Patents Assigned to Worldvision Co., Ltd. - Justia Patents Search

Patents Assigned to Worldvision Co., Ltd.

Light guide plate, method and apparatus for producing same, and light source device and liquid crystal display utilizing same

Patent number: 7575359

Abstract: It is a light guide plate characterized by having a groove in a snaking pattern formed on a transparent plate made of acrylic or other materials with light transmitting characteristics. It substantially increases efficiency and its manufacturing cost can be greatly reduced.

Type: Grant

Filed: March 24, 2004

Date of Patent: August 18, 2009

Assignee: Worldvision Co., Ltd.

Inventor: Kazuhisa Saito