US 12,345,922 B2
Grating structure, preparation method thereof and display device
Duohui Li, Beijing (CN); Hong Chen, Beijing (CN); Mengya Song, Beijing (CN); Dongliang Zhang, Beijing (CN); Xiao Zhang, Beijing (CN); Zheng Duan, Beijing (CN); Kang Guo, Beijing (CN); and Xin Gu, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 18/028,936
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 27, 2022, PCT No. PCT/CN2022/095703
§ 371(c)(1), (2) Date Mar. 28, 2023,
PCT Pub. No. WO2023/226018, PCT Pub. Date Nov. 30, 2023.
Prior Publication US 2024/0361531 A1, Oct. 31, 2024
Int. Cl. G02B 6/34 (2006.01); B29C 33/38 (2006.01); B29C 33/40 (2006.01); B29C 59/02 (2006.01); G02B 27/01 (2006.01); B29L 11/00 (2006.01)
CPC G02B 6/34 (2013.01) [B29C 33/3842 (2013.01); B29C 33/405 (2013.01); B29C 59/022 (2013.01); B29C 59/026 (2013.01); G02B 27/0172 (2013.01); B29K 2821/00 (2013.01); B29K 2995/0094 (2013.01); B29L 2011/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for preparing a grating structure, comprising:
forming a plurality of first convex structures arranged in a first direction; and
forming a first rubber material at least covering the plurality of first convex structures, and forming the grating structure comprising a plurality of second convex structures by using convex structures comprising the plurality of first convex structures and the first rubber material, wherein a surface of the first rubber material facing away from the first convex structures is a flat surface; and the convex structures comprising the plurality of first convex structures and the first rubber material are in one-to-one correspondence with the plurality of second convex structures, shapes of cross sections of the plurality of second convex structures in the first direction are triangles, and the plurality of second convex structures have at least one inclined flat surface.