CN218917854U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN218917854U CN218917854U CN202222998173.XU CN202222998173U CN218917854U CN 218917854 U CN218917854 U CN 218917854U CN 202222998173 U CN202222998173 U CN 202222998173U CN 218917854 U CN218917854 U CN 218917854U
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Abstract
The utility model discloses a display panel and a display device, wherein the display panel is applied to the display device and comprises a cover plate, an adhesive layer, a back plate and a display assembly, the adhesive layer is coated on one side of the cover plate, the adhesive layer comprises a central area and an edge area which are integrally formed, the edge area is arranged around the central area, the periphery of the back plate is abutted with the edge area and is enclosed with the cover plate to form a mounting cavity, and the display assembly is arranged in the mounting cavity and is abutted with the central area. The utility model aims to enlarge the bonding area of the backboard and the cover plate glass by sharing the OCA optical cement, enhance the bonding strength and improve the reliability and the sealing performance of the product.
Description
Technical Field
The present utility model relates to the field of display technologies, and in particular, to a display panel and a display device using the same.
Background
In the liquid crystal display, different bonding modes are adopted between the components, for example, double-sided adhesive tape or water gel is generally adopted between the cover glass and the display shell, and OCA optical gel is adopted in the display area between the liquid crystal display component and the cover glass.
The cover plate glass is bonded with the display shell through double faced adhesive tape or water gel, more space is reserved for the display shell on the cover plate glass, the actual bonding area is smaller due to the flowability of the water gel and the difference of the double faced adhesive tape gluing process, the bonding strength of the display shell and the cover plate glass is lower, the separation between the display shell and the cover plate glass is easy to cause, and meanwhile, the sealing performance of a product is poorer.
Disclosure of Invention
The utility model mainly aims to provide a display panel and a display device, and aims to enlarge the bonding area of a back plate and cover plate glass, enhance bonding strength and improve product reliability and sealing performance by sharing OCA optical cement.
To achieve the above object, the present utility model provides a display panel including:
a cover plate;
the bonding layer is coated on one side of the cover plate and comprises a central area and an edge area which are integrally formed, and the edge area is arranged around the central area;
the periphery of the backboard is abutted with the edge area and forms a mounting cavity with the cover plate in a surrounding manner; a kind of electronic device with high-pressure air-conditioning system
The display assembly is arranged in the installation cavity and is abutted with the central area.
In an embodiment, a side of the cover plate facing the display assembly is a first surface, and a projection area of the adhesive layer on the cover plate is smaller than an area of the first surface.
In an embodiment, a projected area of the display assembly on the cover plate is smaller than or equal to a projected area of the central area on the cover plate.
In an embodiment, the width of the edge zone from the edge near one side of the central zone to the edge on the opposite side is 0.5mm to 2mm.
In an embodiment, the material of the adhesive layer is OCA optical cement;
and/or the adhesive layer has a thickness of 25 μm to 250 μm in a direction perpendicular to the first surface.
In an embodiment, a connection table is arranged at the periphery of the back plate, the connection table and the bottom of the back plate enclose to form the installation cavity, and the edge area is arranged on the connection table and covers the cavity opening of the installation cavity.
In an embodiment, a projection area of the cavity opening of the mounting cavity on the cover plate is greater than or equal to a projection area of the central area on the cover plate.
In one embodiment, the display assembly includes:
the light guide plate is arranged in the mounting cavity and is abutted against the back plate;
the display module is arranged between the light guide plate and the bonding layer and is connected with the central area; a kind of electronic device with high-pressure air-conditioning system
The light source is arranged on the side edges of the light guide plate and the display module, which face the connecting table; or, the light source is arranged on one side of the light guide plate facing the backboard and is abutted against the backboard.
In one embodiment, the display module includes:
a first polarizing film attached to a side of the light guide plate facing the adhesive layer;
the display unit is attached to one side of the first polarizing film, which is opposite to the light guide plate; a kind of electronic device with high-pressure air-conditioning system
And the second polarizing film is attached to one side of the display unit facing the cover plate and is connected with the central area.
The utility model also proposes a display device comprising a display panel as described in any one of the above.
According to the display panel, the adhesive layer is arranged on one side of the cover plate and used for adhering the display assembly and the backboard, so that the display assembly and the backboard share the same adhesive layer. The adhesive layer is divided into a central region and an edge region. The central area is used for bonding the display assembly, and the edge area is used for bonding the backboard. The arrangement can enlarge the bonding area of the back plate and the cover plate, strengthen the bonding strength, improve the reliability and the sealing performance of the product and reduce the intrusion of water vapor.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the utility model;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the utility model;
fig. 3 is an enlarged schematic view at a in fig. 2.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the |
| 100 | |
32 | |
| 1 | |
4 | Display assembly |
| 11 | A |
41 | |
| 2 | |
43 | |
| 21 | |
431 | |
| 22 | |
432 | First polarizing |
| 3 | |
433 | Second polarizing |
| 31 | Connecting table | 42 | Light source |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In the liquid crystal display, different bonding modes are adopted between the components, for example, double-sided adhesive tape or water gel is generally adopted between the cover glass and the display shell, and OCA optical gel is adopted in the display area between the liquid crystal display component and the cover glass.
The cover plate glass is bonded with the display shell through double faced adhesive tape or water gel, more space is needed to be reserved for the display shell on the cover plate glass, the actual bonding area is also smaller due to the flowability of the water gel and the difference of the double faced adhesive tape gluing process, the bonding strength of the display shell and the cover plate glass is lower, and the separation between the display shell and the cover plate glass is easy to cause.
Based on the above concepts and problems, the present utility model proposes a display panel 100. As can be appreciated, the display panel 100 is provided with the adhesive layer coated on the cover plate integrally divided into a central region and an edge region. The display assembly and the backboard share the same adhesive layer, so that the adhesive area between the backboard and the cover board is increased on the basis of reducing the material cost and simplifying the production process, the adhesive strength is effectively enhanced, and the reliability and the sealing performance of the product are improved. The OCA optical adhesive is adopted, so that the adhesive strength is further enhanced and is easy to repair due to the high viscosity and the integrally arranged adhesive layer, and the OCA optical adhesive also has good light permeability after light curing.
Referring to fig. 1 to 3 in combination, in an embodiment of the utility model, the display panel 100 is applied to a display device, the display panel 100 includes a cover plate 1, an adhesive layer 2, a back plate 3 and a display component 4, the adhesive layer 2 is coated on one side of the cover plate 1, the adhesive layer 2 includes a central area 21 and an edge area 22 which are integrally formed, the edge area 22 is disposed around the central area 21, the periphery of the back plate 3 is abutted with the edge area 22 and forms a mounting cavity 32 with the cover plate 1, and the display component 4 is disposed in the mounting cavity 32 and abutted with the central area 21.
In the present embodiment, the display panel 100 is provided with a cover plate 1, one side of the cover plate 1 is coated with an OCA optical adhesive layer, i.e., an adhesive layer 2, and the cover plate 1 provides a mounting base for the back plate 3 and the display assembly 4. It can be understood that the adhesive layer 2 is integrally coated on one side surface of the cover plate 1, so that the back plate 3 and the display assembly 4 can be adhered to the adhesive layer 2 at the same time, thereby achieving the purpose of sharing the adhesive layer 2. By the arrangement, the problems that in the prior art, a water gel or double-sided adhesive process is adopted between the back plate and the cover plate, a large gap is reserved for adhesion, and the actual adhesion area is small can be avoided, so that the actual adhesion area of the back plate 3 and the adhesion layer 2 is increased, the adhesion strength is effectively enhanced, the reliability of the whole product is improved, and the sealing performance of the whole display panel 100 is enhanced. Meanwhile, the adhesive layer 2 is integrally formed, so that the types and cost of materials used are reduced, and the production process and flow are greatly simplified.
In the present embodiment, the adhesive layer 21 is divided into a central region 21 and an edge region 22, wherein the edge region 22 is disposed around the central region 21, the geometric center of the central region 21 coincides with the geometric center of the cover plate 1, and the edge region 21 is disposed in an annular space formed between the central region 22 and the peripheral edge of the cover plate 1, and the central region 21 and the edge region 22 are integrally formed. Wherein, the periphery of backplate 3 is equipped with the boss that is connected with marginal zone 22 to form installation cavity 32 with apron 1 surrounding, display module 4 installs in installation cavity 32.
It will be appreciated that the display assembly 4 is bonded to the central region 22 in the adhesive layer 2 and that the backsheet 3 is bonded to the edge region 22 in the adhesive layer 2 at the edge regions 22. The back plate 3 and the display assembly 4 share an adhesive layer 2, and the back plate 3 is arranged around the display assembly 4. During the actual production process, the adhesive layer 2 located in the edge region 22 is covered with a protective film. Firstly, uniformly coating a layer of OCA optical cement on a cover plate 1 to form an adhesive layer 2. And then positioning is performed by a CCD (visual positioning recognition system) so that the display assembly 4 is accurately stuck to the position of the central area 21 so as to facilitate the subsequent curing of the adhesive layer by illumination. Then, the protective film on the edge area is torn off, the back plate 3 is bonded to the edge area 22 by positioning with a CCD (visual positioning recognition system), and then the adhesive layer is cured by illumination. By the arrangement, the material types and the cost are greatly reduced, and the assembly process and the production process flow are reduced. Meanwhile, the product reliability and sealing performance can be effectively improved by sharing the bonding layer.
The display panel 100 of the present embodiment is used for bonding the display assembly 4 and the back plate 3 by providing the adhesive layer 2 on one side of the cover plate 1, so that the display assembly 4 and the back plate 3 share one adhesive layer 2. The adhesive layer 2 is divided into a central region 21 and an edge region 22. Wherein the central area 21 is used for bonding the display assembly 4 and the edge areas 22 are used for bonding the back plate 3. The arrangement can enlarge the bonding area of the backboard 3 and the cover plate 1, enhance the bonding strength, improve the reliability and the sealing performance of the product and reduce the intrusion of water vapor.
In an embodiment, the side of the cover plate 1 facing the display component 4 is a first surface 11, and the projection area of the adhesive layer 2 on the cover plate 1 is smaller than the area of the first surface 11.
In this embodiment, as shown in fig. 1 to 3, a side of the cover plate 1 facing the display component 4 is defined as a first surface 11, and an area of the first surface 11 is an area of a maximum surface cross section of the cover plate 1. The projected area of the adhesive layer 2 facing the first surface 11 is smaller than the area of the first surface 11, and it is understood that the projected area of the adhesive layer 2 on the cover plate 1 is smaller than the area of the first surface 11. That is, the adhesive layer 2 is coated on the cover plate 1 in an area smaller than that of the first surface 11, and the adhesive layer 2 leaves a gap at the periphery of the cover plate 1, and is not coated. By this arrangement, the adhesive layer 2 is prevented from overflowing to the periphery of the cover plate 1 and being adhered together by contacting with the periphery of the back plate 3 during installation.
In one embodiment, the projected area of the display assembly 4 on the cover plate 1 is less than or equal to the projected area of the central region 21 on the cover plate 1.
It will be appreciated that, as shown in fig. 1 to 3, the projected area of the display assembly 4 facing the cover plate 1 should be smaller than or equal to the projected area of the central region 21 on the cover plate 1. That is, the central area 21 may entirely cover the display module 4, and the display module 4 is entirely adhered to the central area 21 by a CCD (visual positioning recognition system). The display assembly 4 is guaranteed to be accurately adhered to the central area 21, the installation accuracy is guaranteed, the follow-up deflection of the installation position of the backboard 3 caused by the deflection of the installation position of the display assembly 4 is avoided, and more space is reserved for the installation of the backboard 3.
In one embodiment, the edge region 22 has a width of 0.5mm to 2mm from the edge near one side of the central region 21 to the edge on the opposite side.
It will be appreciated that, as shown in fig. 1 to 3, the edge region 22 is provided in a ring shape, and the vertical width from the edge near the center region 21 to the edge of the adhesive layer 2 is between 0.5mm and 2mm, and the width of the edge region 22 is also different in the long side direction and the short side direction of the cover plate 1, so that the width of the edge region 22 is minimized under the premise of ensuring the adhesive strength to adapt to the trend of the narrow side frame of the display. The edge region 22 is arranged around the central region 21, i.e. the projection of the display element 4 onto the cover plate 1 coincides on the one hand with the central region 21, which projection on the other hand falls into the edge region 22. By the positioning of the projections, the edge area 22 and the central area 21 are kept in a certain position on the adhesive layer 2, ensuring that the back plate 3 and the display assembly 4 are accurately adhered to the edge area 22 and the central area 21.
In one embodiment, the material of the adhesive layer 2 is OCA optical cement. Alternatively, the adhesive layer 2 has a thickness of 25 μm to 250 μm in a direction perpendicular to the first surface 11. It can be understood that the adhesive layer 2 is made of OCA optical adhesive, which has high clarity, high light transmittance, high adhesion, high water resistance and high temperature resistance, and has controllable thickness, strong ultraviolet resistance, and no yellowing, peeling and deterioration after long-term use. Meanwhile, compared with other types of adhesives, the OCA optical adhesive is also convenient to repair. The adhesive layer 2 may be coated to a thickness of 25 μm, 50 μm, 100 μm, 175 μm, 200 μm or 250 μm.
In an embodiment, the periphery of the back plate 3 is provided with a connection table 31, the connection table 31 and the bottom of the back plate 3 enclose a mounting cavity 32, and the edge area 22 is disposed on the connection table 31 and covers the cavity opening of the mounting cavity 32. In this embodiment, as shown in fig. 3, the boss on the periphery of the back plate 3 is a connection table 31 for adhering to the edge region 22. The main structure of the backboard 3 is that the backboard cover and the connecting table 31 enclose to form a concave installation cavity 32, the installation cavity 32 and the cover plate 1 enclose together to form an installation cavity 32, and the installation cavity 32 is used for accommodating the display component 4. It will be appreciated that the back plate 3 has a wrapping and protecting effect on the display assembly 4, i.e. the back plate 3 is mounted to the periphery of the display assembly 4. Simultaneously, backplate 3 bonds with marginal district 22 through locating the connection platform 31 that the periphery, and the plane that connection platform 31 and marginal district 22 are bonded and the plane that display module 4 and central district 21 are bonded lie in the coplanar for backplate 3 and display module 4 share one deck adhesive linkage, effectively enlarge backplate and cover glass's bonding area, strengthen bonding strength, improve product reliability.
In one embodiment, the projected area of the mouth of the mounting cavity 32 on the cover plate 1 is greater than or equal to the projected area of the central region 21 on the cover plate 1. It will be appreciated that, as shown in fig. 3, the mounting cavity 32 is formed by enclosing the connection table 31 and the back plate 3, and the vertical projection area of the cavity opening of the mounting cavity 32 to the cover plate 1 should be greater than or equal to the area of the central area 21, so that the display assembly 4 can be placed in the cavity formed by the cavity opening of the mounting cavity 32 and the cover plate 1. At the same time, after the display assembly 4 is bonded in the central area 21, more space is left for bonding the back plate 3 and the edge area 22.
In one embodiment, the display assembly 4 includes a light guide plate 41, a display module 43 and a light source 42, wherein the light guide plate 41 is disposed in the mounting cavity 32 and is abutted against the back plate 3, the display module 43 is disposed between the light guide plate 41 and the adhesive layer 2 and is connected to the central area 21, and the light source 42 is disposed on a side of the light guide plate 41 and the display module 43 facing the connection table 31 (refer to fig. 1); or, the light source 42 is disposed on the side of the light guide plate 41 facing the back plate 3, and abuts against the back plate 3 (not shown).
In this embodiment, as shown in fig. 3, the display assembly 4 includes a light guide plate 41 near the bottom wall of the mounting cavity 32, a display module 43 adhered to the central area 21, and a light source 42 disposed on one side wall of the display module 43 and one end of the light guide plate 41, wherein one side of the display module 43 is adhered to the light guide plate 41, and the other side is connected to the central area 21. One end of the light source 42 is adhered to the side wall of the light guide plate 41, and the other end of the light source 42 is connected with the adhesive layer 2, so that the display assembly 4 can isolate the outside air under the sealing of the light source 42, and the invasion of water vapor is reduced. It can be understood that the display assembly 4 is used for displaying images, the light source 42 is used for emitting LED light, and a diffusion film is arranged on one side of the light guide plate 41 abutting against the light source 42, so that point light emitted by the light source 42 is diffused into plane light, and then reflected by a reflection film at the bottom of the light guide plate 41, so that the brightness is further enhanced. And then provides a light source for the display module 43. The light source 42 may be mounted on the side of the light guide plate 41 and the display module 43 facing the connection table 31; the light source 42 may be directly mounted between the light guide plate 41 and the back plate 3, and may be respectively abutted against the light guide plate 41 and the back plate 3.
In an embodiment, the display module 43 includes a display unit 431, a first polarizing film 432 and a second polarizing film 433, the first polarizing film 432 is attached to a side of the light guiding plate 41 facing the adhesive layer 2, the display unit 431 is attached to a side of the first polarizing film 432 facing away from the light guiding plate 41, and the second polarizing film 433 is attached to a side of the display unit 431 facing the cover plate 1 and is connected to the central area 21.
In this embodiment, as shown in fig. 3, the display unit 431 further includes a color film substrate, a thin film transistor layer and a liquid crystal layer, wherein the color film substrate is attached to the second polarizing film 433, the thin film transistor layer is attached to the first polarizing film 432, and the liquid crystal layer is located between the color film substrate and the thin film transistor layer. Meanwhile, the second polarizing film 433 is connected to the central region.
It can be understood that the display module 43 is a main component for generating an image, wherein the first polarizing film 432 and the second polarizing film 433 polarize the surface light emitted from the light guide plate 41, and realize on-off control of light, thereby generating an image. The first polarizing film 432 is used for converting a light beam generated by the backlight into polarized light, and the second polarizing film 433 is used for analyzing the polarized light electrically modulated by the display unit 431 to generate a contrast between brightness and darkness, so as to generate a display screen.
The utility model also provides a display device comprising the display panel 100. The specific structure of the display panel 100 refers to the foregoing embodiments, and since the present electronic system adopts all the technical solutions of all the foregoing embodiments, at least has all the beneficial effects brought by the technical solutions of the foregoing embodiments, which are not described in detail herein.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. A display panel, the display panel comprising:
a cover plate;
the bonding layer is coated on one side of the cover plate and comprises a central area and an edge area which are integrally formed, and the edge area is arranged around the central area;
the periphery of the backboard is abutted with the edge area and forms a mounting cavity with the cover plate in a surrounding manner; a kind of electronic device with high-pressure air-conditioning system
The display assembly is arranged in the installation cavity and is abutted with the central area.
2. The display panel of claim 1, wherein a side of the cover plate facing the display assembly is a first surface, and a projected area of the adhesive layer on the cover plate is smaller than an area of the first surface.
3. The display panel of claim 2, wherein a projected area of the display assembly on the cover plate is less than or equal to a projected area of the central region on the cover plate.
4. The display panel of claim 1, wherein the edge region has a width of 0.5mm to 2mm from an edge near one side of the center region to an edge at an opposite side.
5. The display panel according to claim 2, wherein the material of the adhesive layer is OCA optical adhesive;
and/or the adhesive layer has a thickness of 25 μm to 250 μm in a direction perpendicular to the first surface.
6. The display panel according to claim 1, wherein a connection table is arranged at the periphery of the back plate, the connection table and the bottom of the back plate enclose the mounting cavity, and the edge area is arranged on the connection table and covers the cavity opening of the mounting cavity.
7. The display panel of claim 6, wherein a projected area of an aperture of the mounting cavity on the cover plate is greater than or equal to a projected area of the central region on the cover plate.
8. The display panel of claim 6, wherein the display assembly comprises:
the light guide plate is arranged in the mounting cavity and is abutted against the back plate;
the display module is arranged between the light guide plate and the bonding layer and is connected with the central area; a kind of electronic device with high-pressure air-conditioning system
The light source is arranged on the side edges of the light guide plate and the display module, which face the connecting table; or, the light source is arranged on one side of the light guide plate facing the backboard and is abutted against the backboard.
9. The display panel of claim 8, wherein the display module comprises:
a first polarizing film attached to a side of the light guide plate facing the adhesive layer;
the display unit is attached to one side of the first polarizing film, which is opposite to the light guide plate; a kind of electronic device with high-pressure air-conditioning system
And the second polarizing film is attached to one side of the display unit facing the cover plate and is connected with the central area.
10. A display device, characterized in that the display device comprises the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222998173.XU CN218917854U (en) | 2022-11-09 | 2022-11-09 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222998173.XU CN218917854U (en) | 2022-11-09 | 2022-11-09 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218917854U true CN218917854U (en) | 2023-04-25 |
Family
ID=86016118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222998173.XU Active CN218917854U (en) | 2022-11-09 | 2022-11-09 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218917854U (en) |
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2022
- 2022-11-09 CN CN202222998173.XU patent/CN218917854U/en active Active
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