US 7,321,407 B2
Reflector and liquid crystal display
Katsumasa Yoshii, Fukushima-ken (Japan)
Assigned to Alps Electric Co., Ltd., Tokyo (Japan)
Filed on Oct. 02, 2003, as Appl. No. 10/677,875.
Claims priority of application No. 2002-298596 (JP), filed on Oct. 11, 2002.
Prior Publication US 2004/0070710 A1, Apr. 15, 2004
Int. Cl. G02F 1/1335 (2006.01)
U.S. Cl. 349—113 46 Claims
OG exemplary drawing
 
1. A reflector comprising:
a reflection substrate; and
an optical diffusion layer deposited on the reflection substrate so as to flatten the surface thereof,
wherein the reflection substrate is provided with a plurality of reflection inclined planes continuously formed on a surface thereof with a stripe geometry in plan view and a surface of each refection inclined plane is provided with concave portions having a depth within a range of 0.3 μm to 3 μm irregularly, adjacent concave portions arranged irregularly at a pitch between 1 μm and 30 μm, and
wherein the optical diffusion layer is a transparent resin or a transparent adhesive having fine particles dispersed therein, and a thickness of a thickest portion of the optical diffusion layer is in the range of between 30 μm and 200 μm.