DE2500838A1 - Verfahren zur modulierung von licht mittels einer elektro-optischen vorrichtung - Google Patents
Verfahren zur modulierung von licht mittels einer elektro-optischen vorrichtungInfo
- Publication number
- DE2500838A1 DE2500838A1 DE19752500838 DE2500838A DE2500838A1 DE 2500838 A1 DE2500838 A1 DE 2500838A1 DE 19752500838 DE19752500838 DE 19752500838 DE 2500838 A DE2500838 A DE 2500838A DE 2500838 A1 DE2500838 A1 DE 2500838A1
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- mass
- liquid crystals
- field
- electric field
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 30
- 239000004973 liquid crystal related substance Substances 0.000 claims description 85
- 230000005684 electric field Effects 0.000 claims description 34
- 230000009471 action Effects 0.000 claims description 27
- 230000003098 cholesteric effect Effects 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 9
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 description 29
- 239000000126 substance Substances 0.000 description 26
- 210000004027 cell Anatomy 0.000 description 23
- 239000000203 mixture Substances 0.000 description 20
- 125000004432 carbon atom Chemical group C* 0.000 description 17
- 210000002421 cell wall Anatomy 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 15
- 230000008569 process Effects 0.000 description 7
- 239000004988 Nematic liquid crystal Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 125000004093 cyano group Chemical group *C#N 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 230000005669 field effect Effects 0.000 description 5
- 125000005843 halogen group Chemical group 0.000 description 5
- -1 methoxy, ethoxy Chemical group 0.000 description 5
- 125000001424 substituent group Chemical group 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- ANVGYLDROLBYEZ-UHFFFAOYSA-N (4-pentylphenyl) 3-chloro-4-(4-pentylbenzoyl)oxybenzoate Chemical compound C1=CC(CCCCC)=CC=C1OC(=O)C(C=C1Cl)=CC=C1OC(=O)C1=CC=C(CCCCC)C=C1 ANVGYLDROLBYEZ-UHFFFAOYSA-N 0.000 description 2
- QPRQEDXDYOZYLA-UHFFFAOYSA-N 2-methylbutan-1-ol Chemical compound CCC(C)CO QPRQEDXDYOZYLA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000005708 carbonyloxy group Chemical group [*:2]OC([*:1])=O 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 239000002482 conductive additive Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 125000000547 substituted alkyl group Chemical group 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- SJIINSFMAXEDIM-UHFFFAOYSA-N (4-pentylphenyl) 2-chloro-4-(4-pentylbenzoyl)oxybenzoate Chemical compound C1=CC(CCCCC)=CC=C1OC(=O)C(C(=C1)Cl)=CC=C1OC(=O)C1=CC=C(CCCCC)C=C1 SJIINSFMAXEDIM-UHFFFAOYSA-N 0.000 description 1
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 1
- 125000004959 2,6-naphthylene group Chemical group [H]C1=C([H])C2=C([H])C([*:1])=C([H])C([H])=C2C([H])=C1[*:2] 0.000 description 1
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 1
- PHTATJLTDWJUNM-UHFFFAOYSA-N 2-chloro-4-(4-pentylbenzoyl)oxy-3-(4-pentylphenyl)benzoic acid Chemical compound C1=CC(CCCCC)=CC=C1C(=O)OC1=CC=C(C(O)=O)C(Cl)=C1C1=CC=C(CCCCC)C=C1 PHTATJLTDWJUNM-UHFFFAOYSA-N 0.000 description 1
- 101100188553 Arabidopsis thaliana OCT4 gene Proteins 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 235000009161 Espostoa lanata Nutrition 0.000 description 1
- 240000001624 Espostoa lanata Species 0.000 description 1
- ZJMSXVSGTCVBQK-UHFFFAOYSA-N I.I.I.I.I.I.I Chemical compound I.I.I.I.I.I.I ZJMSXVSGTCVBQK-UHFFFAOYSA-N 0.000 description 1
- RCZNYTXJVULKCR-UHFFFAOYSA-N I.I.I.I.I.I.I.I Chemical compound I.I.I.I.I.I.I.I RCZNYTXJVULKCR-UHFFFAOYSA-N 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 125000005194 alkoxycarbonyloxy group Chemical group 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 125000005337 azoxy group Chemical group [N+]([O-])(=N*)* 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 235000012000 cholesterol Nutrition 0.000 description 1
- 150000001841 cholesterols Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 1
- 125000005677 ethinylene group Chemical group [*:2]C#C[*:1] 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000008040 ionic compounds Chemical class 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000001564 phenyl benzoates Chemical class 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- SATVIFGJTRRDQU-UHFFFAOYSA-N potassium hypochlorite Chemical compound [K+].Cl[O-] SATVIFGJTRRDQU-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003637 steroidlike Effects 0.000 description 1
- 125000005415 substituted alkoxy group Chemical group 0.000 description 1
- 125000005650 substituted phenylene group Chemical group 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 125000004953 trihalomethyl group Chemical group 0.000 description 1
Classifications
-
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
-
- 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
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
- C09K19/2021—Compounds containing at least one asymmetric carbon atom
-
- 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
- G02F1/139—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 orientation effects in which the liquid crystal remains transparent
- G02F1/1392—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 orientation effects in which the liquid crystal remains transparent using a field-induced sign-reversal of the dielectric anisotropy
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Substances (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US43271774A | 1974-01-11 | 1974-01-11 | |
| US05/478,990 US4009934A (en) | 1974-01-11 | 1974-06-28 | Electro-optic display devices and methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2500838A1 true DE2500838A1 (de) | 1975-07-17 |
Family
ID=27029614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19752500838 Pending DE2500838A1 (de) | 1974-01-11 | 1975-01-10 | Verfahren zur modulierung von licht mittels einer elektro-optischen vorrichtung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4009934A (en, 2012) |
| JP (1) | JPS50104043A (en, 2012) |
| CA (1) | CA1099809A (en, 2012) |
| DE (1) | DE2500838A1 (en, 2012) |
| FR (1) | FR2257917B1 (en, 2012) |
| NL (1) | NL7500345A (en, 2012) |
| SE (1) | SE7500251L (en, 2012) |
Families Citing this family (66)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4173545A (en) * | 1976-04-06 | 1979-11-06 | Thomson-Csf | Liquid crystal with high negative dielectric anisotropy and mixtures of the same with nematic liquid crystals for improving dynamic scattering in electro-optic devices |
| FR2349849A1 (fr) * | 1976-04-30 | 1977-11-25 | Commissariat Energie Atomique | Dispositif d'affichage analogique a cristal liquide |
| JPS52142683A (en) * | 1976-05-25 | 1977-11-28 | Citizen Watch Co Ltd | Liquid crystal composite |
| US4106853A (en) * | 1976-07-28 | 1978-08-15 | Hughes Aircraft Company | Method and apparatus for increasing contrast ratio of the stored image in a storage mode light valve |
| GB1587819A (en) * | 1976-08-13 | 1981-04-08 | Secr Defence | Aromatic diester liquid crystal materials |
| US4235736A (en) * | 1977-02-11 | 1980-11-25 | Thomson-Csf | Diphenylic esters exhibiting mesomorphic phases |
| US4120567A (en) * | 1977-02-11 | 1978-10-17 | Rca Corporation | Electro-optic device |
| CH626914A5 (en, 2012) * | 1977-03-08 | 1981-12-15 | Bbc Brown Boveri & Cie | |
| NL169647B (nl) * | 1977-10-27 | 1982-03-01 | Philips Nv | Weergeefinrichting met een vloeibaar kristal. |
| GB1569686A (en) * | 1977-11-10 | 1980-06-18 | Standard Telephones Cables Ltd | Smectic display cell |
| GB1569687A (en) * | 1977-11-10 | 1980-06-18 | Standard Telephones Cables Ltd | Smectic display cell |
| US4291948A (en) * | 1977-11-10 | 1981-09-29 | International Standard Electric Corporation | Liquid crystal display incorporating positive and negative smectic material |
| GB2010560A (en) * | 1977-11-22 | 1979-06-27 | Suwa Seikosha Kk | Liquid crystal display arrangements |
| GB2013014B (en) * | 1977-12-27 | 1982-06-30 | Suwa Seikosha Kk | Liquid crystal display device |
| FR2419966A1 (fr) * | 1978-03-17 | 1979-10-12 | Thomson Csf | Cristal liquide de type diester presentant une phase smectique, a basse frequence d'isotropie dielectrique, et dispositif de visualisation utilisant ce cristal |
| JPS54137361A (en) * | 1978-04-18 | 1979-10-25 | Nec Corp | Color display device of liquid crystal |
| AU531191B2 (en) * | 1979-01-24 | 1983-08-11 | National Research Development Corp. | Liquid crystal colour display |
| EP0019665B2 (de) * | 1979-05-28 | 1987-12-16 | MERCK PATENT GmbH | Flüssigkristalline Verbindungen |
| DE2933563A1 (de) * | 1979-07-18 | 1981-02-05 | Bbc Brown Boveri & Cie | Anisotrope verbindungen mit negativer dk-anisotropie |
| FR2461697A1 (fr) * | 1979-07-20 | 1981-02-06 | Suwa Seikosha Kk | 3-cyano-4-alcoxybenzoate de 2-chloro-4-alcoylphenyle et son utilisation dans une composition de cristaux liquides |
| JPS5672419A (en) * | 1979-11-19 | 1981-06-16 | Matsushita Electric Ind Co Ltd | Polarization controller |
| DE2949080A1 (de) * | 1979-12-06 | 1981-06-11 | Merck Patent Gmbh, 6100 Darmstadt | Naphthalinderivate, diese enthaltende dielektrika und elektrooptisches anzeigeelement |
| JPS6040608B2 (ja) * | 1980-01-08 | 1985-09-11 | セイコーエプソン株式会社 | 液晶ライトバルブ |
| US4386836A (en) * | 1979-12-28 | 1983-06-07 | Kabushiki Kaisha Suwa Seikosha | Electro-photographic printer |
| NL8001556A (nl) * | 1980-03-17 | 1981-10-16 | Philips Nv | Weergeefinrichting met vloeibaar kristal. |
| DE3140078A1 (de) * | 1980-10-08 | 1982-04-22 | Kabushiki Kaisha Suwa Seikosha, Tokyo | Optische fluessigkristalleinrichtung und drucker, der eine solche optische einrichtung als lichtventil benutzt |
| GB2085910B (en) * | 1980-10-13 | 1985-05-22 | Secr Defence | A liquid crystal composition comprising a mixture of diester(s) and cyclohexane derivative(s) |
| US4406814A (en) * | 1981-04-10 | 1983-09-27 | Eaton Corporation | Liquid crystalline materials and optical displays utilizing same |
| JPS57171378A (en) * | 1981-04-15 | 1982-10-21 | Suwa Seikosha Kk | Liquid crystal optical device |
| DE3221462A1 (de) * | 1981-06-18 | 1983-01-05 | F. Hoffmann-La Roche & Co AG, 4002 Basel | Fluessigkristallines gemisch |
| JPS5817414A (ja) * | 1981-07-24 | 1983-02-01 | Seiko Epson Corp | 液晶光学装置 |
| US4810063A (en) * | 1981-09-16 | 1989-03-07 | Manchester R & D Partnership | Enhanced scattering voltage sensitive encapsulated liquid crystal with light directing and interference layer features |
| US4606611A (en) * | 1981-09-16 | 1986-08-19 | Manchester R & D Partnership | Enhanced scattering in voltage sensitive encapsulated liquid crystal |
| GB2114994B (en) * | 1982-02-18 | 1984-10-10 | Suwa Seikosha Kk | Liquid crystal compositions |
| US4472026A (en) * | 1982-05-06 | 1984-09-18 | At&T Bell Laboratories | Electrothermal matrix addressable liquid crystal display |
| JPS5973555A (ja) * | 1982-10-20 | 1984-04-25 | Seiko Epson Corp | エステル−アゾキシ化合物 |
| JPS6041330B2 (ja) * | 1982-11-18 | 1985-09-17 | セイコーエプソン株式会社 | 液晶ライトバルブ |
| US4591233A (en) * | 1983-03-21 | 1986-05-27 | Manchester R & D Partnership | Enhanced scattering in voltage sensitive encapsulated liquid crystal with spaced apart absorber |
| EP0123981A3 (de) * | 1983-04-29 | 1986-12-03 | F. HOFFMANN-LA ROCHE & CO. Aktiengesellschaft | Flüssigkristallzelle |
| JPS60117215A (ja) * | 1983-11-29 | 1985-06-24 | Sharp Corp | 液晶表示装置 |
| FR2557719B1 (fr) * | 1984-01-03 | 1986-04-11 | Thomson Csf | Dispositif de visualisation a memoire utilisant un materiau ferroelectrique |
| US4595259A (en) * | 1984-01-19 | 1986-06-17 | Xerox Corporation | Transient state liquid crystal image bar for electrophotographic printers |
| FR2561657B1 (fr) * | 1984-03-20 | 1988-02-19 | Thomson Csf | Procede d'obtention d'un cristal liquide smectique c chiral ferroelectrique cristal liquide obtenu par ce procede et dispositif de visualisation utilisant ce cristal liquide |
| DE3425584A1 (de) * | 1984-07-11 | 1986-01-16 | Merck Patent Gmbh, 6100 Darmstadt | Optisches system mit einer fluessigkristallzelle, verfahren zu seinem betrieb und seine verwendung |
| US4688899A (en) * | 1984-07-27 | 1987-08-25 | Casio Computer Co., Ltd. | Dual-frequency, dielectric anisotropy liquid crystal display |
| GB2163564A (en) * | 1984-08-25 | 1986-02-26 | Stc Plc | Thermal image sensor |
| US4732456A (en) * | 1984-08-28 | 1988-03-22 | Taliq Corporation | Scattering display for contrast enhancement including target |
| US4832458A (en) * | 1984-08-28 | 1989-05-23 | Talig Corporation | Display for contrast enhancement |
| US4634225A (en) * | 1984-12-24 | 1987-01-06 | General Electric Co. | Transflective liquid crystal display with integral heating unit and temperature sensor |
| GB8501509D0 (en) * | 1985-01-22 | 1985-02-20 | Secr Defence | Esters |
| US5142389A (en) * | 1985-03-01 | 1992-08-25 | Manchester R & D Limited Partnership | Liquid crystal color display and method |
| US5168380A (en) * | 1985-03-01 | 1992-12-01 | Manchester R & D Partnership An Ohio Limited Partnership | Multiple containment mediums of operationally nematic liquid crystal responsive to a prescribed input |
| US4878741A (en) * | 1986-09-10 | 1989-11-07 | Manchester R & D Partnership | Liquid crystal color display and method |
| US4953953A (en) * | 1985-03-01 | 1990-09-04 | Manchester R & D Partnership | Complementary color liquid display |
| AU5540286A (en) * | 1985-03-01 | 1986-09-24 | Manchester R And D Partnership | Liquid crystal color display and method |
| US5345322A (en) * | 1985-03-01 | 1994-09-06 | Manchester R&D Limited Partnership | Complementary color liquid crystal display |
| US5208686A (en) * | 1985-03-01 | 1993-05-04 | Manchester R&D Partnership | Liquid crystal color display and method |
| JP2767790B2 (ja) * | 1985-05-07 | 1998-06-18 | セイコーエプソン株式会社 | 液晶電気光学装置の駆動方法 |
| CA1258512A (en) * | 1985-10-28 | 1989-08-15 | John W. Goodby | Ferroelectric liquid crystal optical devices |
| US5279764A (en) * | 1988-03-10 | 1994-01-18 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Dihalogenobenzene derivatives |
| US4897216A (en) * | 1988-03-10 | 1990-01-30 | Merck Patent Gesellschaft Mit Beschrankter Haftung | 2,3-difluorophenol derivatives |
| JP3021477B2 (ja) * | 1989-08-28 | 2000-03-15 | 昭和シェル石油株式会社 | 三安定状態で駆動する光学素子用液晶 |
| US6552850B1 (en) * | 1998-06-30 | 2003-04-22 | Citicorp Development Center, Inc. | Device, method, and system of display for controlled viewing |
| US6320563B1 (en) * | 1999-01-21 | 2001-11-20 | Kent State University | Dual frequency cholesteric display and drive scheme |
| JP4027939B2 (ja) * | 2004-01-15 | 2007-12-26 | シャープ株式会社 | 表示素子および表示装置 |
| KR100649039B1 (ko) * | 2004-01-15 | 2006-11-27 | 샤프 가부시키가이샤 | 표시 소자 및 표시 장치, 및 표시 소자의 제조 방법 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3731986A (en) * | 1971-04-22 | 1973-05-08 | Int Liquid Xtal Co | Display devices utilizing liquid crystal light modulation |
| US3857629A (en) * | 1973-05-14 | 1974-12-31 | Ibm | Fast turn-off nematic liquid optical devices |
-
1974
- 1974-06-28 US US05/478,990 patent/US4009934A/en not_active Expired - Lifetime
- 1974-12-30 CA CA217,071A patent/CA1099809A/en not_active Expired
-
1975
- 1975-01-10 SE SE7500251A patent/SE7500251L/xx unknown
- 1975-01-10 NL NL7500345A patent/NL7500345A/xx unknown
- 1975-01-10 FR FR7500633A patent/FR2257917B1/fr not_active Expired
- 1975-01-10 DE DE19752500838 patent/DE2500838A1/de active Pending
- 1975-01-11 JP JP50005880A patent/JPS50104043A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL7500345A (en, 2012) | 1975-07-15 |
| JPS50104043A (en, 2012) | 1975-08-16 |
| CA1099809A (en) | 1981-04-21 |
| FR2257917B1 (en, 2012) | 1976-12-31 |
| US4009934A (en) | 1977-03-01 |
| FR2257917A1 (en, 2012) | 1975-08-08 |
| SE7500251L (en, 2012) | 1975-07-14 |
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