Title:
NEAR-INFRARED ABSORBING FILM AND OPTICAL FILTER FOR PLASMA DISPLAY PANEL USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/010501
Kind Code:
A1
Abstract:
A diimmonium salt compound having a relatively wide near-infrared absorption
wavelength range, while exhibiting good heat resistance and wet heat resistance
has been found. The compound is stable not only in a cured film layer formed by
a commonly used process but also in a coating resin layer using a binder resin having
a relatively low Tg wherein binder resins of a wide Tg range can be used. A near-infrared
absorbing film is created by using such a compound, and an optical filter for PDP
is produced by utilizing such a near-infrared absorbing film. Specifically
disclosed is a near-infrared absorbing film exhibiting excellent stability,
wherein a diimmonium salt compound represented by the formula (1) below is used.
Also specifically disclosed is an optical filter for PDP utilizing the near-infrared
absorbing film. (1) (In the formula (1), R1-R8 independently
represent a hydrogen atom or an optionally substituted aliphatic hydrocarbon
residue; and X- and Y- respectively represent a monovalent
anion different from each other.)
Inventors:
SEGAWA JUNICHI (JP)
AKUTA KENJI (JP)
UEHARA ATSUYUKI (JP)
KURATA TAKAAKI (JP)
AKUTA KENJI (JP)
UEHARA ATSUYUKI (JP)
KURATA TAKAAKI (JP)
Application Number:
PCT/JP2007/064139
Publication Date:
January 24, 2008
Filing Date:
July 18, 2007
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
SEGAWA JUNICHI (JP)
AKUTA KENJI (JP)
UEHARA ATSUYUKI (JP)
KURATA TAKAAKI (JP)
SEGAWA JUNICHI (JP)
AKUTA KENJI (JP)
UEHARA ATSUYUKI (JP)
KURATA TAKAAKI (JP)
International Classes:
G02B5/22; B32B27/18; C09K3/00; G09F9/00; H01J11/12; H01J11/44; C09B53/02
Domestic Patent References:
| WO2004048480A1 | 2004-06-10 |
Foreign References:
| JP2005325292A | 2005-11-24 | |||
| JP2005189740A | 2005-07-14 |
Attorney, Agent or Firm:
KAWAGUCHI, Yoshio et al. (Jochi Kioizaka Bldg.7-1 Kioi-ch, Chiyoda-ku Tokyo 94, JP)
Download PDF: