Haynes and Boone, LLP
Image sensor for sensing LED light with reduced flickering
An image sensor device has a first number of first pixels disposed in a substrate and a second number of second pixels disposed in the substrate. The first number is substantially equal to the second number. A light-blocking structure disposed over the first pixels and the second pixels. The light-blocking structure defines a plurality of first openings and second openings through which light can pass. The first openings are disposed over the first pixels. The second openings are disposed over the second pixels. The second openings are smaller than the first openings. A microcontroller is configured to turn on different ones of the second pixels at different points in time.
TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
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Chun-Hao Kuo-Cheng Hsin-Chi Yun-Wei
Chou Lee Chen Cheng