公开(公告)号：US11011118B2

公开(公告)日：2021-05-18

申请号：US15776977

申请日：2017-11-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yicheng Lin ,  Quanhu Li ,  Guang Yan ,  Yu Wang ,  Cuili Gai ,  Mingi Chu

IPC: G06F3/038 ,  G09G5/00 ,  G09G3/3283

Abstract: The present application discloses a pixel-driving circuit in a display panel. The pixel-driving circuit includes a first transistor being provided with a fixed voltage, a driving transistor having a gate configured to receive the fixed voltage controlled by the first transistor and a drain coupled to a first power supply, a capacitor coupled between the gate and a source of the driving transistor, a light-emitting device coupled to the source and a second power supply, a second transistor having a drain coupled to the source of the driving transistor and a source coupled to a data line, a sensing sub-circuit coupled to the data line in a first period, and a driving sub-circuit coupled to the data line in a second period. The sensing sub-circuit and the driving sub-circuit are configured to connect to the data line in a time-divisional manner respectively for sensing and compensating the pixel-driving circuit.

公开(公告)号：US20210065624A1

公开(公告)日：2021-03-04

申请号：US16630305

申请日：2019-06-05

Applicant: BOE Technology Group Co., Ltd.

Inventor： Quanhu Li ,  Yongfu Diao ,  Wenkang Wang ,  Zhongliu Yang ,  Mingjing Yang

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A pixel circuit, a method for driving a pixel circuit, and a display device are provided. The pixel circuit includes: a storage circuit, a data writing circuit, a light emitting driving circuit, and a compensation circuit. The data writing circuit is configured to write a data voltage to the storage circuit under control of a scanning control signal; the storage circuit is configured to store the data voltage and enable a stored data voltage to be available to the compensation circuit for a compensation operation; the compensation circuit is configured to maintain a compensation voltage based on the stored data voltage at a control terminal of the light emitting driving circuit under control of a compensation control signal; and the light emitting driving circuit configured to drive the light emitting element to emit light under control of the compensation voltage.

公开(公告)号：US10861926B2

公开(公告)日：2020-12-08

申请号：US16303340

申请日：2018-04-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Ling Wang ,  Yicheng Lin ,  Baoxia Zhang ,  Pan Xu ,  Quanhu Li

IPC: H01L27/32 ,  G09G3/3225 ,  H01L51/50 ,  H01L51/56 ,  H01L51/52

Abstract: The present disclosure is related to a display substrate. The display substrate may include a plurality of pixel units. Each of the plurality of the pixel units may include a first electrode and a second electrode on a base substrate. At least one of the pixel units further comprises an auxiliary electrode and a connecting structure between the auxiliary electrode and the first electrode. The connecting structure may be configured to electrically connect the auxiliary electrode to the first electrode.

公开(公告)号：US20200327855A1

公开(公告)日：2020-10-15

申请号：US15776977

申请日：2017-11-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yicheng Lin ,  Quanhu Li ,  Guang Yan ,  Yu Wang ,  Cuili Gai ,  Mingi Chu

IPC: G09G3/3283

Abstract: The present application discloses a pixel-driving circuit in a display panel. The pixel-driving circuit includes a first transistor being provided with a fixed voltage, a driving transistor having a gate configured to receive the fixed voltage controlled by the first transistor and a drain coupled to a first power supply, a capacitor coupled between the gate and a source of the driving transistor, a light-emitting device coupled to the source and a second power supply, a second transistor having a drain coupled to the source of the driving transistor and a source coupled to a data line, a sensing sub-circuit coupled to the data line in a first period, and a driving sub-circuit coupled to the data line in a second period. The sensing sub-circuit and the driving sub-circuit are configured to connect to the data line in a time-divisional manner respectively for sensing and compensating the pixel-driving circuit.

公开(公告)号：US10763391B2

公开(公告)日：2020-09-01

申请号：US16182883

申请日：2018-11-07

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yicheng Lin ,  Cuili Gai ,  Baoxia Zhang ,  Ling Wang ,  Quanhu Li ,  Pan Xu

IPC: H01L33/00 ,  G09G3/00 ,  H01L51/00 ,  H01L27/32 ,  G09G3/3225

Abstract: The present disclosure provides a display panel, a display device comprising such a display panel, and a method for processing defective pixels of such a display panel. The display panel comprises: a substrate; a plurality of pixel units on the substrate and arranged in an array. Each of the pixel units includes a light emitting region and a driving circuit region. In each of the pixel units, the driving circuit region includes a transistor, the light emitting region includes a first electrode, and the first electrode is electrically coupled to a first terminal of the transistor. In a row direction or a column direction of the plurality of pixel units arranged in an array, light emitting regions of two adjacent pixel units are adjacent to each other.

公开(公告)号：US10607545B2

公开(公告)日：2020-03-31

申请号：US15736519

申请日：2017-06-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yicheng Lin ,  Quanhu Li ,  Cuili Gai ,  Baoxia Zhang ,  Longyan Wang ,  Ling Wang

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

Abstract: An OLED driving circuit, an array substrate and a display device are provided. The OLED driving circuit includes a plurality of driving TFTs and a plurality of sense TFTs. Each sense TFT is configured to compensate for a threshold voltage of the respective driving TFT. Each sense TFT corresponds to a respective one of the driving TFTs, a source electrode of each sense TFT is connected to a sense line, and a drain electrode thereof is connected to a drain electrode of the respective driving TFT. The plurality of sense TFTs is divided into a plurality of groups, each group includes at least two sense TFTs which share a same gate electrode and a same source electrode and are connected to a same sense line.

公开(公告)号：US10559243B2

公开(公告)日：2020-02-11

申请号：US15579432

申请日：2017-06-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yongqian Li ,  Pan Xu ,  Quanhu Li

IPC: G09G3/20 ,  G09G3/22

Abstract: A pixel driving circuit and a driving method thereof, an array substrate and a display device are provided. The pixel driving circuit includes: a color data write unit, a luminance control unit, and a graphene light-emitting device. The graphene light-emitting device can emit light under the control of a color data signal and a luminance control signal. The driving method of a pixel driving circuit is conducted to drive the pixel driving circuit.

公开(公告)号：US20190221633A1

公开(公告)日：2019-07-18

申请号：US16303340

申请日：2018-04-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Ling Wang ,  Yicheng Lin ,  Baoxia Zhang ,  Pan Xu ,  Quanhu Li

IPC: H01L27/32 ,  H01L51/52 ,  H01L51/50 ,  G09G3/3225 ,  H01L51/56

CPC classification number: H01L27/3276 ,  G09G3/3225 ,  G09G2300/0426 ,  H01L27/3279 ,  H01L51/5012 ,  H01L51/5228 ,  H01L51/56 ,  H01L2251/5315

Abstract: The present disclosure is related to a display substrate. The display substrate may include a plurality of pixel units. Each of the plurality of the pixel units may include a first electrode and a second electrode on a base substrate. At least one of the pixel units further comprises an auxiliary electrode and a connecting structure between the auxiliary electrode and the first electrode. The connecting structure may be configured to electrically connect the auxiliary electrode to the first electrode.

公开(公告)号：US10276098B2

公开(公告)日：2019-04-30

申请号：US15116624

申请日：2015-10-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Cuili Gai ,  Kun Cao ,  Baoxia Zhang ,  Yongqian Li ,  Quanhu Li ,  Longyan Wang ,  Jingwen Yin

IPC: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  H01L27/12 ,  H01L27/32

Abstract: There are provided in the present disclosure a pixel driving circuit, an array substrate and a display apparatus. The pixel driving circuit comprises: a compensation module (11), a control module (12), a driving modeling (13), and a light emitting module (14), wherein: the compensation module (11) is connected to a scan signal (Scan), a data signal (Vdata) and a reference signal (VREF) and further connected to the control module (12) and the drive module (13), and is configured to receive the data signal (Vdata) and the reference signal (VREF) under the control of the scan signal (Scan) and compensate for a threshold voltage of the drive module (13) under the control of the control module (12); the control module (12) is connected to a light emitting control signal (EM) and a power supply signal (ELVDD) and further connected to the drive module (13) and the light emitting module (14), and is configured to receive the power supply signal (ELVDD) under the control of the light emitting control signal (EM) to control the compensation module (11) to compensate for the threshold voltage of the drive module (13); one terminal of the light emitting module (14) is connected to the drive module (13), and the other terminal thereof is grounded (VSS); and; the drive module (13) is configured to drive the light emitting module (14) to emit light under the control of the control module (12). The pixel driving circuit is capable of avoiding non-uniformity of luminance of the display device, and enhancing the display effect of the display device.

公开(公告)号：US10249613B2

公开(公告)日：2019-04-02

申请号：US15736753

申请日：2017-05-15

Applicant: Boe Technology Group Co., Ltd.

Inventor： Cuili Gai ,  Longyan Wang ,  Ling Wang ,  Quanhu Li ,  Yi-cheng Lin

IPC: H01L21/77 ,  H01L27/02 ,  H01L27/12 ,  H01L29/788 ,  H01L29/66 ,  H01L49/02 ,  H01L21/768 ,  H01L29/786

Abstract: An electrostatic discharge device comprises a transistor with one of its source and drain serving as an input terminal of said device and the other serving as an output terminal. Said transistor comprises: a first conductive layer used as a first floating gate; a first insulating layer covering said first conductive layer; an active layer on said first insulating layer; a second insulating layer covering said active layer; a second conductive layer used as a second floating gate and on said second insulating layer; a third insulating layer covering said second conductive layer; a third conductive layer and a fourth conductive layer on said third insulating layer and on both sides of the active layer, said third conductive layer being isolated from the fourth conductive layer, wherein said third conductive layer serves as one of the source and the drain and said fourth conductive layer serves as the other.