公开(公告)号：US20080191298A1

公开(公告)日：2008-08-14

申请号：US11686311

申请日：2007-03-14

申请人： Xijian Lin ,  Philip J. Benzel ,  Bjoy Santos ,  Joy Jones

发明人： Xijian Lin ,  Philip J. Benzel ,  Bjoy Santos ,  Joy Jones

IPC分类号： H01L31/00 ,  H01L21/98

CPC分类号： G01J1/4228 ,  G01J1/0488 ,  G01J1/4204 ,  G01J3/465 ,  G01J3/513 ,  G01J2003/516 ,  H01L27/14621 ,  H01L27/14643 ,  H01L27/14685 ,  H01L27/14689 ,  H04N9/045

摘要： A CMOS light detector configured to detect specific wavelengths of light includes a first sensor and a second sensor. The first sensor includes CMOS photocells that are covered by a colored filter layer of a first color that has a first transmittance that allows both light of the specific wavelengths and light of other wavelengths to pass. The second sensor including further CMOS photocells, at least some of which are covered by both a colored filter layer of the first color and a colored filter layer of a second color, stacked one above the other in either order, where the colored filter layer of the second color has a second transmittance that allows light of the other wavelengths to pass. The first sensor produces a first photocurrent, and the second sensor produces a second photocurrent, when light including both the specific and other wavelengths is incident upon the detector. A differential photocurrent, produced by determining a difference between the first and second photocurrents, has a spectral response with at least part of the light of other wavelengths cancelled.

摘要翻译： 被配置为检测特定波长的光的CMOS光检测器包括第一传感器和第二传感器。 第一传感器包括由具有第一透射率的第一颜色的着色滤光层覆盖的CMOS光电管，其允许特定波长的光和其它波长的光通过。 第二传感器包括进一步的CMOS光电管，其中至少一些由第一颜色的有色滤光层和第二颜色的有色滤光层两者以任何顺序叠加在一起，其中彩色滤光层 第二种颜色具有允许其它波长的光通过的第二透射率。 第一传感器产生第一光电流，并且当包括特定波长和其它波长的光入射到检测器上时，第二传感器产生第二光电流。 通过确定第一和第二光电流之间的差产生的差分光电流具有光谱响应，其中至少部分其它波长的光被消除。