DE4217416A1 - Microencapsulated liquid crystal optical switch e.g. for window of building - using UV radiation interference reflection or absorption layer on UV incident surface to reduce UV radiation on liquid crystal droplet layer - Google Patents
Microencapsulated liquid crystal optical switch e.g. for window of building - using UV radiation interference reflection or absorption layer on UV incident surface to reduce UV radiation on liquid crystal droplet layerInfo
- Publication number
- DE4217416A1 DE4217416A1 DE19924217416 DE4217416A DE4217416A1 DE 4217416 A1 DE4217416 A1 DE 4217416A1 DE 19924217416 DE19924217416 DE 19924217416 DE 4217416 A DE4217416 A DE 4217416A DE 4217416 A1 DE4217416 A1 DE 4217416A1
- Authority
- DE
- Germany
- Prior art keywords
- layer
- liquid crystal
- radiation
- ultraviolet radiation
- electrically conductive
- 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.)
- Ceased
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
- G02F1/133—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
- G02F1/133509—Filters, e.g. light shielding masks
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
-
- 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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
Abstract
Description
Die Erfindung betrifft insbesondere eine Weiterbildung mikro gekapselter Flüssigkristall-Systeme mit elektrisch schalt barer optischer Transmission, die mit dem Verfahren entspre chend dem Hauptpatent hergestellt sind.The invention relates in particular to a further development micro encapsulated liquid crystal systems with electrical switching barer optical transmission, which corresponds to the method according to the main patent.
Mikrogekapselte Flüssigkristall-Systeme mit elektrisch schalt barer, optischer Transmission, die mit dem Verfahren nach dem Hauptpatent hergestellt sind, weisen folgenden Nachteil auf: Die mikrogekapselte Flüssigkristallschicht 1 (insbesondere die darin enthaltenen Flüssigkristalltröpfchen 2) ist bei der er findungsgemäßen Verwendung, z. B. bei einer Gebäudeverglasung, der durch das Substrat 11 und die transparente elektrisch leit fähige Schicht 13 einfallenden ultravioletten Strahlung ausge setzt. Zwar bewirkt das Substrat 11 bereits eine wesentliche Reduzierung der durch dieses hindurchtretenden ultravioletten Strahlung, jedoch kann die verbleibende Intensität der ultra violetten Strahlung, der die mikrogekapselte Flüssigkristall schicht 1 ausgesetzt ist, eine wesentliche Reduzierung der Lebensdauer der Flüssigkristall-Systeme bewirken.Microencapsulated liquid crystal systems with electrically switchable, optical transmission, which are produced with the method according to the main patent, have the following disadvantage: The microencapsulated liquid crystal layer 1 (in particular the liquid crystal droplets 2 contained therein) is in the inventive use, z. B. in a building glazing, the out through the substrate 11 and the transparent electrically conductive layer 13 incident ultraviolet radiation. Although the substrate 11 already brings about a substantial reduction in the ultraviolet radiation passing through it, the remaining intensity of the ultra violet radiation to which the microencapsulated liquid crystal layer 1 is exposed can bring about a substantial reduction in the life of the liquid crystal systems.
Die Erfindung bezweckt daher, eine verbesserte Anordnung eines mikrogekapselten Flüssigkristall-Systems anzugeben, bei der die Intensität der ultravioletten Strahlung in der mikrogekapselten Flüssigkristallschicht wesentlich reduziert ist. Dabei soll das mikrogekapselten Flüssigkristall-Systeme im wesentlichen weiterhin durch das in der obigen Patentanmeldung offenbarte Verfahren herstellbar sein.The invention therefore aims to provide an improved arrangement of a micro-encapsulated liquid crystal system to specify in which the Intensity of ultraviolet radiation in the microencapsulated Liquid crystal layer is significantly reduced. It should microencapsulated liquid crystal systems essentially further by that disclosed in the above patent application Process can be produced.
Dementsprechend ist es die Aufgabe der vorliegenden Erfindung, eine Variation des im Hauptpatent offenbarten Verfahrens anzugeben, durch welche eine Reduzierung der ultravioletten Strahlung in der mikrogekapselten Flüssigkristallschicht des Flüssigkristall-Systems erreicht wird. Accordingly, it is the object of the present invention a variation of the process disclosed in the main patent specify by which a reduction in ultraviolet Radiation in the microencapsulated liquid crystal layer of the Liquid crystal system is achieved.
Die Aufgabe wird bei dem Verfahren nach Hauptpatent durch die Merkmale des Anspruchs 1 gelöst.The task is in the process according to the main patent by the Features of claim 1 solved.
Die Aufgabe wird ferner bei der Anordnung nach Hauptpatent durch die Merkmale des Anspruchs 2 gelöst.The task is also in the arrangement according to the main patent solved by the features of claim 2.
Insbesondere wird eine Verlängerung der Lebensdauer von Anord nungen gemäß Anspruch 24 des Hauptpatentes für Gebäudevergla sungen usw. erreicht.In particular, extending the life of anord Openings according to claim 24 of the main patent for building glazing solutions etc. reached.
Die Erfindung wird im folgenden an dem in der Zeichnung darge stellten Ausführungsbeispiels näher erläutert. Dabei zeigt die einzige Fig. 1 einen Schnitt durch ein Ausführungsbeispiel eines mikrogekapselter Flüssigkristall-Systems.The invention is explained in more detail below on the embodiment presented in the drawing Darge. The sole Fig. 1 shows a section through an embodiment of a microencapsulated liquid crystal system.
Die Anordnung entsprechend dem Bezugszeichen 1 bis 14 ist in der Figurenbeschreibung zu Fig. 1 der Beschreibung des Hauptpatents ausführlich beschrieben. Ergänzend weist die Anordnung eine ultraviolette Strahlung reflektierende oder absorbierende Schicht 15 auf. Die ultraviolette Strahlung reflektierende oder absorbierende Schicht 15 kann dabei, wie dargestellt, an der Außenseite des der einfallenden Strahlung 16 zugewandten Substrates 11 angeordnet sein. Es ist jedoch auch möglich, die ultraviolette Strahlung reflektierende oder absorbierende Schicht 15 zwischen dem der einfallenden Strah lung zugewandten Substrat 11 und der transparenten elektrisch leitfähigen Schicht 13 oder der mikrogekapselter Flüssigkri stallschicht 1 und der elektrisch leitfähigen Schicht 13 anzu ordnen. Desweiteren ist es möglich, die elektrisch leitfähige Schicht 13 in ihrer Dicke so zu bemessen, daß sie ultraviolette Strahlung reflektiert bzw. eine verringerte Transmission für ultraviolette Strahlung aufweist.The arrangement corresponding to reference numerals 1 to 14 is described in detail in the description of the figures relating to FIG. 1 of the description of the main patent. In addition, the arrangement has an ultraviolet radiation reflecting or absorbing layer 15 . The layer 15 reflecting or absorbing ultraviolet radiation can, as shown, be arranged on the outside of the substrate 11 facing the incident radiation 16 . However, it is also possible to arrange the ultraviolet radiation reflecting or absorbing layer 15 between the incident radiation facing substrate 11 and the transparent electrically conductive layer 13 or the microencapsulated liquid crystal layer 1 and the electrically conductive layer 13 . Furthermore, it is possible to dimension the electrically conductive layer 13 in such a way that it reflects ultraviolet radiation or has a reduced transmission for ultraviolet radiation.
Die Schicht 15 wird vorzugsweise als reflektierende Inter ferenzschicht ausgeführt. Es ist jedoch auch möglich, die Schicht 15 als ultraviolette Strahlung absorbierende Schicht auszuführen. Das Aufbringen der ultraviolette Strahlung reflektierenden oder absorbierenden Schicht 15 kann bei dem in der obigen Patentanmeldung offenbarten Herstellungsverfahren unmittelbar vor oder nach Aufbringen der elektrisch leitfähigen Schicht 13 erfolgen.The layer 15 is preferably designed as a reflective interferential layer. However, it is also possible to design the layer 15 as an ultraviolet radiation-absorbing layer. In the manufacturing method disclosed in the above patent application, the application of the ultraviolet radiation-reflecting or absorbing layer 15 can take place immediately before or after the application of the electrically conductive layer 13 .
Dabei kann ein Sputterverfahren oder ein pyrolitisches Verfahren verwendet werden, oder die ultraviolette Strahlung reflektierende oder absorbierende Schicht kann mittels eines Rotationsschleuderverfahrens aufgebracht werden.This can be a sputtering process or a pyrolytic Process used, or the ultraviolet radiation reflective or absorbent layer can be by means of a Rotary centrifugal process are applied.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924217416 DE4217416A1 (en) | 1992-05-14 | 1992-05-26 | Microencapsulated liquid crystal optical switch e.g. for window of building - using UV radiation interference reflection or absorption layer on UV incident surface to reduce UV radiation on liquid crystal droplet layer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924215868 DE4215868A1 (en) | 1992-05-14 | 1992-05-14 | Mfg. micro-encapsulated liq. crystal system - having electrically switchable optical transmission |
DE19924217416 DE4217416A1 (en) | 1992-05-14 | 1992-05-26 | Microencapsulated liquid crystal optical switch e.g. for window of building - using UV radiation interference reflection or absorption layer on UV incident surface to reduce UV radiation on liquid crystal droplet layer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4217416A1 true DE4217416A1 (en) | 1994-02-03 |
Family
ID=25914790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19924217416 Ceased DE4217416A1 (en) | 1992-05-14 | 1992-05-26 | Microencapsulated liquid crystal optical switch e.g. for window of building - using UV radiation interference reflection or absorption layer on UV incident surface to reduce UV radiation on liquid crystal droplet layer |
Country Status (1)
Country | Link |
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DE (1) | DE4217416A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0825478A1 (en) * | 1996-08-22 | 1998-02-25 | Saint-Gobain Vitrage | Glazing with variable optical and/or energetic characteristics |
US5729312A (en) * | 1994-03-18 | 1998-03-17 | Sharp Kabushiki Kaisha | LCD and method for producing the same in which a larger number of substrate gap control materials is larger in the polymer walls than in the liquid crystal regions |
US5734454A (en) * | 1993-12-08 | 1998-03-31 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal panel with reducing means, manufacturing method therefor and projection display apparatus using the same |
US6246456B1 (en) | 1993-12-27 | 2001-06-12 | Matsushita Electric Industrial Co., Ltd. | Liquid-crystal panel of polymer dispersed type, method of manufacturing the same, and liquid-crystal display apparatus |
CN105489380A (en) * | 2014-10-01 | 2016-04-13 | 韩国科学技术研究院 | Photoreactive smart window |
WO2018132491A1 (en) * | 2017-01-10 | 2018-07-19 | Ubiquitous Energy, Inc. | Window-integrated transparent photovoltaic module |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3324691A1 (en) * | 1983-07-08 | 1985-01-17 | Merck Patent Gmbh, 6100 Darmstadt | Electro-optical display element |
DE3417363A1 (en) * | 1983-11-01 | 1985-05-09 | Polytronics, Inc., Richardson, Tex. | PACKING MATERIAL FOR LIQUID CRYSTAL CELLS |
-
1992
- 1992-05-26 DE DE19924217416 patent/DE4217416A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3324691A1 (en) * | 1983-07-08 | 1985-01-17 | Merck Patent Gmbh, 6100 Darmstadt | Electro-optical display element |
DE3417363A1 (en) * | 1983-11-01 | 1985-05-09 | Polytronics, Inc., Richardson, Tex. | PACKING MATERIAL FOR LIQUID CRYSTAL CELLS |
Non-Patent Citations (2)
Title |
---|
Pat. Abstr. Jap. P 139, 02.09.1982, Vol. 6, No. 168: JP 57-84 429 A * |
Pat. Abstr. Jap. P 147, 07.10.1982, Vol. 6, No. 198: JP 57-1 08 828 A * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5734454A (en) * | 1993-12-08 | 1998-03-31 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal panel with reducing means, manufacturing method therefor and projection display apparatus using the same |
US5963283A (en) * | 1993-12-08 | 1999-10-05 | Matsushita Electric Industrial Co., Ltd | Liquid crystal panel with reducing means, manufacturing method therefor and projection display apparatus using the same |
US6333770B1 (en) | 1993-12-08 | 2001-12-25 | Matsushita Electric Industrial Co., Ltd. | Liquid crystal panel with reducing means, manufacturing method therefore and projection display apparatus using the same |
US6246456B1 (en) | 1993-12-27 | 2001-06-12 | Matsushita Electric Industrial Co., Ltd. | Liquid-crystal panel of polymer dispersed type, method of manufacturing the same, and liquid-crystal display apparatus |
US5729312A (en) * | 1994-03-18 | 1998-03-17 | Sharp Kabushiki Kaisha | LCD and method for producing the same in which a larger number of substrate gap control materials is larger in the polymer walls than in the liquid crystal regions |
EP0825478A1 (en) * | 1996-08-22 | 1998-02-25 | Saint-Gobain Vitrage | Glazing with variable optical and/or energetic characteristics |
FR2752570A1 (en) * | 1996-08-22 | 1998-02-27 | Saint Gobain Vitrage | GLAZING WITH VARIABLE OPTICAL AND / OR ENERGY PROPERTIES |
US6055088A (en) * | 1996-08-22 | 2000-04-25 | Saint-Gobain Vitrage | Glazing with variable optical and/or energetic properties |
CN105489380A (en) * | 2014-10-01 | 2016-04-13 | 韩国科学技术研究院 | Photoreactive smart window |
CN105489380B (en) * | 2014-10-01 | 2018-05-29 | 韩国科学技术研究院 | Photoreactivity smart window |
WO2018132491A1 (en) * | 2017-01-10 | 2018-07-19 | Ubiquitous Energy, Inc. | Window-integrated transparent photovoltaic module |
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