公开(公告)号：US12259616B1

公开(公告)日：2025-03-25

申请号：US18498001

申请日：2023-10-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Nicholas John Diorio, Jr. ,  Mengfei Wang ,  Yuge Huang ,  Kai-Han Chang ,  Lu Lu ,  Xiayu Feng

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

Abstract: A device includes a plurality of electrode layers. The device also includes a birefringent medium layer disposed between the plurality of electrode layers. The device also includes at least one alignment structure disposed at a surface of the birefringent medium layer. The birefringent medium layer includes liquid crystal molecules arranged in a plurality of helical twist structures having a helical axis. The plurality of electrode layers are configured to generate an electric field within the birefringent medium layer, and the liquid crystal molecules are aligned via the electric field to be titled with respect to the helical axis.

公开(公告)号：US20240363040A1

公开(公告)日：2024-10-31

申请号：US18640817

申请日：2024-04-19

Applicant: Meta Platforms Technologies, LLC

Inventor： Kai-Han Chang ,  Yu-Jen Wang

IPC: G09G3/00 ,  G02F1/29 ,  G06F3/01

CPC classification number: G09G3/001 ,  G02F1/292 ,  G06F3/013 ,  G09G2340/0407 ,  G09G2354/00

Abstract: Gaze data of a user is received. A display zone corresponding to the gaze data is identified. The display zone is a portion of a display pixel array. The display light generated by the display zone is modulated to shift an optical path of the display light within the display zone.