公开(公告)号：US20210134222A1

公开(公告)日：2021-05-06

申请号：US16613293

申请日：2019-03-06

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Wei LIU ,  Changfeng LI

IPC: G09G3/3258

Abstract: A pixel circuit includes a driving sub-circuit and a photosensitive detection circuit. The driving sub-circuit is coupled to a self-luminescent device. The driving sub-circuit is configured to drive the self-luminescent device to emit light. The photosensitive detection circuit is configured to detect a luminance of the self-luminescent device, and transmit an electrical signal for characterizing the luminance of the self-luminescent device to a signal readout terminal.

公开(公告)号：US20210088821A1

公开(公告)日：2021-03-25

申请号：US15777412

申请日：2017-09-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Rui XU ,  Wei LIU ,  Pengpeng WANG

IPC: G02F1/1333 ,  G06K9/00 ,  G02F1/1335 ,  G02F1/1343

Abstract: A fingerprint identification display device, includes: a display panel having a plurality of display units defined therein, and at least some of the plurality of display units are located in a fingerprint identification region, each of which comprises display subpixels and an identification subpixel; a light guide plate; one or more light emitting components configured to make detection light emitted therefrom travel in the light guide plate in a total reflection manner; a first polarizer comprising a first region and a second region with perpendicular polarization directions, and a second polarizer comprising a third region and a fourth region with perpendicular polarization directions, wherein the first region and the third region correspond to the display subpixels and have perpendicular polarization directions, and the second region and the fourth region correspond to the identification subpixel; and a photosensitive sensing unit disposed at the second polarizer, and corresponding to the identification subpixel.

公开(公告)号：US20200285343A1

公开(公告)日：2020-09-10

申请号：US16060886

申请日：2017-11-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Wei LIU ,  Chih-Jen CHENG ,  Pengpeng WANG ,  Xueyou CAO ,  Ping ZHANG ,  Chun-Wei WU

IPC: G06F3/042 ,  G06F3/041 ,  H01L27/32

Abstract: The present disclosure provides an optical touch device and a manufacturing method thereof, a display and an electronic device, wherein the optical touch device comprises: a pixel array (11) that comprises a plurality of pixel sub-circuits (101) each of which comprises M first pixels (1011) and N second pixels (1012), wherein detection rays with a preset frequency are emitted by the second pixels (1012), where M and N are positive integers; a light receiving array (12) that comprises a plurality of light receivers (121) corresponding, at a one-to-one basis, to the plurality of pixel sub-circuits (101), wherein each of the light receivers (121) generates an sensing signal by receiving reflected rays of the detection rays emitted by a corresponding second pixel (1012); and a detection circuit (13) connected with the plurality of light receivers (121), wherein the detection circuit (13) performs touch positioning according to the sensing signal generated by each of the light receivers (121), thereby realizing integration of display and optical touch, to attain a higher integration level.

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：US20200058680A1

公开(公告)日：2020-02-20

申请号：US16610261

申请日：2019-04-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei LIU

IPC: H01L27/12 ,  H01L27/144

Abstract: Provided are an array substrate, a manufacturing method therefor, a display panel and a display device. The array substrate includes: a photosensitive member and a thin film transistor that are located on a base substrate, the photosensitive member including a photosensitive layer; the thin film transistor is located at a side of the photosensitive member that is far from the base substrate. In the described array substrate, the photosensitive member is formed first, and then the thin film transistor is formed on the photosensitive member, which prevents the element hydrogen from influencing the thin film transistor when forming the photosensitive member, while source and drain layer patterns of the thin film transistor may be formed by means of one-time pattern processing, thus simplifying the manufacturing process.

公开(公告)号：US20200035754A1

公开(公告)日：2020-01-30

申请号：US16453096

申请日：2019-06-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei LI ,  Wei LIU ,  Dini XIE

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/52

Abstract: The present disclosure provides an OLED display substrate including a substrate, a pixel defining layer on the substrate, for defining a plurality of sub-pixel regions having different colors; and cavity length adjusting layers in the sub-pixel regions, wherein the cavity length adjusting layers comprise a conductive ink, and the cavity length adjusting layers have different thicknesses in the sub-pixel regions having different colors.

公开(公告)号：US20190355302A1

公开(公告)日：2019-11-21

申请号：US16072878

申请日：2017-11-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Chunwei WU ,  ChihJen CHENG ,  Pengpeng WANG ,  Wei LIU

IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/146

Abstract: Aspects of the present disclosure provide a pixel circuit, a method for driving the same, and a display apparatus. The pixel circuit comprises a display driving circuit. The display driving circuit comprises a reset sub-circuit, a writing sub-circuit, a driving sub-circuit, a light-emitting control sub-circuit, and a light-emitting device. The reset sub-circuit is configured to reset the driving sub-circuit. The writing sub-circuit is configured to write a data voltage into the driving sub-circuit. The light-emitting control sub-circuit is connected to the driving sub-circuit and an anode of the light-emitting device and is configured to provide driving current, through the driving sub-circuit, for causing the light-emitting device to emit light. The pixel circuit further comprises a detection circuit configured to collect incident light and output a collection result to the read signal line. One or more transistors are shared between the detection circuit and the display driving circuit.

公开(公告)号：US20190354232A1

公开(公告)日：2019-11-21

申请号：US16094658

申请日：2018-03-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Chun Wei WU ,  Yingming LIU ,  Shenji YANG ,  Pengcheng LU ,  Pengpeng WANG ,  Xueyou CAO ,  Wei LIU

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch readout circuit, a touch display panel and a display device are disclosed, the touch readout circuit includes a first gating circuit, configured to control a first current signal at a first electrode of the light-emitting component; a current mirror circuit, configured to provide the first current signal and a second current signal to a signal processing circuit, a current direction of the second current signal being opposite to a current direction of the first current signal; and a signal processing circuit, configured to: receive the first current signal, the second current signal and a touch scan signal, filter the second current signal to obtain a third current signal, provide a touch readout signal to an output end of the touch readout circuit according to the third current signal, the first current signal and the touch scan 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.