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US 2005/0030732 A1Published application
Illumination apparatus
AssigneeSemiconductor Energy Laboratory Co., Ltd., a Japan corporation
InventorsHajime Kimura, Rumo Satake
Life of this patent
Estimating the term…
Abstract
A point light source is converted into a plane light source having a satisfactory uniformity. The point light source is converted into a line light source by means of a linear light guiding plate, and further into the plane light source by means of a plane-like light guiding plate. Light from the point light source is reflected at a lamp reflector to be incident on at least two side surfaces of the plane-like light guiding plate.
Claims27
1-32. (Cancelled)
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- and
- a point light source facing the first side surface.
1 more element
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- a point light source facing the first side surface;
- and
- a reflecting plate provided under the light-guiding plate.
2 more elements
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- a point light source facing the first side surface;
- and
- a lamp reflector for reflecting a light emitted from the point light source.
2 more elements
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- a plurality of ink dots provided at the bottom surface of the light-guiding plate and;
- a point light source facing the first side surface.
1 more element
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- a point light source facing the first side surface;
- a reflecting plate provided under the light-guiding plate;
- and
- a lamp reflector for reflecting a light emitted from the point light source.
3 more elements
A display device comprising:
- an illumination apparatus for illuminating an image display plane of the display device, the illumination apparatus comprising:
- a light-guiding plate having an upper surface, a bottom surface opposed to the upper surface, a first side surface, a second side surface, and a third side surface, wherein the first side surface is not perpendicular to the second side surface and the third side surface;
- and
- a plurality of ink dots provided at the bottom surface of the light-guiding plate;
- a point light source facing the first side surface;
- and
- a lamp reflector for reflecting a light emitted from the point light source.
4 more elements
Dependencies are inferred from the claim text.