Title:
LIGHT GUIDE PLATE, INPUT MODULE AND PORTABLE APPARATUS
Document Type and Number:
Japanese Patent JP2008235025
Kind Code:
A
Abstract:
To provide a light guide plate capable of improving the uniformity of the intensity of light used for illumination, and an input module and a portable apparatus using the light guide plate.
This light guide plate 16 is used for emitting light from an input part of a cellular phone 1. In the light guide plate 16, the outline of a light emitting region of the light guide plate 16, for instance, the outline of the light guide plate 16 itself when the light emitting region is the entire light guide plate 16 is polygonal, and light reception end surfaces 21 as light introduction parts are formed in a plurality of corner parts of the light emitting region or regions facing a plurality of sides thereof.
Inventors:
ADACHI YOSHIRO
Application Number:
JP2007073330A
Publication Date:
October 02, 2008
Filing Date:
March 20, 2007
Export Citation:
Assignee:
SUMITOMO ELEC PRINTED CIRCUITS
International Classes:
F21V8/00; H04M1/22; F21Y101/02
Domestic Patent References:
| JP2006323843A | 2006-11-30 | |||
| JP2003281917A | 2003-10-03 | |||
| JP2002133933A | 2002-05-10 | |||
| JP2004146360A | 2004-05-20 | |||
| JP2003162916A | 2003-06-06 | |||
| JP2004014255A | 2004-01-15 | |||
| JP2004144969A | 2004-05-20 | |||
| JP2004006081A | 2004-01-08 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai