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Method for improving tip effect of segmented golden finger arc lead angle

A cutting-edge effect and gold-finger technology, applied in the field of optical modules, can solve the problems of gold-finger printing ink infiltration, tip effect, etc., to improve the appearance of gold plating, avoid micro-short and signal integrity problems, and improve ink adhesion. Effect

Pending Publication Date: 2022-03-29
ZHUHAI CHINA EAGLE ELECTRONIC CIRCTCUIS CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for improving the tip effect of segmented gold finger arc leading angles, which solves the phenomenon of bleeding and tip effect that are easy to occur when gold finger printing ink

Method used

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  • Method for improving tip effect of segmented golden finger arc lead angle
  • Method for improving tip effect of segmented golden finger arc lead angle
  • Method for improving tip effect of segmented golden finger arc lead angle

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specific Embodiment 1

[0027] Such as Figure 1-3 As shown, a method for improving the sharp-point effect of segmented golden finger arc guide angles, including golden fingers, the processing method of golden fingers is as follows:

[0028] Sp1: surface pretreatment, the surface treatment is to clean the outer surface of the gold finger for later use;

[0029] Sp2: surface etching, the surface etching is to etch the broken joints of the gold finger after pretreatment into an arc shape;

[0030] Sp3: surface printing and oiling, printing and oiling is to brush ink on the surface of the gold finger after surface etching, and the anti-oiling printing of broken joints is 6mil wide;

[0031] Sp4: Surface copper thickness treatment, the surface copper thickness treatment is to make the position of the copper thickness drop on both sides of the gold finger after printing ink into an I-shaped:

[0032] Sp5: Finishing and closing. Finishing and closing is to clean up the thick copper residue after cutting,...

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Abstract

The invention provides a method for improving the tip effect of a segmented golden finger arc lead angle, and relates to the technical field of optical modules, a golden finger is included, a broken joint position of the golden finger is etched into an arc shape, then surface printing is performed, the broken joint position is subjected to anti-plating oil printing with the width of 6 mil, meanwhile, the copper thickness difference positions on the two sides of the golden finger are made into an I shape, and the ink binding force is improved; during gold plating, trace diffusion plating grows along the arc-shaped edge, gold plating grows along the arc line of the broken section position within 1mil after gold finger lead and broken section position etching, and after gold finger lead and broken section position alkaline etching, a tiny tip is arc-shaped and is attached to the edge of the broken section position, so that a tip effect or an unobvious tip effect cannot be caused. The gold plating appearance problem of the broken joint position of the segmented golden finger is perfectly improved, and the problems of slight shortness and signal integrity caused by the point effect of gold infiltration are avoided.

Description

technical field [0001] The invention relates to the technical field of optical modules, in particular to a method for improving the sharp-point effect of segmented golden fingers with circular arc leading angles. Background technique [0002] Gold fingers are computer hardware, such as between the memory stick and the memory slot, the graphics card and the graphics card slot, etc. All signals are transmitted through the gold fingers. The gold fingers are composed of many golden conductive contacts. Gold-plated and the conductive contacts are arranged like fingers. The gold fingers are actually covered with a layer of gold on the copper clad board through a special process. Because gold has strong oxidation resistance and strong conductivity, all memory processing units The data flow and electron flow are exchanged with the PC system through the contact between the golden finger and the memory slot, which is the output and input port of the memory, so its manufacturing proces...

Claims

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Application Information

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IPC IPC(8): H05K3/12H05K3/26
CPCH05K3/125H05K3/26
Inventor 李清春卢赛辉胡玉春张千
Owner ZHUHAI CHINA EAGLE ELECTRONIC CIRCTCUIS CO LTD
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