Title:
バックライトユニットおよび液晶表示装置
Document Type and Number:
Japanese Patent JP3898217
Kind Code:
B1
Abstract:
The backlight unit includes a light guide that receives light emitted from a LED through its end and reflects the light by a prism-shaped reflective groove to thereby output parallel light through an output surface, and a microlens array substrate that receives the parallel light output from the light guide through its side surface and reflects the light by a prism portion to thereby output the light to a liquid crystal display panel through a microlens array. The prism portion has a reflective groove that lies perpendicular to the propagation direction of the parallel light entering through the side surface. The microlens lies perpendicular to the reflective groove. A low refractive index layer is placed to the side of the microlens array.
Inventors:
Nobuhiro Umebayashi
Application Number:
JP2006281473A
Publication Date:
March 28, 2007
Filing Date:
October 16, 2006
Export Citation:
Assignee:
Hitachi Maxell Co., Ltd.
International Classes:
G02F1/13357
Domestic Patent References:
| JP2005347208A | ||||
| JP2005071610A | ||||
| JP2006049286A | ||||
| JP2006323328A | ||||
| JP2005266370A | ||||
| JP2004311388A | ||||
| JP2004087309A | ||||
| JP2003262736A | ||||
| JP2003229011A |
Foreign References:
| WO2006098029A1 |
Attorney, Agent or Firm:
Ken Ieiri