US 12,352,982 B2
Near-to-eye display device and wearable apparatus
Haitao Huang, Beijing (CN); Huili Wu, Beijing (CN); Feng Zhang, Beijing (CN); Zhao Cui, Beijing (CN); Yong Yu, Beijing (CN); Chuanxiang Xu, Beijing (CN); and Lina Jing, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/765,061
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 30, 2021, PCT No. PCT/CN2021/091575
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2022/227025, PCT Pub. Date Nov. 3, 2022.
Prior Publication US 2024/0053514 A1, Feb. 15, 2024
Int. Cl. G02B 3/00 (2006.01); G02B 27/01 (2006.01)
CPC G02B 3/0037 (2013.01) [G02B 27/0172 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A near-to-eye display device, comprising: a plurality of pixel islands and a plurality of micro-lenses in one-to-one correspondence with the plurality of pixel islands; wherein each pixel island is configured to emit light to a corresponding micro-lens so that the light reaches a predetermined viewing position after passing through the corresponding micro-lens; wherein the near-to-eye display device further comprises:
a plurality of super-lens units each comprising at least one super-lens; wherein the plurality of super-lens units are in one-to-one correspondence with the plurality of pixel islands; each super-lens unit is on a side of a corresponding pixel island proximal to the corresponding micro-lens, and an orthogonal projection of the super-lens unit on a plane where the corresponding pixel island is located covers the corresponding pixel island; the super-lens unit is configured to converge light, which is within a predetermined angle, emitted by the corresponding pixel island, so as to reduce a diffusion angle of the light emitted by the corresponding pixel island;
wherein each super-lens comprises a base substrate and a plurality of nano-pillars on the base substrate, both ends of each of the plurality of nano-pillars are a wide end and a narrow end, respectively, the plurality of nano-pillars comprise upright structures and inverted structures that are mixed and arranged alternately on the base substrate, the upright structures refer to the nano-pillars with wide ends proximal to the base substrate, and the inverted structures refer to the nano-pillars with narrow ends proximal to the base substrate.