A dual-layer ITO touch screen functional chip

Abstract

This utility model discloses a dual-layer ITO touchscreen functional sheet, belonging to the technical field of touchscreen functional sheets. The utility model includes an upper OCA layer, with an upper ITO layer, a lower OCA layer, and a lower ITO layer sequentially attached to the lower surface of the upper OCA layer. Two upper PIN interfaces are connected to the bottom end of the upper ITO layer via a first retainer, and a lower PIN interface is connected to the bottom end of the lower ITO layer via a second retainer. The upper surfaces of the upper and lower PIN interfaces are flush. This utility model provides support and guidance through the first retainer, maintaining a stable connection between the upper PIN interface and the bottom end of the upper ITO layer; it also provides support and guidance through the second retainer, maintaining a stable connection between the lower PIN interface and the bottom end of the lower ITO layer. Simultaneously, the action of the first and second retainers ensures that the upper surfaces of the upper and lower PIN interfaces are flush, effectively improving the production efficiency of the touchscreen functional sheet.

Description

Technical Field

[0001] This utility model relates to the field of touch screen functional chip technology, specifically a double-layer ITO touch screen functional chip. Background Technology

[0002] The dual-layer ITO touchscreen functional chip is composed of a combination of dual-layer ITO film and dual-layer OCA. The wiring bonding location is designed such that, provided there is sufficient routing space, bonding pins are typically placed below the routing space. This allows the touchscreen functional chip to connect and conduct with the FPC (Flexible Printed Circuit) after being bonded together using ACF (Actual Conductive Film).

[0003] Existing patent: A dual-layer ITO touchscreen functional sheet (Publication No.: CN217718652U); To improve production efficiency, the PIN interface positions at the bonding points of the upper and lower ITO layers are designed to be on the same plane, allowing the touchscreen functional sheet and FPC to be bonded and pressed together in one go when the bonding machine picks up the left and right marks via conductive adhesive film. While the above technical solution allows for one-time bonding and pressing, it still has the following drawbacks: the upper PIN interface is independently connected to the bottom of the upper ITO layer without a retainer support, making it prone to displacement, causing the upper and lower PIN interfaces to be out of plane, affecting the efficiency of one-time pressing. To solve the above problems, this utility model provides a dual-layer ITO touchscreen functional sheet. Utility Model Content

[0004] To address the aforementioned technical shortcomings, the purpose of this utility model is to provide a dual-layer ITO touchscreen functional chip. A first retainer provides support and guidance, ensuring a stable connection between the upper PIN interface and the bottom of the upper ITO layer. A second retainer provides support and guidance, ensuring a stable connection between the lower PIN interface and the bottom of the lower ITO layer. Simultaneously, under the action of the first and second retainers, the upper surfaces of the upper and lower PIN interfaces are flush. This solves the technical problems mentioned in the background art.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a dual-layer ITO touch screen functional chip, comprising: an upper OCA layer, wherein an upper ITO layer, a lower OCA layer and a lower ITO layer are sequentially attached to the lower surface of the upper OCA layer, the bottom end of the upper ITO layer is provided with two upper PIN interfaces connected by a first retainer, and the bottom end of the lower ITO layer is provided with a lower PIN interface connected by a second retainer; the upper surfaces of the upper PIN interfaces and the upper surfaces of the lower PIN interfaces are flush.

[0006] Preferably, the lower PIN interface is located between the two upper PIN interfaces, and the two upper PIN interfaces are symmetrical about the lower PIN interface; thereby ensuring balanced force after binding with the FPC.

[0007] Preferably, the first retainer is an L-shaped sheet, and the horizontal part of the first retainer is connected to the bottom end of the lower OCA layer, the bottom end of the lower ITO layer, and the bottom end of the upper ITO layer through a first UV adhesive layer; this ensures that the first retainer is fixedly connected to the bottom end of the ITO touch screen functional sheet, thus providing stable support and guidance.

[0008] Preferably, the upper PIN interface is an L-shaped cover layer covering the outside of the first retainer; the first UV adhesive layer connects the end of the horizontal segment of the upper PIN interface; further ensuring a stable connection between the upper PIN interface and the first retainer.

[0009] Preferably, the second retainer is an L-shaped sheet, with a vertical extension extending from the horizontal end of the second retainer, and the end of the vertical extension is partially connected to the bottom end of the lower ITO layer through a second UV adhesive layer; the lower PIN interface is a cover layer covering the outside of the second retainer, and the end of the lower PIN interface is connected to the bottom end of the lower ITO layer.

[0010] Preferably, the outer side of the lower PIN interface is connected to the entire bottom end of the upper OCA layer, the entire bottom end of the upper ITO layer, and the partial bottom end of the lower ITO layer through a third UV adhesive layer; ensuring the stability of the fixed connection between the second retainer, the lower PIN interface, and the bottom end of the ITO touch screen functional piece.

[0011] The beneficial effects of this utility model are as follows:

[0012] This invention provides support and guidance through a first retainer, ensuring a stable connection between the upper PIN interface and the bottom of the upper ITO layer; and provides support and guidance through a second retainer, ensuring a stable connection between the lower PIN interface and the bottom of the lower ITO layer. Simultaneously, the first and second retainers ensure that the upper surfaces of the upper and lower PIN interfaces are flush. This allows the touchscreen functional sheet, when bonded to the FPC via conductive adhesive film on both sides of the PIN interface on a bonding machine, to be bonded and pressed together in one step. This ensures that both the upper and lower PIN interfaces are connected to the gold finger interfaces of the FPC, forming a rapid bonding connection, effectively improving the production efficiency of the touchscreen functional sheet. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a front view of a dual-layer ITO touchscreen functional chip provided in an embodiment of the present utility model.

[0015] Figure 2 for Figure 1 Sectional view of AA.

[0016] Figure 3 for Figure 1 A cross-sectional view of BB.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1-Upper OCA layer, 11-Upper ITO layer, 2-Lower OCA layer, 21-Lower ITO layer, 3-Upper PIN interface, 31-First retainer, 4-Lower PIN interface, 41-Second retainer, 411-Vertical extension, 5-First UV adhesive layer, 6-Second UV adhesive layer, 7-Third UV adhesive layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1:

[0021] like Figures 1 to 3 As shown, this embodiment provides a dual-layer ITO touch screen functional chip, including: an upper OCA layer 1, an upper ITO layer 11, a lower OCA layer 2 and a lower ITO layer 21 sequentially attached to the lower surface of the upper OCA layer 1, two upper PIN interfaces 3 connected to the bottom end of the upper ITO layer 11 through a first retainer 31, and a lower PIN interface 4 connected to the bottom end of the lower ITO layer 21 through a second retainer 41; the upper surfaces of the upper PIN interfaces 3 and the lower PIN interfaces 4 are flush.

[0022] In this embodiment, the first retainer 31 provides support and guidance, ensuring a stable connection between the upper PIN interface 3 and the bottom of the upper ITO layer 11; the second retainer 41 provides support and guidance, ensuring a stable connection between the lower PIN interface 4 and the bottom of the lower ITO layer 21; simultaneously, under the action of the first retainer 31 and the second retainer 41, the upper surfaces of the upper PIN interface 3 and the lower PIN interface 4 are flush; when the touch screen functional sheet and the FPC are bonded together by the conductive adhesive film on the left and right sides of the PIN interface on the bonding machine, they can be bonded and pressed together in one go, so that both the upper PIN interface 3 and the lower PIN interface 4 are connected to the gold finger interface of the FPC and form a quick bonding connection, effectively improving the production efficiency of the touch screen functional sheet.

[0023] Furthermore, the lower PIN interface 4 is located between the two upper PIN interfaces 3, and the two upper PIN interfaces 3 are symmetrical about the lower PIN interface 4; thus ensuring balanced force after bonding with the FPC.

[0024] Furthermore, the first retainer 31 is an L-shaped sheet, and the horizontal part of the first retainer 31 is connected to the bottom end of the lower OCA layer 2, the bottom end of the lower ITO layer 21, and the bottom end of the upper ITO layer 11 through the first UV adhesive layer 5; this ensures that the first retainer 31 is fixedly connected to the bottom end of the ITO touch screen functional sheet, thus providing stable support and guidance.

[0025] Furthermore, the upper PIN interface 3 is an L-shaped cover layer covering the outside of the first retainer 31; the first UV adhesive layer 5 is connected to the end of the horizontal segment of the upper PIN interface 3; thus further ensuring a stable connection between the upper PIN interface 3 and the first retainer 31.

[0026] Furthermore, the second retainer 41 is an L-shaped sheet, with a vertical extension 411 extending from the horizontal end of the second retainer 41. The end of the vertical extension 411 is partially connected to the bottom end of the lower ITO layer 21 via the second UV adhesive layer 6. The lower PIN interface 4 is a cover layer covering the outside of the second retainer 41, and the end of the lower PIN interface 4 is connected to the bottom end of the lower ITO layer 21. Even further, the outside of the lower PIN interface 4 is connected to the entire bottom end of the upper OCA layer 1, the entire bottom end of the upper ITO layer 11, and the partial bottom end of the lower ITO layer 21 via the third UV adhesive layer 7, ensuring the stability of the fixed connection between the second retainer 41, the lower PIN interface 4, and the bottom end of the ITO touchscreen functional sheet.

[0027] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dual-layer ITO touchscreen functional chip, characterized in that, include: The upper OCA layer (1) has an upper ITO layer (11), a lower OCA layer (2) and a lower ITO layer (21) attached sequentially to its lower surface. The bottom end of the upper ITO layer (11) is connected to two upper PIN interfaces (3) via a first retainer (31), and the bottom end of the lower ITO layer (21) is connected to a lower PIN interface (4) via a second retainer (41). The upper surfaces of the upper PIN interfaces (3) and the lower PIN interfaces (4) are flush.

2. The dual-layer ITO touchscreen functional chip as described in claim 1, characterized in that, The lower PIN interface (4) is located between the two upper PIN interfaces (3), and the two upper PIN interfaces (3) are symmetrical about the lower PIN interface (4).

3. A dual-layer ITO touchscreen functional chip as described in claim 2, characterized in that, The first retainer (31) is an L-shaped sheet. The horizontal part of the first retainer (31) is connected to the bottom end of the lower OCA layer (2), the bottom end of the lower ITO layer (21), and the bottom end of the upper ITO layer (11) through the first UV adhesive layer (5).

4. A dual-layer ITO touchscreen functional chip as described in claim 3, characterized in that, The upper PIN interface (3) is an L-shaped cover layer covering the outside of the first retainer (31); the first UV adhesive layer (5) is connected to the end of the horizontal segment of the upper PIN interface (3).

5. A dual-layer ITO touchscreen functional chip as described in claim 2, characterized in that, The second retainer (41) is an L-shaped sheet. A vertical extension (411) extends from the horizontal end of the second retainer (41). The end of the vertical extension (411) is partially connected to the bottom end of the lower ITO layer (21) through the second UV adhesive layer (6). The lower PIN interface (4) is a cover layer covering the outside of the second retainer (41), and the end of the lower PIN interface (4) is connected to the bottom end of the lower ITO layer (21).

6. A dual-layer ITO touchscreen functional chip as described in claim 5, characterized in that, The lower PIN interface (4) is connected to the bottom end of the upper OCA layer (1), the bottom end of the upper ITO layer (11), and the bottom end of the lower ITO layer (21) via a third UV adhesive layer (7).

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