发明名称 |
Optical sensor with photo TFT |
摘要 |
An optical sensor is disclosed. Each sensor pixel circuit of the optical sensor includes a first readout TFT for reading out voltage of a charge node, a second readout TFT for controllably resetting the charge node to a first reset voltage, and a photo TFT for discharging the voltage at the charge node to a second reset voltage in absence of an object(s).
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申请公布号 |
US7940252(B2) |
申请公布日期 |
2011.05.10 |
申请号 |
US20070874897 |
申请日期 |
2007.10.18 |
申请人 |
HIMAX TECHNOLOGIES LIMITED |
发明人 |
CHUANG KAI-LAN;CHEN YING-LIEH |
分类号 |
G06F3/042;G06F3/038;G06F3/041 |
主分类号 |
G06F3/042 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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