CN111929936B

CN111929936B - Display panel and display device

Info

Publication number: CN111929936B
Application number: CN202010862675.2A
Authority: CN
Inventors: 金慧俊; 姜炜; 张劼
Original assignee: Shanghai AVIC Optoelectronics Co Ltd
Current assignee: Shanghai AVIC Optoelectronics Co Ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2023-05-02
Anticipated expiration: 2040-08-25
Also published as: CN111929936A

Abstract

The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a display area, a shooting area and a non-display area, the shooting area is positioned in the display area, and the non-display area surrounds the display area; the image pickup area comprises at least two light-transmitting areas and at least one spot-sealing frame glue, wherein the center of the at least one spot-sealing frame glue is positioned between the two adjacent light-transmitting areas in the arrangement direction of the two adjacent light-transmitting areas. According to the display panel and the display device provided by the embodiment of the invention, the spot seal frame glue can well support the image pickup area in the thinning process, and a good thinning effect can be obtained.

Description

Display panel and display device

Technical Field

The present invention relates to the field of display technologies, and in particular, to a display panel and a display device.

Background

From CRT (Cathode Ray Tube) age to liquid crystal age to the now coming OLED (Organic Light-Emitting Diode) age, the display industry has undergone decades of development to become more and more varied. The display industry has been closely related to our lives, from traditional mobile phones, tablets, televisions and PCs, to current smart wearable devices and VR, etc., without the display technology.

With the increasing abundance of information, the requirements of consumers on display are further improved, for example, the screen occupation ratio is improved, more consultations can be displayed under the same size of terminal equipment, and how to further improve the screen occupation ratio and the display effect of the full screen is a main technical problem in the current display field.

Disclosure of Invention

In view of the above, the embodiment of the invention provides a display panel and a display device.

The display panel provided by the embodiment of the invention comprises: the camera comprises a display area, a camera shooting area and a non-display area, wherein the camera shooting area is positioned in the display area, and the non-display area surrounds the display area; the array substrate comprises a first substrate, a driving functional layer and a first alignment layer; the color film substrate comprises a second substrate, a shading layer, a color resistance layer and a second alignment layer; the frame sealing glue comprises main frame sealing glue and is positioned in the non-display area; the array substrate, the color film substrate and the frame sealing glue form a containing space for containing a liquid crystal layer; the image pickup area comprises at least two light transmission areas, and the projections of the at least two light transmission areas on the array substrate or the color film substrate are circular; at least one point seal frame glue is arranged on the same layer as the main seal frame glue; and in the arrangement direction of two adjacent light-transmitting areas, the center of at least one spot sealing frame glue is positioned between the two adjacent light-transmitting areas.

The display device provided by the embodiment of the invention comprises the display panel.

Compared with the prior art, the display panel and the display device provided by the embodiment of the invention can well support the image pickup area in the thinning process due to the arrangement of the spot frame sealing glue, so that a uniform thinning effect can be obtained, and after the display panel is finally manufactured into the display device, a good optical effect can be maintained, and the shooting effect of the display device is improved.

Drawings

FIG. 1 is a schematic top view of a prior art LCD device;

FIG. 2 is a cross-sectional structural design along AA' of FIG. 1;

FIGS. 3A to 3C are views illustrating a practical thinning process of a display panel according to the prior art;

fig. 4A is a shooting optical path diagram in an ideal state;

fig. 4B is a photographic light path diagram when thinning is uneven;

fig. 5 is a schematic diagram of a display panel according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the area S of the display panel shown in FIG. 5;

FIG. 7 is a schematic cross-sectional view of the structure of FIG. 6 taken along section BB';

fig. 8A to 8D are schematic views illustrating a thinning process of the display panel according to the present embodiment;

fig. 9 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

Fig. 10 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 11 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 12 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 13 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 14 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 15 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention;

fig. 16 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a further description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

It is noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

The liquid crystal display panel comprises an array substrate, a color film substrate and liquid crystal filled between the array substrate and the color film substrate, wherein the array substrate and the color film substrate are oppositely arranged, blind holes are formed in the liquid crystal display panel for achieving shooting functions, and a camera is arranged below the display panel (for example, at the position of a mobile phone main board) corresponding to the blind holes. In general, a support column is disposed between the array substrate and the color film substrate in a display area of the liquid crystal display panel, so as to avoid deformation of the liquid crystal display panel when the liquid crystal display panel receives external pressure. In order to improve the shooting effect, the array substrate and the color film substrate in the blind hole area are not provided with support columns, and in the production process of the liquid crystal display panel, the array substrate and the color film substrate in the blind hole area can deform and collapse.

Referring to fig. 1, fig. 1 is a schematic top view of a liquid crystal display device in the prior art, and referring to fig. 2, fig. 2 is a cross-sectional structural design along AA' in fig. 1. In the prior art, the display panel 10' of the display device is provided with a display area 30', the display area 30' is used for displaying pictures, and a non-display area 40' is generally provided around the display area 30 '. The non-display area 40' cannot be used for display due to the provision of peripheral circuits, driving circuits, frame sealing glue, etc. In the display area 30', an imaging area 20' is provided, and in the imaging area 20', a camera 50' is provided below the display panel. Since the camera 50' is located below the display panel 10', i.e., on the side of the display panel 10' away from the user, when used for self-photographing, light needs to penetrate the display panel 10' to enter the camera 50' and be captured by the sensor. In order to avoid distortion, i.e. minimize reflection and refraction, during the light transmission, the components affecting the light, such as Black Matrix (BM) and Color Filter (CF), are removed in the camera area 20 'of the Color Filter substrate 12' during the design. And in this area, the spacers (PS) for support are also removed, because, although the Spacer material is transparent, the spacers are provided for the difference in refractive index from the substrate and the liquid crystal, and thus the transmission of light is affected, resulting in photographing distortion. In the camera region 20 'of the array substrate 11', the pixel circuit and other elements are removed. Thus, information such as a person image is captured by the camera 50 'through the imaging area 20'.

Further, in the prior art, in order to meet the requirements for shooting with respect to resolution and depth of field, in the display device, two front cameras 50' are usually disposed, and the arrangement of the two front cameras 50' causes an increase in the area of the image capturing area 20', especially in the arrangement direction of the two cameras 50' (as shown, the direction of the line where the two cameras are located, i.e. the horizontal direction), the width of the image capturing area 20' is larger than that of the single-camera display device, and can reach a width of 4-10 mm. In addition, there is an increasing demand for thinning the display device by users, and thus, the display panel is required to be thinned during the manufacturing process. In the prior art, the display panel with two cameras under the screen has no spacer support in the image capturing area 20', and the area of the image capturing area 20' with two cameras is larger, so that the phenomenon of uneven thinning may occur in the thinning process.

Please refer to fig. 3A to 3C, which are diagrams illustrating a practical thinning process of a display panel in the prior art. Fig. 3A is a schematic cross-sectional view of an un-thinned display panel placed in a thinning liquid. The color film substrate 12a 'and the array substrate 11a' which have been formed into a cartridge, that is, have been attached but not thinned, are put into a thinning liquid. Typically, the thinning liquid may be a liquid that is corrosive to the substrate, such as a solution containing hydrofluoric acid. When the display panel is placed in the thinning liquid, the display panel is subjected to the pressure F of the thinning liquid, and the display area 30' is supported by the spacers 1241' having a high density (100 pieces/cm or more), so that the display area 30' can maintain a normal shape. And in the camera area 20', a collapse or recess may be formed due to the lack of material capable of supporting.

Referring to fig. 3B, a display panel in which thinning has been completed in a thinning liquid in the prior art is shown. Under the action of the thinning hydraulic pressure, the surface topography of the concave area is different from that of the non-concave area, so that the corrosion rate of the thinning liquid to different areas is different in the thinning process. Finally, the thinned display panel can form a relatively flat surface in the thinning liquid. The surface of the color film substrate 12 'far away from the array substrate 11' is a flat surface due to corrosion of the protective liquid, and the surface of the color film substrate 12 'near the array substrate 11' is convex due to the concave formed when the surface is not thinned, and is always subjected to the pressure F of the thinning liquid in the process of bloom, so that after the display panel is thinned, the surface of one side of the color film substrate 12 'near the array substrate 11' is still convex. Similarly, the surface of the side of the array substrate 11 'far from the color film substrate 12' is a flat surface, and the surface of the side of the array substrate 11 'near to the color film substrate 12' is convex.

Referring to fig. 3C, a display panel after thinning is completed and then removed from the thinning liquid in the prior art is shown. After the color film substrate 12 'and the array substrate 11' are taken out from the thinning liquid, the pressure of the thinning liquid is no longer applied. Therefore, under the action of internal stress of the color film substrate and the array substrate, the appearance tends to return to the original appearance. That is, the depression formed in the image pickup area 20' by the pressure of the thinning liquid springs back, and the display area 30' remains flat all the time due to the support of the spacer 1241 '. At this time, the imaging region 20' protrudes into the liquid crystal cell due to the difference in etching rate in the thinning liquid and the presence of the thinning liquid. After the pressure is lost, the originally inwardly convex portion of the image pickup area becomes convex outward (away from the liquid crystal layer 14'). That is, in the image capturing area 20', a protrusion far from the array substrate 11' is formed on a surface of the color film substrate 12 'far from the array substrate 11', and a surface of the color film substrate 12 'near the array substrate 11' is a flat surface. In the same way, in the image capturing area 20', a protrusion far from the color film substrate 12' is formed on a surface of one side of the array substrate 11 'far from the color film substrate 12', and a surface of one side of the array substrate 11 'near the color film substrate 12' is a flat surface.

When the thinning is uneven, adverse effects on the shot product of the display device are caused, and the shot image is distorted and distorted. Referring to fig. 4A and 4B, fig. 4A is a photographing optical path diagram in an ideal state, and fig. 4B is a photographing optical path diagram in case of thinning unevenness. Referring first to fig. 4A, in an ideal case, the thicknesses of the array substrate 11 'and the color film substrate 12' are equal everywhere. In the image pickup region 20', the light rays L1 and L2 penetrate the array substrate 11', the liquid crystal layer, and the color film substrate 12' in parallel and vertically. Because the incident angles of the light rays L1 and L2 are 90 degrees, refraction does not occur in the process of passing through the air-array substrate interface, the array substrate-liquid crystal interface, the liquid crystal-color film substrate interface and the color film substrate-air interface, and the incident light and the emergent light of the light rays L1 and L2 are transmitted in parallel, so that distortion and distortion do not occur when an image is shot. Referring to fig. 4B, in case of uneven thinning, the thicknesses of the array substrate 11 'and the color film substrate 12' are uneven, the thickness of the image capturing area 20 'is greater than the thickness of the display area 30', and the thicknesses are not equal everywhere in the image capturing area. The light L1 and the light L2 are incident in a direction perpendicular to the display panel, however, since the incident direction of the light and the incident interface are not perpendicular, the light L1 and the light L2 are refracted due to the refractive index difference of the two mediums. Therefore, light is refracted at the air-array substrate interface, the array substrate-liquid crystal interface, the liquid crystal-color film substrate interface and the color film substrate-air interface. The incident direction and the final outgoing direction of the light are deflected, and thus image capturing distortion and distortion are caused.

In order to improve the problem of uneven thinning of multiple cameras and improve the imaging effect, an embodiment of the present invention provides a display panel, which includes: the camera comprises a display area, a camera shooting area and a non-display area, wherein the camera shooting area is positioned in the display area, and the non-display area surrounds the display area; the array substrate comprises a first substrate, a driving functional layer and a first alignment layer; the color film substrate comprises a second substrate, a shading layer, a color resistance layer and a second alignment layer; the frame sealing glue comprises main frame sealing glue and is positioned in the non-display area; the array substrate, the color film substrate and the frame sealing glue form a containing space for containing a liquid crystal layer; the image pickup area comprises at least two light transmission areas, and the projections of the at least two light transmission areas on the array substrate or the color film substrate are circular; at least one point seal frame glue is arranged on the same layer as the main seal frame glue; and in the arrangement direction of two adjacent light-transmitting areas, the center of at least one spot sealing frame glue is positioned between the two adjacent light-transmitting areas. The center of the embodiment is understood to be the geometric center of the pattern, i.e. the geometric center of the orthographic projection of the pattern on the color film substrate or the array substrate.

Referring to fig. 5, 6 and 7, fig. 5 is an enlarged schematic view of a display panel S in fig. 5, fig. 6 is a schematic view of a cross-section along BB' in fig. 6.

In the present embodiment, the display panel 10 is provided with a display area 30, and the display area 30 is used for displaying a screen. Surrounding the display area 30 is typically a non-display area 40. The non-display area 40 cannot be used for display due to the provision of peripheral circuits, driving circuits, frame sealing glue, and the like. In the display area 30, an imaging area 20 is provided, and in the imaging area 20, a camera is provided below the display panel in the final display device. In order to ensure the shooting quality of the camera, in this embodiment, two light-transmitting areas 202 are disposed in the shooting area 20, and the light-transmitting areas 202 are disposed corresponding to the camera in the display device formed finally. In this embodiment, the number of the light-transmitting areas 202 is two, and the shape of the light-transmitting area is circular. The size of the light-transmitting region 202 may be equivalent to the size of the lighting element of the camera, and is generally 3-5 mm.

In the present embodiment, the image capturing area 20 is located in the display area 30, that is, the image capturing area 20 is surrounded by the display area 30, and each of the edges of the image capturing area 20 is in contact with the display area 30. In other embodiments of the present invention, the image capturing area 20 may also be located between the display area 30 and the non-display area 40, that is, the edge portion of the image capturing area 20 contacts the display area 30 and the non-display area 40.

In this embodiment, the array substrate 11 includes a first substrate 110, a driving functional layer 112, and a first alignment layer 115. The driving functional layer 112 is located between the first substrate 110 and the first alignment layer 115, and the first alignment layer 115 is located at a side of the array substrate 11 facing the color film substrate 12. Specifically, the driving functional layer may include a film layer, for example, a gate layer including a scan line, a common electrode line, a driving signal line, and the like, in which each pixel can drive display; the source-drain electrode layer comprises a data line, a source-drain electrode, a driving signal line and the like; a semiconductor layer; a pixel electrode layer; and a common electrode layer and various insulating layers. In other embodiments of the present invention, the driving function layer 112 may further include a film layer such as a touch function layer.

At least the metal film layer of the driving functional layer 112 is hollowed out, i.e., no metal film layer such as a gate layer, a source drain layer, a pixel electrode layer, and a common electrode layer is provided at a position of the driving functional layer 112 corresponding to the light-transmitting region 202 of the image pickup region 20. This is because, since the camera needs to take an image through the display panel, these films are generally made of opaque metal, and the transmittance of the light transmitting region 202 can be improved by taking out these films. Further, the opening area corresponding to the light transmission area 202 may be disposed on the active functional layer 112, and all the film layers of the active functional layer 112, that is, the conductive functional layer and the insulating film layer, may be removed to further improve the transmittance. In the display area 30, the driving functional layer has scan lines and data lines arranged in an insulating and crossing manner, two adjacent scan lines and two adjacent data lines cross each other to form a sub-pixel, and a transistor and a pixel electrode are disposed in each sub-pixel. An electric field is formed between the pixel electrode and the common electrode to drive the liquid crystal to rotate, thereby performing display.

The first alignment layer 115 covers the entire array substrate, and the first alignment layer 115 is used for matching with the second alignment layer 125 on the color film substrate to align the liquid crystal molecules in the liquid crystal layer 14.

The color film substrate 12 includes a second substrate 120.

On a side surface of the second substrate 120 facing the array substrate 11, a light shielding layer 121 is provided, the light shielding layer 121 including a first light shielding portion 1211 located in the display area 30. The first light shielding portion 1211, which is also commonly referred to as a black matrix, is provided with openings arranged in a matrix, each opening corresponding to one of the sub-pixels formed on the array substrate 11. The light shielding layer 121 further includes a second light shielding portion 1212, and the second light shielding portion 1212 is disposed in an area of the image capturing area 20 other than the light transmitting area 202. In this embodiment, the shape of the image capturing area 20 is defined by the second light shielding portion 1212, and in this embodiment, the image capturing area 20 includes two light transmitting areas, so in this embodiment, the shape of the second light shielding portion 1212 is a rounded rectangle, and the second light shielding portion 1212 of the rounded rectangle is composed of two semicircular patterns and one rectangular pattern. The outline of the light-transmitting region 202 is arranged parallel (concentric) to the semicircle of the second light-shielding portion 1212 of the rounded rectangle. The second light shielding portion 1212 is configured to shield light in a region other than the light transmitting region 202 corresponding to the camera when the display panel displays, so as to avoid light leakage. The light shielding layer 121 further includes a third light shielding portion 1213, the third light shielding portion 1213 being located in the non-display area 40, covering the entire non-display area 40 for shielding the peripheral area from light.

The light shielding layer 121 is disposed on a side far from the second substrate 120, and the color blocking layer 122 further includes a first color resistor 1221, a second color resistor 1222 and a third color resistor 1223. The first color resistor 1221, the second color resistor 1222 and the third color resistor 1223 have different colors, and light emitted from the backlight of the display device can form different colors of light after passing through the color resistor layer, and color display is realized by the proportion of the different colors of light. The first color resistor 1221, the second color resistor 1222 and the third color resistor 1223 are disposed in the matrix-shaped openings of the first light shielding portion 1211 and are disposed in one-to-one correspondence with the sub-pixels on the array substrate 11. Three adjacent sub-pixels corresponding to color resistances of different colors form a pixel P, and light emitting display is performed through the principle of three primary colors. In other embodiments of the invention, a pixel may also include other numbers of sub-pixels, such as two, four.

In this embodiment, the color resist layer is provided only in the display region 30, and the color resist layer 122 is not provided at the position corresponding to the second light shielding portion 1212, because the second light shielding portion has a structure of shielding light from the entire surface except for the light transmitting region, and is not used for display, and therefore the color resist layer may not be provided. Of course, in other embodiments of the present invention, a color blocking layer may be disposed at a position corresponding to the second light shielding portion 1212, so as to make the thickness of the entire color film substrate more uniform.

On the side of the color resist layer 122 away from the second substrate 120, a planarization layer 123 is covered. The planarization layer 123 is disposed on the whole surface, and is made of an organic material, and has a thickness thicker than that of the photoresist layer and the light shielding layer, so that the planarization layer can play a role in surface planarization. Between the planarization layer 123 and the second substrate, since the display region is provided with both the light shielding layer and the color resist layer, and the light shielding layer and the color resist layer are not provided in the light transmitting region 202, and the light shielding layer is provided in the light non-transmitting region of the image capturing region 20, the film thickness is different between the planarization layer 123 and the second substrate. By planarizing the layer 123, a surface having a relatively uniform thickness can be obtained.

On the side of the planarization layer 123 remote from the second substrate 120, a spacer layer 124 is provided. The spacer layer 124 is used for supporting after the array substrate 11 and the color film substrate 12 are aligned and attached, so as to obtain a relatively uniform thickness of the liquid crystal cell. The spacer layer 124 includes first spacer posts 1241 located in the display region 30. The first spacer 1241 in the display area 30 is located at a position overlapping the first light shielding layer 1211 in a direction perpendicular to the color film substrate. That is, the first spacer 1241 is located at the grid-like black matrix of the display area. The first spacer columns 1241 may be arranged at a predetermined distance in an arrangement direction along the sub-pixel rows. The sub-pixel rows may be arranged at a predetermined distance or staggered in the arrangement direction along the sub-pixel rows. Further, the first spacer 1241 may further include a main pillar and an auxiliary pillar. In the opaque region of the image capturing area 20, second spacer columns 1242 are disposed, and the second spacer columns 1242 may have the same arrangement rule as the first spacer columns 1241 or may have different arrangement rules. In the present embodiment, in the opaque region of the image capturing area 20, the density of the second spacer 1242 is greater than that of the first spacer 1241. Since the second light shielding layers 1212 are provided in the image pickup region, display is not required, and thus more spacer columns may be provided for supporting the liquid crystal cell. In general, the spacer layer is also an organic material, and has a certain elasticity, so that it can help the liquid crystal cell recover to a predetermined cell thickness after the display panel is deformed by pressure and the pressure is removed. In this embodiment, the projections of the first spacer 1241 and the second spacer 1242 on the color film substrate are all circular, and the diameter thereof is about 6-8 μm. In the present embodiment, the extension width of the second light shielding portion 1212 (i.e. the distance between the semicircular edge of the second light shielding portion 1212 and the edge of the light transmitting region) at the periphery of the light transmitting region 202 is 300 micrometers to 600 micrometers, so that more spacing columns can be provided for supporting in this range.

On the side of the spacer layer 124 remote from the second substrate 120, a second alignment layer 125 is provided for aligning the liquid crystal molecules in the liquid crystal layer 14 together with the first alignment layer.

A frame sealing adhesive is also arranged between the array substrate 11 and the color film substrate. The frame seal includes a main frame seal 132 located in the non-display area 40 and a spot seal 134 located in the image capture area 20. The main seal frame adhesive 132 is located in the non-display area 40 and disposed around the display area, and is used for forming a containing space with the array substrate and the color film substrate for containing the liquid crystal layer. The main seal frame glue 132 and the spot seal frame glue 134 are photosensitive curing materials, and in the process of forming the main seal frame glue 132 and the spot seal frame glue 134, the materials are coated first, and then Ultraviolet (UV) exposure is performed to complete curing. The hardness of the cured frame sealing glue is larger than that of the spacing layer. The width of the main frame sealing glue is limited by a coating machine and is generally 0.6-1.2 mm.

The spot seal frame glue is positioned in a non-light-transmitting area of the image pickup area. Referring to fig. 6, in the present embodiment, two spot-sealing frame adhesives 134 are disposed in the non-transparent area, and for any spot-sealing frame adhesive 134, two transparent areas 202 adjacent to the spot-sealing frame adhesive are disposed, and in the arrangement direction of the two adjacent transparent areas, the center of the spot-sealing frame adhesive is located between the two adjacent transparent areas 202. Thus, the imaging region can be supported in the arrangement direction of the light transmitting regions 202 during panel thinning, preventing dishing. Further, the spot seal frame glue 134 is located on the symmetry axis of the image capturing area 20 in the illustrated vertical direction, and is symmetrically disposed about the symmetry axis. Since the spot seal molding compound 134 is also applied by the molding compound coater, the width (diameter) of the spot seal molding compound is the same as the width of the main molding compound 132, and is also 0.6 to 1.2 mm. In this embodiment, the spot seal frame glue 134 is located on the symmetry axis of the image capturing area 20, and can effectively support the image capturing area, and in the process of thinning the display panel, the area with the greatest deformation under the pressure of the thinning liquid is effectively supported, so as to improve the recession condition, and make the display panel thinner uniformly.

Further, in the present embodiment, the image capturing area 20 has a first width and a second width, wherein the first width is a width of the image capturing area 20 projected on the array substrate/color film substrate along a first direction, and the second width is a width of the image capturing area 20 projected on the array substrate/color film substrate along a second direction, wherein the first direction is perpendicular to the second direction, and the first width is smaller than the second width. The image capturing area is provided with a first symmetrical axis and a second symmetrical axis, wherein the first symmetrical axis is perpendicular to the second symmetrical axis, the extending direction of the first symmetrical axis is the same as the first direction, and the second symmetrical axis is the same as the second direction. In this embodiment, the spot seal frame glue is disposed on the first symmetry axis. That is, in this embodiment, the spot seal frame glue is disposed at the middle position of the second width, so as to balance the longer pressure in the second width direction, and effectively support the image capturing area. That is, on a symmetry line perpendicular to the central connection line of the two light-transmitting regions 202, two spot-sealing frame glues are disposed, and the two spot-sealing frame glues are symmetrical about the symmetry axis and symmetrical about the central connection line of the two light-transmitting regions 202.

At the periphery of the spot seal, there is a spot seal expansion area 134m in which the second spacer 1242 is not provided. The reason is that the spot sealing frame glue may have overflow condition in the uncured process, and the expansion area can be used as an overflow safety area, so that even if the spot sealing frame glue overflows, the spot sealing frame glue can be prevented from contacting other devices, and the display effect is affected. The maximum distance between the edge of the spot seal frame glue expanding area 134m and the spot seal frame glue 134 is less than 200 micrometers, so that the situation that too many camera shooting areas 20 are not occupied, the overall screen effect is not influenced, and the screen occupation ratio is not influenced is ensured.

In this embodiment, since the image capturing area 20 is a rounded rectangle, there are two rectangular edges along the arrangement direction of the light transmitting areas, and there are two non-light transmitting areas with larger areas between the two rectangular edges and the two light transmitting areas, and two substantially triangular areas, and the spot seal sealant can be disposed in the two areas. Because the outward expansion area of the spot seal frame glue needs to be ensured, the minimum distance between the spot seal frame glue and the display area is more than 200 microns, and the minimum distance between the spot seal frame glue and any light transmission area is more than 200 microns, so that the overflow part of the spot seal frame glue does not enter the display area or the light transmission area even if the spot seal frame glue overflows.

The technical effects of the present embodiment will be described with reference to fig. 8A to 8D. Fig. 8A to 8D are schematic views illustrating a thinning process of the display panel according to the present embodiment.

Please refer to fig. 8A, which is a schematic diagram of an un-thinned display panel. The non-thinned array substrate 11a is disposed opposite to the non-thinned color film substrate 12a, a spacer is disposed between the non-thinned array substrate 11a and the non-thinned color film substrate 12a in the display region 30, and a spot seal sealant 134 is disposed between the non-thinned array substrate 11a and the non-thinned color film substrate 12a in the image pickup region 20.

Fig. 8B is a schematic diagram of an un-thinned display panel placed in the thinning liquid. The color film substrate 12a and the array substrate 11a which have been formed into a cartridge, that is, have been attached but not thinned, are put into a thinning liquid. The thinning liquid can be the same as the prior art and will not be described again. When the display panel is placed in the thinning liquid, the display panel is subjected to the pressure F of the thinning liquid, and the display area 30 is supported by the spacers having a high density, so that the display area 30 can maintain a normal shape. In the image capturing area 20, since the spot seal sealant is disposed in the embodiment and is located on the symmetry axis of the image capturing area 20 in the length direction, and the hardness of the spot seal sealant is higher than that of the spacing columns, the image capturing area can have a good supporting effect, and the image capturing area can also keep a normal shape, so that a recess is not formed.

Referring to fig. 8C, a thinned display panel in a thinning liquid according to the present embodiment is shown. Under the action of the thinning hydraulic pressure, the image pickup area 20 and the display area 30 are subjected to pressure from the thinning liquid, and the whole display panel is kept in a flat shape due to the support of the spacing columns and the support of the spot seal frame glue, so that each area is uniformly corroded in the thinning liquid, and a flat surface is formed on one side surface of the array substrate 11 far away from the color film substrate 12 and one side surface of the color film substrate 12 far away from the array substrate 11.

Referring to fig. 8D, a display panel after thinning and taking out from the thinning liquid according to the present embodiment is provided. After the color film substrate 12 and the array substrate 11 are taken out from the thinning liquid, the pressure of the thinning liquid is no longer applied to the color film substrate. Therefore, under the action of internal stress of the color film substrate and the array substrate, the appearance tends to return to the original appearance. The display panel is not depressed due to pressure during the process of placing the display panel into the thinning liquid, so that the display panel has no tendency of forming protrusions outwards, and the whole display panel still has a flat surface after the display panel is taken out of the thinning liquid. The array substrate 11 and the color film substrate 12 are uniformly thinned, and after the display panel is finally manufactured into the display device, good optical effects can be maintained, so that the shooting effect of the display device is improved.

Further, in this embodiment, since the frame sealing glue needs to be cured by light, in order to prevent light leakage between the frame sealing glue (including the main frame sealing glue 132 and the spot frame sealing glue 134) and the array substrate, the light shielding layer 121 is disposed, and light cannot penetrate through the light shielding layer 121 to reach the uncured frame sealing glue. Therefore, light is required to be irradiated from one side of the array substrate to one side of the color film substrate so as to cure the frame sealing adhesive. In this embodiment, between the main seal frame glue, the spot seal frame glue and the first substrate, except for the metal film layer, the rest film layers are light-transmitting film layers, so that in order to ensure the curing effect, the driving functional layer 112 can be patterned at the positions corresponding to the main seal frame glue and the spot seal frame glue, for example, the processes of grooving, slotting and the like are performed, so that the light transmittance of the positions corresponding to the main seal frame glue and the spot seal frame glue is improved. Experiments prove that when the basic transmittance of the array corresponding to the main frame sealing glue and the spot frame sealing glue is more than 30%, a better frame sealing glue curing effect can be obtained.

Referring to fig. 9, a schematic view of an image capturing area of another display panel according to an embodiment of the present invention is shown. For other area structures of the display panel provided in this embodiment, reference may be made to descriptions in other embodiments of the present invention, and details are not repeated here.

In this embodiment, a retaining wall 1243 is further disposed on the spacer layer of the color film substrate. The retaining wall 1243 and the second spacer 1242 are arranged in the same layer and have the same height. When the second spacer 1242 further includes a main post and an auxiliary post, the height of the retaining wall 1243 may be the same as the height of the main post. The retaining wall 1243 can further improve the supporting effect and prevent the spot seal frame glue 134 from overflowing. Specifically, in the present embodiment, the retaining wall 1243 further includes a first retaining wall 1243a, a second retaining wall 1243b and a third retaining wall 1243c. For example, the first retaining wall 1243a is disposed between a light-transmitting region 202 and the frame sealing compound 134 and spans the shortest distance between the frame sealing compound 134 and the light-transmitting region 202 in fig. 9; the second retaining wall 1243b is disposed between the other light-transmitting region 202 and the spot-sealing frame glue 134, and spans the position of the shortest distance between the spot-sealing frame glue 134 and the light-transmitting region 202; the third retaining wall 1243c is disposed between the light-transmitting area 202 and the display area and spans the shortest distance between the sealant 134 and the display area. Furthermore, the width of the first retaining wall 1243a is larger than the diameter of the spot seal frame glue in the direction perpendicular to the shortest distance between the spot seal frame glue and the light transmission area; the width of the second retaining wall 1243b is larger than the diameter of the spot seal frame glue in the direction perpendicular to the shortest distance between the corresponding spot seal frame glue and the light transmission area; the third retaining wall 1243a has a width larger than the diameter of the spot seal frame glue in a direction perpendicular to the shortest distance between the spot seal frame glue and the display area. Therefore, the first retaining wall 1243a can effectively prevent the sealant from overflowing to the corresponding light-transmitting area, the second retaining wall 1243b can effectively prevent the sealant 134 from overflowing to the corresponding light-transmitting area, and the third retaining wall 1243c can effectively organize the sealant 134 to overflow to the display area.

In this embodiment, the minimum distances between the first, second and

third retaining walls

1243a, 1243b and 1243c and the frame sealing glue 134 are greater than 200 micrometers, i.e. the first, second and

third retaining walls

1243a, 1243b and 1243c are located outside the frame sealing glue expansion areas 134m, so as to avoid the contact between the retaining walls 124 and the frame sealing glue as much as possible, and influence the poor curing. In this embodiment, the width of the retaining wall itself may be the same as the diameter of the second spacer 1242, i.e., 6-8 microns, to be manufactured by the same process.

In this embodiment, the extension shape of the first retaining wall 1243a is the same as the outline of the corresponding light-transmitting region 202, i.e. the extension shape of the first retaining wall 1243a is an arc, and the arc is concentric with the corresponding light-transmitting region 202; the extension shape of the second retaining wall 1243b is the same as the outline of the corresponding light-transmitting region 202, that is, the extension shape of the second retaining wall 1243b is an arc, and the arc is concentric with the corresponding light-transmitting region 202; the third retaining wall 1243c has a linear extension direction identical to the outline of the corresponding display area.

In other embodiments of the present invention, the first, second and third retaining walls may have other shapes, for example, please refer to fig. 10, which is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention. In the embodiment shown in fig. 10, the extending shape of the first retaining wall 1243a is an arc, and the arc is concentric with the corresponding light-transmitting area 202; the second retaining wall 1243b has an arc shape, and the arc shape is concentric with the corresponding light-transmitting area 202; the third retaining wall 1243c has an arc shape, and the arc shape is concentric with the corresponding spot sealing frame glue 134.

Fig. 11 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention. In the embodiment shown in fig. 11, the extending shape of the first retaining wall 1243a is an arc, and the arc is concentric with the corresponding spot-sealing frame glue 134; the second retaining wall 1243b has an arc shape, and the arc shape is concentric with the corresponding spot sealing frame glue 134; the third retaining wall 1243c has an arc shape, and the arc shape is concentric with the corresponding spot sealing frame glue 134.

Referring to fig. 12, fig. 12 is a schematic view of an image capturing area of another display panel according to an embodiment of the invention. In this embodiment, a light-supplementing light-transmitting region 60 is further provided in the imaging region 20. The light-supplementing light-transmitting region 60 is used for providing a light supplementing effect in the shooting process in the final display device and is arranged corresponding to the light supplementing lamp. Specifically, the light-supplementing light-transmitting region 60 is located between two adjacent light-transmitting regions 202. Further, the light-supplementing device can be positioned at the symmetrical center of the two light-transmitting areas and at the symmetrical center of the two adjacent spot-sealing frame adhesives 134, so that the most uniform light-supplementing effect can be provided. The projection of the light-supplementing transparent region on the array substrate/color film substrate is also circular, and the diameter of the light-supplementing transparent region is smaller than that of the transparent region 202. The structure of the light-supplementing light-transmitting region 60 is similar to that of the light-transmitting region 202, and on the array substrate, at least the metal film layer in the driving functional layer is dug out at the corresponding position, and all the driving functional layers at the corresponding position can be dug out further. On the color film substrate, the light shielding layer is removed at the position corresponding to the light-supplementing transparent region 60, and no color resistance layer is provided, so as to improve the light transmittance of the light-supplementing transparent region 60 to the greatest extent. In this embodiment, regarding the placement of the spot-sealing compound 134, the first retaining wall 1243a, the second retaining wall 1243b, the third retaining wall 1243c and other elements may be the same as those in other embodiments of the present invention, and the description thereof will not be repeated herein.

Referring to fig. 13, fig. 13 is a schematic view illustrating an image capturing area of another display panel according to an embodiment of the invention. Compared with the embodiment shown in fig. 12, the two light-transmitting areas 202 are directly connected with the light-supplementing light-transmitting area 60, so that in the process of manufacturing the three light-transmitting areas, the two light-transmitting areas can be directly connected at corresponding positions on the array substrate and the color film substrate, and the film layers, which are required to be dug, of the corresponding opposite metal film layers, the light-shielding layers and the like are directly dug, so that the structural design of non-dug areas in the adjacent dug areas is omitted, the design and process difficulty is reduced, and the production efficiency is improved.

Referring to fig. 14, fig. 14 is a schematic view of an image capturing area of another display panel according to an embodiment of the invention. In this embodiment, the shortest distance between two adjacent light-transmitting areas is larger than the diameter of any one light-transmitting area. This is because, in the final display device, the light-transmitting area 202 is disposed corresponding to the light-collecting element of the camera, the size of the light-collecting element is generally 2 mm to 5 mm, and the camera is an optical element formed by multiple optical lenses, and the size of a single camera is larger than the size of the light-collecting element thereof, so that, between two adjacent cameras, the distance between two light-collecting elements is limited by the overall size of the camera, that is, the shortest distance between two light-transmitting areas 202 is limited by the size of the corresponding cameras. Since the size of the camera is usually 2 times that of the lighting element, the distance between the two light-transmitting areas 202 is set to be equal to the diameter of the light-transmitting area 202, and the camera can be effectively installed in the later stage. In this embodiment, after the shortest distance between the two cameras is correspondingly increased, the size of the non-light-transmitting area between the two light-transmitting areas 202 is also increased, so that the size of the spot seal can be further increased. As in the present embodiment, the diameter of the single spot seal may be set to be equivalent to the radius of the light-transmitting region 202, i.e., 1.5 to 2.5 mm. In other embodiments of the present invention, an integral sealant may be further provided, that is, two sealant are formed into a patterned integral sealant, so long as the minimum distance between the finally formed sealant and the light-transmitting area 202 is ensured to be greater than 200 micrometers, and the relative positional relationship between the sealant and the light-transmitting area and the display area can be ensured. When only one spot sealing frame glue is arranged, the center of the spot sealing frame glue is positioned between two adjacent light-transmitting areas, and further, the spot sealing frame glue can be symmetrical about a symmetrical axis perpendicular to the central connecting line of the two light-transmitting areas and symmetrical about the central connecting line of the two light-transmitting areas.

Referring to fig. 15, fig. 15 is a schematic view of an image capturing area of another display panel according to an embodiment of the present invention. In this embodiment, the image capturing area 20 is rounded triangle, and three light transmitting areas 202 are disposed in the image capturing area 20, which is used as a display panel solution of the multi-front camera display device. In this embodiment, for any two light-transmitting areas 202, the center of the sealant is located between the two light-transmitting areas in the arrangement direction of the two light-transmitting areas. Further, in the present embodiment, the image capturing area 20 has a symmetry axis X, on which a sealant 134 is disposed, and the sealant 134 is symmetrical about the symmetry axis X, for supporting the array substrate and the display panel. For the design of the structures such as the supporting columns, the light shielding layer, the retaining wall, etc., reference may be made to the description of other embodiments of the present invention, and the description thereof will not be repeated here. Further, in the present embodiment, only one spot seal frame glue 134 is provided, and the spot seal frame glue 134 is disposed at the center of gravity of the image capturing area 20. Therefore, the spot seal frame glue 134 of the present embodiment can balance the supporting forces in three directions, so as to obtain the best supporting effect.

Referring to fig. 16, fig. 16 is a schematic view of an image capturing area of another display panel according to an embodiment of the invention. Compared with the embodiment of fig. 15, in this embodiment, 4 spot-sealing frame adhesives 134 are provided, and any spot-sealing frame adhesive 134 can find two light-transmitting areas 202 corresponding to the spot-sealing frame adhesive, and in the arrangement direction of the two light-transmitting areas, any spot-sealing frame adhesive 134 falls between the two light-transmitting areas. Further, the sealant 134 is symmetrical about a symmetry axis, which may be a symmetry axis perpendicular to the central lines of the two corresponding light-transmitting regions 202, for supporting the array substrate and the display panel. For the design of the structures such as the supporting columns, the light shielding layer, the retaining wall, etc., reference may be made to the description of other embodiments of the present invention, and the description thereof will not be repeated here. Further, two spot sealing frame glues are disposed between any two adjacent light-transmitting areas 202, and the centers of the two spot sealing frame glues 134 are located between the two light-transmitting areas in the arrangement direction of the two corresponding light-transmitting areas, so as to obtain better supporting effect.

In other embodiments of the present invention, more light-transmitting regions, such as four, may be included in the image capture area. When the image pickup area comprises a plurality of light transmission areas, any two adjacent light transmission areas are arranged, at least one point seal frame glue is arranged in the arrangement direction of the two light transmission areas, and the center of the point seal frame is positioned between the two light transmission areas and used for obtaining a supporting effect so as to enable thinning to be uniform in the thinning process.

The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.

Claims

1. A display panel, comprising:

the camera comprises a display area, a camera shooting area and a non-display area, wherein the camera shooting area is positioned in the display area, and the non-display area surrounds the display area;

the array substrate comprises a first substrate, a driving functional layer and a first alignment layer; the color film substrate comprises a second substrate, a shading layer, a color resistance layer and a second alignment layer; the frame sealing glue comprises main frame sealing glue and is positioned in the non-display area; the array substrate, the color film substrate and the frame sealing glue form a containing space for containing a liquid crystal layer;

the image pickup area comprises at least two light transmission areas, and the projections of the at least two light transmission areas on the array substrate or the color film substrate are circular; at least one point seal frame glue is arranged on the same layer as the main seal frame glue; in the arrangement direction of two adjacent light-transmitting areas, the center of at least one spot sealing frame glue is positioned between the two adjacent light-transmitting areas;

The spacer layer comprises a first spacer column and a second spacer column; the first spacing columns are positioned in the display area; the second spacing columns are positioned in the image pickup area;

the camera shooting area comprises at least one point seal frame glue expanding area, the at least one point seal frame glue expanding area is arranged around at least one point seal frame glue, and the maximum distance between the edge of the point seal frame glue expanding area and the point seal frame glue is larger than 200 microns; the second spacing columns are not arranged in the spot seal frame glue expanding area.

2. The display panel of claim 1, wherein:

the two adjacent light-transmitting areas are provided with a symmetry axis perpendicular to the central connecting line of the two adjacent light-transmitting areas, and the at least one spot sealing frame glue is positioned on the symmetry axis.

3. The display panel of claim 2, wherein:

the at least one point seal frame glue is symmetrical with respect to the point seal frame glue.

4. The display panel of claim 1, wherein:

the light shielding layer comprises a first light shielding part, a second light shielding part and a third light shielding part; the first shading part is positioned in the display area and comprises openings which are arranged in a proving way; the second shading part is positioned in the image pickup area; the third shading part is positioned in the non-display area;

The at least one spot sealing frame glue is arranged corresponding to the second shading part.

5. The display panel of claim 1, wherein:

the spacer layer further comprises a retaining wall, wherein the retaining wall comprises a first retaining wall and a second retaining wall; the first retaining wall is positioned between at least one point sealing frame glue and the light-transmitting area adjacent to the point sealing frame glue; the second retaining wall is positioned between at least one frame sealing glue and the other light-transmitting area adjacent to the at least one point frame sealing glue.

6. The display panel of claim 5, wherein:

the retaining wall further comprises a third retaining wall, and the third retaining wall is located between at least one of the spot sealing frame glue and the display area.

7. The display panel of claim 5 or 6, wherein the distance between the retaining wall and the corresponding spot seal is greater than 200 microns.

8. The display panel of claim 1, wherein:

the number of the light-transmitting areas is two, and the number of the spot seal frame adhesives is two;

and in the arrangement direction of the two spot sealing frame adhesives, the two spot sealing frame adhesives are positioned between the two light-transmitting areas.

9. The display panel of claim 8, wherein:

The two spot sealing frame glues are symmetrical about the central connecting line of the two light transmission areas, and the two light transmission areas are symmetrical about the central connecting line of the two spot sealing frame glues.

10. The display panel of claim 8, wherein:

and a light supplementing and transmitting region is arranged between the two light transmitting regions.

11. The display panel of claim 1, wherein:

the transmittance of the array substrate area corresponding to the spot seal frame glue is more than 30%.

12. The display panel of claim 1, wherein:

the number of the light-transmitting areas is greater than two, at least two point seal frame adhesives are arranged in the arrangement direction of any two adjacent light-transmitting areas, and the centers of the at least two point seal frame adhesives are located between any two adjacent light-transmitting areas.

13. A display device comprising the display panel of claim 1.