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Capacitor touch screen manufacturing process

A technology of capacitive touch screen and manufacturing process, which is applied in the direction of electrical digital data processing, instrumentation, input/output process of data processing, etc., can solve the problem of affecting product appearance and service life, easily generating bubbles, and affecting the service life of touch screen and other issues, to achieve the effect of easy control of mass production yield, reduce the possibility of air bubbles, and beautiful appearance

Inactive Publication Date: 2013-12-11
GUANGDONG GREEN PRECISION COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The button logo on the touch screen is set on the bonding surface of the transparent protective screen and the touch sensor, and there will be air bubbles due to the height difference, which will affect the appearance and service life of the product
[0007] In order to solve the technical problem that the existing button icon is attached to the surface of the touch sensor, it is easy to generate air bubbles and affect the service life of the touch screen. "a kind of capacitive touch screen" filed a patent application with the State Intellectual Property Office, requesting technical protection, first sorting out the manufacturing process of "a kind of capacitive touch screen", and requesting the protection of the State Intellectual Property Office

Method used

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  • Capacitor touch screen manufacturing process

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Experimental program
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Effect test

Embodiment 1

[0033] see figure 1 A capacitive touch screen includes: a display screen 2 at the bottom for displaying images; a cover 1 at the top for protecting an ITO FILM 3, and the ITO FILM 3 is located at the display screen 2 and the cover 1 In between, the cover plate 1 and the ITO FILM 3 are glued together through the OCA 4, and the OCA 4 is dug with a hole 5 for placing a button icon, and the size of the hole 5 is smaller than that of the button icon (not shown). The actual size of the peripheral extension is 40-50 microns, and the hole position 5 is a through hole.

Embodiment 2

[0035] A manufacturing process for a capacitive touch screen, the steps comprising:

[0036] S1, prepare ITO (Indium Tin Oxides, nano-indium tin metal oxide) FILM: cut the ITO FILM roll film according to the specification size to obtain ITO FILM, wherein the square resistance of the ITO FILM is 150±50Ω;

[0037] S2, printing protective glue: printing protective glue on the non-conductive surface of the ITO FILM, the thickness of the protective glue is 8-12um;

[0038] S3, aging treatment: put the ITO FILM into the oven for baking and aging;

[0039] S4, printing acid resistance: acid resistance is printed on the aged ITO FILM, and the deviation between the acid resistance and the film target during printing is ≤0.1mm;

[0040] S5, UV baking: put the ITO FILM into the oven for baking;

[0041] S6, acid-base etching: put the baked ITO FILM into an acid etching solution for acid etching, and then put the acid-etched ITO FILM into an alkaline etching solution for alkaline etchin...

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Abstract

The invention discloses a capacitor touch screen manufacturing process. By digging a hole in OCA (Optical Clear Adhesive) and placing a button icon in the OCA, the process can realize embedment of the button icon, thereby greatly reducing the possibility of bubble generation during bonding and pressing, ensuring the service life of the products and having artistic product appearance; besides, the ITO (Indium Tin Oxide) Film is processed by mature laser process, so that the yield in volume production can be easily controlled.

Description

technical field [0001] The invention relates to the field of capacitive touch screen manufacturing technology, in particular to a capacitive touch screen manufacturing process, a manufacturing process capable of producing a capacitive touch screen that prevents bubbles from occurring. Background technique [0002] Touch screens are composite touch screens used in electronic products such as mobile phones, e-books, and digital cameras, among which capacitive touch screens are the most commonly used type of touch screens. [0003] The capacitive touch screen works by using the current induction of the human body. The capacitive touch screen is usually a four-layer composite glass screen. When the user's finger touches the capacitive touch screen, due to the electric field of the human body, the user and the surface of the capacitive touch screen form a coupling capacitance (for high-frequency current For example, capacitance can be regarded as a conductor), so the finger draw...

Claims

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Application Information

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IPC IPC(8): G06F3/044
Inventor 吴宝玉方维祥
Owner GUANGDONG GREEN PRECISION COMPONENTS CO LTD
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