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公开(公告)号：US20220278291A1
公开(公告)日：2022-09-01
申请号：US17635993
申请日：2021-02-02
Inventor： Aidi ZHANG , Yichi ZHANG , Jinglu BAI
Abstract: Provided are a display panel and a manufacturing method therefor, and a display apparatus. The display panel includes a plurality of sub-pixels of at least two colors and further comprises: a base substrate; a first electrode on the base substrate; an electron transport layer at the side of the first electrode facing away from the base substrate; a quantum dot light-emitting layer at the side of the electron transport layer facing away from the base substrate; and a second electrode at the side of the quantum dot light-emitting layer facing away from the base substrate. Materials of the quantum dot light-emitting layer of the sub-pixels of different colors are different. The electron transport layer is of an alloy heterostructure at least composed of a metal oxide and a metal chalcogenide. Contents of the metal chalcogenide in the alloy heterostructure at positions of the sub-pixels of different colors are different.
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公开(公告)号：US20220165975A1
公开(公告)日：2022-05-26
申请号：US17427582
申请日：2020-09-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Wenhai MEI , Yichi ZHANG
Abstract: A light-emitting device includes: a first electrode and a second electrode that are superposed; an emitting layer (EML) located between the first electrode and the second electrode; and an electron transport layer (ETL) located between the first electrode and the EML. The ETL includes a first surface proximate to the EML and a second surface proximate to the first electrode, oxygen vacancies is formed in the ETL, and a concentration of oxygen vacancies in the ETL gradually increases from the second surface to the first surface.
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公开(公告)号：US20220141580A1
公开(公告)日：2022-05-05
申请号：US17259245
申请日：2020-03-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yongchun TAO , Yichi ZHANG , Jingwen GUO
Abstract: An embodiment of the present disclosure provides a method for driving an acoustic transducer, including: obtaining a reference electrical signal according to a first electrical signal output by a first acoustic transducer element in a case where sound waves are not received by the first acoustic transducer element; obtaining an actual detected electrical signal according to a second electrical signal output by a second acoustic transducer element in a case where sound waves are received by the second acoustic transducer element; and performing a noise reduction process on the actual detected electrical signal according to the reference electrical signal to obtain a noise-reduced signal as a final output electrical signal of the second acoustic transducer element in a case where sound waves are received by the second acoustic transducer element. An embodiment of the present disclosure further provides an acoustic transducer.
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公开(公告)号：US20220141565A1
公开(公告)日：2022-05-05
申请号：US17259241
申请日：2020-03-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yongchun TAO , Yichi ZHANG
Abstract: The present disclosure provides an acoustic transducer, including: a base substrate and a plurality of acoustic transducer elements located on the base substrate. The acoustic transducer element includes: a switch and an acoustic transducer unit. A first terminal of the switch is electrically connected to a control signal line, and a second terminal of the switch is electrically connected to the acoustic transducer unit located in the same acoustic transducer element as the switch. The switch is configured to control connection and disconnection between the acoustic transducer unit located in the same acoustic transducer element as the switch and the control signal line. An embodiment of the present disclosure further provides a method for manufacturing the acoustic transducer.
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