The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 19, 2023
Filed:
Jul. 11, 2023
Jiaxing Uphoton Optoelectronics Technology Co., Ltd., Tongxiang, CN;
Guofang Sun, Tongxiang, CN;
Peng Chen, Tongxiang, CN;
Lei Sui, Tongxiang, CN;
Kehan Tian, Tongxiang, CN;
JIAXING UPHOTON OPTOELECTRONICS TECHNOLOGY CO., LTD., Tongxiang, CN;
Abstract
A diffraction optical waveguide, a grating structure, and a display device are disclosed. An arrangement period of a grating line of the grating structure is T and the grating line has a cross-sectional profile with a narrow top and a wide bottom. The cross-sectional profile includes five feature points, which respectively have coordinates (0, 0), (L2, H2), (L3, H3), (L4, H4), (L5, 0), and satisfy: 0.2T≤L2<L3<L4≤L5≤T; L3≤0.8T; L3−L2≥0.1T; L4≥0.8T; 0≤H2≤λ; 0.2λ≤H3≤λ; 0.6λ≤H4≤1.8λ; max(H2, H3)≤H4; −0.6λ≤H3−H2≤0.6λ, 0.6λ≤H3+H2≤1.8λ; 0.5λ/T≤H3/L3≤2λ/T, where λ is a wavelength. According to an embodiment of the present disclosure, the cross-sectional profile can be adjusted by controlling parameters of the feature points, the optical effect is improved and degrees of freedom in design and regulation are increased.