Cover plate for reducing silver migration phenomenon

Abstract

The utility model discloses a cover plate for reducing silver migration phenomenon, which comprises a cover plate body and a touch screen Sensor, the touch screen Sensor is arranged below the cover plate body, the lower surface of the cover plate body positioned at one end of the touch screen Sensor is bound with a touch control FPC (Flexible Printed Circuit), the binding part of the touch screen Sensor and the touch control FPC is provided with filling glue, and the filling glue is filled with the filling glue. And the filling glue is made of a liquid crystal polymer. The liquid crystal polymer, namely LCP, has an extremely small linear expansion coefficient, the problem that the binding and positioning thickness of the cover plate body is too large after dispensing, and the cover plate body is arched after backlight fitting is avoided, and the liquid crystal polymer is good in fluidity and high in curing speed in a melt state and is an extremely good filling material; the high temperature resistance, the electrical insulation property and the arc resistance are very excellent, the silver migration phenomenon can be effectively improved, and the reliability of the touch screen is improved; and the touch screen also has outstanding corrosion resistance, so that the touch screen can be ensured to stably work in a severe environment, and the competitiveness of a product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a cover plate capable of reducing silver migration. Background Art

[0002] Under normal circumstances, the bonding position between the touch screen touch film and the touch screen flexible circuit board needs to be glued to fill the gap at the bonding position, reduce the risk of water vapor entering the bonding position to corrode the electrode, and reduce the risk of silver migration in the silver paste electrode. However, with the deterioration of the working environment, the increase in the operating frequency of electronic equipment, the electromagnetic influence of the electrode circuit itself, and other problems, the risk of silver migration in the silver paste electrode has greatly increased, reducing the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to reduce the phenomenon of silver migration in silver paste electrodes and improve the competitiveness of products.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a cover plate for reducing the silver migration phenomenon, which includes a cover plate body and a touch screen touch film, the touch screen touch film is arranged below the cover plate body, and the lower surface of the cover plate body located at one end of the touch screen touch film is bound with a touch screen flexible circuit board, and a filling glue is arranged at the binding position between the touch screen touch film and the touch screen flexible circuit board, and the material of the filling glue is a liquid crystal polymer.

[0006] As a preferred embodiment of the cover plate for reducing silver migration provided by the utility model, the touch screen flexible circuit board includes a main body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the main body, both ends of the reinforcement plate have fixed parts extending outward, the two fixed parts both exceed the edge of the main body, the lower surfaces of the two fixed parts are fixed with first strong magnetic blocks, the connector is arranged below the main body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

[0007] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, two grooves are provided on the connector, and the two second strong magnetic blocks are respectively fixed in the two grooves.

[0008] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the edge of the groove is provided with a chamfer.

[0009] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the chamfer is a right angle.

[0010] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the chamfer is a rounded corner.

[0011] As a preferred embodiment of the cover plate for reducing silver migration provided by the utility model, the outer dimensions of the second strong magnetic block are larger than the outer dimensions of the first strong magnetic block, and the outer dimensions of the groove correspond to the outer dimensions of the first strong magnetic block and the second strong magnetic block.

[0012] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the depth of the groove is equal to the sum of the thickness of the first strong magnetic block and the second strong magnetic block.

[0013] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the materials of the first strong magnetic block and the second strong magnetic block are both neodymium iron boron strong magnets.

[0014] As a preferred implementation of the cover plate for reducing silver migration provided by the utility model, the first strong magnetic block and the second strong magnetic block have different colors.

[0015] The utility model has the following beneficial effects:

[0016] Liquid crystal polymer, or LCP, has a very small linear expansion coefficient. After dispensing, the binding thickness of the cover body will not be too large, resulting in the problem of arching after the backlight is attached. It has good fluidity in the melt state and a fast curing speed, making it an excellent filling material. It also has excellent high temperature resistance, electrical insulation, and arc resistance, which can effectively improve the silver migration phenomenon and improve the reliability of the touch screen. It also has outstanding corrosion resistance, which can ensure that the touch screen can operate stably in harsh environments, thereby improving the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 The utility model is a schematic structural diagram of a cover plate for reducing silver migration.

[0019] Figure 2 for Figure 1 Bottom view of .

[0020] Figure 3 for Figure 1 Schematic diagram of the improved structure of the touch screen flexible circuit board.

[0021] Description of Figure Numbers:

[0022] Cover plate body 1; touch screen touch film 2; touch screen flexible circuit board 3; filling glue 4;

[0023] The body 31 ; the reinforcing plate 32 ; the connector 33 ; the fixing portion 34 ; the first strong magnetic block 35 ; the second strong magnetic block 36 ; and the groove 37 . DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] 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 the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] The utility model provides a cover plate for reducing silver migration phenomenon, which comprises a cover plate body and a touch screen touch film, wherein the touch screen touch film is arranged below the cover plate body, a touch screen flexible circuit board is bound to the lower surface of the cover plate body at one end of the touch screen touch film, a filling glue is arranged at the binding position between the touch screen touch film and the touch screen flexible circuit board, and the material of the filling glue is a liquid crystal polymer.

[0028] Liquid crystal polymer, or LCP, has a very small linear expansion coefficient. After dispensing, the binding thickness of the cover body will not be too large, resulting in the problem of arching after the backlight is attached. It has good fluidity in the melt state and a fast curing speed, making it an excellent filling material. It also has excellent high temperature resistance, electrical insulation, and arc resistance, which can effectively improve the silver migration phenomenon and improve the reliability of the touch screen. It also has outstanding corrosion resistance, which can ensure that the touch screen can operate stably in harsh environments, thereby improving the competitiveness of the product.

[0029] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and 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 with 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 limitations on the present invention.

[0030] See also Figure 1 and Figure 2 , a cover plate for reducing silver migration provided by the utility model, comprising a cover plate body 311 and a touch screen touch film 2, the touch screen touch film 2 is arranged below the cover plate body 311, a touch screen flexible circuit board 3 is bound to the lower surface of the cover plate body 311 at one end of the touch screen touch film 2, a filling glue 4 is arranged at the binding position of the touch screen touch film 2 and the touch screen flexible circuit board 3, and the material of the filling glue 4 is a liquid crystal polymer. Liquid crystal polymer, namely LCP, has a very small linear expansion coefficient, and after dispensing, the thickness of the binding position of the cover plate body 311 will not be too large, resulting in the problem of arching after the backlight is attached. It has good fluidity in the melt state and fast curing speed, and is an excellent filling material; and it has excellent high temperature resistance, electrical insulation, and arc resistance, which can effectively improve the silver migration phenomenon and improve the reliability of the touch screen; it also has outstanding corrosion resistance, which can ensure that the touch screen can operate stably in harsh environments, thereby improving the competitiveness of the product.

[0031] See also Figure 3As a further optimization scheme of Example 1, in this embodiment, the touch screen flexible circuit board 3 includes a main body 31, a reinforcement plate 32 and a connector 33. The reinforcement plate 32 is fixed to the upper surface of the main body 31. Both ends of the reinforcement plate 32 have fixed parts 34 extending outward. The two fixed parts 34 are beyond the edge of the main body 31. The lower surfaces of the two fixed parts 34 are fixed with first strong magnetic blocks 35; the connector 33 is arranged below the main body 31, and two second strong magnetic blocks 36 corresponding to the two first strong magnetic blocks 35 are fixed on the connector 33. Since the upper surface of the body 31 is fixed with a reinforcing plate 32, both ends of the reinforcing plate 32 are fixed with first strong magnetic blocks 35, and the connector 33 is fixed with two second strong magnetic blocks 36 corresponding to the two first strong magnetic blocks 35, when the body 31 and the connector 33 are installed, as long as the two ends of the body 31 are close to the connector 33, the first strong magnetic blocks 35 at both ends of the body 31 and the second strong magnetic blocks 36 at both ends of the connector 33 will attract each other and be fixed, and the body 31 and the connector 33 can be automatically aligned and tightly connected. This assembly structure of the touch screen flexible circuit board 3 has few assembly steps, and only the body 31 and the connector 33 need to be assembled. 3 can be assembled when they are close together, the assembly efficiency of the touch screen flexible circuit board 3 can be greatly improved, and the automatic assembly of the touch screen flexible circuit board 3 and the connector 33 can be easily realized. The fewer the assembly steps, the lower the probability of defective touch screen flexible circuit board 3 during assembly, thereby avoiding the situation that the products assembled with it cannot work normally due to poor assembly, thereby avoiding abnormal operation of the product, reducing the defective rate of the product, and thus greatly reducing the production and manufacturing costs of the touch screen flexible circuit board 3, thereby improving the product competitiveness of the touch screen flexible circuit board 3, so as to meet the growing quality requirements of enterprises.

[0032] Furthermore, two grooves 37 are provided on the connector 33, and two second strong magnetic blocks 36 are respectively fixed in the two grooves 37, so that the fit between the body 31 and the connector 33 is more compact, and the reliability of assembly is improved, thereby greatly reducing the production and manufacturing costs of the touch screen flexible circuit board 3, thereby improving the product competitiveness of the touch screen flexible circuit board 3, thereby meeting the company's growing quality requirements.

[0033] Furthermore, the edge of the groove 37 is provided with a chamfer, and more preferably, the chamfer is a right angle or a rounded angle, so that when the first strong magnetic block 35 is close to the second strong magnetic block 36, it can fall accurately into the groove 37 under the guidance of the chamfer, thereby improving the accuracy and reliability of assembly, thereby greatly reducing the production and manufacturing costs of the touch screen flexible circuit board 3, thereby improving the product competitiveness of the touch screen flexible circuit board 3.

[0034] Furthermore, the outer dimensions of the second strong magnetic block 36 are larger than those of the first strong magnetic block 35, and the outer dimensions of the groove 37 correspond to those of the first strong magnetic block 35 and the second strong magnetic block 36, so that the second strong magnetic block 36 can be firmly fixed in the groove 37. Even if the suction force of the first strong magnetic block 35 is large, the second strong magnetic block 36 will not be sucked out, thereby improving the reliability of assembly, thereby greatly reducing the production and manufacturing costs of the touch screen flexible circuit board 3, and further improving the product competitiveness of the touch screen flexible circuit board 3, thereby meeting the company's growing quality requirements.

[0035] Furthermore, the depth of the groove 37 is equal to the sum of the thicknesses of the first strong magnetic block 35 and the second strong magnetic block 36, so that the assembly of the body 31 and the connector 33 can be smoothly fitted without leaving any gaps. More preferably, a buffer pad can be provided on the contact surface between the body 31 and the connector 33, and a buffer groove corresponding to the buffer pad is provided on the connector 33, so that the body 31 or the connector 33 can be cushioned during the fitting assembly to avoid damage to the body 31 or the connector 33. More preferably, the buffer pad is a rubber pad, which has good effect, low cost and high cost performance.

[0036] Furthermore, the materials of the first strong magnetic block 35 and the second strong magnetic block 36 are both NdFeB strong magnets, which have mature technology and high cost performance.

[0037] Furthermore, the first strong magnetic block 35 and the second strong magnetic block 36 have different colors, so that the staff can distinguish the first strong magnetic block 35 and the second strong magnetic block 36 during installation.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A cover plate for reducing silver migration, characterized in that: It includes a cover body and a touch screen touch film, the touch screen touch film is arranged below the cover body, a touch screen flexible circuit board is bound to the lower surface of the cover body at one end of the touch screen touch film, and a filling glue is arranged at the binding position between the touch screen touch film and the touch screen flexible circuit board, and the material of the filling glue is a liquid crystal polymer.

2. The cover plate for reducing silver migration according to claim 1, characterized in that: The touch screen flexible circuit board includes a main body, a reinforcement plate and a connector. The reinforcement plate is fixed to the upper surface of the main body. Both ends of the reinforcement plate have fixed parts extending outward. The two fixed parts are beyond the edge of the main body. The lower surfaces of the two fixed parts are fixed with first strong magnetic blocks. The connector is arranged below the main body. Two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.

3. The cover plate for reducing silver migration according to claim 2, characterized in that: The connector is provided with two grooves, and the two second strong magnetic blocks are respectively fixed in the two grooves.

4. The cover plate for reducing silver migration according to claim 3, characterized in that: The edge of the groove is provided with a chamfer.

5. The cover plate for reducing silver migration according to claim 4, characterized in that: The chamfer is a right angle.

6. The cover plate for reducing silver migration according to claim 4, characterized in that: The chamfer is a rounded corner.

7. The cover plate for reducing silver migration according to claim 3, characterized in that: The outer dimensions of the second strong magnetic block are greater than those of the first strong magnetic block, and the outer dimensions of the groove correspond to those of the first strong magnetic block and the second strong magnetic block.

8. The cover plate for reducing silver migration according to claim 3, characterized in that: The depth of the groove is equal to the sum of the thicknesses of the first strong magnetic block and the second strong magnetic block.

9. The cover plate for reducing silver migration according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block are both made of strong neodymium iron boron magnets.

10. The cover plate for reducing silver migration according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block have different colors.

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