CN111929936A

CN111929936A - Display panel and display device

Info

Publication number: CN111929936A
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: 2020-11-13
Anticipated expiration: 2040-08-25
Also published as: CN111929936B

Abstract

The embodiment of the invention provides a display panel and a display device, wherein the display panel comprises a display area, a camera area and a non-display area, the camera area is positioned in the display area, and the non-display area surrounds the display area; the image pickup region comprises at least two light transmission regions and at least one point frame sealing glue, and the center of the at least one point frame sealing glue is positioned between the two adjacent light transmission regions in the arrangement direction of the two adjacent light transmission regions. According to the display panel and the display device provided by the embodiment of the invention, the point-sealed frame glue can well support the camera shooting 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 the CRT (Cathode Ray Tube) era to the liquid crystal era and now to the OLED (Organic Light-Emitting Diode) era, the display industry has been developing over decades. The display industry is related to the rest of our lives, and the display technology cannot be separated from the traditional mobile phones, the flat panels, the televisions and the PCs, and the current intelligent wearable devices and the VR and the like.

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

Disclosure of Invention

In view of the above, embodiments of the present invention provide a display panel and a display device.

The display panel provided by the embodiment of the invention comprises: the device 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 function 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 an accommodating space for accommodating a liquid crystal layer; the image pickup area comprises at least two light-transmitting areas, and the projections of the at least two light-transmitting areas on the array substrate or the color film substrate are circular; at least one point frame sealing glue arranged in the same layer with the main frame sealing glue; in the arrangement direction of the two adjacent light-transmitting areas, the center of at least one point frame sealing 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 have the advantages that the point frame sealing glue is arranged, so that a camera shooting area can be well supported in the thinning process, a uniform thinning effect can be obtained, a good optical effect can be kept after the display panel is finally made into the display device, 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 layout view along AA' of FIG. 1;

FIGS. 3A-3C are diagrams illustrating an actual thinning process of a display panel according to the prior art;

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

fig. 4B is a photographing optical path diagram when thinning is not uniform;

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

FIG. 6 is an enlarged schematic view of the display panel S of FIG. 5;

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

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

fig. 9 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention;

fig. 10 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention;

fig. 13 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention;

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

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

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

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.

It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and those skilled in the art will appreciate that it is possible to implement the invention in a number of ways without departing from the spirit and scope of the invention. The invention is therefore not limited to 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, the array substrate and the color film substrate are arranged oppositely, in order to achieve a shooting function, blind holes are formed in the liquid crystal display panel, and the camera is arranged below the display panel (for example, at the position of a mobile phone mainboard) and corresponds to the blind holes. In general, in a display area of a liquid crystal display panel, a support pillar is disposed between an array substrate and a color film substrate to prevent the liquid crystal display panel from deforming when receiving external pressure. In order to improve the shooting effect, no supporting column is arranged in the array substrate and the color film substrate in the blind hole region, and the array substrate and the color film substrate in the blind hole region can deform and collapse in the production process of the liquid crystal display panel.

Referring to fig. 1, fig. 1 is a schematic top view of a liquid crystal display device in the prior art, and fig. 2 is a schematic cross-sectional view 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 usually arranged around the display area 30 '. The non-display area 40' cannot be used for displaying due to the peripheral circuits, the driving circuits, the frame sealing adhesive and other elements. In the display region 30 ', an imaging region 20' is provided, and in the imaging region 20 ', a camera 50' is provided below the display panel. Since the camera 50 ' is located under the display panel 10 ', i.e., the side of the display panel 10 ' away from the user, when the camera is used for self-photographing, light needs to penetrate the display panel 10 ' to enter the camera 50 ', and is captured by the sensor. In order to ensure that light is transmitted without distortion, i.e., reflection and refraction occur as little as possible, elements affecting light, such as a Black Matrix (BM) and a Color Filter (CF), are removed from the camera area 20 'of the Color Filter substrate 12' during design. And in this region, a Spacer (PS) for support is also removed because, although the Spacer material is transparent, the Spacer material for the Spacer material has a refractive index different from that of the substrate and the liquid crystal, and the Spacer disposed therein affects the transmission of light, causing distortion in photographing. In the camera area 20 'of the array substrate 11', elements such as pixel circuits are removed. Thus, information such as a portrait is captured by the camera 50 'through the imaging area 20'.

Further, in the prior art, in order to meet the shooting requirements for 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 ' increases the area of the shooting area 20 ', and especially in the arrangement direction of the two cameras 50 ' (as shown in the figure, the connection direction of the areas where the two cameras are located, i.e. the horizontal direction), the width of the shooting area 20 ' is larger than that of the single-camera display device, and can generally reach a width of 4-10 mm. In addition, since the demand of users for thinning the display device is becoming stronger, the display panel needs to be thinned during the manufacturing process. In the prior art, in the display panel with two cameras under the screen, the image pickup area 20 'is not supported by a spacer, and the area of the image pickup area 20' for double image pickup is larger, so that the phenomenon of uneven thinning may occur in the thinning process.

Please refer to fig. 3A to fig. 3C, which are diagrams illustrating an actual thinning process of a display panel in the prior art. Please refer to fig. 3A, which is a schematic cross-sectional structure diagram of an un-thinned display panel placed in a thinning liquid. The color film substrate 12a 'and the array substrate 11 a' which are already formed into a box, namely, attached but not thinned, are placed into the thinning liquid. Typically, the thinning liquid may be a liquid 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 ' can maintain a normal appearance because the display area 30 ' is supported by the spacers 1241 ' with a high density (more than 100/square centimeter). In the imaging region 20', however, a collapse or a depression may be formed due to the lack of a material capable of supporting.

Fig. 3B shows a display panel that has been thinned in a thinning liquid in the prior art. Under the action of thinning hydraulic pressure, the surface appearances of the concave areas and the non-concave areas are different, so that the erosion rates of the thinning liquid to different areas are 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 from the array substrate 11' is a flat surface due to corrosion of the protective solution, and the surface of the color film substrate 12 'near the array substrate 11' is convex toward the array substrate due to a depression formed when the color film substrate is not thinned, and is always subjected to the pressure F of the thinning solution in the jewel process, so that after the display panel is thinned, the surface of the color film substrate 12 'near the array substrate 11' is still convex. Similarly, the surface of the array substrate 11 'away from the color filter substrate 12' is a flat surface, and the surface of the array substrate 11 'near the color filter substrate 12' is convex.

Fig. 3C shows the display panel after the thinning liquid is taken out after the thinning process in the prior art. After being taken out of the thinning liquid, the color film substrate 12 'and the array substrate 11' are no longer subjected to the pressure of the thinning liquid. Therefore, under the action of internal stress of the color film substrate and the array substrate, the appearance tends to recover to the original appearance. That is, the depression formed in the image pickup region 20 ' under the pressure of the thinning liquid is rebounded, and the display region 30 ' is still kept flat all the time due to the support of the spacer 1241 '. At this time, since the etching rate in the thinning liquid is different, and the imaging region 20' is protruded toward the inside of the liquid crystal cell while in the thinning liquid. After the pressure is lost, the originally inwardly convex portion of the image pickup region becomes outwardly convex (away from the liquid crystal layer 14'). That is, in the imaging region 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. Similarly, in the imaging region 20 ', a protrusion far from the color filter substrate 12' is formed on a surface of the array substrate 11 'far from the color filter substrate 12', and a surface of the array substrate 11 'near the color filter substrate 12' is a flat surface.

When the thinning is not uniform, the product photographed by the display device is adversely affected, and the photographed 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 when thinning is not uniform. Referring to fig. 4A, in an ideal case, the thickness of the array substrate 11 'is equal everywhere, and the thickness of the color filter substrate 12' is also equal everywhere. In the imaging region 20 ', the light beams L1 and L2 penetrate the array substrate 11 ', the liquid crystal layer, and the color film substrate 12 ' in parallel and perpendicularly. Since the incident angles of the light rays L1 and L2 are both 90 degrees, the light rays do not refract 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 cannot occur when an image is shot. Referring to fig. 4B, when thinning is not uniform, the thicknesses of the array substrate 11 'and the color filter substrate 12' are not uniform, the thickness of the imaging region 20 'is greater than that of the display region 30', and the thicknesses in the imaging region are not equal everywhere. The light L1 and the light L2 are incident in a direction perpendicular to the display panel, however, since the incident direction and the incident interface of the light are not perpendicular, the light L1 and the light L2 are refracted due to the difference between the refractive indexes of the two media. 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 emergent direction of the light are deflected, and therefore, the image pickup distortion and distortion are caused.

In order to improve the problem of uneven thinning of multiple cameras and improve the image pickup effect, an embodiment of the present invention provides a display panel, including: the device 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 function 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-transmitting areas, and the projections of the at least two light-transmitting areas on the array substrate or the color film substrate are circular; at least one point frame sealing glue arranged in the same layer with the main frame sealing glue; and in the arrangement direction of the two adjacent light transmission areas, the center of at least one point seal frame adhesive is positioned between the two adjacent light transmission areas. The center in this embodiment may be understood as a geometric center of the pattern, that is, a geometric center of an orthographic projection of the pattern on the color film substrate or the array substrate.

Referring to fig. 5, 6 and 7, fig. 5 is a display panel according to an embodiment of the present invention, fig. 6 is an enlarged structural schematic diagram of a region S of the display panel S in fig. 5, and fig. 7 is a schematic cross-sectional structural diagram along a section 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. There is typically a non-display area 40 surrounding the display area 30. The non-display area 40 cannot be used for displaying due to the peripheral circuits, the driving circuits, the frame sealing adhesive, and other elements. In the display area 30, the 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 the present embodiment, two light-transmitting areas 202 are provided in the imaging area 20, and the light-transmitting areas 202 are provided corresponding to the camera in the finally formed display device. In this embodiment, the number of the light-transmitting regions 202 is two, and the shape of the light-transmitting region is a circle. The size of the light-transmitting area 202 can be equivalent to the size of a lighting element of the camera, and is generally 3-5 mm.

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

In this embodiment, the array substrate 11 includes a first substrate 110, a driving function layer 112, and a first alignment layer 115. The driving function layer 112 is located between the first substrate 110 and the first alignment layer 115, and the first alignment layer 115 is located on one side of the array substrate 11 facing the color filter substrate 12. Specifically, the driving function layer may include a film layer in which each pixel can drive display, such as a gate layer including a scan line, a common electrode line, a driving signal line, and the like; the source drain layer comprises a data line, a source drain, a driving signal line and the like; a semiconductor layer; a pixel electrode layer; a common electrode layer and various insulating layers. In some 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 function layer is hollowed out at a position of the driving function layer 112 corresponding to the light-transmitting region 202 of the imaging region 20, that is, the metal film layer, such as a gate layer, a source/drain layer, a pixel electrode layer, and a common electrode layer, is not provided. This is because the camera needs to take images through the display panel, and these films are generally opaque metals, and the transmittance of the light-transmitting region 202 can be increased by taking out these films. Further, an opening region corresponding to the light-transmitting region 202 may be disposed on the dynamic function layer 112, and all film layers of the driving function layer 112, that is, the conductive function layer and the insulating film layer, may be excavated to further improve the transmittance. In the display region 30, the driving function layer has scan lines and data lines arranged in an insulating and intersecting manner, two adjacent scan lines and two adjacent data lines intersect 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, and then display is carried out.

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 filter substrate 12 includes a second substrate 120.

On a surface of the second substrate 120 on a side facing the array substrate 11, a light-shielding layer 121 is disposed, the light-shielding layer 121 including a first light-shielding portion 1211 located in the display region 30. The first light-shielding portion 1211 is also generally called a black matrix, and is provided with openings arranged in a matrix, each of which corresponds one-to-one to a sub-pixel formed on the array substrate 11, in a grid shape. The light-shielding layer 121 further includes a second light-shielding portion 1212, and the second light-shielding portion 1212 is provided in a region other than the light-transmitting region 202 of the imaging region 20. In this embodiment, the shape of the image capturing region 20 is defined by the second light shielding portion 1212, and in this embodiment, the image capturing region 20 includes two light transmission regions, so in this embodiment, the shape of the second light shielding portion 1212 is a rounded rectangle, and the rounded rectangle-shaped second light shielding portion 1212 is composed of two semicircular patterns and one rectangular pattern. The outline of the light-transmitting region 202 is arranged parallel to (concentric with) a semicircle of the second light-shielding portion 1212 having a rounded rectangle. The second light shielding portion 1212 is used to shield light rays 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 third light-shielding portions 1213, and the third light-shielding portions 1213 are located in the non-display area 40, covering the entire non-display area 40, for shielding light in the peripheral area.

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

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 is configured to shield light over 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 some other embodiments of the present invention, a color resist 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 made of an organic material and has a thickness larger than that of the color resist layer and the light shielding layer, thereby performing a surface planarization function. Since the display region is provided with both the light-shielding layer and the color resist layer between the planarizing layer 123 and the second substrate, 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 non-light-transmitting region of the imaging region 20, the film thickness differs between the planarizing layer 123 and the second substrate. By the planarizing layer 123, a surface having a more 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 that a relatively uniform liquid crystal box thickness is obtained. The spacer layer 124 includes a first spacer 1241 pillar located at the display area 30. The first spacers 1241 in the display region 30 are positioned to overlap the first light-shielding layer 1211 in a direction perpendicular to the color filter substrate. That is, the first spacer 1241 is located at the grid-shaped black matrix of the display area. The first spacer 1241 may be arranged at a predetermined distance in an arrangement direction along the sub-pixel row. The sub-pixel columns may be arranged at a predetermined distance from each other or may be arranged in a staggered manner. Further, the first spacer 1241 may further include a main pillar and a sub pillar. Second spacers 1242 are disposed in the opaque region of the image capturing area 20, and the second spacers 1242 may have the same arrangement rule as the first spacers 1241 or different arrangement rules. In the present embodiment, the density of the second spacers 1242 is greater than that of the first spacers 1241 in the non-light-transmitting region of the imaging region 20. Since the second light-shielding layer 1212 is provided in each imaging region, display is not required, and therefore, more spacers can be provided for supporting the liquid crystal cell. In general, the spacer material is also an organic material and has a certain elasticity, so that it can help the liquid crystal cell to return to the predetermined cell thickness after the display panel is deformed under pressure and the pressure is removed. In this embodiment, the projections of the first spacer 1241 and the second spacer 1242 on the color filter substrate are both circular, and the diameters thereof are about 6 to 8 micrometers. In the present embodiment, the extending 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 spacers can be disposed in this range for supporting.

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.

And frame sealing glue is also arranged between the array substrate 11 and the color film substrate. The frame sealing adhesive includes a main frame sealing adhesive 132 located in the non-display area 40 and a dot frame sealing adhesive 134 located in the image capturing area 20. The main frame sealing glue 132 is located in the non-display area 40, and surrounds the display area to form an accommodating space for accommodating the liquid crystal layer with the array substrate and the color film substrate. The main frame sealing adhesive 132 and the dot frame sealing adhesive 134 are both photosensitive curing materials, and during the process of forming the main frame sealing adhesive 132 and the dot frame sealing adhesive 134, material coating is performed first, and then Ultraviolet (UV) exposure is performed to complete curing. The hardness of the cured frame sealing glue is greater than that of the spacing layer. The width of the main frame sealing glue is limited by the coating machine, and is generally 0.6-1.2 mm.

The point-sealing frame glue is positioned in the non-light-transmitting area of the image pick-up area. Referring to fig. 6, in the embodiment, two dot sealant 134 are disposed in the non-light-transmitting area, and for any one dot sealant 134, it has two light-transmitting areas 202 adjacent to it, and in the arrangement direction of the two adjacent light-transmitting areas, the center of the dot sealant is located between the two adjacent light-transmitting areas 202. Thus, the image pickup region can be supported and prevented from being recessed in the panel thinning process in the arrangement direction of the light transmitting regions 202. Further, the dot frame sealant 134 is located on a symmetry axis of the illustrated vertical direction of the imaging region 20, and is disposed symmetrically with respect to the symmetry axis. Since the dot frame sealing adhesive 134 is also coated by the frame sealing adhesive coating machine, the width (diameter) of the dot frame sealing adhesive is the same as the width of the main frame sealing adhesive 132, and is also 0.6 to 1.2 mm. In this embodiment, the dot frame sealing glue 134, which is located on the symmetry axis of the image capturing area 20, can effectively support the image capturing area, and in the process of thinning the display panel, the effective support is given in the area where the maximum deformation is caused by the pressure of the thinning liquid, so as to improve the sag condition, and thin the display panel uniformly.

Further, in this embodiment, the image capturing region 20 has a first width and a second width, where the first width is a width along a first direction of an orthographic projection of the image capturing region 20 on the array substrate/color filter substrate, and the second width is a width along a second direction of the orthographic projection of the image capturing region 20 on the array substrate/color filter substrate, where the first direction is perpendicular to the second direction, and the first width is smaller than the second width. And the image pickup area has a first axis of symmetry and a second axis of symmetry, wherein the first axis of symmetry is perpendicular to the second axis of symmetry, and the first axis of symmetry extends in the same direction as the first direction, and the second axis of symmetry is in the same direction as the second direction. In this embodiment, the dot sealant is disposed on the first symmetry axis. That is, in this embodiment, the frame adhesive is disposed in the middle of the second width to balance the pressure in the longer second width direction, and the imaging area is effectively supported. That is, two dot sealant are disposed on a symmetrical line perpendicular to a central connecting line of the two light-transmitting regions 202, and the two dot sealant are symmetrical with respect to the symmetrical axis and symmetrical with respect to the central connecting line of the two light-transmitting regions 202.

At the periphery of the dot seal adhesive, there is a dot seal adhesive flaring region 134m, in which the second spacer 1242 is not disposed. The reason is that the dot frame sealing glue may overflow during the uncured process, and the expanded region may serve as an overflow safety region, so that even if the dot frame sealing glue overflows, the dot frame sealing glue is prevented from contacting other devices, and the display effect is affected. The maximum distance between the edge of the dot frame sealing glue outward expansion area 134m and the dot frame sealing glue 134 is less than 200 micrometers, so that the condition that too many camera areas 20 are occupied, the overall screen effect is not affected, and the screen occupation ratio is not affected is guaranteed.

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

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

Please refer to fig. 8A, which is a schematic diagram of an un-thinned display panel. The non-thinned array substrate 11a and the non-thinned color filter substrate 12a are arranged opposite to each other, a spacer is arranged between the non-thinned array substrate 11a and the non-thinned color filter substrate 12a in the display area 30, and dot seal adhesives 134 are arranged between the non-thinned array substrate 11a and the non-thinned color filter substrate 12a in the image pick-up area 20.

Fig. 8B is a schematic view of an un-thinned display panel being placed in a thinning liquid. The color film substrate 12a and the array substrate 11a which are formed into a box, that is, attached but not thinned, are placed into the thinning liquid. The thinning liquid may be the same as the prior art and will not be described in detail. 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 can maintain a normal appearance because the display area 30 is supported by the spacers with high density. In the image pickup area 20, since the dot frame sealing glue is disposed on the symmetry axis in the length direction of the image pickup area 20 and the hardness of the dot frame sealing glue is higher than that of the spacer, a good supporting effect can be achieved, and the image pickup area can maintain a normal shape without forming a recess.

Referring to fig. 8C, a thinned display panel in a thinning liquid according to the present embodiment is shown. Under the action of thinning hydraulic pressure, the image pickup area 20 and the display area 30 are both subjected to pressure from the thinning liquid, and the whole display panel keeps flat appearance due to the support of the spacer pillars and the support of the point frame sealing glue, so that each area is uniformly corroded in the thinning liquid, and the surface of one side of the array substrate 11, which is far away from the color film substrate 12, and the surface of one side of the color film substrate 12, which is far away from the array substrate 11, both form flat surfaces.

Referring to fig. 8D, the display panel is taken out of the thinning liquid after the thinning is completed. After being taken out of the thinning liquid, the color film substrate 12 and the array substrate 11 are no longer subjected to the pressure of the thinning liquid. Therefore, under the action of internal stress of the color film substrate and the array substrate, the appearance tends to recover to the original appearance. And because the display panel is not depressed due to pressure in the process of putting the display panel into the thinning liquid, the display panel does not have the tendency of forming bulges outwards, and the whole display panel still has a flat surface after being taken out of the thinning liquid. The array substrate 11 and the color film substrate 12 are thinned uniformly, so that a good optical effect can be kept after the display panel is finally made into a display device, and the shooting effect of the display device is improved.

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

Fig. 9 is a schematic diagram of a camera area of another display panel according to an embodiment of the present invention. 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 disposed on the same layer and have the same height. When the second spacer posts 1242 further include main posts and auxiliary posts, the height of the retaining walls 1243 may be the same as the height of the main posts. The retaining wall 1243 can further improve the supporting effect and prevent the sealant 134 from overflowing. Specifically, in this embodiment, the retaining walls 1243 further include a first retaining wall 1243a, a second retaining wall 1243b and a third retaining wall 1243 c. Taking the point sealant located above in fig. 9 as an example, the first retaining wall 1243a is disposed between one light-transmitting region 202 and the point sealant 134 and spans the position of the shortest distance between the point sealant 134 and the light-transmitting region 202; the second barrier 1243b is disposed between the other light-transmitting region 202 and the dot frame sealant 134 and crosses the position of the shortest distance between the dot frame sealant 134 and the light-transmitting region 202; the third blocking wall 1243c is disposed between the light-transmitting region 202 and the display region and crosses the position of the shortest distance between the sealant 134 and the display region. Furthermore, the width of the first retaining wall 1243a in the direction perpendicular to the shortest distance between the corresponding dot frame sealing glue and the light-transmitting area is greater than the diameter of the dot frame sealing glue; the width of the second barrier 1243b in the direction perpendicular to the shortest distance between the corresponding point frame sealing glue and the light-transmitting area is greater than the diameter of the point frame sealing glue; the third blocking wall 1243a has a width larger than the diameter of the dot frame sealing glue in a direction perpendicular to the shortest distance between the corresponding dot frame sealing glue and the display region. Therefore, the first retaining wall 1243a can effectively prevent the dot frame sealing adhesive from overflowing to the corresponding light-transmitting area, the second retaining wall 1243b can effectively prevent the dot frame sealing adhesive 134 from overflowing to the corresponding light-transmitting area, and the third retaining wall 1243c can effectively organize the dot frame sealing adhesive 134 from overflowing to the display area.

In this embodiment, the minimum distances between the first retaining wall 1243a, the second retaining wall 1243b, the third retaining wall 1243c and the dot frame sealing adhesive 134 are all greater than 200 μm, that is, the first retaining wall 1243a, the second retaining wall 1243b, and the third retaining wall 1243c are all located outside the dot frame sealing adhesive flaring area 134m, so as to avoid the retaining wall 124 from contacting the frame sealing adhesive as much as possible, which may affect the curing. In this embodiment, the width of the retaining wall itself may be the same as the diameter of the second spacer pillar 1242, i.e. 6 to 8 μm, so as to be prepared by the same process.

In this embodiment, the extending shape of the first retaining wall 1243a is the same as the profile of the corresponding light-transmitting region 202, that is, the extending shape of the first retaining wall 1243a is an arc, and the arc is concentric with the corresponding light-transmitting region 202; the extending shape of the second blocking wall 1243b is the same as the profile of the corresponding light-transmitting area 202, that is, the extending shape of the second blocking wall 1243b is an arc shape, and the arc shape is concentric with the corresponding light-transmitting area 202; the extending direction of the third blocking wall 1243c is the same as the profile of the corresponding display area, i.e. it is a straight line.

In other embodiments of the invention, the first retaining wall, the second retaining wall, and the third retaining wall may have other shapes, for example, please refer to fig. 10, which is a schematic diagram of a camera area of another display panel provided in an embodiment of the invention. In the embodiment shown in fig. 10, the first retaining wall 1243a extends in an arc shape, and the arc shape is concentric with the corresponding transparent region 202; the second wall 1243b is arc-shaped, and the arc shape is concentric with the corresponding light-transmitting area 202; the third wall 1243c is arc-shaped, and the arc is concentric with the corresponding dot sealant 134.

For another example, fig. 11 is a schematic view of an image capture region of another display panel according to an embodiment of the present invention. In the embodiment shown in fig. 11, the first retaining wall 1243a is arc-shaped, and the arc shape is concentric with the corresponding point sealant 134; the second wall 1243b is arc-shaped, and the arc shape is concentric with the corresponding point frame sealing glue 134; the third wall 1243c is arc-shaped, and the arc is concentric with the corresponding dot sealant 134.

Referring to fig. 12, fig. 12 is a schematic view of a camera area of another display panel according to an embodiment of the present invention. In this embodiment, a light-supplementing light-transmitting region 60 is further provided in the imaging region 20. This light filling light-transmitting area 60 is used for corresponding the setting with the light filling lamp in final display device, provides the light filling effect at the shooting in-process. Specifically, the light-filling light-transmitting region 60 is located between two adjacent light-transmitting regions 202. Further, the light source module can be located at the symmetric center of the two light-transmitting regions and at the symmetric center of the two adjacent dot sealant 134, so that the most uniform light supplement effect can be provided. The projection of the light-supplementing light-transmitting area on the array substrate/color film substrate is also circular, and the diameter of the light-supplementing light-transmitting area is smaller than that of the light-transmitting area 202. The structure of the light supplementing and transmitting area 60 is similar to that of the transmitting area 202, and on the array substrate, at least the metal film layer in the driving function layer is dug at the position corresponding to the light supplementing and transmitting area 60, and more closely, all the driving function layers at the corresponding position can be dug. On the color film substrate, at the position corresponding to the light supplement light transmission region 60, the light shield layer is removed, and the color resistance layer is not arranged, so that the light transmittance of the light supplement light transmission region 60 is improved to the greatest extent. In this embodiment, the arrangement of the dot frame sealing glue 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 no further description is provided herein, so reference may be made to related descriptions.

Referring to fig. 13, fig. 13 is a schematic view of a camera area of another display panel according to an embodiment of the present 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 the two light-transmitting areas can be directly connected at corresponding positions on the array substrate and the color film substrate in the process of manufacturing the three light-transmitting areas, and films needing to be excavated, such as metal films, light-shielding layers and the like which are correspondingly opposite to each other, are directly excavated, the structural design of non-excavated areas in adjacent excavated 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 a camera area of another display panel according to an embodiment of the present invention. In this embodiment, the shortest distance between two adjacent light-transmitting regions is greater than the diameter of any one light-transmitting region. This is because, in the final display device, the light-transmitting area 202 is disposed corresponding to the lighting element of the camera, the size of the lighting 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 that of the lighting element, so that the distance between two adjacent cameras and between two lighting elements is actually 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 subsequent corresponding camera. Since the size of the camera is usually 2 times of the lighting element, the distance between the two transparent regions 202 is set to be equal to the diameter of the transparent region 202, and the camera can be effectively mounted in the later period. In this embodiment, after the shortest distance between the two cameras is correspondingly increased, the size of the non-light-transmitting region between the two light-transmitting regions 202 is also increased, so that the size of the dot frame sealant can be further increased. In this embodiment, the diameter of the single dot sealant can be set to be equal to the radius of the light-transmitting region 202, i.e., 1.5-2.5 mm. In other embodiments of the present invention, an integral one-dot frame sealing adhesive may be further provided, that is, two-dot frame sealing adhesive is formed into a patterned integral frame sealing adhesive, and as long as the minimum distance between the finally formed dot frame sealing adhesive and the display area is greater than 200 μm, the relative position relationship between the dot frame sealing adhesive and the display area can be ensured to be relatively safe. When only one point frame sealing glue is arranged, the center of the point frame sealing glue is positioned between the two adjacent light-transmitting areas, and further, the point frame sealing glue can be symmetrical about a symmetry axis which is vertical to a central connecting line of the two light-transmitting areas and is also symmetrical about the central connecting line of the two light-transmitting areas.

Referring to fig. 15, fig. 15 is a schematic view of a camera area of another display panel according to an embodiment of the present invention. In this embodiment, the image capturing area 20 is a rounded triangle, and three light transmitting areas 202 are disposed in the image capturing area 20, so as to be used as a display panel solution of the multi-front camera display device. In this embodiment, for any two light-transmitting regions 202, the centers of the dot frame sealing glue arranged in the two light-transmitting regions fall in the arrangement direction of the two light-transmitting regions, between the two light-transmitting regions. Further, in the embodiment, the image capturing region 20 has a symmetry axis X, and a dot sealant 134 is disposed on the symmetry axis X, and the dot sealant 134 is symmetrical with respect to the symmetry axis X and is used for supporting the array substrate and the display panel. In this embodiment, for the design of the structures such as the supporting pillars, the light shielding layer, and the retaining walls, reference may be made to the description of other embodiments of the present invention, and further description is omitted here. Furthermore, in the present embodiment, only one dot sealant 134 is disposed, and the dot sealant 134 is disposed at the center of gravity of the image capturing region 20. Therefore, the dot frame sealant 134 of the present embodiment can balance the supporting forces in three directions, and obtain the best supporting effect.

Referring to fig. 16, fig. 16 is a schematic view of a camera area of another display panel according to an embodiment of the present invention. Compared with the embodiment shown in fig. 15, in the present embodiment, 4 points of the sealant 134 are provided, and any point of the sealant 134 can find the two light-transmitting regions 202 corresponding thereto, and in the arrangement direction of the two light-transmitting regions, the sealant 134 of any point falls between the two light-transmitting regions. Further, the sealant 134 at any point is symmetrical about a symmetry axis, which may be a symmetry axis perpendicular to the central connection line of the two corresponding light-transmitting regions 202, and is used for supporting the array substrate and the display panel. In this embodiment, for the design of the structures such as the supporting pillars, the light shielding layer, and the retaining walls, reference may be made to the description of other embodiments of the present invention, and further description is omitted here. Furthermore, two dot frame sealing adhesives are disposed between any two adjacent light-transmitting regions 202, and the centers of the two dot frame sealing adhesives 134 are located between the two light-transmitting regions in the arrangement direction of the two corresponding light-transmitting regions, so as to obtain a better supporting effect.

In other embodiments of the present invention, more light-transmitting regions, for example, four light-transmitting regions, may be included in the image capturing region. When the image pickup area comprises more light transmission areas, any two adjacent light transmission areas are provided with at least one point sealing frame glue in the arrangement direction of the two light transmission areas, and the center of the point sealing 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 more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all should be considered as belonging to the protection scope of the present invention.

Claims

1. A display panel, comprising:

the device 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 function 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 an accommodating space for accommodating a liquid crystal layer;

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

2. The display panel of claim 1, wherein:

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

3. The display panel of claim 2, wherein:

the at least one dot frame sealing glue is symmetrical with respect to the dot frame sealing 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 proof 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 dot frame sealing glue is arranged corresponding to the second shading part.

5. The display panel of claim 1, wherein:

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

the camera shooting region comprises at least one point frame sealing glue outward-expanding region, the at least one point frame sealing glue outward-expanding region is arranged around at least one point frame sealing glue, and the maximum distance between the edge of the point frame sealing glue outward-expanding region and the point frame sealing glue is larger than 200 micrometers; the second spacing columns are not arranged in the point frame sealing glue outward expansion area.

6. The display panel of claim 5, wherein:

the spacing layer also comprises retaining walls, and the retaining walls comprise first retaining walls and second retaining walls; the first retaining wall is positioned between at least one point-sealed frame glue and one light-transmitting area adjacent to the at least one point-sealed frame glue; the second barrier is positioned between at least one of the frame sealing glue and the other light-transmitting area adjacent to the at least one point frame sealing glue.

7. The display panel of claim 6, wherein:

the retaining wall further comprises a third retaining wall, and the third retaining wall is located at least one point-sealing frame glue and between the display areas.

8. The display panel according to claim 6 or 7, wherein the distance between the retaining wall and the corresponding dot frame sealing glue is greater than 200 micrometers.

9. The display panel of claim 1, wherein:

the number of the light-transmitting areas is two, and the number of the point-sealing frame glue is two;

and in the arrangement direction of the two dot frame sealing glue, the two dot frame sealing glue is positioned between the two light transmitting areas.

10. The display panel of claim 9, wherein:

the two point frame sealing glue are symmetrical about the central connecting line of the two light transmitting areas, and the two light transmitting areas are symmetrical about the central connecting line of the two point frame sealing glue.

11. The display panel of claim 9, wherein:

and a light supplementing and transmitting area is also arranged between the two transmitting areas.

12. The display panel of claim 1, wherein:

the transmittance of the array substrate region corresponding to the point-sealing frame glue is greater than 30%.

13. The display panel of claim 1, wherein:

the number of the light-transmitting areas is larger than two, at least two point frame sealing glue are arranged on any two adjacent light-transmitting areas in the arrangement direction, and the centers of the at least two point frame sealing glue are located between any two adjacent light-transmitting areas.

14. A display device comprising the display panel according to claim 1.