发明授权
US4362575A Method of making buried channel charge coupled device with means for
controlling excess charge
失效
用于控制过量电荷的装置的掩埋通道电荷耦合器件的方法
- 专利标题: Method of making buried channel charge coupled device with means for controlling excess charge
- 专利标题(中): 用于控制过量电荷的装置的掩埋通道电荷耦合器件的方法
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申请号: US297055申请日: 1981-08-27
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公开(公告)号: US4362575A公开(公告)日: 1982-12-07
- 发明人: Lloyd F. Wallace
- 申请人: Lloyd F. Wallace
- 申请人地址: NY New York
- 专利权人: RCA Corporation
- 当前专利权人: RCA Corporation
- 当前专利权人地址: NY New York
- 主分类号: H01L21/033
- IPC分类号: H01L21/033 ; H01L21/266 ; H01L21/339 ; H01L21/8234 ; H01L27/14 ; H01L27/148 ; H01L29/762 ; H04N5/30 ; H04N5/372 ; H01L27/10 ; H01L21/263
摘要:
The preferred embodiment of a method of making a buried channel CCD starts with a body of P type semiconductor material over which an oxide layer and a photoresist are deposited. Openings are formed to expose regions of the body surface where drains are to be formed and N type impurity atoms are implanted through the openings. The openings are then enlarged to expose an additional area of the surface surrounding the drains and P type atoms are implanted through the enlarged openings to form channel stops. Afterward, the surface of the body is exposed and N type atoms are implanted to form buried channel regions on each side of the channel stops and to convert a thin layer of the channel stops to lightly doped compensation regions extending between the drains and the buried channel regions.
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