DEVICE AND METHOD FOR DETECTING LIGHT INTENSITY, AND DISPLAY DEVICE

WIPO Patent Application WO/2019/033863

A1

A device (100) for detecting light intensity, comprising a photosensitive device (110), an input circuit (120), an amplification circuit (130), a feedback circuit (140), a storage circuit (150) and an output circuit (160). The photosensitive device (110) is coupled to a first voltage signal end (VDD) and a first node (a). The input circuit (120) provides, under the control of an input signal, the first node (a) with a first voltage signal, so as to control the voltage of the first node (a). The amplification circuit (130) provides, under the control of the voltage of the first node (a), a second node (b) with a second voltage signal from a second voltage signal terminal (VSS), so as to control the voltage of the second node (b). The feedback circuit (140) couples, under the control of a reset signal, the first node (a) to the second node (b). The storage circuit (150) stores a voltage difference between the first node (a) and the second node (b), so as to control the voltages of the first node (a) and the second node (b). The output circuit (160) reads, under the control of a read signal, the voltage of the second node (b). Further disclosed are a method for detecting light intensity and a display device.

DING XIAOLIANG (CN)
WANG HAISHENG (CN)
LIU YINGMING (CN)
CAO XUEYOU (CN)
HAN YANLING (CN)
ZHANG PING (CN)

PCT/CN2018/094000

February 21, 2019

July 02, 2018

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BOE TECHNOLOGY GROUP CO LTD (CN)

G01J1/42; G09G5/10; G06V40/13

CN107314813A	2017-11-03
CN1945240A	2007-04-11
CN1689316A	2005-10-26
CN106898636A	2017-06-27

ZHONGZI LAW OFFICE (CN)

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