CA1178700A - Liquid crystal visual display unit and telephone terminal incorporating such a unit - Google Patents
Liquid crystal visual display unit and telephone terminal incorporating such a unitInfo
- Publication number
- CA1178700A CA1178700A CA000357016A CA357016A CA1178700A CA 1178700 A CA1178700 A CA 1178700A CA 000357016 A CA000357016 A CA 000357016A CA 357016 A CA357016 A CA 357016A CA 1178700 A CA1178700 A CA 1178700A
- Authority
- CA
- Canada
- Prior art keywords
- liquid crystal
- unit according
- unit
- lines
- visual 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.)
- Expired
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 38
- 230000000007 visual effect Effects 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000004305 biphenyl Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 7
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000001293 FEMA 3089 Substances 0.000 description 1
- WTDRDQBEARUVNC-LURJTMIESA-N L-DOPA Chemical compound OC(=O)[C@@H](N)CC1=CC=C(O)C(O)=C1 WTDRDQBEARUVNC-LURJTMIESA-N 0.000 description 1
- 241000283986 Lepus Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
- G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7919426A FR2462755A1 (fr) | 1979-07-27 | 1979-07-27 | Dispositif de visualisation a cristal liquide, et terminal telephonique comportant un tel dispositif |
| FR7919426 | 1979-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178700A true CA1178700A (en) | 1984-11-27 |
Family
ID=9228374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000357016A Expired CA1178700A (en) | 1979-07-27 | 1980-07-25 | Liquid crystal visual display unit and telephone terminal incorporating such a unit |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4390244A (https=) |
| EP (1) | EP0023447B1 (https=) |
| JP (1) | JPS5621184A (https=) |
| CA (1) | CA1178700A (https=) |
| DE (1) | DE3062622D1 (https=) |
| FR (1) | FR2462755A1 (https=) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4514045A (en) * | 1981-06-22 | 1985-04-30 | Minnesota Mining And Manufacturing Company | Helichromic-smectic liquid crystal compositions and display cells |
| FR2512243A1 (fr) * | 1981-08-25 | 1983-03-04 | Thomson Csf | Dispositif de visualisation a effet thermo-electrique |
| FR2523343A1 (fr) * | 1982-03-09 | 1983-09-16 | Thomson Csf | Ecran d'un dispositif de visualisation utilisant un effet mixte thermique et electrique |
| US4595260A (en) * | 1982-05-28 | 1986-06-17 | Nec Corporation | Liquid crystal projection display with even temperature elevation |
| JPS59127090A (ja) * | 1983-01-10 | 1984-07-21 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | マトリクスアドレス・スメクチツク型液晶表示装置 |
| JPS62119521A (ja) * | 1985-11-19 | 1987-05-30 | Canon Inc | 光学変調装置 |
| US4818078A (en) * | 1985-11-26 | 1989-04-04 | Canon Kabushiki Kaisha | Ferroelectric liquid crystal optical modulation device and driving method therefor for gray scale display |
| US4824218A (en) * | 1986-04-09 | 1989-04-25 | Canon Kabushiki Kaisha | Optical modulation apparatus using ferroelectric liquid crystal and low-resistance portions of column electrodes |
| JP2505757B2 (ja) * | 1986-07-23 | 1996-06-12 | キヤノン株式会社 | 光学変調素子の駆動法 |
| US4859036A (en) * | 1987-05-15 | 1989-08-22 | Canon Kabushiki Kaisha | Device plate having conductive films selected to prevent pin-holes |
| FR2621728B1 (fr) * | 1987-10-09 | 1990-01-05 | Thomson Csf | Systeme de visualisation d'images en demi-teintes sur un ecran matriciel |
| JPH0360438U (https=) * | 1989-10-12 | 1991-06-13 | ||
| DE69223183T2 (de) * | 1991-06-10 | 1998-07-23 | Sharp Kk | Nichtflüchtige Speicheranordnung |
| FR2682798B1 (fr) * | 1991-10-22 | 1994-01-21 | Sextant Avionique | Procede et dispositif d'optimisation des performances d'un ecran matriciel a cristaux liquides en fonction de l'angle d'observation. |
| US5444651A (en) * | 1991-10-30 | 1995-08-22 | Sharp Kabushiki Kaisha | Non-volatile memory device |
| FR2696258B1 (fr) * | 1992-09-25 | 1994-10-28 | Sextant Avionique | Dispositif de gestion d'un système d'interaction homme-machine. |
| GB2313226A (en) * | 1996-05-17 | 1997-11-19 | Sharp Kk | Addressable matrix arrays |
| JP3950327B2 (ja) * | 2001-11-30 | 2007-08-01 | 株式会社日立製作所 | 液晶表示素子の製造方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3401262A (en) * | 1965-06-29 | 1968-09-10 | Westinghouse Electric Corp | Radiation sensitive display system utilizing a cholesteric liquid crystalline phase material |
| US3912366A (en) * | 1973-12-06 | 1975-10-14 | Ibm | Liquid crystal display assembly having polyimide layers |
| FR2292253A1 (fr) * | 1974-11-21 | 1976-06-18 | Thomson Csf | Procede et dispositif utilisant un effet thermo-optique dans un cristal liquide pour la reproduction d'images en temps reel et sans memoire |
| FR2389955B1 (https=) * | 1977-05-05 | 1981-12-04 | Thomson Csf | |
| DE2827471C2 (de) * | 1978-06-22 | 1982-09-02 | Siemens AG, 1000 Berlin und 8000 München | Flüssigkristallzelle mit einer induzierten cholesterischen Phase |
-
1979
- 1979-07-27 FR FR7919426A patent/FR2462755A1/fr active Granted
-
1980
- 1980-07-18 EP EP80401076A patent/EP0023447B1/fr not_active Expired
- 1980-07-18 DE DE8080401076T patent/DE3062622D1/de not_active Expired
- 1980-07-23 US US06/171,408 patent/US4390244A/en not_active Expired - Lifetime
- 1980-07-25 CA CA000357016A patent/CA1178700A/en not_active Expired
- 1980-07-25 JP JP10232880A patent/JPS5621184A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0023447A1 (fr) | 1981-02-04 |
| DE3062622D1 (en) | 1983-05-11 |
| JPS5621184A (en) | 1981-02-27 |
| FR2462755A1 (fr) | 1981-02-13 |
| US4390244A (en) | 1983-06-28 |
| EP0023447B1 (fr) | 1983-04-06 |
| FR2462755B1 (https=) | 1982-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1178700A (en) | Liquid crystal visual display unit and telephone terminal incorporating such a unit | |
| CA1129127A (en) | Liquid crystal line-by-line display panel | |
| US3836243A (en) | Liquid crystal display apparatus | |
| US3680950A (en) | Grandjean state liquid crystalline imaging system | |
| US4093355A (en) | Symmetrical internal heater for liquid crystal display | |
| US4499458A (en) | Liquid crystal display device associating two addressing modes | |
| US4430650A (en) | Display process using a thermo-optical effect with a memory in a thin disc-like liquid crystal layer and disc-like liquid crystals having such an effect | |
| US4391492A (en) | Thermally addressed cholesteric-smectic liquid crystal device | |
| EP0107726B1 (en) | Electrothermal matrix addressable liquid crystal display | |
| DE68908517T2 (de) | Vorrichtungen für optische speicherung. | |
| US4525708A (en) | Thermoelectric effect display device | |
| US3748753A (en) | Electro-optic device for improving reading ability | |
| US4172333A (en) | Writing and display apparatus | |
| US3182415A (en) | Electroluminescent display panels | |
| US4461715A (en) | Thermally addressed cholesteric-smectic liquid crystal device and composition | |
| US4598978A (en) | Screen of a display device using a mixed thermal and electrical effect | |
| US5040879A (en) | Variable density optical filter | |
| GB1598498A (en) | Liquid crystal device for direct display of analog information | |
| US3856381A (en) | Voltage-controlled dispersion of light by liquid crystals | |
| US3938880A (en) | Spherulitic liquid crystalline texture | |
| EP0063447B1 (en) | Thermally addressed smectic liquid crystal device | |
| EP0113414A2 (en) | Matrix-addressed smectic liquid crystal display device | |
| Hill | Magneto-optic light switching arrays and their application | |
| JPS5483000A (en) | Liquid crystal display unit | |
| Taylor | Ferroelectric displays—past, present and future |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |