公开(公告)号：US11263968B2

公开(公告)日：2022-03-01

申请号：US16644791

申请日：2019-06-06

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yanyan Wang ,  Lujiang Huangfu ,  Wenjing Tan

IPC: G09G3/3258 ,  H01L27/32

Abstract: A display substrate, a driving method thereof, and a display device. The display substrate includes: a first display sub-region including a plurality of first repeating regions each including a first pixel unit and a second pixel unit disposed adjacently, the first pixel unit including a first sub-pixel and a second sub-pixel, and the second pixel unit including a second sub-pixel and a third sub-pixel; and a second display sub-region including a plurality of second repeating regions each including a third pixel unit and a first transparent pixel, the third pixel unit including a first sub-pixel, a second sub-pixel and a third sub-pixel; the first transparent pixel is configured such that a pixel density of the second display sub-region is less than a pixel density of the first display sub-region, and a light transmittance of the second display sub-region is greater than a light transmittance of the first display sub-region.

公开(公告)号：US11196016B2

公开(公告)日：2021-12-07

申请号：US16632191

申请日：2018-11-20

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lujiang Huangfu ,  Xing Fan ,  Zheng Liu ,  Yan Fan ,  Liangjian Li ,  Hao Gao

IPC: H01L51/52 ,  H01L51/56

Abstract: A pixel structure includes a base substrate and a light emitting element on the base substrate. The light emitting element includes a reflective electrode, a light emitting layer on the reflective electrode, and a substantially transparent electrode on a side of the light emitting layer away from the reflective electrode. The reflective electrode has a reflective ridge configured to reflect light laterally transmitted through the light emitting layer to exit from a light emitting surface of the pixel structure. The reflective ridge has a first concave reflective sidewall extending from a peak of the reflective ridge to a base of the reflective ridge, and a second concave reflective sidewall extending from the peak of the reflective ridge to the base of the reflective ridge. The first concave reflective sidewall faces away from the second concave reflective sidewall.

公开(公告)号：US11195882B2

公开(公告)日：2021-12-07

申请号：US16633937

申请日：2019-01-11

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lujiang Huangfu

IPC: H01L27/32

Abstract: A pixel arrangement structure, a display substrate and a display device. The pixel arrangement structure includes: a plurality of first sub-pixels and a plurality of sub-pixel groups arranged in an array, wherein the plurality of first sub-pixels and the plurality of sub-pixel groups are alternately arranged along a first direction to form pixel rows, and are alternately arranged along a second direction intersected with the first direction to form pixel columns; each of the plurality of sub-pixel groups includes a second sub-pixel, a third sub-pixel and another second sub-pixel sequentially arranged along the first direction; in the same pixel row, a ratio of a distance between the geometric centers of each second sub-pixel and the adjacent third sub-pixel to a distance between the geometric centers of each first sub-pixel and the third sub-pixel in the adjacent sub-pixel group is greater than or equal to ¼ and less than ½.

公开(公告)号：US20210358379A1

公开(公告)日：2021-11-18

申请号：US16616522

申请日：2019-03-20

Applicant: BOE Technology Group Co., Ltd.

Inventor： Zhenzhen Li ,  Lujiang Huangfu ,  Shanshan Bai ,  Kuo Sun

IPC: G09G3/20

Abstract: A display substrate, a method for driving the same, a display device, and a high-precision metal mask are provided. The display area includes a first display sub-area in which pixels are distributed at a high density (e.g., a high resolution), and a second display sub-area in which pixels are distributed at a low density (e.g., a low resolution), and a transition display sub-area, with a distribution density of pixels (a resolution) between the distribution density of pixels in the first display sub-area and a distribution density of pixels in the second display sub-area, is arranged between the first display sub-area and the second display sub-area.

公开(公告)号：US20210335959A1

公开(公告)日：2021-10-28

申请号：US17366704

申请日：2021-07-02

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yipeng Chen ,  Li Wang ,  Lujiang Huangfu

IPC: H01L27/32 ,  G09G3/3291

Abstract: An organic light emitting diode display substrate, comprises: a base substrate, and a first data line, a driving thin film transistor and an energy storage capacitor, wherein the energy storage capacitor comprises a first capacitor plate and a second capacitor plate disposed opposite to each other, and the second capacitor plate is electrically connected to a gate of the driving thin film transistor, in a direction away from the base substrate, the first capacitor plate is disposed between the first data line and the second capacitor plate. The display substrate further comprises a power line and a voltage equalizing line which are electrically connected, the power line extends in a first direction which is substantially parallel to a direction in which the first data line extends, and the voltage equalizing line extends in a second direction. A method of manufacturing the display substrate and a display device are also provided.

公开(公告)号：US10886345B2

公开(公告)日：2021-01-05

申请号：US16425924

申请日：2019-05-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tao Sun ,  Lujiang Huangfu ,  Song Zhang ,  Ziyu Zhang

IPC: H01L27/32 ,  H01L51/00

Abstract: An OLED display panel includes: a substrate; a pixel defining layer disposed on the substrate and defining a pixel region and a non-pixel region outside the pixel region; a spacer layer disposed in the non-pixel region; and an organic light-emitting layer including: a first portion disposed in the pixel region, and a second portion disposed in the non-pixel region. A surface of at least one of the pixel defining layer or the spacer layer has a contact portion which is in contact with the organic light-emitting layer and which is rough.

公开(公告)号：US10274654B2

公开(公告)日：2019-04-30

申请号：US15536347

申请日：2016-05-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaodan Jin ,  Lujiang Huangfu ,  Yinan Liang

IPC: G09F9/302 ,  G02B5/20 ,  G02F1/136 ,  G02F1/1362 ,  G09F9/33 ,  H01L27/32

Abstract: A pixel arrangement structure, a display panel and a display device are provided. The pixel arrangement structure includes a plurality of repeating units, each repeating unit includes one first sub-pixel, one second sub pixel and two third sub-pixels; the four sub-pixels of each repeating unit constitute two pixels, with the first sub-pixel and the second sub-pixel being shared by the two pixels; in a first direction of the pixel array, the sub-pixel density is equal to 1.5 times of the pixel density, in a second direction of the pixel array, the sub-pixel density is equal to 1.5 times of the pixel density; wherein, the first direction and the second direction are different directions.

公开(公告)号：US10190207B2

公开(公告)日：2019-01-29

申请号：US15322790

申请日：2016-03-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yinan Liang ,  Lujiang Huangfu

IPC: C23C14/24 ,  C23C14/04 ,  C23C14/54 ,  H01L51/00

Abstract: An evaporation method includes: evaporating evaporation material and forming evaporation material particles towards one or more transfer substrates by means of an evaporation source, so as to form an intermediate material layer on a surface of the transfer substrate; heating the one or more transfer substrates to evaporate the intermediate material layer located on the transfer substrate towards a target substrate, a temperature of the heated transfer substrate being less than a temperature of the evaporation source. There is further disclosed an evaporation device.

公开(公告)号：US10050213B2

公开(公告)日：2018-08-14

申请号：US14415005

申请日：2014-05-30

Applicant: BOE Technology Group Co., Ltd. ,  JiLin OLED Material Tech. Co., LTD.

Inventor： Lifei Ma ,  Xiaoyu Ma ,  Hui Wang ,  Lujiang Huangfu

IPC: H01L51/54 ,  C09K11/06 ,  H01L51/00 ,  C07D401/14 ,  C07D403/14 ,  H05B33/20 ,  H01L51/50

Abstract: The invention provides a bicarbazole derivative represented by formula (I), wherein A is a group represented by formula (II), and wherein X, Y and Z represent a carbon atom or a nitrogen atom, and at least one of X, Y and Z represent a nitrogen atom. The invention further provides a process for preparing the compound. The invention further provides an organic electroluminescent device comprising the compound. This compound can be used as a phosphorescence host material, a hole-injecting material or a hole-transporting material in an organic electroluminescent device.

公开(公告)号：US09953566B2

公开(公告)日：2018-04-24

申请号：US14762014

申请日：2014-08-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Lujiang Huangfu ,  Liang Sun ,  Zhanjie Ma

IPC: G09G5/10 ,  G09G3/3225 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/3225 ,  G09G3/3233 ,  G09G3/3659 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0223 ,  G09G2320/0626

Abstract: The present invention discloses a pixel circuit and a driving method thereof, and a display device. The pixel circuit comprises a reference voltage set up sub-circuit, a charging sub-circuit and a driving sub-circuit. The reference voltage set up sub-circuit and the charging sub-circuit are connected with the driving sub-circuit respectively, and the reference voltage set up sub-circuit being used for, within a first period of time, providing for the driving sub-circuit, the charging sub-circuit being used for, within a second period of time, providing for the driving sub-circuit a data signal voltage. The driving sub-circuit comprises a driving transistor for driving the light emitting device to emit light, and a first capacitor for maintaining the reference voltage and the data signal voltage. Within a third period of time, the first capacitor discharges so that the driving transistor is turned on to drive the light emitting device to emit light.