Title:
METHOD FOR MANUFACTURE OF LIGHT GUIDE PLATE
Document Type and Number:
Japanese Patent JP2008296587
Kind Code:
A
Abstract:
To provide a method for manufacture of a light guide plate having good transferability of a mold and excellent in the dimensional stability in a constant temperature/humidity circumstance.
The production method for the light guide plate comprises: using an alicyclic structure-containing polymer; performing an oxygen-removing treatment to the polymer; and then injection-molding the polymer in a mold cavity at an injection rate of 250 cm3/s. The light guide plate has a minute uneven pattern on at least either the light emission surface or light reflection surface of the plate. The minute uneven pattern has a triangle prism form whose inclined surface has an arithmetic average roughness (Ra) of 150 nm.
Inventors:
HAYASHI MASAHIKO
TSUKADA KEISUKE
OBUCHI KAZUYUKI
TSUKADA KEISUKE
OBUCHI KAZUYUKI
Application Number:
JP2008181348A
Publication Date:
December 11, 2008
Filing Date:
July 11, 2008
Export Citation:
Assignee:
NIPPON ZEON CO
International Classes:
B29C45/00; B29C45/37; F21V8/00; B29L11/00; F21Y103/00
Domestic Patent References:
| JP2002144388A | 2002-05-21 | |||
| JP2000171640A | 2000-06-23 | |||
| JP2001239556A | 2001-09-04 |
Attorney, Agent or Firm:
Hiroaki Sakai