公开(公告)号：US11250782B1

公开(公告)日：2022-02-15

申请号：US17213557

申请日：2021-03-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Weixing Liu ,  Zhiqiang Xu ,  Tieshi Wang ,  Wei Qin ,  Wanpeng Teng

IPC: G09G3/3258 ,  G09G3/3241

Abstract: A pixel circuit, a pixel driving method, and a display device are provided. The pixel circuit includes a light emitting element, a first voltage control circuit, a second voltage control circuit, a driving circuit, a first energy storage circuit, a data writing circuit, and a reset circuit. The first voltage control circuit includes a first control transistor, the driving circuit includes a driving transistor, and a difference between a threshold voltage of the first control transistor and a threshold voltage of the driving transistor is within a first range. The first voltage control circuit controls a potential of a first control node under control of a reset control signal; and the second voltage control circuit controls a potential of a second control node under control of the potential of the first control node.

公开(公告)号：US11250781B2

公开(公告)日：2022-02-15

申请号：US16829407

申请日：2020-03-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei Qin ,  Zhiqiang Xu ,  Xiaolong Li ,  Tieshi Wang ,  Weixing Liu ,  Kai Guo ,  Jintao Peng ,  Yanan Niu ,  Kuanjun Peng

IPC: G09G3/3258 ,  G06F3/044 ,  G06F3/041 ,  G06K9/00 ,  G09G3/3291

Abstract: A pixel circuit includes a sensing circuit, a gray-scale control circuit and a light-emitting switch circuit; the sensing circuit is configured to charge and discharge a sensing capacitor when a sensing capacitor is formed by a touch object and an anode layer of OLED; the gray-scale control circuit is configured to control the light-emitting intensity of the OLED; the light-emitting switch circuit is configured to control the OLED to emit light.

公开(公告)号：US11238803B2

公开(公告)日：2022-02-01

申请号：US17271776

申请日：2020-07-22

Applicant: BOE Technology Group Co., Ltd.

Inventor： Weixing Liu ,  Tieshi Wang ,  Zhiqiang Xu ,  Shengnan Li ,  Wanpeng Teng ,  Chunfang Zhang ,  Xiaolong Li ,  Wei Qin ,  Kai Guo ,  Kuanjun Peng

IPC: G09G3/3258 ,  H01L27/32 ,  H01L51/50

Abstract: The present disclosure provides a pixel circuit and a method for driving the same, and a display panel. The pixel circuit includes a driving sub-circuit and a light-emitting control sub-circuit. The driving sub-circuit is configured to transmit a first power voltage at a first power signal terminal to a second node. The light-emitting control sub-circuit is configured to: transmit a voltage at the second node and a second power voltage at the second power signal terminal to the first electrode of the first light-emitting element and the second electrode of the first light-emitting element respectively in a first period, to the first electrode of the second light-emitting element and the second electrode of the second light-emitting element respectively in a second period, and to the first electrode of the third light-emitting element and the second electrode of the third light-emitting element respectively in a third period.

公开(公告)号：US11114061B2

公开(公告)日：2021-09-07

申请号：US16623609

申请日：2019-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling Gao ,  Kuanjun Peng ,  Chengchung Yang ,  Zhiqiang Xu ,  Wei Qin ,  Tieshi Wang ,  Xiaolong Li ,  Shengnan Li ,  Wanpeng Teng

IPC: G09G5/10 ,  G09G3/3275

Abstract: The present disclosure relates to a light-emission control signal generating device and a display device. The light-emission control signal generating device includes: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits; wherein the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals.

公开(公告)号：US20210142719A1

公开(公告)日：2021-05-13

申请号：US16835479

申请日：2020-03-31

Applicant: BOE Technology Group Co., Ltd.

Inventor： Wei Qin ,  Xiaolong Li ,  Kuanjun Peng ,  Chunfang Zhang ,  Zhiqiang Xu ,  Yanan Niu

IPC: G09G3/325 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

Abstract: Embodiments of the present disclosure provide a pixel driving circuit and a driving method thereof, a display panel and a display device. The pixel driving circuit includes: a driving sub-circuit, coupled to a scanning signal terminal, a data signal terminal, a light-emitting control signal terminal, a first voltage signal terminal, and a first terminal of a light-emitting element, and configured to be able to output a first voltage signal from the first voltage signal terminal to the light-emitting element under the control of a scanning signal from the scanning signal terminal, a data signal from the data signal terminal, and a light-emitting control signal from the light-emitting control signal terminal; and an electrostatic discharge sub-circuit, coupled to a second voltage signal terminal and the first terminal of the light-emitting element, and configured to be able to conduct static electricity to the second voltage signal terminal in response to the static electricity generated at the first terminal of the light-emitting element.

公开(公告)号：US10971069B2

公开(公告)日：2021-04-06

申请号：US16616234

申请日：2019-04-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tieshi Wang ,  Kuanjun Peng ,  Wei Qin ,  Chengchung Yang ,  Xueling Gao ,  Xiaolong Li ,  Zhiqiang Xu ,  Yan Wei ,  Shengnan Li

IPC: G09G3/3258

Abstract: A pixel driving circuit, a driving method and a display device are provided. The pixel driving circuit includes a driving unit, a capacitor unit, a data write-in unit connected to a corresponding gate line, a corresponding data line and the driving unit, a power source control unit connected to a first light-emitting control end, a power source signal input end and the driving unit, and a first light-emitting control unit connected to a second light-emitting control end, the power source signal input end and the driving unit and configured to, within a predetermined time period of a light-emitting stage, control the power source signal input end to be electrically connected to the driving unit under the control of the second light-emitting control end, stop the operation of the driving unit, and enable the light-emitting unit not to emit light.

公开(公告)号：US09928798B2

公开(公告)日：2018-03-27

申请号：US14381719

申请日：2013-12-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yoon Sung Um ,  Hyun Sic Choi ,  Zhiqiang Xu ,  Hui Li

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/20 ,  G09G3/3655 ,  G09G2230/00 ,  G09G2320/0219 ,  G09G2320/0242 ,  G09G2330/028 ,  G09G2360/16

Abstract: A voltage control method and device for electrodes, wherein the method includes inputting a varying voltage signal to common electrodes on an array substrate. The solution of the present application may avoid the problem of greenish picture of products due to influence of data line voltage on common electrodes.

公开(公告)号：US09888100B2

公开(公告)日：2018-02-06

申请号：US15321107

申请日：2016-03-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhiqiang Xu

IPC: H04M1/00 ,  H04B1/38 ,  H04M1/02 ,  G09F9/30

CPC classification number: H04M1/0216 ,  G09F9/301 ,  H04M1/0268

Abstract: The present disclosure relates to a foldable display device, including: first and second housings, which are hinged through a first shaft and have first and second closed surfaces respectively and which are capable of rotating about the first shaft to be open or closed; and a touch screen covering the first and second closed surfaces. The touch screen has a bendable region corresponding to a connection region for the first and second housings, the bendable region presenting a planar structure when the first and second housings are open and presenting a smooth curved structure when the first and second housings are closed. A first groove is defined in an end of the first housing neighboring the second housing, and a second groove is defined in an end of the second housing neighboring the first housing. The first and second grooves together define an accommodation space for accommodating the bendable region.

公开(公告)号：US09874904B2

公开(公告)日：2018-01-23

申请号：US15325875

申请日：2016-06-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhiqiang Xu

IPC: H05K5/02 ,  G06F1/16

CPC classification number: G06F1/1641 ,  G06F1/16 ,  G06F1/1616

Abstract: The present application discloses a display apparatus including a foldable display panel comprising a bendable portion, a first nonbendable flat portion and a second nonbendable flat portion on two opposite sides of the bendable portion; a first housing portion and a second housing portion coupled together by a hinge and rotatable with respect to each other between a first configuration corresponding to the foldable display panel in an unfolded configuration and a second configuration corresponding to the foldable display panel in a folded configuration; and a first movable support received in the first housing portion for supporting the first nonbendable flat portion and configured to be movable between a first position corresponding to the unfolded configuration and a second position corresponding to the folded configuration. The first movable support at the first position supporting a part of the bendable portion of the foldable display panel; and the first movable support at the second position providing a space for receiving the bendable portion bent therein.

公开(公告)号：US20170160769A1

公开(公告)日：2017-06-08

申请号：US15325875

申请日：2016-06-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Zhiqiang Xu

IPC: G06F1/16

CPC classification number: G06F1/1641 ,  G06F1/16 ,  G06F1/1616

Abstract: The present application discloses a display apparatus including a foldable display panel comprising a bendable portion, a first nonbendable flat portion and a second nonbendable flat portion on two opposite sides of the bendable portion; a first housing portion and a second housing portion coupled together by a hinge and rotatable with respect to each other between a first configuration corresponding to the foldable display panel in an unfolded configuration and a second configuration corresponding to the foldable display panel in a folded configuration; and a first movable support received in the first housing portion for supporting the first nonbendable flat portion and configured to be movable between a first position corresponding to the unfolded configuration and a second position corresponding to the folded configuration. The first movable support at the first position supporting a part of the bendable portion of the foldable display panel; and the first movable support at the second position providing a space for receiving the bendable portion bent therein.