Anti-static display module

Abstract

A touch screen is arranged on the surface of a display screen and makes contact with the outside, static electricity is generated on the surface of the module and conducted, the touch screen is attached to the display screen, a second GND pin of an auxiliary FPC of the touch screen is connected with a first GND pin of a main FPC of the display screen, and then the static electricity on the surface of the display module is released along the auxiliary FPC. Compared with the prior art, the method has the advantages that the cost of TFT glass coating is saved, the operation steps of silver paste materials and silver paste dispensing are saved, the product cost is optimized, meanwhile, environmental pollution and potential safety hazards can be reduced, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to an anti-static display module. Background Art

[0002] TFT display screens are widely used in today's society and can be seen everywhere. Through the display screen, information can be expressed more intuitively and vividly. In the industrial and consumer fields, in addition to the products that generally use TFT display screens, such as monitors, telephones, handheld scanners, cameras, etc., many previously unused devices are now also beginning to use TFT display screens, such as remote controls, ovens, refrigerators, etc.

[0003] Most TFT displays use full-viewing angle TFT. Due to the anti-static requirements, the TFT glass surface needs to be coated with ITO film and silver paste is applied to connect the ITO film on the upper glass to the ground wire of the FPC to release the static electricity on the glass surface and avoid affecting the display effect of the TFT.

[0004] With the development of display technology, most of the current IPS TFT modules are equipped with touch screens. Everyone is accustomed to using touch operations. For such TFT modules with touch screens, electrostatic discharge is usually achieved by coating and silver paste. This operation increases production costs, reduces product competitiveness, and may cause environmental pollution and safety hazards. Coating and silver paste operations increase the complexity of the production process and reduce production efficiency. Utility Model Content

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an anti-static display module, the touch screen is arranged on the surface of the display screen and is in contact with the outside world, static electricity is generated on the surface of the module and is conducted, and the touch screen and the display screen are bonded, the second GND pin of the auxiliary FPC of the touch screen is connected to the first GND pin of the main FPC of the display screen, and then the static electricity on the surface of the display module is released along the auxiliary FPC, saving the cost of TFT glass coating, as well as the silver paste materials and the operation steps of applying the silver paste, optimizing the cost of the product, and at the same time reducing environmental pollution and safety hazards, and improving production efficiency and product quality.

[0006] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0007] An anti-static display module, comprising:

[0008] The display screen is externally connected to a main FPC, wherein the main FPC is provided with a first GND pin;

[0009] The touch screen is provided with a GND lead wire which surrounds the entire touch area and the wiring area and is externally connected to a secondary FPC, the secondary FPC is provided with a second GND pin, and both ends of the GND lead wire are connected to the second GND pin of the secondary FPC;

[0010] The main FPC and the auxiliary FPC are electrically connected, thereby conducting the first GND pin and the second GND pin.

[0011] As a preferred solution of the anti-static display module provided by the utility model, the display screen includes an upper polarizer, an upper glass, a lower glass, and a lower polarizer stacked in sequence.

[0012] As a preferred solution of the anti-static display module provided by the utility model, liquid crystal material is filled between the upper glass and the lower glass.

[0013] As a preferred solution of the anti-static display module provided by the utility model, the touch screen is attached to the light emitting surface of the display screen; and an optical adhesive layer is arranged between the touch screen and the display screen.

[0014] As a preferred solution of the anti-static display module provided by the utility model, the touch screen is a capacitive touch screen.

[0015] As a preferred solution of the anti-static display module provided by the utility model, an anti-glare AG layer and an anti-reflection AR layer are sequentially stacked on the touch screen.

[0016] As a preferred solution of the anti-static display module provided by the utility model, an anti-fingerprint AF layer is also stacked on the touch screen.

[0017] As a preferred solution of the anti-static display module provided by the utility model, the auxiliary FPC includes a substrate layer, a copper foil circuit layer and a protective film layer stacked in sequence, and the protective film layer has a window area to expose the gold fingers of the copper foil circuit layer to form a gold finger plug.

[0018] As a preferred solution of the anti-static display module provided by the utility model, a reinforcing plate is provided on the back side of the gold finger plug, and a surface treatment layer for improving surface roughness is provided on the outer surface of the reinforcing plate.

[0019] As a preferred solution of the anti-static display module provided by the utility model, the reinforcing plate is made of PI material, and the reinforcing plate and the touch FPC are connected by adhesive.

[0020] The utility model has the following beneficial effects: an anti-static display module, comprising: a display screen, an external main FPC, the main FPC is provided with a first GND pin; a touch screen, a GND lead wire is provided and surrounds the entire touch area and the wiring area and is externally connected to a secondary FPC, the secondary FPC is provided with a second GND pin, and both ends of the GND lead wire are connected to the second GND pin of the secondary FPC; the main FPC and the secondary FPC are electrically connected, and then the first GND pin and the second GND pin are connected. The touch screen of the present application is arranged on the surface of the display screen and contacts the outside world, static electricity is generated on the surface of the module and is conducted, and the touch screen and the display screen are bonded, and the second GND pin of the secondary FPC of the touch screen is connected to the first GND pin of the main FPC of the display screen, and then the static electricity on the surface of the display module is released along the secondary FPC, saving the cost of TFT glass coating, as well as the operation steps of silver paste materials and silver paste, optimizing the cost of the product, and at the same time reducing environmental pollution and safety hazards, and improving production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic diagram of the structure of the anti-static display module provided by the utility model;

[0023] Figure 2 A schematic diagram of the touch screen sub-FPC of the anti-static display module provided by the utility model;

[0024] Figure 3 A schematic diagram of the stacking structure of the anti-static display module provided by the utility model;

[0025] Figure 4 A schematic diagram of the display screen structure of the anti-static display module provided by the utility model;

[0026] Figure 5 A schematic diagram of the secondary FPC gold finger structure of the anti-static display module provided by the utility model.

[0027] 1. Display screen; 11. Main FPC; 12. First GND pin; 101. Upper polarizer; 102. Upper glass; 104. Lower glass; 103. Lower polarizer; 2. Touch screen; 21. Secondary FPC; 201. Second GND pin; 211. Window area; 212. Reinforcement board; 22. GND lead; 3. Optical adhesive layer. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Embodiment 1

[0033] like Figure 1 As shown, the utility model provides an anti-static display module, comprising:

[0034] The display screen 1 is externally connected to a main FPC 11, and the main FPC 11 is provided with a first GND pin 12;

[0035] The touch screen 2 is provided with a GND lead 22 which surrounds the entire touch area and the wiring area and is externally connected to a secondary FPC 21. The secondary FPC 21 is provided with a second GND pin 201. Both ends of the GND lead 22 are connected to the second GND pin 201 of the secondary FPC 21.

[0036] The main FPC 11 and the auxiliary FPC 21 are electrically connected, thereby conducting the first GND pin 12 and the second GND pin 201 .

[0037] In this embodiment, the touch screen 2 is arranged on the surface of the display screen 1 and is in contact with the outside world. Static electricity is generated on the surface of the module and is conducted. The touch screen 2 is attached to the display screen 1. A GND lead 22 is provided on the touch screen 2 around the entire touch area and the wiring area. Both ends of the GND lead 22 are connected to the second GND pin 201, and are electrically connected to the main FPC of the display screen 1 through the auxiliary FPC 21 of the touch screen 2. The second GND pin and the first GND pin are connected and conducted by the internal wiring of the auxiliary FPC 21, so that the static electricity on the surface of the display module is released along the auxiliary FPC 21, saving the cost of TFT glass coating, as well as the operation steps of silver paste materials and silver paste application, optimizing the cost of the product, and at the same time reducing environmental pollution and safety hazards, and improving production efficiency and product quality.

[0038] Furthermore, if Figure 4 As shown, the display screen 1 includes an upper polarizer 101, an upper glass 102, a lower glass 104, and a lower polarizer 103 stacked in sequence. The polarizer has a fixed polarization axis, and only allows light with a vibration direction consistent with the polarization direction to pass through, and absorbs light with a vibration direction perpendicular to the polarization axis, and is used to convert natural light without polarization into polarized light, allowing light with a direction perpendicular to the electric field to pass through, so that the liquid crystal display panel can display images normally.

[0039] Furthermore, liquid crystal material is filled between the upper glass 102 and the lower glass 104 .

[0040] Among them, the liquid crystal is a special substance that has properties between liquid and solid. The liquid crystal molecules are arranged in an orderly manner when there is no external influence, but when subjected to external effects such as electric field, temperature or pressure, the liquid crystal molecules will change their arrangement structure, resulting in different optical properties. Liquid crystal materials are usually composed of organic molecules or polymers, which have a long shape, so that they can form a specific arrangement structure in the liquid crystal state. According to the way the liquid crystal molecules are arranged, liquid crystals can be divided into various types, including nematic liquid crystals, twisted nematic liquid crystals, helical liquid crystals, etc. Liquid crystal materials are widely used in display technology, especially in liquid crystal displays. In liquid crystal displays, liquid crystal materials are filled between two pieces of glass to form a liquid crystal layer. When an electric field is applied, the arrangement structure of the liquid crystal molecules changes, thereby changing the polarization state of light passing through the liquid crystal layer and realizing the display of images.

[0041] Embodiment 2

[0042] like Figure 3 As shown, the touch screen 2 is attached to the light emitting surface of the display screen 1; an optical adhesive layer 3 is provided between the touch screen 2 and the display screen 1. The touch screen 2 and the display screen 1 are preferably but not limited to being fully attached together by a transparent optical adhesive layer 3 such as OCA adhesive, solid adhesive, etc., or can be attached together by a frame adhesive such as a frame adhesive;

[0043] Further, the touch screen 2 is a capacitive touch screen. It should be noted that a capacitive touch screen is a touch input technology widely used in modern electronic devices, which can detect and respond to the touch of a user's finger or other conductive objects. Capacitive touch screens work based on the principle of capacitance. Capacitance is the ability to store charge between two conductive objects due to the action of an electric field. In a capacitive touch screen, a layer of transparent conductive material such as indium tin oxide, ITO is usually used to make a capacitor array. This array covers the surface of the screen to form a capacitor grid. When the user's finger touches the screen, since the human body is also a conductor, it will change the electric field distribution in a specific area on the screen, thereby changing the capacitance value of the area. The touch screen controller detects these capacitance changes and calculates the position of the touch point.

[0044] Furthermore, an anti-glare AG layer and an anti-reflection AR layer (not shown in the figure) are sequentially stacked on the touch screen 2. The anti-glare AG layer can be an anti-glare AG coating film, which forms micro-concave and convex on the surface of the touch screen 2 to scatter external light and reduce direct reflection, thereby reducing reflected light. The anti-reflection AR layer can be an anti-reflection AR coating film, which alternately coats a material with a high refractive index and a material with a low refractive index on the surface, and can directly reduce the reflected visible light with various wavelength bands of 350nm to 750nm. Furthermore, in order to prevent fingerprints from being generated on the touch screen, an anti-fingerprint AF layer is also stacked on the touch screen 2. Specifically, the anti-fingerprint AF layer is formed on the anti-reflection AR layer.

[0045] Embodiment 3

[0046] like Figure 2 and Figure 5 As shown, the auxiliary FPC 21 includes a substrate layer, a copper foil circuit layer and a protective film layer stacked in sequence, and the protective film layer has a window area 211 to expose the gold finger of the copper foil circuit layer to form a gold finger plug.

[0047] Furthermore, a reinforcing plate 212 is provided on the back side of the gold finger plug, and a surface treatment layer for improving the surface roughness is provided on the outer surface of the reinforcing plate 212, so that the FPC can be pulled out more easily, reducing the risk of the FPC circuit being broken.

[0048] Furthermore, the reinforcing plate 212 is made of PI material, and the reinforcing plate 212 is connected to the auxiliary FPC 21 by adhesive. In other embodiments, if the heat generated by the FPC is large, a heat dissipation material with better heat dissipation effect, such as an aluminum foil reinforcing plate 212, can also be used.

[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 module, characterized in that: include, A display screen (1) is externally connected to a main FPC (11), wherein the main FPC (11) is provided with a first GND pin (12); A touch screen (2) is provided with a GND lead (22) which surrounds the entire touch area and the wiring area and is externally connected to a secondary FPC (21); the secondary FPC (21) is provided with a second GND pin (201); and both ends of the GND lead (22) are electrically connected to the second GND pin (201) of the secondary FPC (21); The main FPC (11) and the auxiliary FPC (21) are electrically connected, thereby conducting the first GND pin (12) and the second GND pin (201).

2. The anti-static display module according to claim 1, characterized in that: The display screen (1) comprises an upper polarizer (101), an upper glass (102), a lower glass (104), and a lower polarizer (103) which are stacked in sequence.

3. The anti-static display module according to claim 2, characterized in that: Liquid crystal material is filled between the upper glass (102) and the lower glass (104).

4. The anti-static display module according to claim 1, characterized in that: The touch screen (2) is attached to the light emitting surface of the display screen (1); and an optical adhesive layer (3) is provided between the touch screen (2) and the display screen (1).

5. The anti-static display module according to claim 1, characterized in that: The touch screen (2) is a capacitive touch screen.

6. The anti-static display module according to claim 1, characterized in that: An anti-glare AG layer and an anti-reflection AR layer are sequentially stacked on the touch screen (2).

7. The anti-static display module according to claim 1, characterized in that: An anti-fingerprint AF layer is also laminated on the touch screen (2).

8. The anti-static display module according to claim 1, characterized in that: The secondary FPC (21) comprises a substrate layer, a copper foil circuit layer and a protective film layer stacked in sequence, wherein the protective film layer has a window area (211) to expose the gold finger of the copper foil circuit layer to form a gold finger plug.

9. The anti-static display module according to claim 8, characterized in that: A reinforcing plate (212) is provided on the back side of the gold finger plug, and a surface treatment layer for improving surface roughness is provided on the outer surface of the reinforcing plate (212).

10. The anti-static display module according to claim 9, characterized in that: The reinforcing plate (212) is made of PI material, and the reinforcing plate (212) and the auxiliary FPC (21) are connected by adhesive.

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