JPS6474270A - Dichroic pigment for liquid crystal display - Google Patents

Dichroic pigment for liquid crystal display

Info

Publication number
JPS6474270A
JPS6474270A JP62229825A JP22982587A JPS6474270A JP S6474270 A JPS6474270 A JP S6474270A JP 62229825 A JP62229825 A JP 62229825A JP 22982587 A JP22982587 A JP 22982587A JP S6474270 A JPS6474270 A JP S6474270A
Authority
JP
Japan
Prior art keywords
liquid crystal
group
pigment
dichroic pigment
crystal display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP62229825A
Other languages
Japanese (ja)
Other versions
JPH0813929B2 (en
Inventor
Hirosuke Takuma
Shizuo Kuroda
Tsukasa Oyama
Hiroshi Aiga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP22982587A priority Critical patent/JPH0813929B2/en
Priority to US07/242,289 priority patent/US4883611A/en
Priority to KR1019880011714A priority patent/KR920003695B1/en
Priority to DE8888114956T priority patent/DE3880939T2/en
Priority to EP88114956A priority patent/EP0307866B1/en
Priority to CA000577340A priority patent/CA1290752C/en
Publication of JPS6474270A publication Critical patent/JPS6474270A/en
Priority to SG116893A priority patent/SG116893G/en
Priority to HK55/94A priority patent/HK5594A/en
Publication of JPH0813929B2 publication Critical patent/JPH0813929B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a blue dichroic pigment for liquid crystal displays, having a high dichroic ratio and excellent durability, represented by a specified structural formula. CONSTITUTION:This dichroic pigment for liquid display is represented by formula I (wherein R1 is hydrogen atom, a halogen atom, an alkyl group or an alkoxy group, R2 is a hydrogen atom, an alkyl group, an aryl group or an aralkyl group). The decahydronaphthyl group in formula I is preferably a trans isomer. This pigment is desirably used in a concentration of 0.1-5wt.% based on a liquid crystal.
JP22982587A 1987-09-16 1987-09-16 Dichroic dye for liquid crystal display Expired - Fee Related JPH0813929B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP22982587A JPH0813929B2 (en) 1987-09-16 1987-09-16 Dichroic dye for liquid crystal display
US07/242,289 US4883611A (en) 1987-09-16 1988-09-09 Dichroic coloring agents for liquid crystal displays
KR1019880011714A KR920003695B1 (en) 1987-09-16 1988-09-10 Dichroic coloring agents for liquid crystal displays
DE8888114956T DE3880939T2 (en) 1987-09-16 1988-09-13 DICHROITIC COLORANTS FOR LIQUID CRYSTAL DISPLAY DEVICES.
EP88114956A EP0307866B1 (en) 1987-09-16 1988-09-13 Dichroic coloring agents for liquid crystal displays
CA000577340A CA1290752C (en) 1987-09-16 1988-09-14 Dichroic coloring agents for liquid crystal displays
SG116893A SG116893G (en) 1987-09-16 1993-10-23 Dichroic coloring agents for liquid crystal displays
HK55/94A HK5594A (en) 1987-09-16 1994-01-20 Dichroic coloring agents for liquid crystal displays

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22982587A JPH0813929B2 (en) 1987-09-16 1987-09-16 Dichroic dye for liquid crystal display

Publications (2)

Publication Number Publication Date
JPS6474270A true JPS6474270A (en) 1989-03-20
JPH0813929B2 JPH0813929B2 (en) 1996-02-14

Family

ID=16898261

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22982587A Expired - Fee Related JPH0813929B2 (en) 1987-09-16 1987-09-16 Dichroic dye for liquid crystal display

Country Status (1)

Country Link
JP (1) JPH0813929B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000010952A1 (en) * 1998-08-24 2000-03-02 Dainippon Ink And Chemicals, Inc. Decahydronaphthalene derivative

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000010952A1 (en) * 1998-08-24 2000-03-02 Dainippon Ink And Chemicals, Inc. Decahydronaphthalene derivative
US6913797B1 (en) 1998-08-24 2005-07-05 Dainippon Ink And Chemicals, Inc. Decahydronaphthalene derivative

Also Published As

Publication number Publication date
JPH0813929B2 (en) 1996-02-14

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees