FR2177352A5 - Liquid crystal display element - using nematic liquid crystal with circular polarizer - Google Patents
Liquid crystal display element - using nematic liquid crystal with circular polarizerInfo
- Publication number
- FR2177352A5 FR2177352A5 FR7309871A FR7309871A FR2177352A5 FR 2177352 A5 FR2177352 A5 FR 2177352A5 FR 7309871 A FR7309871 A FR 7309871A FR 7309871 A FR7309871 A FR 7309871A FR 2177352 A5 FR2177352 A5 FR 2177352A5
- Authority
- FR
- France
- Prior art keywords
- esp
- liquid crystal
- circular
- polarizer
- cell
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
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)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A thin layer of nematic, esp. homotropic material with negative dielectric anisotropy and molecules oriented perpendicular to the faces is placed between two conductive electrode films of which >=1 and esp. both are transparent, being esp. of InO2 deposited on glass carrier plates. In front of the front glass plate is a circular polarizer esp. in the form of a quarter wave foil against the glass followed by a linear polarizer foil, combined with it, whose direction of polarization is at 45 degrees to the vibration axis of the quarter wave foil. Behind the rear glass plate is an electrically conductive metal mirror film esp. of vapour deposited Al, and light passing through the cell and reflected by the layer has the direction of circular polarization reversed so that the polarizer functions as circular analyzer on its emergence from the front face of the cell.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2213337A DE2213337A1 (en) | 1972-03-20 | 1972-03-20 | LIQUID CRYSTAL DISPLAY ELEMENT |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2177352A5 true FR2177352A5 (en) | 1973-11-02 |
Family
ID=5839423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7309871A Expired FR2177352A5 (en) | 1972-03-20 | 1973-03-20 | Liquid crystal display element - using nematic liquid crystal with circular polarizer |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS496898A (en) |
DE (1) | DE2213337A1 (en) |
FR (1) | FR2177352A5 (en) |
NL (1) | NL7303349A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2420178A1 (en) * | 1978-03-13 | 1979-10-12 | Hughes Aircraft Co | LIQUID CRYSTAL DISPLAY DEVICE |
FR2580105A1 (en) * | 1985-04-04 | 1986-10-10 | Commissariat Energie Atomique | Display cell with nematic liquid crystals of the reflective type with electrically-controlled birefringence making it possible to improve the illumination of the display |
US5361151A (en) * | 1990-08-09 | 1994-11-01 | Seiko Epson Corporation | Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH564813A5 (en) * | 1973-11-12 | 1975-07-31 | Bbc Brown Boveri & Cie | |
JPS5137249A (en) * | 1974-09-26 | 1976-03-29 | Dainippon Toryo Kk | HANSHAGATAEKISHOHYOJISOCHI |
JPS5137250A (en) * | 1974-09-26 | 1976-03-29 | Dainippon Toryo Kk | HANSHAGATAEKISHOHYOJISOCHI |
-
1972
- 1972-03-20 DE DE2213337A patent/DE2213337A1/en active Pending
-
1973
- 1973-03-09 NL NL7303349A patent/NL7303349A/xx unknown
- 1973-03-20 FR FR7309871A patent/FR2177352A5/en not_active Expired
- 1973-03-20 JP JP48032574A patent/JPS496898A/ja active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2420178A1 (en) * | 1978-03-13 | 1979-10-12 | Hughes Aircraft Co | LIQUID CRYSTAL DISPLAY DEVICE |
FR2580105A1 (en) * | 1985-04-04 | 1986-10-10 | Commissariat Energie Atomique | Display cell with nematic liquid crystals of the reflective type with electrically-controlled birefringence making it possible to improve the illumination of the display |
US5361151A (en) * | 1990-08-09 | 1994-11-01 | Seiko Epson Corporation | Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light |
USRE35799E (en) * | 1990-08-09 | 1998-05-19 | Seiko Epson Corporation | Reflection-type liquid crystal device with polarization of output light perpendicular to that of input light |
Also Published As
Publication number | Publication date |
---|---|
JPS496898A (en) | 1974-01-22 |
NL7303349A (en) | 1973-09-24 |
DE2213337A1 (en) | 1973-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |