ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE
First Claim
1. An illumination device, comprising:
- a plurality of light sources;
a plurality of optical guides each for receiving light from at least one of the plurality of light sources and for causing a surface emission of the light;
a diffusing plate for diffusing the light emitted via each of the plurality of optical guides; and
a light-amount adjusting section being made from a transflective material and for causing a reduction in amount of light passing through the light-amount adjusting section, the light-amount adjusting section provided on the diffusing plate so as to cover a boundary between adjacent ones of the plurality of optical guides.
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Accused Products
Abstract
A backlight (illumination device) 2 of the present invention includes light sources 5, optical guides 7 and 17 for causing a surface emission of light from the light sources 5, and a diffusing plate 8 for diffusing the light emitted via the optical guides 7 and 17. The diffusing plate 8 faces light-emitting surfaces of the optical guides 7 and 17, and is provided with a light-amount adjusting section 11 made from a transflective material and for causing a reduction in amount of light transmitted therethrough. The light-amount adjusting section 11 is provided to correspond to a region which causes a bright line due to the light from the light sources 5, i.e., so that its orthogonal projection to a light-emitting region defined by the light-emitting surfaces covers a boundary between the optical guides 7 and 17. By the above, an illumination device providing high luminance uniformity can be obtained.
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Citations
16 Claims
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1. An illumination device, comprising:
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a plurality of light sources; a plurality of optical guides each for receiving light from at least one of the plurality of light sources and for causing a surface emission of the light; a diffusing plate for diffusing the light emitted via each of the plurality of optical guides; and a light-amount adjusting section being made from a transflective material and for causing a reduction in amount of light passing through the light-amount adjusting section, the light-amount adjusting section provided on the diffusing plate so as to cover a boundary between adjacent ones of the plurality of optical guides. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
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2. An illumination device, comprising:
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a plurality of light sources; a plurality of optical guides each for receiving light from at least one of the plurality of light source and for causing a surface emission of the light; a diffusing plate for diffusing the light emitted via each of the plurality of optical guides; and a light-amount adjusting section being made from a transflective material and for causing a reduction in amount of light passing through the light-amount adjusting section, the light-amount adjusting section provided on the diffusing plate so as to correspond to a region which causes a bright line due to light emitted from corresponding ones of the plurality of light sources. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification