Capacitive screen for preventing touch function failure

Abstract

The utility model discloses a capacitive screen of preventing touch function failure, include: display module, the one side of display module is bonded with the cover plate setting, the other side of display module is bonded with the anti -touch failure subassembly setting, be provided with first optical adhesive layer between display module and cover plate, be provided with second optical adhesive layer between display module and anti -touch failure subassembly. The device simple structure, convenient to use, through pasting a layer of transparent glass in the back of capacitive touch screen, reach protection ITO circuit, when the water vapor condensation will not cause the electrification short circuit between the circuit, and low cost, do not affect the overall transmittance of touch screen.

Description

Technical Field

[0001] This utility model relates to the field of touch screen device technology, specifically to a capacitive screen that prevents touch function failure. Background Technology

[0002] A touchscreen is an input device that allows users to control computers or other electronic devices by touching icons or text on the screen. This technology eliminates the need for traditional keyboard and mouse operations, making human-computer interaction more direct and natural. Touchscreens are widely used in information retrieval in public places, video games, multimedia teaching, industrial control, and other fields. A touchscreen typically consists of a touch detection component and a touchscreen controller. The touch detection component is installed in front of the display screen to detect the user's touch position and send it to the touchscreen controller. The main function of the touchscreen controller is to receive touch information from the touch detection device, convert it into touch point coordinates, and then send it to the CPU. Simultaneously, it receives and executes commands from the CPU.

[0003] A search revealed Chinese patent application CN202210766300.5, which relates to a capacitive touchscreen. The touchscreen includes a substrate with a touch area and a peripheral area. The touch area has multiple sensing electrodes, and the peripheral area has peripheral conductors. The peripheral area features at least one gating circuit, comprising signal lines, multiple switching devices, and multiple gating control line groups. Each sensing electrode is electrically connected to the signal line via corresponding switching devices. Each gating control line group includes at least one gating control line, which controls the signal line to be connected to one or more corresponding sensing electrodes. This capacitive touchscreen enables flexible gating of different sensing electrodes, reducing detection time and improving response speed, thereby increasing detection sensitivity and efficiency.

[0004] However, the above-mentioned technical solutions cannot solve the problem caused by moisture condensation on the back of traditional capacitive touchscreens. The exposed ITO (indium tin oxide) circuitry on the back of capacitive touchscreens is unprotected. When used in high-humidity environments, moisture condensation can cause short circuits between the ITO circuitry, resulting in touch function failure. Some capacitive touchscreens have an anti-fog film applied to the back to protect the ITO circuitry. Moisture condensation does not affect the ITO circuitry, but this is costly and reduces the overall light transmittance of the touchscreen. Therefore, we need to propose a capacitive touchscreen that prevents touch function failure. Utility Model Content

[0005] The purpose of this invention is to provide a capacitive screen that prevents touch function failure. This device has a simple structure and is easy to use. By adding a layer of transparent glass to the back of the capacitive touch screen, it protects the ITO circuitry and prevents short circuits between the circuits when moisture condenses. It is also low in cost and does not affect the overall light transmittance of the touch screen, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A capacitive touchscreen that prevents touch function failure includes:

[0008] Display module;

[0009] A cover plate is bonded to one side of the display module, and an anti-touch failure component is bonded to the other side of the display module;

[0010] A first optical adhesive layer is provided between the display module and the cover plate, and a second optical adhesive layer is provided between the display module and the anti-touch failure component.

[0011] Preferably, the anti-touch failure component is a one-piece molded transparent glass structure.

[0012] Preferably, the display module includes a liquid crystal display layer, an electrode layer, an insulating layer, and an ITO layer stacked sequentially. The liquid crystal display layer, electrode layer, insulating layer, and ITO layer are bonded together sequentially with optical adhesive. The insulating layer is used to isolate the conductive layer from the circuitry of the underlying layer. The electrode layer has multiple electrodes distributed on it for detecting the position of touch points. The liquid crystal display layer is used to display images and information.

[0013] Preferably, an anti-glare layer is further provided between the ITO layer and the cover plate. The anti-glare layer is an AG coating layer, which is formed on the ITO layer by coating and gelling with liquid sol.

[0014] Preferably, a protective film is also adhered to the cover plate. The protective film is a PET film and is coated with a silver ion antibacterial coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model features a cover plate on one side of the display module and an anti-touch component on the other side. The device has a simple structure and is easy to use. By adding a layer of transparent glass to the back of the capacitive touch screen, the ITO circuitry is protected, preventing short circuits between circuits when moisture condenses. It is also low in cost and does not affect the overall light transmittance of the touch screen. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Display module; 101. Liquid crystal display layer; 102. Electrode layer; 103. Insulating layer; 104. ITO layer; 105. Anti-glare layer;

[0019] 2. Cover plate; 3. Anti-touch failure component; 4. First optical adhesive layer; 5. Second optical adhesive layer; 6. Protective film; 7. Silver ion antibacterial coating. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1 This utility model provides a technical solution:

[0022] A capacitive touchscreen that prevents touch function failure includes:

[0023] Display module 1;

[0024] A cover plate 2 is bonded to one side of the display module 1, and an anti-touch failure component 3 is bonded to the other side of the display module 1. A first optical adhesive layer 4 is disposed between the display module 1 and the cover plate 2, and a second optical adhesive layer 5 is disposed between the display module 1 and the anti-touch failure component 3. The anti-touch failure component 3 is a one-piece transparent glass structure.

[0025] This utility model provides a cover plate 2 on one side of the display module 1 and an anti-touch component on the other side to prevent moisture condensation from damaging the ITO circuit. In actual use, a transparent glass of appropriate thickness is added to the back of the capacitive touch screen to protect the exposed ITO circuit. In this way, when the capacitive touch screen is used in a high humidity environment, moisture condenses on the transparent glass, which isolates the moisture. Furthermore, since the transparent glass is non-conductive, it does not affect the touch function of the capacitive touch screen.

[0026] Furthermore, transparent glass is used instead of the existing anti-fog film solution on the back of the capacitive touchscreen to ensure the overall light transmittance of the capacitive touchscreen.

[0027] In summary, this device has a simple structure and is easy to use. By adding a layer of transparent glass to the back of the capacitive touchscreen, it protects the ITO circuitry and prevents short circuits between the circuits when moisture condenses. It is also low in cost and does not affect the overall light transmittance of the touchscreen.

[0028] The following steps are used when assembling the touchscreen:

[0029] Step 1: Use a laminator to apply OCA (Optical Adhesive) to the back of the capacitive touchscreen;

[0030] Step 2: After aligning the transparent glass with the capacitive touch screen, use a vacuum bonding machine to bond them together.

[0031] When OCA is attached to the back of a capacitive touchscreen using a laminating machine, the lamination pressure is 0.3-0.65MPA, the lamination speed is 100-300MM / S, and the lamination gap is 0.5-10MM.

[0032] After bonding, OCA degassing is performed, with a degassing pressure of 0.5 MPa, a degassing time of 3-5 minutes, and a degassing temperature of 35-40℃.

[0033] Then, the capacitive touch screen is bonded to the transparent glass. Specifically, a vacuum pressing method using an alignment fixture can be used, with a pressing pressure of 0.3-0.6 MPa, a pressing time of 3-8 seconds, and a pressing temperature of room temperature.

[0034] Finally, the finished product is degassed, with a degassed pressure of 0.5-0.6 MPa, a degassed time of 15-30 minutes, and a degassed temperature of 40-50℃.

[0035] In addition, please see Figure 1 :

[0036] The display module 1 includes a liquid crystal display layer 101, an electrode layer 102, an insulating layer 103, and an ITO layer 104, which are sequentially stacked. The liquid crystal display layer 101, electrode layer 102, insulating layer 103, and ITO layer 104 are bonded together with optical adhesive. The insulating layer 103 is used to isolate the conductive layer from the underlying circuitry. The electrode layer 102 has multiple electrodes distributed on it for detecting the position of touch points. The liquid crystal display layer 101 is used to display images and information. An anti-glare layer 105 is also provided between the ITO layer 104 and the cover plate 2. The anti-glare layer 105 is an AG coating layer, which is formed on the ITO layer 104 as a thin film through the coating and gelation of liquid sol.

[0037] By setting an anti-glare layer 105 in the display module 1, the clarity of the picture is improved, screen reflection is reduced, and the image is clearer and more realistic, allowing viewers to enjoy a better visual effect. This avoids glare on the screen under strong light, prevents eye fatigue caused by prolonged screen viewing, and effectively protects the user's eyesight.

[0038] Additionally, please see Figure 1 :

[0039] A protective film 6 is also adhered to the cover plate 2. The protective film 6 is a PET film and is coated with a silver ion antibacterial coating 7.

[0040] On the one hand, the PET film material protective film 6 can effectively prevent scratches and wear on the LCD screen. The surface is anti-static and not easy to accumulate dust and get dirty. It adopts advanced coating technology, so it is not easy to leave fingerprints when directly touched. It has special anti-reflection and glare functions, eliminating 98% of the external ambient light and strong glare.

[0041] On the other hand, the silver ion antibacterial coating 7 on the protective film 6 can prevent pollution and bacterial growth on the screen due to prolonged use, ensuring the screen is clean, hygienic and tidy, and providing users with a good user experience.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A capacitive touchscreen for preventing touch function failure, characterized in that, include: Display module (1); A cover plate (2) is bonded to one side of the display module (1), and an anti-touch failure component (3) is bonded to the other side of the display module (1). A first optical adhesive layer (4) is provided between the display module (1) and the cover plate (2), and a second optical adhesive layer (5) is provided between the display module (1) and the anti-touch failure component (3).

2. A capacitive touchscreen for preventing touch function failure according to claim 1, characterized in that: The anti-touch failure component (3) is a one-piece transparent glass structure.

3. A capacitive touchscreen for preventing touch function failure according to claim 1, characterized in that: The display module (1) includes a liquid crystal display layer (101), an electrode layer (102), an insulating layer (103), and an ITO layer (104) stacked sequentially. The liquid crystal display layer (101), the electrode layer (102), the insulating layer (103), and the ITO layer (104) are bonded together sequentially with optical adhesive. The insulating layer (103) is used to isolate the conductive layer from the circuit of the underlying layer. The electrode layer (102) has multiple electrodes distributed on it for detecting the position of the touch point. The liquid crystal display layer (101) is used to display images and information.

4. A capacitive touchscreen for preventing touch function failure according to claim 3, characterized in that: An anti-glare layer (105) is also provided between the ITO layer (104) and the cover plate (2). The anti-glare layer (105) is an AG coating layer, which is formed on the ITO layer (104) by coating and gelling with liquid sol.

5. A capacitive touchscreen for preventing touch function failure according to claim 1, characterized in that: A protective film (6) is also bonded to the cover plate (2). The protective film (6) is a PET film and is coated with a silver ion antibacterial coating (7).

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