Title:
LIGHT GUIDE PLATE, METHOD OF MANUFACTURING THE SAME, BACK LIGHT, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2005/124228
Kind Code:
A1
Abstract:
A light guide plate, a method of manufacturing the light guide plate, a back light, and a liquid crystal display device. The light guide plate (210) easily manufacturable at low cost is formed by combining a first small compartment (211) with a second small compartment (212) formed in a plate-like right-angled triangular shape in side view. The first small compartment (211) is formed of a transparent material. The second small compartment (212) is formed by adding scattered particles to a transparent material, and formed integrally with the first small compartment (211). A light source (220) faces the surface of the light guide plate (210) to which only the first small compartment (211) is exposed. A light coming from the light source (220) advances from the first small compartment (211) to the second small compartment (212), is scattered by the scattered particles, and then is discharged from a discharge surface (an upper surface in Fig. 2).
Inventors:
YAMAMOTO MASAO (JP)
Application Number:
PCT/JP2005/011882
Publication Date:
December 29, 2005
Filing Date:
June 22, 2005
Export Citation:
Assignee:
SCALAR CORP (JP)
YAMAMOTO MASAO (JP)
YAMAMOTO MASAO (JP)
International Classes:
F21V8/00; G02B6/00; (IPC1-7): F21V8/00; G02B6/00; G02F1/3357
Foreign References:
| JP2002296591A | 2002-10-09 | |||
| JPH09269416A | 1997-10-14 | |||
| JPH0949928A | 1997-02-18 | |||
| JPH07134298A | 1995-05-23 | |||
| JPH0429290A | 1992-01-31 | |||
| JPH06324330A | 1994-11-25 |
Attorney, Agent or Firm:
Muramatsu, Yoshihito (6th Floor 29-10, Shiba 2-chom, Minato-ku Tokyo, JP)
Download PDF:
Previous Patent: METHOD USED TO MODIFY THE PHOTOMETRICS OF A PRISMATIC TRANSPARENT DIFFUSER
Next Patent: PLANAR LIGHTING APPARATUS
Next Patent: PLANAR LIGHTING APPARATUS