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公开(公告)号：US11334194B2
公开(公告)日：2022-05-17
申请号：US16647909
申请日：2019-07-25
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xiaoliang Ding , Xue Dong , Haisheng Wang , Yingming Liu , Wei Liu , Bo Chen , Xueyou Cao , Pengpeng Wang , Ping Zhang , Likai Deng
Abstract: A light detection circuit, an electronic device, and an optical recognition method are provided. The light detection circuit includes a charge storage sub-circuit (10), a photoelectric conversion sub-circuit (30), a signal collection sub-circuit (40), and a potential pull-up sub-circuit (50). When a potential of a reading node (A) is decreased by a preset value, the potential pull-up sub-circuit (50) changes the potential of the reading node (A) to an initial potential. A photoelectric diode may continuously generate a light current under the action of light, so that the potential of the reading node (A) is decreased again. Even when the intensity of ambient light is high, a touch can be accurately recognized in an optical touch recognition circuit, and ridge lines and valley lines can be accurately recognized in an optical fingerprint recognition circuit.
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公开(公告)号：US10942600B2
公开(公告)日：2021-03-09
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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Patent Agency Ranking
公开(公告)号：US11308727B2
公开(公告)日：2022-04-19
申请号：US16622557
申请日：2019-05-30
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Xiaoliang Ding , Xue Dong , Haisheng Wang , Yingming Liu , Wei Liu , Jiabin Wang , Yangbing Li , Pengpeng Wang , Ping Zhang , Likai Deng , Bo Chen
Abstract: The present disclosure provides a fingerprint detection device and method. The fingerprint detection device includes a detection substrate and a signal converter. The detection substrate includes pixels arranged in rows and columns. Each pixel includes a sensing circuit configured to receive an optical signal and output a sensing electrical signal according to the received optical signal. The signal converter includes A/D converters each coupled to one column of sensing circuits. The fingerprint detection device further includes a control circuit coupled to the sensing circuits and the A/D converters and configured to obtain common mode component of sensing electrical signals output by sensing circuits of at least part of the pixels and provide information about the common mode component to the A/D converters. The A/D converter is configured to perform analog-to-digital conversion on difference between the sensing electrical signal from corresponding sensing circuit and the common mode signal.
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公开(公告)号：US10929638B2
公开(公告)日：2021-02-23
申请号：US16383846
申请日：2019-04-15
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xueyou Cao , Haisheng Wang , Xiaoliang Ding , Lei Wang , Wei Liu , Yanling Han , Bo Chen , Pengpeng Wang , Ping Zhang , Chihjen Cheng , Likai Deng
IPC: G06K9/00 , G06F3/041 , G06F3/042 , G09G3/3291 , H01L27/32
Abstract: The disclosure discloses a display panel, a method for driving the same, and a display device, where the display panel includes a plurality of detection circuits arranged in an array, each detection circuit includes a control component, and a plurality of photosensitive recognition components arranged in an array; the control component is configured to obtain electric signals provided by the plurality of photosensitive recognition components, to process and then output, in a process of recognizing a fingerprint, the electric signals provided by the plurality of photosensitive recognition components separately, and to superimpose, in a process of detecting a touch, the electric signals provided by the plurality of photosensitive recognition components, and to process and output an electric signal resulting from the superimposition.
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5.发明授权公开(公告)号：US11507228B2
公开(公告)日：2022-11-22
申请号：US16605204
申请日：2019-05-13
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xiaoliang Ding , Haisheng Wang , Yingming Liu , Bo Chen , Yanling Han
Abstract: Embodiments of the present application provide acoustic wave signal reading apparatuses, acoustic wave signal reading circuits, and control methods thereof related to the field of acoustic wave signal reading technology. One embodiment of an acoustic wave signal reading circuit comprises: an acoustic wave receiver, a reset control circuit, a function circuit, and an output circuit; an acoustic wave receiver is configured to convert a received acoustic wave signal into an electrical signal and outputs the electrical signal to a first node; the reset control circuit outputs a voltage to the first node; the function circuit switches states based on the first node, a signal terminal, and a voltage terminal, and outputs a voltage to a second node to reset the second node or amplifies a potential of the first node and outputs to the amplified potential to the second node depending on a state of the function circuit.
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公开(公告)号：US20200225806A1
公开(公告)日：2020-07-16
申请号：US16647909
申请日：2019-07-25
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xiaoliang Ding , Xue Dong , Haisheng Wang , Yingming Liu , Wei Liu , Bo Chen , Xueyou Cao , Pengpeng Wang , Ping Zhang , Likai Deng
Abstract: A light detection circuit, an electronic device, and an optical recognition method are provided. The light detection circuit includes a charge storage sub-circuit (10), a photoelectric conversion sub-circuit (30), a signal collection sub-circuit (40), and a potential pull-up sub-circuit (50). When a potential of a reading node (A) is decreased by a preset value, the potential pull-up sub-circuit (50) changes the potential of the reading node (A) to an initial potential. A photoelectric diode may continuously generate a light current under the action of light, so that the potential of the reading node (A) is decreased again. Even when the intensity of ambient light is high, a touch can be accurately recognized in an optical touch recognition circuit, and ridge lines and valley lines can be accurately recognized in an optical fingerprint recognition circuit.
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公开(公告)号：US20200042764A1
公开(公告)日：2020-02-06
申请号：US16383846
申请日：2019-04-15
Applicant: BOE Technology Group Co., Ltd.
Inventor： Xueyou Cao , Haisheng Wang , Xiaoliang Ding , Lei Wang , Wei Liu , Yanling Han , Bo Chen , Pengpeng Wang , Ping Zhang , Chihjen Cheng , Likai Deng
IPC: G06K9/00 , G06F3/042 , G06F3/041 , H01L27/32 , G09G3/3291
Abstract: The disclosure discloses a display panel, a method for driving the same, and a display device, where the display panel includes a plurality of detection circuits arranged in an array, each detection circuit includes a control component, and a plurality of photosensitive recognition components arranged in an array; the control component is configured to obtain electric signals provided by the plurality of photosensitive recognition components, to process and then output, in a process of recognizing a fingerprint, the electric signals provided by the plurality of photosensitive recognition components separately, and to superimpose, in a process of detecting a touch, the electric signals provided by the plurality of photosensitive recognition components, and to process and output an electric signal resulting from the superimposition.
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