JP2007039392A - Contact-controlling screen having antibacterial layer, and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To produce a contact-controlling screen also having an antibacterial function to improve the antibacterial characteristics and application region of the contact-controlling screen. <P>SOLUTION: The contact-controlling screen having the antibacterial function is produced by homogeneously dispersing particles of a metallic material with nano meter sizes in a chemical for surface treatment, keeping the concentration within 20-500 ppm, coating the resultant dispersion on the surface of the contact-controlling screen, subjecting the chemical uniformly applied on the surface of the contact-controlling screen to heat treatment to form the antibacterial layer on the surface of the contact-controlling screen when the solvent in the chemicals is completely evaporated, and the particles of the metallic material with the nanometer sizes are intimately attached to the surface of the contact-controlling screen. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a contact control screen having an antibacterial layer and a method for manufacturing the same, and in particular, a nanometer-class metallic material is uniformly and tightly attached to the surface of the contact control screen, and a method and a method for manufacturing a contact control screen having an antibacterial function are provided. It is what I pointed to.

  Over the past few years, the vigorous development of the network has revolutionized the electronic information industry, and the design and manufacturers of electronic information products have already created many small, light, small, and portable products to satisfy the immediate needs of consumers. In order to meet the needs of other users' compatibility, the design for changing the usage customs of consumers to the input / output interface of various electronic information products or devices has been made. One important design is the “touch control screen”. The contact control screen of an electronic information product is used to display a screen of characters or figures output from the electronic information product, and is also used to transmit characters or commands input by the user to the electronic information product. At the same time, since it is also an output and input device for the electronic information product, the user sees the characters or figures appearing on the touch control screen on each electronic information product and appears directly on the touch control screen according to the instructions on the screen If a virtual button or icon (icon) is pressed, the electronic information product can be smoothly controlled. For the user, the electronic information product is very convenient in use and very compatible in operation. For software designers, the electronic information product provides an interactive work platform that is designed to be very flexible, thereby allowing more interactive programs to be designed. In addition, to the purchaser, the electronic information product does not require an input device that is not a fixed amount, so that it is possible to save the cost necessary for purchasing the input device and the installation space left in advance.

  For this reason, various electronic information products equipped with contact control screens have been widely used in many public places for the past several years. For example, information is provided to many unspecified users in schools, department stores, hospitals, airports, train stations, etc. Provide an input / output device that is easy to use, convenient and compatible for the user, and is more effective if the design of the software attached to it is appropriate. Therefore, many problems and troubles that many users encounter in public places can be solved quickly. However, because the electronic information product, which is called a ball or a contact control screen of this kind, is installed in public places and is used for many users' operation, the only possible defect is propagation of bacteria. It is extremely easy to become an intermediary and is a major threat to public health and people's health. Therefore, how to ensure the cleanliness and hygiene of the contact control screens of various electronic information products in public places is an important issue that should be paid special attention to the main authority in each public place and cannot be easily overlooked. ing.

  In view of the fact that contact control screens are already an intermediary for the transmission of bacteria in public places, many electronic information product designs and manufacturers are working hard to resolve this potential crisis and make contact with bacteria-controlling capabilities. Research and development of control screens, the method of applying a bacterial control ability composition on the touch control screen, in general, many of the current bacterial information product manufacturers use organic control products from organic matter When the organic substances are applied to the surface of the contact control screen, the growth of bacteria can be suppressed. However, since their melting point or boiling point is low, they evaporate or decompose very easily, and for this reason, It is not suitable for application or application to products that are in direct contact with humans because it has no bacteria-inhibiting effect and the material is generally toxic. Other vendors have been using antibacterial or antibacterial treatments using titanium oxide catalysts that have been quite popular in recent years, but they have no photo-acceleration and bactericidal action unless performed under a UV light source. Since the UV light at is very weak, the antibacterial effect that occurs in it is not very ideal.

Therefore, how to select an appropriate antibacterial material and design a new manufacturing process to produce a contact control screen that also has antibacterial functions, and improve the antibacterial properties and application area of the contact control screen. This is an important issue to be examined here.
In view of the problems that the above-mentioned known touch control screens have existed for a long time, the inventor has developed a touch control screen having an antibacterial layer of the present invention and a manufacturing method thereof based on many years of practical experience and research knowledge.

  In order to achieve the above object, a contact control screen having an antibacterial layer according to the present invention and a method for manufacturing the same, uniformly disperse particles of a nanometer-grade metal material in a chemical solution for surface treatment, and a concentration of 20 to 500 ppm. Hold, and then apply it further to the surface of the contact control screen, and heat-treat the chemical uniformly applied to the surface of the contact control screen, the solvent in the chemical is completely evaporated, and the nanometer If the particles of the class metal material adhere closely to the surface of the contact control screen, an antibacterial layer is formed on the surface of the contact control screen, and a contact control screen having an antibacterial function is manufactured.

  In addition, the contact control screen having an antibacterial layer according to the present invention and a method of manufacturing the same may be applied to a surface that comes into contact with a user of various contact control screens such as a traditional infrared type, a resistance type, a capacitance type, and a sonic type. When performing appropriate surface treatments such as wear resistance, anti-glare, anti-reflection, etc., nanometer-class metal particles are uniformly dispersed in the surface treatment chemical solution, and the concentration is kept between 20 and 500 ppm. Further, when it is applied to the surface of the contact control screen and subjected to a heat treatment, the nanometer-grade metal particles closely adhere to the surface of the contact control screen to form an antibacterial layer.

Furthermore, the contact control screen having an antibacterial layer according to the present invention and the method for manufacturing the same use a polishing or ultrasonic vibration method to uniformly disperse a nanometer class metal in a chemical solution for surface treatment.
Furthermore, the contact control screen with an antibacterial layer according to the present invention and the method for manufacturing the contact control screen use a coating method such as spin coating, dip coating, spray coating, roller coating, etc. is there.

  Furthermore, the contact control screen having an antibacterial layer according to the present invention and the method for manufacturing the contact control screen, when the surface base material of the contact control screen is an organic compound such as a PET film, the composition of the surface treatment liquid is ultraviolet type or heat solidified. After making the resin of the mold and an appropriate solvent and applying the treatment liquid uniformly on the surface of the PET film, it is irradiated or heat-treated with a UV lamp depending on the type of the resin used, and the temperature of the heat treatment is somewhat low, about 50 Between -100 ° C.

  Furthermore, in the contact control screen having an antibacterial layer according to the present invention and the manufacturing method thereof, when the surface substrate of the contact control screen is an inorganic compound such as a glass structure, the composition of the surface treatment liquid is changed to silicate ( Ester), water, acid, and a suitable solvent, and after the treatment liquid is uniformly applied to the surface of the glass, it is necessary to perform heat treatment, and the temperature of the heat treatment is slightly high, and is between about 160-200 ° C. .

In order that the purpose, inventive concept, and technical principle of the present invention will be recognized in more detail, embodiments will be taken here and described in detail below in conjunction with the drawings.
As shown in FIG. 1, the contact control screen having an antibacterial layer according to the present invention and the manufacturing method thereof uniformly disperse a nanometer-class metal material having a particle size of about 1 nm to 100 nm in a surface treatment chemical solution, and the concentration thereof. Is then applied to the surface of the contact control screen, and the chemical solution uniformly applied to the surface of the contact control screen is subjected to a heat treatment, and the solvent in the chemical solution is removed. If it completely evaporates and the nanometer-grade metallic material particles adhere tightly to the surface of the contact control screen, an antibacterial layer is formed on the surface of the contact control screen, making an antibacterial contact control screen. it can. The “nanometer-class metallic material” referred to in the present invention has long been proved to have biochemical activity, has an effect of passing through the bacterial cell wall, altering the enzyme protein in the cell and causing natural death, and has a particle size of This refers to nanometer-class metallic materials having a thickness of 1 to 100 nm, such as nanometer gold (Au), nanometer silver (Ag), nanometer copper (Cu), nanometer zinc (Zn), nanometer platinum (Pt), etc. Metallic materials or compositions thereof, or compounds thereof, such as nanometer silver oxide, nanometer copper oxide, nanometer zinc oxide, nanometer silver nitrate, nanometer copper nitrate, nanometer zinc nitrate and the like.

  In the present invention, the touch control screen may be any one of various touch control screens such as an infrared type, a resistance type, a capacitance type, and a sonic type depending on the manufacturing method and structure thereof. The surface to be contacted by the user is generally subjected to an appropriate surface treatment according to actual needs. For example, the surface treatment such as curing treatment, anti-wear treatment, anti-glare treatment, anti-reflection treatment, etc. In manufacturing the chemicals required for each surface treatment, the nanometer-grade metal particles are uniformly dispersed in the surface treatment chemicals, and the concentration is kept between 20 and 500 ppm. Apply it to the surface of the contact control screen using methods such as spin coating, dip coating, spray coating, roller coating, etc. When the chemical solution applied to the surface of the liquid is heat-treated and the solvent in the chemical solution is completely evaporated, the nanometer-class metal particles contained in the chemical solution adhere closely to the surface of the contact control screen and have an antibacterial function. Can produce some touch control screens. In the present invention, when preparing these chemical solutions, it is possible to uniformly disperse the nanometer class metal particles in the surface treatment chemical solution using a dispersion method such as polishing or ultrasonic vibration method.

Traditionally, the substrates used to make the contact control screens are divided into organic and inorganic compounds depending on their material properties, of which the former is always a PET film and the latter is a glass structure. is there. Therefore, in the present invention, for the above-mentioned different types of substrates, the necessary surface treatment liquid and the subsequent manufacturing process are completely different, and when the substrate of the contact control screen is a PET film, The composition of the chemical solution required for the treatment is generally an ultraviolet-type or heat-solidified resin and an appropriate solvent. After the surface treatment chemical solution is uniformly applied to the surface of the PET film, the UV is changed depending on the type of resin used. Irradiated or heat-treated with a lamp, the temperature of the heat treatment is somewhat low, between about 50-100 ° C. When the surface base material of the contact control screen is glass, the composition of the surface treatment liquid is silicate (ester), water, acid and an appropriate solvent, and after the chemical liquid is uniformly applied to the glass surface Only performs a heat treatment, and the temperature of the heat treatment is slightly high, and is between about 160-200 ° C.
In order to fully express the design philosophy and working principle of the present invention, the inventor takes a few examples and explains in detail as follows, and performs actual measurements on the manufactured contact control screen to specifically describe the present invention. Decided to represent the antibacterial or antibacterial effect to be realized

  In an optimum embodiment of the present invention, when anti-glare treatment is performed on a contact control screen using a glass material as a screen base, first, nanometer silver particles having a particle size of about 1 nm to 100 nm are 10 to 10 nm. The required dispersion was formed by uniformly dispersing in the alcohol solvent in the form of the next particles with an ultrasonic vibration method of 50 KHz, and then further comprising a silicate (ester) compound and alcohol or other solvent. Add anti-glare surface treatment liquid into the dispersion, stir it for about 10 minutes or longer by stirring method to mix the two uniformly, and adjust the pH of the liquid mixture to acidic And maintaining the nanometer silver particle concentration at about 20-500 ppm. Then, the mixed solution is uniformly applied to the surface of the contact control screen by a spray method, and thereafter, the surface of the contact control screen is further subjected to heat treatment, and the heat treatment temperature is about 160 to 200 ° C. Is about 30-60 minutes, the solvent in the composition applied to the contact control screen is completely evaporated, and when the gelation reaction is completed, an anti-glare layer having an antibacterial effect is formed on the contact control screen. The major composition of the anti-blaze layer that is formed is silicon dioxide and nanometer silver, and its ideal thickness is about 50-5000 Angstroms.

  In the embodiment described above, if the contact control screen is an infrared contact control screen, nanometer silver particles of 0.1 gram particle size of about 10 nm are selected and uniformly in 100 grams of alcohol. Dispersion gives the required dispersion, after which 900 grams of silicate ester anti-stigma surface treatment liquid is added to the dispersion, and the two are uniformly mixed, and the mixture Adjust the pH value to 4. The mixed solution is uniformly sprayed on the surface glass of the infrared contact control screen, and heat treatment is performed. The heat treatment temperature is about 180 ° C., the heat treatment time is about 1 hour, and the antibacterial effect is about 1000 angstroms thick. An anti-glare layer is formed. The inventor made an experimental comparison between the manufactured infrared contact control screen and a non-traditional infrared contact control screen, and inoculated E. coli on the surface of each screen (million per square centimeter), 24 hours later, the number of Escherichia coli surviving was counted. As a result, the number of Escherichia coli on the infrared contact control screen produced according to the present example was greatly reduced by 90% from the number originally inoculated. The number of E. coli on traditional infrared contact control screens that have not been performed has not decreased, and as can be seen, this example certainly has the effect of inhibiting the growth of fungi on the surface of the contact control screen. it can.

In another optimal embodiment of the present invention, when a curing process is performed on the surface of a resistive contact control screen using a PET film as the base material of the screen, the particle size of 0.1 gram is first about 10 nm. Nanometer silver particles are uniformly dispersed in 100 grams of methyl ethyl ketone to form the required dispersion, and then 900 grams of polyurethane acrylate monomer-based UV curing agent is added to the dispersion, And the two are mixed uniformly. Furthermore, after spraying the mixed solution uniformly on the surface of the resistance contact control screen, the surface is heated with far infrared rays (IR) for about 5 minutes, and after the solvent in the mixed solution is completely evaporated, a UV lamp ( When the curing process is completed by irradiation at 40 to 60 W), an antibacterial cured film having a thickness of about several microns is formed. The inventor made an experimental comparison between the manufactured resistive contact control screen and a general non-traditional resistance contact control screen, and inoculated E. coli on the surface of each screen (million / square centimeter). And after 24 hours, the number of E. coli surviving was counted, and the result was that the number of E. coli on the resistive contact control screen produced according to this example was significantly reduced by 90% from the number originally inoculated. The number of E. coli on the traditional resistance-type contact control screen that has not been treated has not been reduced, so that this example certainly has the effect of suppressing fungal growth on the surface of the touch-control screen. Proven experiment.
What has been described above is only the optimal embodiment of the present invention, and the scope of rights claimed by the present invention is not limited to this, and those who are familiar with this technology can easily conceive according to the technical contents disclosed by the present invention. All changes in effect should not depart from the protection scope of the present invention.

It is a schematic diagram of the manufacturing process which concerns on this invention.

Claims (12)

Producing a chemical solution in which particles of a nanometer-class metal material are uniformly dispersed in a chemical solution for surface treatment, and maintaining the concentration of the chemical solution between 20 and 500 ppm;
Apply the chemical solution uniformly to the surface of the contact control screen,
The chemical solution uniformly applied to the surface of the contact control screen is subjected to a heat treatment, the solvent in the chemical solution is completely evaporated, and the particles of the nanometer-class metal material are closely adhered to the surface of the contact control screen. A method for manufacturing a contact control screen having an antibacterial layer on which an antibacterial layer is formed on the surface of the contact control screen.   The nanometer-class metallic material has biochemical activity, can penetrate bacterial cell walls, has an effect of causing spontaneous death by altering intracellular enzyme protein, and has a particle size of 1 nm to 100 nm. 2. A method for producing a contact control screen having an antibacterial layer according to 1.   The antibacterial according to claim 2, wherein the nanometer-grade metal material is at least one of nanometer gold (Au), nanometer silver (Ag), nanometer copper (Cu), nanometer zinc (Zn), or nanometer platinum (Pt). A method of manufacturing a contact control screen with layers.   The nanometer-grade metallic material is a composition or compound containing at least one of nanometer gold (Au), nanometer silver (Ag), nanometer copper (Cu), nanometer zinc (Zn), or nanometer platinum (Pt). Item 3. A method for producing a contact control screen having an antibacterial layer according to Item 2.   The touch-control screen having an antibacterial layer according to claim 2, wherein the chemical liquid for the surface treatment is a chemical liquid necessary for performing a surface treatment such as curing treatment, anti-wear treatment, anti-glare treatment, or anti-reflection treatment. Law.   When the base material of the contact control screen is a PET film, the composition of the chemical solution is an ultraviolet type or heat-setting resin and a solvent, and the resin used after the chemical solution is uniformly applied to the surface of the PET film 6. The method of manufacturing a contact control screen having an antibacterial layer according to claim 5, wherein irradiation with a UV lamp or heat treatment is performed depending on the kind of the heat treatment, and the temperature of the heat treatment is between 50 and 100C.   When the surface substrate of the contact control screen is glass, the chemical solution is composed of silicate (ester), water, acid and solvent, and heat treatment is performed after the chemical solution is uniformly applied to the glass surface. The method for producing a contact control screen having an antibacterial layer according to claim 5, wherein the temperature of the heat treatment is between 160 and 200 ° C. With touch control screen,
The surface of the contact control screen is applied to the surface that is always in contact with the user, and includes a nanometer-grade metallic material particle and a surface-treated chemical liquid material in which the solvent is completely evaporated. Before the solvent in the chemical solution evaporates, it is uniformly dispersed in the chemical solution for surface treatment, and the antibacterial layer is maintained at a concentration of 20 to 500 ppm;
Touch control screen with antibacterial layer.   The nanometer-class metal material has biochemical activity, can penetrate bacterial cell walls, has the effect of spontaneously dying by altering intracellular enzyme protein, and has a particle diameter of 1 nm to 100 nm. The contact control screen having an antibacterial layer according to claim 8, which is a material.   The contact control according to claim 9, wherein the nanometer-grade metal material is at least one of nanometer gold (Au), nanometer silver (Ag), nanometer copper (Cu), nanometer zinc (Zn), or nanometer platinum (Pt). screen.   The nanometer-grade metal material is a composition or compound containing at least one of nanometer gold (Au), nanometer silver (Ag), nanometer copper (Cu), nanometer zinc (Zn), or nanometer platinum (Pt). 10. The touch control screen according to 9.   The contact control screen according to claim 9, wherein the chemical liquid for the surface treatment is a chemical liquid necessary for performing a surface treatment such as a curing treatment, an anti-abrasion treatment, an anti-glare treatment, or an anti-reflection treatment.

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