Anti-static display screen structure and display device
By adding a grid-like conductive film to the upper glass surface of the mobile phone display module, the problem of unstable connection between the polarizer and the conductive silver paste is solved, and the normal export of static electricity and the stability of the display screen is achieved.
Patent Information
- Application Number
- CN202420236803.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The polarizers of existing mobile phone display modules are unstable in connection with conductive silver paste, resulting in failure of electrostatic conduction and distortion of display screens.
Add a conductive film to the surface of the upper glass to form a grid-like structure to increase the adhesion area, ensure a stable connection between the polarizer and the conductive silver paste, and form a conductive loop to normally deduce static electricity.
It effectively avoids the fall of conductive silver paste, ensures that static electricity can be released normally, prevents polarizer from being damaged by electrostatic damage, and improves the stability of the display screen and the authenticity of the picture.
Smart Images
Figure CN222189667U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display screens, in particular to an anti-static display screen structure and a display device. Background Art
[0002] In order to prevent the chaotic electric field generated by static electricity on the surface of the main display screen from affecting the normal flipping of the liquid crystal, mobile phone display modules will apply conductive silver paste to the lower end area where the upper polarizer and the upper glass meet to conduct static electricity. In the actual production process, due to various reasons such as inadequate application of conductive silver paste, shrinkage of the polarizer during bubble baking, shrinkage of the polarizer during reliability testing, or insufficient adhesion of the silver paste and falling off, the conductive silver paste and the polarizer are not connected properly, resulting in failure of static electricity conduction or slow static electricity release, resulting in abnormal display distortion.
[0003] In view of this, there is an urgent need to improve the grounding structure of the existing polarizer so that the polarizer and the conductive silver paste can be firmly connected and not fall off. Utility Model Content
[0004] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides an anti-static display screen structure and a display device, by adding a conductive film to the silver paste position of the upper glass, the silver paste can form a conductive loop with the polarizer through the conductive film when the upper polarizer shrinks. The conductive film adopts a grid shape, which increases the adhesion area of the silver paste and improves the adhesion force, so that the static electricity on the upper polarizer can be normally discharged, avoiding the silver paste between the upper polarizer and the ground electrode from falling off, and preventing the polarizer from being damaged by static electricity.
[0005] The technical problem to be solved by the utility model is achieved through the following technical solution: an anti-static display screen structure, comprising:
[0006] An upper glass, wherein an upper polarizing film is provided on the surface of the upper glass;
[0007] A lower glass, the lower glass comprising a covering area and a non-covering area, the covering area is bonded to the upper glass, and a lower polarizer is provided on the lower surface of the lower glass;
[0008] A ground electrode is provided in the non-covered area of the lower glass; the ground electrode is electrically connected to the upper polarizer through a conductive silver paste layer;
[0009] The conductive film is arranged on the upper surface of the upper glass, covering the conductive silver paste layer and a part of the upper polarizer area.
[0010] As a preferred implementation of the anti-static display screen structure provided by the utility model, the conductive film is an uneven grid type.
[0011] As a preferred implementation of the anti-static display screen structure provided by the utility model, the conductive film is manufactured by exposure, development, spraying and the like.
[0012] As a preferred implementation of the anti-static display screen structure provided by the utility model, the lower surface of the upper polarizer is provided with PSA glue.
[0013] As a preferred implementation of the antistatic display screen structure provided by the utility model, the PSA glue forms an electrical connection loop with the conductive film and the conductive silver paste layer.
[0014] As a preferred implementation of the antistatic display screen structure provided by the utility model, the conductive silver paste layer is an alcohol solvent-based silver paste.
[0015] As a preferred implementation of the anti-static display screen structure provided by the utility model, it also includes a backlight module arranged below the lower polarizer.
[0016] As a preferred implementation of the anti-static display screen structure provided by the utility model, an iron frame is provided on the periphery of the backlight module for fixing the backlight module.
[0017] As a preferred implementation of the anti-static display screen structure provided by the utility model, a grounding terminal is provided on the iron frame, and the iron frame can conduct static electricity coupled by the edge of the display module.
[0018] The utility model also provides a display device, comprising the anti-static display screen structure described in any one of the above solutions.
[0019] The utility model has the following beneficial effects: an anti-static display screen structure and a display device, comprising: an upper glass, an upper polarizer is provided on the surface of the upper glass; a lower glass, the lower glass comprises a covering area and a non-covering area, the covering area is bonded to the upper glass, and a lower polarizer is provided on the lower surface of the lower glass; a grounding electrode is provided in the non-covering area of the lower glass; the grounding electrode is electrically connected to the upper polarizer through a conductive silver paste layer; a conductive film is arranged on the upper surface of the upper glass, covering the conductive silver paste layer and a part of the upper polarizer area. The utility model adds a conductive film at the silver paste position of the upper glass, and when the upper polarizer shrinks, the silver paste can form a conductive loop with the polarizer through the conductive film. The conductive film adopts a grid shape, which increases the adhesion area of the silver paste and improves the adhesion force, so that the static electricity on the upper polarizer can be normally discharged, thereby avoiding the silver paste between the upper polarizer and the grounding electrode from falling off, and avoiding the polarizer from being damaged by static electricity. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A schematic diagram of the grounding structure of the upper polarizer of the anti-static display screen structure provided by the utility model;
[0022] Figure 2 A schematic diagram of the structure of the anti-static display screen provided by the utility model;
[0023] Figure 3 This is a schematic diagram of the touch screen structure provided by the utility model.
[0024] 1. Upper glass; 2. Lower glass; 21. Ground electrode; 22. Non-covered area (22); 23. Covered area; 3. Conductive film; 4. Upper polarizer; 5. Lower polarizer; 6. Conductive silver paste layer; 7. Backlight module; 8. Touch screen. DETAILED DESCRIPTION
[0025] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0026] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0027] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example
[0029] like Figure 1 and Figure 2 As shown, the utility model provides an anti-static display screen structure, comprising:
[0030] An upper glass 1, wherein an upper polarizing film 4 is provided on the surface of the upper glass 1;
[0031] A lower glass 2, the lower glass 2 comprising a covering area 23 and a non-covering area 22, the covering area 23 is bonded to the upper glass 1, and a lower polarizer 5 is provided on the lower surface of the lower glass 2;
[0032] The non-covered area 22 of the lower glass 2 is provided with a ground electrode 21; the ground electrode 21 is electrically connected to the upper polarizer 4 through a conductive silver paste layer 6;
[0033] The conductive film 3 is disposed on the upper surface of the upper glass 1 , covering the conductive silver paste layer 6 and a portion of the upper polarizer 4 area.
[0034] Wherein, the conductive film 3 is an uneven grid type.
[0035] The utility model arranges the conductive film 3 on the conductive silver paste layer 6 between the upper polarizer 4 and the upper glass 1. At this time, the static electricity of the upper polarizer 4 can be released through the electrical circuit formed by the conductive film 3, the conductive silver paste layer 6 and the grounding electrode 21. The conductive film 3 adopts a grid shape to increase the adhesion area of the silver paste and enhance the adhesion force, so that the static electricity on the upper polarizer 4 can be normally discharged, thereby preventing the silver paste between the upper polarizer 4 and the grounding electrode 21 from falling off and preventing the polarizer from being damaged by static electricity.
[0036] Through the above structural design, the conductive film 3 covers the connection area between the conductive silver paste layer 6 and the upper polarizer 4, which can protect the conductive silver paste layer 6 from damage and prevent it from falling off, thereby ensuring good static discharge.
[0037] In another preferred implementation of this embodiment, the conductive film 3 can also completely cover the conductive silver paste layer 6, which can protect the conductive silver paste layer 6 from damage to the greatest extent.
[0038] In this embodiment, the conductive film 3 is made by exposure, development, spraying, etc. Among them, exposure and development is a commonly used method for preparing the conductive film 3. First, a layer of photosensitive material is coated on the surface of the substrate, and then a grid-type structure is formed through the process of exposure and development. During exposure, the light source is irradiated onto the photosensitive material through the light-transmitting part of the mask, so that the material of the light-transmitting part undergoes a chemical reaction to form a soluble substance. The unexposed part remains unchanged. Then, through the process of development, the unexposed part is dissolved, leaving a grid-type structure.
[0039] Another method of preparing the conductive film 3 is spraying. In this method, a spraying device can be used to spray the conductive material onto the surface of the substrate, and then a certain process is performed to form a grid-type structure.
[0040] Whether it is exposure, development or spraying, the prepared conductive film 3 can increase the bonding area between the conductive silver paste and the substrate, enhance the adhesion, and thus improve the performance and stability of the conductive film. Example
[0041] like Figure 2 As shown, the lower surface of the upper polarizer 4 is provided with PSA glue 41.
[0042] It should be noted that PSA adhesive is a pressure-sensitive adhesive that forms a strong bond after applying slight pressure. It usually exists in the form of a film or coating and is widely used in various industrial and consumer products. The advantages of PSA adhesive include ease of use, no need for additional solvents or water for activation, and the ability to remain sticky after multiple bonding.
[0043] The adhesive properties of PSA adhesives depend on their chemical composition and structure, which are usually composed of rubber, resin and additives. The selection of these ingredients can affect the adhesion, peeling force and durability of PSA adhesives. In addition, PSA adhesives can also add special functional fillers such as conductive materials as needed to achieve conductive properties. This makes PSA adhesives important in electronic product assembly and other applications that require electrical connection or shielding.
[0044] In this embodiment, the PSA adhesive 41 is made conductive by adding conductive materials, such as carbon nanotubes, metal particles or conductive polymers.
[0045] In another implementation of this embodiment, when the upper polarizer 4 shrinks, even if it falls off from the conductive silver paste layer 6, the PSA glue 41 and the conductive film 3 and the conductive silver paste layer 6 can form an electrical connection loop to normally conduct static electricity through the loop.
[0046] In a further preferred implementation of this embodiment, the conductive silver paste layer 6 is an alcohol solvent-based silver paste. Since ester and ketone solvent-based silver pastes will increase the corrosion of the polarizer PSA adhesive layer, the present application uses an alcohol solvent-based silver paste, which can minimize the risk of corrosion bubbles even if the conductive silver paste contacts the polarizer.
[0047] Furthermore, the utility model further comprises a backlight module 7 disposed below the lower polarizer 5. An iron frame is disposed on the periphery of the backlight module 7 for fixing the backlight module 7. The iron frame is provided with a grounding terminal, and the iron frame can conduct static electricity coupled from the edge of the display module. The conductivity of the iron frame is used to conduct static electricity from the outside to prevent static electricity from entering the display panel. Example
[0048] The utility model also provides a display module, having an anti-static display screen structure provided by the above utility model embodiment, and a touch screen 8, wherein the touch screen 8 is bonded to the anti-static display screen structure by transparent optical adhesive; the anti-static display screen structure comprises: an upper glass 1, wherein an upper polarizer 4 is provided on the surface of the upper glass 1; a lower glass 2, wherein the lower glass 2 comprises a covering area 23 and a non-covering area 22, wherein the covering area 23 is bonded to the upper glass 1, and a lower polarizer 5 is provided on the lower surface of the lower glass 2; a grounding electrode 21 is provided in the non-covering area 22 of the lower glass 2; the grounding electrode 21 is electrically connected to the upper polarizer 4 through a conductive silver paste layer 6; a conductive film 3 is arranged on the upper surface of the upper glass 1, covering the conductive silver paste layer 6 and a part of the upper polarizer 4 area. The utility model arranges the conductive film 3 on the conductive silver paste layer 6 between the upper polarizer 4 and the upper glass 1. At this time, the static electricity of the upper polarizer 4 can be released through the electrical circuit formed by the conductive film 3, the conductive silver paste layer 6 and the grounding electrode 21. The conductive film 3 adopts a grid shape to increase the adhesion area of the silver paste and enhance the adhesion force, so that the static electricity on the upper polarizer 4 can be normally discharged, thereby preventing the silver paste between the upper polarizer 4 and the grounding electrode 21 from falling off and preventing the polarizer from being damaged by static electricity.
[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. An anti-static display screen structure, characterized in that: include: An upper glass (1), wherein an upper polarizing film (4) is provided on the surface of the upper glass (1); A lower glass (2), the lower glass (2) comprising a covering area (23) and a non-covering area (22), the covering area (23) being bonded to the upper glass (1), and a lower polarizer (5) being provided on the lower surface of the lower glass (2); A grounding electrode (21) is provided in the non-covered area (22) of the lower glass (2); the grounding electrode (21) is electrically connected to the upper polarizer (4) via a conductive silver paste layer (6); A conductive film (3) is arranged on the upper surface of the upper glass (1) and covers the conductive silver paste layer (6) and a portion of the upper polarizer (4) area.
2. The antistatic display screen structure according to claim 1, characterized in that: The conductive film (3) is of an uneven grid type.
3. The anti-static display screen structure according to claim 1, characterized in that: The conductive film (3) is manufactured by exposure, development and spraying.
4. The anti-static display screen structure according to claim 1, characterized in that: The lower surface of the upper polarizer (4) is provided with PSA glue (41).
5. The anti-static display screen structure according to claim 4, characterized in that: The PSA glue (41) forms an electrical connection loop with the conductive film (3) and the conductive silver paste layer (6).
6. The anti-static display screen structure according to claim 1, characterized in that: The conductive silver paste layer (6) is an alcohol solvent-based silver paste.
7. The anti-static display screen structure according to claim 1, characterized in that: It also includes a backlight module (7) arranged below the lower polarizer (5).
8. The antistatic display screen structure according to claim 7, characterized in that: An iron frame is provided on the outer periphery of the backlight module (7) for fixing the backlight module (7).
9. The antistatic display screen structure according to claim 8, characterized in that: The iron frame is provided with a grounding terminal, and the iron frame can conduct static electricity coupled by the edge of the display module.
10. A display device, characterized in that: The invention comprises the antistatic display screen structure described in any one of claims 1 to 9.