FR2220804B1 - - Google Patents
Info
- Publication number
- FR2220804B1 FR2220804B1 FR7407137A FR7407137A FR2220804B1 FR 2220804 B1 FR2220804 B1 FR 2220804B1 FR 7407137 A FR7407137 A FR 7407137A FR 7407137 A FR7407137 A FR 7407137A FR 2220804 B1 FR2220804 B1 FR 2220804B1
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13731—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition
- G02F1/13737—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition in liquid crystals doped with a pleochroic dye
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- 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
- C09K19/58—Dopants or charge transfer agents
- C09K19/586—Optically active dopants; chiral dopants
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal Substances (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00339368A US3833287A (en) | 1973-03-08 | 1973-03-08 | Guest-host liquid crystal device |
US00419613A US3837730A (en) | 1973-11-28 | 1973-11-28 | Matrix-addressed liquid crystal display |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2220804A1 FR2220804A1 (en) | 1974-10-04 |
FR2220804B1 true FR2220804B1 (en) | 1976-10-08 |
Family
ID=26991601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7407137A Expired FR2220804B1 (en) | 1973-03-08 | 1974-03-01 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS6222153B2 (en) |
DE (1) | DE2410557C2 (en) |
FR (1) | FR2220804B1 (en) |
GB (1) | GB1464791A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638924B2 (en) * | 1973-12-20 | 1981-09-09 | ||
GB1571496A (en) * | 1976-05-04 | 1980-07-16 | Standard Telephones Cables Ltd | Cholesteric liquid crystal cells |
CH614828GA3 (en) * | 1976-06-16 | 1979-12-28 | Liquid-crystal display with a guest/host liquid-crystal layer and method for producing this liquid-crystal display | |
FR2356173A1 (en) * | 1976-06-21 | 1978-01-20 | Gen Electric | PROCESS FOR IMPROVING THE DESCENT TIME OF A DISPLAY DEVICE COMPOSED OF NEMATIC PROPELLERED LIQUID CRYSTALS |
DE2706405C3 (en) * | 1977-02-15 | 1985-08-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V., 8000 Muenchen | Display arrangement for displaying light images against a dark background |
JPS53102055A (en) * | 1977-02-18 | 1978-09-06 | Toshiba Corp | Liquid crystal color display element |
CH629001A5 (en) * | 1978-02-06 | 1982-03-31 | Ebauches Sa | Display unit electro-optical passive. |
JPS5923328A (en) * | 1982-07-29 | 1984-02-06 | Sharp Corp | Liquid crystal display device |
GB2129954B (en) * | 1982-10-22 | 1986-03-05 | Stc Plc | Liquid crystal display device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT946051B (en) * | 1970-12-04 | 1973-05-21 | Hoffmann La Roche | OPTICAL CELL |
-
1974
- 1974-03-01 FR FR7407137A patent/FR2220804B1/fr not_active Expired
- 1974-03-06 GB GB999074A patent/GB1464791A/en not_active Expired
- 1974-03-06 DE DE19742410557 patent/DE2410557C2/en not_active Expired
- 1974-03-08 JP JP2645574A patent/JPS6222153B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2220804A1 (en) | 1974-10-04 |
DE2410557C2 (en) | 1984-08-30 |
GB1464791A (en) | 1977-02-16 |
JPS6222153B2 (en) | 1987-05-15 |
DE2410557A1 (en) | 1974-09-12 |
JPS49127645A (en) | 1974-12-06 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |