Manufacturing method of miniature annular piezoresistor and special device thereof

Abstract

The invention discloses a manufacturing method of a miniature annular piezoresistor, comprising the following steps of: using high temperature resistant gummed paper as a fixing carrier of the miniature annular piezoresistor, using a stainless steel orifice plate with regularly arranged punched holes as a spacing frame of the miniature annular piezoresistor, making the miniature annular piezoresistor to arrange in the stainless steel orifice plate, fixedly adhere to the high temperature resistant gummed paper and then fix on a silkscreen machine for silkscreen, drying, separating the high temperature resistant gummed paper from the miniature annular piezoresistor for reuse, and simultaneously sintering electrode to prepare the finished product miniature annular piezoresistor. According to the invention, the fixing mode of an annular thin flake of the annular piezoresistor is improved and the product no longer shifts after positioning, thus guaranteeing the silkscreen precision and qualified rate.

Description

technical field [0001] The invention relates to the technical field of piezoresistors, in particular to the technical field of miniature ring meter piezoresistors. Background technique [0002] Such as figure 1 As shown, the ring piezoresistor 100 is a ring-shaped sheet with three electrodes (five electrodes are also available). There are three electrodes 101 on the front of the annular sheet 102, the surfaces of the electrodes are coated with silver, and there are gaps between the electrodes with piezoresistive properties. [0003] Ring varistors with a size below Φ3.0mm are called miniature ring varistors, which are mainly used in mobile phone vibration motors. The mobile phone market is developing rapidly, and the status of mobile phones as a necessity in life is gradually rising, which has brought unprecedented development opportunities for many mobile phone manufacturers. However, with the increasingly fierce market competition, manufacturers want to gain more in the ...

AI Technical Summary

Problems solved by technology

[0005] When the existing micro-ring piezoresistor electrode manufacturing method (using template suction and fixing method) is used for large-scale production, it is very difficult to control the matching precision and suction volume of the micro-ring piezoresistor and template processing. There are bad problems such as vacuum suction fixing cannot completely fix the annular sheet of the miniature ring varistor, and vacuum suction will cause the screen plate of the silver machine to be unable to separate from the ring sheet of the miniature ring varistor, resulting in suction and fixing of the template The production qualification rate of the miniature ring varistor electrode manufacturing method is very low, the operation and repeatability cannot meet the requirements, and the obvious defects that cannot be mass-produced on a large scale

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