region 00 b. Here, the display panel may further include: the substrate 03, the plurality of first subpixels 01, and the plurality of second subpixels 02 are located on the substrate 03. Wherein the area of the orthographic projection of the first sub-pixel 01 on the substrate 03 is equal to the area of the orthographic projection of the second sub-pixel 02 on the substrate 03.

In order to ensure that the transmittance of the first display area 00a in the display panel to the ambient light is relatively high, the distribution number of the first sub-pixels 01 in the first display area 00a needs to be reduced. Thus, the PPI of the first display 00a is less than the PPI of the second display 00 b. Therefore, the first display area 00a has a poor display effect, resulting in a poor overall display effect of the display panel.

As shown in fig. 2, fig. 2 is a schematic diagram illustrating connection of a row of first sub-pixels in a first display region of the display panel shown in fig. 1. In order to further improve the transmittance of the first display area 00a to ambient light, it is necessary to electrically connect every two adjacent first sub-pixels 01 in a row of first sub-pixels 01 by using the transparent connection line 04.

In addition, in order to ensure that each first subpixel 01 in the first subpixels 01 in the same row can access a plurality of different signals, it is necessary to ensure that any two adjacent first subpixels 01 are electrically connected through a plurality of transparent connection lines 04. However, when the respective first sub-pixels 01 in a row of the first sub-pixels 01 are electrically connected by the transparent connection lines 04, in the case where any two adjacent first sub-pixels 01 are electrically connected by the plurality of transparent connection lines 04, the wiring density of the transparent connection lines 04 in the first display region 00a is large. Thus, the width of the transparent connection line 04 is small, which results in a large resistance of the transparent connection line 04, and further results in a poor signal transmission capability of the transparent connection line 04. Thus, the display effect of the first display area 00a is further reduced.

Referring to fig. 3 and fig. 4, fig. 3 is a top view of a display panel according to an embodiment of the present disclosure, and fig. 4 is a partially enlarged view of the display panel shown in fig. 3 at a. The Display panel 000 may be an Organic Light Emitting Display (OLED) Display panel or an Active Matrix Organic Light Emitting Diode (AM-OLED) Display panel. When the display panel 000 is an OELD display panel or an AM-OLED display panel, the display panel 000 may be a top emission type display panel or a bottom emission type display panel.

The display panel 000 may include: the liquid crystal display device includes a substrate 100, and a plurality of first sub-pixels 200 arranged in an array, a plurality of second sub-pixels 300 arranged in an array, and a plurality of first transparent connecting lines 400 on the substrate 100. Note that the number of the plurality of first transparent connecting lines 400 is not shown in fig. 3 and 4, but is shown in fig. 5.

The substrate 100 has a first display area 100a and a second display area 100b located at the periphery of the first display area 100 a. Here, a portion of the display panel 000 where the first display region 100a is located may be referred to as a light-transmitting display portion, and a portion of the display panel 000 where the second display region 100b is located may be referred to as a normal display portion.

The plurality of first sub-pixels 200 arranged in an array in the display panel 000 may be located in the first display region 100a, and the plurality of second sub-pixels 300 arranged in an array in the display panel 000 may be located in the second display region 100 b.

Wherein the area of the orthographic projection of the second sub-pixel 300 on the substrate 100 is larger than the area of the orthographic projection of the first sub-pixel 200 on the substrate 100. Thus, the orthographic projection area of the first sub-pixels 200 on the substrate 100 is smaller, so that the number of the first sub-pixels 200 in the first display area 100a of the display panel 000 is larger, the PPI of the first display area 100a is effectively improved, and the display effect of the first display area 100a of the display panel 000 is better.

For example, the plurality of first sub-pixels 200 in the first display area 100a may include: red R1, green G1, and blue B1 subpixels; the plurality of second sub-pixels 300 in the second display area 100b may include: red sub-pixel R2, green sub-pixel G2, and blue sub-pixel B2. The area of the orthographic projection of the first sub-pixel 200 on the substrate 100 is smaller than the area of the orthographic projection of the second sub-pixel 300 on the substrate 100 in the present application means that: the area of the orthographic projection of a sub-pixel of a certain color in the first display area 100a on the substrate 100 is smaller than the area of the orthographic projection of a sub-pixel of the same color in the second display area 100b on the substrate 100. For example, the area of the orthographic projection of the red sub-pixel R1 in the first display area 100a on the substrate 100 is smaller than the area of the orthographic projection of the red sub-pixel R2 in the second display area 100b on the substrate 100.

In the embodiment of the present application, as shown in fig. 5, fig. 5 is a schematic diagram illustrating connection of a row of first sub-pixels in a first display area of the display panel shown in fig. 3. The plurality of first transparent connection lines 400 in the display panel 000 may be located within the first display region 100 a. Wherein, a row of the first sub-pixels 200 in the first display area 100a includes: at least two sub-pixel groups 200 a. The respective first sub-pixels 200 within each sub-pixel group 200a of the at least two sub-pixel groups 200a may be electrically connected by a first transparent connection line 400. For example, within the same sub-pixel group 200a, every two adjacent first sub-pixels 200 may be electrically connected by at least one first transparent connection line 400. Alternatively, the first transparent interconnection 400 may be made of a transparent conductive material such as Indium-Tin Oxide (ITO). Thus, the light transmittance of the first display region 100a can be ensured to be high.

As shown in fig. 6, fig. 6 is a schematic diagram illustrating a connection between a row of first sub-pixels and a row of second sub-pixels in the first display region of the display panel shown in fig. 3. Each of the at least two sub-pixel groups 200a may be electrically connected to the same row of second sub-pixels 300. For example, each sub-pixel group 200a may be electrically connected to the second sub-pixels 300 in the same row at the boundary of the display area 100 a. In this way, it can be ensured that the row of first sub-pixels 200 in the first display area 100a and the row of second sub-pixels 300 in the second display area 100b are electrically connected, so that the plurality of first sub-pixels 200 in the first display area 100a and the plurality of second sub-pixels 300 in the second display area 100b can emit light under the driving of the same driving chip.

In this case, the first sub-pixels 200 in the same row of the first sub-pixels 200 in the first display area 100a are not directly electrically connected by the first transparent connection line 400, but the first sub-pixels 200 in one row are grouped to obtain at least two sub-pixel groups 200a, and the first sub-pixels 200 in each sub-pixel group 200a are electrically connected by the first transparent connection line 400. In this way, the wiring density of the first transparent connecting lines 400 in the first display area 100a can be effectively reduced, so that the width of the first transparent connecting lines 400 is larger, and further the conductive capability of the first transparent connecting lines 400 is improved, thereby further improving the display effect of the first display area in the display panel 000.

To sum up, the display panel provided by the embodiment of the present application includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting lines, wherein the first sub-pixels, the second sub-pixels and the first transparent connecting lines are located on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is larger, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. In addition, the first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Therefore, the wiring density of the first transparent connecting lines in the first display area can be effectively reduced, the width of the first transparent connecting lines is large, the conductivity of the first transparent connecting lines is improved, and the display effect of the first display area in the display panel is further improved. Therefore, the whole display effect of the display panel can be better.

In the present embodiment, the pixel arrangement of the display panel 000 is RBGG. That is, as shown in fig. 3, one red sub-pixel R1, one blue sub-pixel B1, and two green sub-pixels G1 in the first display area 100a in the display panel 000 can constitute one pixel; one red sub-pixel R2, one blue sub-pixel B2, and two green sub-pixels G2 in the second display area 100B in the display panel 000 can constitute one pixel.

Alternatively, when the pixel arrangement of the display panel 000 is RBGG, as shown in fig. 4, each row of the first sub-pixels 200 in the first display area 100a of the display panel 000 may be divided into two sub-pixel groups 200 a. One of the two sub-pixel groups 200a includes a red sub-pixel R1 and a blue sub-pixel B1 in a row of the first sub-pixel 200, and the other includes a green sub-pixel G1 in a row of the first sub-pixel 200.

In the embodiment of the present application, as shown in fig. 6, in a row of first sub-pixels 200 in the first display area 100a, the first target sub-pixels in each sub-pixel group 200a close to the outer boundary of the first display area 100a are electrically connected to the same row of second sub-pixels 300. In this way, it is ensured that each sub-pixel group 200a in a row of first sub-pixels 200 can access the same row of second sub-pixels 300, so that the row of first sub-pixels 200 can be electrically connected with the row of second sub-pixels 300.

Optionally, as shown in fig. 6, the display panel 000 may further include: a plurality of patch signal lines 500. The first target subpixel in the at least one subpixel group 200a within the row of first subpixels 200 may be electrically connected to the row of second subpixels 300 through the transfer signal line 500.

For example, the display panel 000 may further include: a plurality of first signal connection lines 600. One first signal connection line 600 is used to electrically connect to one row of second sub-pixels 300. For example, the respective second sub-pixels 300 in a row of second sub-pixels 300 may be connected in series by at least one first signal connection line 600. For at least two sub-pixel groups 200a in the same row of the first sub-pixel 200, the first target sub-pixel of one sub-pixel group 200 in the at least two sub-pixel groups 200a may be directly electrically connected to the first signal connection line 600, and the first target sub-pixels of the other sub-pixel groups 200a may be electrically connected to the first signal connection line 600 through the transfer signal line 500.

In this case, when the first target subpixel of the subpixel group 200a is directly electrically connected to the first signal connection line 600, the first target subpixel of the subpixel group 200a may be connected in series with each second subpixel 300 in the row of second subpixels 300 through the first signal connection line 600; when the first target subpixel of the subpixel group 200a is electrically connected to the first signal connection line 600 through the transfer signal line 500, the first target subpixel of the subpixel group 200a may be connected in series to each of the second subpixels 300 in the row of the second subpixels 300 through the transfer signal line 500 and the first signal connection line 600. In this way, the signal transmitted in the first signal connection line 600 is split at the boundary between the first display area 100a and the second display area 100b to transmit the signal to each sub-pixel group 200a in a row of the first sub-pixels 200.

The connection between the transit signal line 500 and the first signal connection line 600 may be performed in two ways. In the first case, the transit signal line 500 may be directly electrically connected to the first signal connection line 600. In this case, since the conductive layer where the transit signal line 500 is located and the conductive layer where the first signal connection line 600 is located are not generally the same conductive layer, and an insulating layer is generally present therebetween, the transit signal line 500 may be electrically connected to the first signal connection line 600 through the via V1.

In the second case, the adapting signal line 500 can be electrically connected to the first transparent connecting line 400, and since the first transparent connecting line 400 can be electrically connected to the first signal connecting line 600 through the first target sub-pixel, the electrical connection between the adapting line 500 and the first signal connecting line 600 can be realized after the adapting line 500 is electrically connected to the first transparent connecting line 400. In this case, since the conductive layer where the transit signal line 500 is located and the conductive layer where the first transparent connection line 400 is located are not generally the same conductive layer, and an insulating layer is generally present therebetween, the transit signal line 500 may be electrically connected to the first transparent connection line 400 through the via hole V2.

In the embodiment of the present application, the wiring density of the first transparent connecting lines 400 in the first display area 100a is low. Accordingly, a plurality of the first transparent connection lines 400 may be arranged in the same layer wiring manner within the first display area 100 a. That is, the plurality of first transparent connecting lines 400 in the first display area 100a are disposed at the same layer. That is, the plurality of first transparent connecting lines 400 in the first display area 100a may be formed by using the same patterning process, wherein the one patterning process and the one patterning process in the following embodiments refer to: film deposition, photoresist coating, exposure, development, etching and photoresist stripping. Thus, the wiring difficulty and the manufacturing difficulty of the plurality of first transparent connecting lines 400 in the first display area 100a can be effectively reduced, and the manufacturing complexity of the display panel 000 is effectively simplified.

Alternatively, as shown in fig. 7, fig. 7 is a schematic connection diagram of a plurality of first sub-pixels in the first display region shown in fig. 3. The display panel 000 may further include: a plurality of second transparent connection lines 700. The plurality of second transparent connection lines 700 may be located in the first display area 100a, and the plurality of second transparent connection lines 700 are disposed in the same layer. That is, the plurality of second transparent connecting lines 700 in the first display area 100a may be formed by the same patterning process.

And, as shown in fig. 8, fig. 8 is a schematic diagram of a film layer structure of the display panel shown in fig. 7 at B-B'. The plurality of second transparent connection lines 700 are disposed in different layers from the plurality of first transparent connection lines 400. That is, the insulating layer 800 is present between the conductive layer where the plurality of second transparent connecting lines 700 are located and the conductive layer where the plurality of first transparent connecting lines 400 are located. Thus, the phenomenon of short circuit at the crossing position of the first transparent connecting line 700 and the second transparent connecting line 800 can be avoided.

Each of the first sub-pixels 200 in a column of the first sub-pixels 200 in the first display area 100a may be electrically connected by a second transparent connection line 700. For example, within the same column of first sub-pixels 200, every two adjacent first sub-pixels 200 may be electrically connected by at least one second transparent connection line 700. Also, a column of first sub-pixels 200 may be electrically connected to a column of second sub-pixels 300. For example, a column of first sub-pixels 200 may be electrically connected to a column of first sub-pixels 200 at a boundary of the first display area 100 a. In this way, it can be ensured that the first sub-pixels 200 in the first display area 100a and the second sub-pixels 300 in the second display area 100b are electrically connected, so that the plurality of first sub-pixels 200 in the first display area 100a and the plurality of second sub-pixels 300 in the second display area 100b can emit light under the driving of the same driving chip.

Alternatively, the second transparent connection line 700 may be made of a transparent conductive material of ITO. Thus, the light transmittance of the first display region 100a can be ensured to be high.

In the embodiment of the present application, as shown in fig. 9, fig. 9 is another schematic diagram of connection between a row of first sub-pixels and a row of second sub-pixels in the first display area of the display panel shown in fig. 3. The second target sub-pixel of the column of first sub-pixels 200 in the first display area 100a near the outer boundary of the first display area 100a is electrically connected to the column of second sub-pixels 300.

For example, the display panel 000 may further include: a plurality of second signal connection lines 900. One second signal connection line 900 is used to electrically connect to one column of second sub-pixels 300. For example, the respective second sub-pixels 300 in the column of electrically connected second sub-pixels 300 may be connected in series by at least one second signal connection line 900. The second target sub-pixels of a column of the first sub-pixels 200 in the first display area 100a may be directly electrically connected to the second signal connection lines 900.

Alternatively, as shown in fig. 7 and 10, fig. 10 is a schematic diagram of a film layer structure of the display panel shown in fig. 9 at C-C'. The display panel 000 may further include: the pixel defines a layer 1000. The pixel defining layer 1000 is used to define a plurality of first pixel regions 101 in the first display area 100a and a plurality of second pixel regions 102 in the second display area 100 b. The first subpixel 200 in the display panel 000 may include: a first light emitting device 201 positioned in the first pixel region 101. The second sub-pixel 300 in the display panel 000 may include: and a second light emitting device 301 positioned in the second pixel region 102. The area of the first pixel region 101 is smaller than that of the second pixel region 102, so that the area of the orthographic projection of the first sub-pixel 200 on the substrate 100 is ensured to be smaller than that of the orthographic projection of the second sub-pixel 300 on the substrate 100.

Illustratively, the ratio of the area of the first pixel region 101 to the area of the second pixel region 102 is 1: 2. In this case, the pixel density of the plurality of first sub-pixels 200 in the first display area 100a is the same as the pixel density of the plurality of second sub-pixels 300 in the second display area 100 b. That is, the number of the first subpixels 200 arranged in the same area is equal to the number of the second subpixels 300 arranged in the same area. In this way, the overall display effect of the display panel 000 can be effectively improved.

In the embodiment of the present application, as shown in fig. 7 and 10, the first sub-pixel 200 in the display panel 000 may further include: a first pixel driving circuit 202 connected to the first light emitting device 201. For example, for any one sub-pixel group 200a in a row of first sub-pixels 200, the first pixel driving circuits 202 of any two adjacent first sub-pixels 200 in the sub-pixel group 200a may be electrically connected through the first transparent connection line 400; for a column of first sub-pixels 200, the first pixel driving circuits 202 of any two adjacent first sub-pixels 200 in the column of first sub-pixels 200 may be electrically connected through the second transparent connection line 700.

Alternatively, as shown in fig. 7, an orthogonal projection of the first pixel driving circuit 202 on the substrate 100 at least partially coincides with an orthogonal projection of the first light emitting device 201 on the substrate 100. Since the first pixel driving circuit 202 is generally opaque, when the orthographic projection of the first pixel driving circuit 202 on the substrate 100 at least partially coincides with the orthographic projection of the first light emitting device 201 on the substrate 100, the light transmittance of the first display region 100a can be effectively improved.

In the embodiment of the present application, as shown in fig. 7 and 10, the second sub-pixel 300 in the display panel 000 may further include: and a second pixel driving circuit 302 connected to the second light emitting device 301. For example, for a row of second sub-pixels 300, each of the second pixel driving circuits 302 in the row of second sub-pixels 300 may be electrically connected through the first signal connection line 600; for a column of second sub-pixels 300, each of the second pixel driving circuits 302 in the column of second sub-pixels 300 can be electrically connected through the second signal connection line 900.

Optionally, the display panel 000 in the embodiment of the present application may further include: and the packaging layer 1100 is positioned on one sides of the first light-emitting device 201 and the second light-emitting device 301 far away from the substrate 100. The encapsulation layer 1100 is used for encapsulating the first light emitting device 201 and the second light emitting device 301, so as to prevent water and oxygen from entering the light emitting device in the display panel 000, and further improve the service life of the light emitting device.

It should be noted that there are various types of the transit signal line 500 in the above embodiments, and the embodiments of the present application are schematically described by taking the following two cases as examples:

in the first case, the transit signal line 500 may be a signal line made of a metal material. In this case, the conductive signal of the switching signal line 500 can be better, and the display effect of the first display area 100a can be ensured to be better. For example, the transit signal line 500 in this case may be disposed in the same layer as the second signal connection line 900, that is, the transit signal line 500 and the second signal connection line 900 are formed through the same patterning process.

In the second case, the transit signal line 500 may be a signal line made of a transparent conductive material. In this case, light transmittance at the boundary within the first display area 100a can be ensured to be good. For example, the transit signal line 500 in this case may be disposed in the same layer as the second transparent connection line 700, that is, the transit signal line 500 and the second transparent connection line 700 are formed through the same patterning process. Thus, the short circuit between the patch signal line 500 and the first transparent connecting line 400 at the crossing position can be avoided.

In the embodiment of the present application, the structures of the first pixel driving circuit 202 and the second pixel driving circuit 302 in the above-described embodiments may be the same. Illustratively, the first pixel drive circuit 202 and the second pixel drive circuit 302 may both be 7T1C drive circuits. That is, the first pixel driving circuit 202 and the second pixel driving circuit 302 are each configured by 7 transistors and 1 storage capacitor.

For example, as shown in fig. 11, fig. 11 is a circuit diagram of a pixel driving circuit provided in an embodiment of the present application. The pixel driving circuit may be the first pixel driving circuit 202 or the second pixel driving circuit 302. The pixel driving circuit may include: a first transistor T1, a second transistor T2, a driving transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor C. A first pole of the first transistor T1 is connected to the node N, and a second pole is connected to the initial signal terminal Vinit and the reset signal terminal RST; the first pole of the second transistor T2 is connected to the first pole of the driving transistor T3, and the second pole is connected to the node N; the grid is connected with a grid driving signal end Gate; the gate of the driving transistor T3 is connected to the node N; a first electrode of the fourth transistor T4 is connected to the data signal terminal Da, a second electrode thereof is connected to the second electrode of the driving transistor T3, and a Gate thereof is connected to the Gate driving signal terminal Gate; a first pole of the fifth transistor T5 is connected to the first power signal terminal VDD, a second pole is connected to the second pole of the driving transistor T3, and a gate is connected to the enable signal terminal EM; a first electrode of the sixth transistor T6 is connected to the first electrode of the driving transistor T3, and a gate electrode thereof is connected to the enable signal terminal EM; the seventh transistor T7 has a first pole connected to the initial signal terminal Vinit and a second pole connected to the second pole of the sixth transistor T6 and the reset signal terminal RST. The storage capacitor C is connected between the gate of the driving transistor T3 and the first power signal terminal VDD. The pixel driving circuit may be connected to the light emitting device OLED for driving the light emitting device OLED to emit light, and the light emitting device OLED may be connected between the second pole of the sixth transistor T6 and the second power source terminal VSS.

In the above-described embodiment, the respective second subpixels 300 in a row of second subpixels 300 may be connected in series by the plurality of first signal connection lines 600. The signals transmitted by the first signal connection lines 600 for connecting the second subpixels 300 in a row are different. For example, the number of the first signal connection lines 600 for connecting the second sub-pixels 300 in a row is four, which are: the reset control line RST, the initialization signal line Vinit, the enable signal line EM, and the Gate driving signal line Gate. In this case, four first transparent connection lines 400 need to pass between any two adjacent first subpixels 200 within the same subpixel group 200a in a row of first subpixels 200, and the four first transparent connection lines 400 are electrically connected to the reset control line RST, the initialization signal line Vinit, the enable signal line EM, and the Gate driving signal line Gate, respectively.

Each of the second sub-pixels 300 of a column of the second sub-pixels 300 may be connected in series by a plurality of first signal connection lines 600. The signals transmitted by the second signal connection lines 900 for connecting a column of the second sub-pixels 300 are different. For example, the number of the second signal connection lines 900 for connecting a column of the second sub-pixels 300 is two, which are: a first power signal line VDD and a data signal line Da. In this case, two second transparent connection lines 900 need to be passed between any two adjacent first sub-pixels 200 in a column of first sub-pixels 200, and the two first transparent connection lines 900 are electrically connected to the first power signal line VDD and the data signal line Da, respectively.

To sum up, the display panel provided by the embodiment of the present application includes: the display device comprises a substrate, a plurality of first sub-pixels arranged in an array, a plurality of second sub-pixels arranged in an array and a plurality of first transparent connecting lines, wherein the first sub-pixels, the second sub-pixels and the first transparent connecting lines are located on the substrate. Since the area of the orthographic projection of the first sub-pixel on the substrate is smaller than the area of the orthographic projection of the second sub-pixel on the substrate. Therefore, more first sub-pixels can be arranged in the first display area, so that the number of the first sub-pixels in the first display area is larger, the PPI of the first display area is effectively improved, and the display effect of the first display area in the display panel is better. In addition, the first sub-pixels in the same row in the first display area can be divided into at least two sub-pixel groups, and the first sub-pixels in each sub-pixel group can be electrically connected through the first transparent connecting line. Like this, can effectual reduction first transparent connecting line's in the first display area wiring density for first transparent connecting line's width is great, and then has improved first transparent connecting line's conducting capacity, thereby has further improved the display effect in the first display area among the display panel. Therefore, the whole display effect of the display panel can be better.

The embodiment of the present application further provides a display device, and the display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

Illustratively, as shown in fig. 12 and 13, fig. 12 is a schematic structural diagram of a display device provided in an embodiment of the present application, and fig. 13 is a cross-sectional view of the display device shown in fig. 12 at D-D'. The display device may include: a display panel 000, and the structure of the display panel 000 may be the display panel in the above embodiment.

The display device may have a first display area 100a and a second display area 100 b. The shape of the first display area 100a may be a circle, an ellipse, or two ellipses arranged in parallel, which is not limited in the embodiments of the present application.

In an embodiment of the present application, the display device may further include: the photosensitive device 001. The photosensitive device 001 may be an image sensor, a light sensor, a distance sensor, or the like in a camera. The light sensing device 001 is located at a side opposite to the display surface of the display panel 000. Wherein, the orthographic projection of the light sensing surface 001a of the light sensing device 001 on the display panel is located in the first display area 100 a. Because the light transmittance of the first display region 101 is better, external ambient light can normally enter the light receiving surface 001a of the light sensing device 001 after passing through the first display region 100a, so that the light sensing device 001 can normally operate.

It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or there can be more than one intermediate layer or element. Like reference numerals refer to like elements throughout.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims

1. A display panel, comprising:

the display device comprises a substrate, a first display area and a second display area, wherein the substrate is provided with the first display area, and the second display area is positioned at the periphery of the first display area;

a plurality of first sub-pixels arranged in an array in the first display area;

2. The display panel according to claim 1, wherein the first target sub-pixels in each of the sub-pixel groups near the outer boundary of the first display region are electrically connected to the second sub-pixels in the same row.

3. The display panel according to claim 2, characterized in that the display panel further comprises: and the first target sub-pixel in at least one sub-pixel group is electrically connected with the second sub-pixels in one row through the switching signal lines.

4. The display panel according to claim 3, characterized in that the display panel further comprises: and one of the first signal connecting lines is used for being electrically connected with one row of the second sub-pixels, the first target sub-pixel of one of the at least two sub-pixel groups is connected with the first signal connecting line, and the first target sub-pixels of the other sub-pixel groups are connected with the first signal connecting line through the switching signal line.

5. The display panel according to claim 3, wherein the transfer signal line is a signal line made of a transparent conductive material.

6. The display panel according to claim 1, wherein the plurality of first transparent connecting lines are disposed in the same layer.

7. The display panel according to claim 6, characterized in that the display panel further comprises: the second transparent connecting lines are positioned in the first display area, are arranged on the same layer and are arranged in different layers with the first transparent connecting lines;

8. The display panel according to claim 7, characterized by further comprising: and one of the second signal connecting lines is used for being electrically connected with the second sub-pixels in the same row, and the second signal connecting line is electrically connected with the second transparent connecting line at the junction of the first display area and the second display area.

9. The display panel according to any one of claims 1 to 8, characterized by further comprising: a pixel defining layer for defining a plurality of first pixel regions within the first display region and a plurality of second pixel regions within the second display region;

10. The display panel according to claim 9, wherein a ratio of an area of the first pixel region to an area of the second display region is 1: 2.

11. The display panel according to claim 10, wherein a pixel density of the plurality of first sub-pixels is equal to a pixel density of the plurality of second sub-pixels.

12. The display panel of claim 9, wherein the first sub-pixel further comprises: and the first pixel driving circuits of any two adjacent first sub-pixels in the sub-pixel group are electrically connected through the first transparent connecting line.

13. The display panel of claim 12, wherein an orthographic projection of the first pixel driving circuit on the substrate at least partially coincides with an orthographic projection of the first light emitting device on the substrate.

14. The display panel according to claim 9, wherein the second subpixel further comprises: and a second pixel driving circuit electrically connected to the second light emitting device, each of the second pixel driving circuits in one row of the second sub-pixels being electrically connected through a first signal connection line.

15. A display device, comprising: a light sensing device and the display panel of any one of claims 1 to 14, the light sensing device being located on a side opposite to a display surface of the display panel, and an orthographic projection of a light receiving surface of the light sensing device on the substrate being located in the first display region.