Fitting structure of cover plate and display module
By designing the avoidance groove on the cover assembly and using a concave-convex connection structure with double-sided sticks of foam, the poor display effect caused by the thickness of the air layer in the traditional bonding method is solved, and a higher transmittance and dust protection effect is achieved. , similar to the full bonding effect of optical glue, while reducing costs.
Patent Information
- Application Number
- CN202420768121.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The bonding method between the traditional cover plate and the display module results in thicker intermediate air layer, increasing reflectivity and reducing transmittance, affecting the display effect.
There is a evacuation groove on the cover assembly, and the adhesive is embedded in the groove, combined with the double-sided concave and convex connection structure of foam, reducing the thickness of the intermediate air layer and preventing dust from entering.
It effectively reduces reflected light, improves transmittance, enhances display effect, and improves dustproof effect, similar to the full bonding effect of optical glue, while saving costs.
Smart Images
Figure CN222356734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display module production and manufacturing, in particular to a fitting structure of a cover plate and a display module. Background Art
[0002] In the manufacturing process of display modules, traditional cover plates and display modules are usually frame-bonded (bonded with double-sided adhesive on all sides, without optical adhesive in the middle, but an air layer will be generated in the middle, which will increase the reflected light of the middle layer, affect the overall transmittance, and result in poor display effect). That is, they are bonded and fixed by double-sided adhesive. The double-sided adhesive usually selected is relatively thick, with a total thickness of more than 0.3mm, which will make the middle air layer thicker, resulting in higher reflectivity and lower transmittance, and thus resulting in poor display effect of the display screen. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a fitting structure between a cover plate and a display module, thereby improving the display effect.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A bonding structure of a cover plate and a display module comprises: a cover plate assembly and a display module, the cover plate assembly comprising a cover plate body and an adhesive, the cover plate body is provided with a frame area and a display area, the frame area is arranged around the four sides of the display area, and a avoidance groove is opened on the frame area, one side of the adhesive is attached to the avoidance groove, and the thickness of the adhesive is greater than the depth of the avoidance groove; the other side of the adhesive is attached to a side surface of the display module, so that the display module is connected to the cover plate body.
[0006] In one embodiment, the avoidance groove is a frame-shaped structure, and the adhesive component includes a plurality of foam double-sided adhesives, each of the foam double-sided adhesives is connected end to end in sequence to form a frame-shaped structure, and one side of each of the foam double-sided adhesives is respectively attached to the avoidance groove, wherein the connection area of every two adjacent foam double-sided adhesives is a concave-convex connection structure.
[0007] In one embodiment, four foam double-sided adhesive tapes are provided, and the connection area of every two adjacent foam double-sided adhesive tapes is a concave-convex connection structure.
[0008] In one embodiment, a gap greater than or equal to 0.3 mm is formed between every two adjacent double-sided adhesive foams.
[0009] In one embodiment, the thickness of the adhesive is 0.1 mm greater than the depth of the avoidance groove.
[0010] In one embodiment, the thickness of the adhesive is 0.3 mm, and the depth of the avoidance groove is 0.2 mm.
[0011] In one embodiment, the width of the avoidance groove is 0.3 mm larger on one side than the width of the adhesive.
[0012] In one of the embodiments, a black ink layer is provided on the border area.
[0013] In one of the embodiments, a black ink layer is respectively provided on the bottom and surrounding side walls of the avoidance groove.
[0014] In one of the embodiments, a shell frame is provided on the display module, one side of the adhesive is attached to the avoidance groove, and the other side of the adhesive is attached to the shell frame.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] 1. The fitting structure of the cover plate and the display module of the utility model is provided with a cover plate assembly and a display module, and a avoidance groove is opened on the cover plate body, so that the adhesive can be accommodated in the avoidance groove, thereby reducing the thickness of the adhesive. Then, after the cover plate body and the display module are bonded and fixed by the adhesive, the distance between the cover plate body and the display module is greatly reduced, so that the air layer in the middle is the thinnest, the reflected light will be less, the transmittance will be higher, and the display effect will be better.
[0017] 2. The fitting structure between the cover plate and the display module of the utility model is achieved through an adhesive (multiple foam double-sided adhesives), that is, the connection area between every two foam double-sided adhesives is a concave-convex connection structure, thereby preventing dust from entering the display area, that is, reducing the amount of dust entering and increasing the yield rate; in addition, the concave-convex connection structure of the foam double-sided adhesive, combined with the design of the avoidance groove, can further improve the dustproof effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 It is a structural schematic diagram of the bonding structure of the cover plate and the display module in one embodiment of the utility model;
[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the cover plate assembly of the bonding structure of the cover plate and the display module;
[0021] Figure 3 for Figure 2A schematic structural diagram of the cover body of the cover assembly in FIG. DETAILED DESCRIPTION
[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0023] See also Figure 1 , Figure 2 and Figure 3 As shown, a bonding structure 10 of a cover plate and a display module includes: a cover plate assembly 100 and a display module 200, the cover plate assembly 100 includes a cover plate body 110 and an adhesive 120, a frame area and a display area are provided on the cover plate body 110, the frame area is arranged around the four sides of the display area, and an avoidance groove 111 is opened on the frame area, one side of the adhesive 120 is attached to the avoidance groove 111, and the thickness of the adhesive 120 is higher than the depth of the avoidance groove 111; the other side of the adhesive 120 is attached to a side surface of the display module 200, so that the display module 200 is connected to the cover plate body 100.
[0024] It should be noted that in order to reduce the distance between the cover body 110 and the display module 200, thereby further reducing the thickness of the intermediate air layer between the cover body 110 and the display module 200, an avoidance groove 111 is provided on the frame area of the cover body 110, and the adhesive 120 is embedded in the avoidance groove 111. Then, after the cover body 110 and the display module 200 are connected, the intermediate air layer between the cover body 110 and the display module 200 can be thinned, so that less light can be reflected and the transmittance can be higher, thereby improving the display effect. In addition, it should be noted that the utility model adopts a frame-sticking method, so there is no need to use optical glue, so it can not only save costs, but also make the display effect close to the display effect of full bonding of optical glue.
[0025] In one embodiment, the avoidance groove 111 is a frame-shaped structure, and the adhesive 120 includes a plurality of foam double-sided adhesives, each of which is connected end to end in sequence to form a frame-shaped structure, and one side of each foam double-sided adhesive is respectively attached to the avoidance groove, wherein the connection area between every two adjacent foam double-sided adhesives is a concave-convex connection structure.
[0026] It should be noted that conventional foam double-sided adhesive tapes usually directly use four straight edges, so there will be a gap between two adjacent foam double-sided adhesive tapes (because there are tolerances in cutting and bonding, it is necessary to ensure that there is a gap between two adjacent foam double-sided adhesive tapes). In this way, it is easy for dust to enter between the cover body 110 and the display module 200 through the gap, thereby causing black spots or gray spots on the display surface and other undesirable problems, affecting the viewing experience. Therefore, in this embodiment, by setting the connection area of two adjacent foam double-sided adhesive tapes as a concave-convex connection structure, it can prevent dust from entering the display area, that is, reduce the amount of dust entering and increase the yield rate; in addition, the concave-convex connection structure of the foam double-sided adhesive tape, combined with the design of the avoidance groove, can further improve the dustproof effect.
[0027] See also Figure 2 As shown, four foam double-sided adhesives are provided, and the connection area of every two adjacent foam double-sided adhesives is a concave-convex connection structure. Specifically, the adhesive member 120 includes a first foam double-sided adhesive 121, a second foam double-sided adhesive 122, a third foam double-sided adhesive 123 and a fourth foam double-sided adhesive 124, and the first foam double-sided adhesive 121 is arranged opposite to the third foam double-sided adhesive 123, the second foam double-sided adhesive 122 is arranged opposite to the fourth foam double-sided adhesive 124, the first foam double-sided adhesive 121 is respectively provided with a first boss 121a at both ends, the third foam double-sided adhesive 123 is respectively provided with a third boss 123a at both ends, the second foam double-sided adhesive 122 is respectively provided with a second groove 122a at both ends, and the fourth foam double-sided adhesive 124 is respectively provided with a second groove 122a at both ends. A fourth groove 124a is respectively provided at the head and tail ends of the adhesive 124, and the second groove 122a is arranged opposite to the fourth groove 124a, the first boss 121a at the head and tail ends of the first foam double-sided adhesive 121 is respectively accommodated in the second groove 122a at the head end of the second foam double-sided adhesive and the fourth groove 124a at the tail end of the fourth foam double-sided adhesive 124, the third boss 123a at the head and tail ends of the third foam double-sided adhesive 123 is respectively accommodated in the second groove 122a at the tail end of the second foam double-sided adhesive 122 and the fourth groove 124a at the head end of the fourth foam double-sided adhesive 124.
[0028] Furthermore, a gap greater than or equal to 0.3 mm is formed between each two adjacent foam double-sided adhesives. That is, there is a gap between the boss on each foam double-sided adhesive and the groove on the adjacent foam double-sided adhesive. The reason is that there will be cutting tolerance and fitting tolerance in the production process of the foam double-sided adhesive, so a certain gap needs to be reserved to avoid the size being too large and unable to be flatly fitted. The gap size is greater than or equal to 0.3 mm, preferably 0.3 mm.
[0029] In one embodiment, the thickness of the adhesive member 120 is 0.1 mm greater than the depth of the avoidance groove 111. Thus, a 0.1 mm thickness is reserved so that the display module can contact the adhesive member 120 and form an adhesive connection.
[0030] Furthermore, since the thinnest specification of the double-sided foam adhesive is 0.3mm, preferably, the thickness of the adhesive is 0.3mm, that is, the thickness of the double-sided foam adhesive is 0.3mm, and the depth of the avoidance groove is 0.2mm. Thus, the distance between the cover body 110 and the display module 200 is greatly reduced, so that the air layer in the middle is the thinnest, and the reflected light is less, the transmittance is higher, and the display effect is better.
[0031] In one embodiment, similarly, in order to avoid cutting tolerance and fitting tolerance, the width of the avoidance groove 111 needs to be 0.3 mm larger on one side than the width of the adhesive 120 , that is, the width of the avoidance groove 111 is 0.6 mm larger than the width of the adhesive 120 .
[0032] In one embodiment, a black ink layer is provided on the frame area. The black ink layer serves as a light shielding decoration. Similarly, in this embodiment, a black ink layer is provided on the bottom and surrounding side walls of the avoidance groove 111. For example, the black ink layer can be made by silk screen printing. A layer of black ink layer is silk screen printed on the avoidance groove 111, which can not only prevent light leakage, but also make the foam double-sidedly glued to the front side invisible, so as to achieve a one-piece black effect.
[0033] In one embodiment, a housing frame 210 is disposed on the display module 200, one side of the adhesive 120 is attached to the avoidance groove 111, and the other side of the adhesive 120 is attached to the housing frame 210. In this way, the cover body 110 and the display module 200 can be attached and fixed.
[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A bonding structure between a cover plate and a display module, characterized in that: include: A cover plate assembly, the cover plate assembly comprising a cover plate body and an adhesive member, the cover plate body being provided with a frame area and a display area, the frame area being provided around four peripheries of the display area, and a avoidance groove being provided on the frame area, one side of the adhesive member being attached to the avoidance groove, and the thickness of the adhesive member being greater than the depth of the avoidance groove; and The display module, the other side surface of the adhesive component is attached to one side surface of the display module, so that the display module is connected to the cover body.
2. The bonding structure of the cover plate and the display module according to claim 1, characterized in that: The avoidance groove is a frame-shaped structure, and the adhesive component includes a plurality of foam double-sided adhesives, each of which is connected end to end in sequence to form a frame-shaped structure, and one side of each foam double-sided adhesive is respectively attached to the avoidance groove, wherein the connection area of every two adjacent foam double-sided adhesives is a concave-convex connection structure.
3. The bonding structure of the cover plate and the display module according to claim 2, characterized in that: Four foam double-sided adhesive tapes are provided, and the connection area of every two adjacent foam double-sided adhesive tapes is a concave-convex connection structure.
4. The bonding structure of the cover plate and the display module according to claim 3, characterized in that: A gap greater than or equal to 0.3 mm is formed between every two adjacent double-sided adhesive foams.
5. The bonding structure of the cover plate and the display module according to claim 1, characterized in that: The thickness of the adhesive member is 0.1 mm greater than the depth of the avoidance groove.
6. The bonding structure of the cover plate and the display module according to claim 5, characterized in that: The thickness of the adhesive is 0.3 mm, and the depth of the avoidance groove is 0.2 mm.
7. The bonding structure of the cover plate and the display module according to any one of claims 1 to 6, characterized in that: The width of the avoidance groove is 0.3 mm larger on one side than the width of the adhesive.
8. The bonding structure of the cover plate and the display module according to any one of claims 1 to 6, characterized in that: A black ink layer is arranged on the frame area.
9. The bonding structure of the cover plate and the display module according to claim 8, characterized in that: Black ink layers are respectively arranged on the bottom and surrounding side walls of the avoidance groove.
10. The bonding structure of the cover plate and the display module according to any one of claims 1 to 6, characterized in that: The display module is provided with a shell frame, one side of the adhesive is attached to the avoidance groove, and the other side of the adhesive is attached to the shell frame.