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:
Sep. 15, 2020
Filed:
Apr. 06, 2018
Omron Corporation, Kyoto, JP;
Yoshimasa Osumi, Kyoto, JP;
Masayuki Shinohara, Nagaokakyo, JP;
Yoshihiko Takagi, Kyoto, JP;
Norikazu Kitamura, Osaka, JP;
Jun Kishimoto, Ogaki, JP;
Omron Corporation, Kyoto, JP;
Abstract
A display device includes a light guide platehaving at least one incoming surface and a plurality of light sources (-to-) arranged to face any of the incoming surfaces. The light guide platehas a plurality of prismsthat is arrayed along each pattern in a plurality of patterns (to) displayed on one surfaceof the light guide plate and reflects light emitted from a light source corresponding to the pattern and entering the light guide plate through the incoming surface toward a direction within a prescribed range of angles with reference to a direction normal to the other surfaceof the light guide plate. Each prismis formed as a triangular pyramid groove in one surface of the light guide plate, and one of inclined surfaces of the triangular pyramid groove is formed as a reflective surfacethat reflects light emitted from a light source corresponding to a pattern along which the prism is arrayed and entering the light guide plate.