Backlight square adhesive structure capable of preventing vacuum adsorption
By applying adhesive to the edge of the backlight module and setting up adhesive-free PET, the problem of vacuum adsorption between the liquid crystal and the backlight module is solved, pressure balance is achieved, adsorption and film material damage are prevented, and production costs and cycle time are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-31
AI Technical Summary
In the display module industry, vacuum adsorption often occurs during the production of LCD and backlight modules, which affects the display effect.
Apply adhesive to the edge of the backlight module and place adhesive-free PET on its lower left side to form a "Z"-shaped adhesive-free area. This ensures airflow between the LCD glass and the backlight module and maintains consistent internal and external pressure.
It effectively prevents the backlight module from adhering to the LCD glass, avoids damage to the film material, saves design costs, and shortens the sample production cycle.
Smart Images
Figure CN224067109U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display module technology, and in particular to a backlight lettering adhesive structure that prevents vacuum adsorption. Background Technology
[0002] In the display module industry, the phenomenon of vacuum adsorption is frequently encountered during the production process of LCD and backlight modules.
[0003] Based on this, in order to avoid abnormal product display effects caused by vacuum adsorption, this design proposes a backlight lettering adhesive structure to prevent vacuum adsorption. Utility Model Content
[0004] The purpose of this invention is to provide a backlight lettering adhesive structure that prevents vacuum adsorption.
[0005] A backlight lettering adhesive structure for preventing vacuum adsorption includes: a backlight module, lettering adhesive, adhesive-free PET, and FPC, wherein the backlight module is coated with lettering adhesive, the lettering adhesive is evenly applied to the edge of the backlight module, the lower right corner of the backlight module is connected to an FPC, and the lower left part of the lettering adhesive is provided with adhesive-free PET.
[0006] Preferably, the adhesive includes a glue preparation area and a glue-free area, wherein the glue preparation area is uniformly coated with adhesive, and the glue-free area is free of adhesive.
[0007] Preferably, the adhesive-free area has a "Z" shaped structure, and the adhesive-free area uses adhesive-free PET.
[0008] The beneficial effects of the above scheme are:
[0009] 1. This utility model improves the structure of the lower-level material of the backlight module by adding a section of adhesive-free PET to the adhesive surface. This allows air molecules between the liquid crystal glass and the backlight module to circulate with the outside during the production process, keeping the internal and external pressures consistent and thus preventing the film material of the backlight module from adsorbing onto the liquid crystal glass. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model;
[0011] Figure 2 This is a schematic diagram of the structure of the square-shaped adhesive of this utility model;
[0012] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;
[0013] In the diagram: 1. Backlight module; 2. Adhesive box; 21. Adhesive preparation area; 22. Adhesive-free area; 3. Adhesive-free PET; 4. FPC. Detailed Implementation
[0014] The present invention will be further described clearly and completely below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.
[0015] according to Figure 1 , Figure 2 , Figure 3 As shown, a backlight lettering adhesive structure for preventing vacuum adsorption includes: a backlight module 1, lettering adhesive 2, adhesive-free PET 3, and FPC 4. The backlight module 1 is coated with lettering adhesive 2, which is evenly applied to the edge of the backlight module 1. The lower right corner of the backlight module 1 is connected to FPC 4, and the lower left part of the lettering adhesive 2 is provided with adhesive-free PET 3.
[0016] Specifically, the adhesive 2 includes a glue preparation area 21 and a glue-free area 22. The glue preparation area 21 is evenly coated with adhesive, and the glue-free area 22 is free of adhesive.
[0017] Furthermore, the adhesive-free area 22 has a "Z"-shaped structure. The adhesive-free area 22 uses adhesive-free PET3. By improving the structure of the lower-level material adhesive 2 of the backlight module 1, an adhesive-free PET3 structure is added to the adhesive surface. This allows air molecules between the liquid crystal glass and the backlight module to circulate with the outside during the production process. The "Z"-shaped structure can reduce the airflow velocity inside and outside, preventing the impact caused by excessive airflow velocity, which could lead to damage and cracking of the film material. It also keeps the internal and external pressure consistent, thereby avoiding the phenomenon of the film material of the backlight module adhering to the liquid crystal glass. This avoids the need to modify the plastic part mold structure, saves on excessive design costs, and shortens the sample production cycle.
Claims
1. A backlit lettering structure that prevents vacuum suction, comprising: Backlight module (1), mouth-shaped glue (2), glue-free PET (3), FPC (4), characterized in that the backlight module (1) is smeared with mouth-shaped glue (2), the mouth-shaped glue (2) is evenly smeared on the edge of the backlight module (1), the lower right corner of the backlight module (1) is connected with FPC (4), and the lower left part of the mouth-shaped glue (2) is provided with glue-free PET (3).
2. The backlit label of claim 1, wherein, The mouth-shaped glue (2) comprises a glue preparation area (21) and a glue-free area (22), the glue preparation area (21) is evenly smeared with glue, and the glue-free area (22) is free of glue.
3. The backlight lettering adhesive structure for preventing vacuum adsorption as described in claim 2, characterized in that, The glue-free area (22) is a "Z" shaped structure, and the glue-free area (22) uses glue-free PET (3).