WO2000060409A8 - Liquid crystal dimmer - Google Patents
Liquid crystal dimmerInfo
- Publication number
- WO2000060409A8 WO2000060409A8 PCT/JP2000/001874 JP0001874W WO0060409A8 WO 2000060409 A8 WO2000060409 A8 WO 2000060409A8 JP 0001874 W JP0001874 W JP 0001874W WO 0060409 A8 WO0060409 A8 WO 0060409A8
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- crystal material
- dichroic dye
- dimmer
- absorptance
- Prior art date
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
- G02F1/13725—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 guest-host interaction
Abstract
A liquid crystal dimmer in which transparent conductive films are provided on the mutually opposed faces of a pair of transparent substrates and a medium holding therein a liquid crystal material and a dichroic dye aligned according to the alignment of the liquid crystal material. The index of double refraction (Δn) of the liquid crystal material is less than 0.15. The relationship between the absorptance (A//) along the major axis of the molocule of the dichroic dye and the absorptance (A ) along the minor axis thereof is expressed by 1.0≥[(A//-A )/(A//+2A )]≥0.75. Another liquid crystal dimmer is disclosed in which the ratio (liquid crystal content) of the liquid crystal material to the medium is 50 wt.% or more, the ratio of concentration of the dichroic dye to that of the liquid crystal is 1 wt.% or more, and the distance between the transparent conductive films is in the range from 10 to 40 νm.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9601399 | 1999-04-02 | ||
| JP11/96013 | 1999-04-02 | ||
| JP9643999 | 1999-04-02 | ||
| JP11/96439 | 1999-04-02 | ||
| JP2000/37347 | 2000-02-16 | ||
| JP2000/37384 | 2000-02-16 | ||
| JP2000037347A JP2000347222A (en) | 1999-04-02 | 2000-02-16 | Liquid crystal light-controlling body |
| JP2000037384A JP2000347223A (en) | 1999-04-02 | 2000-02-16 | Liquid crystal dimming body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2000060409A1 WO2000060409A1 (en) | 2000-10-12 |
| WO2000060409A8 true WO2000060409A8 (en) | 2000-11-23 |
Family
ID=27468383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2000/001874 WO2000060409A1 (en) | 1999-04-02 | 2000-03-27 | Liquid crystal dimmer |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2000060409A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4556289A (en) * | 1983-03-21 | 1985-12-03 | Manchester R & D Partnership | Low birefringence encapsulated liquid crystal and optical shutter using same |
| JP2548967B2 (en) * | 1988-05-28 | 1996-10-30 | タキロン株式会社 | Light control material sheet, light control material, and method for manufacturing the same |
| US5156452A (en) * | 1989-07-20 | 1992-10-20 | Paul Drzaic | Encapsulated liquid crystal apparatus having low off-axis haze and operable by a sine-wave power source |
| JPH05112780A (en) * | 1991-10-23 | 1993-05-07 | Mitsubishi Kasei Corp | Light intensity regulating material and light intensity regulating element containing same |
| JPH09143472A (en) * | 1995-09-18 | 1997-06-03 | Mitsubishi Chem Corp | Liquid crystal composition |
-
2000
- 2000-03-27 WO PCT/JP2000/001874 patent/WO2000060409A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000060409A1 (en) | 2000-10-12 |
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