Title:
VIOLOGEN DERIVATIVE, ITS PRODUCTION PROCESS AND COLOR REWRITABLE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2005298753
Kind Code:
A
Abstract:
To provide an electrochromic material capable of producing a plurality of colors as a single material, to provide a process for producing the electrochromic material and to provide a color rewritable display device using the electrochromic material.
The viologen derivative has a structure represented by formula (I) wherein n denotes 2-50 and a counter anion X- denotes Cl-, Br-, I-, BF4-, ClO4- or CF3SO3-.
Inventors:
URANO HIKARI
KOBAYASHI YUJI
YOSHIDA TAKESHI
KOBAYASHI YUJI
YOSHIDA TAKESHI
Application Number:
JP2004120090A
Publication Date:
October 27, 2005
Filing Date:
April 15, 2004
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
G02F1/15; C07D213/22; C08G73/06; C09K9/02; G02F1/17; G09F9/30; (IPC1-7): C08G73/06; C07D213/22; C09K9/02; G02F1/15; G02F1/17; G09F9/30
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Akira Kurihara
Kawamata Sumio
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu