CN117750836A - Display panel and under-screen camera device - Google Patents

Abstract

The application provides a display panel and an under-screen camera device. According to the method, the area surrounded by the annular part of the conductive surrounding structure in the pixel unit is circular or elliptical in cross section in the plane direction parallel to the pixel definition layer, so that the cross section of the whole pixel unit in the plane direction parallel to the pixel definition layer is circular or elliptical, the fact that the edges of the pixel unit have no right-angle edges and sharp corners is guaranteed, and the diffraction effect of the display panel can be reduced. Secondly, the dividing part extending along the first direction is defined as a first dividing part, and the cathodes of the sub-pixels in the pixel accommodating area are contacted with the adjacent first dividing part to realize the electric connection between the sub-pixels and the conductive enclosure structure, so that the mutual electric connection between the cathodes of the sub-pixels in the pixel unit is ensured, and the display uniformity in the pixel unit is improved.

Description

Display panel and under-screen camera device

Technical Field

The application relates to the technical field of display, in particular to a display panel and an under-screen camera device.

Background

In order to meet the needs of users, local functional areas of some OLED (Organic Light-Emitting Diode) display devices need to have high Light transmittance while normally displaying images, that is, a Light-transmitting display area needs to be set in a screen area above a Light sensing device (mainly, an under-screen camera area). The shape of the light-transmitting and light-opaque regions of the light-transmitting display area is related to light diffraction, and light-transmitting boundary lines and sharp corners tend to increase the range of diffraction. In order to reduce the effect of light diffraction on the under-screen light-sensing element, it is necessary to avoid that the boundaries of the transparent areas are straight or that the corners are sharp.

Meanwhile, due to the arrangement of the light transmission area in the light transmission display area, the aperture ratio of pixels in the light transmission display area is reduced, and the display effect is affected.

Disclosure of Invention

The technical problem that this application mainly solves is to provide a display panel and under screen camera device, solves among the prior art how to reduce the influence of light diffraction to under screen photoinduction component and how to promote the problem of pixel aperture ratio.

In order to solve the technical problem, the first technical scheme provided by the application is as follows: providing a display panel which is applied to an under-screen camera display device, wherein the display panel is provided with an under-screen camera area; the under-screen camera shooting area comprises a pixel area and a light transmission area positioned at the side edge of the pixel area; wherein, include:

a pixel defining layer having a plurality of pixel openings arranged at intervals;

the pixel units are arranged in the pixel area of the under-screen shooting area; each of the pixel units includes:

the conductive enclosing structure protrudes from the pixel definition layer and encloses the pixel openings to form a plurality of pixel accommodating areas;

the sub-pixels are arranged in the pixel openings in a one-to-one correspondence manner and are arranged in the pixel accommodating areas in a one-to-one correspondence manner;

the conductive enclosure structure comprises an annular part and a plurality of dividing parts, and the cross section of the area enclosed by the annular part in the plane direction parallel to the pixel definition layer is circular or elliptical; the dividing part divides the area surrounded by the annular part to form a plurality of pixel accommodating areas which are arranged at intervals; defining the dividing part extending along the first direction as a first dividing part; in each pixel unit, the cathode of the sub-pixel in the pixel accommodating area is arranged by contacting with the adjacent first dividing part so as to realize the electric connection of the sub-pixel and the conductive enclosure structure.

Wherein the sub-pixel comprises an anode, a light-emitting layer and the cathode which are sequentially stacked; the cathode is evaporated on the surface of the light-emitting layer through an evaporation source, and the first direction is perpendicular to the scanning direction of the evaporation source.

The conductive enclosure structure comprises a conductive part and an insulating part which is arranged on the upper surface of the conductive part and shields the conductive part; the insulating portion extends out of the conductive portion in a direction away from the conductive portion in a direction parallel to a plane of the pixel defining layer.

The display panel further comprises a first conductive layer, a second conductive layer and a third conductive layer which are sequentially stacked towards a direction away from the pixel definition layer; the first conductive layer and the second conductive layer are both positioned in the pixel area, and the first conductive layer, the second conductive layer and the third conductive layer are laminated to form an auxiliary electrode and an anode of the sub-pixel, which are mutually insulated; the auxiliary electrode comprises a first connecting electrode and a second connecting electrode which are electrically connected with each other, the part of the third conductive layer, which is positioned in the pixel area, the second conductive layer and the first conductive layer are arranged in a laminated manner to form the first connecting electrode, and the part of the third conductive layer, which is positioned in the light transmission area, forms the second connecting electrode; the conductive part is electrically connected with the first connection electrode through a via hole on the pixel definition layer.

The second connection electrode is located between two adjacent pixel units and is used for electrically connecting the first connection electrodes of the two adjacent pixel areas.

The first connecting electrode is of an annular structure, and the conductive part of the annular part is electrically connected with the first connecting electrode through the through hole on the pixel definition layer;

or alternatively, the first and second heat exchangers may be,

the first connecting electrode is of a net structure, and the conducting parts of the annular part and the conducting parts of the dividing part are electrically connected with the first connecting electrode through the through holes on the pixel definition layer.

The first conductive layer and the third conductive layer are both indium tin oxide, and the second conductive layer is a metal layer; the thickness of the third conductive layer is greater than or equal to 20 nanometers.

Defining the rest of the dividing parts except the first dividing part as second dividing parts; the thickness of the first dividing part is greater than that of the second dividing part and greater than that of the annular part.

The pixel units are arranged in an array, and the cross section of the area surrounded by the annular part in the plane direction parallel to the pixel definition layer is circular; defining the distance between two adjacent pixel units as a first value, and defining the radius of the circle as a second value; the first value is greater than or equal to half the second value and less than or equal to twice the second value.

In order to solve the technical problem, the second technical scheme provided by the application is as follows: provided is an under-screen image pickup apparatus including:

a display panel including the display panel described above; the display panel has a display side and a non-display side disposed opposite to each other;

the camera module is arranged on the non-display side of the display panel and corresponds to the under-screen camera area.

The beneficial effects of this application: unlike the prior art, the application provides a display panel and an under-screen camera device, and the display panel is applied to the under-screen camera display device. The display panel has an under-screen camera area. The under-screen camera shooting area comprises a pixel area and a light transmission area positioned at the side edge of the pixel area. The display panel comprises a pixel definition layer and a plurality of pixel units. The pixel defining layer has a plurality of pixel openings arranged at intervals. The pixel units are arranged in the pixel area of the under-screen image pickup area. Each pixel unit comprises a conductive enclosure structure and a plurality of sub-pixels. The conductive enclosure structure protrudes out of the pixel definition layer, and encloses the pixel opening to form a plurality of pixel accommodating areas. The sub-pixels are arranged in the pixel openings in a one-to-one correspondence manner, and are arranged in the pixel accommodating areas in a one-to-one correspondence manner. The conductive enclosure structure comprises an annular part and a plurality of dividing parts, and the cross section of the area enclosed by the annular part in the plane direction parallel to the pixel definition layer is circular or elliptical. The dividing portion divides an area surrounded by the annular portion to form a plurality of pixel accommodation areas arranged at intervals. The divided portions extending in the first direction are defined as first divided portions. In each pixel unit, the cathodes of the sub-pixels in the pixel accommodating area are arranged in contact with the adjacent first dividing parts so as to realize the electric connection of the sub-pixels and the conductive enclosure structure. According to the method, the area surrounded by the annular part of the conductive surrounding structure in the pixel unit is circular or elliptical in cross section in the plane direction parallel to the pixel definition layer, so that the cross section of the whole pixel unit in the plane direction parallel to the pixel definition layer is circular or elliptical, the fact that the edges of the pixel unit have no right-angle edges and sharp corners is guaranteed, and the diffraction effect of the display panel can be reduced. Secondly, the dividing part extending along the first direction is defined as a first dividing part, and the cathodes of the sub-pixels in the pixel accommodating area are contacted with the adjacent first dividing part to realize the electric connection between the sub-pixels and the conductive enclosure structure, so that the mutual electric connection between the cathodes of the sub-pixels in the pixel unit is ensured, and the display uniformity in the pixel unit is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without any inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a prior art vapor deposition source and limiting plate;

FIG. 2 is a schematic diagram of an embodiment of a display panel in the prior art;

fig. 3 is a schematic structural diagram of a first embodiment of a display panel provided in the present application;

fig. 4 is a schematic structural diagram of a first embodiment of a pixel unit provided in the present application;

FIG. 5 is a schematic view of a first embodiment of a conductive enclosure structure provided herein;

FIG. 6 is a schematic cross-sectional view of the structure at G-G in FIG. 3;

FIG. 7 is a schematic cross-sectional view of the structure H-H of FIG. 3;

fig. 8 is a schematic structural diagram of a second embodiment of a pixel unit provided in the present application;

fig. 9 is a schematic structural diagram of a third embodiment of a pixel unit provided in the present application;

fig. 10 is a schematic structural view of a fourth embodiment of a pixel unit provided in the present application;

fig. 11 is a schematic structural view of a fifth embodiment of a pixel unit provided in the present application;

fig. 12 is a schematic structural view of a sixth embodiment of a pixel unit provided in the present application;

fig. 13 is a schematic structural view of a second embodiment of a display panel provided in the present application;

fig. 14 is a schematic structural view of a seventh embodiment of a pixel unit provided in the present application;

FIG. 15 is a schematic view of a second embodiment of a conductive enclosure structure provided herein;

fig. 16 is a schematic structural diagram of an embodiment of a display device provided in the present application.

Reference numerals illustrate:

100. a display panel; 10. a pixel definition layer; 110. a pixel opening; 20. a pixel unit; 21. a sub-pixel; 211. an anode; 212. a light emitting layer; 213. a cathode; 21A, a first pixel; 21B, a second pixel; 21C, third pixels; 22. a conductive enclosure structure; 220. a pixel accommodating region; 221. an annular portion; 221A, a sub-annular portion; 222. a dividing section; 222A, a first dividing portion; 222B, a second dividing section; 223. a conductive portion; 224. an insulating part; 30. a first conductive layer; 40. a second conductive layer; 50. a third conductive layer; 60. an auxiliary electrode; 61. a first connection electrode; 62. a second connection electrode; x, a first direction; y, second direction; 101. an under-screen camera area; 102. a pixel region; 103. a light transmission region; 104. a display side; 105. a non-display side; 200. a vapor deposition source; 300. a limiting plate; 400. and a camera module.

Detailed Description

The following describes the embodiments of the present application in detail with reference to the drawings.

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of an embodiment of a vapor deposition source and a limiting plate in the prior art, and fig. 2 is a schematic structural view of an embodiment of a display panel in the prior art.

In the actual vapor deposition process, since the vapor deposition source 200 forms one vapor deposition cloud in the longitudinal direction of the vapor deposition source 200, the vapor deposition angle of the vapor deposition material cannot be controlled in the longitudinal direction of the vapor deposition source 200, and the purpose of controlling the emission angle of the vapor deposition material can be achieved by using the limiting plates 300 on both sides in the moving direction of the vapor deposition source 200 (i.e., the scanning direction of the vapor deposition source 200). Therefore, in the conventional design as shown in fig. 2, the cathode 213 cannot entirely cover the end of the light emitting layer 212 in the long side direction of the vapor deposition source 200, so that the side wall of the conductive enclosure structure 22 extending in the moving direction of the vapor deposition source 200 does not contact the cathode 213, but the cathode 213 entirely covers the end of the light emitting layer 212 in the moving direction of the vapor deposition source 200, so that the side wall of the conductive enclosure structure 22 extending in the long side direction of the vapor deposition source 200 can overlap the cathode 213 of the sub-pixel 21.

Referring to fig. 3 to 7, fig. 3 is a schematic structural diagram of a first embodiment of a display panel provided in the present application, fig. 4 is a schematic structural diagram of a first embodiment of a pixel unit provided in the present application, fig. 5 is a schematic structural diagram of a first embodiment of a conductive enclosure structure provided in the present application, fig. 6 is a schematic structural diagram of a section at G-G in fig. 3, and fig. 7 is a schematic structural diagram of a section at H-H in fig. 3.

Based on the foregoing vapor deposition technology, the present application provides a display panel 100, where the display panel 100 is applied to an under-screen image capturing display device. The display panel 100 has an under-screen image pickup area 101. The under-screen image pickup area 101 includes a pixel area 102 and a light-transmitting area 103 located at a side of the pixel area 102. The display panel 100 includes a pixel defining layer 10 and a plurality of pixel units 20. The pixel defining layer 10 has a plurality of pixel openings 110 arranged at intervals. The plurality of pixel units 20 are disposed in the pixel region 102 of the under-screen image pickup region 101. Each pixel cell 20 comprises a conductive enclosure structure 22 and a plurality of sub-pixels 21. The conductive enclosure structure 22 protrudes from the pixel defining layer 10, and encloses the pixel openings 110 to form a plurality of pixel accommodating regions 220. The plurality of sub-pixels 21 are disposed in the pixel opening 110 in a one-to-one correspondence manner, and disposed in the pixel accommodating region 220 in a one-to-one correspondence manner. The conductive enclosure structure 22 includes an annular portion 221 and a plurality of dividing portions 222, and an area enclosed by the annular portion 221 is circular or elliptical in cross-section in a direction parallel to a plane of the pixel defining layer 10. The dividing portion 222 divides the region surrounded by the annular portion 221 to form a plurality of pixel accommodation regions 220 disposed at intervals. The divided portion 222 extending in the first direction X is defined as a first divided portion 222A. In each pixel unit 20, the cathode 213 of the sub-pixel 21 within the pixel accommodating region 220 is disposed by contacting with the adjacent first dividing portion 222A to electrically connect the sub-pixel 21 with the conductive enclosure structure 22.

The cross section of the area surrounded by the annular part 221 of the conductive surrounding structure 22 in the pixel unit 20 in the plane direction parallel to the pixel defining layer 10 is set to be round or oval, so that the cross section of the whole pixel unit 20 in the plane direction parallel to the pixel defining layer 10 is round or oval, the edges of the pixel unit 20 are ensured to have no right angle edges and sharp angles, and the diffraction effect of the display panel 100 can be reduced. Secondly, the partition 222 extending along the first direction X is defined as a first partition 222A, and the cathode 213 of the sub-pixel 21 in the pixel accommodating area 220 is disposed in contact with the adjacent first partition 222A to electrically connect the sub-pixel 21 with the conductive enclosure structure 22, so as to ensure the mutual electrical connection between the cathodes 213 of the sub-pixel 21 in the pixel unit 20, which is beneficial to improving the display uniformity in the pixel unit 20.

The pixel definition layer 10 is used to define the position of the sub-pixels 21. The pixel defining layer 10 has a plurality of pixel openings 110 arranged at intervals. The pixel opening 110 penetrates the pixel defining layer 10. The material and thickness of the pixel defining layer 10 are not limited herein, and are selected according to practical requirements.

The plurality of pixel units 20 are arranged in an array. In the present embodiment, a plurality of pixel units 20 are disposed at intervals from each other and are disposed in a matrix.

It should be appreciated that the display panel 100 further includes a main display area (not shown) located at a side of the under-screen image pickup area 101. The distribution of the sub-pixels 21 in the main display area is not limited here, and is selected according to actual requirements.

Each pixel cell 20 comprises a conductive enclosure structure 22 and a plurality of sub-pixels 21. Each conductive enclosure structure 22 encloses a plurality of pixel receiving areas 220 to realize enclosing a plurality of sub-pixels 21. The number of the sub-pixels 21 enclosed in the conductive enclosure structure 22 is not limited, and it is only necessary to ensure that the area enclosed by the annular portion 221 of the conductive enclosure structure 22 is circular or elliptical in cross section in the direction parallel to the plane of the pixel defining layer 10, so that the edge of the pixel unit 20 is nonlinear or sharp, so as to reduce the diffraction effect of the display panel 100.

Each sub-pixel 21 corresponds to a color pixel, where the color pixel corresponding to the sub-pixel 21 is not limited, and is selected according to actual requirements. The sub-pixel 21 includes an anode 211, a light emitting layer 212, and a cathode 213, which are sequentially stacked. The cathode 213 is deposited on the surface of the light emitting layer 212 by the deposition source 200, and the first direction X is perpendicular to the scanning direction of the deposition source 200. The first dividing portion 222A of the conductive enclosure structure 22 extending along the long side direction (i.e., the first direction X) of the evaporation source 200 can be overlapped with the cathode 213 of the sub-pixel 21, the shape of the sub-pixel 21 in the pixel unit 20 is not limited, and only the sub-pixel 21 in the pixel unit 20 needs to be overlapped with the first dividing portion 222A to realize the electrical connection between the sub-pixel 21 and the conductive enclosure structure 22.

In the present embodiment, the plurality of sub-pixels 21 of different colors are the first pixel 21A, the second pixel 21B, and the third pixel 21C, respectively. The first pixel 21A, the second pixel 21B, and the third pixel 21C correspond to one of red pixels, green pixels, and blue pixels, respectively. In other embodiments, the plurality of sub-pixels 21 of different colors may be pixels of other colors, and may include sub-pixels 21 of two, four, or more different colors.

In each pixel unit 20, the same color sub-pixels 21 may include at least one. When the number of the same color sub-pixels 21 in each pixel unit 20 is plural, the shape and the size of the plural same color sub-pixels 21 may be the same or different, which is not limited herein, and is selected according to the actual requirement.

The conductive enclosure structure 22 includes a conductive portion 223 and an insulating portion 224 disposed on an upper surface of the conductive portion 223 and shielding the conductive portion 223. The insulating portion 224 extends out of the conductive portion 223 in a direction away from the conductive portion 223 in a direction parallel to the plane of the pixel defining layer 10. It is understood that the insulating portion 224 covers the conductive portion 223, and the orthographic projection area of the insulating portion 224 on the pixel defining layer 10 is larger than the orthographic projection area of the conductive portion 223 on the pixel defining layer 10. The conductive portion 223 is configured to be in contact with and electrically connected to the cathode 213 of the sub-pixel 21 surrounded by the conductive enclosure structure 22, so as to electrically connect the sub-pixel 21 and the conductive enclosure structure 22. Further, the insulating portion 224 may be regarded as an eave structure. The insulating portion 224 is configured such that the insulating portion 224 can be used to adjust the vapor deposition angle when vapor depositing the sub-pixel 21, so that the cathode 213 of the sub-pixel 21 can better cover the end of the light emitting layer 212 of the sub-pixel 21 and achieve good overlap with the conductive portion 223.

In a direction parallel to the plane of the pixel defining layer 10, the conductive enclosure structure 22 includes an annular portion 221 and a plurality of dividing portions 222, the plurality of dividing portions 222 dividing the annular portion 221 into a plurality of sub-annular portions 221A, adjacent sub-annular portions 221A sharing sidewalls. Each sub-annular portion 221A encloses and forms a pixel accommodating area 220, and a portion of a sidewall of each sub-annular portion 221A extends along the first direction X, so that the cathode 213 of the sub-pixel 21 enclosed in the sub-annular portion 221A is disposed in contact with the portion of the sidewall extending along the first direction X to electrically connect the sub-annular portion 221A and the sub-pixel 21, thereby electrically connecting the sub-pixel 21 and the conductive enclosure structure 22.

The other dividing portions 222 except the first dividing portion 222A are defined as second dividing portions 222B, and the second dividing portions 222B may be linear structures or arc structures, which are not limited in this way and are selected according to practical requirements.

In this embodiment, the conductive enclosure structure 22 includes two first dividing portions 222A and two second dividing portions 222B, where the first dividing portions 222A and the second dividing portions 222B are vertically disposed, and divide the area surrounded by the annular portion 221 into five pixel accommodating areas 220, two first pixels 21A in the pixel unit 20 are respectively located in two non-adjacent pixel accommodating areas 220, and the sizes of the two first pixels 21A are different. The two second pixels 21B in the pixel unit 20 are respectively located in two non-adjacent pixel accommodating areas 220, and the sizes of the two second pixels 21B are different.

Referring to fig. 3 to 12, fig. 8 is a schematic structural diagram of a second embodiment of a pixel unit provided in the present application, fig. 9 is a schematic structural diagram of a third embodiment of a pixel unit provided in the present application, fig. 10 is a schematic structural diagram of a fourth embodiment of a pixel unit provided in the present application, fig. 11 is a schematic structural diagram of a fifth embodiment of a pixel unit provided in the present application, and fig. 12 is a schematic structural diagram of a sixth embodiment of a pixel unit provided in the present application.

In other embodiments, the conductive enclosure structure 22 may include two first dividing portions 222A, and the two first dividing portions 222A divide the area enclosed by the annular portion 221 into three pixel accommodation areas 220. The conductive enclosure structure 22 may further include three or more dividing portions 222 dividing the area enclosed by the annular portion 221 into three or more pixel accommodating areas 220, so that a plurality of sub-pixels 21 of the same color may be accommodated in each pixel unit 20. The second dividing portion 222B may have a linear structure or an arc structure. It should be understood that the arrangement of the sub-pixels 21 in the pixel unit 20 in the present application includes, but is not limited to.

The display panel 100 further includes a first conductive layer 30, a second conductive layer 40, and a third conductive layer 50 sequentially stacked in a direction away from the pixel defining layer 10. The first conductive layer 30 and the second conductive layer 40 are located in the pixel region 102, and the first conductive layer 30, the second conductive layer 40, and the third conductive layer 50 are stacked to form the auxiliary electrode 60 and the anode 211 of the sub-pixel 21, which are disposed to be insulated from each other. The auxiliary electrode 60 includes a first connection electrode 61 and a second connection electrode 62 electrically connected to each other. The portion of the third conductive layer 50 located in the pixel region 102, the second conductive layer 40, and the first conductive layer 30 are stacked to form the first connection electrode 61, and the portion of the third conductive layer 50 located in the light-transmitting region 103 forms the second connection electrode 62. The conductive portion 223 is electrically connected to the first connection electrode 61 through a via hole on the pixel defining layer 10, so that the conductive portion 223 is electrically connected to the second connection electrode 62, and further, the second connection electrode 62 is electrically connected to the conductive enclosure structure 22. It is understood that the anode electrode 211 of the sub-pixel 21 is composed of a three-layer structure, the first connection electrode 61 of the auxiliary electrode 60 is composed of a three-layer structure, and the second connection electrode 62 of the auxiliary electrode 60 is composed of a one-layer structure. The second connection electrode 62 is electrically connected to the first connection electrode 61 and is insulated from the anode 211, so as to avoid short-circuiting the anode 211 and affecting the normal display of the under-screen image pickup area 101 in the display panel 100.

The second connection electrode 62 is located between two adjacent pixel units 20 and is used for electrically connecting the first connection electrodes 61 of two adjacent pixel areas 102, so as to conduct the first connection electrodes 61 in the plurality of pixel areas 102 to each other, thereby realizing the whole-surface mesh connection of the cathodes 213 of the sub-pixels 21, and being beneficial to the display uniformity of the display panel 100.

Further, the first conductive layer 30 and the third conductive layer 50 are both Indium Tin Oxide (ITO), and the second conductive layer 40 is a metal layer. The metal layer may be a simple metal such as silver or a metal compound. The thickness of the third conductive layer 50 is greater than or equal to 20 nanometers. The thickness of the third conductive layer 50 cannot be too thin to avoid the problem of causing a voltage drop due to an excessive resistance of the second connection electrode 62, thereby affecting the display effect of the display panel 100.

The first conductive layer 30 and the second conductive layer 40 are patterned by using the anodic etching solution, and the third conductive layer 50 is patterned by using oxalic acid or other etching solutions, so as to obtain the first connection electrode 61, the second connection electrode 62 and the anode 211. An insulating arrangement is achieved between the anode 211 and the auxiliary electrode 60 by means of the pixel defining layer 10. The above preparation method does not add additional film and process compared to the preparation of the anode 211 in the prior art. That is, the structural arrangement of the present application can not only achieve a reduction in diffraction effects of the display panel 100, but also not increase manufacturing costs.

Since the second conductive layer 40 is a metal layer, the second conductive layer 40 may form a light shielding structure, that is, the pixel unit 20 is opaque, and only the light transmitting region 103 may transmit light.

In the present embodiment, the pixel units 20 are arranged in an array, and the area surrounded by the annular portion 221 has a circular cross section in the direction parallel to the plane of the pixel defining layer 10. The second connection electrode 62 has a strip structure and does not cover the whole light-transmitting area 103, so as to ensure the light transmittance of the light-transmitting area 103, ensure the image capturing effect of the under-screen image capturing area 101, and enable the under-screen image capturing area 101 to have the dual functions of light transmission and display.

It should be understood that, in other embodiments, the second connection electrode 62 may have other shapes, which are not limited herein, so long as the conductive enclosure structure 22 in different pixel units 20 can be electrically connected through the second connection electrode 62, and the light transmittance of the light transmitting region 103 is not affected.

The interval between two adjacent pixel units 20 is defined as a first value, the area surrounded by the annular portion 221 is circular in cross section in the direction parallel to the plane of the pixel defining layer 10, and the radius of the circular is a second value. The first value is greater than or equal to half of the second value and less than or equal to twice of the second value, so that the problem that insufficient light transmittance is caused by too small interval between the pixel units 20 to affect the image capturing effect of the under-screen image capturing area 101 and the problem that too large interval between the pixel units 20 is caused by too small interval between the pixel units to affect the display effect of the under-screen image capturing area 101 are avoided.

It should be understood that, to ensure the light transmittance of the light-transmitting region 103, the film layer of the light-transmitting region 103 is as small as possible and has a certain light transmittance. In the present embodiment, the light transmitting region 103 includes a driving substrate (not shown), a first connection electrode 61, an encapsulation layer (not shown), and an organic layer (not shown) which are stacked in this order. The structure and materials of the driving substrate, the encapsulation layer and the organic layer are not limited, and are selected according to practical requirements.

In the present embodiment, the first connection electrode 61 has a ring structure, and the conductive portion 223 of the ring portion 221 is electrically connected to the first connection electrode 61 through a via hole on the pixel defining layer 10. It is understood that the first connection electrode 61 is disposed corresponding to the annular portion 221. The annular portion 221 and the first connection electrode 61 are electrically connected through a via hole, so that the electrical connection between the entire conductive enclosure structure 22 and the first connection electrode 61 is achieved.

It should be understood that in other embodiments, the first connection electrode 61 is in a mesh structure, and the conductive portion 223 of the ring portion 221 and the conductive portion 223 of the dividing portion 222 are electrically connected to the first connection electrode 61 through the via hole on the pixel defining layer 10.

Referring to fig. 7, fig. 13 to fig. 15, fig. 13 is a schematic structural view of a second embodiment of a display panel provided in the present application, fig. 14 is a schematic structural view of a seventh embodiment of a pixel unit provided in the present application, and fig. 15 is a schematic structural view of a second embodiment of a conductive enclosure structure provided in the present application.

The second embodiment of the display panel 100 provided in the present application is substantially similar to the first embodiment of the display panel 100 provided in the present application in structure, except that: the thickness of the first divided portion 222A is greater than the thickness of the second divided portion 222B, and is greater than the thickness of the annular portion 221.

In the present embodiment, the thickness of the first divided portion 222A is greater than the thickness of the second divided portion 222B, and is greater than the thickness of the annular portion 221. It can be understood that, while keeping the thickness of the first dividing portion 222A unchanged and ensuring the shape and size of the pixel unit 20 unchanged, the thickness of the second dividing portion 222B is reduced and the thickness of the annular portion 221 is reduced, so as to increase the area of the corresponding pixel accommodating area 220, thereby increasing the effective light emitting area of the sub-pixel 21 in the pixel unit 20, and further increasing the pixel aperture ratio of the pixel unit 20, thereby increasing the pixel aperture ratio of the under-screen image capturing area 101.

The thickness of the annular portion 221 refers to the thickness between the inner sidewall and the outer sidewall of the annular portion 221. The thickness of the divided portion 222 refers to the thickness between two side wall surfaces of the divided portion 222 which are disposed opposite to each other in the short side direction of the divided portion 222. Specifically, the thickness of the annular portion 221 refers to the thickness between the inner side wall and the outer side wall of the insulating portion 224 of the annular portion 221.

The thickness of the second dividing portion 222B and the thickness of the annular portion 221 are not limited in this application. The thickness of the second dividing portion 222B in this embodiment is equal to that of the annular portion 221, so as to simplify the manufacturing difficulty of the conductive enclosure structure 22.

The characteristic that the side wall of the conductive enclosure structure 22 extending along the long side direction (i.e. the first direction X) of the evaporation source 200 (see fig. 1) can overlap with the cathode 213 of the sub-pixel 21 is utilized, and the thickness of the first partition 222A extending along the first direction X is unchanged, so that the cathode 213 of the sub-pixel 21 can be in contact with the first partition 222A to realize and ensure good electrical connection between the sub-pixel 21 and the conductive enclosure structure 22; meanwhile, the thickness of the annular part 221 and the second dividing part 222B of the conductive enclosure structure 22 which are not in contact with the cathode 213 of the sub-pixel 21 is reduced, so that the area of the pixel accommodating area 220 in the pixel unit 20 is increased without affecting good electrical connection between the conductive enclosure structure 22 and the sub-pixel 21, and the pixel aperture ratio is improved.

Referring to fig. 16, fig. 16 is a schematic structural diagram of an embodiment of a display device provided in the present application.

The application provides a display device, which comprises a display panel 100 and a camera module 400. The display panel 100 is the display panel 100 described above. The display panel 100 has oppositely disposed display sides 104 and non-display sides 105. The camera module 400 is disposed on the non-display side 105 of the display panel 100 and corresponds to the under-screen camera area 101.

The camera module 400 includes a camera. The camera is a front camera. When the camera is used, the under-screen camera area 101 does not display images, so that the camera can shoot; the under-screen camera area 101 can display images without using a camera, which can increase the screen duty ratio while retaining the camera function.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

The foregoing is only the embodiments of the present application, and therefore, the patent protection scope of the present application is not limited thereto, and all equivalent structures or equivalent processes using the contents of the present application specification and the drawings are included in the patent protection scope of the present application, or directly or indirectly applied to other related technical fields.

Claims (10)

1. A display panel for use in an under-screen camera display device, the display panel having an under-screen camera region; the under-screen camera shooting area comprises a pixel area and a light transmission area positioned at the side edge of the pixel area; characterized by comprising the following steps:

a pixel defining layer having a plurality of pixel openings arranged at intervals;

the pixel units are arranged in the pixel area of the under-screen shooting area; each of the pixel units includes:

the conductive enclosing structure protrudes from the pixel definition layer and encloses the pixel openings to form a plurality of pixel accommodating areas;

the sub-pixels are arranged in the pixel openings in a one-to-one correspondence manner and are arranged in the pixel accommodating areas in a one-to-one correspondence manner;

the conductive enclosure structure comprises an annular part and a plurality of dividing parts, and the cross section of the area enclosed by the annular part in the plane direction parallel to the pixel definition layer is circular or elliptical; the dividing part divides the area surrounded by the annular part to form a plurality of pixel accommodating areas which are arranged at intervals; defining the dividing part extending along the first direction as a first dividing part; in each pixel unit, the cathode of the sub-pixel in the pixel accommodating area is arranged by contacting with the adjacent first dividing part so as to realize the electric connection of the sub-pixel and the conductive enclosure structure.

2. The display panel according to claim 1, wherein the sub-pixel includes an anode, a light emitting layer, and the cathode, which are sequentially stacked; the cathode is evaporated on the surface of the light-emitting layer through an evaporation source, and the first direction is perpendicular to the scanning direction of the evaporation source.

3. The display panel according to claim 1, wherein the conductive enclosure structure includes a conductive portion and an insulating portion provided on an upper surface of the conductive portion and shielding the conductive portion; the insulating portion extends out of the conductive portion in a direction away from the conductive portion in a direction parallel to a plane of the pixel defining layer.

4. The display panel according to claim 3, further comprising a first conductive layer, a second conductive layer, and a third conductive layer which are sequentially stacked in a direction away from the pixel defining layer; the first conductive layer and the second conductive layer are both positioned in the pixel area, and the first conductive layer, the second conductive layer and the third conductive layer are laminated to form an auxiliary electrode and an anode of the sub-pixel, which are mutually insulated; the auxiliary electrode comprises a first connecting electrode and a second connecting electrode which are electrically connected with each other, the part of the third conductive layer, which is positioned in the pixel area, the second conductive layer and the first conductive layer are arranged in a laminated manner to form the first connecting electrode, and the part of the third conductive layer, which is positioned in the light transmission area, forms the second connecting electrode; the conductive part is electrically connected with the first connection electrode through a via hole on the pixel definition layer.

5. The display panel according to claim 4, wherein the second connection electrode is located between two adjacent pixel units and is used for electrically connecting the first connection electrodes of two adjacent pixel areas.

6. The display panel according to claim 4, wherein the first connection electrode is of a ring-shaped structure, and the conductive portion of the ring-shaped portion is electrically connected to the first connection electrode through a via hole on the pixel defining layer;

or alternatively, the first and second heat exchangers may be,

the first connecting electrode is of a net structure, and the conducting parts of the annular part and the conducting parts of the dividing part are electrically connected with the first connecting electrode through the through holes on the pixel definition layer.

7. The display panel according to claim 4, wherein the first conductive layer and the third conductive layer are each indium tin oxide, and the second conductive layer is a metal layer; the thickness of the third conductive layer is greater than or equal to 20 nanometers.

8. The display panel according to claim 1, wherein the remaining divided parts other than the first divided part are defined as second divided parts; the thickness of the first dividing part is greater than that of the second dividing part and greater than that of the annular part.

9. The display panel according to claim 1, wherein the pixel units are arranged in an array, and a cross section of an area surrounded by the annular portion in a plane direction parallel to the pixel defining layer is circular; defining the distance between two adjacent pixel units as a first value, and defining the radius of the circle as a second value; the first value is greater than or equal to half the second value and less than or equal to twice the second value.

10. An under-screen image pickup apparatus, comprising:

a display panel comprising the display panel of any one of claims 1 to 9; the display panel has a display side and a non-display side disposed opposite to each other;

the camera module is arranged on the non-display side of the display panel and corresponds to the under-screen camera area.