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. 27, 2022
Filed:
Dec. 02, 2019
Semiconductor Energy Laboratory Co., Ltd., Atsugi, JP;
Shunpei Yamazaki, Tokyo, JP;
Ryo Hatsumi, Kanagawa, JP;
Tetsuji Ishitani, Kanagawa, JP;
Akio Yamashita, Kanagawa, JP;
SEMICONDUCTOR ENERGY LABORATORY CO., LTD., Kanagawa-ken, JP;
Abstract
A novel display device that is highly convenient, useful, or reliable is provided. The display device includes a light guide plate, a display panel, and an intermediate layer, and the light guide plate includes a first surface and a second surface. The first surface is irradiated with light, the second surface has a function of distributing light, the second surface is in contact with the intermediate layer, and the second surface has a first refractive index Nin a region in contact with the intermediate layer. The display panel faces the second surface, the display panel is in contact with the intermediate layer, and the display panel has a function of scattering the distributed light. The intermediate layer includes a region positioned between the second surface and the display panel, and the intermediate layer has a second refractive index Nin a region in contact with the second surface. The second refractive index Nis smaller than the first refractive index N