DE3223615A1 - Electromechanical transducer - Google Patents
Electromechanical transducerInfo
- Publication number
- DE3223615A1 DE3223615A1 DE19823223615 DE3223615A DE3223615A1 DE 3223615 A1 DE3223615 A1 DE 3223615A1 DE 19823223615 DE19823223615 DE 19823223615 DE 3223615 A DE3223615 A DE 3223615A DE 3223615 A1 DE3223615 A1 DE 3223615A1
- Authority
- DE
- Germany
- Prior art keywords
- electrode
- transparent
- temperature
- piezoelectric
- platinum
- 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.)
- Withdrawn
Links
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000011888 foil Substances 0.000 abstract 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- -1 gold or silver Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/06—Forming electrodes or interconnections, e.g. leads or terminals
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Abstract
Description
Elektromechanischer WandlerElectromechanical converter
Die Erfindung bezieht sich auf einen elektromechanischen Wandler mit wenigstens einem piezoelektrischen Wandlerelement und einem dünnen Grundkörper, vorzugsweise einer Folie, aus einem durchsichtigen piezoelektrischen Kunststoff. Der Grundkörper ist an seiner Flachseite mit jeweils wenigstens einer metallischen Elektrode versehen.The invention relates to an electromechanical converter at least one piezoelectric transducer element and a thin base body, preferably a film made of a transparent piezoelectric plastic. The base body is on its flat side with at least one metallic each Provided electrode.
In der Anzeigetechnik werden bekanntlich Flüssigkristallanzeigen verwendet, die mit geringer Energie betrieben werden kannen, Die Ansteuerspannung liegt im Bereich von einigen Volt und der Leistungsbedarf pro anzeigende Fläche beträgt lediglich etwa 1 bis 10 µw/cm2. , Ein Anzeigesegnient wird jeweils durch den anteil der Überdeckungsfläche zweier sich auf Front- und Druckplatte gegenüberliegender transparenter Elektroden gebildet denen zur Ansteuerung eine Wechsel spannung zugeführt wird (Siemens Components 19 (1981), Heft 5, Seite 160) e Die transparenten Elektroden können beispielsweise aus Indiumoxidschichten bestehen, die bei verhältnismäßig hohen Temperaturen getempert werden müssen.As is known, liquid crystal displays are used in display technology, which can be operated with low energy, the control voltage is in Range of a few volts and the power requirement per display area is only about 1 to 10 µw / cm2. , An advertisement is indicated in each case by the proportion of the coverage area two opposed transparent electrodes on the front and pressure plate formed to which an alternating voltage is supplied for control (Siemens Components 19 (1981), No. 5, page 160) e The transparent electrodes can, for example consist of indium oxide layers that are annealed at relatively high temperatures Need to become.
Es ist ferner bekannt, daß auf verschiedenen technischen Sachgebieten, beispielsweise in hochfrequenztechnischen und elektroakustischen Einrichtungen, piezoelektrische Elemente verwendet werden. Der vorzugsweise flache piezoelektrische Grundkörper, insbesondere eine piezoelektrische Folie, ist im allgemeinen in Richtung seiner Dicke polarisiert und an den Flachseiten jeweils mit einer Elektrode versehen, die mit einem Anschlußleter elektrisch leitend verbunden ist. Die elektrische Signalbildung erfolgt dlarch Drukeinwirkung auf die Flechseiten der Folie Ferner kann durch die Zuführung einer Wechsel spannung eine mechanische Schwingung erzeugt werden (US-Patent 3 940 637).It is also known that in various technical fields, for example in high-frequency and electroacoustic facilities, piezoelectric elements are used. The preferably flat piezoelectric Base body, in particular a piezoelectric film, is generally in the direction polarized with its thickness and on the flat sides one Electrode provided, which is electrically connected to a terminal. The electrical signal is generated by applying pressure to the flech sides The film can also be a mechanical voltage through the supply of an alternating voltage Vibration can be generated (U.S. Patent 3,940,637).
Der Erfindung liegt die Aufgabe zugrunde, einen elektromechanischen Wandler mit einer piezoelektrischen Folie aus einem durchsichtigen piezoelektrischen Kunststoff, vorzugsweise einem fluorhaltigen Polymer, insbesondere Polyvinylidenfluorid oder Polyvinylfluorid, anzugeben, der mit transparenten metallischen Elektroden versehen ist. Solche Folien können bekanntlich nur aus verhältnismäßig geringe Temperaturen erwärmt werden Die Erfindung beruht auf der Erkenntnis, daß sehr dünne Metallschichten zwar transparent sind und auf einer Unterlage gut haften, für Elektroden gebräuchliche Metalle, beispielsweise Gold oder Silber, neigen Jedoch bei sehr dünnen Schichten zu einer Insel-Sogtur mit entsprechend verminderter elektrischer Leitfähigkeit.The invention is based on the object of an electromechanical Transducer with a piezoelectric film made of a transparent piezoelectric Plastic, preferably a fluorine-containing polymer, in particular polyvinylidene fluoride or polyvinyl fluoride, to indicate the one with transparent metallic electrodes is provided. It is known that such films can only be produced from relatively low temperatures The invention is based on the knowledge that very thin metal layers Although they are transparent and adhere well to a surface, they are commonly used for electrodes Metals such as gold or silver, however, tend to be very thin layers to an island suction with correspondingly reduced electrical conductivity.
Die Erfindung besteht nun darin, daß als Elektrode eine Schicht aus einem Metall der Platin-Gruppe, beispielsweise Palladium oder Indium, vorzugsweise Platin, vorgesehen ist, deren Dicke 3Q nm nicht wesentlich überschreitet und vorzugsweise höchstens etwa 3 nm beträgt.The invention consists in that a layer is used as the electrode a metal from the platinum group, for example palladium or indium, preferably Platinum, is provided, the thickness of which does not significantly exceed 30 nm and preferably is at most about 3 nm.
Unter Umstanden kann es zweckmäßig sein, die Dicke auf höchstens 1 nm zu beschränken. Diese Schichten können durch Aufdampfen oder Aufsputtern bei einer Temperatur aufgebracht werden, die die Zimmertemperatur nicht wesentlich überschreitet und auf höchstens etwa 370 K begrenzt ist.Under certain circumstances it can be useful to reduce the thickness to a maximum of 1 nm to restrict. These layers can be achieved by vapor deposition or sputtering a temperature that does not significantly exceed room temperature and is limited to a maximum of about 370 K.
Diese Platinelektroden zeigen nur eine geringe Neigung zur Insel-Bildung und diese Neigung nimmt darüber hinaus mit atnehmender Temperatur ab. Es können deshalb bei der Herstellung dieser dünnen Platinelektroden vorzugsweise niedrige Temperaturen eingehalten werden.These platinum electrodes show only a slight tendency towards island formation and this tendency also decreases with decreasing temperature. It can therefore, when making these thin platinum electrodes, preferably low ones Temperatures are maintained.
5 Patentansprüche5 claims
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823223615 DE3223615A1 (en) | 1982-06-24 | 1982-06-24 | Electromechanical transducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823223615 DE3223615A1 (en) | 1982-06-24 | 1982-06-24 | Electromechanical transducer |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3223615A1 true DE3223615A1 (en) | 1983-12-29 |
Family
ID=6166755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19823223615 Withdrawn DE3223615A1 (en) | 1982-06-24 | 1982-06-24 | Electromechanical transducer |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3223615A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0361249A1 (en) * | 1988-09-26 | 1990-04-04 | E W D Electronic-Werke Deutschland Gmbh | Sound reproduction set for screens |
EP0528279A1 (en) * | 1991-08-09 | 1993-02-24 | Kureha Kagaku Kogyo Kabushiki Kaisha | Flexible piezoelectric device |
-
1982
- 1982-06-24 DE DE19823223615 patent/DE3223615A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0361249A1 (en) * | 1988-09-26 | 1990-04-04 | E W D Electronic-Werke Deutschland Gmbh | Sound reproduction set for screens |
WO1990003711A1 (en) | 1988-09-26 | 1990-04-05 | E W D Electronic-Werke Deutschland Gmbh | Loudspeaker |
EP0528279A1 (en) * | 1991-08-09 | 1993-02-24 | Kureha Kagaku Kogyo Kabushiki Kaisha | Flexible piezoelectric device |
US5288551A (en) * | 1991-08-09 | 1994-02-22 | Kureha Kagaku Kogyo Kabushiki Kaisha | Flexible piezoelectric device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0010771B1 (en) | Capacitance humidity sensing element | |
DE2411259B2 (en) | Process for manufacturing integrated circuits | |
DE2444220B2 (en) | Keyboard switch with a piezoelectric polymer film | |
DE2632520A1 (en) | LAMINATE FROM A POLYMER SUBSTRATE | |
DE69005214T2 (en) | Polyimide substrate with a textured surface and metal coating of such a substrate. | |
DE2921298A1 (en) | PYROELECTRIC INFRARED DETECTOR | |
DE2021264A1 (en) | Process for the production of discrete RC arrangements | |
DE102008004942A1 (en) | Multilayer element for electrochemical and/or electrically controllable device used in e.g. train, has contact element that penetrates through dielectric adhesive layer, and joins rear electrode and upper transparent surface electrode | |
DE102008051921A1 (en) | Multilayer system with contact elements and method for creating a contact element for a multilayer system | |
DE2644283B2 (en) | Method of making a thermoelectric !! Building block | |
DE2217737B2 (en) | Method for producing an electrical line system | |
DE3223615A1 (en) | Electromechanical transducer | |
DE2549861B2 (en) | METHOD OF APPLYING LOCALIZED CONTACTS ON A THIN-FILM CIRCUIT | |
DE3608010A1 (en) | METHOD FOR PRODUCING AN ELECTRICALLY CONDUCTIVE ADHESIVE CONNECTION | |
CH385486A (en) | Process for the production of a firm bond between workpieces made of halogenated polyethylenes and other materials | |
DE2837433A1 (en) | LIQUID CRYSTAL DISPLAY BOARD IN A MATRIX ARRANGEMENT | |
DE2313730C2 (en) | Process for the production of an optical display element with a nematic liquid-crystalline layer | |
DE2003802B2 (en) | Process for the production of an electroluminescent body and electroluminescent body produced thereafter | |
EP0007598A1 (en) | Method for the manufacture of an electrical film circuit on plastics foil | |
DE2534414A1 (en) | Thin film semiconductive magnetoresistor - of indium antimonide or arsenide formed from deposited elemental layers | |
DE1521157C3 (en) | Process for increasing the strength of the bond between thin layers | |
EP0278485B1 (en) | Process for making a digitalization board | |
DE1058805B (en) | Process for producing translucent and electrically conductive gold coatings | |
DE1279242B (en) | Electronic solid-state component for switching | |
DE2234679A1 (en) | METHOD OF MANUFACTURING THE ELECTRODES OF A GAS DISCHARGE DISPLAY DEVICE |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |