Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for producing a button circuit board

A production method and circuit board technology, which is applied in the manufacture of circuits, printed circuits, and printed circuits, can solve problems such as damage to the gold surface, damage to the gold surface of keypad circuit boards, rough molds, etc., and achieve high efficiency and reduce scrap rates.

Active Publication Date: 2016-04-20
SHENGHUA ELECTRONICS HUIYANG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chips and dust generated by die punching are easy to contaminate the surface of the halogen-free sheet after die punching, and then damage the gold surface during the pressing and baking step
[0003] On the other hand, the accumulation of debris and dust in the mold during the stamping step will also damage the gold surface on the semi-finished keypad circuit board, and will also affect the quality of the finished Keypad circuit board
Because most of the molds used in the current die punching step are relatively rough and have many burrs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This embodiment provides a method for producing a button circuit board that prevents gold surface from being crushed, and the steps are as follows:

[0023] (1) Drilling, CUI (copper electroplating primary), dry film, CUII (copper electroplating secondary) and other pretreatments are completed sequentially on the raw material halogen-free board of the button circuit board.

[0024] (2) Perform optical automatic inspection on the semi-finished products of key circuit boards that have completed the pretreatment. In this embodiment, a ccd is first selected to scan the semi-finished button circuit board, and then a logical comparison is performed after processing the scanned image, so as to obtain a quality report of the semi-finished button circuit board.

[0025] (3) The semi-finished button circuit board that has passed the optical automatic inspection is subjected to the steps of anti-soldering, text printing, and gold treatment.

[0026] (4) Press and bake the semi-fi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a key circuit board production method, which comprises the following steps of: successively carrying out semi-finished product testing, a welding-proof working procedure, a character printing working procedure, gold-melting processing, compete-board pressing baking, a stamping working procedure, cleaning and finished product test on a halogen-free plate finishing pretreatment. The invention creatively provides a method that the stamping is carried out after the compete-board pressing baking is carried out on the semi-finished product of the key circuit board in the key circuit board production step, and the problem that the gold surface of the semi-finished product of the key circuit board is crushed during pressing baking due to the fact that fragments are attached to the key circuit board in the stamping step in the original production method is thoroughly solved.

Description

technical field [0001] The invention relates to the field of circuit board production, in particular to a method for producing a button circuit board. Background technique [0002] The keypad circuit board is the Keypad circuit board, because this type of circuit board has a higher conduction rate requirement, because the gold surface of the Keypad circuit board needs to be as smooth as possible. Keypad circuit boards usually use halogen-free boards as raw materials. After drilling, CUI (copper plating primary), dry film, CUII (copper plating secondary copper) pretreatment, semi-test, solder mask, text, gold, die punching , cleaning, testing, pressing and baking, finished product inspection and other steps. Chips and dust generated by die punching are easy to contaminate the surface of the halogen-free plate after die punching, and then damage the gold surface during the pressing and baking step. [0003] On the other hand, the accumulation of debris and dust in the mold d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05K3/00H01H11/00
Inventor 周定忠
Owner SHENGHUA ELECTRONICS HUIYANG