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AssigneesInternational Business Machines Corporation, International Manufacturing and Engineering Services Co., Ltd.
InventorsMasaki Ono, Fumitoshi Kiyooka, Yoshihiro Katsu, Mikio Suzuki, Takaharu Tsugane
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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.
A sidelight type light source device, comprising:
A sidelight type light source device, comprising:
An image display device, comprising:
A light guide plate, comprising:
Dependencies are inferred from the claim text.