| US 7,593,070 B2 | ||
| Optical unit and LCD device using the optical unit | ||
| Toshihisa Ogawa, Tokyo (Japan) | ||
| Assigned to NEC LCD Technologies, Ltd., Kawasaki, Kanagawa (Japan) | ||
| Filed on Nov. 16, 2007, as Appl. No. 11/984,403. | ||
| Application 11/984403 is a division of application No. 10/376637, filed on Mar. 03, 2003, granted, now 7,301,588. | ||
| Claims priority of application No. 2002-057275 (JP), filed on Mar. 04, 2002. | ||
| Prior Publication US 2008/0174717 A1, Jul. 24, 2008 | ||
| Int. Cl. G02F 1/1333 (2006.01) | ||
| U.S. Cl. 349—58 [349/65] | 12 Claims |
| 1. An optical unit, comprising:
a frame surrounding an opening, the frame having a first surface and a second surface, placed directly across from the first
surface of the frame;
a light conductive plate positioned in the opening of the frame, the light conductive plate having a first surface adjacent
the first surface of the frame and a second surface adjacent the second surface of the frame;
a diffusion sheet fastened to the first surface of the frame in a manner to cover at least a portion of the first surface
of the frame and to cover the first surface of the light conductive plate; and
a light reflective sheet fastened to the second surface of the frame in a manner to cover at least a portion of the second
surface of the frame and to cover the second surface of the light conductive plate,
wherein the diffusion sheet and the light reflective sheet cooperate to fasten the light conductive plate within the frame.
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