公开(公告)号：US20230088068A1

公开(公告)日：2023-03-23

申请号：US17908017

申请日：2021-05-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Long HAN ,  Pinfan WANG ,  Fangxu CAO ,  Wenqiang LI ,  Libin LIU

IPC: H10K59/35 ,  H10K59/121 ,  H10K59/126 ,  H10K50/84

Abstract: A display panel includes an array substrate and an encapsulation layer encapsulated on a surface of the array substrate. The display panel further includes a stretching area located in a corner area of the display panel and at least partially located in a display area of the display panel, and the stretching area is provided with a hollow opening penetrating through the array substrate and the encapsulation layer.

公开(公告)号：US20230042966A1

公开(公告)日：2023-02-09

申请号：US17793841

申请日：2021-05-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lujiang HUANGFU ,  Li WANG ,  Can ZHENG ,  Tian DONG ,  Libin LIU

IPC: G09G3/3258

Abstract: A pixel driving circuit includes: an energy storage sub-circuit, a reset sub-circuit, a compensation sub-circuit, a driving sub-circuit, and a current leakage suppression sub-circuit. The energy storage sub-circuit is coupled to a first node and a second node. The reset sub-circuit is coupled to the second node, a first scan timing signal terminal, and an initialization signal terminal. The compensation sub-circuit is coupled to the second node, a third node, and a second scan timing signal terminal. The driving sub-circuit is coupled to the second node, the third node, and a first voltage signal terminal. The current leakage suppression sub-circuit is coupled to the energy storage sub-circuit, the reset sub-circuit, and the compensation sub-circuit. The current leakage suppression sub-circuit is configured to suppress current leakage of the energy storage sub-circuit in a process of generating and transmitting the driving signal by the driving sub-circuit.

公开(公告)号：US20230028377A1

公开(公告)日：2023-01-26

申请号：US17638720

申请日：2021-02-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yuhan QIAN ,  Libin LIU

IPC: G09G3/3233 ,  H01L27/32 ,  H01L51/56

Abstract: A pixel driving circuit includes a first thin film transistor having a double-gate structure, a conductive layer and a second thin film transistor. The first thin film transistor includes a first active layer. The first active layer includes a first and second semiconductor portions and a conductor portion located therebetween. The conductor portion has a first doping concentration. The conductive layer is at least partially opposite to the conductor portion, so that the conductive layer and the conductor portion form a capacitor. The conductive layer is configured to electrically connect to an initial voltage terminal. The second thin film transistor includes a second active layer and a first gate. A portion of the second active layer directly opposite to the first gate has a second doping concentration, and the second doping concentration is lower than the first doping concentration.

公开(公告)号：US20230004190A1

公开(公告)日：2023-01-05

申请号：US17782770

申请日：2021-04-21

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yuhan QIAN ,  Libin LIU ,  Long HAN

IPC: G06F1/16

Abstract: A display substrate, a manufacturing method thereof, and a display device are provided. The display substrate includes: a non-stretchable display region and a stretchable display region. The stretchable display region includes multiple island regions in an array and separated from each other, and multiple bridge regions connecting adjacent island regions, a pixel unit is arranged on each of the island regions, the pixel unit includes at least one pixel, and a signal wire electrically connecting the pixels is arranged on each bridge region. A pixel pitch between the pixels in the pixel unit in a stretching direction is a reference pitch P0, a pitch between two adjacent pixel units in the stretching direction is a first pitch P1, and the first pitch P1 is less than the reference pitch P0.

公开(公告)号：US20220383822A1

公开(公告)日：2022-12-01

申请号：US17628779

申请日：2021-04-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Guangliang SHANG ,  Jie ZHANG ,  Shuo HUANG ,  Libin LIU ,  Shiming SHI ,  Hao LIU ,  Haoliang ZHENG ,  Xing YAO

IPC: G09G3/3266 ,  G11C19/28 ,  G09G3/36

Abstract: A shift register, a driving method, a driving control circuit and a display device. The method comprises: at a data refresh stage (T10), applying to an input signal end (IP) an input signal having a pulse level, applying a control clock pulse signal to a control clock signal end, and applying a noise reduction clock pulse signal to a noise reduction clock signal end; at a noise reduction holding phase (T21-1), applying a fixed voltage signal to the input signal end (IP), applying a fixed voltage signal to the control clock signal end, and applying a fixed voltage signal to the noise reduction clock signal end; and at a noise reduction enhancement stage (T22-1), applying a fixed voltage signal to the input signal end (IP), applying a fixed voltage signal to the control clock signal end, and applying a clock pulse signal to the noise reduction clock signal end.

公开(公告)号：US20220383811A1

公开(公告)日：2022-12-01

申请号：US16958480

申请日：2019-07-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Libin LIU ,  Mei LI ,  Hongli WANG

IPC: G09G3/3233 ,  H01L27/32

Abstract: A display substrate, a preparation method thereof, a display panel, and a display device are provided. The display substrate includes a base substrate and a repeating unit, the repeating unit includes a plurality of sub-pixels including a first sub-pixel and a second sub-pixel, a color of light emitted by a light-emitting element of the first sub-pixel is identical to a color of light emitted by a light-emitting element of the second sub-pixel, a shape of a first light-emitting voltage application electrode of the light-emitting element of the first sub-pixel is different from a shape of a first light-emitting voltage application electrode of the light-emitting element of the second sub-pixel.

公开(公告)号：US20220336572A1

公开(公告)日：2022-10-20

申请号：US17844305

申请日：2022-06-20

Applicant: BOE Technology Group Co., Ltd.

Inventor： Li WANG ,  Libin LIU

IPC: H01L27/32

Abstract: There is provided a display substrate, in which, a first reference voltage line and a first reference voltage auxiliary line, which extend in different directions, are respectively disposed in one of a second wiring layer, a third wiring layer and a fourth wiring layer, a second reference voltage line extends in the same direction as the first reference voltage auxiliary line, the first reference voltage auxiliary line is electrically coupled to the first reference voltage line through via holes in an insulating layer therebetween, via a coupling line extending in the same direction as the first reference voltage line, the first reference voltage auxiliary line and the first reference voltage line provide a reset voltage to a first electrode of a first capacitor, and the second reference voltage line provides a reset voltage to a pixel electrode in a pixel electrode layer. A display device is further provided.

公开(公告)号：US20220199022A1

公开(公告)日：2022-06-23

申请号：US17599387

申请日：2021-01-14

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lujiang HUANGFU ,  Libin LIU ,  Can ZHENG

IPC: G09G3/3233

Abstract: The present disclosure provides a display panel, a pixel circuit and a method for driving the pixel circuit, the pixel circuit includes: a storage capacitor circuit; a light-emitting element; a driving transistor; a reset circuit, the reset circuit is configured to receive a reset control signal and reset a first node and a second node according to the reset control signal, or receive a writing control signal and/or a timing sequence control signal of an adjacent pixel row and reset the first node and the second node according to the writing control signal and/or the timing sequence control signal of the adjacent pixel row; a threshold compensation circuit, configured to receive a compensation control signal and write a compensation voltage into the first node according to the compensation control signal; a writing circuit; and a light-emitting control circuit.

公开(公告)号：US20220114958A1

公开(公告)日：2022-04-14

申请号：US17278713

申请日：2020-05-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yu FENG ,  Libin LIU ,  Lujiang HUANGFU

IPC: G09G3/3233 ,  G09G3/3258 ,  H01L27/12

Abstract: The display panel includes: a base substrate; a silicon semiconductor layer, the silicon semiconductor layer including active silicon layers of a driving transistor and an initialization transistor, each of the active silicon layers being provided with a first region, a second region and a first channel region therebetween; a first insulating layer, a first conducting layer, a second insulating layer and an oxide semiconductor layer, the oxide semiconductor layer including an active oxide layer of a voltage stabilizing transistor, the oxide semiconductor layer being provided with a third region, a fourth region and a second channel region therebetween. In the same sub-pixel, the second region of the active silicon layer of the initialization transistor is electrically connected to the third region, and the fourth region is electrically connected to a gate electrode of the driving transistor.

公开(公告)号：US20220020827A1

公开(公告)日：2022-01-20

申请号：US17310325

申请日：2021-03-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Libin LIU ,  Mei LI ,  Shiming SHI ,  Li WANG

IPC: H01L27/32 ,  H01L51/56 ,  H01L51/52

Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, and a display device. The display substrate includes a display area and a non-display area located at a periphery of the display area, wherein the display area includes a plurality of pixel opening areas and a pixel spacing area located between the pixel opening areas; the display substrate further includes: a first electrode, wherein at least part of the first electrode is located in the pixel spacing area, an orthographic projection of the first electrode on a substrate of the display substrate does not overlap an orthographic projection of the pixel opening area on the substrate; and a second electrode electrically connected to the first electrode and located in the non-display area.