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:
May. 12, 1987
Filed:
Aug. 07, 1986
Hiroshi Ito, Katsuta, JP;
Masaru Kugo, Ogawa, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Automotive Engineering Co., Ltd., Ibaraki, JP;
Abstract
A reflecting plate is disposed in such a manner as to surround a fluorescent tube in a U shape in its axial direction. A light diffusion-transmission plate is disposed in such a manner as to bridge over the open end portions of the U-shaped reflecting plate and to extend in the axial direction of the fluorescent tube. A liquid crystal display element is disposed on this light diffusion-transmission plate. In the liquid crystal display device having the construction described above, the present invention disposes shading means for increasing the quantity of light near the filament portions and limiting the quantity of light on the light emission surface inside the fluorescent tube.