US 11,808,625 B2
Ambient light sensor and electronic device wherein a detected signal amount of infrared light in the ambient light is configured to correct a pixel value of a pixel unit corresponding to a color light filtering unit
Songjin Zhong, Guangdong (CN)
Assigned to SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong (CN)
Filed by SHENZHEN GOODIX TECHNOLOGY CO., LTD., Guangdong (CN)
Filed on Jun. 23, 2022, as Appl. No. 17/847,391.
Application 17/847,391 is a continuation of application No. PCT/CN2021/141792, filed on Dec. 27, 2021.
Prior Publication US 2023/0204412 A1, Jun. 29, 2023
Int. Cl. G02B 5/20 (2006.01); G01J 1/42 (2006.01); G01J 1/02 (2006.01); G01J 1/04 (2006.01)
CPC G01J 1/4204 (2013.01) [G01J 1/0271 (2013.01); G01J 1/0492 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An ambient light sensor, comprising:
a light filtering unit array comprising a plurality of light filtering units, the plurality of light filtering units comprising a color light filtering unit, a white light filtering unit and a transparent light filtering unit, the white light filtering unit being configured to pass a visible light signal and block an infrared light signal, and the transparent light filtering unit being configured to pass the visible light signal and the infrared light signal;
a pixel unit array located under the light filtering unit array, the pixel unit array comprising a plurality of pixel units, and the plurality of pixel units being configured to receive a light signal after an ambient light passes through the plurality of light filtering units for an ambient light detection;
wherein a pixel unit corresponding to the white light filtering unit is configured to detect the visible light signal in ambient light, a pixel unit corresponding to the transparent light filtering unit is configured to detect the visible light signal and the infrared light signal in the ambient light, the pixel unit corresponding to the white light filtering unit and the pixel unit corresponding to the transparent light filtering unit are configured to jointly detect a signal amount of the infrared light signal in the ambient light, and the signal amount of the infrared light signal is configured to correct a pixel value of a pixel unit corresponding to the color light filtering unit.