Touch screen and its touch function chip

Abstract

This utility model discloses a touch screen and its touch function chip, belonging to the technical field of touch function chip technology. This utility model includes an ITO graphic circuit and metal traces designed and formed on a touch function substrate using photolithography. The metal traces are arranged around the ITO graphic circuit and connected to the ITO graphic circuit via overlapping elements. A first bonding position is provided on the first side of the metal trace, and a second bonding position is provided on the second side of the metal trace. The first side and the second side have a non-zero included angle. Adjacent sides of the touch function substrate are provided with dustproof protective films covering the first bonding position and the second bonding position. When the FPC cable is connected to the first bonding position, the second bonding position remains covered by the dustproof protective film; this prevents dust accumulation in the second bonding position when it is not in use for a long time, thus avoiding affecting circuit continuity and extending its lifespan.

Description

Technical Field

[0001] This utility model relates to the field of touch function chip technology, specifically a touch screen and its touch function chip. Background Technology

[0002] The existing yellow light touch function chip has relatively poor compatibility because it only has a tie positioning on one side of the metal trace. In the actual production design of touch screen, tie positioning is often required on the metal traces on different sides of the touch screen to connect with the FPC cable, depending on the different wiring requirements of the product.

[0003] Existing patent: A touch screen and its yellow light touch function sheet (Publication No.: CN221804677 U); To solve the above problems, a first bonding position and a second bonding position are respectively set on the first and second side lines of the metal trace to connect to the FPC cable connected to the touch control board, which is compatible with different line exit positions and does not require redesigning and manufacturing photomasks due to different line exit positions, which helps to reduce manufacturing costs. However, the above technical solution still has the following drawbacks in actual use: When the yellow light touch function sheet is in use, only one bonding position is connected to the FPC cable; while the other bonding position is empty and exposed. Long-term exposure of the bonding position is prone to dust accumulation, which has an adverse effect on the circuit. To solve the above problems, this utility model provides a touch screen and its touch function sheet. Utility Model Content

[0004] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a touch screen and its touch function chip, wherein when the FPC cable is connected to the first port, the second port remains covered by a dustproof protective film; this avoids dust accumulation in the long-term idle second port under exposure, which would affect circuit continuity and extend its lifespan; and solves the technical problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: This utility model provides a touch function substrate for a touch screen, including: an ITO graphic circuit and metal traces designed and formed on the touch function substrate using photolithography. The metal traces are arranged around the periphery of the ITO graphic circuits and are connected to the ITO graphic circuits by overlapping elements. A first bonding position is provided on the first side of the metal traces, and a second bonding position is provided on the second side of the metal traces. The first side and the second side have a non-zero included angle. Adjacent sides of the touch function substrate are provided with dustproof protective films covering the first bonding position and the second bonding position. When one bonding position is connected to an FPC cable, the other bonding position is covered by the dustproof protective film; that is, when the FPC cable is connected to the first bonding position, the second bonding position remains covered by the dustproof protective film; this avoids the accumulation of dust in the second bonding position under exposure due to long-term idleness, which would affect the smoothness of the circuit and extend its lifespan.

[0006] Preferably, the dustproof protective film has an adhesive film along its three adjacent sides, and the adhesive film is U-shaped; the two ends of the adhesive film are connected to the sides of the touch function substrate; the U-shaped adhesive film ensures stable coverage of the dustproof protective film.

[0007] Preferably, the two sides of the adhesive film are adhered to the upper surface of the touch-sensitive substrate; the bottom edge of the adhesive film is adhered to the upper surface of the ITO pattern circuit to ensure a good seal.

[0008] Preferably, one side of the adhesive film is integrally connected to a raised tear strip; when the adhesive is used, the dustproof protective film can be easily removed through the tear strip.

[0009] Preferably, the touch-sensitive substrate, the dustproof protective film, and the adhesive film are connected by tear lines, which are composed of several strip-shaped slits growing in a straight line; the tear lines facilitate the removal of the dustproof protective film.

[0010] The touch screen includes a glass cover, a touch function piece assembled on one side of the glass cover, and an FPC cable connected to the touch function piece and externally connected to a touch control board, wherein the touch function piece is the touch function piece described in any of the above-mentioned embodiments.

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

[0012] 1. When one of the ports is connected to the FPC cable, the other port is covered by a dustproof protective film; that is, when the FPC cable is connected to the first port, the second port is covered by the dustproof protective film; this avoids the accumulation of dust in the second port under exposure due to long-term idleness, which would affect the smooth flow of the circuit and extend its service life.

[0013] 2. This utility model ensures stable coverage of the dustproof protective film through a U-shaped adhesive film; the tear strip makes it easy to tear off the dustproof protective film; the tear groove design makes it easy to tear off the dustproof protective film. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a front view of the touch function sheet of the touch screen provided in an embodiment of the present utility model.

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0017] Figure 3 for Figure 1 Top view.

[0018] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0019] Figure 5 for Figure 1 The front view without the dustproof protective film installed.

[0020] Explanation of reference numerals in the attached diagram: 1-Touch function substrate, 11-ITO graphic circuit, 12-Metal trace, 121-First side, 122-Second side, 3-First bonding position, 4-Second bonding position, 5-Dustproof protective film, 51-Adhesive film, 52-Tear strip, 53-Tear pattern. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] like Figures 1 to 5As shown, this embodiment provides a touch function sheet for a touch screen, including: an ITO graphic circuit 11 and a metal trace 12 designed and formed on the touch function substrate 1 using photolithography. The metal trace 12 is arranged around the periphery of the ITO graphic circuit 11 and is connected to the ITO graphic circuit 11 by a connecting element. The first side 121 of the metal trace 12 has a first bonding position 3, and the second side 122 of the metal trace 12 has a second bonding position 4. The first side 121 and the second side 122 have a non-zero included angle. This allows the touch function sheet to flexibly connect to the FPC cable connected to the touch control board at either the first bonding position 3 or the second bonding position 4 according to the wiring requirements of the touch screen. This provides strong compatibility and eliminates the need to redesign and manufacture matching photomasks due to different cable exit positions, which helps reduce manufacturing costs. The adjacent sides of the touch function substrate 1 are provided with a dustproof protective film 5 covering the first bonding position 3 and the second bonding position 4. The dustproof protective film 5 is a PET film. When one port is connected to the FPC cable, the other port is protected by the dustproof protective film 5; that is, when the FPC cable is connected to the first port 3, the second port 4 is kept covered by the dustproof protective film 5; this prevents the second port 4 from accumulating dust under exposure due to long-term idleness, which would affect the smooth flow of the line and extend its lifespan.

[0024] Furthermore, the dustproof protective film 5 is provided with an adhesive film 51 along its three adjacent sides. The adhesive film 51 is U-shaped. The two ends of the adhesive film 51 are connected to the side of the touch function substrate 1. The U-shaped adhesive film 51 ensures the stable coverage of the dustproof protective film 5.

[0025] Furthermore, the two sides of the adhesive film 51 are adhered to the upper surface of the touch function substrate 1; the bottom edge of the adhesive film 51 is adhered to the upper surface of the ITO graphic circuit 11 to ensure a good seal.

[0026] Furthermore, one side of the adhesive film 51 is integrally connected to a raised tear strip 52, which makes it easy to tear off the dustproof protective film 5 when the adhesive is used.

[0027] Furthermore, a tear 53 is provided at the connection between the touch function substrate 1, the dustproof protective film 5, and the adhesive film 51. The tear 53 is composed of several strip-shaped slits growing in a straight line. The tear 53 is designed to facilitate the removal of the dustproof protective film 5.

[0028] The touch screen includes a glass cover, a touch function piece assembled on one side of the glass cover, and an FPC cable connected to the touch function piece and externally connected to a touch control board, wherein the touch function piece is any one of the above-mentioned touch function pieces.

[0029] 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 touch function sheet of a touch screen, comprising: An ITO patterned circuit (11) and a metal trace (12) are designed and formed on a touch function substrate (1) using photolithography. The metal trace (12) is arranged around the periphery of the ITO patterned circuit (11) and is connected to the ITO patterned circuit (11) by a bonding element. The first side (121) of the metal trace (12) is provided with a first bonding position (3), and the second side (122) of the metal trace (12) is provided with a second bonding position (4). The first side (121) and the second side (122) have a non-zero included angle. The touch function substrate (1) has a dustproof protective film (5) covering the first bonding position (3) and the second bonding position (4) on its adjacent sides; the dustproof protective film (5) has an adhesive film (51) along its three adjacent sides, the adhesive film (51) is U-shaped; the two ends of the adhesive film (51) are connected to the side of the touch function substrate (1).

2. The touch screen sheet of claim 1, wherein The two sides of the adhesive film (51) are attached to the upper surface of the touch function substrate (1); the bottom edge of the adhesive film (51) is attached to the upper surface of the ITO graphic circuit (11).

3. The touch panel according to claim 2, wherein The adhesive film (51) is integrally connected to the raised tear strip edge (52) on one side.

4. The touch panel as claimed in claim 3, wherein The touch function substrate (1) is provided with tear lines (53) at the connection between the dustproof protective film (5) and the adhesive film (51). The tear lines (53) are composed of several strip-shaped slits growing in a straight line.

5. A touch screen comprising a glass cover plate, a touch function sheet assembled on one side of the glass cover plate, and an FPC flat cable connected with the touch function sheet and externally connected with a touch control board, characterized in that, The touch function chip is the touch function chip as described in any one of claims 1-4.

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