公开(公告)号：US11362310B2

公开(公告)日：2022-06-14

申请号：US16193056

申请日：2018-11-16

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Stephen R. Forrest ,  Yue Qu

IPC: H01L51/52 ,  H01L51/50

Abstract: A device including an organic light emitting diode and a dielectric layer is provided. The dielectric layer provides additional distance between a reflector and the organic emission region, leading to improved reduction in non-emissive modes and enhanced efficiency.

公开(公告)号：US20210020867A1

公开(公告)日：2021-01-21

申请号：US16925777

申请日：2020-07-10

Applicant: The Regents of the University of Michigan ,  The University of Southern California

Inventor： Stephen R. Forrest ,  Yue Qu ,  Haonan Zhao ,  Mark E. Thompson

IPC: H01L51/52 ,  H01L51/50 ,  C09K11/06 ,  H01L51/00

Abstract: An OLED device comprises a substrate, a first electrode positioned over the substrate, a second electrode positioned over the first electrode, at least one emissive layer positioned between the first and second electrodes in a first region of the OLED device, and a multilayer dielectric reflector stack, comprising a plurality of dielectric reflector layers positioned between the substrate and the first electrode, wherein the multilayer dielectric reflector stack is configured to form an optical cavity with the emissive layer having a Purcell Factor of at least 3.

公开(公告)号：US12200962B2

公开(公告)日：2025-01-14

申请号：US18496126

申请日：2023-10-27

Applicant: The Regents of the University of Michigan

Inventor： Yue Qu ,  Xiaheng Huang ,  Stephen R. Forrest

IPC: H10K50/854 ,  B29C41/02 ,  B29L31/34 ,  H10K50/11 ,  H10K71/00 ,  H10K71/80 ,  H10K77/10 ,  H10K101/00 ,  H10K102/00 ,  H10K101/10

Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 μm to 10 μm, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 μm to 100 μm, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.

公开(公告)号：US11825687B2

公开(公告)日：2023-11-21

申请号：US16925777

申请日：2020-07-10

Applicant: The Regents of the University of Michigan ,  The University of Southern California

Inventor： Stephen R. Forrest ,  Yue Qu ,  Haonan Zhao ,  Mark E. Thompson

IPC: H10K50/852 ,  C09K11/06 ,  H10K50/11 ,  H10K85/30 ,  H10K101/10 ,  H10K50/13 ,  H10K50/854 ,  H10K59/32 ,  H10K101/30 ,  H10K102/00 ,  H10K59/90

CPC classification number: H10K50/852 ,  C09K11/06 ,  H10K50/11 ,  H10K85/371 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/188 ,  H10K50/13 ,  H10K50/854 ,  H10K59/32 ,  H10K59/90 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2102/00 ,  H10K2102/351

Abstract: An OLED device comprises a substrate, a first electrode positioned over the substrate, a second electrode positioned over the first electrode, at least one emissive layer positioned between the first and second electrodes in a first region of the OLED device, and a multilayer dielectric reflector stack, comprising a plurality of dielectric reflector layers positioned between the substrate and the first electrode, wherein the multilayer dielectric reflector stack is configured to form an optical cavity with the emissive layer having a Purcell Factor of at least 3.

公开(公告)号：US11362311B2

公开(公告)日：2022-06-14

申请号：US16193105

申请日：2018-11-16

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Stephen R. Forrest ,  Yue Qu

IPC: H01L51/52 ,  G02B3/00 ,  H01L51/50

Abstract: Substrates are disclosed that include an embedded or partially-embedded microlens array. Devices are disclosed that include an OLED disposed over a substrate having an embedded or partially embedded micro lens array. Devices as disclosed herein redirect up to 100% of the light that otherwise would be confined in organic and electrode layers toward the substrate and thus provide improved light extraction and device efficiency.

公开(公告)号：US11349099B2

公开(公告)日：2022-05-31

申请号：US16752553

申请日：2020-01-24

Applicant: The Regents of the University of Michigan

Inventor： Yue Qu ,  Xiaheng Huang ,  Stephen R. Forrest

IPC: H01L51/00 ,  H01L51/56 ,  B29C41/02 ,  H01L51/52 ,  H01L51/50 ,  B29L31/34

Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 μm to 10 μm, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 μm to 100 μm, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.

公开(公告)号：US10038167B2

公开(公告)日：2018-07-31

申请号：US14991178

申请日：2016-01-08

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yue Qu ,  Michael Slootsky

IPC: H01L51/52 ,  H01L51/00

CPC classification number: H01L51/5275 ,  H01L51/0017 ,  H01L51/5212 ,  H01L2251/308

Abstract: An organic light emitting device is described. In certain embodiments, the device has a transparent substrate, a transparent grid layer disposed over the substrate, and an OLED disposed over the grid layer. The OLED can include an anode, a cathode, and at least one organic layer between the anode and cathode. A refractive index of the transparent grid layer is less than or equal to a refractive index of the transparent substrate. In certain embodiments, the at least one organic layer includes an electron transport layer having a thickness of at least 50 nm. In certain embodiments, the refractive index of the transparent grid layer is less than n=1.20, or in certain embodiments, less than n=1.05. Methods of manufacturing an organic light emitting device are also described.

公开(公告)号：US11832475B2

公开(公告)日：2023-11-28

申请号：US17826722

申请日：2022-05-27

Applicant: The Regents of the University of Michigan

Inventor： Yue Qu ,  Xiaheng Huang ,  Stephen R. Forrest

IPC: H10K50/854 ,  H10K50/11 ,  H10K77/10 ,  B29L31/34 ,  B29C41/02 ,  H10K101/10 ,  H10K102/00 ,  H10K71/00 ,  H10K71/80

CPC classification number: H10K50/854 ,  H10K50/11 ,  H10K71/00 ,  H10K71/80 ,  H10K77/111 ,  B29C41/02 ,  B29L2031/3475 ,  H10K71/821 ,  H10K2101/10 ,  H10K2102/311

Abstract: A method of fabricating a light emitting device comprises providing a mold having an unpolished surface with an arithmetic mean roughness Ra in a range from 0.1 μm to 10 μm, depositing a thin polymer film over the surface of the mold, wherein the film has a thickness in a range from 1 μm to 100 μm, positioning a light emitting body onto the thin polymer film, wherein the light emitting body includes an anode, a cathode, and a light emitting layer positioned between the anode and the cathode, and separating the thin polymer film with the light emitting body from the mold. A light emitting device is also described.

公开(公告)号：US20160204387A1

公开(公告)日：2016-07-14

申请号：US14991178

申请日：2016-01-08

Applicant: The Regents of the University of Michigan

Inventor： Stephen R. Forrest ,  Yue Qu ,  Michael Slootsky

IPC: H01L51/52 ,  H01L51/00 ,  H01L51/56 ,  H01L51/50

CPC classification number: H01L51/5275 ,  H01L51/0017 ,  H01L51/5212 ,  H01L2251/308

Abstract: An organic light emitting device is described. In certain embodiments, the device has a transparent substrate, a transparent grid layer disposed over the substrate, and an OLED disposed over the grid layer. The OLED can include an anode, a cathode, and at least one organic layer between the anode and cathode. A refractive index of the transparent grid layer is less than or equal to a refractive index of the transparent substrate. In certain embodiments, the at least one organic layer includes an electron transport layer having a thickness of at least 50 nm. In certain embodiments, the refractive index of the transparent grid layer is less than n=1.20, or in certain embodiments, less than n=1.05. Methods of manufacturing an organic light emitting device are also described.

Abstract translation: 描述有机发光器件。 在某些实施例中，该器件具有透明衬底，布置在衬底上的透明栅格层和布置在栅格层上的OLED。 OLED可以包括阳极，阴极和在阳极和阴极之间的至少一个有机层。 透明网格层的折射率小于或等于透明基板的折射率。 在某些实施方案中，至少一个有机层包括厚度至少为50nm的电子传输层。 在某些实施例中，透明网格层的折射率小于n = 1.20，或在某些实施例中小于n = 1.05。 还描述了制造有机发光器件的方法。