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:
Aug. 13, 1991
Filed:
Apr. 11, 1990
Akira Tanaka, Kawasaki, JP;
Shinpei Nagatani, Kawasaki, JP;
Masahiro Tomatsu, Yokohama, JP;
Kazumasa Kaiwa, Yokohama, JP;
Kazuaki Yamagishi, Yokohama, JP;
Katsumi Yashiro, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Fujitsu Kasei Ltd., Yokohama, JP;
Abstract
A backlight having a reflection plate, a diffusion plate, a transparent light guide plate held between the diffusion plate and the reflection plate and having a reflection and diffusion surface adjacent to the reflection plate and a recessed light emitting surface adjacent to the diffusion plate, so that a space is defined between the recessed light emitting surface and the bottom surface of the diffusion plate adjacent thereto, a holder connected to the diffusion plate to define accommodation spaces between the opposite ends of the transparent light guide plate and the holder, and line light sources located in the accommodation spaces.