CN113764501A

CN113764501A - Display panel and display device

Info

Publication number: CN113764501A
Application number: CN202111151803.3A
Authority: CN
Inventors: 黄耀; 黄炜赟; 徐元杰; 秦向东; 王本莲; 杜丽丽
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: 2021-09-29
Filing date: 2021-09-29
Publication date: 2021-12-07

Abstract

The application discloses display panel and display device belongs to and shows technical field. The display panel includes: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area on a substrate, a plurality of first pixel driving circuits positioned in a transition display area and a plurality of transparent signal lines. Since at least three light emitting device groups in at least one row of first light emitting devices are respectively in one-to-one correspondence with at least three rows of first pixel driving circuits distributed around the light-transmitting display region, the first light emitting devices in one light emitting device group are electrically connected with the corresponding row of first pixel driving circuits through transparent signal lines, that is, the extending directions of the transparent signal lines connected with the light emitting devices in at least three light emitting device groups in one row of first light emitting devices may be different. Therefore, the length of the transparent signal line connecting the first light emitting device and the first pixel driving circuit is short. When the light-transmitting display area displays a picture with low gray scale, the first light-emitting device responds faster, and the display effect of the light-transmitting display area is better.

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

At present, with the development of display technology, in order to improve the screen occupation ratio of a display device, a camera in the display device needs to be placed below a display panel, and it is necessary to ensure that an area of the display panel directly opposite to the camera can still display a picture.

The display panel may include: a normal display portion, a transitional display portion, and a light-transmissive display portion. Only the light emitting device is provided in the light-transmitting display portion, and a pixel driving circuit electrically connected to the light emitting device in the light-transmitting display portion may be provided in the transitional display portion. Because the resolution ratio of the light-transmitting display part is lower, and only the light-emitting device is arranged in the light-transmitting display part, ambient light can penetrate through the light-transmitting display part and enter the light-receiving surface of the camera. Therefore, the camera can be ensured to work normally under the condition that the screen of the display device is high in occupied ratio.

However, when the display portion of the transparent display area in the display panel displays a low gray scale image, the display effect of the display portion of the transparent display area is poor.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device. The technical scheme is as follows:

according to a first aspect of the present application, there is provided a display panel including:

a substrate having a light transmissive display region, and a transitional display region located at a periphery of the light transmissive display region,

the first light-emitting devices are positioned in the light-transmitting display area and are arranged in a plurality of arrays;

a plurality of first pixel driving circuits arranged in an array manner and positioned in the transitional display area;

and, a plurality of transparent signal lines;

wherein each of the at least one row of the first light emitting devices comprises: the M light emitting device groups correspond to the M rows of first pixel driving circuits one by one, the first light emitting devices in one light emitting device group are electrically connected with one row of corresponding first pixel driving circuits through the transparent signal lines, and the M rows of first pixel driving circuits are distributed around the light-transmitting display area;

and M is an integer greater than or equal to 3.

Optionally, the transparent display area has N first sub-partitions, the transition display area has N second sub-partitions distributed around the transparent display area, and N is greater than or equal to M;

the M light emitting device groups are respectively positioned in the M first sub-partitions, the M rows of first pixel driving circuits are respectively positioned in the M second sub-partitions, and the first sub-partition where one light emitting device group is positioned is connected with the second sub-partition where the corresponding row of first pixel driving circuits is positioned.

Optionally, the areas of the N first sub-partitions are the same.

Optionally, N is equal to 4, and the first sub-partition is triangular or fan-shaped.

Optionally, the N first sub-partitions correspond to the N second sub-partitions one to one, and the first sub-partitions are connected to the corresponding second sub-partitions;

and one part of the transparent signal line is positioned in one first sub-partition and is electrically connected with the first light-emitting device in the first sub-partition, and the other part of the transparent signal line is positioned in the corresponding second sub-partition and is electrically connected with the first pixel driving circuit in the second sub-partition.

Optionally, the display panel further includes: the plurality of second pixel driving circuits are arranged in an array mode and are positioned in the transitional display area, and the plurality of second light emitting devices are arranged in an array mode and are electrically connected with the plurality of second light emitting devices in a one-to-one correspondence mode;

wherein the arrangement density of the plurality of second light emitting devices is the same as the arrangement density of the plurality of first light emitting devices.

Optionally, the display panel further includes: the first signal lines are electrically connected with a column of second light-emitting devices through a column of second pixel driving circuits, and the first transfer lines are electrically connected with a column of first light-emitting devices through a column of first pixel driving circuits and the transparent signal lines;

the plurality of first signal lines are electrically connected with the plurality of first transfer lines in a one-to-one correspondence manner, and the row of second light-emitting devices connected with one first signal line is arranged in a row with the row of first light-emitting devices connected with the corresponding one first transfer line.

Optionally, the first junction line includes: the first pixel driving circuit comprises a connecting wire and a jumper wire, wherein the connecting wire is electrically connected with the first pixel driving circuit, and the jumper wire is electrically connected with the connecting wire;

the connecting line and the jumper line are arranged in different layers, and the connecting line and the first signal line are usually arranged.

Optionally, the display panel further includes: the second signal lines are electrically connected with a row of second light-emitting devices through a row of second pixel driving circuits, and the second patch lines are electrically connected with a row of second light-emitting devices through a row of first pixel driving circuits and a plurality of transparent signal lines;

the plurality of second signal lines are electrically connected with the plurality of second patch cords in a one-to-one correspondence manner, and the row of second light-emitting devices connected with one second signal line is arranged in a row with the row of first light-emitting devices connected with the corresponding second patch cord.

Optionally, an extending direction of the second signal line is parallel to an extending direction of the second patch cord, and the display panel further includes: and the second signal line is electrically connected with the corresponding second patch cord through the same gate drive GOA circuit.

Optionally, the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are uniformly distributed in the transitional display area, and the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are distributed in a staggered manner.

Optionally, in the row direction of the second pixel driving circuit, the ratio of the number of the first pixel driving circuits to the number of the second pixel driving circuits is 4: 1;

in the column direction of the second pixel driving circuit, the ratio of the number of the first pixel driving circuits to the number of the second pixel driving circuits is 2: 1.

optionally, the substrate further has a normal display area located at a periphery of the transitional display area, and the display panel further includes: a plurality of third pixel driving circuits arranged in an array and a plurality of third light emitting devices arranged in an array are positioned in the normal display area, and the plurality of third pixel driving circuits are electrically connected with the plurality of third light emitting devices in a one-to-one correspondence manner;

wherein the orthographic projection areas of the first pixel driving circuit, the second pixel driving circuit and the third pixel driving circuit on the substrate are the same.

Optionally, the display panel further includes: the plurality of virtual pixel driving circuits, the first pixel driving circuit, the second pixel driving circuit and the third pixel driving circuit are uniformly distributed on the substrate.

According to another aspect of the present application, there is provided a display device including: the display panel comprises a photosensitive sensor and the display panel, wherein the orthographic projection of a light receiving surface of the photosensitive sensor on the substrate is positioned in the light-transmitting display area.

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

provided is a display panel including: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area on a substrate, a plurality of first pixel driving circuits positioned in a transition display area and a plurality of transparent signal lines. Since at least three light emitting device groups in at least one row of first light emitting devices are respectively in one-to-one correspondence with at least three rows of first pixel driving circuits distributed around the light-transmitting display region, the first light emitting devices in one light emitting device group are electrically connected with the corresponding row of first pixel driving circuits through transparent signal lines, that is, the extending directions of the transparent signal lines connected with the light emitting devices in at least three light emitting device groups in one row of first light emitting devices may be different. Therefore, the length of the transparent signal line connecting the first light emitting device and the first pixel driving circuit is short. When the light-transmitting display area displays a picture with low gray scale, the first light-emitting device responds faster, and the display effect of the light-transmitting display area is 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 schematic diagram of a display panel;

fig. 2 is a partially enlarged view of a first display region in the display panel shown in fig. 1;

FIG. 3 is a partially enlarged schematic view of a transitional display region in the display panel shown in FIG. 1;

fig. 4 is a top view of a display panel provided in an embodiment of the present application;

FIG. 5 is a schematic view of a partial pixel arrangement of the display panel shown in FIG. 4;

FIG. 6 is an enlarged schematic view of the transmissive display region and the transitional display region of the display panel shown in FIG. 4;

FIG. 7 is a partially enlarged schematic view of a transitional display region in the display panel shown in FIG. 4;

FIG. 8 is a schematic diagram of a pixel driving circuit according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of another display panel provided in the embodiment of the present application.

With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

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.

At present, in order to increase the screen ratio of the display device, the display panel in the display device may be designed as a partially light-transmissive display panel. For example, the display panel has: normal display area, transition display area and printing opacity display area. Pixels are arranged in the non-light-transmitting normal display area, the transition display area and the light-transmitting display area, so that the non-light-transmitting normal display area, the transition display area and the light-transmitting display area can display pictures.

A light-sensitive sensor (e.g., an image sensor, an infrared sensor, a distance sensor, or the like in a camera) in the display device is located on a side opposite to a display surface of the display panel, and an orthogonal projection of the light-sensitive surface of the light-sensitive sensor on the display panel is located in the light-transmissive display region. The normal display area usually has a higher pixel density (PPI) than the PPI of the light-transmissive display area, so that ambient light can enter the light-receiving surface of the photosensor through the light-transmissive display area. Therefore, the normal work of the photosensitive sensor can be ensured under the condition that the screen occupation ratio of the display device is high.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional display panel. The display panel includes: a first display region 11, and a second display region 12 located at the periphery of the first display region 11. Wherein the resolution of the first display area 11 is lower than the resolution of the second display area 12. The first display area 11 may include: a light transmissive display region 111 and a non-light transmissive transitional display region 112.

As shown in fig. 2, fig. 2 is a partially enlarged view of a first display region in the display panel shown in fig. 1. Only the first light emitting device 1111 is disposed in the light-transmitting display region 111 (the block E1 shown in fig. 2 indicates one first light emitting device), and the first pixel driving circuit 1121 (the block D1 shown in fig. 2 indicates one first pixel driving circuit) electrically connected to the first light emitting device may be disposed in the transitional display region 112. Each of the first light emitting devices 1111 and the corresponding electrically connected first pixel driving circuits 1121 of the same row form a first pixel unit, and the first display region 11 includes not only a plurality of first pixel units but also a plurality of second pixel units located in the transitional display region 112 (the block P2 shown in fig. 2 represents a second pixel unit). Because the resolution of the light-transmitting display region 111 is low, and only the light-emitting device 1111 is disposed in the light-transmitting display region 111, ambient light can enter the light-receiving surface of the camera through the light-transmitting display region.

In order to further improve the light transmittance of the light-transmitting display region 111, the transparent signal line 13 is required to connect the first light-emitting device 1111 in the light-transmitting display region 111 and the first pixel driving circuit 1121 in the transitional display region 112.

Referring to fig. 3, fig. 3 is a partially enlarged schematic view of a transition display area in the display panel shown in fig. 1. The second pixel unit in the transitional display area 112 includes a second light emitting device 1122 (one second light emitting device is indicated by a block E2 shown in fig. 3) and a second pixel driving circuit 1123 (one second pixel driving circuit is indicated by a block D2 shown in fig. 3). It should be noted that, for convenience of understanding and clearer illustration of the corresponding relationship between the second light emitting device 1122 and the second pixel driving circuit 1122, the second light emitting device 1122 and the second pixel driving circuit 1122 in fig. 3 are not overlapped, and in actual situations, there is at least partial overlap of the orthographic projections of the second light emitting device 1122 and the second pixel driving circuit 1122 on the substrate of the display panel.

The first pixel driving circuits 1121 and the second pixel driving circuits 1123 are interlaced and uniformly distributed in the transitional display area 112, and the second light emitting devices 1122 are uniformly distributed in the transitional display area 112.

It can be understood that by adjusting the structures of the first pixel driving circuit 1121 and the second pixel driving circuit 1123 in the transitional display area 112 to be narrowed in the lateral direction while the longitudinal height remains unchanged, it is equivalent to laterally compressing the pixel arrangement of the first pixel driving circuit 1121 and the second pixel driving circuit 1123 without changing the structure and position of the second light emitting device 1122. In this way, more pixel driving circuits can be distributed at the original position of the transitional display area 112. The second light emitting device 1122 in the transitional display area 112 may also be connected to the corresponding second pixel driving circuit 1123, thereby ensuring that the second light emitting device 1122 located at the original position displays normally. Among the compressed pixel circuits, the pixel driving circuit not connected to the second light emitting device 1122 belongs to the first pixel driving circuit 1121, and may be electrically connected to the first light emitting device in the light transmissive display region through a transparent signal line.

However, the first light emitting devices 1111 in the light-transmitting display region 111 of the conventional display panel are usually electrically connected to the first pixel driving circuits 1121 in the non-light-transmitting transition display regions 112 at the left and right sides of the light-transmitting display region 111, so that in at least one row of the first light emitting devices 1111 in the light-transmitting display region 111, the number of light emitting devices connected to the first pixel driving circuits 1121 in the same row outside the light-transmitting display region 111 is larger, and thus, a part of the first light emitting devices 1111 needs to be connected to the first pixel driving circuits 1121 at a longer distance, and further, a part of the transparent signal lines 13 for connecting the first light emitting devices 1111 and the first pixel driving circuits 1121 is longer. When the transparent signal line 13 is long, the parasitic capacitance on the transparent signal line 13 is large, and the first light emitting device 1111 needs to be activated only by charging the transparent signal line 13 when the driving current from the first pixel driving circuit 1121 drives the first light emitting device 1111. Since the driving current of the low gray scale is small, the charging time of the transparent signal line 13 is long, the image response rate of the low gray scale is low, and the display effect of the transparent display region 111 is poor.

The embodiment of the application provides a display panel and a display device, which can solve the problems existing in the related art.

Fig. 4 is a top view of a display panel according to an embodiment of the present disclosure, and fig. 5 is a schematic diagram of a partial pixel arrangement of the display panel shown in fig. 4. The display panel may include: a substrate 21, a plurality of first light emitting devices 22 (one first light emitting device is indicated by a block E1 shown in fig. 5), a plurality of first pixel driving circuits 23 (one first pixel driving circuit is indicated by a block D1 shown in fig. 5), and a plurality of transparent signal lines 24 on the substrate 21.

The substrate 21 may have a light-transmissive display region 211, and a transitional display region 212 located at the periphery of the light-transmissive display region 211. The plurality of first light emitting devices 22 arranged in an array are located in the light-transmitting display region 211; the plurality of first pixel driving circuits 23 arranged in an array are located in the transitional display area 212.

It should be noted that the number of the first pixel driving circuits 23 in the transitional display region 212 is greater than or equal to the number of the first light emitting devices 22 in the light-transmitting display region 211. Each of the first light emitting devices 22 may be electrically connected to one of the first pixel driving circuits 23 through a transparent signal line 24. Thus, each of the first pixel driving circuits 23 can drive one of the first light emitting devices 22 to emit light.

In the embodiment of the present application, the first Light Emitting device 22 may be an Organic Light-Emitting Diode (OLED). It may include: an anode, a light-emitting layer, and a cathode are stacked in a direction perpendicular to and away from the substrate 21. Wherein the anode in the first light emitting device 22 may be electrically connected to the first pixel driving circuit 23.

Wherein each row of the at least one row of first light emitting devices 22 comprises: m light emitting device groups (for ease of understanding, three light emitting

device groups

22a, 22b, and 22c are illustrated in fig. 5, and each row of the first light emitting devices 22 may further include more light emitting device groups, which is not limited in this embodiment of the application). The M light emitting device groups (22a, 22b, and 22c) are in one-to-one correspondence with the M rows of first pixel driving circuits 23, the first light emitting devices 22 in one light emitting device group are electrically connected to the corresponding row of first pixel driving circuits 23 through transparent signal lines 24, and the M rows of first pixel driving circuits 23 are distributed around the light-transmitting display region 211. Different groups of light emitting devices in a row of first light emitting devices 22 may correspond to different rows of first pixel driving circuits. M is an integer greater than or equal to 3.

Therefore, the number of the first pixel driving circuits 23 connected to the same row outside the light-transmitting display region 211 in at least one row of the first light-emitting devices 22 in the light-transmitting display region 211 is smaller, so that part of the first light-emitting devices 22 can be connected with the first pixel driving circuits 23 at a closer distance, and further the length of the part of the transparent signal lines 24 for connecting the first light-emitting devices 22 and the first pixel driving circuits 23 is shorter, so as to reduce the parasitic capacitance on the transparent signal lines 13, so that the reaction rate of the light-transmitting display region 211 in displaying a low gray scale image can be increased, and further the display effect of the light-transmitting display region 211 can be improved.

In summary, the present application provides a display panel, including: the display device comprises a plurality of first light-emitting devices positioned in a light-transmitting display area on a substrate, a plurality of first pixel driving circuits positioned in a transition display area and a plurality of transparent signal lines. Since at least three light emitting device groups in at least one row of first light emitting devices are respectively in one-to-one correspondence with at least three rows of first pixel driving circuits distributed around the light-transmitting display region, the first light emitting devices in one light emitting device group are electrically connected with the corresponding row of first pixel driving circuits through transparent signal lines, that is, the extending directions of the transparent signal lines connected with the light emitting devices in at least three light emitting device groups in one row of first light emitting devices may be different. Therefore, the length of the transparent signal line connecting the first light emitting device and the first pixel driving circuit is short. When the light-transmitting display area displays a picture with low gray scale, the first light-emitting device responds faster, and the display effect of the light-transmitting display area is better.

Optionally, as shown in fig. 5, the transparent display region 211 has N first sub-partitions 2111, and the transitional display region 212 has N second sub-partitions 2121 distributed around the transparent display region 211, where N is greater than or equal to M.

The M light emitting device groups are respectively located in the M first sub-partitions 2111, the M rows of first pixel driving circuits 23 are respectively located in the M second sub-partitions 2121, and the first sub-partition 2111 where one light emitting device group is located is connected to the second sub-partition 2121 where the corresponding row of first pixel driving circuits 23 is located. As such, the M light emitting device groups located in different first sub-divisions 2111 may be respectively connected to the first pixel driving circuits 23 located in different second sub-divisions 2121.

In fig. 5, the embodiment of the present application is schematically illustrated by taking the light-transmitting display region 211 as a square as an example. In other alternative implementations, the light-transmitting display region 211 may also be in a shape of a circle, a hexagon, or the like, which is not limited by the embodiment of the present application.

Alternatively, as shown in fig. 5, the areas of the N first sub-divisions 2111 are all the same. The number of the first light emitting devices 22 in the N first sub-partitions 2111 can be substantially the same, so that the difference between the lengths of the transparent connection lines 24 corresponding to the first light emitting devices 22 in the N first sub-partitions 2111 is smaller, and the brightness of the first light emitting devices 22 in the light-transmitting display region 211 is uniform, so as to improve the display effect of the light-transmitting display region 211.

Alternatively, N is equal to 4, and the first sub-partition 2111 may be triangular or fan-shaped. When the shape of the light-transmissive display region 211 is a rectangle, the shape of the first sub-partition 2111 may be a triangle; when the shape of the light-transmissive display region 211 is a circle, the shape of the first sub-partition 2111 may be a fan shape. That is, the N first sub-divisions 2111 may be disposed around the center of the light-transmissive display region 211, which may refer to the intersection point or center of two diagonal lines of the light-transmissive display region 211.

Optionally, the N first sub-partitions 2111 correspond to the N second sub-partitions 2121 one to one, and the first sub-partitions 2111 are connected to the corresponding second sub-partitions 2121. That is, at least a part of the edge of the first sub-partition 2111 coincides with at least a part of the edge of the corresponding second sub-partition 2121, and the first sub-partition 2111 and the corresponding second sub-partition 2121 are two adjacent regions.

Among them, a part of the transparent signal lines 24 is located in one first sub-partition 2111 and electrically connected to the first light emitting devices 22 in the first sub-partition 2111, and another part is located in the corresponding second sub-partition 2121 and electrically connected to the first pixel driving circuits 23 in the second sub-partition 2121.

Alternatively, as shown in fig. 6, fig. 6 is an enlarged schematic view of the transmissive display region and the transitional display region of the display panel shown in fig. 4. The display panel further includes: a plurality of second pixel driving circuits 25 arranged in an array (block D2 shown in fig. 6 indicates one second pixel driving circuit) and a plurality of second light emitting devices (not shown in fig. 6) arranged in an array, wherein the plurality of second pixel driving circuits 25 are electrically connected to the plurality of second light emitting devices in a one-to-one correspondence. The second pixel driving circuit 25 is for driving the second light emitting device to emit light. Wherein the arrangement density of the plurality of second light emitting devices is the same as the arrangement density of the plurality of first light emitting devices 22. The display effects of the transitional display region 212 and the light-transmissive display region 211 can be made close.

Referring to fig. 7, fig. 7 is a partially enlarged schematic view of a transition display area in the display panel shown in fig. 4. The second pixel cell in the transitional display area 212 includes the second light emitting device 26 (one second light emitting device is indicated by a block E2 shown in fig. 7) and the second pixel driving circuit 25 (one second pixel driving circuit is indicated by a block D2 shown in fig. 7). It should be noted that, for the convenience of understanding and more clearly showing the corresponding relationship between the second light emitting device 26 and the second pixel driving circuit 25, the second light emitting device 26 and the second pixel driving circuit 25 in fig. 6 are not overlapped, and only a part of the second light emitting device 26 is shown in fig. 7, in actual situations, there is at least partial overlap in the orthographic projections of the second light emitting device 26 and the second pixel driving circuit 25 on the substrate of the display panel.

In the embodiment of the present application, as shown in fig. 7, the first pixel driving circuits 23 and the second pixel driving circuits 25 are staggered and uniformly distributed in the transitional display area 212, and the second light emitting devices 26 are uniformly distributed in the transitional display area 112.

It can be understood that, first, by adjusting the structures of the first pixel driving circuit 23 and the second pixel driving circuit 25 in the transitional display area 212 to be narrowed in the transverse direction (the row direction of the second pixel driving circuit) while the longitudinal height is kept unchanged, it is equivalent to transversely compressing the pixel arrangement of the first pixel driving circuit 23 and the second pixel driving circuit 25 without changing the structure and the position of the second light emitting device. Next, by adjusting the structures of the first pixel driving circuit 23 and the second pixel driving circuit 25 in the transition display area 212 to be narrower in the longitudinal direction (column direction) while the lateral width is kept unchanged, it is equivalent to longitudinally compressing the pixel arrangement of the first pixel driving circuit 23 and the second pixel driving circuit 25 without changing the structure and position of the second light emitting device. In this way, more pixel driving circuits can be distributed at the original position of the transitional display area 212. The second light emitting devices 26 in the transition display region 212 may also be connected to the corresponding second pixel driving circuit 25, so as to ensure that the second light emitting devices 26 in the original position display normally. Among the compressed pixel circuits, at least a part of the pixel driving circuits in the pixel driving circuits not connected to the second light emitting device 26 belongs to the first pixel driving circuit 23, and may be electrically connected to the first light emitting device in the light transmissive display region through a transparent signal line.

For example, as shown in fig. 8, fig. 8 is a schematic diagram of compressing a pixel driving circuit according to an embodiment of the present application. In the same area on the substrate, before compression, the area may be distributed with 8 pixel driving circuits, and after compression, the area may be distributed with 15 pixel driving circuits.

In an embodiment of the present application, the second light emitting device may be an OLED light emitting device.

Optionally, as shown in fig. 6, the display panel further includes: a plurality of first signal lines 27 and a plurality of first transfer lines 28, the first signal lines 27 being electrically connected to a column of the second light emitting devices through a column of the second pixel driving circuits 25, the first transfer lines 28 being electrically connected to a column of the first light emitting devices 22 through a column of the first pixel driving circuits 23 and a plurality of transparent signal lines 24.

The first signal lines 27 are electrically connected to the first transfer lines 28 in a one-to-one correspondence manner, and a row of the second light emitting devices connected to one first signal line 27 and a row of the first light emitting devices 22 connected to the corresponding first transfer line 28 are arranged in a row. The plurality of first signal lines 27 may be all located outside the light-transmissive display region 211. Illustratively, one first signal line 27 may be electrically connected to one column of the first pixel driving circuits 23.

Optionally, the first signal line 27 may also be electrically connected to the at least one first light emitting device 22 through the at least one first pixel driving circuit 23 and the at least one transparent signal line 24.

Note that the first signal line 27 in the embodiment of the present application may be a Data line (Data) or a power supply signal line (VDD). The first signal line 27 may supply a driving signal to the first light emitting device 22 through the first pixel driving circuit 23 so that the first light emitting device 22 emits light. The first signal line 27 may also provide a driving signal for a second light emitting device located in the same column as the first light emitting device 22. That is, the first signal line 27 may provide a driving signal to the first light emitting device 22 and the second light emitting device located in the same column.

The first signal line 27 may refer to a signal line having an extending direction overlapping with the light-transmitting display region 211. The display panel further comprises a third signal line, the third signal line is parallel to the extending direction of the first signal line, the extending direction of the third signal line is not overlapped with the light-transmitting display area, and the third signal line can provide a driving signal for the second light-emitting device.

The first light emitting device 22 connected through the first signal line 27 and the first light emitting device 22 connected through the first patch line 28 belong to two light emitting device groups, respectively. That is, the first light emitting device 22 directly connected to the first signal line 27 may belong to one light emitting device group 22b through the transparent signal line 24 and the first pixel driving circuit 22. And the first light emitting device 22 connected to the first signal line 27 may belong to another light emitting device group 22a through the transparent signal line 24, the first pixel driving circuit 22, and the first transfer line 28.

The first signal lines respectively connected to the first light emitting devices in the two light emitting device groups are two different first signal lines.

The first junction line 28 may include: a connection line 281 for electrically connecting with the first pixel driving circuit 22, and a jumper line 282 electrically connected with the connection line 281, the first transfer line 28 being electrically connected with the corresponding first signal line 27 through the jumper line 282.

The connecting line 281 and the jumper line 282 are disposed in different layers, and the connecting line 281 may be disposed in the same layer as the first signal line 27. In this way, the crossover 282 in the first transfer line 28 is prevented from crossing and shorting with the other first signal lines 27 at the crossing positions. For example, in order to reduce the complexity of the display panel, the jumper line 282 may be disposed on the same layer as the second signal line 29.

Optionally, the display panel further includes: a plurality of second signal lines 29 and a plurality of second patch lines 31, the second signal lines 29 being electrically connected to a row of second light emitting devices 26 through a row of second pixel driving circuits 25, the second patch lines 31 being electrically connected to a row of second light emitting devices through a row of first pixel driving circuits 23 and a plurality of transparent signal lines 24.

The second signal lines 29 are electrically connected to the second patch cords 31 in a one-to-one correspondence, and a row of second light emitting devices connected to one second signal line 29 and a row of first light emitting devices 22 connected to the corresponding second patch cord 31 are arranged in a row. That is, the second signal line 29 may provide a driving signal to the first light emitting device 22 and the second light emitting device located in the same row.

Note that the second signal line 29 in the embodiment of the present application may be at least one of a Gate driving signal line (Gate), a reset control line (RST), an initialization signal line (Vinit), and an enable signal line (EM). The second signal line 29 may supply a driving signal to the first light emitting device 22 through the first pixel driving circuit 23 so that the first light emitting device 22 emits light.

Optionally, the second signal line 29 may also be electrically connected to the at least one first light emitting device 22 through the at least one first pixel driving circuit 23 and the at least one transparent signal line 24.

The second signal line 29 may also be electrically connected to the at least one first light emitting device 22 through the at least one first pixel driving circuit 23 and the at least one transparent signal line 24. The first light-emitting device 22 connected via the second signal line 29 and the first light-emitting device connected via the second patch line 31 belong to two light-emitting device groups, respectively. That is, the first light emitting device 22 directly connected to the second signal line 29 may belong to one light emitting device group 22c through the transparent signal line 24 and the first pixel driving circuit 22. And the first light emitting device 22 connected to the second signal line 29 may belong to another light emitting device group 22b through the transparent signal line 24, the first pixel driving circuit 22, and the second patch line 31.

In this way, the first light emitting device and the second light emitting device in the same row or the same column on the display panel can receive the same control signal at the same time, so as to improve the uniformity of the display panel.

Optionally, as shown in fig. 9, fig. 9 is a schematic structural diagram of another display panel provided in the embodiment of the present application. The extending direction of the second signal line 29 is parallel to the extending direction of the second patch cord 31.

Further, the display panel further includes: the gate driver GOA circuit 32 is electrically connected to the second signal line 29 and the corresponding second patch line 31 through the same gate driver GOA circuit 32.

The display panel may have a display region and a non-display region 214 located at the periphery of the display region, and the gate driver GOA circuit is located in the non-display region 214. Therefore, the first light emitting device and the second light emitting device in the same row on the display panel can simultaneously receive the same gate drive GOA control signal, so that the uniformity of the display panel is improved.

Alternatively, as shown in fig. 6, the plurality of first pixel driving circuits 23 and the plurality of second pixel driving circuits 25 are uniformly distributed in the transitional display area 212, and the plurality of first pixel driving circuits 23 and the plurality of second pixel driving circuits 25 are distributed in an interlaced manner.

Optionally, in the row direction of the second pixel driving circuits 25, the ratio of the number of the first pixel driving circuits 23 to the number of the second pixel driving circuits 25 is 4: 1. in the 25-column direction of the second pixel drive circuits, the ratio of the number of the first pixel drive circuits 23 to the number of the second pixel drive circuits 25 is 2: 1. compared with the related art, in the row direction of the second pixel driving circuits, the ratio of the number of the first pixel driving circuits to the number of the second pixel driving circuits is 8: 1. in the embodiment of the present application, more first pixel driving circuits can be provided in the same size region on the substrate, and based on this, the length of the transparent signal line can be further reduced.

Optionally, as shown in fig. 4, the substrate 21 further has a normal display area 213 located at the periphery of the transitional display area 212, and the display panel further includes: a plurality of third pixel driving circuits arranged in an array and a plurality of third light emitting devices arranged in an array are located in the normal display area 213, and the plurality of third pixel driving circuits are electrically connected with the plurality of third light emitting devices in a one-to-one correspondence.

The orthographic projection areas of the first pixel driving circuit, the second pixel driving circuit and the third pixel driving circuit on the substrate are the same. Therefore, the manufacturing difficulty of the display panel can be reduced.

Optionally, the display panel further includes: the pixel driving circuit comprises a plurality of virtual pixel driving circuits, wherein the virtual pixel driving circuits, a first pixel driving circuit, a second pixel driving circuit and a third pixel driving circuit are uniformly distributed on a substrate. The dummy pixel circuit may refer to a pixel driving circuit located at any light emitting device connection. The plurality of first light emitting devices, the second light emitting devices, and the third light emitting devices are also uniformly distributed on the substrate. The manufacturing difficulty of the display panel can be further reduced.

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.

The display device includes: the display device comprises a photosensitive sensor and a display panel, wherein the photosensitive sensor can be an image sensor, a light sensor, a distance sensor or the like in a camera. The photosensitive sensor is located on a side opposite to a display surface of the display panel. Wherein, the orthographic projection of the light sensing surface of the light sensing sensor on the display panel is positioned in the light-transmitting display area. The structure of the display panel may be the display panel in the above embodiments, for example, the display panel may be the display panel shown in fig. 4, fig. 5, fig. 6, or fig. 9.

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 more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.

In this application, the terms "first," "second," and "third" 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 only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, comprising:

and, a plurality of transparent signal lines;

and M is an integer greater than or equal to 3.

2. The display panel of claim 1, wherein the transmissive display region has N first sub-segments, the transitional display region has N second sub-segments distributed around the transmissive display region, and N is greater than or equal to M;

3. The display panel according to claim 2, wherein the areas of the N first sub-divisions are all the same.

4. The display panel according to claim 3, wherein N is equal to 4, and the first sub-partition has a triangular shape or a fan shape.

5. The display panel according to any one of claims 2 to 4, wherein the N first sub-partitions are in one-to-one correspondence with the N second sub-partitions, and the first sub-partitions are connected with the corresponding second sub-partitions;

6. The display panel according to any one of claims 1 to 4, characterized by further comprising: the plurality of second pixel driving circuits are arranged in an array mode and are positioned in the transitional display area, and the plurality of second light emitting devices are arranged in an array mode and are electrically connected with the plurality of second light emitting devices in a one-to-one correspondence mode;

7. The display panel according to claim 6, characterized in that the display panel further comprises: the first signal lines are electrically connected with a column of second light-emitting devices through a column of second pixel driving circuits, and the first transfer lines are electrically connected with a column of first light-emitting devices through a column of first pixel driving circuits and the transparent signal lines;

8. The display panel according to claim 7, wherein the first transfer line comprises: the first pixel driving circuit comprises a connecting wire and a jumper wire, wherein the connecting wire is electrically connected with the first pixel driving circuit, and the jumper wire is electrically connected with the connecting wire;

9. The display panel according to claim 6, characterized in that the display panel further comprises: the second signal lines are electrically connected with a row of second light-emitting devices through a row of second pixel driving circuits, and the second patch lines are electrically connected with a row of second light-emitting devices through a row of first pixel driving circuits and a plurality of transparent signal lines;

10. The display panel according to claim 9, wherein an extending direction of the second signal line is parallel to an extending direction of the second patch cord, the display panel further comprising: and the second signal line is electrically connected with the corresponding second patch cord through the same gate drive GOA circuit.

11. The display panel according to any one of claims 7 to 10, wherein the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are uniformly distributed in the transitional display region, and the plurality of first pixel driving circuits and the plurality of second pixel driving circuits are distributed in an interlaced manner.

12. The display panel according to claim 11, wherein a ratio of the number of the first pixel drive circuits and the second pixel drive circuits in a row direction of the second pixel drive circuits is 4: 1;

13. the display panel according to any one of claims 7 to 10, wherein the substrate further has a normal display region located at a periphery of the transition display region, the display panel further comprising: a plurality of third pixel driving circuits arranged in an array and a plurality of third light emitting devices arranged in an array are positioned in the normal display area, and the plurality of third pixel driving circuits are electrically connected with the plurality of third light emitting devices in a one-to-one correspondence manner;

14. The display panel according to claim 13, characterized by further comprising: the plurality of virtual pixel driving circuits, the first pixel driving circuit, the second pixel driving circuit and the third pixel driving circuit are uniformly distributed on the substrate.

15. A display device, comprising: a light sensitive sensor and the display panel of any one of claims 1 to 14, an orthographic projection of a light receiving face of the light sensitive sensor on the substrate being located within the light transmissive display region.