FPC anti-tearing structure for binding position of TFT liquid crystal screen

Abstract

The utility model discloses an FPC anti-tearing structure of a binding position of a TFT liquid crystal screen, which comprises a TFT body and an FPC body, the FPC body is connected with the TFT body in a binding manner, an insulation reinforcing sticker is arranged on the back surface of the binding position of the FPC body, the insulation reinforcing sticker comprises an upper bonding layer, a middle insulation layer and a lower bonding layer, and the upper bonding layer, the middle insulation layer and the lower bonding layer are bonded together. The two wings of the insulation reinforcing paster exceed the preset reinforcing width of the FPC body. When the FPC body is bound, the insulation reinforcing sticker is stuck to the back face of the binding position of the FPC body, when the FPC body is stressed, the insulation reinforcing sticker plays a role in protection, and the two sides of the binding position of the FPC body cannot be pulled, loosened and torn, so that the risk hidden danger is effectively reduced, and the binding reliability of the TFT body is improved.

Description

Technical Field

[0001] The utility model relates to an FPC binding structure, more specifically, to an FPC tear-proof structure for binding positions of a TFT liquid crystal screen. Background Art

[0002] Usually, the TFT LCD screen is bound to the PAD and FPC by hot pressing with conductive tape. During the production process, employees cannot avoid pulling and bending the FPC when carrying and testing. If they are not careful, the FPC and TFT binding positions on both sides may become loose or even tear, resulting in display abnormalities.

[0003] Chinese utility model patent document CN220440999U discloses an anti-bending and tearing FPC structure, comprising: an FPC body, the FPC body comprising a first connection part and a second connection part, the first connection part being connected to the second connection part, and a bending groove being provided between the first connection part and the second connection part, the first connection part extending in a direction away from the second connection part, a first binding position being provided on the first connection part, a second binding position being provided on the second connection part, and the first binding position being located at one end of the first connection part away from the second binding position. The FPC body is in a "Z"-shaped structure. An alignment mark is provided on one side of the FPC body. The alignment mark is in a square frame structure. The alignment mark is a white oil alignment mark. The anti-bending and tearing FPC structure also includes a double-sided adhesive, the double-sided adhesive is provided on one side of the FPC body, and the double-sided adhesive is located in the alignment mark. The double-sided adhesive is a foam double-sided adhesive. The thickness of the foam double-sided adhesive is 1.0 to 2.0 mm. An alignment pin is provided on the second binding position. Obviously, the anti-bending and tearing FPC structure is provided with a first connection part and a second connection part on the FPC body, and the first connection part is extended in a direction away from the second connection part, and the first binding position is located at one end of the first connection part away from the second binding position, that is, the first binding position and the second binding position face different directions. In this way, when the second binding position is bound to the TFT display screen, it does not affect the device to grasp and position the second binding position. In this way, there is no need to manually bend the first connection part in advance, thereby improving production efficiency; in addition, by changing the direction of the first binding position and the second binding position, the force is avoided from being concentrated on the middle arc angle position during bending, thereby preventing the FPC body from bending and tearing, thereby improving the yield rate of the display module, reducing the test process, and improving production efficiency; in addition, by providing a double-sided adhesive with a certain thickness on one side of the FPC body, the double-sided adhesive is used to prevent the first connection part from being subjected to external overpressure during the bending process, resulting in the copper wire inside the FPC body being broken. However, this structure cannot solve the problem of the fragility of the existing FPC binding.

[0004] Chinese invention patent document CN104409476A discloses a display module, including a display panel and a peripheral circuit, one or more FPCs bind and conduct the display panel and the peripheral circuit, characterized in that the one FPC is tilted, at least one of the plurality of FPCs is tilted, and the tilted FPC is not perpendicular to the display panel. When the FPC is plural, the plurality of FPCs are axisymmetrically arranged, and the axis of symmetry of the axisymmetry is perpendicular to the display panel. The number of the FPCs is an odd number, the FPCs bind and conduct the display panel and the peripheral circuit in sequence, the middle FPC is perpendicular to the display panel, and the remaining FPCs are tilted. The angle between the tilted FPC and the display panel is between 15 degrees and 75 degrees. The number of the FPCs is an even number, and all the FPCs are tilted. The angle between the tilted FPC and the display panel is between 15 degrees and 75 degrees. The peripheral circuit is a printed circuit board, and the FPC binds and conducts the display panel and the printed circuit board. The display panel is an OLED display panel, and the OLED display panel includes a TFT substrate, and the FPC binds and conducts the TFT substrate and the peripheral circuit. The peripheral circuit is a printed circuit board, and the display panel is an OLED display panel, and the OLED display panel includes a TFT substrate, and the FPC binds and conducts the TFT substrate and the printed circuit board. The OLED display panel is a curved OLED display panel or a flexible OLED display panel. Obviously, the patent uses FPC to bind the display panel and the peripheral circuit. The number of FPCs can be one or more, and at least one FPC is tilted to increase the tension of the FPC. When the display device is designed to be curved or is a flexible display device, the FPC is not easy to detach or tear. When the number of FPCs is plural, it is easy to distinguish each FPC after the FPC is tilted, reducing the misuse of materials. The symmetrical arrangement of multiple FPCs is to make each FPC binding position evenly stressed when the display device is bent, and the FPC is not easy to detach. However, this structure cannot solve the problem of the fragility of the existing FPC kidnapping. Utility Model Content

[0005] Based on this, it is necessary to provide a FPC anti-tear structure for the binding position of a TFT liquid crystal screen in response to the above technical problems. The FPC anti-tear structure for the binding position of the TFT liquid crystal screen includes a TFT body and an FPC body. The FPC body is bound and connected to the TFT body. An insulating reinforcement sticker is provided on the back of the binding position of the FPC body. The insulating reinforcement sticker includes an upper adhesive layer, a middle insulating layer and a lower adhesive layer. The two wings of the insulating reinforcement sticker exceed the preset reinforcement width of the FPC body. When binding the FPC body, the insulating reinforcement sticker is affixed to the back of the binding position of the FPC body. When the FPC body is subjected to stress, the insulating reinforcement sticker plays a protective role. The two sides of the binding position of the FPC body will not be pulled loose or torn, thereby effectively reducing the risk of hidden dangers and improving the reliability of the binding of the TFT body.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A FPC tear-proof structure for a binding position of a TFT liquid crystal screen, characterized in that the FPC tear-proof structure for the binding position of the TFT liquid crystal screen comprises a TFT body and an FPC body, the FPC body is bound and connected to the TFT body, an insulating reinforcement sticker is provided on the back of the binding position of the FPC body, the insulating reinforcement sticker comprises an upper adhesive layer, a middle insulating layer and a lower adhesive layer, and two wings of the insulating reinforcement sticker exceed a preset reinforcement width of the FPC body.

[0008] As a preferred implementation of the FPC tear-proof structure at the binding position of the TFT liquid crystal screen provided by the utility model, the reinforcement width is 0.5 mm to 1.5 mm.

[0009] As a preferred implementation of the FPC tear-resistant structure at the binding position of the TFT liquid crystal screen provided by the utility model, the reinforcement width is 1 mm.

[0010] As a preferred implementation of the FPC tear-proof structure for binding positions of the TFT liquid crystal screen provided by the utility model, the thickness of the insulation reinforcement sticker is 0.02 mm to 0.08 mm.

[0011] As a preferred implementation of the FPC tear-resistant structure for binding positions of the TFT liquid crystal screen provided by the utility model, the thickness of the insulation reinforcement sticker is 0.05 mm.

[0012] As a preferred implementation of the FPC tear-resistant structure for binding positions of the TFT liquid crystal screen provided by the utility model, both side edges of the upper surface of the upper adhesive layer are non-sticky layers.

[0013] As a preferred implementation of the FPC tear-proof structure of the binding position of the TFT liquid crystal screen provided by the utility model, a wrapping edge is provided on one side of the insulation reinforcement sticker.

[0014] As a preferred implementation of the FPC tear-resistant structure of the binding position of the TFT liquid crystal screen provided by the utility model, both sides of the insulation reinforcement sticker are provided with wrapping edges.

[0015] As a preferred implementation of the FPC tear-proof structure of the binding position of the TFT liquid crystal screen provided by the utility model, the thickness of the wrapping edge is less than that of the insulation reinforcement sticker.

[0016] As a preferred implementation of the FPC tear-resistant structure for binding positions of the TFT liquid crystal screen provided by the utility model, the wrapping edge is made of flexible glue.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides an anti-tearing structure of the FPC binding position of a TFT liquid crystal screen. When binding the FPC body, the insulating reinforcement sticker is affixed to the back side of the binding position of the FPC body. When the FPC body is subjected to stress, the insulating reinforcement sticker plays a protective role, and the two sides of the binding position of the FPC body will not be pulled loose or torn, thereby effectively reducing the risk of hidden dangers and improving the reliability of the TFT body binding.

[0019] In addition, both sides of the upper surface of the upper adhesive layer can be made to have non-stick layers. When the insulation reinforcement sticker is attached to the back of the binding position of the FPC body, the non-stick layer is exposed. After the binding is completed, the non-stick layer will not absorb dust or impurities, and can effectively keep the binding position clean.

[0020] In addition, a wrapping edge may be provided on one side of the insulation reinforcement sticker. Alternatively, a wrapping edge may be provided on both sides of the insulation reinforcement sticker. The thickness of the wrapping edge is less than that of the insulation reinforcement sticker. The wrapping edge is made of flexible adhesive. When the insulation reinforcement sticker is attached to the back of the binding position of the FPC body, the wrapping edge may be turned up and the edge of the FPC body may be partially wrapped, thereby further improving the pulling resistance and tearing resistance of the binding position of the FPC body and further improving the reliability of the TFT body binding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the FPC tear-proof structure of the binding position of the TFT liquid crystal screen of the utility model;

[0023] Figure 2 for Figure 1 A detailed enlarged schematic diagram of area A of the three-dimensional structural schematic diagram of the FPC tear-proof structure of the TFT liquid crystal screen in the binding position;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the insulation reinforcement sticker of the FPC anti-tear structure of the TFT LCD screen;

[0025] Figure 4 for Figure 3 The structural diagram of the insulation reinforcement sticker of the FPC anti-tear structure of the TFT LCD screen is another perspective;

[0026] Figure 5 for Figure 4 A structural schematic diagram of another embodiment of an insulating reinforcing sticker of an FPC tear-proof structure for binding a TFT liquid crystal screen;

[0027] Figure 6 for Figure 4 A structural schematic diagram of another embodiment of an insulating reinforcing sticker of an FPC tear-proof structure for binding a TFT liquid crystal screen;

[0028] Figure 7 for Figure 4 A structural schematic diagram of another embodiment of an insulating reinforcing sticker of an FPC tear-proof structure for binding a TFT liquid crystal screen;

[0029] The markings in the figure are as follows: 1. TFT body; 2. FPC body; 3. Insulation reinforcement sticker; 31. Lower adhesive layer; 32. Middle insulation layer; 33. Upper adhesive layer; 34. Non-stick layer; 35. Wrapping edge; D. Reinforcement width. DETAILED DESCRIPTION

[0030] 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.

[0031] As described in the background technology, for TFT LCD screens, the prior art binds the PAD and FPC of the TFT LCD screen by hot pressing with conductive tape. During the production process, employees cannot avoid pulling and bending the FPC when carrying and testing. If they are not careful, the FPC and the TFT LCD screen binding positions on both sides may become loose or even tear, resulting in display abnormalities.

[0032] In order to solve this technical problem, the utility model provides a TFT liquid crystal screen binding position FPC tear-proof structure comprising a TFT body 1 and an FPC body 2, the FPC body 2 is bound and connected to the TFT body 1, and an insulating reinforcement sticker 3 is provided on the back of the binding position of the FPC body 2, the insulating reinforcement sticker 3 comprises an upper adhesive layer 33, a middle insulating layer 32 and a lower adhesive layer 31, and the two wings of the insulating reinforcement sticker 3 exceed the preset reinforcement width D of the FPC body 2. The thickness of the insulating reinforcement sticker 3 is 0.02 mm to 0.08 mm. Preferably, the thickness of the insulating reinforcement sticker 3 is 0.05 mm.

[0033] Through the above structural design, when binding the FPC body 2, the insulation reinforcement sticker 3 is affixed to the back of the binding position of the FPC body 2. When the FPC body 2 is subjected to stress, the insulation reinforcement sticker 3 plays a protective role, and the two sides of the binding position of the FPC body 2 will not be pulled loose or torn, thereby effectively reducing the risk of hidden dangers and improving the reliability of the binding of the TFT body 1.

[0034] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] like Figure 1 , Figure 2 and Figure 3As shown, the FPC anti-tear structure of the binding position of the TFT liquid crystal screen includes a TFT body 1 and an FPC body 2, and the FPC body 2 is bound and connected to the TFT body 1. An insulating reinforcement sticker 3 is provided on the back of the binding position of the FPC body 2. The insulating reinforcement sticker 3 includes an upper adhesive layer 33, a middle insulating layer 32 and a lower adhesive layer 31. The two wings of the insulating reinforcement sticker 3 exceed the preset reinforcement width D of the FPC body 2.

[0038] It should be noted that the reinforcement width D is 0.5 mm to 1.5 mm. Preferably, the reinforcement width D is 1 mm.

[0039] In addition, the thickness of the insulation reinforcement sticker 3 is 0.02 mm to 0.08 mm. Preferably, the thickness of the insulation reinforcement sticker 3 is 0.05 mm.

[0040] The working mode of this embodiment is described below.

[0041] When binding the FPC body 2, the insulation reinforcement sticker 3 is attached to the back of the binding position of the FPC body 2. When the FPC body 2 is subjected to stress, the insulation reinforcement sticker 3 plays a protective role, and the two sides of the binding position of the FPC body 2 will not be pulled loose or torn, thereby effectively reducing the risk of hidden dangers and improving the reliability of the binding of the TFT body 1.

[0042] like Figure 5 As shown, the FPC tear-resistant structure of the binding position of the TFT liquid crystal screen provided in Example 1 is further optimized. Specifically, both side edges of the upper surface of the upper adhesive layer 33 are provided with a non-stick layer 34 .

[0043] The working mode of this embodiment is described below.

[0044] When the insulating reinforcing sticker 3 is attached to the back of the binding position of the FPC body 2, the non-stick layer 34 is exposed. After the binding is completed, the non-stick layer 34 will not absorb dust or impurities, and can effectively keep the binding position clean.

[0045] like Figure 6 and Figure 7 As shown, the FPC tear-proof structure of the binding position of the TFT liquid crystal screen provided in Example 1 or 2 is further optimized. Specifically, one side of the insulation reinforcement sticker 3 is provided with a wrapping edge 35. Alternatively, both sides of the insulation reinforcement sticker 3 are provided with a wrapping edge 35.

[0046] It should be noted that the thickness of the wrapping edge 35 is less than that of the insulation reinforcement sticker 3. In addition, the wrapping edge 35 is made of flexible glue.

[0047] The working mode of this embodiment is described below.

[0048] When the insulating reinforcement sticker 3 is attached to the back of the binding position of the FPC body 2, the wrapping edge 35 can be turned up and the edge of the FPC body 2 can be partially wrapped to further improve the tensile strength and tear resistance of the binding position of the FPC body 2, and further improve the reliability of the binding of the TFT body 1.

[0049] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0050] 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.

[0051] 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 replace some of the technical features therein with equivalents. 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 also within the scope of patent protection of this application.

Claims

1. A TFT liquid crystal screen binding position FPC anti-tearing structure, characterized in that: The binding position FPC tear-proof structure of the TFT liquid crystal screen comprises a TFT body (1) and an FPC body (2), the FPC body (2) is bound and connected to the TFT body (1), an insulating reinforcement sticker (3) is provided on the back of the binding position of the FPC body (2), the insulating reinforcement sticker (3) comprises an upper adhesive layer (33), a middle insulating layer (32) and a lower adhesive layer (31), and two wings of the insulating reinforcement sticker (3) exceed the preset reinforcement width (D) of the FPC body (2).

2. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 1, characterized in that: The reinforcement width (D) is 0.5 mm to 1.5 mm.

3. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 2, characterized in that: The reinforcement width (D) is 1 mm.

4. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 1, characterized in that: The thickness of the insulation reinforcement sticker (3) is 0.02 mm to 0.08 mm.

5. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 4, characterized in that: The thickness of the insulation reinforcement sticker (3) is 0.05 mm.

6. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 1, characterized in that: Both side edges of the upper surface of the upper adhesive layer (33) are provided with non-stick layers (34).

7. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 1, characterized in that: A wrapping edge (35) is provided on one side of the insulation reinforcement sticker (3).

8. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 1, characterized in that: Both sides of the insulation reinforcement sticker (3) are provided with wrapping edges (35).

9. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 8, characterized in that: The thickness of the wrapping edge (35) is smaller than that of the insulation reinforcement sticker (3).

10. The FPC tear-proof structure for binding position of TFT liquid crystal screen according to claim 8, characterized in that: The wrapping edge (35) is made of flexible glue.

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