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Voice coil motor elastic piece and manufacturing method thereof

The technology of a voice coil motor and a manufacturing method, which is applied to manufacturing tools, electromechanical devices, laser welding equipment, etc., can solve the problems of unfavorable industrialized production, long lead time, and high cost, so as to save material costs and reduce lead time. , the effect of high yield

Inactive Publication Date: 2017-05-31
TRULY OPTO ELECTRONICS
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AI Technical Summary

Problems solved by technology

In the autofocus camera module used on smart mobile terminals, the shrapnel inside the voice coil motor is currently produced by wet etching. The main process is: substrate → double-sided dry film → double-sided exposure → double-sided development → double-sided Surface acid engraving → double-sided film removal → finished product, but wet etching not only has long lead time, high cost and low yield, but also needs to customize different film tools, which is not conducive to industrial production

Method used

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  • Voice coil motor elastic piece and manufacturing method thereof
  • Voice coil motor elastic piece and manufacturing method thereof
  • Voice coil motor elastic piece and manufacturing method thereof

Examples

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Embodiment 1

[0038] A method for making a shrapnel of a voice coil motor, specifically, etching a preset pattern on a substrate with a thickness of about 0.05 mm by using a laser etching machine to obtain such a figure 1 Voice coil motor shrapnel shown. Among them, the laser of the laser etching machine is a picosecond laser with a wavelength of 515nm, a pulse width of <10ps, and a repeatability of ±2um; the laser process parameters are as follows: power 40%, frequency 540KHZ, speed 450mm / s.

[0039] Measure the produced voice coil motor shrapnel by conventional detection methods, and select 29 points (such as figure 2 shown) were repeated 7 times, and some of the 29 points were the diameter of the hole, and some were the distance between two points. The specific measurement data are as follows.

[0040]

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Abstract

The invention discloses a voice coil motor elastic piece and a manufacturing method thereof. The voice coil motor elastic piece is manufactured by etching a preset pattern on a base plate via a laser etching machine A laser etching technology is used for manufacturing the voice coil motor elastic piece without using an expensive exposure, development, acid etching and membrane removing production line; compared with an existing wet etching technology, the laser etching technology is higher in technological accuracy, better in manufacturing stability, effectively shortened in production cycle, reduced in investment and production costs, and convenient to achieve industrial production.

Description

technical field [0001] The invention relates to a shrapnel of a voice coil motor and a manufacturing method thereof. Background technique [0002] At present, in the manufacturing of mobile phones and other smart terminals, the competition among manufacturers is becoming more and more fierce, and the unit price, delivery cycle and quality of products will become the bargaining chips of manufacturers. In the autofocus camera module used on smart mobile terminals, the shrapnel inside the voice coil motor is currently produced by wet etching. The main process is: substrate → double-sided dry film → double-sided exposure → double-sided development → double-sided Surface acid engraving → double-sided film removal → finished product, but wet etching not only has long lead time, high cost and low yield, but also needs to customize different film tools, which is not conducive to industrial production. Contents of the invention [0003] The technical problem to be solved by the pr...

Claims

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Application Information

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IPC IPC(8): H02K33/18B23K26/362
CPCH02K33/18B23K26/361
Inventor 冯毅周伟杰邱泽银
Owner TRULY OPTO ELECTRONICS
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