| US 7,517,129 B2 | ||
| Light guide plate, backlight assembly having the same, display apparatus having the same and method of manufacturing the same | ||
| Jin-Sung Choi, Yongin-si (Korea, Republic of); Jheen-Hyeok Park, Seongnam-si (Korea, Republic of); Byung-Yun Joo, Goyang-si (Korea, Republic of); Ju-Hwa Ha, Seoul (Korea, Republic of); and Jung-Wook Paek, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of) | ||
| Filed on Apr. 12, 2006, as Appl. No. 11/403,131. | ||
| Claims priority of application No. 10-2005-0031549 (KR), filed on Apr. 15, 2005. | ||
| Prior Publication US 2006/0245061 A1, Nov. 02, 2006 | ||
| Int. Cl. F21V 7/04 (2006.01); G02B 6/10 (2006.01) | ||
| U.S. Cl. 362—617 [362/332; 362/619; 385/131] | 41 Claims |
| 1. A light guide plate comprising:
a first optical member having a first refractive index against a first light portion of a light and a second refractive index
against a second light portion of the light, the first optical member having a first light path-changing portion; and
a second optical member having the first refractive index against the first and second light portions, the second optical
member formed on the first optical member, the second optical member having a second light path-changing portion corresponding
to the first light path-changing portion and protruded towards the first optical member;
wherein the first light portion of the light is not refracted or reflected from a boundary between the first and second optical
members, and the second portion of the light is refracted or reflected from the boundary between the first and second optical
members by a difference between the first refractive index and the second refractive index.
|