公开(公告)号：US20180224679A1

公开(公告)日：2018-08-09

申请号：US15571253

申请日：2017-03-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yi Chen

IPC: G02F1/13 ,  G06F3/0481 ,  G02F1/1362

CPC classification number: G02F1/1309 ,  G02F1/1362 ,  G02F1/136259 ,  G02F2001/134345 ,  G06F3/04812 ,  G09G3/006 ,  G09G3/3607 ,  G09G2300/0452

Abstract: The present disclosure provides a method for locating sub-pixel address, an address location device and a repairing device. The method includes: obtaining an address of a location sub-pixel which is located by a cursor of the address location device in a liquid crystal panel; and calculating an address of a target sub-pixel in one pixel to which the location sub-pixel belongs, by using a sub-pixel arrangement structure of the one pixel of the liquid crystal panel as well as the address of the location sub-pixel. The target sub-pixel is one sub-pixel which is unable to be located by the cursor.

公开(公告)号：US20240404475A1

公开(公告)日：2024-12-05

申请号：US18782025

申请日：2024-07-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Fei Yang ,  Song Meng ,  Zhiqiang Dong ,  Yi Chen ,  Jingbo Xu ,  Jianbo Xian

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A data driving integrated circuit includes a digital-to-analog converter configured to receive a respective digital data signal from a timing controller and convert the respective digital data signal to a respective analog data signal, which is output to a display panel through a respective data line; an analog-to-digital converter configured to receive a respective analog sensing signal from a respective sensing line in the display panel and convert respective analog sensing signal to a respective digital sensing signal, which is output to the timing controller; a first sensing switch configured to control a connection between a first reference voltage line and the respective sensing line; a second sensing switch configured to control a connection between a second reference voltage line and the respective sensing line; and a third sensing switch configured to control the connection between the analog-to-digital converter and the respective sensing line.

公开(公告)号：US11984080B2

公开(公告)日：2024-05-14

申请号：US18028925

申请日：2021-10-22

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yi Chen ,  Xing Zhang

IPC: G09G3/3233 ,  G09G3/00 ,  G09G3/3208 ,  G09G3/3225

CPC classification number: G09G3/3233 ,  G09G3/006 ,  G09G3/3208 ,  G09G3/3225 ,  G09G2300/0852 ,  G09G2310/0294 ,  G09G2310/08 ,  G09G2320/02 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/045 ,  G09G2330/12

Abstract: A pixel compensation circuit includes: a pixel driving circuit including a driving transistor; a detection signal line coupled to the pixel driving circuit and providing a reset signal to a source of the driving transistor or receiving a source voltage of the driving transistor; a sampling module including a switch unit coupled to the detection signal line, a first and second storage units coupled to the switch unit enabling the first storage unit to be connected to the detection signal line, the first storage unit storing a voltage on the detection signal line and taking same as a reference voltage, and enabling the second storage unit to be connected to the detection signal line, the second storage unit storing the source voltage; a comparison and calculation module coupled to the first and second storage units, generates sampling data according to the difference between the reference voltage and the source voltage.

公开(公告)号：US11626078B2

公开(公告)日：2023-04-11

申请号：US16955986

申请日：2019-08-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Fei Yang ,  Yi Chen ,  Lirong Wang

IPC: G09G3/3275

Abstract: The present disclosure provides a detection circuit (10) and a driving method, a driving circuit (20), a driving apparatus (100) and a display apparatus. The detection circuit (10) comprises a switching sub-circuit (101) and an analog-to-digital conversion sub-circuit (102). The switching sub-circuit (101) may control on-off states between a sense line (SL) and a reference power terminal (VF), a reset power terminal (RST) and the analog-to-digital conversion sub-circuit (102) according to control signals provided by the external compensation circuit (01). Wherein, a sense signal may include pixel characteristic values or may be a reference power signal.

公开(公告)号：US11289025B2

公开(公告)日：2022-03-29

申请号：US17255104

申请日：2020-05-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tangxiang Wang ,  Yi Chen ,  Zhan Gao

IPC: G09G3/3258 ,  G09G3/3241

Abstract: A pixel compensation circuit includes: an integration circuit, a comparison circuit, a timing circuit, and a processor, wherein the integration circuit is configured to integrate driving currents of a pixel circuit, and then output a first voltage; the comparison circuit is configured to receive the first voltage, compare the first voltage with a first reference voltage, and then output a first logic control signal; the timing circuit is configured to acquire a first working duration; and the processor is configured to acquire the first working duration, obtain, according to correlations between the pre-obtained working duration and the pixel driving currents, a target driving current, corresponding to the first working duration, of the pixel circuit, and obtain a compensation parameter according to the target driving current.

公开(公告)号：US11025266B2

公开(公告)日：2021-06-01

申请号：US16489150

申请日：2019-03-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tangxiang Wang ,  Chen Song ,  Zhan Gao ,  Yi Chen

IPC: H03M1/68 ,  G09G3/20 ,  H03M1/76

Abstract: Embodiments of the present disclosure provide a digital-to-analog converter, a conversion circuit and a display device. An M-bit digital-to-analog converter includes a higher M−N-bit digital-to-analog conversion circuit, a voltage conversion circuit, an output circuit. The higher M−N-bit digital-to-analog conversion circuit includes: a higher M−N-bit voltage division generation circuit, a first voltage selection circuit. The first voltage selection circuit selects a first voltage from the higher M−N-bit voltage division generation circuit based on a higher M−N-bit digital signal, to be output from a first voltage end. The voltage conversion circuit charges a capacitor circuit under the control of a first switch circuit and a second switch circuit, and discharges a second voltage to a second voltage end through the capacitor circuit. The output circuit controls the first voltage and the second voltage based on a lower N-bit digital signal, generates an analog voltage signal corresponding to an M-bit digital signal.

公开(公告)号：US10997898B2

公开(公告)日：2021-05-04

申请号：US17007120

申请日：2020-08-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lirong Wang ,  Fei Yang ,  Yi Chen ,  Yu Wang ,  Mingi Chu

IPC: G09G3/20 ,  G09G3/3291

Abstract: The present disclosure provides a compensation method for a display panel, a compensation system for a display panel, and a display device. The display panel includes a plurality of sub-pixels, and the compensation method includes: respectively determining a current aging degree coefficient of each sub-pixel according to historical display data of the sub-pixel; and, for each sub-pixel, performing aging compensation on the sub-pixel according to the current aging degree coefficient of the sub-pixel when a current frame is displayed. The present disclosure further provides a compensation system for a display panel, and a display device.

公开(公告)号：US10769989B2

公开(公告)日：2020-09-08

申请号：US15977183

申请日：2018-05-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yi Chen

IPC: G09G3/3225 ,  G09G3/3291 ,  G09G3/00 ,  G09G3/3233

Abstract: A detecting method and device for detecting threshold voltages of driving transistors. The detecting method includes: loading data signals and reference signals on respective driving transistors in a detection group; when the respective driving transistors are in a turn-off state, detecting first-electrode voltages of the respective driving transistors; and determining a target adjustment set in the detection group according to the first-electrode voltages of the respective driving transistors and a preset voltage range. For each target driving transistor in the target adjustment set, the detecting method further includes: adjusting at least one of a data signal and a reference signal loaded on the target driving transistor; when the target driving transistor is in the turn-off state, detecting a first-electrode target voltage of the target driving transistor; and determining a threshold voltage of the target driving transistor according to the first-electrode target voltage of the target driving transistor.

公开(公告)号：US10571725B2

公开(公告)日：2020-02-25

申请号：US15571253

申请日：2017-03-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yi Chen

IPC: G02F1/13 ,  G09G3/00 ,  G02F1/1362 ,  G06F3/0481 ,  G09G3/36 ,  G02F1/1343

Abstract: The present disclosure provides a method for locating sub-pixel address, an address location device and a repairing device. The method includes: obtaining an address of a location sub-pixel which is located by a cursor of the address location device in a liquid crystal panel; and calculating an address of a target sub-pixel in one pixel to which the location sub-pixel belongs, by using a sub-pixel arrangement structure of the one pixel of the liquid crystal panel as well as the address of the location sub-pixel. The target sub-pixel is one sub-pixel which is unable to be located by the cursor.

公开(公告)号：US20190206326A1

公开(公告)日：2019-07-04

申请号：US16043977

申请日：2018-07-24

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lirong Wang ,  Quanhu Li ,  Fei Yang ,  Danna Song ,  Mingi Chu ,  Song Meng ,  Yu Wang ,  Yi Chen ,  Zhongyuan Wu

IPC: G09G3/3258 ,  G09G3/20 ,  H05B33/08

CPC classification number: G09G3/3258 ,  G09G3/2003 ,  G09G2310/0264 ,  H05B33/0857

Abstract: The disclosure discloses a method for driving a pixel circuit, a drive device and a display device. The method includes: receiving grayscale data to be displayed; determining a voltage compensation value, which corresponds to theoretical drive voltage corresponding to the grayscale data to be displayed, according to a pre-acquired correspondence relationship between theoretical drive voltage corresponding to respective grayscale data, and corresponding voltage compensation values; wherein the voltage compensation value is a voltage drop caused by a detection transistor and a drive transistor in the pixel circuit; and compensating the theoretical drive voltage corresponding to the grayscale data to be displayed with the determined voltage compensation value, and then driving a light-emitting diode in the pixel circuit to emit light.