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:
Apr. 13, 2021
Filed:
Feb. 12, 2018
Boe Technology Group Co., Ltd., Beijing, CN;
Jifeng Tan, Beijing, CN;
Xianqin Meng, Beijing, CN;
Yafeng Yang, Beijing, CN;
Xiandong Meng, Beijing, CN;
Wei Wang, Beijing, CN;
Jian Gao, Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
Abstract
A filter structure, a display substrate, a display panel and a display device are provided. The filter structure includes a first refractive index match layer, a waveguide layer, a second refractive index match layer and a grating layer, that are stacked, the waveguide layer is located between the first refractive index match layer and the second refractive index match layer, the second refractive index match layer is located between the waveguide layer () and the grating layer, and refractive index of the first refractive index match layer and refractive index of the second refractive index match layer both are smaller than refractive index of the waveguide layer.