Patents Assigned to Mitsubisshi Chemical Corporation - Justia Patents Search

Patents Assigned to Mitsubisshi Chemical Corporation

Light guide pipe having elongate roughened protrusions and/or roughened concaves, planar light source unit having a broad viewing angle characteristic, and liquid crystal display device

Patent number: 6425673

Abstract: Light guide pipe. Planar light source unit.

Type: Grant

Filed: September 20, 2000

Date of Patent: July 30, 2002

Assignees: Mitsubisshi Chemical Corporation, Yukadenshi Co., Ltd.

Inventors: Yoshinori Suga, Masanobu Miwa