CN102044737A - Manufacturing method of film antenna - Google Patents

Manufacturing method of film antenna Download PDF

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CN102044737A
CN102044737A CN2009101811239A CN200910181123A CN102044737A CN 102044737 A CN102044737 A CN 102044737A CN 2009101811239 A CN2009101811239 A CN 2009101811239A CN 200910181123 A CN200910181123 A CN 200910181123A CN 102044737 A CN102044737 A CN 102044737A
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manufacture method
membrane electrode
contact panel
film
film antenna
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江国庆
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Abstract

The invention discloses a manufacturing method of a film antenna, comprising the following steps: preparing conductive gel, coating the conductive gel on the surface of a substrate to form a conductive film, and thermally treating the conductive film to form the film antenna, wherein the step of preparing the conductive gel comprises: preparing an olefin oxide and a metal compound. The olefin oxide comprises polyethylene oxide (PEO) which at least comprises In (NO)3.3H2O, In (Ac)3, SnCl2.2H2O, or Sn (C2O4).

Description

The manufacture method of film antenna
Technical field
The invention relates to a kind of antenna, especially about a kind of manufacture method of film antenna.
Background technology
In recent years Radio Transmission Technology be general development in all over the world, and the wireless device of the overwhelming majority as mobile phone, personal digital assistant and Digital Television etc., all need use the receiving system that receives transmission signal.Because the digitlization that information is transmitted, the various information as sound signal, image signal etc. of making are able to easily by processing such as personal computer, running gears, and by sound and image coding and decoding technology, more can promote the band compression of above-mentioned information category.And digital communication and digital communication energy are easy to manufacture and transmit the environment of this kind information to terminal installation effectively, for example audio and video data (AV data) are passed to a portable telephone.
Wireless transport module is to install or be located away from main device by connector, so that can be stored in the flash memory from the data of main device, and will be stored in data passes in the flash memory to main device.When it was mounted to main device, the outside outstanding antenna of this wireless transport module utilization partly carried out the signal exchange between main device and main frame or wireless system.Radio circuit, transmission line and antenna module are manufactured on the substrate of special design usually, purposes at these circuit is special, the control of keeping impedance operator is can not be ignored, so in these circuit, the length of transmission line and transmitting antenna just is the design considerations of key.Two important key factors that influence base material usefulness are dielectric constant (being called relative dielectric constant sometimes) and dielectric absorption (being called the dissipation coefficient sometimes), the transmission speed of its medium dielectric constant microwave medium decision signal in base material, and transmission line and other apply the signal receiving/transmission correlation length of the part on substrate.Transmit the consume that is caused and dielectric absorption is a signal in base material, this consume meeting increases greatly with the change of frequency.
Printing transmission line, passive circuit and be used for the emitting module of radio circuit one of them forms in following three kinds of modes usually.First kind is microstrip line (micro-strip) structure, is placed on signal line on the plate object surface and a conductive layer is provided, and this conductive layer is commonly referred to as ground plane.Second kind is buried microstrip line (buried micro-strip) structure, except its signal line is covered by a dielectric substrate material, all the other all with first kind of structural similarity.The third is strip line (strip-line) structure, and its signal line is to be clipped between two conduction (ground connection) faces, and antenna configurations is on the main plane of printed circuit board (PCB).Application for vehicle, the settling mode of this type systematic overwhelming majority is whip antenna is installed in roof, and with respect to the trend of Automobile Design now, be that these antenna is embedded in the vehicle structure, with reduce antenna for vehicle attractive in appearance go up and air force on influence.And, several telecommunications service are integrated into the cost that single antenna can reduce manufacturing.But the antenna frequency acceptance band comprises: frequency modulation (Frequency Modulation; FM), personal handy phone system (Personal Handyphone System; PHS), Wireless car aperture, global system for mobile communications (System For Mobile; GSM 900, GSM 1800), code division multiple access (Code Division Multiple Access; CDMA), general package formula wireless service (General Package Radio Service; GPRS), blue bud (Bluetooth), wireless network (Wireless Local Area Network; WLAN) and the frequency band of Digital Television.
If some antenna structure only can operate in default frequency band, and this is frequency limited in antenna characteristics thereby is not suitable for the cause of multifrequency running, and the material of antenna is nothing more than metal or alloy, will influence visibility on it the be formed at glass.The former material rising cost of metal improves in addition.
Summary of the invention
The invention relates to the manufacture method of film antenna with following feature.
A kind of film antenna manufacture method comprises and purchases Signa Gel, Signa Gel is coated on the substrate surface formed conductive film; This conductivity type film heat treatment is formed film antenna.Wherein conductivity gel configuration step comprises and purchases alkene type oxide metallizing thing.This alkene type oxide comprises polyethylene oxide (PEO), and polyethylene oxide (PEO) comprises In (NO) at least 33H 2O, In (Ac) 3, SnCl 22H 2O, or Sn (C 2O 4).Wherein metallic compound comprises indium, tin compound.Substrate comprises PCB, pottery, macromolecule, glass or fiber.
Among another embodiment, the present invention discloses a kind of film antenna manufacture method, comprises the formation inorganic polymer, utilizes inorganic matter to purchase gel; This gel coating is formed film on substrate surface; This film heat treatment is formed film antenna.Wherein precursors (precursor) is basic anhydride, inorganic salts and organic salt.This gel comprises SiO 2, TiO 2Or ZnO 2Inorganic salts comprise chloride or nitrate; Organic salt comprises acetate.
Advantage of the present invention will make the film antenna of manufacturing gained lighter, littler, more reduce cost and processing procedure simplification and environmental protection so utilize non-metallic material employing collosol and gel and coating to make antenna for not adopt the former material of valuable metal.Said method also can be as contact panel transparency electrode manufacture method, or display transparency electrode manufacture method.
Embodiment
The present invention discloses a kind of film antenna, and preferred embodiment of the present invention is included in and forms the electrically conducting transparent pattern on the object.The visual demand of one protective layer is coated on the electrically conducting transparent pattern.Object can comprise visor after hand-held device base material or housing, display surface, windshield, the vehicle, building window etc.In one embodiment, power supply is coupled optionally so far that antenna structure makes this electrically conducting transparent pattern can remove fog on glass or moisture so that heat energy or electric power to be provided.The antenna feed impedance coupling, wherein feed-in conduction transmission line is to make as the transmission line of 300 nurses difficult to understand, 50 nurses difficult to understand or 75 nurses difficult to understand.
The material of conduction pattern comprises the oxide with metal, wherein this metal be preferably one or more than be selected from gold, zinc, silver, palladium, platinum, rhodium, ruthenium, copper, iron, nickel, cobalt, tin, titanium, indium, aluminium, tantalum, gallium, germanium, antimony, and some conductive material made from the method is transparent, if and this antenna is attached on glassly, it will have the vision penetration power.Perhaps, this antenna can be formed on the housing of global positioning system (GPS), wireless mouse, Wireless Keyboard, remote controller, mobile computer or mobile phone or the like or the screen and can reduce screen effect.Can improve receiving system by spatial variability (space-diversity) or polarization variation technology.Also can adopt two or several antenna at this, and use its advantage of technology of the present invention to be that a plurality of antennas that are attached to same object can low-cost include different structures.This feed-in structure is to be the known technology in this area, and the structure of other antenna also can be applicable in the present invention identical field and spirit.
The manufacture method of antenna comprises purchases a substrate, and substrate can be preferably PET for PCB, pottery, macromolecule, glass, fiber (for example paper fiber) etc., its tool flexibility, and temperature can anti-more than 100 degree Celsius.Prepare coating solvent, its step comprises thereupon:
Form inorganic polymer (inorganic polymeric network) down in low temperature;
Convert this inorganic matter to gel under the temperature that is lower than this oxide fusing point, its course of reaction is as follows:
Solution-gel reaction
Figure B2009101811239D0000051
Figure B2009101811239D0000052
Figure B2009101811239D0000053
Figure B2009101811239D0000054
Figure B2009101811239D0000055
Figure B2009101811239D0000056
Si(OH) 4 SiO 2+2H 2O (6);
Precursors (precursor) can be basic anhydride (alk-oxides), [M (OR) n, R x-M (OR) N-x]; Inorganic salts (for example chloride, nitrate); Organic salt (for example acetate, acetylacetonate).Said procedure comprises solution and converts colloid to; And the displacement of basic species.Its course of reaction is as follows:
The basic anhydride gel reaction
Figure B2009101811239D0000057
Figure B2009101811239D0000059
Make TiO with sol-gel process (Sol-Gel) and method of spin coating (Spin coating) 2, add different proportion APTMS (SiO 2) work as TiO 2Intergranular adhesive increases TiO 2Intergranular contact area is to reduce interior resistance, crystal grain thinning.TiO 2It is big that the particle contact area becomes, and wherein adds the TiO of 5wt%APTMS 2Electrode, the preferable opto-electronic conversion of tool.For an embodiment, utilize said procedure can make the antenna coating solution, above-mentioned precursors can comprise Si (OC 2H 5) 4, Ti (OC 2H 5) 4Or Zr (OC 3H 7) 4Initial soln composition: basic anhydride: alcohol=1: 18-20, basic anhydride: water=1: 1-2 is preferably basic anhydride: alcohol: water=1: 19.3: 1.85, pH=3.5.More than can make SiO 2-TiO 2SiO 2-ZrO 2Coating can be adopted rotary coating, and per minute 2000 changes.
In another embodiment, can obtain the In oxide, itself and Sn processing can be got the ITO sol gel solution, will can get ito thin film after its rotary coating at In2O3.It is made embodiment and comprises polyethylene oxide PEOpoly (ethyleneoxide) solution that mixes 10wt% and 5wt% and In, Sn compound, for example In (NO) 33H 2O, In (Ac) 3, SnCl 22H 2O, or Sn (C 2O 4), afterwards with thermal decomposition process, temperature is 450 to 600 Celsius.Precursors Moore ratio is about 9: 1 (In/Sn).
After making its dryingization afterwards, can cut or be embossed into antenna pattern; Also can utilize fabrography, cooperate coating to make antenna pattern.The base material that has one patterned solution on the surface will make this solution drying via room temperature to Celsius 90 Temperature Treatment of spending, to obtain a transparency conducting layer.Continue, heat-treated about one to three hour or toasted the resistance that reduces film and promote its light transmittance with the temperature that is higher than 100 degree Celsius 180 degree for example Celsius to the temperature between 220 degree again with electromagnetic radiation irradiation.
The present invention discloses and to be attached to window, glass or the windshield transparent antenna structure on the one side at least.One transmission line can be led the pattern that coupling mechanism is coupled to antenna structure by nurse difficult to understand contact or an electric capacity or electricity.One dehumidifying power supply can by transmission line be coupled antenna structure so far with provide heat energy so far pattern remove fog or moisture on glass or the window.Therefore, in some cases, this structure can comprise dual-use function, as the device of a reception signal and demist or dehumidifying.
The material of the various embodiments described above can comprise conducting polymer, conductive carbon or conducting resinl and promotes electrical conductivity in other embodiments.Utilize non-metallic material will make device lighter, littler, reduce cost (not adopting the former material of valuable metal) and processing procedure is simplified.For example tradition all adopts copper material, and it is heavy and expensive.Opposite the present invention adopts non-metallic material as antenna.Non-metal antenna referred to herein as antenna body and does not adopt the former material of metal, non-not containing metal additive or particle.Above-mentioned material must see through the fabrication techniques of bat printing, and processing procedure is easy and do not pollute the environment than metal material, and traditional antenna adopts etching or plating pollution problem serious.And this film type antenna can be attached to irregular or plane surface not.In addition, the traditional antenna of hand-held device all is disposed on the printed circuit board (PCB), so very easily and cause interference between electronic building brick.But antenna can be removed on circuit board according to the present invention.If it is transparent, then can be attached at screen or glass or outer surface.
One embodiment is for adopting conducting polymer, it can utilize predecessor to make (precursor monomer), it is selected from plug fen (thiophenes), selenophen (selenophenes), tellurium fen (tellurophenes), pyrroles (pyrroles), aniline (anilines), Ppolynuclear aromatic (polycyclic aromatics), making macromolecule with this can be including but not limited to the fen (polythiophenes) of poly-plug, poly-selenophen (poly (selenophenes), poly-tellurium fen (poly (tellurophenes)), polypyrrole (polypyrroles), polyaniline (polyanilines), Ppolynuclear aromatic polymer (polycyclic aromatic polymers) etc.U.S. Pat .Patent Application 20080017852 to Huh; Dal Ho et al., denomination of invention can be done reference for " Conductive Polymer Composition Comprising Organic Ionic Salt and Optoelectronic Device Using the Same " discloses the method for making conducting polymer.Among another embodiment, conducting polymer is organic polymer semiconductor (organic polymer semiconductor) or organic semiconductor (organic semiconductor) again.Conduction polyacetylene (polyacetylenes) kenel comprises polyacetylene (polyacetylene), polypyrrole (polypyrrole), polyaniline (polyaniline) and derivative (derivatives) thereof.Electrically conductive organic polymer has extension delocalized bond (extended delocalized bonds) usually, and this causes conduction band structure (band structure), is similar to silicon and still has localized state (localized states).This zero energy gap (zero-band gap) conducting polymer has the metalloid behavior.
Conductive rubber can comprise at least a glass, metal particle and additive.Wherein this glass is selected from one of following group or its combination: aluminium oxide (Al 2O 3), boron oxide (B 2O 3), silicon dioxide (SiO 2), iron oxide (Fe 2O 3), phosphorous oxide (P 2O 5), titanium dioxide (TiO 2), boron oxide/boric acid/sodium tetraborate (B 2O 3/ H 3BO 3/ Na 2B 4O 7), lead oxide (PbO), magnesium oxide (MgO), gallium oxide (Ga 2O 3), lithia (Li 2O), vanadic oxide (V 2O 5), zinc peroxide (ZnO 2), sodium oxide molybdena (Na 2O), zirconia (ZrO 2), thallium oxide/thallic oxide/thallium hydroxide (TlO/Tl 2O 3/ TlOH), nickel oxide/nickel (NiO/Ni), manganese dioxide (MnO 2), cupric oxide (CuO), silver oxide (AgO), scandium oxide (Sc 2O 3), strontium oxide strontia (SrO), barium monoxide (BaO), calcium oxide (CaO), thallium (Tl), zinc oxide (ZnO).Additive can comprise oleic acid (oleic acid).Antenna must comprise difformity.Inverse-F antenna can be consulted the U.S. Patent Publication of filing an application on July 3rd, 2007 No. 20080001826.The respective embodiments described above also can be made the solar energy conductive electrode.Antenna structure is configurable in hand-held device, mobile phone, mobile computer, personal digital assistant, portable apparatus, vehicle-carried, near-field communication (Near Field Communication; NFC) use.
To being familiar with this field skill person, though this creation is illustrated as above with preferred embodiments, so it is not in order to limit this creation spirit.Modification of being done in spirit that does not break away from this creation and scope and similarly configuration all should be included in the following claim, and this scope should cover all similar modification and similar structures, and should do the broadest annotation.

Claims (34)

1. film antenna manufacture method is characterized in that: comprise:
Purchase the conductivity gel;
This conductivity gel coating is formed conductive film on a substrate surface;
This conductivity type film heat treatment is formed film antenna.
2. the manufacture method of film antenna according to claim 1 is characterized in that: wherein this conductivity gel configuration step comprises and purchases alkene type oxide metallizing thing.
3. the manufacture method of film antenna according to claim 2, it is characterized in that: wherein this alkene type oxide comprises polyethylene oxide (PEO).
4. the manufacture method of film antenna according to claim 3, it is characterized in that: wherein this polyethylene oxide (PEO) comprises In (NO) at least 33H 2O, In (Ac) 3, SnCl 22H 2O, or Sn (C 2O 4).
5. the manufacture method of film antenna according to claim 2, it is characterized in that: wherein this metallic compound comprises indium, tin compound.
6. the manufacture method of film antenna according to claim 1, it is characterized in that: wherein this substrate comprises PCB, pottery, macromolecule, glass or fiber.
7. the manufacture method of film antenna according to claim 1, it is characterized in that: wherein this base material comprises PET.
8. film antenna manufacture method is characterized in that: comprise:
Form inorganic polymer;
Utilize this inorganic matter to purchase gel;
This gel coating is formed film on substrate surface;
This film heat treatment is formed film antenna.
9. the manufacture method of film antenna according to claim 8, it is characterized in that: wherein this substrate comprises PCB, pottery, macromolecule, glass or fiber.
10. the manufacture method of film antenna according to claim 8, it is characterized in that: wherein this base material comprises PET.
11. the manufacture method of film antenna according to claim 8 is characterized in that: wherein this gel comprises TiO 2
12. the manufacture method of film antenna according to claim 8 is characterized in that: wherein this gel comprises ZnO 2
13. the manufacture method of film antenna according to claim 8 is characterized in that: wherein this gel comprises SiO 2
14. the manufacture method of film antenna according to claim 8 is characterized in that: wherein precursors comprises basic anhydride, inorganic salts, organic salt.
15. the manufacture method of film antenna according to claim 15 is characterized in that: wherein these inorganic salts comprise chloride or nitrate.
16. the manufacture method of film antenna according to claim 15 is characterized in that: wherein this organic salt comprises acetate.
17. the manufacture method of film antenna according to claim 15 is characterized in that: wherein this precursors comprises Si (OC 2H 5) 4, Ti (OC 2H 5) 4Or Zr (OC 3H 7) 4
18. a contact panel membrane electrode manufacture method is characterized in that: comprise:
Purchase the conductivity gel;
This conductivity gel coating is formed conductive film on a transparent base surface;
This conductivity type film heat treatment is formed transparent electrode thin film.
19. contact panel membrane electrode manufacture method according to claim 18 is characterized in that: wherein this conductivity gel configuration step comprises and purchases alkene type oxide metallizing thing.
20. contact panel membrane electrode manufacture method according to claim 19 is characterized in that: wherein this alkene type oxide comprises polyethylene oxide (PEO).
21. contact panel membrane electrode manufacture method according to claim 20 is characterized in that: wherein this polyethylene oxide (PEO) comprises In (NO) at least 33H 2O, In (Ac) 3, SnCl 22H 2O, or Sn (C 2O 4).
22. contact panel membrane electrode manufacture method according to claim 18, it is characterized in that: wherein this metallic compound comprises indium, tin compound.
23. contact panel membrane electrode manufacture method according to claim 18, it is characterized in that: wherein this transparency carrier comprises glass.
24. contact panel membrane electrode manufacture method according to claim 18 is characterized in that:, wherein this transparent base comprises PET.
25. a contact panel membrane electrode manufacture method is characterized in that: comprise:
Form inorganic polymer;
Utilize this inorganic matter to purchase gel;
This gel coating is formed film on substrate surface;
This film heat treatment is formed transparent electrode thin film.
26. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein this transparency carrier comprises glass.
27. contact panel membrane electrode according to claim 25 is characterized in that: wherein this transparent base comprises PET.
28. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein this gel comprises TiO 2
29. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein this gel comprises ZnO 2
30. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein this gel comprises SiO 2
31. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein precursors comprises basic anhydride, inorganic salts, organic salt.
32. contact panel membrane electrode manufacture method according to claim 31, it is characterized in that: wherein these inorganic salts comprise chloride or nitrate.
33. contact panel membrane electrode manufacture method according to claim 31, it is characterized in that: wherein this organic salt comprises acetate.
34. contact panel membrane electrode manufacture method according to claim 25, it is characterized in that: wherein this precursors comprises Si (OC 2H 5) 4, Ti (OC 2H 5) 4Or Zr (OC 3H 7) 4
CN2009101811239A 2009-10-10 2009-10-10 Manufacturing method of film antenna Pending CN102044737A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1599024A (en) * 2004-07-30 2005-03-23 西安理工大学 Tin-doped indium oxide film and making process of fine pattern
CN1792806A (en) * 2005-11-21 2006-06-28 西安理工大学 Collosol of yttrium barium cupper oxygen superconducting film and process for preparing high temp. superconducting film thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1599024A (en) * 2004-07-30 2005-03-23 西安理工大学 Tin-doped indium oxide film and making process of fine pattern
CN1792806A (en) * 2005-11-21 2006-06-28 西安理工大学 Collosol of yttrium barium cupper oxygen superconducting film and process for preparing high temp. superconducting film thereof

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ATSUNORI等: "Transparent Anatase Nanocomposite Films by the Sol-Gel Process at Low Temperatures", 《COMMUNICATIONS OF THE AMERICAN CERAMIC SOCIETY》 *
周杰等: "PEO掺杂氧化镍薄膜的溶胶-凝胶法制备及电致变色性能研究", 《化学学报》 *
李海元等: "碱催化制备溶胶-凝胶ZrO2薄膜及性能研究", 《武汉理工大学学报》 *
杨南如等: "溶胶-凝胶法简介", 《硅酸盐通报》 *

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Application publication date: 20110504