CN116723741A

CN116723741A - Display panel and display device

Info

Publication number: CN116723741A
Application number: CN202310721588.9A
Authority: CN
Inventors: 王守坤; 张治超; 延妮; 张秀玉; 潘新叶; 李俊峰; 邢汝博; 刘翔; 陈曼丽
Original assignee: Yungu Guan Technology Co Ltd
Current assignee: Yungu Guan Technology Co Ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2023-09-08

Abstract

The invention provides a display panel and a display device. The display panel is divided into light emitting area and printing opacity district, and light emitting area and printing opacity district are adjacent to be set up, and display panel includes: a substrate; the protective structure is arranged on the substrate and between the light-emitting area and the light-transmitting area; the light-emitting layer and the protective structure are positioned on the same side of the substrate, and the light-emitting layer comprises a plurality of light-emitting units which are arranged in the light-emitting area; the first electrode layer is positioned on one side of the light-emitting layer, which is away from the substrate, and comprises a first electrode arranged in the light-emitting area. By the scheme of the invention, the transmittance of the display panel can be effectively improved, and the requirements of UDC, transparent screen, stretching screen and other technologies can be better met.

Description

Display panel and display device

Technical Field

The invention relates to a display panel and a display device, and belongs to the technical field of display.

Background

With the development of process technology and the improvement of the use demands of people, on the basis of a conventional display scheme, new display technologies such as UDC (under-screen camera) technology and new product forms such as transparent screens and stretched screens appear. Related technologies such as UDC, transparent screen and stretching screen all need the display screen to have high transmittance, so how to improve the transmittance of the screen body becomes a problem to be solved urgently.

Disclosure of Invention

The invention provides a display panel and a display device, which are used for solving the problem of how to improve the transmittance of a screen body.

In a first aspect, embodiments of the present invention provide a display panel divided into a light emitting region and a light transmitting region, the light emitting region and the light transmitting region being disposed adjacent to each other,

the display panel includes:

a substrate;

the protective structure is arranged on the substrate and between the light-emitting area and the light-transmitting area;

the light-emitting layer and the protective structure are positioned on the same side of the substrate, and the light-emitting layer comprises a plurality of light-emitting units which are arranged in the light-emitting area;

the first electrode layer is positioned on one side of the light-emitting layer, which is away from the substrate, and comprises a first electrode which is arranged in the light-emitting area.

Preferably, the protective structure is disposed around the light emitting region;

preferably, the light emitting region is provided with only one light emitting unit;

preferably, the light emitting region is provided with at least two light emitting units.

Preferably, the protective structure is disposed around the light-transmitting region;

in a second aspect, an embodiment of the present invention further provides another display panel, including:

a substrate;

the protective structure is arranged on one side of the substrate and is enclosed to form a protective opening;

A light emitting layer located on the same side of the substrate as the protective structure, the light emitting layer including a plurality of light emitting units;

the first electrode layer is arranged on one side, deviating from the substrate, of the light-emitting layer, a first electrode opening is formed in the first electrode layer, orthographic projection of the first electrode opening on the substrate is located in the orthographic projection range of the protection opening on the substrate, and orthographic projection of the first electrode opening on the substrate is staggered with the orthographic projection of the light-emitting unit on the substrate.

In a third aspect, an embodiment of the present invention further provides a display device, including a display panel according to any one of the first aspect or the second aspect;

in one embodiment, preferably, the display device further includes a photosensitive element, and the photosensitive element is located on a side of the substrate facing away from the light emitting layer.

In the display panel and the display device provided by the invention, the display panel comprises a substrate, and a protective structure, a luminous layer and a first electrode layer which are arranged on one side of the substrate, wherein the protective structure is enclosed to form a protective opening, the first electrode layer is provided with the first electrode opening, and the orthographic projection of the first electrode opening on the substrate is positioned in the orthographic projection range of the protective opening on the substrate. So set up, enclose through setting up protective structure and close and form the protection opening to set up the first electrode opening that corresponds with protection opening position on first electrode layer, also carried out the imaging to first electrode layer promptly, make it not be continuous rete of whole, based on this, in the region that first electrode opening corresponds, no longer have the shielding of first electrode layer, consequently can effectively improve the light transmissivity in this region, satisfy the demand of technologies such as UDC, transparent screen and tensile screen better.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. Furthermore, these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Fig. 1 is a schematic top view of a display panel according to an embodiment of the invention;

FIG. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the invention;

FIG. 3 is a schematic top view of a display panel according to another embodiment of the present invention;

FIG. 4 is a schematic top view of a display panel according to another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a display panel according to another embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a display panel according to another embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of a display panel according to another embodiment of the invention;

fig. 8 is a schematic cross-sectional view of a display panel according to another embodiment of the invention;

FIG. 9 is a schematic cross-sectional view of a protective structure along a thickness direction of a display panel according to various embodiments of the present invention;

FIG. 10 is a schematic cross-sectional view of a display panel during manufacture according to an embodiment of the present invention;

FIG. 11 is a schematic top view of a display panel according to another embodiment of the present invention;

fig. 12 is a schematic top view of a display panel according to another embodiment of the invention;

fig. 13 is a schematic cross-sectional view of a display panel according to another embodiment of the invention;

fig. 14 is a schematic structural diagram of a display device according to an embodiment of the invention.

Reference numerals illustrate:

10-a substrate; 11-a first electrode layer; 11 a-a first electrode; 11 b-connecting lines; 12-a light emitting layer; 12 a-a light emitting unit; 13-a second electrode layer; 13 a-a second electrode; 14-a protective structure; 15-a first insulating layer; 151-pixel openings; 152-a pixel definition section; 16-a circuit array layer; 160-a buffer layer; 161-an active layer; 162-gate insulation layer; 163-gate; 164-a capacitive insulating layer; 165-a capacitive layer; 166-an interlayer dielectric layer; 167-source; 168-drain; 169-a planarization layer; 17-insulating holes; 171-a first insulating hole; 172-a second insulating hole; 173-insulating openings; 18-connecting holes; 19-a second insulating layer; 21-a first encapsulation layer; 21 a-a first seal-turning part; 22-a second encapsulation layer; AA 1-light emitting region; AA 2-light transmitting region.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. The following embodiments and features of the embodiments may be combined with each other without conflict.

With the development of process technology and the improvement of the use demands of people on display devices, new display technologies such as UDC technology and new product forms such as transparent screens and stretched screens appear.

The UDC technology also conceals the camera below the screen, so that a 'Liu Hai' area or a punching area corresponding to the front camera is omitted, and a real full screen is realized. The transparent screen, namely the transparent display screen, is a novel display technology, and can enable the display screen to maintain a transparent state while displaying images. The technology can display images, characters and the like without affecting the background landscape. And the screen is stretched, so that the screen can be stretched and deformed according to the requirement, and the display effects of different sizes and proportions are achieved.

The above technologies all require that the display screen has high transmittance, and conventional display panel schemes cannot meet the requirements.

Aiming at the problems, considering that the factor affecting the transmittance of the display panel is the light-emitting electrode layer at present, the invention provides a scheme for carrying out graphical design on the light-emitting electrode layer, namely, the structure of the light-emitting electrode layer is adjusted so that the light-emitting electrode layer is not a whole continuous film layer, thereby reducing the blocking of light and improving the transmittance of the display panel. The specific implementations are described below without limitation by way of several examples or embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic top view of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention, wherein a cross-sectional position corresponds to a cross-sectional line AA' in fig. 1. As shown in fig. 1 and 2, the display panel of the present embodiment is divided into a light emitting area AA1 and a light transmitting area AA2, where the light emitting area AA1 and the light transmitting area AA2 are adjacently disposed; the display panel includes: a substrate 10, a light emitting layer 12, a first electrode layer 11, a second electrode layer 13, and a protective structure 14.

The substrate 10 mainly performs supporting and bearing functions, and may be made of a flexible material such as stainless steel (StainlessUse Steel, SUS for short) or flexible Polyimide (PI), or may be made of a rigid material such as glass or silicon.

The light emitting layer 12 includes a plurality of light emitting units 12a, and the light emitting units 12a are disposed in the light emitting area AA1. The first electrode layer 11 is located on a side of the light emitting layer 12 away from the substrate 10, the first electrode layer 11 includes a first electrode 11a, and the first electrode 11a is also disposed in the light emitting area AA1. The second electrode layer 13 is located on a side of the light emitting layer 12 near the substrate 10, the second electrode layer 13 includes a plurality of second electrodes 13a, and the second electrodes 13a are also disposed in the light emitting area AA1.

Specifically, each light emitting unit 12a may include a material having an Electroluminescence (EL) property (abbreviated as a light emitting material), and each light emitting unit 12a and the first electrode layer 11 and the second electrode layer 13 at both sides thereof may constitute a basic light emitting structure. When a suitable voltage is applied between the first electrode layer 11 and the second electrode layer 13, the light emitting unit 12a can be excited to emit light. Further, different voltages may be applied to the plurality of light emitting units 12a through the first electrode layer 11 and the second electrode layer 13, so that the light emitting brightness, color, and the like of the different light emitting units 12a are different, and further, when the plurality of light emitting units 12a emit light in a specific combination, the display panel may display a specific screen. The first electrode layer 11 may be a cathode layer for providing a negative power signal to the light emitting layer 12, and the second electrode layer 13 may be an anode layer for providing a positive power signal to the light emitting layer 12.

In addition, the display panel of the present embodiment is further provided with a protective structure 14, where the protective structure 14 and the light-emitting layer 12 are located on the same side of the substrate 10, and are used for separating the light-emitting area AA1 and the light-transmitting area AA2. The light-emitting region AA1 is a region of the display panel capable of emitting light and displaying, and is provided with a light-emitting structure including film layers such as the first electrode layer 11, the light-emitting layer 12, and the second electrode layer 13. The light transmitting area AA2 is an area of the display panel that can facilitate better light transmission, i.e. the light transmitting area AA2 has higher light transmittance than the light emitting area AA 1. In this embodiment, since the light emitting layer 12, the first electrode layer 11 and the second electrode layer 13 are all located in the light emitting area AA1, that is, not located in the light transmitting area AA2, when light passes through the light transmitting area AA2, no film layers such as the light emitting layer 12, the first electrode layer 11 and the second electrode layer 13 are blocked, so that the light transmitting area AA2 has higher light transmittance. Thus, the display panel in this embodiment may be applied to a scene such as UDC, so that the photosensitive element such as a camera can more easily obtain more light, or may be applied to a scene such as a transparent screen, so that more light can pass through the display panel, thereby improving the transparent effect.

In some embodiments, the principle of separating the light emitting area AA1 and the light transmitting area AA2 based on the protective structure 14 is as follows: firstly, preparing a plurality of second electrodes 13a which are arranged at intervals on a substrate 10 according to a conventional process; then preparing a protective structure 14 in a spacing area between at least a part of the second electrodes 13a, wherein the side of the protective structure 14 where the second electrodes 13a are positioned is used as a light emitting area AA1, and the other side is used as a light transmitting area AA2; thereafter, the light emitting units 12a are evaporated on the side of each second electrode 13a facing away from the substrate 10, and the material of the first electrode layer 11 is evaporated on the whole surface of the side of the light emitting units 12a facing away from the light emitting units 12a, and a part of the evaporated material is adhered to the side (the upper side in fig. 2) of the protective structure 14 facing away from the substrate 10, and the rest of the material is dropped on two sides of the side wall of the protective structure 14, so that the material of the first electrode layer 11 on two sides of the side wall of the protective structure 14 is discontinuous. Then, the material of the first electrode layer 11 in the light-transmitting area AA2 may be removed by an etching process. In this way, the protective structure 14 can make the film layers of the light emitting area AA1 and the light transmitting area AA2 different, and the film layer of the light transmitting area AA2 is relatively less, so that the light transmitting area AA2 has higher transmittance.

As described above, the first electrode layer 11 may be patterned by providing the protective structure 14, so that the light-transmitting area AA2 of the display panel does not have the material of the first electrode layer 11, that is, the first electrode layer 11 is not a continuous film layer on the whole surface, so that the light-transmitting area AA2 of the display panel may have higher transmittance.

In addition, in some embodiments, the light emitting structure may further include other film layers for assisting light emission, such as a hole injection layer, a hole transport layer, and an electron blocking layer disposed between the second electrode 13a and the light emitting unit 12a, and an electron injection layer, an electron transport layer, and a hole blocking layer disposed between the first electrode 11a and the light emitting unit 12a, in addition to the second electrode 13a, the light emitting unit 12a, and the first electrode 11 a. Alternatively, in other embodiments, the light emitting structure may be a stacked light emitting structure, that is, may include a plurality of light emitting cells 12a and a charge generation layer disposed between adjacent light emitting cells 12 a. Since none of the solutions of the subsequent examples of the invention relates to improvements of the above-mentioned film layers, these film layers are not illustrated and described again when the embodiments of the invention are described hereinafter with reference to the accompanying drawings.

It should be noted that, in some embodiments, in order to break the first electrode layer 11 at the guard structure 14, as shown in fig. 2, a distance from the first side of the guard structure 14 to the substrate 10 is greater than or equal to a distance from the first side of the edge portion of the first electrode 11a to the substrate 10. Wherein, the first side of the protective structure 14 refers to the side of the protective structure 14 facing away from the substrate 10, the edge portion of the first electrode 11a refers to the portion of the first electrode 11a adjacent to the protective structure 14, and the first side of the first electrode 11a refers to the side of the first electrode 11a facing away from the substrate 10. That is, when one of the sides of the substrate 10 is taken as a reference plane, the "height" of the guard structure 14 must be greater than or equal to the "height" of the edge portion of the first electrode 11a, so that the first electrode layer 11 may form a step at the guard structure 14.

Furthermore, in some embodiments, as shown in fig. 1, the guard structure 14 may be disposed around the light emitting area AA 1. That is, the area surrounded by the protective structure 14 is the light emitting area AA1, and the area outside the area surrounded by the protective structure 14 is the light transmitting area AA2. By doing so, the area of the light-transmitting area AA2 can be made larger.

On this basis, it is further preferable that, in some embodiments, as shown in fig. 1, the light emitting area AA1 is provided with only one light emitting unit 12a. That is, only one light emitting unit 12a is correspondingly disposed in one light emitting area AA1 surrounded by each of the protective structures 14, and different light emitting units 12a are located in the light emitting area AA1 surrounded by different protective structures 14. By the arrangement, the total area of the light transmission area AA2 can be increased, and the light transmission effect is improved.

In other embodiments, referring to fig. 3, fig. 3 is a schematic top view of a display panel according to another embodiment of the present invention, where the schematic cross-sectional structure of fig. 2 may correspond to a cross-sectional line AA' in fig. 3. As shown in fig. 3, the light emitting area AA1 is provided with at least two light emitting units 12a (fig. 3 shows a case of two light emitting units 12 a). That is, in one light emitting area AA1 surrounded by each of the guard structures 14, two or more light emitting units 12a are provided correspondingly. By this arrangement, the number of guard structures 14 can be reduced, reducing process difficulty and complexity.

In addition, referring to fig. 4, fig. 4 is a schematic top view of a display panel according to another embodiment of the present invention, where the schematic cross-sectional structure of fig. 2 may correspond to a cross-sectional line BB' in fig. 4. As shown in fig. 4, in some embodiments, the protective structure 14 may be disposed around the light-transmitting area AA 2. That is, the area surrounded by the protective structure 14 is the light-transmitting area AA2, and the area outside the area surrounded by the protective structure 14 is the light-emitting area AA1. In this way, although the area of the light-transmitting region AA2 is smaller than the case where the protective structure 14 surrounds the light-emitting region AA1, the coverage area of the first electrode layer 11 can be correspondingly larger, so that the impedance of the first electrode layer 11 is lower.

Further preferably, in some embodiments, as shown in fig. 2, the first electrode layer 11 further includes a first electrode opening Q, where the first electrode opening Q is located in the light-transmitting area AA2. That is, by removing the material of the first electrode layer 11 of the region correspondingly surrounded by the protective structure 14, one or more first electrode openings Q penetrating the first electrode layer 11 may be formed on the first electrode layer 11, and the number and shape of the first electrode openings Q may be related to the number and shape of the respective light transmitting areas AA2 defined by the protective structure 14.

On the basis of this, it is further preferred that in some embodiments, as shown in fig. 2, part of the first electrode layer 11 is also located on the side of the guard structure 14 facing away from the substrate 10. That is, the material that falls on the side of the protective structure 14 facing away from the substrate 10 when the first electrode layer 11 is evaporated over the whole surface is not etched and removed, so that the process difficulty and complexity can be reduced.

With continued reference to fig. 1 to 4, in some embodiments, the display panel may include a plurality of light emitting areas AA1 disposed at intervals, and the first electrode layer 11 includes a plurality of first electrodes 11a disposed at intervals, and the first electrodes 11a are disposed corresponding to the light emitting areas AA 1. That is, the portion of the first electrode layer 11 corresponding to the light emitting region AA1 is the first electrode 11a. In this way, the portion between the adjacent light emitting regions AA1 may serve as the light transmitting region AA2, so that the area of the light transmitting region AA2 may be increased.

On this basis, it is further preferable that, as shown in fig. 2, the display panel further includes a connection line 11b, and the connection line 11b is electrically connected to the first electrode 11a corresponding to the adjacent light emitting area AA 1.

Specifically, in order to ensure that each first electrode 11a can work normally, that is, receive the power signal (ELVSS) normally, in this embodiment, the first electrode layer 11 in the display panel further includes a plurality of connection lines 11b, where the connection lines 11b are used to electrically connect adjacent first electrodes 11a, and finally, all the first electrodes 11a are conducted mutually. Thus, the first electrodes 11a of the respective regions can be finally connected to an external power supply signal.

In practice, the connection line 11b is not necessarily provided between all the adjacent first electrodes 11a, but only a part of the adjacent first electrodes 11a may be electrically connected by the connection line 11b, so long as all the first electrodes 11a are finally ensured to be electrically connected to each other. This reduces the blocking of light by the connection line 11b, and further improves the transmittance. However, the smaller the number of the connection lines 11b is, the higher the impedance of the entire first electrode layer 11 is, so that in practice, the number and arrangement positions of the connection lines 11b can be appropriately designed in consideration of the actual requirements for the impedance and transmittance of the first electrode 11a.

In addition, parameters such as the length and the width of the connection line 11b may be adjusted according to actual needs, and the extending direction of the connection line 11b may be a straight line, a broken line, a curve, or the like according to actual situations.

Further preferably, the connection line 11b comprises a transparent connection line. That is, some or all of the connection lines 11b may be made of a transparent and conductive material, so as to avoid the connection lines 11b from affecting the light transmittance. The material of the transparent connection line includes, but is not limited to, conductive transparent materials such as indium tin oxide (IndiumTinOxide, ITO) or indium gallium zinc oxide (IndiumGalliumZincOxide, IGZO).

In some embodiments, the connection line 11b may be disposed in the same layer as the first electrode 11 a. That is, the connection line 11b is formed in the same process step as the first electrode 11a using the same material. Specifically, in the process, the first electrode 11a may be formed by etching the first electrode layer 11 formed entirely, leaving a desired portion, and based on this, a portion where the connection line 11b is desired to be formed may be simultaneously left. Thus, the process steps can be simplified, and the manufacturing efficiency can be improved.

In some embodiments, at least one conductive layer is included between the light emitting layer 12 and the substrate 10. These conductive layers are used to form structures such as electrodes, traces, or connection layers. On this basis, the connection line 11b may be provided in the same layer as any one of the conductive layers. The structure, area, arrangement mode and other structural parameters of different conductive layers may be different, so in practice, the film layer, the arrangement position, the structure and the like of the connecting line 11b may be reasonably set according to the actual situation of the conductive layers, so that the structure of the original conductive layer is ensured not to be interfered after the connecting line 11b is set. Of course, the structure of the original conductive layer may be adjusted as necessary so that the connection line 11b can be more conveniently provided. In this embodiment, the connection line 11b is no longer arranged in the same layer as the first electrode 11a, but is arranged in the film layer between the light-emitting layer 12 and the substrate 10. Thus, the area of the first electrode opening Q can be enlarged, and parameters such as the actual position and the routing direction of the connecting line 11b can be conveniently adjusted according to the actual situation.

For example, the second electrode layer 13 is a conductive layer between the light emitting layer 12 and the substrate 10, and according to this embodiment, the connection line 11b may be disposed on the same layer as the second electrode 13 a.

For another example, in some embodiments, the conductive layer includes a first metal layer, where the first metal layer is located on a side of the second electrode layer 13 facing the substrate 10, and the first metal layer is provided with a source and a drain of the thin film transistor. Based on this, in some embodiments, the connection line 11b may be disposed in the same layer as the first metal layer, that is, the source and drain electrodes of the thin film transistor in the display panel.

It will be appreciated that in other embodiments, the conductive layer may further include other film layers, which are not described herein.

Furthermore, in some embodiments, at least one insulating layer is provided between the conductive layer and the first electrode layer 11. These insulating layers may insulate the conductive layer from the first electrode layer 11.

On the basis, in some embodiments, the protective structure 14 may be disposed on a side of the at least one insulating layer facing away from the substrate 10.

For example, as shown in fig. 2, in some embodiments, the insulating layer includes a first insulating layer 15, the first insulating layer 15 includes a pixel defining portion 152 and a pixel opening 151 formed by surrounding the pixel defining portion 152, and the light emitting unit 12a is disposed in the pixel opening 151. The first insulating layer 15 may also be referred to as a pixel defining layer, and the first insulating layer 15 includes pixel openings 151 for defining the positions of the light emitting cells 12 a. The protective structure 14 may be disposed on a side of the pixel defining portion 152 facing away from the substrate 10.

Specifically, in the display panel, the main stream is designed to form a pixel unit by using the light emitting units 12a of the three optical primary colors red (R), green (G) and blue (B), so as to realize full-color display of the display panel. In this case, it is necessary that the respective light emitting units 12a are arranged in a specific form to meet the display requirement. The pixel defining layer 15 may be used for the purpose of defining the position of the light emitting structure (sub-pixel), wherein when the light emitting layer 12 is prepared on the side of the second electrode 13a facing away from the substrate 10, the pixel defining layer 15 may be first formed and a plurality of pixel openings 151 arranged in a specific form may be formed through an etching process, and then vapor deposition may be performed, thereby forming the light emitting unit 12a in the pixel openings 151. Then, the first electrode layer 11 is formed on the entire surface of the light emitting layer 12 and the pixel defining layer 15 facing away from the substrate 10 by vapor deposition, and the first electrode layer 11 is etched to obtain a plurality of first electrodes 11a arranged at intervals.

In other embodiments, referring to fig. 5, fig. 5 is a schematic cross-sectional structure of a display panel according to another embodiment of the invention. As shown in fig. 5, at least one insulating layer is provided with an insulating hole 17, and the protective structure 14 is located in the insulating hole 17. Specifically, as can be seen from fig. 2, when the protective structure 14 is disposed on the side of the insulating layer facing away from the substrate 10, the overall thickness of the display panel increases. To solve this problem, in this embodiment, the insulating hole 17 is provided in at least one insulating layer, and the protective structure 14 is entirely or partially provided in the insulating hole 17 (fig. 5 shows the case where the protective structure 14 is entirely provided in the insulating hole 17), so that the height of the protective structure 14 relative to the substrate 10 can be reduced, the increase in the overall thickness of the display panel can be completely avoided, or the increase in the overall thickness of the display panel can be reduced to some extent.

Wherein the insulating hole 17 may comprise a through hole penetrating the insulating layer or a blind hole not penetrating the insulating layer. In some embodiments, the insulation hole 17 is annular in front projection on the substrate 10, and thus the guard structure 14 disposed in the insulation hole 17 is also annular.

For example, in some embodiments, referring to fig. 5, the first insulating layer 15 is provided with a first insulating hole 171, and the guard structure 14 is at least partially located in the first insulating hole 171. In this way, the protective structure 14 is embedded in the first insulating hole 171, so that the height of the protective structure 14 relative to the substrate 10 can be reduced, and the overall thickness of the display panel is prevented from being increased or reduced by an amount equal to the increase of the overall thickness of the display panel.

In addition, in some embodiments, the insulating layer between the conductive layer and the first electrode layer 11 may further include a second insulating layer 19, where the second insulating layer 19 is located on a side of the second electrode layer 13 facing the first metal layer.

Further, in some embodiments, the second insulating layer 19 may be a Planarization Layer (PLN), where the planarization layer has a larger thickness, and may perform an insulating function on the one hand, and may form a flat contact surface on the other hand, so as to facilitate the placement of a film layer such as the second electrode layer 13 thereon.

More specifically, referring to fig. 6, fig. 6 is a schematic cross-sectional structure of a display panel according to still another embodiment of the present invention. As shown in fig. 6, the display panel further includes a circuit array layer 16 disposed between the light emitting layer 12 and the substrate 10, and the circuit array layer 16 includes a buffer layer 160 (buffer), an active layer 161 (poly), a gate insulating layer 162 (GI), a gate electrode 163 (G), a capacitor insulating layer 164 (CI), a capacitor layer 165 (C), an interlayer dielectric layer 166 (ILD), a source electrode 167 (S), a drain electrode 168 (D), and a planarization layer 169 (PLN), wherein the planarization layer 169 may serve as the second insulating layer 19. The active layer 161, the gate electrode 163, the source electrode 167, the drain electrode 168 and the insulating layer therebetween form a thin film transistor for controlling on/off of signals.

On the basis of this, in some embodiments, the protective structure 14 may be located on a side of the second insulating layer 19 facing away from the substrate 10. That is, the first insulating hole 171 on the first insulating layer 15 is a through hole, and the guard structure 14 is disposed in the through hole and on the second insulating layer 19 between the first insulating layer 15 and the substrate 10.

In other embodiments, with continued reference to fig. 6, the second insulating layer 19 is provided with a second insulating hole 172, and the guard structure 14 is at least partially disposed within the second insulating hole 172. That is, similar to the first insulating layer 15 having the first insulating hole 171, in this embodiment, the second insulating hole 172 is formed in the second insulating layer 19, and the protective structure 14 is at least partially disposed in the second insulating hole 172. In this way, an increase in the thickness of the display panel after the protective structure 14 is provided can be better avoided.

Further, in some embodiments, the orthographic projection of the first insulating hole 171 on the substrate 10 coincides with the orthographic projection of the second insulating hole 172 on the substrate 10. In this way, the first insulating hole 171 and the second insulating hole 172 can be formed at one time in the same process, simplifying the process steps.

In some embodiments, as shown in fig. 2, 5, 6 and 7, fig. 7 is a schematic cross-sectional view of a display panel according to another embodiment of the present invention. The insulating layer is provided with a connection hole 18 penetrating the insulating layer, and the first electrode 11a is electrically connected to the connection line 11b through the connection hole 18.

Further, as shown with continued reference to fig. 2, in some embodiments, the first electrode 11a is positioned within the pixel opening and extends to a side of the pixel defining portion 152 facing away from the substrate 10.

Specifically, when the connection hole 18 is provided to electrically connect the first electrode 11a and the connection line 11b, the connection hole 18 needs to penetrate through an insulating layer between the first electrode 11a and the connection line 11 b. In order to avoid the influence of the connection hole 18 on the light emitting unit 12a and the second electrode 13a, in this embodiment, the first electrode 11a extends from the pixel opening 151 to a side of the pixel defining portion 152 away from the substrate 10, so that the light emitting unit 12a and the second electrode 13a can be conveniently avoided when the connection hole 18 is formed.

In some embodiments, with continued reference to fig. 5, the orthographic projection of the connection holes 18 on the substrate 10 is offset from the orthographic projection of the insulating holes 17 on the substrate 10. That is, the connection hole 18 is opened so as to avoid the insulation hole 17, and penetrates all insulation layers between the first electrode 11a and the connection line 11 b.

In other embodiments, referring to fig. 6, fig. 6 is a schematic cross-sectional structure of a display panel according to another embodiment of the invention. As shown in fig. 6, the orthographic projection of the connection hole 18 on the substrate 10 is located within the orthographic projection range of the insulation hole 17 on the substrate 10. On the basis of this, the first electrode 11a also extends into the insulating hole 17 and is electrically connected to the connection line 11b through the connection hole 18. So set up, the connecting hole 18 no longer runs through all insulating layers between the first electrode 11a and the connecting wire 11b, but only runs through a part of the membrane layer below the protective structure 14, so the punching depth of the connecting hole 18 can be effectively reduced, thereby reducing the punching difficulty.

In other embodiments, referring to fig. 8, fig. 8 is a schematic cross-sectional structure of a display panel according to another embodiment of the invention. As shown in fig. 8, the first electrode 11a also extends into the insulating hole 17 to overlap the protective structure 14, and the first electrode 11a is electrically connected to the connecting wire 11b through the protective structure 14; wherein the guard structure 14 is a conductive structure.

That is, in the present embodiment, the guard structure 14 may be entirely or partially made of a conductive material so as to be conductive, whereby the first electrode 11a and the connection line 11b are electrically connected by the guard structure 14 as a connection structure. By the arrangement, the length of the connecting line 11b can be shortened to a certain extent, so that the influence of the connecting line 11b on other original structures is better avoided. For example, when the connection line 11b is disposed on the same layer as the source/drain electrode of the thin film transistor, the connection line 11b can be prevented from occupying the space for disposing the source/drain electrode.

In some embodiments, as shown in fig. 8, the first electrode 11a may overlap only a side of the protection structure 14 facing the light emitting area AA 1. On the basis of this, in other embodiments, the first electrode 11a may also extend to a side of the protective structure 14 away from the substrate 10, and overlap (not shown) with a side of the protective structure 14 away from the substrate 10, so as to increase the overlapping area and ensure the overlapping effect.

It should be noted that the insulating hole 17 shown in the above embodiment is merely exemplary, and in practice, the insulating hole 17 may continue to extend in a direction gradually approaching the substrate 10, as long as the necessary structure as in the existing film layer is not affected.

For example, based on the structure shown in fig. 6, the insulating hole 17 may penetrate deep into the planarization layer 169.

In other embodiments, the insulating hole 17 may also penetrate the planarization layer 169, so that the protection structure 14 may be disposed on the film layer below the planarization layer 169. The number of penetrating film layers of the insulating hole 17 is not limited in the present invention as long as the arrangement of other necessary structures (such as a thin film transistor) is not affected.

Furthermore, in some embodiments, the guard structure 14 includes a first surface proximate to the substrate 10 and a second surface distal from the substrate 10, the front projection of the first surface on the substrate 10 being within the front projection of the second surface on the substrate 10. That is, taking the example that the protective structure 14 is located on the upper side of the substrate 10, the protective structure 14 may be designed with a "wide top and narrow bottom", so that the first electrode layer 11 may be better ensured to be disconnected at the protective structure 14.

For example, referring to fig. 9, fig. 9 is a schematic cross-sectional view of a protective structure 14 along a thickness direction of a display panel according to various embodiments of the present invention. As shown in fig. 9 (a), 9 (b) and 9 (c), the cross-sectional view of the guard structure 14 may be an isosceles or non-isosceles inverted trapezoid.

Further, in other embodiments, the protective structure 14 includes a first layer and a second layer that are stacked in a direction away from the substrate 10, and an orthographic projection of the first layer on the substrate 10 is located within an orthographic projection range of the second layer on the substrate 10. That is, as shown in fig. 9 (d), the protective structure 14 has a cross-sectional pattern like a "T", and the "T" shaped protective structure 14 includes a first layer and a second layer that are stacked, wherein the width of the first layer on the side relatively closer to the substrate 10 is smaller than the width of the second layer on the side relatively farther from the substrate 10.

In addition, in other embodiments, in order to make the first electrode layer 11 break at the protecting structure 14 better, the protecting structure 14 may also have other structures, for example, as shown in fig. 9 (e), the protecting structure 14 has a cross-sectional pattern similar to an "i" shape.

It will be appreciated that fig. 9 shows only a portion of possible configurations of the cross-sectional pattern of the guard structure 14, and that other embodiments may be possible in which the cross-sectional pattern of the guard structure 14 may be other patterns, so long as a "eave" like structure can be formed so as to enable the first electrode layer 11 to be better broken at the guard structure 14.

In addition, in some embodiments, the material of the protective structure 14 may be an organic material, such as PI, or an inorganic material. When an inorganic material is used, it may be a metallic material such as metallic molybdenum or a metallic laminate, or a nonmetallic material such as silicon oxide (SiOx), or the like. Specifically, the selection can be performed according to actual needs. Further, the material of the protective structure 14 may be a transparent material, so as to avoid a significant decrease in light transmittance caused by the protective structure 14 blocking light.

In addition, in some embodiments, in order to protect the light emitting unit 12a, prevent the light emitting unit 12a from being disabled due to intrusion of moisture, the display panel may further include an encapsulation layer, where the encapsulation layer is disposed on a side of the light emitting layer 12 facing away from the substrate 10 and is continuous throughout, so that external moisture can be effectively prevented from entering the light emitting unit 12 a. The packaging layer can be formed by adopting a Chemical Vapor Deposition (CVD) process, and the packaging layer film formed by the process can be well adhered to the surfaces of other structures, has good adhesive force, has uniform film thickness and can be adjusted according to requirements.

Moreover, the protection structure 14 can also be used for encapsulating the light-emitting structure by matching with the encapsulation layer, so as to protect the side wall of the light-emitting structure and better avoid the failure of the light-emitting structure caused by the intrusion of water vapor.

Further, in some embodiments, as shown in fig. 5 to 8, the encapsulation layer includes a first encapsulation layer 21, the first encapsulation layer 21 includes a first encapsulation portion 21a, and at least the first encapsulation portion 21a is disposed in the light emitting area AA1 and contacts the protection structure 14. The first encapsulation layer 21 further includes an encapsulation opening disposed in the light-transmitting area AA2. The first encapsulation layer 21 may be formed using a CVD process. Preferably, the first encapsulation layer 21 is an inorganic material.

Specifically, in practice, the first electrode layer 11 is generally formed, and the first encapsulation layer 21 is formed on the side of the first electrode layer 11 facing away from the substrate 10, and then the first encapsulation layer 21 and the first electrode layer 11 corresponding to the light-transmitting area AA2 are etched, so as to obtain the first electrodes 11a disposed at the required intervals. Therefore, the portion of the first encapsulation layer 21 located in the light-transmitting area AA2 is removed to form an encapsulation opening, and the portion of the first encapsulation layer 21 located in the light-emitting area AA1 is left to form a first encapsulation portion 21a. The material of the first electrode layer 11 at the position corresponding to the package opening is removed.

For better understanding, referring to fig. 10, fig. 10 is a schematic cross-sectional structure of a display panel during a manufacturing process according to an embodiment of the present invention. As shown in fig. 10, by providing the protective structure 14, when the entire first electrode layer 11 is formed, the first electrode layer 11 may be broken at the protective structure 14 (as shown in fig. 10 (a), a portion of the cathode material may fall on the side of the protective structure 14 facing away from the substrate 10, so that the first electrode layer 11 is no longer continuous), and then, when the first encapsulation layer 21 is formed, the first encapsulation layer 21 may fill up into the region S between the protective structure 14 and the first electrode 11a, so as to form an independent encapsulation for the regions of different light emitting regions AA1, thereby improving the encapsulation reliability (even if a portion of the light emitting regions AA1 fail, all the light emitting regions AA1 will not further fail). In addition, as shown in fig. 10 (b), when the first electrode layer 11 is patterned by an etching process, only the material of the first encapsulation layer 21 and the first electrode layer 11 between two adjacent protection structures 14 is removed (specific positions refer to a region R in fig. 10 (a)), so that even if the portion of the first encapsulation layer 21 located in the light-transmitting region AA2 needs to be removed when the first electrode layer 11 is patterned, after removing the portion, the first electrode 11a is not exposed outside the first encapsulation portion 21a of the first encapsulation layer 21, that is, the entire light-emitting structure is protected by the first encapsulation portion 21a of the first encapsulation layer 21.

In some embodiments, it is preferable that the first encapsulation portion 21a contacts at least a side of the protection structure 14 facing the light emitting area AA 1. In this way, an effective package protection for the light emitting structure can be ensured. Further preferably, as shown in fig. 5 to 8, the first encapsulation portion 21a contacts a side of the shielding structure 14 facing away from the substrate 10. That is, in the present embodiment, the portion of the first encapsulation portion 21a on the side of the shielding structure 14 facing away from the substrate 10 is also retained. In this way, an effective package protection for the light emitting structure can be further ensured.

With continued reference to fig. 5 to 8, the encapsulation layer further includes a second encapsulation layer 22, where the second encapsulation layer 22 is located on a side of the first encapsulation layer 21 facing away from the substrate 10, and is disposed on the light emitting area AA1 and the light transmitting area AA2, and covers the protective structure 14. That is, in order to further improve the package reliability, as shown in fig. 10 (c), after etching the first electrode layer 11, a continuous second package layer 22 may be formed on the side of the first package layer 21 and the protection structure 14 facing away from the substrate 10, so as to implement multiple package protection. The second encapsulation layer 22 may also be formed by a CVD process. Preferably, the second encapsulation layer 22 is an inorganic material.

It should be noted that, if the modification of the embodiments of the present invention is applied to a display panel or a display device using the UDC technology, the light-transmitting area AA2 may only correspond to a portion of the display area corresponding to the camera, that is, only the first electrode layer 11 of a portion of the display area corresponding to the camera may be patterned, so that the first electrode layer includes a plurality of first electrodes 11a, so as to improve the light transmittance of the portion of the display area, and the remaining display areas may not be adjusted, so that the original structure may be maintained. Of course, in other embodiments, the first electrode layer 11 of the entire display area of the display panel using the UDC technology may be patterned, which is not limited by the present invention.

In addition, if the schemes of the embodiments of the present invention are applied to a transparent screen or a stretched screen, the first electrode layer 11 of the entire display area of the display panel may be patterned, so that the light transmittance of the entire display area is increased.

In addition, in some embodiments, the insulating layer is formed with an insulating opening 173 at a portion of the light-transmitting area AA 2. With continued reference to fig. 8, in the display panel structure shown in fig. 8, an insulating opening 173 is formed in a portion of the first insulating layer 15 located in the light-transmitting area AA 2. That is, when patterning the cathode, a portion of the first insulating layer 15 of the light-transmitting region AA2 is removed in addition to the material of a portion of the first encapsulation layer 21 and a portion of the first electrode layer 11 of the light-transmitting region AA2, so that the portion of the first insulating layer 15 located in the light-transmitting region AA2 forms the insulating opening 173. By this arrangement, since the region is free from the first insulating layer 15 to reflect and refract light, the light transmittance can be further improved. In addition, it can be understood that, in other embodiments, when the first insulating layer 15 in the light-transmitting area AA2 is etched away, a portion of the film layer under the first insulating layer 15 may be further etched away, so as to further improve the light transmittance. However, the more film layers are etched and removed, the higher the requirement on the etching process is, the more complicated the steps are, and the greater the difficulty is, so that the film layers can be reasonably selected according to actual needs during specific implementation.

In addition, the display panel includes other structures necessary for realizing the functions thereof in addition to the structures mentioned in the above embodiments, but the present invention may not be modified in these structures, and thus will not be described one by one.

In addition, referring to fig. 11, fig. 12 and fig. 13, fig. 11 and fig. 12 are schematic top view structures of a display panel according to another embodiment of the present invention, and fig. 13 is a schematic cross-sectional structure of a display panel according to another embodiment of the present invention, wherein a cross-sectional position corresponding to fig. 13 is a cross-sectional line CC 'in fig. 11 or a cross-sectional line DD' in fig. 12. As shown in fig. 10 to 12, in the present embodiment, the display panel includes: a substrate 10, a protective structure 14, a light emitting layer 12, a first electrode layer 11 and a second electrode layer 13.

The protective structure 14 is disposed on one side of the substrate 10, and the protective structure 14 encloses to form a protective opening P.

The first electrode layer 11 is disposed on a side of the light emitting layer 12 away from the substrate 10, the first electrode layer 11 is provided with a first electrode opening Q, and the front projection of the first electrode opening Q on the substrate 10 is located in the front projection range of the protection opening P on the substrate 10 and is staggered from the front projection of the light emitting unit 12a on the substrate 10.

First, it should be noted that the substrate 10, the protective structure 14, the light emitting layer 12, the first electrode layer 11 and the second electrode layer 13 in this embodiment are identical to the same structures in the foregoing embodiments, and the functions, materials, etc. thereof are not repeated.

In addition, the first electrode opening Q, i.e., the removed portion of the first electrode layer 11, has a higher transmittance in a corresponding region. That is, the light emitting region and the light transmitting region in the foregoing embodiment may be separated by the protective opening P formed by enclosing the protective structure 14. Wherein the first electrode opening Q is located in the light-transmitting region, and the light-emitting unit 12a is located in the light-emitting region.

Further, in some embodiments, the first electrode layer 11 includes a plurality of first electrodes 11a disposed at intervals and a connection line 11b electrically connecting adjacent first electrodes 11a, where the front projection of the first electrodes 11a on the substrate 10 and the front projection of the first electrode openings Q on the substrate 10 are staggered. That is, the first electrode 11a is formed at a portion of the first electrode layer 11 other than the first electrode opening Q.

Preferably, the orthographic projection of the connection line 11b on the substrate 10 is offset from the orthographic projection of the first electrode opening Q on the substrate 10. That is, the connection line 11b is not routed from the region of the first electrode opening Q, so that the connection line 11b can be prevented from affecting the light transmittance. Further, in some embodiments, it is preferable that the first electrode 11a and the connection line 11b are provided in the same layer.

Specifically, the function and structure of the connection lines 11b and the like are consistent with the foregoing embodiments for electrically connecting the first electrodes 11a disposed at intervals to each other, so as to ensure that each of the first electrodes 11a can normally operate, that is, normally receive a power supply signal (ELVSS).

In addition, in some embodiments, at least one conductive layer is included between the light emitting layer 12 and the substrate 10, and at least one insulating layer is disposed between the conductive layer and the first electrode layer 11. The conductive layers are used to form structures such as electrodes, wirings or connection layers, for example, the conductive layers can be used to form power supply wirings, signal wirings, capacitor plates, source-drain electrodes and anodes of thin film transistors, and the like. The insulating layer between the conductive layer and the first electrode layer 11 serves to insulate the conductive layer and the first electrode layer 11 from each other. These insulating layers may include, for example, a pixel defining layer, a planarizing layer, and an insulating layer between a source and drain electrodes and a gate electrode of the thin film transistor, and the like.

Preferably, the conductive layer includes a conductive portion, and the orthographic projection of the conductive portion on the substrate 10 is offset from the orthographic projection of the first electrode opening Q on the substrate 10. For example, these conductive portions may be the wirings, the electrodes, or the like described above. That is, the conductive portion does not pass through the corresponding position of the region where the first electrode opening Q is located, so that it is possible to avoid the conductive portion from affecting the light transmittance of the region.

Preferably, the guard structure 14 is located on a side of the insulating layer facing away from the substrate 10. For example, when the insulating layer includes the pixel defining layer in the foregoing embodiment, the protective structure 14 may be located at a side of the pixel defining layer facing away from the substrate 10.

Preferably, the insulating layer is provided with an insulating hole, and the protective structure 14 is at least partially disposed in the insulating hole. The insulating hole may be a first insulating hole formed in the first insulating layer, a second insulating hole formed in the second insulating layer, or the like in the foregoing embodiments.

Preferably, the insulation hole is in the shape of a ring in front projection on the substrate 10. Thus, the guard structure 14 provided in the annular insulating hole is also provided in an annular shape. Preferably, the insulating hole is a through hole or a blind hole. The design can be specifically carried out according to actual needs.

Furthermore, in some embodiments, the insulating layer includes an insulating opening, and the orthographic projection of the insulating opening on the substrate 10 is located within the orthographic projection range of the protective opening P on the substrate 10. The insulating opening is also obtained by etching and removing a portion of the insulating layer between the first electrode opening Q and the substrate 10 when the first electrode layer 11 is etched to obtain the first electrode opening Q, and the light transmittance in the region can be improved by providing the insulating opening.

Furthermore, in some embodiments, the guard structure 14 includes a first surface proximate to the substrate 10 and a second surface distal from the substrate 10, the front projection of the first surface on the substrate 10 being within the front projection of the second surface on the substrate 10. In this way, it is possible to better ensure that the first electrode layer 11 breaks at the guard structure 14 when the first electrode layer 11 is formed.

In addition, in some embodiments, the display panel further includes a packaging layer, which is located on a side of the light-emitting layer away from the substrate 10, and is used for packaging and protecting the light-emitting structure formed by the film layers such as the light-emitting layer, so as to avoid the failure of the light-emitting structure caused by intrusion of water and oxygen.

Specifically, structures such as the connection line, the conductive layer, the insulating layer, and the encapsulation layer in the above embodiments, or specific structures of the film layer in the above embodiments are the same as those in the above embodiments, and reference may be made to the corresponding matters in the above embodiments, which will not be described in detail herein.

Referring to fig. 14, an embodiment of the present invention further provides a display device, which includes the display panel described in any one of the above embodiments. The display device can be a smart phone, a tablet personal computer or a notebook personal computer.

Since the display device includes the display panel according to any of the above embodiments, the display device has corresponding advantages, and will not be described herein.

Further, in some embodiments, the display device further includes a photosensitive element, where the photosensitive element is located on a side of the substrate facing away from the light emitting layer. The photosensitive element may be a camera, for example.

Exemplary embodiments are described herein with reference to plan views as idealized exemplary figures. In the drawings, the size of the region is exaggerated for clarity. Thus, variations from the shape of the drawings due to, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments.

Unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used in embodiments of the present invention, do not denote any order, quantity, or importance, but rather are used to avoid intermixing of components.

Throughout this specification, unless the context requires otherwise, the term "comprise" is to be construed in an open, inclusive sense, i.e. as "comprising, but not limited to. In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "particular examples," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A display panel is characterized by being divided into a light-emitting area and a light-transmitting area, wherein the light-emitting area and the light-transmitting area are adjacently arranged,

the display panel includes:

a substrate;

2. The display panel of claim 1, wherein the protective structure is disposed around the light emitting region;

3. The display panel of claim 1, wherein the protective structure is disposed around the light-transmissive region;

preferably, the first electrode layer further includes a first electrode opening, and the first electrode opening is located in the light-transmitting region;

preferably, a part of the first electrode is further located at a side of the protective structure facing away from the substrate.

4. The display panel according to claim 1, wherein the display panel includes a plurality of the light emitting regions arranged at intervals, the first electrode layer includes a plurality of the first electrodes arranged at intervals, and the first electrodes are arranged corresponding to the light emitting regions;

preferably, the display panel further includes a connection line electrically connected to the first electrode corresponding to the adjacent light emitting region;

Preferably, the connection line comprises a transparent connection line;

preferably, the material of the transparent connecting wire comprises indium tin oxide or indium gallium zinc oxide;

preferably, the connecting wire and the first electrode are arranged in the same layer;

preferably, at least one conductive layer is included between the light emitting layer and the substrate;

preferably, the connecting line is arranged in the same layer as any one of the conductive layers.

5. The display panel according to claim 4, wherein at least one insulating layer is provided between the conductive layer and the first electrode layer;

preferably, the protective structure is disposed on a side of the insulating layer away from the substrate;

preferably, at least one insulating layer is provided with an insulating hole, and the protective structure is positioned in the insulating hole;

preferably, the insulating hole comprises a blind hole or a through hole.

6. The display panel according to claim 5, wherein the conductive layer includes a second electrode layer including a plurality of second electrodes, the second electrodes being located at a side of the light emitting unit facing the substrate;

preferably, the connecting wire and the second electrode are arranged in the same layer;

preferably, the insulating layer comprises a first insulating layer, the first insulating layer comprises a pixel defining part and a pixel opening formed by surrounding the pixel defining part, and the light emitting unit is arranged in the pixel opening;

Preferably, the first electrode is located in the pixel opening and extends to a side of the pixel defining part away from the substrate;

preferably, the protection structure is located at a side of the pixel defining part away from the substrate;

preferably, the pixel defining portion is provided with a first insulation hole, and the protection structure is at least partially located in the first insulation hole.

7. The display panel according to claim 6, wherein the conductive layer includes a first metal layer on a side of the second electrode layer facing the substrate, the first metal layer being provided with a source electrode and a drain electrode of the thin film transistor;

preferably, the connecting wire and the first metal layer are arranged in the same layer;

preferably, the insulating layer further comprises a second insulating layer, and the second insulating layer is located on one side of the second electrode layer facing the first metal layer;

preferably, the protective structure is located at one side of the second insulating layer away from the substrate;

preferably, the second insulating layer is provided with a second insulating hole, and the protective structure is at least partially positioned in the second insulating hole;

preferably, the orthographic projection of the first insulation hole on the substrate coincides with the orthographic projection of the second insulation hole on the substrate.

8. The display panel according to claim 5, wherein the portion of the insulating layer located in the light-transmitting region is provided with an insulating opening.

9. The display panel of claim 5, wherein the protective structure is a conductive structure, the first electrode further extends into the insulating hole to overlap the protective structure, and the first electrode is electrically connected to the connection line through the protective structure;

preferably, the first electrode is overlapped with one side of the protection structure facing the light-emitting area;

preferably, the first electrode further extends to a side of the guard structure facing away from the substrate.

10. The display panel according to claim 5, wherein the insulating layer is provided with a connection hole penetrating the insulating layer, and the first electrode is electrically connected to the connection line through the connection hole;

preferably, the orthographic projection of the connecting hole on the substrate is staggered with the orthographic projection of the insulating hole on the substrate;

preferably, the orthographic projection of the connecting hole on the substrate is positioned in the orthographic projection range of the insulating hole on the substrate;

preferably, the first electrode further extends into the insulating hole and is electrically connected to the connection line through the connection hole.

11. The display panel of claim 1, wherein the protective structure comprises a first surface proximate to the substrate and a second surface distal from the substrate, the orthographic projection of the first surface at the substrate being within the orthographic projection of the second surface at the substrate;

preferably, the protective structure comprises a first layer and a second layer which are stacked along the direction far away from the substrate, and the orthographic projection of the first layer on the substrate is positioned in the orthographic projection range of the second layer on the substrate.

12. The display panel according to claim 1, wherein the material of the protective structure comprises an organic material or an inorganic material;

preferably, the material of the protective structure comprises a transparent material.

13. The display panel of claim 1, further comprising an encapsulation layer on a side of the light emitting layer facing away from the substrate;

preferably, the packaging layer comprises a first packaging layer, the first packaging layer comprises a first packaging part, and at least the first packaging part is arranged in the light emitting area and is in contact with the protective structure;

preferably, the first packaging layer further includes a packaging opening, and the packaging opening is disposed in the light-transmitting area;

Preferably, the first packaging part is contacted with one side of the protection structure facing the light emitting area;

preferably, the first packaging part is contacted with one side of the protective structure, which is away from the substrate;

preferably, the packaging layer further includes a second packaging layer, where the second packaging layer is located at a side of the first packaging layer away from the substrate, and is disposed at the light emitting area and the light transmitting area, and covers the protection structure;

preferably, the first encapsulation layer is an inorganic material;

preferably, the second encapsulation layer is an inorganic material.

14. A display panel, comprising:

a substrate;

15. The display panel of claim 14, wherein the first electrode layer comprises a plurality of first electrodes arranged at intervals and connecting lines electrically connecting adjacent first electrodes, wherein the front projection of the first electrodes on the substrate and the front projection of the first electrode openings on the substrate are staggered;

preferably, the orthographic projection of the connecting wire on the substrate is staggered with the orthographic projection of the first electrode opening on the substrate;

preferably, the first electrode and the connecting line are arranged in the same layer.

16. The display panel of claim 14, wherein at least one conductive layer is included between the light emitting layer and the substrate,

at least one insulating layer is arranged between the conductive layer and the first electrode layer;

preferably, the conductive layer includes a conductive portion, and the orthographic projection of the conductive portion on the substrate is staggered from the orthographic projection of the first electrode opening on the substrate;

preferably, the protective structure is located at one side of the insulating layer away from the substrate;

preferably, an insulation hole is formed in the insulation layer, and the protection structure is at least partially arranged in the insulation hole;

Preferably, the orthographic projection of the insulating hole on the substrate is annular;

preferably, the insulating hole is a through hole or a blind hole.

17. The display panel of claim 16, wherein the insulating layer includes an insulating opening, and wherein an orthographic projection of the insulating opening onto the substrate is positioned within an orthographic projection of the protective opening onto the substrate.

18. The display panel of claim 14, wherein the protective structure comprises a first surface proximate to the substrate and a second surface distal from the substrate, the orthographic projection of the first surface at the substrate being within the orthographic projection of the second surface at the substrate.

19. The display panel of claim 14, further comprising an encapsulation layer on a side of the light emitting layer facing away from the substrate.

20. A display device comprising the display panel according to any one of claims 1 to 19;

preferably, the display device further comprises a photosensitive element, and the photosensitive element is located on one side of the substrate, which is away from the light-emitting layer.