Surface light emission device, method of manufacturing the same, and liquid crystal display device
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United States of America Patent
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Nov 25, 2003
Grant Date -
Aug 22, 2002
app pub date -
Dec 11, 2001
filing date -
Dec 14, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A surface light emitting device includes a light source and a light introduction plate having a structure for causing the light from the light source to be incident from a side end surface and to outgo from a light outgoing surface. Grooves are formed in a stripe shape on an opposing surface opposite to the light outgoing surface, and the grooves are formed deeper as they have a longer distance from the light source, and the difference between the depths of adjacent grooves is made larger as they have a distance longer from the light source. A method of manufacturing the surface light emitting device and a liquid crystal device including the surface light emitting device are also disclosed. With this arrangement, the surface light emitting device can obtain a sufficiently quantity of light at any position and the liquid crystal device can display an image in uniform brightness.
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