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.

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：US20220029135A1

公开(公告)日：2022-01-27

申请号：US17371305

申请日：2021-07-09

Applicant: Applied Materials, Inc.

Inventor： Chung-Chia CHEN ,  Byung-Sung KWAK ,  Robert Jan VISSER ,  Chung-Chih WU ,  Wei-Kai LEE ,  Po-Hsiang LIAO ,  Chang-Cheng LEE

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

Abstract: Embodiments described herein relate to spatial optical differentiators and layer architecture of adjacent functional layers disposed above or below organic light-emitting diode (OLED) display pixels. A functional unit for an electroluminescent (EL) device pixel includes a spatial optical differentiator disposed adjacent the EL device pixel. The spatial optical differentiator is configured to selectively reflect and transmit light based on an incident angle of light upon the functional unit. For top-emitting OLED, the functional unit includes a thin film encapsulation (TFE) stack disposed over the spatial optical differentiator. For bottom-emitting OLED, the functional unit includes the spatial optical differentiator disposed above at least one of a planar layer or an isolation layer. Also described herein are methods for fabricating the functional unit.

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.