FR2387271A1 - Colorants pleochroiques et dispositifs d'affichage electro-optique les utilisant - Google Patents
Colorants pleochroiques et dispositifs d'affichage electro-optique les utilisantInfo
- Publication number
- FR2387271A1 FR2387271A1 FR7810523A FR7810523A FR2387271A1 FR 2387271 A1 FR2387271 A1 FR 2387271A1 FR 7810523 A FR7810523 A FR 7810523A FR 7810523 A FR7810523 A FR 7810523A FR 2387271 A1 FR2387271 A1 FR 2387271A1
- Authority
- FR
- France
- Prior art keywords
- pleochroic
- electro
- display devices
- optical display
- colorants
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
- C09B1/16—Amino-anthraquinones
- C09B1/20—Preparation from starting materials already containing the anthracene nucleus
- C09B1/205—Dyes with an unsaturated C on the N atom attached to the nucleus
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
- C09K19/603—Anthroquinonic
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Liquid Crystal (AREA)
Abstract
La présente invention concerne le domaine des colorants pléochroiques, des substances liquides nématiques et de leurs applications. colorant pléochroïque selon l'invention est de formule C14 H6 O2 (-N = CHC6 H4 X)2 dans laquelle C14 H6 O 2 est un résidu d'anthraquinone, C6 H4 est un groupe p-phénylène et X est un groupe nitro, cyano, phényle, alkyle, alkoxy ou di-(alkyle inférieur)-amino; le dispositif électro-optique utilisant ce colorant comprend une cellule 8 contenant, entre les parois 12 et 14 rendues conductrices pour l'application d'un champ électrique, une substance cristalline liquide nématique contenant le colorant pléochroïque précité à l'état dissous. L'invention s'applique en particulier aux dispositifs électro-optiques d'affichage.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78648977A | 1977-04-11 | 1977-04-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2387271A1 true FR2387271A1 (fr) | 1978-11-10 |
FR2387271B1 FR2387271B1 (fr) | 1982-03-26 |
Family
ID=25138743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7810523A Granted FR2387271A1 (fr) | 1977-04-11 | 1978-04-10 | Colorants pleochroiques et dispositifs d'affichage electro-optique les utilisant |
Country Status (7)
Country | Link |
---|---|
US (1) | US4154746A (fr) |
JP (1) | JPS53126033A (fr) |
CH (1) | CH639113A5 (fr) |
DE (1) | DE2815335A1 (fr) |
FR (1) | FR2387271A1 (fr) |
GB (1) | GB1602662A (fr) |
IT (1) | IT1095570B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2426710A1 (fr) * | 1978-05-24 | 1979-12-21 | Bayer Ag | Derives anthraquinoniques, leur procede de production et leur application a la pigmentation de matieres organiques macromoleculaires |
EP0034832A1 (fr) * | 1980-02-26 | 1981-09-02 | Siemens Aktiengesellschaft | Cristal liquide avec un colorant anthraquinonique pléochroique incorporé et son application |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4702561A (en) * | 1977-04-11 | 1987-10-27 | Minnesota Mining And Manufacturing Company | Pleochroic dyes and electro-optical displays therewith |
DE2902177A1 (de) * | 1978-12-21 | 1980-07-17 | Bbc Brown Boveri & Cie | Fluessigkristallmischung |
US4232949A (en) * | 1979-02-23 | 1980-11-11 | Minnesota Mining And Manufacturing Company | Liquid crystal compositions containing pleochroic dye |
US4232950A (en) * | 1979-02-23 | 1980-11-11 | Minnesota Mining And Manufacturing Company | Liquid crystal compositions including pleochroic dye |
CH642393A5 (fr) | 1979-10-02 | 1984-04-13 | Ebauches Sa | Composition a base de cristal liquide pour dispositif electro-optique. |
JPS56100885A (en) * | 1980-01-17 | 1981-08-13 | Mitsui Toatsu Chem Inc | Composition for liquid crystal color display |
US4394070A (en) * | 1980-07-16 | 1983-07-19 | Minnesota Mining And Manufacturing Company | Helichromic compounds and displays |
DE3036895C2 (de) * | 1980-09-30 | 1985-07-11 | Merck Patent Gmbh, 6100 Darmstadt | Pleochroitischer Anthrachinon-Farbstoff und Herstellungsverfahren für einen solchen Farbstoff sowie seine Verwendung in einer Flüssigkristallmischung |
US4565424A (en) * | 1980-12-12 | 1986-01-21 | Minnesota Mining And Manufacturing Company | Asymmetric dichroic dye molecules having poly(arylazo) linking groups, a bis-substituted aryl thiazyl end group, and another end group |
EP0056492B1 (fr) * | 1981-01-10 | 1984-12-12 | BASF Aktiengesellschaft | Colorants pour mélanges de cristaux liquides |
US4514045A (en) * | 1981-06-22 | 1985-04-30 | Minnesota Mining And Manufacturing Company | Helichromic-smectic liquid crystal compositions and display cells |
US4448492A (en) * | 1982-12-23 | 1984-05-15 | Minnesota Mining And Manufacturing Company | Cycloalkyl-type isotropic dyes for liquid crystal display devices |
US4452511A (en) * | 1982-12-30 | 1984-06-05 | Minnesota Mining And Manufacturing Company | Substituted anthracene-type isotropic dyes for liquid crystal display devices |
US4530572A (en) * | 1982-12-30 | 1985-07-23 | Minnesota Mining And Manufacturing Company | Substituted anthraquinone-type isotropic dyes for liquid crystal display devices |
SE464264B (sv) * | 1984-02-24 | 1991-03-25 | Esab Ab | Optiskt filter foer svetsskyddsglas |
CN114989630A (zh) * | 2022-06-22 | 2022-09-02 | 江苏创拓新材料有限公司 | 负性二色性染料及其制备方法和显示器件 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2211154A5 (fr) * | 1972-12-19 | 1974-07-12 | Matsushita Electric Ind Co Ltd | |
FR2243980A1 (fr) * | 1973-09-19 | 1975-04-11 | Matsushita Electric Ind Co Ltd |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE627482C (de) * | 1930-10-21 | 1936-03-16 | Ig Farbenindustrie Ag | Verfahren zur Darstellung von 1, 4-Diaminoanthrachinon |
DE2521357A1 (de) * | 1975-05-14 | 1976-11-25 | Hoechst Ag | Anthrachinon-bis-amidine und verfahren zu ihrer herstellung |
-
1978
- 1978-04-10 IT IT22163/78A patent/IT1095570B/it active
- 1978-04-10 JP JP4137378A patent/JPS53126033A/ja active Granted
- 1978-04-10 DE DE19782815335 patent/DE2815335A1/de active Granted
- 1978-04-10 CH CH384078A patent/CH639113A5/de not_active IP Right Cessation
- 1978-04-10 FR FR7810523A patent/FR2387271A1/fr active Granted
- 1978-04-10 GB GB13989/78A patent/GB1602662A/en not_active Expired
- 1978-05-24 US US05/909,005 patent/US4154746A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2211154A5 (fr) * | 1972-12-19 | 1974-07-12 | Matsushita Electric Ind Co Ltd | |
FR2243980A1 (fr) * | 1973-09-19 | 1975-04-11 | Matsushita Electric Ind Co Ltd |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2426710A1 (fr) * | 1978-05-24 | 1979-12-21 | Bayer Ag | Derives anthraquinoniques, leur procede de production et leur application a la pigmentation de matieres organiques macromoleculaires |
EP0034832A1 (fr) * | 1980-02-26 | 1981-09-02 | Siemens Aktiengesellschaft | Cristal liquide avec un colorant anthraquinonique pléochroique incorporé et son application |
EP0034832B1 (fr) * | 1980-02-26 | 1983-09-21 | Siemens Aktiengesellschaft | Cristal liquide avec un colorant anthraquinonique pléochroique incorporé et son application |
Also Published As
Publication number | Publication date |
---|---|
DE2815335A1 (de) | 1978-10-12 |
JPS53126033A (en) | 1978-11-02 |
JPS6240394B2 (fr) | 1987-08-27 |
GB1602662A (en) | 1981-11-11 |
CH639113A5 (de) | 1983-10-31 |
IT1095570B (it) | 1985-08-10 |
US4154746A (en) | 1979-05-15 |
DE2815335C2 (fr) | 1988-02-04 |
IT7822163A0 (it) | 1978-04-10 |
FR2387271B1 (fr) | 1982-03-26 |
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