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:
Nov. 19, 2024
Filed:
May. 16, 2023
Japan Display Inc., Tokyo, JP;
Takayuki Kato, Tokyo, JP;
Shinichiro Tanaka, Tokyo, JP;
Japan Display Inc., Tokyo, JP;
Abstract
A head-up display includes a light source, a liquid crystal panel configured to transmit light from the light source and project an image, and a prism sheet configured to refract the light transmitted through the liquid crystal panel. The prism sheet includes a sheet surface parallel to a plate surface of the liquid crystal panel, and a plurality of prisms facing the plate surface of the liquid crystal panel on a side opposite to the sheet surface and arranged in parallel, the prisms are each formed in an angular shape in cross-section by a first prism surface and a second prism surface, the first prism surface being inclined with respect to the sheet surface, the second prism surface being inclined with respect to the sheet surface and making a larger angle with the sheet surface than the first prism surface, and an angle between the first prism surface and the sheet surface is 35° or larger.