公开(公告)号：US20230320139A1

公开(公告)日：2023-10-05

申请号：US18021856

申请日：2020-09-21

Applicant: Applied Materials, Inc. ,  National Taiwan Universtiy

Inventor： Chung-chia CHEN ,  Wan-Yu LIN ,  Hyunsung BANG ,  Lisong XU ,  Gang YU ,  Byung-Sung KWAK ,  Robert Jan VISSER ,  Chung-Chih WU ,  Hoang Yan LIN ,  Guo-Dong SU ,  Wei-Kai LEE ,  Yi-Jiun CHEN ,  Ting-Sheng HSU ,  Po-Hsiang LIAO ,  Wei-Cheng LIN

IPC: H10K59/122 ,  H10K59/80 ,  H10K59/131

CPC classification number: H10K59/122 ,  H10K59/879 ,  H10K59/80524 ,  H10K59/131 ,  H10K2102/101

Abstract: Embodiments of the present disclosure generally relate to electroluminescent devices, such as organic light-emitting diodes, and displays including electroluminescent devices. In an embodiment is provided an electroluminescent device that includes a pixel defining layer, an organic emitting unit disposed over at least a portion of the pixel defining layer, and a filler layer disposed over at least a portion of the organic emitting unit, wherein a refractive index of the pixel defining layer is lower than a refractive index of the filler layer, and wherein the refractive index of the pixel defining layer is lower than a refractive index of one or more layers of the organic emitting unit. In another embodiment is provided a display device that includes a substrate, a thin film transistor formed on the substrate, an interconnection electrically coupled to the thin film transistor, and an electroluminescent device electrically coupled to the interconnection.

公开(公告)号：US20220059803A1

公开(公告)日：2022-02-24

申请号：US17398442

申请日：2021-08-10

Applicant: Applied Materials, Inc.

Inventor： Chung-Chih WU ,  Hoang Yan LIN ,  Guo-Dong SU ,  Zih-Rou CYUE ,  Li-Yu YU ,  Wei-Kai LEE ,  Guan-Yu CHEN ,  Chung-Chia CHEN ,  Wan-Yu LIN ,  Gang YU ,  Byung-Sung KWAK ,  Robert Jan VISSER ,  Chi-Jui CHANG

IPC: H01L51/52 ,  G09F9/33 ,  H04N13/302

Abstract: The present disclosure is generally related to 3D imaging capable OLED displays. A light field display comprises an array of 3D light field pixels, each of which comprises an array of corrugated OLED pixels, a metasurface layer disposed adjacent to the array of 3D light field pixels, and a plurality of median layers disposed between the metasurface layer and the corrugated OLED pixels. Each of the corrugated OLED pixels comprises primary or non-primary color subpixels, and produces a different view of an image through the median layers to the metasurface to form a 3D image. The corrugated OLED pixels combined with a cavity effect reduce a divergence of emitted light to enable effective beam direction manipulation by the metasurface. The metasurface having a higher refractive index and a smaller filling factor enables the deflection and direction of the emitted light from the corrugated OLED pixels to be well controlled.

公开(公告)号：US20220020951A1

公开(公告)日：2022-01-20

申请号：US17373939

申请日：2021-07-13

Applicant: Applied Materials, Inc.

Inventor： Chung-Chia CHEN ,  Wan-Yu LIN ,  Gang YU ,  Byung-Sung KWAK ,  Robert Jan VISSER ,  Hyunsung BANG ,  Lisong XU ,  Chung-Chih WU ,  Hoang Yan LIN ,  Guo-Dong SU ,  YI-Jiun CHEN ,  Wei-Kai LEE

IPC: H01L51/52 ,  G09G3/3225 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56

Abstract: Embodiments described herein relate to graded slope bottom reflective electrode layer structures for top-emitting organic light-emitting diode (OLED) display pixels. An EL device includes a pixel definition layer having a top surface, a bottom surface, and graded sidewalls interconnecting the top and bottom surfaces and a bottom reflective electrode layer disposed over the pixel definition layer. The bottom reflective electrode layer includes a planar electrode portion disposed over the bottom surface and a graded reflective portion disposed over the graded sidewalls, where the graded reflective portion has a concave profile. The EL device includes an organic layer disposed over the bottom reflective electrode layer and a top electrode disposed over the organic layer. Also described herein are methods for fabricating the EL device.