Invention Grant
- Patent Title: Backlight unit and liquid crystal display device using the same
- Patent Title (中): 背光单元和使用其的液晶显示装置
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Application No.: US12684875Application Date: 2010-01-08
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Publication No.: US08111354B2Publication Date: 2012-02-07
- Inventor: Satoshi Ouchi , Koichi Sakita , Hajime Inoue , Seiji Murata
- Applicant: Satoshi Ouchi , Koichi Sakita , Hajime Inoue , Seiji Murata
- Applicant Address: JP Tokyo
- Assignee: Hitachi Consumer Electronics Co., Ltd.
- Current Assignee: Hitachi Consumer Electronics Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: JP2009-038094 20090220
- Main IPC: G02F1/1333
- IPC: G02F1/1333
Abstract:
A backlight unit having a LED light source includes a light guide plate partitioned in areas each having a tapered shape formed of a thick portion and a thin portion. The light guide plate is formed such that a thick portion and a thin portion are repeated at certain intervals, and the repeated thick portions and the repeated thin portions gradually decrease in thickness. The LED light source is attached to a lateral side of each thick portion. Grooves are formed in the light irradiation direction of the LED light source and in a direction perpendicularly intersecting the light irradiation direction. Each of the grooves is formed in an concave shape (V-shape or trapezoid-shape). There is a relation 0.2/30
Public/Granted literature
- US20100214508A1 Backlight Unit and Liquid Crystal Display Device Using the Same Public/Granted day:2010-08-26
Information query
IPC分类:
