公开(公告)号：US20200259469A9

公开(公告)日：2020-08-13

申请号：US16332246

申请日：2018-05-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Xueyou CAO ,  Ping ZHANG ,  Yanling HAN

IPC: H03F3/08 ,  G06K9/00

Abstract: Embodiments of the present disclosure provide a current amplification circuitry and a driving method thereof, and a fingerprint detection device. The current amplification circuitry includes a voltage control circuit, a plurality of first current amplification circuits, and a second current amplification circuit. The voltage control circuit provides a voltage control signal to the plurality of first current amplification circuits. The first current amplification circuit includes a current mirror, and the current mirror is coupled to a voltage input terminal, the voltage control circuit, and a first input terminal of the second current amplification circuit. The first current amplification circuit amplifies a current from the voltage input terminal according to the voltage control signal provided by the voltage control circuit, and provides the amplified current to the second current amplification circuit. The second current amplification circuit is coupled to the voltage input terminal via a second input terminal and amplifies the amplified current.

公开(公告)号：US20200175245A1

公开(公告)日：2020-06-04

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

IPC: G06K9/00 ,  H04N5/378

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.

公开(公告)号：US20190250031A1

公开(公告)日：2019-08-15

申请号：US16341498

申请日：2018-07-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Xueyou CAO ,  Yanling HAN ,  Ping ZHANG

IPC: G01J1/46

Abstract: Embodiments of the present disclosure provide a device and a method for detecting a light intensity. The device includes a photosensor, an input circuit, an amplification circuit, a feedback circuit, a storage circuit, and an output circuit. The photosensor is coupled to a first voltage signal terminal and a first node. The input circuit provides a first voltage signal to the first node according to an input signal. The amplification circuit provides, to a second node, a second voltage signal from a second voltage signal terminal according to the voltage of the first node. The feedback circuit couples the first node to the second node according to a reset signal. The storage circuit stores a voltage difference between the first node and the second node. The output circuit reads the voltage of the second node according to a read signal.

公开(公告)号：US20190237480A1

公开(公告)日：2019-08-01

申请号：US16218793

申请日：2018-12-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chih Jen CHENG ,  Pengpeng WANG ,  Wei LIU ,  Xueyou CAO ,  Yanling HAN ,  Ping ZHANG ,  Xiaoliang DING

IPC: H01L27/12 ,  G09G3/32

CPC classification number: H01L27/124 ,  G09G3/32 ,  G09G2300/0426 ,  G09G2300/0439 ,  G09G2310/0294

Abstract: An array substrate includes: a plurality of pixel units arranged in an array, selection lines, a reset circuit and readout circuits. Second terminals of transistors in pixel units belonging to a same column are connected to at least two of the read lines, so that a part of the pixel units are connected to a same read line, and another part of the pixel units are connected to the other one of the at least two of the read lines. For each column of the pixel units, each of the read lines is connected to one of the readout circuits corresponding to the column of the pixel units through a switching element; and for each column of the pixel units, each of the read lines is connected to the reset circuit through a switching element.

公开(公告)号：US20190213432A1

公开(公告)日：2019-07-11

申请号：US16131418

申请日：2018-09-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Pengpeng WANG ,  Haisheng WANG ,  Xiaoliang DING ,  Chih-Jen CHENG ,  Yanling HAN ,  Wei LIU ,  Xueyou CAO ,  Ping ZHANG

IPC: G06K9/03 ,  G06K9/00 ,  H03K17/687

CPC classification number: G06K9/036 ,  G06K9/0004 ,  G06K9/0008 ,  G06K9/0051 ,  G11C27/02 ,  H03K17/6871 ,  H03M1/12

Abstract: The disclosure discloses a noise detection circuit, a noise detection method, and a print recognition apparatus, where the noise detection circuit includes a differential amplifier, an analog-to-digital converter, a control circuit, and a first switch circuit; the control circuit is configured to control the first switch circuit to make the first input signal terminal connected with the reference signal terminal or grounded, and to make the second input signal terminal connected with the reference signal terminal or grounded, and when the first input signal terminal is connected with the reference signal terminal or grounded, and the second input signal terminal is connected with the reference signal terminal or grounded, to analyze the digital signal output by the analog-to-digital converter to determine a source of noise of the print recognition apparatus.

公开(公告)号：US20190212820A1

公开(公告)日：2019-07-11

申请号：US16099109

申请日：2018-03-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yanling HAN ,  Xue DONG ,  Jing LV ,  Haisheng WANG ,  Chunwei WU ,  Xiaoliang DING ,  Pengpeng WANG ,  Xueyou CAO ,  ChihJen CHENG ,  Wei LIU ,  Ping ZHANG

IPC: G06F3/01 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/016 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/044

Abstract: The present disclosure discloses a drive method for driving a touch apparatus. The touch apparatus includes a plurality of touch electrodes. In the drive method, a touch detection signal is applied to the plurality of touch electrodes within a first time interval. A tactile feedback signal is applied to the plurality of touch electrodes within a second time interval. The first time interval and the second time interval are alternated but not overlapped. The present disclosure further discloses a touch apparatus and a touch display apparatus.

公开(公告)号：US20190205592A1

公开(公告)日：2019-07-04

申请号：US16042492

申请日：2018-07-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou CAO ,  Haisheng WANG ,  Xiaoliang DING ,  Chih Jen CHENG ,  Yanling HAN ,  Pengpeng WANG ,  Wei LIU ,  Ping ZHANG ,  Xue DONG ,  Jing LV

IPC: G06K9/00

Abstract: A recognition device, a fingerprint recognition device and a fingerprint recognition apparatus are provided, and the fingerprint recognition device includes: a detection substrate provided with fingerprint detector units; a light barrier which is provided at a side, provided with the fingerprint detector units, of the detection substrate, and provided with light through holes corresponding to the fingerprint detector units; a cover plate which is provided at a side, facing away from the detection substrate, of the light barrier, and includes a light exit surface facing the light barrier and a touch surface facing away from the light barrier; and a light source for emitting light to the cover plate. Each fingerprint detector unit is configured to output an electrical signal according to an intensity of light incident on the fingerprint detector unit, after the light passes through the light through hole corresponding to the fingerprint detector unit.

公开(公告)号：US20190097076A1

公开(公告)日：2019-03-28

申请号：US15971543

申请日：2018-05-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou CAO ,  Xue DONG ,  Haisheng WANG ,  Xiaoliang DING ,  Yingming LIU ,  Yanling HAN ,  Yuzhen GUO ,  Pengpeng WANG ,  Chihjen CHENG ,  Ping ZHANG ,  Wei LIU ,  Likai DENG ,  Yangbing LI

IPC: H01L31/112 ,  B81B1/00 ,  B01L3/00

CPC classification number: H01L31/1126 ,  B01L3/5027 ,  B01L3/502715 ,  B01L3/502792 ,  B01L2200/02 ,  B01L2200/0673 ,  B01L2300/0645 ,  B01L2300/0654 ,  B01L2300/0887 ,  B01L2300/165 ,  B01L2400/0427 ,  B81B1/00 ,  B81B2201/058 ,  G01N27/44721 ,  G09G3/344 ,  H01L27/3227 ,  H01L31/112

Abstract: A microfluidic system includes a liquid drop accommodation space, an array of photosensitivity detection circuits and an array of driving circuits between an upper substrate and a lower substrate. Each photosensitivity detection circuit includes a photosensitive transistor and a first gating transistor. The photosensitive transistor has a gate electrode coupled to a first scan signal line, a source electrode coupled to a first power supply voltage signal line, and a drain electrode coupled to a source electrode of the first gating transistor. The first gating transistor has a gate electrode coupled to a second scan signal line, and a drain electrode coupled to a read signal line. Each driving circuit includes a driving transistor and a driving electrode. The driving transistor has a gate electrode coupled to a third scan signal line, a source electrode coupled to a data signal line, and a drain electrode coupled to the driving electrode.

公开(公告)号：US20190042043A1

公开(公告)日：2019-02-07

申请号：US15918325

申请日：2018-03-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengpeng WANG ,  Haisheng WANG ,  Xiaoliang DING ,  Chih Jen CHENG ,  Yanling HAN ,  Ping ZHANG ,  Xueyou CAO ,  Wei LIU ,  Yuzhen GUO

IPC: G06F3/041 ,  G06F3/044

Abstract: A pressure sensing detection circuit and a driving method thereof, an electronic device. The pressure sensing detection circuit includes: an excitation signal circuit, configured to output an alternating current voltage signal; a pressure sensing circuit, configured to sense a magnitude of an external pressure and output a detection voltage signal under excitation of the alternating current voltage signal; and a phase detection circuit, configured to detect a phase change value of the detection voltage signal and convert the phase change value into a voltage value.

公开(公告)号：US20180357464A1

公开(公告)日：2018-12-13

申请号：US15573228

申请日：2017-06-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengpeng WANG ,  Xue DONG ,  Jing LV ,  Haisheng WANG ,  Chunwei WU ,  Xiaoliang DING ,  Yingming LIU ,  Wei LIU ,  Yanling HAN ,  Xueyou CAO ,  Ping ZHANG ,  Changfeng LI ,  Lijun ZHAO ,  Rui XU

IPC: G06K9/00 ,  H01L27/32

CPC classification number: G06K9/0051 ,  G06K9/00 ,  G06K9/0004 ,  G06K9/20 ,  G09G3/3208 ,  G09G2310/08 ,  H01L27/14678 ,  H01L27/3234

Abstract: An identity recognition device, and an substrate and an identity recognition circuit are disclosed. In the substrate, a plurality of second recognition output lines are added to be arranged in pairs with first recognition output lines. A control signal loaded to the control signal line will be coupled to the first and second recognition output lines by the parasitic capacitance between the control signal line and the recognition output lines to cause similar signal interference to the first and second recognition output lines. During the identity recognition time period, the signal interference in the electric signal outputted by the first recognition output line can be removed by utilizing the similar noise signal received by the second recognition output line, in such a way to improve the signal-to-noise ratio and detection precision of the identity recognition signal.