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:
Oct. 21, 2025
Filed:
May. 21, 2021
Dexerials Corporation, Tochigi, JP;
Tomu Takeda, Shimotsuke, JP;
DEXERIALS CORPORATION, Tochigi, JP;
Abstract
A polarizing plate has a wire grid structure including a transparent substrate and a plurality of protrusions formed on a first surface of the transparent substrate, extending in a first direction, and periodically arranged apart from each other at a pitch shorter than a wavelength of light in a use band, each of the plurality of protrusions includes a reflective layer, a dielectric laver, and an absorption layer in order from the transparent substrate, and a top surface and a side surface of each of the plurality of protrusions are coated with a protective film made of a dielectric material, the protective film has a cross-sectional area that gradually increases from the top surface side to the transparent substrate side when viewed from a cross section obtained by cutting a protrusion along a plane perpendicular to a surface of the transparent substrate and perpendicular to the first direction.