| US 7,614,773 B2 | ||
| Light guide plate and liquid crystal display device having the same | ||
| Hee Dong Kim, Seoul (Korea, Republic of); Jin Ha Kim, Gyunggi-Do (Korea, Republic of); and Jin Jong Kim, Gyunggi-Do (Korea, Republic of) | ||
| Assigned to Samsung Electro-Mechanics Co., Ltd., Gyunggi-Do (Korea, Republic of) | ||
| Filed on Apr. 04, 2007, as Appl. No. 11/730,802. | ||
| Claims priority of application No. 10-2006-0030570 (KR), filed on Apr. 04, 2006. | ||
| Prior Publication US 2008/0031006 A1, Feb. 07, 2008 | ||
| Int. Cl. F21V 7/04 (2006.01) | ||
| U.S. Cl. 362—606 [362/607; 362/617; 362/620] | 13 Claims |
| 1. A light guide plate disposed upstream of a liquid crystal panel to refract light supplied through an edge thereof, toward
the liquid crystal panel, the light guide plate comprising:
a plate body disposed at a side of a light source for supplying light when a supply voltage is applied;
a plurality of pyramidal diffusing elements arrayed in a predetermined pattern on a surface of the plate body,
wherein each of the diffusing elements is rotated clockwise or counterclockwise about an axis extending through a vertex of
the diffusing element perpendicularly to the surface of the plate body so that an edge of the diffusing element facing a reference
line connecting a central point of the light source to a central point of the plate body is angled 10° to 35° about the reference
line,
wherein the diffusing elements are rotated in opposite directions along the reference line and arrayed symmetrically about
the reference line.
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