发明申请
US20120187513A1 LIGHT SENSOR HAVING IR CUT AND COLOR PASS INTERFERENCE FILTER INTEGRATED ON-CHIP
有权
具有红外线切割和彩色通道干涉滤光片的光传感器集成片上
- 专利标题： LIGHT SENSOR HAVING IR CUT AND COLOR PASS INTERFERENCE FILTER INTEGRATED ON-CHIP
- 专利标题（中）： 具有红外线切割和彩色通道干涉滤光片的光传感器集成片上
-
申请号： US13187729申请日： 2011-07-21
-
公开(公告)号： US20120187513A1公开(公告)日： 2012-07-26
- 发明人: Prashanth Holenarsipur , Zhihai Wang , Nicole Dorene Kerness
- 申请人： Prashanth Holenarsipur , Zhihai Wang , Nicole Dorene Kerness
- 申请人地址： US CA Sunnyvale
- 专利权人： Maxim Integrated Products, Inc.
- 当前专利权人： Maxim Integrated Products, Inc.
- 当前专利权人地址： US CA Sunnyvale
- 主分类号： H01L31/0232
- IPC分类号： H01L31/0232 ; H01L31/18
摘要：
A light sensor is described that includes an IR cut interference filter and at least one color interference filter integrated on-chip. The light sensor comprises a semiconductor device (e.g., a die) that includes a substrate. Photodetectors are formed in the substrate proximate to the surface of the substrate. An IR cut interference filter is disposed over the photodetectors. The IR cut interference filter is configured to filter infrared light from light received by the light sensor to at least substantially block infrared light from reaching the photodetectors. At least one color interference filter is disposed proximate to the IR cut interference filter. The color interference filter is configured to filter visible light received by the light sensor to pass light in a limited spectrum of wavelengths (e.g., light having wavelengths between a first wavelength and a second wavelength) to at least one of the photo detectors.