公开(公告)号：US10930221B2

公开(公告)日：2021-02-23

申请号：US16424870

申请日：2019-05-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liang Chen ,  Lei Wang ,  Xiaochuan Chen ,  Minghua Xuan ,  Li Xiao ,  Dongni Liu ,  Shengji Yang ,  Pengcheng Lu ,  Ning Cong ,  Detao Zhao

IPC: G09G3/3291 ,  H01L51/52

Abstract: The present disclosure provides a light emitting unit, a driving method thereof, and a display device, belongs to the field of organic light emitting transistor (OLET) display technology, and can at least partially solve the problem of high power consumption of an existing OLET display technique. The light emitting unit includes an OLET and a driving circuit. The driving circuit is coupled to a control electrode and a first electrode of the OLET, and is configured to provide a data voltage to the control electrode of the OLET and provide a compensation voltage correlated with the data voltage to the first electrode of the OLET. A second electrode of the OLET is coupled to a first constant voltage terminal.

公开(公告)号：US20240429357A1

公开(公告)日：2024-12-26

申请号：US18274486

申请日：2022-08-31

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can Zhang ,  Ning Cong ,  Xinxin Zhao ,  Minghua Xuan

IPC: H01L33/62 ,  H01L25/16

Abstract: The present application provides a light emitting panel, a preparation method thereof, and a light emitting apparatus. The light emitting panel includes: a driving baseboard, including first conductive portions and driving units arranged in an array, and the first conductive portions are insulated from the driving units; light emitting devices arranged on the driving baseboard in an array, each of the light emitting devices includes a first electrode and a second electrode, the second electrode being electrically connected to one of the driving units, and the first electrode being electrically connected to the first conductive portion; a junction where at least one first electrode is electrically connected to the first conductive portion is different from junctions where first electrodes other than said first electrode are electrically connected to first conductive portions other than said first conductive portion.

公开(公告)号：US11893934B2

公开(公告)日：2024-02-06

申请号：US17256504

申请日：2019-09-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han Yue ,  Minghua Xuan ,  Can Zhang ,  Can Wang ,  Ming Yang ,  Ning Cong ,  Angran Zhang ,  Jiao Zhao ,  Xiaochuan Chen

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/029 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2330/10 ,  G09G2330/12

Abstract: A pixel driving circuit includes: a driving sub-circuit configured to supply a driving signal to an element to be driven; a detection sub-circuit electrically connected to a detection control signal terminal and a detection node and configured to detect a voltage value of the detection node in response to a detection control signal received at the detection control signal terminal. The detection node is equivalent to a point on a connection line between the driving sub-circuit and the element to be driven.

公开(公告)号：US11749194B2

公开(公告)日：2023-09-05

申请号：US17787681

申请日：2021-09-01

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can Zhang ,  Ning Cong ,  Minghua Xuan ,  Xiaochuan Chen

IPC: G09G3/3233 ,  G09G3/20

CPC classification number: G09G3/3233 ,  G09G3/2007 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2330/02

Abstract: A display substrate, a driving method therefor, and a display device are provided. The display substrate includes: a base substrate, provided with multiple pixel islands discretely provided, the pixel islands including multiple subpixels distributed in an array; a plurality of pixel circuits, arranged in the subpixels respectively, each of the pixel circuits including a driving transistor and a light-emitting component, a first electrode of the driving transistor being electrically connected to a first power supply end, a second electrode of the driving transistor being electrically connected to an anode of the light-emitting component, and a cathode of the light-emitting component being electrically connected to a second power supply end; and multiple light emission control circuits, each arranged at a gap between adjacent pixel islands, the light emission control circuit being electrically connected between the first power supply end and the first electrode of the driving transistor.

公开(公告)号：US11735115B2

公开(公告)日：2023-08-22

申请号：US17839178

申请日：2022-06-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Dongni Liu ,  Minghua Xuan ,  Xiaochuan Chen ,  Xue Dong ,  Haoliang Zheng ,  Han Yue ,  Ning Cong

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

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2310/0278 ,  G09G2310/061

Abstract: A pixel driving circuit includes a data writing sub-circuit, a driving sub-circuit, and a control sub-circuit. The data writing sub-circuit is configured to: in response to a first scanning signal and a third scanning signal, write a first data signal into the driving sub-circuit; and in response to a second scanning signal and the third scanning signal, write a second data signal into the driving sub-circuit. The control sub-circuit is configured to, in response to an enable signal, connect a driving transistor to a first power supply voltage signal terminal and an element to be driven. The driving sub-circuit is configured to: according to the first data signal and a first power supply voltage signal, output a driving to signal; and according to the second data signal and the first power supply voltage signal, control an operating state of the element to be driven.

公开(公告)号：US11694602B2

公开(公告)日：2023-07-04

申请号：US17040988

申请日：2020-04-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Ning Cong ,  Ming Yang ,  Han Yue ,  Can Wang ,  Can Zhang ,  Jiao Zhao ,  Minghua Xuan ,  Xiaochuan Chen

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/061

Abstract: The present disclosure discloses a pixel drive circuit and a display panel. The pixel drive circuit includes a Micro-LED, a cathode of which is grounded; a light-emitting control circuit connected with an anode of the Micro-LED and configured to control an emission time of the Micro-LED; a current control circuit connected with the light-emitting control circuit and configured to output a preset current to the light-emitting control circuit to control the Micro-LED to work under a set current density, and luminance efficiency of the Micro-LED under the set current density is greater than a set threshold value.

公开(公告)号：US11620935B2

公开(公告)日：2023-04-04

申请号：US16629097

申请日：2019-01-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Minghua Xuan ,  Han Yue ,  Ning Cong

IPC: G09G3/32

Abstract: A pixel circuit and a driving method thereof, a display panel, and a display device are provided. The pixel circuit includes a light-emitting driving circuit, a storage circuit, and a data writing circuit, a first terminal of the storage circuit is respectively electrically connected to the data writing circuit and the light-emitting driving circuit, a second terminal of the storage circuit is configured to receive a control signal, and the storage circuit is configured to receive and store the first data voltage, to generate a first control voltage, that changes with time, according to the control signal and the first data voltage, and to cause the first control voltage to be applied to the light-emitting driving circuit to control a turn-on time of the light-emitting driving circuit; and the light-emitting driving circuit is configured to drive the light-emitting element to emit light under control of the first control voltage.

公开(公告)号：US11348525B2

公开(公告)日：2022-05-31

申请号：US16479694

申请日：2019-01-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liang Chen ,  Lei Wang ,  Li Xiao ,  Dongni Liu ,  Xiaochuan Chen ,  Minghua Xuan ,  Ning Cong ,  Detao Zhao

IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/3258

Abstract: A pixel circuit, a display panel, and a display device comprising the pixel circuit. The pixel circuit comprises a light emitting element and a driving circuit. The driving circuit comprises a light emission driving circuit for driving the light emitting element to emit light, and a light sensing driving circuit for controlling the light emitting element to convert external light incident on the light emitting element into an electrical signal. The pixel circuit integrates the light emission driving circuit with the light sensing driving circuit and can achieve the light sensing function for the screen of the display device, which makes it possible to not reserve an area dedicated to a camera on the surface of the display device.

公开(公告)号：US11341898B2

公开(公告)日：2022-05-24

申请号：US16605384

申请日：2019-03-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han Yue ,  Minghua Xuan ,  Ning Cong ,  Xiaochuan Chen ,  Can Zhang ,  Can Wang ,  Ming Yang

IPC: G09G3/32

Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. The pixel driving circuit includes a pixel sub-circuit and a power supply control sub-circuit, the pixel sub-circuit includes a first connection terminal, a second connection terminal and a light-emitting element, and is configured to respectively receive a first voltage and a second voltage to drive the light-emitting element to emit light. The power supply control sub-circuit is configured to, in a first state, control the first power supply terminal to provide the first voltage to the first connection terminal of the pixel sub-circuit, control the second power supply terminal to provide the second voltage to the second connection terminal of the pixel sub-circuit, and store energy; and in a second state, release the energy to the first connection terminal and the second connection terminal of the pixel sub-circuit to drive the light-emitting element to emit light.

公开(公告)号：US11335243B2

公开(公告)日：2022-05-17

申请号：US16904585

申请日：2020-06-18

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haoliang Zheng ,  Minghua Xuan ,  Dongni Liu ,  Ning Cong ,  Zhenyu Zhang ,  Lijun Yuan ,  Yi Ouyang ,  Guangliang Shang

IPC: G09G3/32

Abstract: Disclosed are a display panel and a display device. The display panel includes M rows and N columns of pixel units. The display panel is divided into R regions along a column direction, and an i-th region includes: (1+M(i−1)/R)-th row to a (Mi/R)-th row of pixel units. The display panel further includes M shift registers, M light emitting drivers, R light emitting control scan staring signal terminals, R scan start signal terminals for controlling time length and R scan start signal terminals for controlling current. An i-th row of pixel units is connected with an i-th shift register and an i-th light emitting driver, a light emitting driver connected to a first row of pixel units in the i-th region is connected with an i-th scan start signal terminal for controlling light emission.