公开(公告)号：US20200251537A1

公开(公告)日：2020-08-06

申请号：US16652039

申请日：2019-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Guoying WANG ,  Zhen SONG ,  Yicheng LIN ,  Ling WANG ,  Cuili GAI ,  Pan XU

IPC: H01L27/32 ,  H01L27/12 ,  H01L51/56 ,  H01L51/52

Abstract: The present disclosure provides an optical sensor, a manufacturing method thereof, a display device, and a display apparatus, and relates to the display technology. The optical sensor includes a thin film transistor and a PIN diode on a surface of a drain of the thin film transistor. A material of a P region of the PIN diode, a material of an I region of the PIN diode, and a material of an N region of the PIN diode are oxides. Since the PIN diode is made of oxides rather than amorphous silicon, hydrogen is not introduced. Therefore, the performance of the thin film transistor will not be affected, thereby achieving the improvement of the performance of the display device and the display effect.

公开(公告)号：US20200161402A1

公开(公告)日：2020-05-21

申请号：US16619446

申请日：2019-05-21

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ling WANG ,  Yicheng LIN ,  Cuili GAI ,  Pan XU

IPC: H01L27/32 ,  H01L29/786 ,  H01L29/417 ,  H01L23/522 ,  H01L27/12 ,  H01L29/66

Abstract: A thin film transistor includes: a substrate base; a first gate electrode at a side of the substrate base; an active layer at a side of the first gate electrode away from the substrate base; a second gate electrode at a side of the active layer away from the substrate base; and a source/drain electrode at a side of the second gate electrode away from the substrate base. An orthographic projection of the source/drain electrode on the substrate base is at least partially overlapped with an orthographic projection of the second gate electrode on the substrate base.

公开(公告)号：US20200058253A1

公开(公告)日：2020-02-20

申请号：US16413645

申请日：2019-05-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yicheng LIN ,  Pan XU ,  Guang YAN ,  Dongfang YANG

IPC: G09G3/3258 ,  H01L27/32 ,  H05B33/08

Abstract: A pixel circuit comprising an organic light emitting diode; a driving transistor including a gate, a source connected to a first node, a drain connected to a second power supply terminal; and a photosensitive circuit connected between a second node and a third node, the second node configured to receive a reference voltage. The driving transistor is configured to, responsive to a gate voltage and a source voltage, control a magnitude of a driving current flowing through the organic light emitting diode. The photosensitive circuit is configured to sense an intensity of light emission of the organic light emitting diode and to set a potential at the third node according to the reference voltage and the intensity that was sensed, the potential that was set being detectable by an external circuit via a sense line.

公开(公告)号：US20190180687A1

公开(公告)日：2019-06-13

申请号：US16022756

申请日：2018-06-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili GAI ,  Yi Cheng LIN ,  Ling WANG ,  Baoxia ZHANG ,  Pan XU

IPC: G09G3/3258 ,  G09G3/3233

Abstract: The present disclosure provides an OLED pixel driving circuit, a driving method thereof and a display device including the same. The OLED pixel driving circuit includes: a first transistor, providing driving current to an organic light emitting diode, and comprising a first terminal, second terminal and control terminal coupled to a first node, second node and third node respectively; a power switch unit, coupled between a power supply voltage and the second node; a first switch unit, coupled between a data line and a fourth node to couple a data voltage signal from the data line to the fourth node; a second switch unit, coupled between the third node and the second node to enable the first transistor connected as a diode; a first capacitor, coupled between the fourth node and the first node; and a second capacitor, coupled between the fourth node and the second node.

公开(公告)号：US20190051243A1

公开(公告)日：2019-02-14

申请号：US15570928

申请日：2017-05-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Quanhu LI ,  Yongqian LI ,  Pan XU ,  Yu WANG ,  Song MENG ,  Fei YANG ,  Baoxia ZHANG ,  Cuili GAI ,  Ling WANG ,  Yicheng LIN ,  Kun CAO ,  Longyan WANG ,  Yue WU

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/20 ,  G09G3/3275 ,  H01L27/32

Abstract: A pixel driving circuit, a pixel driving method, an array substrate, a display device, and a display panel are disclosed. The pixel driving circuit includes a switching subcircuit, a plurality of clock signal lines, a data writing subcircuit and a driving subcircuit.

公开(公告)号：US20180314283A1

公开(公告)日：2018-11-01

申请号：US15852330

申请日：2017-12-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO, LTD.

Inventor： Xuehuan FENG ,  Pan XU ,  Yongqian LI ,  Zhongyuan WU

IPC: G05F1/575 ,  G05F1/56 ,  H03K5/1534 ,  H03K5/24 ,  H03K21/02 ,  G05F1/563

CPC classification number: G05F1/575 ,  G05F1/561 ,  G05F1/563 ,  H03K5/1534 ,  H03K5/2481 ,  H03K21/026

Abstract: The present invention provides a digital low dropout regulator and a control method thereof. The regulator comprises a voltage comparator, a counter, a decoder, a PMOSFET array and a divider. The voltage comparator receives an actual voltage output from the PMOSFET array through the positive input terminal, receives a reference voltage through the negative input terminal, and compares the actual voltage and the reference voltage to obtain a level signal. The divider calculates based on an output voltage pre-configured for a PMOSFET array and an actual voltage output by the PMOSFET array in at least two clock cycles to obtain a first value. The counter generates a control signal based on the level signal and the first value. The decoder receives the control signal transmitted by the counter and controlling the number of switched-on transistors, in the PMOSFET on a basis of the control signal.

公开(公告)号：US20180005556A1

公开(公告)日：2018-01-04

申请号：US15540752

申请日：2016-11-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pan XU ,  Guangcai YUAN ,  Yongqian LI ,  Dongxu HAN

IPC: G09G3/00 ,  G09G3/3225

CPC classification number: G09G3/006 ,  G09G3/00 ,  G09G3/3225 ,  G09G2310/08 ,  G09G2330/02 ,  G09G2330/10

Abstract: A test method of a display panel and a test device are disclosed. The test method includes outputting a data signal of a preset test image to the display panel to cause plural light emitting elements to emit light according to the preset test image; outputting a starting signal to a scan circuit in the display panel to cause the scan circuit to output an active level of a switching circuit to the plural rows of first scan lines as connected, successively, according to a preset timing sequence; receiving a sensing signal from a sensor circuit, including voltage value information of a first terminal of every light emitting element; comparing the voltage value information of the first terminal of every light emitting element with the preset test image to obtain a test result. The test method solves the problem of missing detection of Mura.

公开(公告)号：US20170140707A1

公开(公告)日：2017-05-18

申请号：US15322471

申请日：2016-03-21

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Pan XU ,  Zhongyuan WU ,  Yuting ZHANG ,  Yongqian LI

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0289 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2330/028

Abstract: A pixel driving circuit, a pixel driving method and a display apparatus are provided. The pixel driving circuit includes a reset unit, a threshold compensation unit, a data writing unit, a drive transistor, a first storage capacitor and a light emitting device. According to the present disclosure, it is able to make the drive current generated by the drive transistor only related to the data voltage and the reference voltage but uncorrelated to the threshold voltage of the drive transistor when the drive transistor drives the light emitting device to display.

公开(公告)号：US20250024716A1

公开(公告)日：2025-01-16

申请号：US18279650

申请日：2022-05-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Ying HAN ,  Pan XU ,  Xing ZHANG ,  Chengyuan LUO ,  Donghui ZHAO

IPC: H10K59/131 ,  H10K59/12 ,  H10K59/122 ,  H10K59/80 ,  H10K71/60

Abstract: A display panel, a manufacturing method thereof, and a display device are provided. The display panel includes: a base substrate; a conductive connection member including a separation structure; a light-emitting functional layer, located on a side of the conductive connection member facing away from the base substrate, and disconnected at the separation structure; a first electrode, located on a side of the light-emitting functional layer facing away from the base substrate, and an auxiliary electrode located on a side of the conductive connection member close to the base substrate; the first electrode is connected with the conductive connection member at the separation structure, the first electrode is connected with the auxiliary electrode through the conductive connection member, and the separation structure includes a groove, and an angle between an orientation of the groove and the base substrate is an acute angle.

公开(公告)号：US20240334763A1

公开(公告)日：2024-10-03

申请号：US17927051

申请日：2021-10-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xing ZHANG ,  Pan XU ,  Dacheng ZHANG ,  Ying HAN ,  Guoying WANG ,  Yi CHEN

IPC: H10K59/131 ,  G09G3/3266 ,  H10K59/122 ,  H10K59/80 ,  H10K59/88

CPC classification number: H10K59/131 ,  G09G3/3266 ,  H10K59/122 ,  H10K59/8722 ,  H10K59/873 ,  H10K59/8792 ,  H10K59/88 ,  G09G2310/08

Abstract: A display panel and a display device are provided, the display panel has a display region, a dummy pixel region and a circuit region, the display region a planarization layer and an encapsulation layer. The circuit region includes a plurality of wires and a frame sealant. The frame sealant overlaps with at least a part of the wires, the encapsulation layer overlaps with at least a part of the frame sealant. The planarization layer includes at least one groove in the circuit region, and overlapping with at least a part of the wires. A first side and a second side of the display region include a binding region, and at least one first chip-on-film in the first binding region on the first side and at least one second chip-on-film in the second binding region on the second side are centrosymmetric with respect to a center of the display region.