WO2007020209A1 - Electrochrome paste for flexible display systems, display systems and method for the production thereof - Google Patents
Electrochrome paste for flexible display systems, display systems and method for the production thereof Download PDFInfo
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- WO2007020209A1 WO2007020209A1 PCT/EP2006/065121 EP2006065121W WO2007020209A1 WO 2007020209 A1 WO2007020209 A1 WO 2007020209A1 EP 2006065121 W EP2006065121 W EP 2006065121W WO 2007020209 A1 WO2007020209 A1 WO 2007020209A1
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- electrode
- display system
- paste
- electrochromic
- electrochromic paste
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K9/00—Tenebrescent materials, i.e. materials for which the range of wavelengths for energy absorption is changed as a result of excitation by some form of energy
- C09K9/02—Organic tenebrescent materials
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- 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
- G02F1/15—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 an electrochromic effect
-
- 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
- G02F1/15—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 an electrochromic effect
- G02F1/1514—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 an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material
- G02F1/1516—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 an electrochromic effect characterised by the electrochromic material, e.g. by the electrodeposited material comprising organic material
- G02F1/15165—Polymers
-
- 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
- G02F1/15—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 an electrochromic effect
- G02F1/153—Constructional details
- G02F1/161—Gaskets; Spacers; Sealing of cells; Filling or closing of 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
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
Definitions
- the invention relates to an electrochromic paste for flexible display systems, a flexible display system with such an electrochromic paste, and a manufacturing method for such a flexible display system.
- the technical field of the invention relates to flexible Ad ⁇ gesysteme, in particular flexible displays.
- Such displays are based on the electrochromic effect that occurs in many organic materials.
- Electrochromism is the property of a substance due to an electrical impulse to change its color.
- the electrochromic effect consists of a change in the absorption or reflection properties of a material as a result of a reversible oxidation or reduction (redox system).
- Flexible display systems based electrochromic material ⁇ lien are distinguished in particular by the fact that the required layer structure can be easily designed for the production of such displays. Due to the low total thickness, the flexibility and flexibility of the display is achieved.
- the display structure essentially consists of three layers arranged on top of each other. In this case, an electrochromic layer is arranged between a viewing electrode and a counter electrode.
- the layer structure as such usually gives the display system sufficient mechanical stability.
- ⁇ ty and capillary effect of the electrochromic material used or the electrochromic paste occur the following problems. 200511855
- the electrochromic Pas ⁇ te Due to the possibility of flow of the electrochromic Pas ⁇ te over the entire surface of the display system, for example during the manufacturing process for applying the second electrode, for example by rolling or laminating occurs due to the applied pressure, a change in the layer thickness of the material. This creates the risk of a short circuit of the two electrodes. This can also occur during operation of the display system, in particular in the case of locally acting pressure, for example due to finger pressure or a strong bending of the display system. At the same time, the lead to locally altered electro-optical properties such as energy consumption, discoloration or contrast.
- the object of the present invention is therefore to avoid the risk of a short circuit in a flexible display ⁇ system.
- Another object of the present invention is to provide an electrochromic paste for a flexible display system with a minimum thickness.
- Another object is to provide a flexible display system with an optically homogeneous appearance and / or with a minimum response time.
- At least one of these questions Aufga ⁇ is dissolved ben by an electrochromic paste having the features of Pa ⁇ tent lacs 1 and / or by a display system having the features of claim 7 and / or by a method of manufacturing a display system with the features of claim 11 , 200511855
- an electrochromic paste for flexible display systems which has at least one solid additive for the structural stabilization of the electrochromic paste.
- a flexible display system with the following features: an at least partially flexible first electrode; - one on top of the first electrode layer arranged at least partly least one electrochromic paste to ⁇ contains a solid additive for structural stabilization of the electrochromic paste; and a second electrode arranged above the layer and at least sectionally bendable.
- the invention provides a method for the manufacture ⁇ lung proposed a flexible display system, comprising the steps of:
- the solid additive acts as a spacer.
- an increased pressure when applying the counter electrode is made possible.
- the risk of the electrochromic paste is reduced. 200511855
- the mechanical-electrical properties of the electrochromic paste are improved according to the invention in that a meeting (short circuit) of the planar electrodes and thus a malfunction of the display system is avoided.
- a meeting (short circuit) of the planar electrodes and thus a malfunction of the display system is avoided.
- the flexibility or pliability of An ⁇ show system is maintained.
- the spacers can ensure a homogeneous current flow and therefore a constant energy consumption of the display system, thus also improving the electrical properties of the display system.
- the electrochromic layer can be made thinner than before by the mechanical reinforcement of the display system against short circuiting. This further leads to a faster response of the display system.
- the optical properties and visual shafts, in particular the behavior of the contrast adosys ⁇ tems be stabilized.
- the electrochromic paste is liquid or viscous in a first state of aggregation and solid in a second state of aggregation.
- the electrochromic paste is processed liquid or viscous.
- the electrochromic paste is formed as a formed as a foil electrolyte. 200511855
- the electrochromic paste contains a crosslinkable polymer and / or a one-component plastic.
- the addition of solids is chemically largely inert.
- the solid additive is selected from the group consisting of glass sphere, glass hollow sphere, ceramic sphere, glass fiber, glass fabric and their combinations .
- the weight percentage and / or the percentage Volumensan- part of the solid additive of the electrochromic paste ⁇ is chosen such that a thickness of minimizing layer to be produced in response to a predetermined bending stiffness of the Ad ⁇ weighing system.
- a minimum layer thickness and thus also a minimum thickness of the display system can be achieved.
- the first electrode is formed as a visual electrode ei ⁇ NEN with a transparent, metallic and / or organic conductors see coated material containing transparent plastic.
- the view electrode is on the side facing the viewer ⁇ facing side of the display system arranged and must therefore be transparent or made transparent, so that the viewer can perceive color changes of the electrochromic layer or paste.
- the second electrode is designed as a counter electrode to the first electrode, wherein the counter electrode contains a plastic coated with a metallic and / or organic conductor material.
- the conductor material of the viewing electrode PEDOT and / or indium tin oxide and / or the conductor material of the counter electrode comprises gold and / or copper and / or indium tin oxide and / or PEDOT and / or carbon black, which is applied to a plastic film of PET and / or polyamide.
- the display system is formed as a display or as a screen or as stand-ne display panel or a color-changeable housing ⁇ .
- Figure 1 is a schematic view of a preferred example of the display guidance from ⁇ invention ⁇ system.
- Figure 2 is a schematic flow diagram of a Favor ⁇ th embodiment of the method according to the invention.
- FIG. 1 shows a schematic view of a preferred exemplary embodiment of the display system 2 according to the invention.
- Figure 1 shows the invention Ad ⁇ weighing system 2 upon application of a counter electrode 5 by laminating kidney by means of a laminating roller. 6
- the flexible display system 2 comprises a flexible first electrode 4, a 4 applied above the first electric ⁇ de layer that contains an electrochromic paste 1, and above the electrochromic paste 1 applied flexible second electrode 5 on.
- the electrochromic paste 1 is provided with at least one solid additive 3 for the structural stabilization of the electrochromic paste 1. 200511855
- the electrochromic paste 1 is preferably liquid or vis ⁇ kos processable. It is designed, for example, as a crosslinkable polymer or as a one-component plastic. Another possibility is the electrochromic
- Form paste 1 as an electrolyte which is made, for example, as a film.
- the solid additive 3 is in particular ⁇ chemically inert.
- the solids add 3 has one or more individual A ⁇ on units which are selected from the group consisting of glass ball glass ⁇ hollow spheres, ceramic ball, glass fiber, glass fabrics and their combinations ⁇ Kom.
- the single ⁇ NEN of solid additive 3 each have a tunable reserved volume, so that the thickness of the layer is adjustable from electrochromic paste.
- the first electrode 4 is formed as a reformelektro ⁇ de.
- the viewing electrode 4 consists of a transparent plastic coated with a transparent, metallic and / or organic conductor material.
- the second electrode 5 is formed for example as a counter electrode to the sighting electrode 4 and contains a coated with egg ⁇ nem metallic and / or organic conductor material plastic.
- the conductor material of the viewing electrode 4 is formed from a PEDOT material and / or from an indium-tin-oxide (I-TO).
- the conductor material of the counter electrode 5 ent ⁇ holds, for example, gold, copper, indium tin oxide (ITO) and / or PEDOT.
- the carrier plastic of the counter electrode 5 is in particular made of PET or polyamide.
- the display system 2 is a display, a screen ⁇ screen, a display panel for promotional purposes or a farbverän ⁇ derliches housing. 200511855
- FIG. 2 shows a schematic flow diagram of a preferred exemplary embodiment of the method according to the invention for producing a flexible display system 2.
- the method according to the invention has the following method steps a to c:
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
Description
Beschreibungdescription
Elektrochrome Paste für biegsame Anzeigesysteme, Anzeigsystem und HerstellungsverfahrenElectrochromic paste for flexible display systems, display system and manufacturing process
Die Erfindung betrifft eine elektrochrome Paste für biegsame Anzeigesysteme, ein biegsames Anzeigsystem mit einer solchen elektrochromen Paste und ein Herstellungsverfahren für ein solches biegsames Anzeigesystem.The invention relates to an electrochromic paste for flexible display systems, a flexible display system with such an electrochromic paste, and a manufacturing method for such a flexible display system.
Das technische Gebiet der Erfindung betrifft biegsame Anzei¬ gesysteme, insbesondere biegsame Displays. Solche Displays basieren auf dem elektrochromen Effekt, der in vielen organischen Materialien auftritt. Elektrochromie ist die Eigen- schaft eines Stoffes aufgrund eines elektrischen Impulses seine Farbe zu verändern. Der elektrochrome Effekt besteht aus einer Veränderung der Absorptions- oder Reflexionseigenschaften eines Materials als Folge einer reversiblen Oxidati- on oder Reduktion (Redox-System) .The technical field of the invention relates to flexible Ad ¬ gesysteme, in particular flexible displays. Such displays are based on the electrochromic effect that occurs in many organic materials. Electrochromism is the property of a substance due to an electrical impulse to change its color. The electrochromic effect consists of a change in the absorption or reflection properties of a material as a result of a reversible oxidation or reduction (redox system).
Biegsame Anzeigesysteme auf der Basis elektrochromer Materia¬ lien zeichnen sich insbesondere dadurch aus, dass der nötige Schichtaufbau zur Herstellung eines solchen Displays sehr einfach gestaltet werden kann. Durch die geringe Gesamtdicke wird dabei die Biegefähigkeit und Flexibilität des Displays erreicht. Der Display-Aufbau besteht im Wesentlichen aus drei aufeinander angeordneten Schichten. Dabei ist zwischen einer Sichtelektrode und einer Gegenelektrode eine elektrochrome Schicht angeordnet.Flexible display systems based electrochromic material ¬ lien are distinguished in particular by the fact that the required layer structure can be easily designed for the production of such displays. Due to the low total thickness, the flexibility and flexibility of the display is achieved. The display structure essentially consists of three layers arranged on top of each other. In this case, an electrochromic layer is arranged between a viewing electrode and a counter electrode.
Bei kleinen Flächen des Anzeigesystems im Bereich von wenigen Quadratmillimetern verleiht der Schichtaufbau als solches dem Anzeigesystem üblicherweise eine ausreichende mechanische Stabilität. Bei größer werdenden Flächen allerdings fehlt im Innenbereich eine unmittelbare Berandung und je nach Viskosi¬ tät und Kapillareffekt des verwendeten elektrochromen Materials oder der elektrochromen Paste treten die folgenden Probleme auf. 200511855For small areas of the display system in the range of a few square millimeters, the layer structure as such usually gives the display system sufficient mechanical stability. In growing areas but missing in the inner region a direct confinement and depending on the viscometers ¬ ty and capillary effect of the electrochromic material used or the electrochromic paste occur the following problems. 200511855
Durch die Möglichkeit des Verfließens der elektrochromen Pas¬ te über die Gesamtfläche des Anzeigesystems, zum Beispiel während des Herstellungsprozesses zur Aufbringung der zweiten Elektrode beispielsweise durch Aufwalzen oder Laminieren tritt aufgrund des einwirkenden Druckes eine Veränderung der Schichtdicke des Materials auf. Dadurch besteht die Gefahr eines Kurzschlusses der beiden Elektroden. Dies kann auch im Betrieb des Anzeigesystems, insbesondere bei lokal einwirken- dem Druck zum Beispiel durch Fingerdruck oder ein starkes Verbiegen des Anzeigesystems auftreten. Gleichzeitig führt die zu lokal veränderten elektro-optischen Eigenschaften wie Energieverbrauch, Verfärbung oder Kontrast führen.Due to the possibility of flow of the electrochromic Pas ¬ te over the entire surface of the display system, for example during the manufacturing process for applying the second electrode, for example by rolling or laminating occurs due to the applied pressure, a change in the layer thickness of the material. This creates the risk of a short circuit of the two electrodes. This can also occur during operation of the display system, in particular in the case of locally acting pressure, for example due to finger pressure or a strong bending of the display system. At the same time, the lead to locally altered electro-optical properties such as energy consumption, discoloration or contrast.
Die Aufgabe der vorliegenden Erfindung besteht daher darin, die Gefahr eines Kurzschlusses bei einem biegsamen Anzeige¬ system zu vermeiden.The object of the present invention is therefore to avoid the risk of a short circuit in a flexible display ¬ system.
Eine weitere Aufgabe der vorliegenden Erfindung ist, eine elektrochrome Paste für ein biegsames Anzeigesystem mit einer minimalen Dicke bereitzustellen.Another object of the present invention is to provide an electrochromic paste for a flexible display system with a minimum thickness.
Außerdem ist es eine weitere Aufgabe der Erfindung, ein bieg¬ sames Anzeigesystem bereitzustellen, das einen konstanten Energieverbrauch und/oder eine konstante Fläche aufweist.Moreover, it is another object of the invention to provide a bendable ¬ Sames display system which has a constant power consumption and / or a constant area.
Eine weitere Aufgabe ist es, ein biegsames Anzeigesystem mit einem optisch homogenen Erscheinungsbild und/oder mit einer minimalen Ansprechzeit bereitzustellen.Another object is to provide a flexible display system with an optically homogeneous appearance and / or with a minimum response time.
Erfindungsgemäß wird zumindest eine dieser gestellten Aufga¬ ben durch eine elektrochrome Paste mit den Merkmalen des Pa¬ tentanspruchs 1 und/oder durch ein Anzeigesystem mit den Merkmalen des Patentanspruches 7 und/oder durch ein Verfahren zur Herstellung eines Anzeigesystems mit den Merkmalen des Patentanspruches 11 gelöst. 200511855According to the invention at least one of these questions Aufga ¬ is dissolved ben by an electrochromic paste having the features of Pa ¬ tentanspruchs 1 and / or by a display system having the features of claim 7 and / or by a method of manufacturing a display system with the features of claim 11 , 200511855
Erfindungsgemäß wird eine elektrochrome Paste für biegsame Anzeigesysteme vorgeschlagen, die zumindest einen Feststoff- Zusatz zur strukturellen Stabilisierung der elektrochromen Paste aufweist.According to the invention, an electrochromic paste for flexible display systems is proposed, which has at least one solid additive for the structural stabilization of the electrochromic paste.
Weiter ist erfindungsgemäß ein biegsames Anzeigesystem mit den folgenden Merkmalen vorgesehen: eine zumindest abschnittsweise biegsame erste Elektrode; - eine oberhalb der ersten Elektrode angeordnete Schicht, die zumindest teilweise eine elektrochrome Paste mit zu¬ mindest einem Feststoff-Zusatz zur strukturellen Stabilisierung der elektrochromen Paste enthält; und eine oberhalb der Schicht angeordnete, zumindest ab¬ schnittsweise biegsame zweite Elektrode.Furthermore, according to the invention, a flexible display system with the following features is provided: an at least partially flexible first electrode; - one on top of the first electrode layer arranged at least partly least one electrochromic paste to ¬ contains a solid additive for structural stabilization of the electrochromic paste; and a second electrode arranged above the layer and at least sectionally bendable.
Des Weiteren wird erfindungsgemäß ein Verfahren zur Herstel¬ lung eines biegsamen Anzeigesystems vorgeschlagen, das die folgenden Schritte aufweist:Furthermore, the invention provides a method for the manufacture ¬ lung proposed a flexible display system, comprising the steps of:
Bereitstellen einer zumindest abschnittsweise biegsamen ersten Elektrode;Providing an at least partially flexible first electrode;
Aufbringen einer elektrochromen Paste mit zumindest einem Feststoff-Zusatz zur strukturellen Stabilisierung der elektrochromen Paste zur Erzeugung einer Schicht oberhalb der ersten Elektrode; und - Aufbringen einer zumindest abschnittsweise biegsamen zwei¬ ten Elektrode oberhalb der erzeugten Schicht.Applying an electrochromic paste having at least one solid additive for structurally stabilizing the electrochromic paste to form a layer above the first electrode; and - applying an at least partially bendable two ¬ th electrode above the layer produced.
Die Vorteile der vorliegenden Erfindung, die sich durch Beimengung des Feststoff-Zusatzes zu der elektrochromen Paste ergeben, liegen im Bereich der Herstellung sowie in der Verbesserung der mechanischen, elektrischen und optischen Eigenschaften des Anzeigesystems.The advantages of the present invention, which result from incorporation of the solid additive into the electrochromic paste, are in the area of manufacture as well as in the improvement of the mechanical, electrical and optical properties of the display system.
Vorteilhafterweise wirkt der Feststoffzusatz als Abstandshal- ter. Somit wird bei der Herstellung in einem Foliendruckverfahren ein erhöhter Druck beim Aufbringen der Gegenelektrode ermöglicht. Außerdem wird die Gefahr des VerfHeßens der elektrochromen Paste verringert. 200511855Advantageously, the solid additive acts as a spacer. Thus, in the production in a film printing method, an increased pressure when applying the counter electrode is made possible. In addition, the risk of the electrochromic paste is reduced. 200511855
Die mechanisch-elektrischen Eigenschaften der elektrochromen Paste werden erfindungsgemäß dahingehend verbessert, dass ein Aufeinandertreffen (Kurzschluss ) der flächigen Elektroden und damit eine Fehlfunktion des Anzeigesystems vermieden wird. Dabei bleibt aber die Flexibilität oder Biegsamkeit des An¬ zeigesystems erhalten.The mechanical-electrical properties of the electrochromic paste are improved according to the invention in that a meeting (short circuit) of the planar electrodes and thus a malfunction of the display system is avoided. Here, however, the flexibility or pliability of An ¬ show system is maintained.
Durch die Abstandshalter lässt sich ein homogener Stromfluss und daher ein konstanter Energieverbrauch des Anzeigesystems sicherstellen, sodass sich auch die elektrischen Eigenschaften des Anzeigesystems verbessern. Außerdem kann durch die mechanische Verstärkung des Anzeigesystems gegen Kurzschluss die elektrochrome Schicht dünner als bisher ausgelegt werden. Dies führt des Weiteren zu einem schnelleren Ansprechen des Anzeigesystems .The spacers can ensure a homogeneous current flow and therefore a constant energy consumption of the display system, thus also improving the electrical properties of the display system. In addition, the electrochromic layer can be made thinner than before by the mechanical reinforcement of the display system against short circuiting. This further leads to a faster response of the display system.
Durch Vermeidung von Schichtdickeschwankungen und Einflüssen durch äußeren Druck werden die optischen und visuellen Eigen- Schäften, insbesondere das Kontrastverhalten des Anzeigesys¬ tems stabilisiert.By avoiding thickness fluctuations and influences due to external pressure, the optical properties and visual shafts, in particular the behavior of the contrast Anzeigesys ¬ tems be stabilized.
Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindungen ergeben sich aus den Unteransprüchen sowie der Be- Schreibung unter Bezugnahme auf die Zeichnungen.Advantageous embodiments and further developments of the invention will become apparent from the dependent claims and the description with reference to the drawings.
Gemäß einer bevorzugten Ausgestaltung der Erfindung ist die elektrochrome Paste in einem ersten Aggregatszustand flüssig oder viskos und in einem zweiten Aggregatszustand fest. Ins- besondere wird die elektrochrome Paste flüssig oder viskos verarbeitet .According to a preferred embodiment of the invention, the electrochromic paste is liquid or viscous in a first state of aggregation and solid in a second state of aggregation. In particular, the electrochromic paste is processed liquid or viscous.
Gemäß einer weiteren bevorzugten Ausgestaltung ist die elektrochrome Paste als ein als Folie ausgebildeter Elektrolyt ausgebildet. 200511855According to a further preferred embodiment, the electrochromic paste is formed as a formed as a foil electrolyte. 200511855
Gemäß einer weiteren bevorzugten Ausgestaltung enthält die elektrochrome Paste ein vernetzbares Polymer und/oder einen Ein-Komponenten-Kunststoff .According to a further preferred embodiment, the electrochromic paste contains a crosslinkable polymer and / or a one-component plastic.
Gemäß einer weiteren bevorzugten Ausgestaltung ist der Feststoff-Zusatz chemisch weitgehend inert.According to a further preferred embodiment, the addition of solids is chemically largely inert.
Gemäß einer weiteren bevorzugten Ausgestaltung ist der Feststoff-Zusatz aus der Gruppe bestehend aus Glaskugel, Glas- hohlkugel, Keramikkugel, Glasfaser, Glasgewebe und deren Kom¬ binationen ausgewählt.According to a further preferred embodiment, the solid additive is selected from the group consisting of glass sphere, glass hollow sphere, ceramic sphere, glass fiber, glass fabric and their combinations .
Gemäß einer weiteren bevorzugten Ausgestaltung wird der prozentuale Gewichtsanteil und/oder der prozentuale Volumensan- teil des Feststoff-Zusatzes an der elektrochromen Paste der¬ art gewählt, dass eine Dicke der zu erzeugenden Schicht in Abhängigkeit einer vorbestimmten Biegesteifigkeit des Anzei¬ gesystem minimiert wird. Somit kann vorteilhafterweise eine minimale Schichtdicke und damit auch eine minimale Dicke des Anzeigesystems erreicht werden.According to a further preferred embodiment, the weight percentage and / or the percentage Volumensan- part of the solid additive of the electrochromic paste ¬ is chosen such that a thickness of minimizing layer to be produced in response to a predetermined bending stiffness of the Ad ¬ weighing system. Thus, advantageously, a minimum layer thickness and thus also a minimum thickness of the display system can be achieved.
Gemäß einer bevorzugten Weiterbildung der Erfindung ist die erste Elektrode als eine Sichtelektrode ausgebildet, die ei¬ nen mit einem transparenten, metallischen und/oder organi- sehen Leitermaterial beschichteten, transparenten Kunststoff enthält. Die Sichtelektrode ist auf der dem Betrachter zuge¬ wandten Seite des Anzeigesystems angeordnet und muss daher transparent oder durchsichtig ausgebildet sein, sodass der Betrachter farbliche Veränderungen der elektrochromen Paste oder Schicht wahrnehmen kann.According to a preferred development of the invention the first electrode is formed as a visual electrode ei ¬ NEN with a transparent, metallic and / or organic conductors see coated material containing transparent plastic. The view electrode is on the side facing the viewer ¬ facing side of the display system arranged and must therefore be transparent or made transparent, so that the viewer can perceive color changes of the electrochromic layer or paste.
Gemäß einer weiteren bevorzugten Weiterbildung ist die zweite Elektrode als eine Gegenelektrode zu der ersten Elektrode ausgebildet ist, wobei die Gegenelektrode einen mit einem me- tallischen und/oder organischen Leitermaterial beschichteten Kunststoff enthält. 200511855According to a further preferred development, the second electrode is designed as a counter electrode to the first electrode, wherein the counter electrode contains a plastic coated with a metallic and / or organic conductor material. 200511855
Gemäß einer weiteren bevorzugten Weiterbildung weist das Leitermaterial der Sichtelektrode PEDOT und/oder Indium-Zinn- Oxyd und/oder das Leitermaterial der Gegenelektrode Gold und/oder Kupfer und/oder Indium-Zinn-Oxyd und/oder PEDOT und/oder Carbon Black auf, das auf einer Kunststofffolie aus PET und/oder Polyamid aufgebracht ist.According to a further preferred development, the conductor material of the viewing electrode PEDOT and / or indium tin oxide and / or the conductor material of the counter electrode comprises gold and / or copper and / or indium tin oxide and / or PEDOT and / or carbon black, which is applied to a plastic film of PET and / or polyamide.
Gemäß einer weiteren bevorzugten Weiterbildung ist das Anzeigesystem als ein Display oder als ein Bildschirm oder als ei- ne Anzeigetafel oder als ein farbveränderliches Gehäuse aus¬ gebildet .According to a further preferred embodiment, the display system is formed as a display or as a screen or as stand-ne display panel or a color-changeable housing ¬.
Die Erfindung wird nachfolgend anhand der schematischen Figu¬ ren der Zeichnung angegebenen Beispielen näher erläutert. Es zeigen:The invention will be explained in more detail with reference to the schematic figures ren of the drawings given examples. Show it:
Figur 1 eine schematische Ansicht eines bevorzugten Aus¬ führungsbeispiels des erfindungsgemäßen Anzeige¬ system; undFigure 1 is a schematic view of a preferred example of the display guidance from ¬ invention ¬ system; and
Figur 2 ein schematisches Ablaufdiagramm eines bevorzug¬ ten Ausführungsbeispiels des erfindungsgemäßen Verfahrens .Figure 2 is a schematic flow diagram of a Favor ¬ th embodiment of the method according to the invention.
In Figur 1 ist eine schematische Ansicht eines bevorzugten Ausführungsbeispiels des erfindungsgemäßen Anzeigesystems 2 dargestellt. Figur 1 zeigt dabei das erfindungsgemäße Anzei¬ gesystem 2 beim Aufbringen einer Gegenelektrode 5 durch Lami- nieren mittels einer Laminierwalze 6.FIG. 1 shows a schematic view of a preferred exemplary embodiment of the display system 2 according to the invention. Figure 1 shows the invention Ad ¬ weighing system 2 upon application of a counter electrode 5 by laminating kidney by means of a laminating roller. 6
Das erfindungsgemäße biegsame Anzeigesystem 2 weist eine biegsame erste Elektrode 4, eine oberhalb der ersten Elektro¬ de 4 aufgebrachte Schicht, die eine elektrochromen Paste 1 enthält, und eine oberhalb der elektrochromen Paste 1 aufge- brachte biegsame zweite Elektrode 5 auf. Dabei ist die elekt- rochrome Paste 1 mit zumindest einem Feststoff-Zusatz 3 zur strukturellen Stabilisierung der elektrochromen Paste 1 versehen. 200511855The flexible display system 2 according to the invention comprises a flexible first electrode 4, a 4 applied above the first electric ¬ de layer that contains an electrochromic paste 1, and above the electrochromic paste 1 applied flexible second electrode 5 on. In this case, the electrochromic paste 1 is provided with at least one solid additive 3 for the structural stabilization of the electrochromic paste 1. 200511855
Die elektrochrome Paste 1 ist vorzugsweise flüssig oder vis¬ kos verarbeitbar. Sie ist beispielsweise als ein vernetzbares Polymer oder als ein Ein-Komponenten-Kunststoff ausgebildet. Eine weitere Möglichkeit besteht darin, die elektrochromeThe electrochromic paste 1 is preferably liquid or vis ¬ kos processable. It is designed, for example, as a crosslinkable polymer or as a one-component plastic. Another possibility is the electrochromic
Paste 1 als einen Elektrolyten auszubilden, der beispielsweise als Folie gefertigt ist. Der Feststoff-Zusatz 3 ist insbe¬ sondere chemisch inert.Form paste 1 as an electrolyte, which is made, for example, as a film. The solid additive 3 is in particular ¬ chemically inert.
Der Feststoff-Zusatz 3 weist eine oder mehrere einzelne Ein¬ heiten auf, die aus der Gruppe bestehend aus Glaskugel, Glas¬ hohlkugel, Keramikkugel, Glasfaser, Glasgewebe und deren Kom¬ binationen ausgewählt werden. Vorzugsweise weisen die einzel¬ nen Einheiten des Feststoff-Zusatzes 3 jeweils ein vorbe- stimmbares Volumen auf, sodass die Dicke der Schicht aus elektrochromer Paste 1 einstellbar ist.The solids add 3 has one or more individual A ¬ on units which are selected from the group consisting of glass ball glass ¬ hollow spheres, ceramic ball, glass fiber, glass fabrics and their combinations ¬ Kom. Preferably, the single ¬ NEN of solid additive 3 each have a tunable reserved volume, so that the thickness of the layer is adjustable from electrochromic paste. 1
Vorzugsweise ist die erste Elektrode 4 als eine Sichtelektro¬ de ausgebildet. Beispielsweise besteht die Sichtelektrode 4 aus einem mit einem transparenten, metallischen und/oder organischen Leitermaterial beschichteten, transparenten Kunststoff.Preferably, the first electrode 4 is formed as a Sichtelektro ¬ de. For example, the viewing electrode 4 consists of a transparent plastic coated with a transparent, metallic and / or organic conductor material.
Die zweite Elektrode 5 ist beispielsweise als Gegenelektrode zu der Sichtelektrode 4 ausgebildet und enthält einen mit ei¬ nem metallischen und/oder organischen Leitermaterial beschichteten Kunststoff.The second electrode 5 is formed for example as a counter electrode to the sighting electrode 4 and contains a coated with egg ¬ nem metallic and / or organic conductor material plastic.
Vorzugsweise ist das Leitermaterial der Sichtelektrode 4 aus einem PEDOT-Material und/oder aus einem Indium-Zinn-Oxyd (I- TO) ausgebildet. Das Leitermaterial der Gegenelektrode 5 ent¬ hält zum Beispiel Gold, Kupfer, Indium-Zinn-Oxyd (ITO) und/oder PEDOT. Der Träger-Kunststoff der Gegenelektrode 5 ist insbesondere aus PET oder aus Polyamid gefertigt.Preferably, the conductor material of the viewing electrode 4 is formed from a PEDOT material and / or from an indium-tin-oxide (I-TO). The conductor material of the counter electrode 5 ent ¬ holds, for example, gold, copper, indium tin oxide (ITO) and / or PEDOT. The carrier plastic of the counter electrode 5 is in particular made of PET or polyamide.
Beispielsweise ist das Anzeigesystem 2 ein Display, ein Bild¬ schirm, eine Anzeigetafel für Werbezwecke oder ein farbverän¬ derliches Gehäuse. 200511855For example, the display system 2 is a display, a screen ¬ screen, a display panel for promotional purposes or a farbverän ¬ derliches housing. 200511855
Figur 2 zeigt ein schematisches Ablaufdiagramm eines bevorzugten Ausführungsbeispiels des erfindungsgemäßen Verfahrens zur Herstellung eines biegsamen Anzeigesystems 2. Das erfin- dungsgemäße Verfahren weist die folgenden Verfahrensschritte a bis c auf:FIG. 2 shows a schematic flow diagram of a preferred exemplary embodiment of the method according to the invention for producing a flexible display system 2. The method according to the invention has the following method steps a to c:
Verfahrensschritt a:Process step a:
Bereitstellen einer zumindest abschnittsweise biegsamen ers- ten Elektrode 4.Provision of an at least partially flexible first electrode 4.
Verfahrensschritt b:Process step b:
Aufbringen einer elektrochromen Paste 1 mit zumindest einem Feststoff-Zusatz 3, der zur strukturellen Stabilisierung der elektrochromen Paste 1 dient, sodass eine Schicht oberhalb der ersten Elektrode 4 erzeugt wird.Application of an electrochromic paste 1 with at least one solid additive 3, which serves for the structural stabilization of the electrochromic paste 1, so that a layer is produced above the first electrode 4.
Verfahrensschritt c:Process step c:
Aufbringen einer zumindest abschnittsweise biegsamen zweiten Elektrode 5 oberhalb der erzeugten Schicht 1.Applying an at least partially flexible second electrode 5 above the layer 1 produced.
Obwohl die vorliegende Erfindung vorstehend anhand der bevor¬ zugten Ausführungsbeispiele beschrieben wurde, ist sie darauf nicht beschränkt, sondern auf vielfältige Art und Weise modi- fizierbar. Beispielsweise ist es denkbar, andere Feststoff- Zusätze als die genannten zu verwenden, ohne die erfinderische Idee der vorliegenden Erfindung zu verlassen. Insbesondere kann das erfindungsgemäße Versehen von elektrochromen Materialien mit Feststoff-Zusätzen zu ihrer strukturellen Stabilisierung auch bei voll elektronischen Pasten (pH- Pasten) eingesetzt werden. Although the present invention ferred embodiments described above with reference to prior ¬, it is not limited to this, but in many ways modi- fizierbar. For example, it is conceivable to use solid additives other than those mentioned without departing from the inventive idea of the present invention. In particular, the inventive provision of electrochromic materials with solid additives for their structural stabilization can also be used with fully electronic pastes (pH pastes).
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005038884 | 2005-08-17 | ||
| DE102005038884.1 | 2005-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007020209A1 true WO2007020209A1 (en) | 2007-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2006/065121 Ceased WO2007020209A1 (en) | 2005-08-17 | 2006-08-07 | Electrochrome paste for flexible display systems, display systems and method for the production thereof |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007020209A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397823A (en) * | 1992-09-09 | 1995-03-14 | Fuji Xerox Co., Ltd. | Functional film-forming paste composition and process for forming functional film |
| EP1056097A2 (en) * | 1999-05-26 | 2000-11-29 | Basf Aktiengesellschaft | Optically transparent solid polymeric electrolyte |
| WO2002075441A2 (en) * | 2001-03-19 | 2002-09-26 | Dow Global Technologies Inc. | Electrochromic display device and compositions useful in making such devices |
-
2006
- 2006-08-07 WO PCT/EP2006/065121 patent/WO2007020209A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397823A (en) * | 1992-09-09 | 1995-03-14 | Fuji Xerox Co., Ltd. | Functional film-forming paste composition and process for forming functional film |
| EP1056097A2 (en) * | 1999-05-26 | 2000-11-29 | Basf Aktiengesellschaft | Optically transparent solid polymeric electrolyte |
| WO2002075441A2 (en) * | 2001-03-19 | 2002-09-26 | Dow Global Technologies Inc. | Electrochromic display device and compositions useful in making such devices |
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