Button panel and surface circuit manufacture procedure thereof

Abstract

The invention relates to a button panel, which comprises a substrate, a first conductive layer, a second conductive layer, a metal elastic wafer and a packaging film, wherein the first conductive layer is arranged on an acting surface of the substrate; the first conductive layer comprises at least one key part and at least one first circuit electrically conducted with the key part; the second conductive layer is arranged on the substrate and is insulated with the first conductive layer; the second conductive layer comprises at least one joint near the key part and at least one second circuit electrically conducted with the joint; the metal elastic wafer is combined on the key part; and the packaging film is coated on the acting surface of the substrate, thus the button panel is formed, which can effectively save manufacturing cost, improve yield and reduce impedance. The invention also provides a button panel surface circuit manufacture procedure.

Description

technical field [0001] The invention relates to a substrate structure and its manufacturing process, especially to a button board and its surface circuit manufacturing process. Background technique [0002] With the continuous advancement of science and technology in modern society, electronic products are widely used in daily life. In order to enhance competitiveness, efforts are being made to reduce manufacturing costs, improve manufacturing processes and increase yields. see figure 1 , is a known silver paste elastic sheet button board, which is set in the electronic product and can be electrically connected with the main board in the electronic product. Such as the control button of a digital camera, the button of a mobile phone, etc., the silver paste elastic thin sheet button board includes: a substrate 1a; a plurality of first lines 2a, one end of the first line 2a forms a circular key portion 21a, the The button portion 21a is used to set a metal elastic thin sheet...

AI Technical Summary

Problems solved by technology

[0003] However, the silver paste elastic sheet button board is formed by the silver paste printing process to form the first lines 2a and the second lines 3a. The silver paste printing process is not only very expensive, but also the first lines 2a and the second lines 3a are very expensive. It is easy to break at the bending place, resulting in the inability to transmit electronic signals

Also, the material of silver is expensive, the manufacturing cost is high, and the silver paste is a kind of synthetic material, and the impedance is high

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