US20130316089A1 - Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof - Google Patents
Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof Download PDFInfo
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- US20130316089A1 US20130316089A1 US13/956,363 US201313956363A US2013316089A1 US 20130316089 A1 US20130316089 A1 US 20130316089A1 US 201313956363 A US201313956363 A US 201313956363A US 2013316089 A1 US2013316089 A1 US 2013316089A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/30—Zinc; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/34—Copper; Compounds thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/24—Heavy metals; Compounds thereof
- A61K33/38—Silver; Compounds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/001—Enzyme electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/543—Immunoassay; Biospecific binding assay; Materials therefor with an insoluble carrier for immobilising immunochemicals
- G01N33/54366—Apparatus specially adapted for solid-phase testing
- G01N33/54373—Apparatus specially adapted for solid-phase testing involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings
- G01N33/5438—Electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Definitions
- the present invention relates to touch screens and more particularly to such a touch screen having a bacteria inhibition layer for prohibiting bacteria from growing thereon and a method for manufacturing the same.
- a touch screen as a component of an electronic and computer product is adapted to show output characters or graphics thereon.
- the touch screen is adapted to send characters or instructions inputted by a user to the electronic and computer product.
- a touch screen serves as both input and output devices of an electronic and computer product.
- the electronic and computer product After viewing description or icons shown on a touch screen of an electronic and computer product, a user can point to things on it by touching a button or icon on the screen itself so as to operate the electronic and computer product. Thus, a user can not only use the electronic and computer product conveniently but also operate the same in a user friendly manner.
- the electronic and computer product provides a flexible, interactive operating platform in developing software with user friendly feature. For a consumer, no additional input device is required to install in the electronic and computer product. Thus, expense for buying an input device is saved and there is no need of preserving space on the electronic and computer product.
- touch screen is an input device with simple operation and user friendly features.
- most problems encountered by people in public places can be solved successfully if software installed in a touch screen is well designed.
- bacteria may grow on the touch screen of an electronic and computer product since it is installed in a public place for user operation by touching the screen. This is a great threat to hygiene and public health.
- how to maintain a clean touch screen of one of many types of electronic and computer products installed in public places is a critical, important issue for authority of each public place.
- the bacteria inhibition layer is formed of organic material as implemented by designers and manufacturers of electronic and computer products.
- Organic material coated on a touch screen can inhibit growth of bacteria.
- organic material has a low melting point or boiling point and is easy to evaporate or decompose. Thus, its bacteria inhibition capability only lasts for a short period of time.
- organic material is toxic. Hence, it is not appropriate to coat organic material on a product designed to be touched by users.
- Titanium dioxide is subjected to LTV (ultraviolet)-light for being catalyzed and thus for destroying bacteria.
- LTV ultraviolet
- UV-light is very weak in a room environment.
- the desired bacteria inhibition effect is substantially compromised.
- It is an object of the present invention to provide a method for manufacturing a touch screen comprising uniformly dispersing particles of nano metal material in a solution to be applied to a surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on a screen of the touch screen; and subjecting the solution coated on the screen of the touch screen to a heat treatment until solvent in the solution is completely evaporated so that the particles of the nano metal material are densely adhered to the screen of the touch screen to form a bacteria inhibition layer thereon.
- a prior surface treatment e.g., hardening treatment, endurability treatment, anti-glare treatment, or anti-reflection treatment
- a process of the present invention comprises uniformly dispersing particles of nano
- a substrate for the touch screen being organic material (e.g., PET film)
- a relative high temperature for example, between about 160°0 C. and 200° C.
- FIG. 1 is a flowchart depicting a process for manufacturing touch screen with bacteria inhibition layer according to the invention.
- the process comprises uniformly dispersing particles of nano metal material having a diameter in the range of about 1 nm to 100 nm in a solution to be applied to surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on a screen of a touch screen; and subjecting the solution coated on the touch screen to a heat treatment until solvent in the solution is completely evaporated.
- particles of nano metal material are densely adhered to the screen of touch screen to form a bacteria inhibition layer thereon.
- a touch screen with a bacteria inhibition layer is produced.
- Nano metal material as defined by the invention means that one has biochemical activation, is able to penetrate cell membrane of a bacteria for damaging enzyme and killing the same naturally, and has particles having a diameter in the range of about 1 nm to 100 nm.
- Nano metal material may be selected from nano gold (Au), nano silver (Ag), nano copper (Cu), nano zinc (Zn), nano platinum (Pt), or a combination or compound thereof such as nano silver oxide, nano copper oxide, nano zinc oxide, nano silver nitrite, nano copper nitrite, or nano zinc nitrite.
- the touch screen can be an infrared (IR) one, resistive one, capacitive one, or ultrasonic one depending on manufacturing process and construction.
- Screen of the touch screen to be touched by users is subjected to an appropriate surface treatment depending on applications.
- surface treatment can be a hardening treatment, endurability treatment, anti-glare treatment, or anti-reflection treatment.
- the process comprises uniformly dispersing particles of nano metal material in a solution to be applied to surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm.
- the process comprises evenly spray coating the solution on a screen of a touch screen by employing a conventional coating method such as spin coating, dipping coating, spray coating, or rolling coating.
- the process comprises subjecting the solution coated on the touch screen to a heat treatment until solvent in the solution is completely evaporated.
- particles of nano metal material contained in the solution are densely adhered to the screen of touch screen to form a bacteria inhibition layer thereon.
- a touch screen with a bacteria inhibition layer is produced.
- a milling method or ultrasonic method can be employed to uniformly disperse particles of nano metal material in the solution.
- substrate for manufacturing the touch screen can be classified as organic compound and inorganic compound based on properties of material.
- it typically is PET (polyethylene terephthalate) film.
- it typically is glass.
- Solution for surface treatment and subsequent processes are also different between the above two different substrates as contemplated by the invention.
- solution for surface treatment comprises UV-light (or thermosetting) resin and appropriate solvent. After evenly spray coating the solution on a surface of PET film, it is subjected to UV lamp radiation or heat treatment depending on types of resin being used in which the heat treatment is done in a relative low temperature, for example, between about 50° C. and 100° C.
- solution for surface treatment comprises silicate (ester), water, acid, and appropriate solvent.
- heat treatment After evenly spray coating the solution on a surface of glass, it is subjected to heat treatment only in which the heat treatment is done in a relative high temperature, for example, between about 160° C. and 200° C.
- a touch screen having glass as substrate is subjected to an anti-glare treatment including subjecting particles of nano silver having a diameter in the range of about 1 nm to 100 nm to an ultrasonic oscillation in a frequency ranged from 10 KHz to 50 KHz for uniformly dispersing the particles of primary state in an alcoholic solution for preparing a required dispersing solution; pouring an anti-glare treatment solution consisting of silicate (ester) compound and alcohol (or other appropriate solvent) into the dispersing solution; agitating the solution for at least 10 minutes until it is uniformly mixed with a pH value indicating acidity and the particles of nano silver having a concentration of about 20 ppm to 500 ppm, evenly spray coating the solution on a screen of a touch screen; and subjecting screen of the touch screen to a heat treatment in a temperature ranged from about 160° C.
- an anti-glare treatment including subjecting particles of nano silver having a diameter in the range of about 1 nm to 100 nm to an ultrasonic oscillation in
- the anti-glare layer comprises silicone dioxide and nano silver and preferably has a thickness between about 50 and 5000 angstrom.
- the touch screen being IR touch screen
- E. coli Escherichia coli having a density of 1 million per square centimeter is disseminated on the screen of each of the above touch screens.
- the number of E. coli living on the screen of each of the above touch screens is counted after 24 hours.
- a result shows that the number of E. coli still living on the IR touch screen of the invention is about 99% less than the that at beginning of the experiment (i.e., 99% reduction.
- the number of E. coli still living on the prior IR touch screen without being subjected to a bacteria inhibition process is about the same as that at beginning of the experiment.
- the touch screen of the invention can effectively inhibit the growth of bacteria thereon.
- the touch screen being a resistive one having its substrate formed of PET film
- a hardening treatment it is possible of uniformly dispersing particles of nano silver weighted 0.1 g and having a diameter of about 10 nm in methyl ethyl ketone weighted 100 g for preparing a required dispersing solution; adding an LTV hardener mainly consisting of polybutene acrylate monomers weighted 900 g in the dispersing solution; uniformly mixing them; evenly spray coating the solution on screen of the resistive touch screen; subjecting the screen of the resistive touch screen to an IR heating for about 5 minutes until solvent in the solution is completely evaporated; and subjecting the resistive touch screen to be radiated by a UV lamp having a power of 40 W to 60 W until a hardened layer with bacteria inhibition capability haying a thickness of about several micrometers is formed on the resistive touch screen (i.e., hardening treatment finished).
- E. coli having a density of 1 million per square centimeter is disseminated on the screen of each of the above touch screens.
- the number of E. coli living on the screen of each of the above touch screens is counted after 24 hours.
- a result shows that the number of E. coli still living on the resistive touch screen of the invention is about 99% less than that at beginning of the experiment (i.e., 99% reduction).
- the number of E. coli still living on the prior resistive touch screen without being subjected to a bacteria inhibition process is about the same as that at beginning of the experiment.
- the touch screen of the invention can effectively inhibit the growth of bacteria thereon.
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Abstract
The present invention is to provide a touch screen having a bacteria inhibition layer for prohibiting bacteria from growing thereon and a method for manufacturing the same comprising uniformly dispersing particles of nano metal material in a solution to be applied to a surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on a screen of the touch screen; and subjecting the solution coated on the screen of the touch screen to a heat treatment until solvent in the solution is completely evaporated so that the particles of the nano metal material are densely adhered to the screen of the touch screen to form a bacteria inhibition layer thereon.
Description
- This application is a continuation of Prior application Ser. No. 12/830,453, filed Jul. 6, 2010.
- The present invention relates to touch screens and more particularly to such a touch screen having a bacteria inhibition layer for prohibiting bacteria from growing thereon and a method for manufacturing the same.
- Electronics and computer technologies have made a significant progress in recent years due to booming of the Internet. Many compact, portable products are developed by electronic and computer product designers and manufacturers for fulfilling the urgent needs of vast consumers. Moreover, a number of significant, revolutionary modifications have been made with respect to input component or output component of any one of the products due to the consideration of user friendliness. The most important one of the modifications is the development of touch screen. In one aspect, a touch screen as a component of an electronic and computer product is adapted to show output characters or graphics thereon. In another aspect, the touch screen is adapted to send characters or instructions inputted by a user to the electronic and computer product. In other words, a touch screen serves as both input and output devices of an electronic and computer product. After viewing description or icons shown on a touch screen of an electronic and computer product, a user can point to things on it by touching a button or icon on the screen itself so as to operate the electronic and computer product. Thus, a user can not only use the electronic and computer product conveniently but also operate the same in a user friendly manner. For a software developer, the electronic and computer product provides a flexible, interactive operating platform in developing software with user friendly feature. For a consumer, no additional input device is required to install in the electronic and computer product. Thus, expense for buying an input device is saved and there is no need of preserving space on the electronic and computer product.
- Recently, many types of electronic and computer products with touch screen are widely installed in public places such as schools, department stores, hospitals, airports, and railroad stations. Any person thus can touch the screen of a touch screen for information inquiry and guide. For users, touch screen is an input device with simple operation and user friendly features. Moreover, most problems encountered by people in public places can be solved successfully if software installed in a touch screen is well designed. However, bacteria may grow on the touch screen of an electronic and computer product since it is installed in a public place for user operation by touching the screen. This is a great threat to hygiene and public health. Thus, how to maintain a clean touch screen of one of many types of electronic and computer products installed in public places is a critical, important issue for authority of each public place.
- In view of the fact that touch screens have become medium of disseminating bacteria thus for solving this problem many designers and manufacturers of electronic and computer products have developed a touch screen with bacteria inhibition feature in which a bacteria inhibition layer is coated on the touch screen. Typically, the bacteria inhibition layer is formed of organic material as implemented by designers and manufacturers of electronic and computer products. Organic material coated on a touch screen can inhibit growth of bacteria. However, organic material has a low melting point or boiling point and is easy to evaporate or decompose. Thus, its bacteria inhibition capability only lasts for a short period of time. Moreover, generally speaking, organic material is toxic. Hence, it is not appropriate to coat organic material on a product designed to be touched by users. Recently, still some manufacturers of the art employ popular titanium dioxide as optical catalyst for inhibiting growth of bacteria or even destroying the same. Titanium dioxide is subjected to LTV (ultraviolet)-light for being catalyzed and thus for destroying bacteria. However, UV-light is very weak in a room environment. Thus, the desired bacteria inhibition effect is substantially compromised.
- Thus, it is desirable to choose a suitable bacteria inhibition material and provide a novel process of manufacturing touch screens with a bacteria inhibition layer in order to contribute significantly to the advancement of the art.
- After considerable research and experimentation, a touch screen with bacteria inhibition layer and manufacturing method thereof according to the present invention have been devised so as to overcome the above drawback of the prior art.
- It is an object of the present invention to provide a method for manufacturing a touch screen comprising uniformly dispersing particles of nano metal material in a solution to be applied to a surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on a screen of the touch screen; and subjecting the solution coated on the screen of the touch screen to a heat treatment until solvent in the solution is completely evaporated so that the particles of the nano metal material are densely adhered to the screen of the touch screen to form a bacteria inhibition layer thereon.
- It is another object of the present invention to subject a screen of a typical touch screen (e.g., IR touch screen, resistive touch screen, capacitive touch screen, or ultrasonic touch screen) to be touched by users to a prior surface treatment (e.g., hardening treatment, endurability treatment, anti-glare treatment, or anti-reflection treatment) and a process of the present invention comprises uniformly dispersing particles of nano metal material in a solution to be applied to the surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on the screen of the touch screen; and subjecting the solution coated on the screen of the touch screen to a heat treatment until the particles of the nano metal material contained are densely adhered to the screen of the touch screen to form a bacteria inhibition layer thereon.
- It is still another object of the present invention to, in preparing the solution, employ a milling method or an ultrasonic method to uniformly disperse the particles of the nano metal material in the solution to be applied to the surface treatment.
- It is yet another object of the present invention to employ a spin coating, a dipping coating, a spray coating, or a rolling coating to evenly spray coating the solution on the screen of the touch screen.
- It is a further object of the present invention to, in a case of a substrate for the touch screen being organic material (e.g., PET film), provide the solution for the surface treatment including UV-light resin or thermosetting resin and appropriate solvent such that after evenly spray coating the solution on a surface of the PET film, it is subjected to UV lamp radiation or heat treatment depending on types of resin being used wherein the heat treatment is done in a relative low temperature, for example, between about 50° C. and 100° C.
- It is a yet further object of the present invention to, in a case of a substrate for the touch screen being inorganic material (e.g., glass), provide the solution for the surface treatment including silicate (ester), water, acid, and appropriate solvent such that after evenly spray coating the solution on a surface of the glass, it is subjected to heat treatment wherein the heat treatment is done in a relative high temperature, for example, between about 160°0 C. and 200° C.
- The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.
-
FIG. 1 is a flowchart depicting a process for manufacturing touch screen with bacteria inhibition layer according to the invention. - Referring to
FIG. 1 , a process for manufacturing touch screen with a bacteria inhibition layer in accordance with the invention is illustrated. The process comprises uniformly dispersing particles of nano metal material having a diameter in the range of about 1 nm to 100 nm in a solution to be applied to surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm; evenly spray coating the solution on a screen of a touch screen; and subjecting the solution coated on the touch screen to a heat treatment until solvent in the solution is completely evaporated. As such, particles of nano metal material are densely adhered to the screen of touch screen to form a bacteria inhibition layer thereon. As a result, a touch screen with a bacteria inhibition layer is produced. Nano metal material as defined by the invention means that one has biochemical activation, is able to penetrate cell membrane of a bacteria for damaging enzyme and killing the same naturally, and has particles having a diameter in the range of about 1 nm to 100 nm. Nano metal material may be selected from nano gold (Au), nano silver (Ag), nano copper (Cu), nano zinc (Zn), nano platinum (Pt), or a combination or compound thereof such as nano silver oxide, nano copper oxide, nano zinc oxide, nano silver nitrite, nano copper nitrite, or nano zinc nitrite. - In the invention, the touch screen can be an infrared (IR) one, resistive one, capacitive one, or ultrasonic one depending on manufacturing process and construction. Screen of the touch screen to be touched by users is subjected to an appropriate surface treatment depending on applications. For example, surface treatment can be a hardening treatment, endurability treatment, anti-glare treatment, or anti-reflection treatment. In the invention the process comprises uniformly dispersing particles of nano metal material in a solution to be applied to surface treatment so that the solution can have a concentration of 20 ppm to 500 ppm. Next, the process comprises evenly spray coating the solution on a screen of a touch screen by employing a conventional coating method such as spin coating, dipping coating, spray coating, or rolling coating. Next, the process comprises subjecting the solution coated on the touch screen to a heat treatment until solvent in the solution is completely evaporated. As such, particles of nano metal material contained in the solution are densely adhered to the screen of touch screen to form a bacteria inhibition layer thereon. As a result, a touch screen with a bacteria inhibition layer is produced. In the step of preparing the solution, a milling method or ultrasonic method can be employed to uniformly disperse particles of nano metal material in the solution.
- Conventionally, substrate for manufacturing the touch screen can be classified as organic compound and inorganic compound based on properties of material. For the former, it typically is PET (polyethylene terephthalate) film. For the latter, it typically is glass. Solution for surface treatment and subsequent processes are also different between the above two different substrates as contemplated by the invention. In a case of substrate for touch screen being PET film, solution for surface treatment comprises UV-light (or thermosetting) resin and appropriate solvent. After evenly spray coating the solution on a surface of PET film, it is subjected to UV lamp radiation or heat treatment depending on types of resin being used in which the heat treatment is done in a relative low temperature, for example, between about 50° C. and 100° C. In a case of substrate for touch screen being glass, solution for surface treatment comprises silicate (ester), water, acid, and appropriate solvent. After evenly spray coating the solution on a surface of glass, it is subjected to heat treatment only in which the heat treatment is done in a relative high temperature, for example, between about 160° C. and 200° C.
- A couple of embodiments will be described in detail below for fully describing design spirit and operating principle of the invention as contemplated by the present inventor. Also, an experiment is conducted with respect to the produced touch screen so as to fully demonstrate bacteria inhibition or destroying effect of the invention.
- In a preferred embodiment of the invention, a touch screen having glass as substrate is subjected to an anti-glare treatment including subjecting particles of nano silver having a diameter in the range of about 1 nm to 100 nm to an ultrasonic oscillation in a frequency ranged from 10 KHz to 50 KHz for uniformly dispersing the particles of primary state in an alcoholic solution for preparing a required dispersing solution; pouring an anti-glare treatment solution consisting of silicate (ester) compound and alcohol (or other appropriate solvent) into the dispersing solution; agitating the solution for at least 10 minutes until it is uniformly mixed with a pH value indicating acidity and the particles of nano silver having a concentration of about 20 ppm to 500 ppm, evenly spray coating the solution on a screen of a touch screen; and subjecting screen of the touch screen to a heat treatment in a temperature ranged from about 160° C. to 200° C. for about 30 minutes to 60 minutes until solvent in the solution is completely evaporated with the sol-gel reaction being completed. As such, an anti-glare layer with bacteria inhibition effect is formed on the touch screen. The anti-glare layer comprises silicone dioxide and nano silver and preferably has a thickness between about 50 and 5000 angstrom.
- In the above embodiment in a case of the touch screen being IR touch screen, it is possible of uniformly dispersing particles of nano silver weighted 0.1 g and having a diameter of about 10 nm in ethyl alcohol weighted 100 g for preparing a required dispersing solution; adding ethyl silicate weighted 900 g in the dispersing solution; pouring the dispersing solution into an anti-glare treatment solution to uniformly mix them until the solution with a pH value 4 is prepared; evenly spray coating the solution on a glass screen of an IR touch screen; and subjecting the IR touch screen to a heat treatment in a predetermined temperature such as about 180° C. preferably for about 1 hour until an anti-glare layer with bacteria inhibition effect having a thickness of about 1000 angstrom is formed on the IR touch screen. In an experiment conducted by the present inventor for comparing the produced IR touch screen of the invention with a prior IR touch screen without being subjected to a bacteria inhibition process. Escherichia coli (E. coli) having a density of 1 million per square centimeter is disseminated on the screen of each of the above touch screens. The number of E. coli living on the screen of each of the above touch screens is counted after 24 hours. A result shows that the number of E. coli still living on the IR touch screen of the invention is about 99% less than the that at beginning of the experiment (i.e., 99% reduction. As comparison, the number of E. coli still living on the prior IR touch screen without being subjected to a bacteria inhibition process is about the same as that at beginning of the experiment. In conclusion, the touch screen of the invention can effectively inhibit the growth of bacteria thereon.
- In another preferred embodiment of the invention in a case of the touch screen being a resistive one having its substrate formed of PET film, in a hardening treatment it is possible of uniformly dispersing particles of nano silver weighted 0.1 g and having a diameter of about 10 nm in methyl ethyl ketone weighted 100 g for preparing a required dispersing solution; adding an LTV hardener mainly consisting of polybutene acrylate monomers weighted 900 g in the dispersing solution; uniformly mixing them; evenly spray coating the solution on screen of the resistive touch screen; subjecting the screen of the resistive touch screen to an IR heating for about 5 minutes until solvent in the solution is completely evaporated; and subjecting the resistive touch screen to be radiated by a UV lamp having a power of 40 W to 60 W until a hardened layer with bacteria inhibition capability haying a thickness of about several micrometers is formed on the resistive touch screen (i.e., hardening treatment finished). In an experiment conducted by the present inventor for comparing the produced resistive touch screen of the invention with a prior resistive touch screen without being subjected to a bacteria inhibition process, E. coli having a density of 1 million per square centimeter is disseminated on the screen of each of the above touch screens. The number of E. coli living on the screen of each of the above touch screens is counted after 24 hours. A result shows that the number of E. coli still living on the resistive touch screen of the invention is about 99% less than that at beginning of the experiment (i.e., 99% reduction). As comparison, the number of E. coli still living on the prior resistive touch screen without being subjected to a bacteria inhibition process is about the same as that at beginning of the experiment. In conclusion, the touch screen of the invention can effectively inhibit the growth of bacteria thereon.
- While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.
Claims (14)
1-5. (canceled)
6. A method for manufacturing a resistive touch screen, the method comprising:
providing an organic substrate;
forming a dispersing solution by uniformly dispersing particles of nano-sized metal material in a solvent;
forming a surface treatment solution;
mixing the surface treatment solution with the dispersing solution to form a mixed solution;
coating a surface of the organic substrate of the resistive touch screen with the mixed solution; and
heating the organic substrate of the resistive touch screen until the solvent in the mixed solution is completely evaporated, and then subjecting the organic substrate of the resistive touch screen to an UV radiation, so that the particles of the nano-sized metal material form a bacteria inhibition layer thereon.
7. The method of claim 6 , wherein the organic substrate is formed of PET (polyethylene terephthalate).
8. The method of claim 6 , wherein in the step of forming a dispersing solution, the particles of nano-sized metal material are weighted 0.1 g dispersed in the solvent.
9. The method of claim 8 , wherein in the step of forming a dispersing solution, the solvent comprises methylethylketone that is weighted 100 g.
10. The method of claim 8 , wherein in the step of forming a dispersing solution, the particles of nano-sized metal material comprise particles of nano-sized silver (Ag).
11. The method of claim 6 , wherein in the step of forming a surface treatment solution, the surface treatment solution comprises a UV hardener.
12. The method of claim 11 , wherein the UV hardener comprises polybutene acrylate monomers that are weighted 900 g.
13. The method of claim 6 , wherein in the step of subjecting the organic substrate of the resistive touch screen to an UV radiation, the UV radiation has a power ranged from 40 W to 60 W.
14. The method of claim 6 , wherein in the step of forming a dispersing solution, the particles of the nano-sized metal material are uniformly dispersed in the solvent by a milling method or an ultrasonic vibration method.
15. The method of claim 6 , wherein in the step of coating a surface of the organic substrate of the resistive touch screen with the mixed solution, the surface of the organic substrate of the resistive touch screen is coated with the mixed solution by a spray coating method.
16. The method of claim 6 , wherein the nano-sized metal material has a diameter in the range of about 10 nm.
17. The method of claim 6 , wherein in the step of heating the organic substrate of the resistive touch screen, the organic substrate of the resistive touch screen is heated by an infrared heating.
18. The method of claim 17 , wherein the organic substrate is heated for 5 minutes by the infrared heating.
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US13/956,363 US20130316089A1 (en) | 2005-07-29 | 2013-08-01 | Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof |
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US11/192,066 US20070026089A1 (en) | 2005-07-29 | 2005-07-29 | Touch screen with bacteria inhibition layer and manufacturing method thereof |
US12/830,453 US8524314B2 (en) | 2005-07-29 | 2010-07-06 | Touch screen with bacteria inhibition layer and manufacturing method thereof |
US13/956,363 US20130316089A1 (en) | 2005-07-29 | 2013-08-01 | Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof |
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US12/830,453 Active 2026-04-18 US8524314B2 (en) | 2005-07-29 | 2010-07-06 | Touch screen with bacteria inhibition layer and manufacturing method thereof |
US13/956,309 Abandoned US20130316168A1 (en) | 2005-07-29 | 2013-07-31 | Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof |
US13/956,363 Abandoned US20130316089A1 (en) | 2005-07-29 | 2013-08-01 | Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof |
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US12/830,453 Active 2026-04-18 US8524314B2 (en) | 2005-07-29 | 2010-07-06 | Touch screen with bacteria inhibition layer and manufacturing method thereof |
US13/956,309 Abandoned US20130316168A1 (en) | 2005-07-29 | 2013-07-31 | Touch Screen with Bacteria Inhibition Layer and Manufacturing Method Thereof |
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Cited By (1)
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WO2015120003A1 (en) * | 2014-02-07 | 2015-08-13 | Enovate Medical Llc | Work platform for a wheeled medical cart |
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US20070026089A1 (en) * | 2005-07-29 | 2007-02-01 | Trendon Touch Technology Corp. | Touch screen with bacteria inhibition layer and manufacturing method thereof |
US20070264072A1 (en) * | 2006-05-11 | 2007-11-15 | Key Mouse Electronic Enterprise Co., Ltd. | Keyboard with anti-bacteria surface |
WO2010011779A2 (en) | 2008-07-23 | 2010-01-28 | Flextronics Ap, Llc | Integration design for capacitive touch panels and liquid crystal displays |
US9128568B2 (en) | 2008-07-30 | 2015-09-08 | New Vision Display (Shenzhen) Co., Limited | Capacitive touch panel with FPC connector electrically coupled to conductive traces of face-to-face ITO pattern structure in single plane |
US8209861B2 (en) | 2008-12-05 | 2012-07-03 | Flextronics Ap, Llc | Method for manufacturing a touch screen sensor assembly |
US8274486B2 (en) | 2008-12-22 | 2012-09-25 | Flextronics Ap, Llc | Diamond pattern on a single layer |
US9285929B2 (en) | 2010-03-30 | 2016-03-15 | New Vision Display (Shenzhen) Co., Limited | Touchscreen system with simplified mechanical touchscreen design using capacitance and acoustic sensing technologies, and method therefor |
US8597569B2 (en) | 2010-04-19 | 2013-12-03 | Microsoft Corporation, LLC | Self-sterilizing user input device |
KR20140023328A (en) | 2011-03-28 | 2014-02-26 | 코닝 인코포레이티드 | Antimicrobial action of cu, cuo and cu2o nanoparticles on glass surfaces and durable coatings |
US8525955B2 (en) | 2012-01-31 | 2013-09-03 | Multek Display (Hong Kong) Limited | Heater for liquid crystal display |
CN106095176B (en) * | 2016-06-08 | 2020-04-10 | 广东南海启明光大科技有限公司 | Copper-plated nano silver wire touch screen and manufacturing method thereof |
CN110442273A (en) | 2019-07-19 | 2019-11-12 | 深圳市华星光电半导体显示技术有限公司 | Infrared touch display device |
CN110760085A (en) * | 2019-10-15 | 2020-02-07 | 湖州健塑塑业科技有限公司 | Self-purification pipeline and preparation method and application thereof |
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JP3812757B2 (en) | 1996-03-28 | 2006-08-23 | 大日本印刷株式会社 | Antibacterial transparent film |
JPH11110133A (en) * | 1997-10-01 | 1999-04-23 | Daicel Chem Ind Ltd | Touch sensor glass substrate, and touch panel |
JP2002019044A (en) | 2000-07-12 | 2002-01-22 | Kimoto & Co Ltd | Antibacterial film |
US6350792B1 (en) * | 2000-07-13 | 2002-02-26 | Suncolor Corporation | Radiation-curable compositions and cured articles |
US6783805B2 (en) * | 2001-10-12 | 2004-08-31 | Rensselaer Polytechnic Institute | Gelatin nanocomposites |
GB0127786D0 (en) * | 2001-11-20 | 2002-01-09 | Univ Nottingham | Impregnation of antimicrobial substances |
JP2004020950A (en) * | 2002-06-17 | 2004-01-22 | Fuji Xerox Co Ltd | Image recording body and image display body using the same |
JP4082965B2 (en) * | 2002-08-28 | 2008-04-30 | リンテック株式会社 | Anti-glare hard coat film |
US7252864B2 (en) * | 2002-11-12 | 2007-08-07 | Eastman Kodak Company | Optical film for display devices |
KR100656169B1 (en) * | 2002-12-23 | 2006-12-12 | 삼성전자주식회사 | Method for Producing A Stuff Having Bacillus Resistance on The Surface Thereof by Nano Size Metal |
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US20070026089A1 (en) * | 2005-07-29 | 2007-02-01 | Trendon Touch Technology Corp. | Touch screen with bacteria inhibition layer and manufacturing method thereof |
Cited By (1)
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WO2015120003A1 (en) * | 2014-02-07 | 2015-08-13 | Enovate Medical Llc | Work platform for a wheeled medical cart |
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US20070026089A1 (en) | 2007-02-01 |
US20100272919A1 (en) | 2010-10-28 |
US8524314B2 (en) | 2013-09-03 |
US20130316168A1 (en) | 2013-11-28 |
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