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.:

US 8491144 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 23, 2013

Filed:

Mar. 24, 2011
Applicants:

Tomoharu Nakamura, Tokyo, JP;

Shingo Ohkawa, Saitama, JP;

Satoru Murata, Kanagawa, JP;

Inventors:

Tomoharu Nakamura, Tokyo, JP;

Shingo Ohkawa, Saitama, JP;

Satoru Murata, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1347 (2006.01);
U.S. Cl.
CPC ...
Abstract

A light emitting device includes: a light guide unit; a light source; a light control member having a light incidence face on a back face, a light outgoing face on a surface and a light dispersion structure, and disposed so as to cover the gap on the neighboring two light guide plates; and a diffusion member disposed above the light guide unit and the light control member. The light dispersion structure includes a plurality of grooves extending in a direction along the side end face of the light guide plate and having curved wall faces, and emits leakage light from the gap in outgoing light of the light emitting element to a region wider than a region opposed to the gap, in the diffusion member.


Find Patent Forward Citations

Nakamura, Tomoharu. (2013). Light emitting device and display device using the same (U.S. Patent No. 8491144). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8491144

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