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公开(公告)号：US20200348818A1
公开(公告)日：2020-11-05
申请号：US16552193
申请日：2019-08-27
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xiaoliang DING , Haisheng WANG , Yingming LIU , Xiaochuan CHEN , Bo CHEN , Feiteng LIU , Wenhui LI
Abstract: The present disclosure provides a sensor pixel, an ultrasonic sensor, an OLED display panel and an OLED display device, in which the sensor pixel includes a base substrate, a piezoelectric transducer and a sensor pixel circuit arranged on the base substrate; the energy sensor is connected to a first signal input terminal and the first node; the sensor pixel circuit includes a signal node control subcircuit for controlling the first node according to a signal of the reset signal terminal and a signal of the second signal input terminal, a drive subcircuit for providing a detection signal to the second node under the control of a signal of the first node, and a read subcircuit for providing a signal of the second node to the signal read line under the control of the read signal terminal.
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