TAN Liu-xi1, ZHAO Gen-bao2, LIU Sheng1, et al. Study on process of surface-manufacturing nitride-diaphragm sensor[J]. 2008, (2): 59-60+64. DOI: 10.13873/j.1000-97872008.02.028.
A nitride-diaphragm sensor with polysilicon piezoresistors is introduced.The sensor is manufactured with two different surface-micromachined processes
and the result indicates the improved process is better.The resistance error of Wheatstone bridge is decreased because every bridge is made up with four series-wound resistance on a diaphragm arranged symmetrically.Sample is made and the characteristic of voltage output is tested.The results show that the linearity of voltage output of the sensor is good when the sensor is supplied with invariable current.The sensor has self-protection ability when overloaded.
关键词
Keywords
references
基于Si 3 N 4 薄膜的压力传感器 [J]. 王奇,赵湛,耿照新,方震,曾欢欢,张博军. 传感器与微系统 . 2006(03)