Method for Realizing Impedance Reduction of Capacitive Screen and Capacitive Screen
A technology of impedance reduction and capacitive screen, which is applied in the field of capacitive screen, can solve the problems of too long channel and high resistance, IC cannot be driven, etc., and achieve the effect of controlling product cost and reducing channel resistance
Active Publication Date: 2017-11-03
四川点燃科技有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a method for reducing the impedance of the capacitive screen in view of the deficiencies in the prior art. The channel resistance of the capacitive screen is reduced by metal plating on the surface of the pattern, so as to solve the problem that the IC cannot driving problem; the present invention also provides a capacitive screen that satisfies the method
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Embodiment
[0025] Such as figure 1 and figure 2 As shown, the method for realizing the impedance reduction of the capacitive screen in this embodiment includes the following steps:
[0026] A method for reducing the impedance of a capacitive screen, the method comprising the following steps:
[0027] (1) A capacitive screen is composed of an ITO glass / film substrate and an edge conduction circuit, and a pattern is made on the ITO glass or film substrate; after the ITO glass or film substrate that needs to be patterned is cleaned, it is protected and processed. Leave a gap of not more than 0.03mm between the patterns produced.
[0028] (2) Metal-plate the surface of the finished pattern; after metal-plating, activation, cleaning, etching and chemical gold-plating can be performed according to the function setting standards of the capacitive screen, and the wiring and local parts of the metal area of the capacitive screen The implementation of the control circuit routing is completed...
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The invention discloses a method for reducing the impedance of a capacitive screen. The capacitive screen is composed of an ITO glass / film substrate and an edge conduction circuit, and a pattern is made on the ITO glass or film substrate; the surface of the pattern is metal-plated. ; Surface treatment is carried out on the metal-plated ITO glass or film substrate; baking and forming, the metal-plated capacitive screen is baked and dried, then covered with a protective film, the electroplating process is completed and packaged. The channel resistance of the capacitive screen is reduced by metal plating on the surface of the pattern, which solves the problem that the IC cannot be driven due to the excessively long channel and the high resistance; As a result, there may be conduction in many places, and it will not affect the shadow elimination effect, effectively controlling the product cost.
Description
technical field [0001] The invention relates to the design technology of a capacitive screen, in particular to a method for reducing the impedance of a capacitive screen, and more particularly to a capacitive screen satisfying the method. Background technique [0002] The capacitive touch screen is coated with a layer of transparent special metal conductive substance on the glass surface. When a finger touches the metal layer, the capacitance of the contact will change, causing the frequency of the oscillator connected to it to change. By measuring the frequency change, the touch position can be determined to obtain information. If the channel resistance of the capacitive screen is too large, it will affect the identification ability of the IC. The conventional method is to reduce the surface resistance of the material (such as from 80-100 ohms to 30-60 ohms). There are two ways to realize PATTERN in this method. One is the yellow light process, which changes the PATTERN ga...
Claims
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IPC IPC(8): G06F3/044
Inventor 向火平
Owner 四川点燃科技有限公司