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759results about How to "Prevent deformation" patented technology

Condenser microphone having flexure hinge diaphragm and method of manufacturing the same

A micromini condenser microphone having a flexure hinge-shaped upper diaphragm and a back plate, and a method of manufacturing the same are provided.
The method includes the steps of: forming a lower silicon layer and a first insulating layer; forming an upper silicon layer to be used as a back plate on the first insulating layer; forming a plurality of sound holes by patterning the upper silicon layer; forming a second insulating layer on the upper silicon layer; forming a conductive layer on the upper silicon layer having the sound holes, and forming a passivation layer on the conductive layer; forming a sacrificial layer on the passivation layer; depositing a diaphragm on the sacrificial layer, and forming a plurality of air holes passing through the diaphragm; forming electrode pads on the passivation layer and a region of the diaphragm; and etching the sacrificial layer, the passivation layer, the conductive layer, the upper silicon layer, the first insulating layer and the lower silicon layer to form an air gap between the diaphragm and the upper silicon layer.
Consequently, due to the flexible diaphragm, a manufacturing process using semiconductor MEMS technology may improve the sensitivity of the condenser microphone and reduce the size of the condenser microphone, thereby enabling integration into a portable terminal.
Owner:ELECTRONICS & TELECOMM RES INST

Flat knitting machine bottom plate with motor transmission

The invention relates to a flat knitting machine bottom plate with motor transmission. At present, the flat knitting machine bottom plate with motor transmission which has a simple structure, a reasonable design and reliable performance does not exist. The flat knitting machine bottom plate with motor transmission comprises a bottom plate body, a left homing triangle plate, a right homing triangle plate, a left needle turning and connecting triangle plate, a right needle turning and connecting triangle plate, a left needle lifting and hanging head triangle plate and a right needle lifting and hanging head triangle plate, and is characterized by also comprising a slide plate motor, a gear, a rack, a sliding plate, a sliding plate guide seat, a needle turning motor, a needle turning cam, a fixed plate, a bearing, a silencing plate, a left fixed column, a right fixed column, a left connecting column, a right connecting column, a left pressure spring, a right pressure spring, a left positioning column, a right positioning column, a left lug, a right lug, a left reset spring and a right reset spring, wherein the left homing triangle plate and the right homing triangle plate are both movably connected to the bottom plate body, a left homing cylindrical sleeve and a right homing cylindrical sleeve respectively arranged on the left homing triangle plate and the right homing triangle plate are respectively arranged in a left chute and a right chute of the sliding plate, and the left needle turning and connecting triangle plate, the right needle turning and connecting triangle plate, the left needle lifting and hanging head triangle plate and the right needle lifting and hanging head triangle plate are all movably connected to the bottom plate body. The flat knitting machine bottom plate with the motor transmission has the advantages of reasonable design, reliable performance, stable transmission and no noise production.
Owner:桐乡市强隆机械有限公司
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