FR2177317A5 - Liquid crystal display device - exhibits colour change on applying a voltage - Google Patents
Liquid crystal display device - exhibits colour change on applying a voltageInfo
- Publication number
- FR2177317A5 FR2177317A5 FR7309470A FR7309470A FR2177317A5 FR 2177317 A5 FR2177317 A5 FR 2177317A5 FR 7309470 A FR7309470 A FR 7309470A FR 7309470 A FR7309470 A FR 7309470A FR 2177317 A5 FR2177317 A5 FR 2177317A5
- Authority
- FR
- France
- Prior art keywords
- liq
- crystal
- electrode
- applying
- voltage
- 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
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
- G02F1/137—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
- G02F1/1393—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 the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC cells
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Liq. crystal display device comprises a polarisn. a 1st transparent electrode, a thin film of nematic liq. crystal in contact with the electrode, a 2nd electrode contacting the other side of the liq. crystal and a 2nd polariser disposed so that light which has passed through the liq. crystal, opt. after reflection at the 2nd electrode, passes also through the 2nd polariser. Specif. each electrode has an epitaxially absorptive effect on the liq. crystal, and has a topology corresp. in a straight beam parallel to those associated with the 2nd surface, and the axes of the liq. crystals are in planes perpendicular to the surface of the electrodes. Apptn. shows a change of colour of the liq. crystal on applying a voltage between the electrodes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722212881 DE2212881A1 (en) | 1972-03-17 | 1972-03-17 | LIQUID CRYSTAL DISPLAY ELEMENT |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2177317A5 true FR2177317A5 (en) | 1973-11-02 |
Family
ID=5839176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7309470A Expired FR2177317A5 (en) | 1972-03-17 | 1973-03-16 | Liquid crystal display device - exhibits colour change on applying a voltage |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS4914140A (en) |
BE (1) | BE796768A (en) |
DE (1) | DE2212881A1 (en) |
FR (1) | FR2177317A5 (en) |
IT (1) | IT982893B (en) |
NL (1) | NL7303204A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51145495U (en) * | 1975-05-16 | 1976-11-22 | ||
JPS5251479A (en) * | 1975-10-22 | 1977-04-25 | Sumitomo Alum Smelt Co Ltd | Process for laminating a fluorocarbon rsin film |
FR2568393B1 (en) * | 1984-07-26 | 1986-11-14 | Commissariat Energie Atomique | AN ELECTRICALLY CONTROLLED BIREFRINGENCE TYPE NEMATIC LIQUID CRYSTAL LOW DOPED BY A CHIRAL SOLUTE |
JPS6368813A (en) * | 1986-09-10 | 1988-03-28 | Casio Comput Co Ltd | Liquid crystal optical element |
-
1972
- 1972-03-17 DE DE19722212881 patent/DE2212881A1/en active Pending
-
1973
- 1973-03-07 NL NL7303204A patent/NL7303204A/xx unknown
- 1973-03-14 BE BE128794A patent/BE796768A/en unknown
- 1973-03-14 JP JP2991573A patent/JPS4914140A/ja active Pending
- 1973-03-15 IT IT4882573A patent/IT982893B/en active
- 1973-03-16 FR FR7309470A patent/FR2177317A5/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS4914140A (en) | 1974-02-07 |
IT982893B (en) | 1974-10-21 |
DE2212881A1 (en) | 1973-09-27 |
BE796768A (en) | 1973-09-14 |
NL7303204A (en) | 1973-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |