公开(公告)号：US20230408826A1

公开(公告)日：2023-12-21

申请号：US18362900

申请日：2023-07-31

Applicant: Meta Platforms Technologies, LLC

Inventor： Chulwoo OH ,  Agnes LEE ,  Linghui RAO

IPC: G02B27/01 ,  G02F1/1368 ,  G02F1/1335

CPC classification number: G02B27/0172 ,  G02F1/1368 ,  G02F1/133504 ,  G02B2027/0178 ,  G02F1/133528 ,  G02F2203/01 ,  G02F1/133514

Abstract: Disclosed herein are various near-eye display architectures, including kaleidoscopic waveguide display architectures, geometrical waveguide displays with improved pupil replication density, liquid crystal displays with improved brightness uniformity, tiled display panels for field of view expansion, and display modules including over-molded frame with integrated heat sink fins.

公开(公告)号：US20240192529A1

公开(公告)日：2024-06-13

申请号：US18063899

申请日：2022-12-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Chulwoo OH ,  Hsien-Hui CHENG ,  Xiaoze OU ,  Linghui RAO

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1343

CPC classification number: G02F1/133638 ,  G02F1/133531 ,  G02F1/133636 ,  G02F1/134363 ,  G02B27/0172

Abstract: A switchable waveplate includes a substrate, a first electrode layer on the substrate, an alignment layer on the first electrode layer and including alignment patterns formed thereon, a liquid crystal layer on the alignment layer, and a second electrode layer on the liquid crystal layer. The alignment patterns are determined based on angles of interest at a plurality of regions of the switchable waveplate. The liquid crystal layer includes liquid crystal molecules that are arranged according to the alignment patterns and are pre-tilted when no electric field is applied to the liquid crystal layer. The first electrode layer and the second electrode layer are configured to apply electric fields of different magnitudes to a plurality of zones of the switchable waveplate.

公开(公告)号：US20250118233A1

公开(公告)日：2025-04-10

申请号：US18895087

申请日：2024-09-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Yongmin PARK ,  Chul Kwon KANG ,  Samara Kate SYTSMA ,  Agnes LEE ,  Linghui RAO ,  Alexander KLEMENT ,  Hsin-Ying CHIU ,  William LA ,  Xiangzhi YU ,  Thomas Patrick McCARTHY ,  Maggie BARBAGALLO

IPC: G09G3/00 ,  G09G3/32 ,  G09G3/3225 ,  G09G3/34 ,  G09G3/36

Abstract: A near-eye display includes a display configured to display images, a memory device storing a compensation profile for compensating perceived brightness nonuniformity (e.g., brightness roll-off) of the display, and a display controller for controlling operations of the display. The compensation profile includes compensation values for modifying brightness in regions of the display to compensate the perceived brightness nonuniformity. The display controller is configured to control brightness of the display based on the compensation profile.

公开(公告)号：US20240274758A1

公开(公告)日：2024-08-15

申请号：US18421942

申请日：2024-01-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Shenglin YE ,  Xinyu ZHU ,  Xiangtong LI ,  Ruiqing MA ,  Yu-Jen WANG ,  Yun-Han LEE ,  Linghui RAO ,  Sascha HALLSTEIN

IPC: H01L33/50 ,  G02F1/13357 ,  G06F3/01 ,  H01L25/075 ,  H01L25/16 ,  H01L33/62

CPC classification number: H01L33/502 ,  H01L25/0753 ,  H01L25/167 ,  H01L33/62 ,  G02F1/133603 ,  G06F3/011

Abstract: A light-emitting diode (“LED”) package includes a package housing defining a space. The LED package includes a first LED disposed with the space defined by the package housing, and configured to emit a first light having a blue wavelength range. The blue wavelength range has a peak wavelength ranging from about 440 nm to about 480 nm. The LED package includes a second LED disposed within the space, and configured to emit a second light having a red wavelength range. The red wavelength range has a peak wavelength ranging from about 610 nm to about 680 nm. The LED package includes a phosphor filler filling the space and configured to absorb a portion of the first light to emit a third light having a green wavelength range. The green wavelength range has a peak wavelength ranging from about 510 nm to about 570 nm.