Illumination device
AssigneeSeiko Epson Corporation
InventorsTatsuaki Funamoto, Masahiro Uchida
Life of this patent
Estimating the term…
Abstract
A front-end surface illumination device is provided which is high in visibility when it is illuminated or not, low in power consumption, and compact. When a light beam emitted from an organic electroluminescence element formed on an end face of a light transmission plate reaches projecting portions, the light is emitted from the light transmission plate, and irradiated on an illuminated object. In this constitution, the light transmission plate has the function of projecting the light beam to the illuminated object, and transmitting the light beam reflected by the illuminated object with little diffusion.
Claims16
An illumination device, comprising:
- a light guide plate;
- and
- a light source provided adjacent to said light guide plate that illuminates an illuminated object by the light emitted from said light guide plate, said light source being an organic electroluminescence element formed on at least one surface of a light emission side main surface and a counter light emission side main surface of said light guide plate, wherein a light emitted from the organic electroluminescence element radiates the light guide plate.
An illumination device, comprising:
- a transparent light guide plate;
- and
- a light source provided on said light guide plate and illuminating an illuminated object by the light emitted from said light guide plate, said light source comprising an organic electroluminescence element and being provided on at least one of a plurality of end parts that extend along edges of main surfaces of said light guide plate so as to not completely cover any of the main surfaces.
A display apparatus, comprising:
- a display device;
- a light guide plate;
- and
- a light source provided adjacent to said light guide plate that illuminates the display device by light emitted from said light guide plate, said light source being an organic electroluminesence element formed on at least one surface of a light emission side main surface and a counter light emission side main surface of said light guide plate, light emitted from the organic electroluminescence element radiating the light guide plate.
A display apparatus, comprising:
- a display device;
- a transparent light guide plate;
- and
- a light source provided on said light guide plate that illuminates the display device by light emitted from said light guide plate, said light source including an organic electroluminesence element and being provided on at least one of a plurality of end parts that extend along edges of main surfaces of said light guide plate so as to not completely cover any of the main surfaces.
Dependencies are inferred from the claim text.