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.

公开(公告)号：US20240233650A1

公开(公告)日：2024-07-11

申请号：US17921677

申请日：2021-11-08

Applicant: Hefei BOE Joint Technology Co., Ltd. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhidong YUAN ,  Yongqian LI ,  Pan XU ,  Can YUAN

IPC: G09G3/3266 ,  G09G3/20 ,  G09G3/3233 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G09G3/2096 ,  G09G3/3233 ,  G11C19/28 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2340/00

Abstract: A light-emitting control shift register includes an input circuit, a pulse width adjustment circuit, a pull-up circuit, a pull-down control circuit and a pull-down circuit. The input circuit is configured to output a signal of a first signal input terminal. The pulse width adjustment circuit is configured to transmit the signal output from the input circuit to a pull-up node, and is further configured to output a signal of a second clock signal terminal to the pull-up node. The pull-up circuit is configured to output a voltage of a first voltage terminal to a signal output terminal. The pull-down control circuit is configured to output the voltage of the first voltage terminal, and is further configured to output a voltage of a second voltage terminal. The pull-down circuit is configured to pull down a voltage of the signal output terminal to the voltage of the second voltage terminal.

公开(公告)号：US20240203357A1

公开(公告)日：2024-06-20

申请号：US17802580

申请日：2021-04-01

Applicant: Hefei BOE Joint Technology Co.,Ltd. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xuehuan FENG ,  Yongqian LI ,  Pan XU

IPC: G09G3/3266 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G11C19/28 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/08

Abstract: A display panel has a display area and a fan-out region. The display panel includes: a substrate; a scan driving circuit including shift registers and clock signal lines, sub-pixels and signal transmission lines that are located in the display area; and a power supply voltage bus and connection lines that are located in the fan-out region. The sub-pixels are arranged in rows and columns, sub-pixels in a column are arranged along a second direction. A signal transmission line is electrically connected to column(s) of sub-pixels. The connection lines include first connection sub-lines, second connection sub-lines and third connection sub-lines that extend along the second direction and are located away from the sub-pixels. A first connection sub-line, a second connection sub-line and a third connection sub-line are electrically connected to the signal transmission line, the power supply voltage bus, and a clock signal line, respectively.

公开(公告)号：US20240040897A1

公开(公告)日：2024-02-01

申请号：US18022525

申请日：2022-03-17

Applicant: BOE Technology Group Co., Ltd.

Inventor： Li SUN ,  Zhongyuan WU ,  Pan XU ,  Hongli WANG ,  Kaihong MA ,  Huaiting SHIH

IPC: H10K59/80 ,  H10K59/12

CPC classification number: H10K59/80517 ,  H10K59/1201

Abstract: A display substrate includes a light-emitting structure layer provided on a base; the light-emitting structure layer includes an anode layer, a first film layer group, and a second film layer group that are sequentially stacked; the anode layer includes one or more anodes; the first film layer group includes at least one film layer located between an anode and a cathode in an OLED device; the second film layer group includes a cathode, and at least one film layer located between the anode and the cathode in the OLED device; the orthographic projection of the second film layer group on the base includes the orthographic projection of the first film layer group on the base, an overlapping portion of all film layers in the first film layer group serves as a first portion of the first film layer group.

公开(公告)号：US20240005869A1

公开(公告)日：2024-01-04

申请号：US17642786

申请日：2021-03-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xing ZHANG ,  Zhan GAO ,  Yicheng LIN ,  Pan XU ,  Ying HAN ,  Dacheng ZHANG

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2310/0286 ,  G09G2300/0842 ,  G09G2300/0426

Abstract: A display substrate and a display device are provided. The display substrate includes a base substrate and a plurality of sensing signal lines. The base substrate includes a display region including repeating units arranged in array, each repeating unit includes a transparent region and a pixel region arranged in a first direction. Two lines of repeating units are provided between adjacent two of the plurality of sensing signal lines, the two lines of repeating units extend along a second direction, and each of the plurality of sensing signal lines is connected with sub-pixel driving circuits of the plurality of sub-pixels of two lines of repeating units which are adjacent to the each of the plurality of sensing signal lines and extend along the second direction, and is configured to provide a reference voltage signal. The display substrate reduces the space occupied by the signal lines and improves the light transmittance.

公开(公告)号：US20230200144A1

公开(公告)日：2023-06-22

申请号：US17999002

申请日：2021-10-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Guoying WANG ,  Pan XU ,  Xing ZHANG ,  Ying HAN ,  Zhan GAO ,  Zhen SONG

IPC: H10K59/122 ,  H10K59/121 ,  H10K59/12

CPC classification number: H10K59/122 ,  H10K59/1216 ,  H10K59/1201

Abstract: The present disclosure provides a display panel, a display apparatus, and a fabrication method. The display panel includes: a substrate; a first insulating layer on the substrate; a device structure layer on the first insulating layer and including a transparent capacitor and a transistor; a first planarization layer that covers the device structure layer; a first electrode layer on the first planarization layer; a pixel defining layer on the side of the first planarization layer and device structure layer away from the substrate, wherein an orthographic projection of an opening of the pixel defining layer on the substrate at least partially overlaps with an orthographic projection of the transparent capacitor on the substrate; a functional layer at least partially located in the opening; and a second electrode layer on the side of the functional layer away from the first electrode layer.