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Touch panel, touch screen and preparation method thereof

A touch panel, touch screen technology, applied in instruments, electrical digital data processing, data processing input/output process, etc., can solve the problems of insufficient viscosity, fragile cover, poor performance, etc., and achieve high production efficiency.

Pending Publication Date: 2017-09-12
SHANGHAI COPIOUS OPTICAL S & T CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the fragility of the cover plate in the prior art, insufficient adhesion with OCA optical glue or OCR optical resin, poor impact resistance, poor performance in the head impact test, and after impact It is easy to produce small fragments, and these fragments cannot be bonded and fixed on the touch sensor by OCA optical glue or OCR optical resin, which has the defect of potential safety hazard. A touch panel, a touch screen and a preparation method thereof are provided
The touch panel of the present invention has high production efficiency; excellent performance in the head-touch test; excellent performance in the environmental reliability test, no degumming phenomenon, no bubble generation, and low bubble rebound rate; because the safety problem of the head-touch test is solved , the touch screen can adopt G+G structure, which makes the touch screen have high hardness, wear resistance, long service life and high touch sensitivity

Method used

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  • Touch panel, touch screen and preparation method thereof
  • Touch panel, touch screen and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The touch panel of this embodiment includes a touch sensor (thickness 0.8mm), an adhesive film (125 μm), a second glass cover plate (0.3mm), and a PVB interlayer (0.38mm) from bottom to top. and a first glass cover (0.3mm). figure 1 It is a structural schematic diagram of the touch panel in Embodiment 1, wherein 1 is the first glass cover, 2 is the PVB interlayer, 3 is the second glass cover, 4 is the adhesive film, and 5 is the touch sensor.

[0057] The touch panel preparation method comprises the following steps:

[0058] (1) Die-cutting of PVB film: In the thousand-level dust-free workshop, according to the actual requirements, the PVB film is die-cut according to the size of the touch sensor. The average size of the glass cover plate is 0.5-1mm larger to ensure that the two layers of glass cover plates can be fully bonded during subsequent lamination;

[0059] (2) Cleaning: cleaning the first glass cover plate and the second glass cover plate with ultrasonic wave...

Embodiment 2

[0079] The touch panel of this embodiment includes a touch sensor (thickness 0.5mm), an adhesive film (500 μm), a second glass cover plate (0.2mm), and a PVB interlayer (1.52mm) from bottom to top. and a first glass cover (0.2mm).

[0080] The touch panel preparation method is except following parameters, and all the other are identical with embodiment 1:

[0081] In step (5), during the first preheating lamination process, the temperature is 120°C, the pressure is 4bar, the time is 4min, and the vacuum degree is 10 -3 bar; in the second stage of preheating lamination, the temperature is 220°C, the pressure is 8bar, the time is 4min, and the vacuum is 10 -3 bar; naturally cool the surface of the touch panel precursor to about 50°C;

[0082] In step (7), the exhaust operation is carried out according to the following steps: within 20 minutes, the temperature is raised to 57 ° C for the first time and then the first heat preservation is carried out for 30 minutes. During the f...

Embodiment 3

[0086] The touch panel of this embodiment includes a touch sensor (thickness 0.5mm), an adhesive film (250 μm), a second glass cover plate (0.4mm), and a PVB interlayer (0.76mm) from bottom to top. and a first glass cover (0.4mm).

[0087] The touch panel preparation method is except following parameters, and all the other are identical with embodiment 1:

[0088] In step (5), in the first stage of preheating lamination process, the temperature is 70°C, the pressure is 6bar, and the time is 10min; in the second stage of preheating lamination, the temperature is 170°C, the pressure is 6bar, and the time is 10min ; Naturally cool the surface of the touch panel precursor to about 70°C;

[0089] In step (7), the exhaust operation is carried out according to the following steps: within 20 minutes, the temperature is raised to 63 ° C for the first time and then the first heat preservation is carried out for 30 minutes. During the first heat preservation process, the pressure is rai...

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Abstract

The invention discloses a touch panel, a touch screen and a preparation method thereof. The touch panel comprises a touch sensor, an adhesive film, a first touch screen cover, a PVB interlayer and a second touch screen cover in sequence; the softening points of the first touch screen cover and the second touch screen cover are both at Above 250°C. The touch panel of the present invention has high production efficiency; excellent performance in the head-touch test; excellent performance in the environmental reliability test; , Low temperature storage (‑40℃×500h) and other environmental reliability test, there is no degumming phenomenon, no bubble generation, and the bubble rebound rate is low; because the safety problem of the head-touch test is solved, the touch screen can adopt the G+G structure, The touch screen has high hardness, wear resistance, long service life and high touch sensitivity.

Description

technical field [0001] The invention relates to a touch panel, a touch screen and a preparation method thereof. Background technique [0002] The touch screen includes a touch panel (English touch panel, referred to as TP, also known as "touch screen") and a liquid crystal display (LCD), which is an inductive liquid crystal display device that can receive input signals such as contacts. When graphic buttons are displayed on the screen, the tactile feedback system on the screen can drive various connecting devices according to the pre-programmed program, which can be used to replace the mechanical button panel and create vivid audio-visual effects through the liquid crystal display screen. As the latest computer input device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction. It endows multimedia with a new look and is a very attractive new multimedia interactive device. It is mainly used in vehicle navigation (central...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/0414G06F3/044G06F2203/04103
Inventor 陈君李涛
Owner SHANGHAI COPIOUS OPTICAL S & T CO LTD
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