US 12,010,894 B2
Display panel and display device
Tengteng Shi, Hubei (CN); Zhuo Zhang, Hubei (CN); and Guowei Zha, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 16/979,686
Filed by WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed Jul. 9, 2020, PCT No. PCT/CN2020/101002
§ 371(c)(1), (2) Date Sep. 10, 2020,
PCT Pub. No. WO2021/253529, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 202010547580.1 (CN), filed on Jun. 16, 2020.
Prior Publication US 2022/0302223 A1, Sep. 22, 2022
Int. Cl. H10K 59/60 (2023.01); G02F 1/133 (2006.01); G02F 1/1335 (2006.01); G06V 40/13 (2022.01); G09G 3/20 (2006.01); H10K 50/86 (2023.01); H10K 59/38 (2023.01)
CPC H10K 59/60 (2023.02) [G02F 1/13312 (2021.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); G06V 40/1318 (2022.01); G09G 3/20 (2013.01); H10K 50/865 (2023.02); H10K 59/38 (2023.02); G09G 2354/00 (2013.01); G09G 2360/144 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a plurality of pixel units spaced apart from each other, each of the pixel units comprising a plurality of sub-pixels spaced apart from each other; and
a plurality of photosensors, wherein from a top view, each of the photosensors is arranged at one side of the corresponding pixel unit, and the photosensors are configured to convert received light energy from an external environment and the pixel units into electrical energy;
wherein each of the photosensors comprises a first state and a second state; in the first state, each of the photosensors is configured to convert the received light energy from an external environment and the pixel units into the electrical energy; in the second state, each of the photosensors is configured to receive reflected light of a fingerprint to generate an electrical signal; and the display panel further comprises a signal reading circuit, and the signal reading circuit is configured to identify the fingerprint according to the electrical signals of the photosensors;
wherein the display panel further comprises an electrical energy collection circuit electrically connected to at least one of the photosensors for storing the electrical energy, and the electrical energy collection circuit comprises:
a charging chip electrically connected to the photosensor; and
an energy storage device, wherein the photosensor charges the energy storage device through the charging chip.