公开(公告)号：US11455820B2

公开(公告)日：2022-09-27

申请号：US17054845

申请日：2019-12-06

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiaoliang Ding ,  Haisheng Wang ,  Yingming Liu ,  Pengpeng Wang ,  Likai Deng

IPC: G06K9/28 ,  G06V40/13 ,  G06V40/12

Abstract: There is provided an ultrasonic fingerprint identification component, including an ultrasonic fingerprint identification circuit, which includes a detection circuit and a source follower circuit, and a current supply circuit, where an output terminal of the source follower circuit is coupled to the current supply circuit through a signal reading line; the current supply circuit is configured to provide a constant current to the output terminal of the source follower circuit during an operation of the ultrasonic fingerprint identification circuit; the detection circuit is coupled to a receiving electrode of an ultrasonic sensor and is configured to output a sensing voltage to a sampling node according to an electric signal output by the receiving electrode of the ultrasonic sensor; and the source follower circuit is configured to output a corresponding source follower voltage to the signal reading line according to the sensing voltage under control of the constant current.

公开(公告)号：US11373563B2

公开(公告)日：2022-06-28

申请号：US16084703

申请日：2018-01-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chih Jen Cheng ,  Xiaoliang Ding ,  Pengpeng Wang ,  Wei Liu ,  Yanling Han ,  Xueyou Cao ,  Ping Zhang

IPC: G09G3/00

Abstract: An anti-noise signal modulation circuit, a modulation method, a display panel and a display device are disclosed. The anti-noise signal modulation circuit includes a frequency-modulation control sub-circuit. An input end of the frequency modulation control sub-circuit is configured to receive an initial signal, and an output end of the frequency-modulation control sub-circuit is connected to a signal processing circuit that is preset; the frequency-modulation control sub-circuit is configured to frequency-modulate the initial signal by a switch signal that hops according to a preset period, and to output a modulation result to the signal processing circuit; and a frequency corresponding to the switch signal does not overlap with a noise frequency.

公开(公告)号：US11328148B2

公开(公告)日：2022-05-10

申请号：US16304177

申请日：2018-01-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengpeng Wang ,  Xue Dong ,  Haisheng Wang ,  Xiaoliang Ding ,  Chihjen Cheng ,  Yanling Han ,  Wei Liu ,  Xueyou Cao ,  Rui Xu ,  Yuzhen Guo ,  Ping Zhang

IPC: G06K9/00 ,  G06F3/044 ,  G06F3/041 ,  H01L27/32

Abstract: The present disclosure provides a touch panel, a fingerprint recognition method thereof, a method for manufacturing a touch panel and a display device. The touch panel includes multiple driving electrode groups and multiple, sensing electrodes which are intersected with and insulated from each other, each of the driving electrode groups comprises a plurality of driving electrodes, each driving electrodes is coupled to a scanning line, and the method includes: a first scanning step of performing a first scanning on each of the driving electrode groups by using scanning lines to detect a sensing signal generated by a sensing electrode being touched; a determining step of determining a driving electrode group being touched according to the detected sensing signal; a second scanning step of sequentially performing a second scanning on the driving electrodes in the determined driving electrode group being touched to obtain a valley or a ridge of a fingerprint.

公开(公告)号：US11250237B2

公开(公告)日：2022-02-15

申请号：US16861576

申请日：2020-04-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xueyou Cao ,  Pengpeng Wang ,  Wenjuan Wang ,  Xiaoliang Ding ,  Haisheng Wang ,  Ping Zhang

IPC: G06K9/00 ,  H03K17/687

Abstract: The present disclosure relates to a circuit for fingerprint identification and a driving method thereof, a display panel, and a display device. The circuit for fingerprint identification of the present disclosure includes a voltage adjustment circuit, a photodiode, and a signal output circuit; wherein the voltage adjustment circuit is electrically connected with an anode of the photodiode, and the signal output circuit is electrically connected with a cathode of the photodiode; the voltage adjustment circuit is configured to adjust an anode voltage input to the photodiode to enable the photodiode to work in a linear region; and the signal output circuit is configured to amplify and output a signal output by the photodiode.

公开(公告)号：US11232278B2

公开(公告)日：2022-01-25

申请号：US16975638

申请日：2019-10-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou Cao ,  Xiaoliang Ding ,  Haisheng Wang ,  Wenjuan Wang ,  Pengpeng Wang ,  Yapeng Li ,  Ping Zhang ,  Likai Deng

IPC: G06K9/00

Abstract: A fingerprint identification and detection circuit, a fingerprint identification and detection method and a display device are provided. The fingerprint identification and detection circuit includes a storage capacitor, a capacitor control circuit and a photoelectric conversion element; the photoelectric conversion element is configured to, when in a photoelectric conversion state, convert a received optical signal into a corresponding electrical signal; the capacitor control circuit is provided between the storage capacitor and the photoelectric conversion element, and is configured to perform control to store at least part of the electrical signal to the storage capacitor under control of a capacitor control signal.

公开(公告)号：US11086158B2

公开(公告)日：2021-08-10

申请号：US16069764

申请日：2017-12-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengpeng Wang ,  Xue Dong ,  Haisheng Wang ,  Chunwei Wu ,  Xiaoliang Ding ,  Chihjen Cheng ,  Wei Liu ,  Yanling Han ,  Xueyou Cao ,  Ping Zhang ,  Changfeng Li ,  Yanan Jia ,  Yuzhen Guo

IPC: G02F1/1333 ,  G02F1/1368 ,  G06F3/01 ,  H01Q1/24 ,  H01Q1/52

Abstract: The present disclosure provides an array substrate, comprising a substrate and a display element arranged above the substrate. The array substrate further comprises an antenna structure for transmitting and receiving electromagnetic waves. The antenna structure comprises a signal shielding layer and an antenna patch layer arranged on the substrate. The antenna patch layer and the signal shielding layer are spaced apart through a dielectric layer. The antenna patch layer is beneath the signal shielding layer such that the antenna structure transmits electromagnetic waves towards the bottom of the substrate and receives the electromagnetic waves from the bottom of the substrate. The present disclosure further provides a display panel and a man-machine interactive terminal.

公开(公告)号：US11074860B2

公开(公告)日：2021-07-27

申请号：US16609417

申请日：2019-02-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang Ding ,  Xue Dong ,  Haisheng Wang ,  Yingming Liu ,  Wei Liu ,  Changfeng Li ,  Xueyou Cao ,  Pengpeng Wang ,  Liguang Deng

IPC: G09G3/3233

Abstract: An optical signal noise reduction circuit includes a reference line, a comparison detection circuitry and a photoelectric signal read line. An electric signal on the photoelectric signal read line includes a noise electric signal and a photoelectric signal. The reference line is configured to sense the noise electric signal on the photoelectric signal read line, to generate a corresponding second electric signal. The comparison detection circuitry is connected to the reference line and the photoelectric signal read line and configured to acquire the photoelectric signal in accordance with the electric signal on the photoelectric signal read line and the electric signal on the reference line. One or more optical signal noise reduction circuits are used in a display panel. The optical signal noise reduction circuit may be utilized in an optical signal noise reduction method.

公开(公告)号：US20210216163A1

公开(公告)日：2021-07-15

申请号：US16631445

申请日：2019-02-01

Applicant: BOE Technology Group Co., Ltd.

Inventor： Pengpeng Wang ,  Haisheng Wang ,  Xiaoliang Ding ,  Yangbing Li ,  Likai Deng

IPC: G06F3/042 ,  H01L25/18 ,  H01L25/16 ,  G02F1/29 ,  G01S17/42 ,  G01S17/894 ,  G01S7/481 ,  G06T7/50

Abstract: A display apparatus for detecting three-dimensional (3D) spatial information. The display apparatus includes a display panel having plurality of active subpixels in a display area configured with multiple gaps respectively between at least some active subpixels, the display panel including a counter substrate at front and a backplane substrate at back; an optical layer at a back side of the backplane substrate; multiple light sensors attached discretely on a back side of the optical layer and substantially aligned with the multiple gaps in the display area; and a light source on the backplane substrate and configured to provide an infrared light signal in a direction toward a field of view beyond the counter substrate. The multiple light sensors are configured to detect respective infrared light signals reflected from multiple different regions of an object in the field of view for collectively deducing 3D spatial information of the object.

公开(公告)号：US10970514B2

公开(公告)日：2021-04-06

申请号：US16637025

申请日：2019-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou Cao ,  Haisheng Wang ,  Xiaoliang Ding ,  Chih Jen Cheng ,  Yanling Han ,  Wei Liu ,  Pengpeng Wang ,  Ping Zhang

IPC: G09G5/00 ,  G06F3/041 ,  G06K9/00 ,  G09G5/10

Abstract: Provided are a compensation structure and a driving method thereof, a display panel, and a display device. The compensation structure includes a photoelectric sensing circuit, a fingerprint recognition circuit and a compensation circuit. The photoelectric sensing circuit is configured to respectively generate a first electric signal and a second electric signal according to received first optical signal and second optical signal. The fingerprint recognition circuit is configured to be connected to the photoelectric sensing circuit to receive the first electric signal, and to employ the first electric signal to determine a fingerprint pattern. The compensation circuit is configured to be connected to the photoelectric sensing circuit to receive the second electric signal, and to employ the second electric signal to perform optical compensation so as to adjust the first electric signal.

公开(公告)号：US10817699B2

公开(公告)日：2020-10-27

申请号：US16316457

申请日：2018-03-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou Cao ,  Xue Dong ,  Jing Lv ,  Haisheng Wang ,  Xiaoliang Ding ,  Yingming Liu ,  Yanling Han ,  Wei Liu ,  Chunwei Wu ,  Pengpeng Wang ,  Ping Zhang

IPC: G06K9/00

Abstract: The present disclosure discloses a fingerprint recognition device, a display substrate and a display apparatus. The fingerprint recognition device includes: at least one fingerprint detection component; at least one fingerprint recognition signal line, the fingerprint detection component outputs a detection current to the fingerprint recognition signal line; at least one noise reduction circuit serially coupled in the fingerprint recognition signal line, the noise reduction circuit being a resistive component; and a fingerprint determination circuit coupled to the fingerprint recognition signal line, configured to determine a morphology of a fingerprint according to a current signal, subjected to a noise reduction by the noise reduction circuit and transmitted by the fingerprint recognition signal line. The fingerprint recognition device can filter out the current generated by coupling the fingerprint recognition signal line with other data lines, the interference with the detection current is reduced, the accuracy of the fingerprint recognition is improved.