公开(公告)号：US12178062B2

公开(公告)日：2024-12-24

申请号：US17260563

申请日：2020-04-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Haiyan Sun ,  Meishan Xu ,  Xiaojin Zhang ,  Changho Lee ,  Dan Wang

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K59/122 ,  H10K101/30 ,  H10K101/40

Abstract: An OLED display substrate includes a base substrate with a display region arranged thereon. First, second and third sub-pixels are arranged in the display region. A first electrode layer, a pixel defining layer, a second electrode layer, and organic functional layers are arranged in the display region. The organic functional layers include first, second and third light-emitting layers. The first light-emitting layer covers the display region and is an integral structure. The second and third light-emitting layers are arranged on a side of the first light-emitting layer towards the second electrode layer. An orthographic projection of each sub light-emitting layer of the second and third light-emitting layers on the base substrate completely covers an orthographic projection of an opening of the pixel defining layer on the base substrate, and does not overlap with orthographic projections of other openings of the pixel defining layer on the base substrate.

公开(公告)号：US12178061B2

公开(公告)日：2024-12-24

申请号：US17600278

申请日：2020-11-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiaojin Zhang ,  Huiyun Yang ,  Changho Lee

IPC: H10K50/12 ,  H10K101/20 ,  H10K101/30

Abstract: The disclosure relates to an organic light emitting diode, a method for manufacturing the same, and a display panel. The organic light emitting diode includes: a first electrode; a second electrode disposed opposite to the first electrode; a light-emitting layer between the first electrode and the second electrode; the light-emitting layer includes a first light-emitting sub-layer and a second light-emitting sub-layer; the first light-emitting sub-layer includes a host material, a TADF sensitizer and a fluorescent guest material; the second light-emitting sub-layer includes the host material or includes the host material and the TADF sensitizer. The light-emitting layer of the organic light emitting diode of the present disclosure includes the first light-emitting sub-laver and the second light-emitting sub-layer, and thus the luminous efficiency of the red light-emitting device, the green light-emitting device, and the blue light-emitting device can be harmonized by effectively adjusting a thickness of the second light-emitting sub-layer.

公开(公告)号：US12262575B2

公开(公告)日：2025-03-25

申请号：US17312030

申请日：2020-08-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haiyan Sun ,  Xiaojin Zhang ,  Dan Wang ,  Changho Lee

IPC: H10K50/12 ,  H10K85/40 ,  H10K85/60

Abstract: Provided is a display substrate including a base substrate, an anode layer, a light-emitting layer, an electron diffusion layer, a hole block layer and a cathode layer which are sequentially stacked along a direction away from the base substrate, wherein a material of the electron diffusion layer comprises a first luminescent material, and a transport speed of holes generated by the anode layer in the electron diffusion layer is less than a transport speed of the holes in the light-emitting layer.

公开(公告)号：US12167617B2

公开(公告)日：2024-12-10

申请号：US17419307

申请日：2020-09-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Meishan Xu ,  Haiyan Sun ,  Dan Wang ,  Changho Lee

IPC: H01L51/50 ,  C09K11/06 ,  H10K50/11 ,  H10K50/15 ,  H10K50/17 ,  H10K85/60 ,  C09K11/07 ,  H10K101/30 ,  H10K101/40 ,  H10K102/00

Abstract: An organic light emitting device and a display apparatus are provided. The organic light emitting device includes an anode, a cathode and a light-emitting layer arranged between the anode and the cathode, wherein a first hole injection layer and a second hole injection layer are arranged between the anode and the light-emitting layer. The first hole injection layer and the second hole injection layer are different in structure, including one or more of the following: the first hole injection layer and the second hole injection layer are different in thickness, different in material structure, different in quantity of the material and number of types of the material, and different in energy level of the material.

公开(公告)号：US20220336765A1

公开(公告)日：2022-10-20

申请号：US17312030

申请日：2020-08-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Haiyan Sun ,  Xiaojin Zhang ,  Dan Wang ,  Changho Lee

IPC: H01L51/50 ,  H01L51/00

Abstract: Provided is a display substrate including a base substrate, an anode layer, a light-emitting layer, an electron diffusion layer, a hole block layer and a cathode layer which are sequentially stacked along a direction away from the base substrate, wherein a material of the electron diffusion layer comprises a first luminescent material, and a transport speed of holes generated by the anode layer in the electron diffusion layer is less than a transport speed of the holes in the light-emitting layer.