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. 19, 2003
Filed:
Aug. 01, 2001
Masaki Ono, Sagamihara, JP;
Fumitoshi Kiyooka, Yamato, JP;
Yoshihiro Katsu, Sagamihara, JP;
Mikio Suzuki, Fujisawa, JP;
Takaharu Tsugane, Tokyo, JP;
Other;
Abstract
A sidelight type light source device increases the quantity of light in a corner portion of a light guide plate at low cost while meeting a demand for picture frame narrowing. An incident surface receives light from a stick-shaped light source. The incident surface includes a first incident surface its center a pair or second incident surfaces at the ends of the first incident surface. The second incident surfaces are formed on a corner portion in a width direction of the light guide plate. The second incident surfaces are set back from the first incident surface taken as a reference. Accordingly, a light introducing route is defined between the second incident surface and rubber blocks at the ends of a fluorescent light source. Light from the fluorescent lamp passes along the light introducing route where it is directly incident on the second incident surfaces of the light guide plate.