A connection structure for enhancing the reliability of FPC and LCD

Abstract

The utility model provides a connection structure for enhancing the reliability of an FPC and an LCD. The structure adopts a structure in which two single-sided adhesive insulating sheets are attached between the FPC and the LCD. First, a second insulating tape is attached to the back of the FPC to connect it with a second glass substrate of the LCD. Then, the first insulating tape is attached around the second glass substrate of the LCD via a binding portion of the FPC to cover the FPC and the second insulating tape. This replaces the connection method of UV glue, thereby stably fixing the FPC and the LCD together, helping to improve the contact reliability of the FPC and the LCD, and preventing the risk of separation of the FPC and the LCD due to movement or vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of a connection structure of an FPC and an LCD, in particular to a connection structure that enhances the reliability of the FPC and the LCD. Background Art

[0002] In LCM assemblies, in order to enhance the reliability of the connection between the FPC and the LCD and prevent the ITO traces on the glass substrate from being contaminated or corroded, UV glue is usually applied to the front and back of the FPC. Figure 1 , Figure 2 , the LCM shown is mainly composed of LCD2 and FPC1, LCD2 can be subdivided into a first polarizer 21, a first glass substrate 23, a second polarizer 222, a second glass substrate 24, FPC1 is hot-pressed and bonded to the second glass substrate 24 of LCD2, and the front and back of FPC1 are coated with UV glue 3, and the position of UV glue 3 is as shown in Figure 2 As shown, the UV glue 3 on the front of FPC1 completely covers the portion of the second glass substrate 24 that exceeds the first glass substrate 23. In this way, when the LCD size is large, if the operation is improper, it is still easy to cause the FPC1 to separate from the LCD2 when pulling the FPC1, resulting in damage to the LCM component. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a connection structure that improves the contact reliability between the FPC and the LCD and reduces the risk of separation between the FPC and the LCD.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A connection structure for enhancing the reliability of an FPC and an LCD comprises an FPC, an LCD and a connection component, wherein the LCD comprises a first polarizer, a first glass substrate, a second polarizer, a second glass substrate, a first insulating tape and a second insulating tape, wherein the first and second polarizers are respectively attached to the outer side surfaces of the first and second glass substrates, the inner side surfaces of the first and second glass substrates are bonded to each other, the FPC is electrically connected to a binding portion of the inner side surface of the second glass substrate, the connection component comprises the first insulating tape and the second insulating tape, one end of the second insulating tape is attached to the FPC, and the other end is attached to the second glass substrate, the first insulating tape is attached around the surface of the second glass substrate where the binding portion is located, and covers the FPC and the second insulating tape.

[0006] Furthermore, the first and second insulating tapes are single-sided adhesive insulating tapes.

[0007] Preferably, the single-sided adhesive insulating tape uses polyvinyl chloride as the base tape and a rubber-type pressure-sensitive adhesive as the adhesive layer.

[0008] Furthermore, the second glass substrate is longer than the first glass substrate.

[0009] Furthermore, the second insulating tape is attached to the back of the FPC and connected to the outer side of the second glass substrate.

[0010] Furthermore, the width of the second insulating tape is the same as the width of the FPC.

[0011] Furthermore, the width of the first insulating tape is at least equal to the height of the binding portion.

[0012] Furthermore, a layer of primer or accelerator is coated on the FPC.

[0013] Furthermore, the FPC is electrically connected to the second glass substrate by using a hot pressing process or conductive adhesive or ACF.

[0014] Furthermore, the FPC and the second glass substrate are provided with pasting positioning lines.

[0015] The utility model attaches two single-sided sticky insulating tapes between the FPC and the LCD to replace the connection method of UV glue. The second insulating tape is first attached to the back of the FPC to connect it with the second glass substrate of the LCD. Then, the first insulating tape is attached around the second glass substrate of the LCD via the binding part of the FPC to cover the FPC and the second insulating tape, thereby stably fixing the FPC and the LCD together, helping to improve the contact reliability between the FPC and the LCD, and preventing the risk of separation of the FPC and the LCD due to movement or vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is the front view of the FPC and LCD connection structure in the prior art;

[0018] Figure 2 It is a side view of the connection structure between FPC and LCD in the prior art;

[0019] Figure 3 Main view of the connection structure to enhance the reliability of FPC and LCD;

[0020] Figure 4Side view of the connection structure to enhance the reliability of FPC and LCD. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0022] It should be noted that when one part is "connected" to another part, it can be directly connected to the two parts or have a central part. The terms "first", "second", "outer side", "inner side" and the like used herein to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model 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 operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] The utility model provides a connection structure for enhancing the reliability of FPC and LCD, which mainly adopts two insulating tapes to enhance the connection reliability between FPC1 and LCD2, wherein one end of the second insulating tape 32 is attached to FPC1, and the other end is attached to the second glass substrate 24 of LCD2, and the first insulating tape 31 is attached to the surface of the second glass substrate 24 of LCD2 where the binding part 25 of FPC1 and LCD2 is located, and covers FPC1 and the second insulating tape 32, so that FPC1 and LCD2 are stably fixed together.

[0025] See also Figure 3 , Figure 4A connection structure of an embodiment of the utility model includes an FPC1, an LCD2 and a connection component 3, wherein the LCD includes a first polarizer 21, a first glass substrate 23, a second polarizer 22, and a second glass substrate 24, wherein the first and second polarizers 21 and 22 are respectively attached to the outer side surfaces of the first and second glass substrates 223 and 24, and the inner side surfaces of the first and second glass substrates 23 and 24 are fitted together, and the second glass substrate 24 is longer than the first glass substrate 23, and the FPC1 is electrically connected to the binding portion 25 on the inner side surface of the second glass substrate 24, and the connection component 3 includes a first and second insulating tape 31 and 32, wherein the first and second insulating tape 31 and 32 are single-sided adhesive insulating tapes, wherein the single-sided adhesive insulating tape 31 and 32 use polyvinyl chloride as a base tape and a rubber-type pressure-sensitive adhesive as an adhesive layer, and such a material combination enables the insulating tape to have both sufficient mechanical strength and excellent insulation and adhesion properties, and can effectively prevent leakage and ensure the safety of the circuit.

[0026] In this embodiment, the second insulating tape 32 is attached to the back of FPC1 and connected to the outer side of the second glass substrate 24. The width of the second insulating tape 24 is the same as the width of FPCI, so that the FPC1 can be fully fitted in the width direction, increasing the adhesion area, so that its adhesion connection with the second glass substrate 24 is more firmly and stably; the width of the first insulating tape 31 covers the height of the binding part 25, and the first insulating tape 31 is attached around the surface of the second glass substrate 24 of LCD2 where the binding part 25 is located, and covers the FPC1 and the second insulating tape 32. In this way, the first insulating tape 31 wraps up the FPC1 and the second insulating tape 32 and wraps up with the second glass substrate 24, so that the connection is more firmly connected. In the case of shaking and pulling, the connection stability between FPC1 and LCD2 is further enhanced, and it is not easy to separate and damage the LCM.

[0027] In different implementations of this embodiment, the FPC1 and the second glass substrate 24 may be electrically connected by using a hot pressing process or conductive adhesive or ACF.

[0028] In this embodiment, a layer of primer or promoter is also coated on FPC1 to improve the wettability and affinity of the adhesive surface, enhance the adhesion between the single-sided insulating tape 31, 32 and the FPC surface, so that the adhesive can be more firmly attached to FPC1, and at the same time help reduce the problems of adhesive peeling and falling off that may occur during the connection process, thereby improving the reliability and stability of the connection.

[0029] In this embodiment, pasting positioning lines may be further provided on the FPC1 and the second glass substrate 24, so that in the production of the connection structure, the insulating tapes 31 and 32 can be accurately aligned and positioned during the pasting process to avoid deviation or misalignment.

[0030] In summary, the utility model attaches two single-sided sticky insulating tapes between FPC1 and LCD2 to stably fix FPC1 and LCD2 together, which helps to improve the contact reliability between FPC1 and LCD2 and prevent the risk of separation of FPC1 and LCD2 due to movement or vibration.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A connection structure for enhancing the reliability of an FPC and an LCD, comprising an FPC, an LCD and a connection assembly, wherein the LCD comprises a first polarizer, a first glass substrate, a second polarizer and a second glass substrate, wherein the first and second polarizers are respectively attached to the outer side surfaces of the first and second glass substrates, the inner side surfaces of the first and second glass substrates are attached to each other, and the FPC is electrically connected to the binding portion of the inner side surface of the second glass substrate, characterized in that: The connection component includes a first insulating tape and a second insulating tape. One end of the second insulating tape is attached to the FPC, and the other end is attached to the second glass substrate. The first insulating tape is attached around the surface of the second glass substrate where the binding part is located and covers the FPC and the second insulating tape.

2. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The first and second insulating tapes are single-sided sticky insulating tapes.

3. The connection structure for enhancing the reliability of FPC and LCD according to claim 2, characterized in that: The single-sided adhesive insulating tape uses polyvinyl chloride as a base tape and a rubber-type pressure-sensitive adhesive as an adhesive layer.

4. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The second glass substrate is longer than the first glass substrate.

5. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The second insulating tape is attached to the back of the FPC and connected to the outer side of the second glass substrate.

6. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The width of the second insulating tape is the same as the width of the FPC.

7. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The width of the first insulating tape is at least equal to the height of the binding portion.

8. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The FPC is coated with a layer of primer or accelerator.

9. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The FPC is electrically connected to the second glass substrate by using a hot pressing process or conductive adhesive or ACF.

10. The connection structure for enhancing the reliability of FPC and LCD according to claim 1, characterized in that: The FPC and the second glass substrate are provided with pasting positioning lines.

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