JP2001328846A - Method for preparation of transparent non-glare face and transparent non-glare touch screen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for preparation of a transparent, non-glare face with excellent productivity. SOLUTION: This method for producing the transparent ton-glare face on a glass substrate 1 comprises a pretreatment comprising one or more treatment spraying a polymer solution 3a of an inorganic polymer having Si-N ponds and hydrogen, soluble in the organic solvent, in particle state, and burning them to form a water repellant substance in silica particles in the atmosphere and a post-treatment spraying the polymer solution 3a to a surface of the glass substrate 1 after the pretreatment, in particle state and burning the sprayed polymer solution 3a in the particle state and the water repellant substance obtained by the pretreatment to form silica in the atmosphere.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-transmitting non-glare surface processing method and a light-transmitting non-glare touch screen, and more particularly to a light-transmitting non-glare touch screen suitable for a display device or a touch screen. The present invention relates to a translucent non-glare surface processing method used for forming a non-glare surface and a translucent non-glare touch screen obtained by the method.

[0002]

2. Description of the Related Art Both display screens and touch screens are required to have clean screens. This requires high transparency, that is, transparency, so that the image information from behind can be seen clearly, and the image information from behind is viewed from the front through those screens, but does not reflect the light incident on the screen from the front. Non-glare properties must be satisfied at the same time.

[0003] In order to satisfy this, conventionally, the surface of a transparent glass substrate has been roughened by etching with hydrofluoric acid so as to satisfy translucency and non-glare properties.

[0004]

The conventional surface roughening treatment of glass surface with hydrofluoric acid is a surface treatment for forming fine concave portions on the surface of a glass substrate by etching to roughen the surface. There are fine bubbles in the glass, which may be greatly opened due to the etching effect of the hydrofluoric acid treatment. Such a wide open air bubble reduces the strength of the glass substrate, and is particularly problematic in a touch screen subjected to a concave pressure. In addition, such a wide open air bubble refracts light in a complicated manner, hinders the transparency of the display, and causes visual noise. For these reasons, the glass substrate after hydrofluoric acid treatment tends to be treated as a defective product on a display screen or a touch screen, and the yield of the glass substrate is 50 to 6%.
It is as low as 0%.

SUMMARY OF THE INVENTION An object of the present invention is to provide a light-transmitting non-glare surface processing method and a light-transmitting non-glare touch screen capable of forming a light-transmitting non-glare surface without a problem of yield in a non-etching method.

[0006]

In order to achieve the above-mentioned object, a light-transmitting non-glare surface treatment method of the present invention has a silicon-nitrogen bonding substance and a hydrogen atom on the surface of a glass substrate, A method in which a polymer solution, which is an organic solvent solution of an inorganic polymer soluble in a solvent, is applied in the form of particles, and the applied particulate polymer solution is fired in the air so as to form an intermediate substance having water repellency, is described as follows. Pre-process to be performed more than once, and apply the polymer liquid to the surface of the glass base material after the pre-process in the form of particles, and bake the applied particulate polymer liquid and the intermediate in the previous process to silica in the air. The first feature is to obtain a light-transmitting non-glare surface in which light-transmitting particles are dispersed on the surface of the base material, including a post-process.

In such a configuration, the polymer liquid can be calcined in the air to form silica. By applying the particles of the polymer liquid and baking it so that the water-repellent substance is generated therein, a water-repellent substance is generated in the particulate polymer liquid to be applied thereafter. While preventing the silica particles from repelling around due to their water repellency and preventing overlapping, they can work to drive into the gap area where the silica particles do not exist, fill them and increase the density, and The water-repellent substance is fired into silica in the subsequent step together with the polymer liquid, so that the silica particles are fired and bonded to the glass substrate at almost one density without overlapping, and the transparency of the silica particles When A non-glare due to diffusely reflect at irregularities these make can be satisfied without extreme uneven due to overlapping of the silica particles. Moreover, by performing the application and firing in the previous step a plurality of times, the density of the silica particles is further increased without overlapping by using the characteristics of the density increase while preventing the overlap by the intermediate substance, and the non-glare property is obtained. Can be improved. In addition, since the light-transmitting non-glare surface is formed by the non-etching method, the glass base material does not greatly open the air bubbles and the yield of the glass base material is good.

[0008] The light-transmitting non-glare surface-treating method of the present invention is also characterized in that an inorganic polymer which has a silicon-nitrogen bond and a hydrogen atom and is soluble in an organic solvent is applied to the surface of a glass substrate in the form of particles. A pre-process in which the applied particulate inorganic polymer is baked in the air at least once so that a silicon-hydrogen bonding substance is generated, and the inorganic polymer is coated on the surface of the glass substrate after the pre-process. And the coated particulate inorganic polymer and the silicon
A second step is to provide a post-process in which the hydrogen bonding substance is baked in the atmosphere to silica to obtain a light-transmitting non-glare surface in which light-transmitting particles are scattered on the substrate surface.

In such a configuration, the silicon-hydrogen bonding substance produced in the preceding step corresponds to one of the water-repellent substances in the first aspect, and exhibits the same function and effect as the first aspect of the invention. .

[0010] In these inventions, the firing temperature in the preceding step is preferably a temperature that does not reach the firing temperature in the subsequent step in order to generate a water-repellent substance, from the viewpoints of production efficiency and stability.

Further, the combination of the pre-step and the post-step can be repeated a plurality of times. In this case, forming a substantially single silica particle layer having no extreme unevenness as described above can be achieved by the above-mentioned number of repetitions. The process is performed by overlapping, and the unevenness due to the silica particles can be more densely and evenly averaged, which is suitable when the non-glare property and the flatness are prioritized over the light-transmitting property.

[0012] The translucent non-glare surface treatment method of the present invention further comprises an organic solvent solution of an inorganic polymer which has a silicon-nitrogen bonding substance and a hydrogen atom on the surface of the glass substrate and is soluble in an organic solvent. A polymer liquid is applied in the form of particles, and the applied particle-form polymer liquid is calcined in the atmosphere to silica to obtain a light-transmitting non-glare surface in which light-transmitting particles are scattered on the substrate surface. A surface treatment method, wherein the coating and the preliminary baking step are performed at least once by performing preliminary baking at a temperature lower than the baking temperature so as to generate a water-repellent substance in the applied particulate polymer liquid. Thereafter, the third feature is that the coating and firing steps are performed to obtain a non-glare surface in which light-transmitting particles are dispersed on the surface of the base material.

In such a configuration, the polymer liquid is applied to the surface of the glass substrate in the form of particles and fired into silica. Prevention of the water-repellent material from overlapping by performing the application and calcination steps after giving priority to the application and calcination steps of calcination at a temperature lower than the calcination temperature at least once so as to generate a substance. The density of the silica particles is increased by the number of repetitions of the coating and calcination steps, and the silica particles are baked and bonded to the glass substrate almost at a single density without overlapping, and the transparency of the silica particles is increased. The non-glare property by irregularly reflecting the irregularities formed by the irregularities can be satisfied without extreme irregularities due to the overlapping of the silica particles. In addition, since the light-transmitting non-glare surface is formed by the non-etching method, the yield of the glass base material is good because the air bubbles of the glass base material are not greatly opened.

[0014] In this case, too, the coating and pre-baking steps,
Combination with the firing step can be repeatedly performed a plurality of times, to form an almost single silica particle layer without an extreme difference in unevenness due to the overlapping of silica particles as described above, by repeating the number of times of the repetition When formed, the irregularities due to the silica particles can be more densely and evenly averaged, which is suitable when non-glare properties and flatness are prioritized over translucency.

In each of the above inventions, the polymer liquid can be applied to the surface of the glass substrate in a particulate form by contact between the polymer liquid in the atomized state and the surface of the glass substrate. Uniform application can be achieved using dispersion.

The contact between the polymer liquid in the atomized state and the surface of the glass substrate is preferably performed by exposing the surface of the glass substrate to the atomization atmosphere of the polymer liquid in terms of uniform application. Exposure of the surface of the material upward to the atomization atmosphere of the polymer liquid is particularly preferable because the material can be applied more uniformly by natural fall from the substantially uniform dispersion state of the atomized state.

When the antimicrobial fine particles having a particle diameter of 300 to 1000 ° smaller than the silica particles to be formed are mixed with the polymer liquid to be applied one or more predetermined times, the polymer liquid retains the antimicrobial fine particles. It is then baked to silica and becomes a binder, which continues to exist on the surface of the glass substrate, so that the translucent non-glare surface can have antibacterial properties, and the hygiene of the touch screen used and touched by an unspecified number of people It is effective for securing. Silica particle size is 5
It is preferable that it is 0 μm or less.

When the particle diameter at the time of the first coating including the relationship between at least the first coating and the next coating of the polymer liquid is larger than the particle diameter at the time of the subsequent coating, the amount of the polymer liquid in the first coating is small. In addition to facilitating the application area ratio on the surface of the glass substrate in a constant density state where the overlap ratio in the number of particles is lower, the particles of the polymer liquid are smaller in the later application than the silica particles in the earlier application. The non-glare surface with good translucency with almost uniform and flat irregularities due to the silica particles being less likely to overlap with the previous silica particles to fill those gaps due to the repelling action of the silica particles due to the water repellency And the quality is stable.

The translucent non-glare touch screen of the present invention is applied to the surface of a transparent glass substrate a plurality of times at different times.
Having a light-transmitting non-glare layer composed of calcined translucent silica particles, excluding the silica particles that are finally applied and calcined, at least of the silica particles calcined and calcined earlier than that The first feature is that the first silica particles have a history of producing a substance having water repellency until the subsequent silica particles are fired.

In such a configuration, the first or the second
The transparent non-glare surface processing method is characterized by the following characteristics: the transparent silica particles are coated and baked a plurality of times on the surface of the glass substrate, and the transparent silica particles have no irregularities due to random overlapping of the particles. A light-transmitting non-glare touch screen having an excellent non-glare surface with good light properties, touch intervals and drag properties is realized, and a non-etching type is used to obtain a good yield without a decrease in strength.

The light-transmitting non-glare touch screen of the present invention also has a light-transmitting non-glare layer made of light-transmitting silica particles applied and fired at different times a plurality of times on the surface of a transparent glass substrate. The second feature of the light-transmitting non-glare layer is that silica particles are substantially single-fired.

[0022] Even in such a configuration, similarly to the case of the first feature, the light-transmitting non-glare surface-forming method of the first or second feature is employed, and the surface of the glass substrate is made of silica having a light-transmitting property. A translucent non-glare touch screen with a non-glare surface with excellent non-glare surface that has no irregularities due to the random and overlapping of dense particles that have been coated and fired multiple times. However, by using the non-etching method, the strength is not reduced and a good yield can be obtained.

In these inventions, if the particle diameter of the silica which is first applied and fired is larger than the particle diameter of the silica which is applied and fired later, the particle density by the first application and firing of silica is increased. It will be easier.

Further, the silica particles finally coated and calcined can carry or contain antibacterial particles, can have antibacterial properties on the light-transmitting non-glare surface, and can have an unspecified number of particles. It is effective to ensure the sanitation of the touch screen used and touched by other people.

Further objects and features of the present invention will become apparent from the following detailed description and drawings. Each feature of the present invention can be used alone or in combination in various combinations as much as possible.

[0026]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a method for forming a light-transmitting non-glare surface according to an embodiment of the present invention.

In this embodiment, as shown in FIG. 1, a clear glass is used as a glass substrate 1 from a transparent surface, and the surface of the glass substrate 1 is formed by a non-etching method by attaching fine silica particles 3 having good light transmission. This is an example of a case where the touch screen 2 is manufactured by forming a translucent non-glare surface. However, the present invention is not limited to this, and is effective when applied to a plate material such as a display screen which requires translucency and non-glare properties or a non-plate material in general.

As a raw material for calcining silica, an inorganic polymer (SiH ₂ NH, for example, perhydropolysilazane manufactured by Tonen Corporation) having a silicon-nitrogen bonding substance Si—N and a hydrogen atom H and soluble in an organic solvent is known. Have been. When a polymer solution, which is an organic solvent solution of the inorganic polymer, is applied and baked in the atmosphere, it reacts with moisture and oxygen in the atmosphere to obtain high-purity silica. For example, when calcined at 450 ° C., amorphous silica SiO ₂ is obtained. The reaction formula is as follows: -SiH ₂ NH- + O ₂ → SiO ₂ + NH ₃ -SiH ₂ NH- + H ₂ O → SiO ₂ + NH ₃ + H ₂ Generation is confirmed.

In the IR spectrum of this silica, as shown in FIG. 3, the absorption of siloxane Si—O has grown, and the absorption due to components other than silica, which is found in the liquid inorganic polymer to be applied, has almost completely been burned off. The characteristics of this silica include a density of 2.1 to 2.2 g / cm ³ , a refractive index of 1.46,
The resistivity is about 10 ¹⁵ , the withstand voltage> 2 × 10 ⁶ V / cm, the relative dielectric constant is 4.2４1 MHz, the light transmittance in the visible region is 98% or more, and the transparency in the film form is the same as that of quartz glass. Are equivalent.

Then, the present inventors applied the above-mentioned liquid inorganic polymer, that is, the polymer liquid 3a to the glass substrate 1 in the form of particles as shown in FIG. Non-glare surface 4
Research and development.

There are various technologies for the touch screen, such as an analog capacitive coupling system, an optical system, an ultrasonic system, and a resistive film system. In the ultrasonic method, a technique has been developed in which a signature drawn by dragging a finger on a touch screen is read together with a change in the pen pressure to identify the sign. In this case, if there is extreme unevenness on the non-glare surface of the touch screen, a large writing pressure is generated during dragging that is not related to the intention or habit of the user, resulting in noise and a reading error. In addition, the dragging finger gives a sense of being caught, giving the user a sense of discomfort and discomfort.
That is, the touch feeling is poor.

However, according to the experience of the present inventors, in order to obtain a non-glare surface having a predetermined glossiness by applying the polymer liquid 3a to the glass substrate 1 in the form of particles, the above-mentioned extreme unevenness is required. Hard to avoid. When the coating density is high, the polymer liquids 3a adjacent to each other come into contact with each other to be aggregated into one, and it is easy to form a film, and the non-glare property cannot be obtained. If the coating density is low, the gap between the particles becomes large, and the non-glare property with a high gloss cannot be obtained. Therefore, when the coating density is reduced and the coating is performed a plurality of times, as shown in the experimental example in FIG.
1, 34 overlaps doubly or triple, causing extreme unevenness. In these, as the operation of applying the polymer liquid 3a in the form of particles is repeated, extreme irregularities are reduced and averaged as a problem of probability. However, this requires repeating the coating operation many times, and the more the silica particles 3 overlap, the lower the transparency, and thus the practicality as a touch screen is lacking.

On the other hand, the present inventors have found from various experiments that a water-repellent substance is produced together with siloxane in the calcination of the polymer liquid 3a to the silica.
This water-repellent substance is, for example, a silicon-hydrogen bonding substance Si-
H, which repels the polymer liquid 3a. Such an intermediate substance has, for example, a baking temperature of 80 to 200 ° C. and a baking time of 15 minutes.
It can be obtained stably by setting to minutes to 5 minutes. If the firing temperature is high, the firing time may be short, and if the firing temperature is low, the firing time is long. FIG. 3 shows an example of the spectrum, which is a spectrum obtained when baking is performed at 80 ° C. for 10 minutes. In FIG. 3, it can be confirmed that the water-repellent substance Si-H is generated together with the siloxane.

The present embodiment skillfully utilizes the characteristics of these silicas and the characteristics of a water-repellent substance such as Si-H generated during the firing of silica. The silicon-nitrogen bonding substance Si-
Polymer liquid 3a (SiH ₂ NH, which is an organic solvent solution of an inorganic polymer having N and hydrogen atoms H and soluble in an organic solvent.
For example, polysilazane (manufactured by Tonen Co., Ltd.) is applied in the form of particles as shown in FIG. 1, and the applied particle-like polymer liquid 3a is fired at least once in the air so as to generate a water-repellent substance. air and pre-process, the pre-said inorganic polymer 3a on the surface of the glass substrate 1 is coated particulate after the step, the intermediate product according to the coated particulate polymer solution 3a and before step to silica SiO ₂ to perform And a post-baking step in the inside, so as to obtain a translucent non-glare surface 4 in which translucent silica particles 3 are scattered on the surface of the glass substrate 1 as shown in FIGS.

As described above, the inorganic polymer is applied to the glass substrate 1 in the form of particles and baked on the glass substrate 1 at least once so as to produce the water-repellent substance. The siloxane particles or silica particles 3 in which a water-repellent substance is generated by firing on the surface of the material 1 are formed at least once.

Here, when the polymer liquid 3a is first applied and fired on the glass substrate 1, the particle diameter is made larger than that of the polymer liquid 3a which is applied and fired later. It is easy to increase the particle density by the first application and baking, and for the particulate polymer liquid 3a to be applied after that, the above-mentioned silica particles 3 in which the water-repellent substance is generated turn around due to the water repellency. The silica particles 3
It can be made to work in the gap region where there is no gap and fill it up to increase the density. The silica particles 3
The water-repellent substance therein is calcined together with the polymer liquid 3a to silica in a later step.

As a result, the first silica particles 3 and the second silica particles 31 are baked and bonded to the glass substrate 1 at a density of approximately one without any vertical overlap, thereby bonding the silica particles 3 and 31 with the transparency. The non-glare property due to irregular reflection by the irregularities created by them can be satisfied without extreme irregularities due to the overlapping of the silica particles 3 and 31.

Moreover, by performing the coating and baking in the previous step a plurality of times, the characteristics of densification while preventing the water-repellent substance from being overlapped are repeatedly used, so that the silica particles 3 and 31 can be further overlapped without overlapping. Density can be increased. Further, since the light-transmitting non-glare surface is formed by the non-etching method, the air bubbles of the glass substrate 1 are not greatly opened, and the yield of the glass substrate 1 is good in terms of strength and light-transmitting properties. is there.

The molecular weight of the inorganic polymer is related to the sintering characteristics of the polymer liquid 3a and the like.
It may be set to about 4000, and the number average molecular weight is 700 to 1
Preferably, a 20% solution of 500 perhydropolysilazane is used. Examples of the solvent include aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbon solvents, halogenated hydrocarbons such as halogenated methane, halogenated ethane, and halogenated benzene, aliphatic ethers, alicyclic ethers. And the like. Preferred solvents are methylene chloride, chloroform, carbon tetrachloride, bromoform, ethylene chloride, ethylidene chloride, trichloroethane, halogenated hydrocarbons such as tetrachloroethane, ethyl ether, isopropyl ether, ethyl butyl ether, butyl ether, 1,2-dioxyethane, Ethers such as siloxane, dimethyldioxane, tetrahydrofuran, tetrahydropyran, pentanehexane, isohexane, methylpentane, heptane, isoheptane,
Octane, isooctane, cyclopentane, methylcyclopentane, cyclohexane, methylcyclohexane,
Hydrocarbons such as benzene, toluene, xylene, and ethylbenzene.

When these solvents are used, two or more solvents may be mixed in order to adjust the solubility of the perhydropolysilazane and the evaporation rate of the solvent.

The water-repellent substance is a silicon-hydrogen bonding substance S
In the case of iH, according to the findings of the present inventors, it is preferable to set the firing temperature at 80 to 200 ° C. and the firing time at 15 to 5 minutes. Further, taking as an example a baking temperature for such a water-repellent substance and a baking temperature of 450 ° C. for silica, the baking step of the present embodiment uses the baking temperature of the previous step to generate a water-repellent substance. For this reason, it can be considered that the heat treatment is performed at a temperature that does not reach the firing temperature in the subsequent step, which is suitable in terms of the efficiency of generation of the water-repellent substance and the stability.

Further, the relationship between the pre-process and the post-process in each case is that the water-repellent substance can be finally baked into silica from the viewpoint of the above-mentioned coating and the sintering of the coated particulate polymer liquid 3a. Coating, pre-sintering step, and subsequent application in which the particles 3 are pre-sintered at a temperature lower than the sintering temperature so as to generate a water-repellent intermediate substance, and the applied particulate polymer liquid 3a and the previous water repellency Can be also grasped as a relationship with the coating and baking steps of baking the substance with silica. Other water-repellent substances include Si-methyl,
Examples include Si-phenyl and Si-alkyl fluoride.

However, the present inventors have not sought critical conditions, but have determined various other firing conditions, other various water-repellent substances, and other polymer liquids 3a for firing silica containing the same. Cannot be denied, and is basically not limited to the above.

In each of the above cases, the contact of the atomized polymer liquid 3a with the surface of the glass substrate 1 allows the polymer liquid 3a to be applied to the surface of the glass substrate 1 in the form of particles. Uniform application can be performed using the atomization dispersion of 3a. The contact between the polymer liquid 3a in the atomized state and the surface of the glass substrate 1 is more preferably performed by exposing the surface of the glass substrate 1 to the atomizing atmosphere of the polymer liquid 3a in terms of uniform application. If the surface of the base material 1 is exposed upward to the atomizing atmosphere of the polymer liquid 3a, it can be applied more uniformly by spontaneous drop from a substantially uniform dispersion state of the atomized state.

When one or more predetermined times, for example, the antibacterial fine particles 32 smaller than the particles 31 to be formed are mixed into the polymer liquid 3a to be finally applied and the silica is calcined, the polymer liquid 3a becomes antibacterial. The transparent non-glare surface is stably provided with antibacterial properties because the non-glare surface of the glass substrate 1 is kept baked to the silica particles 3 while retaining the conductive fine particles 32 to form a binder. This is effective for ensuring the hygiene of the touch screen used and touched by an unspecified number of people.

As the antibacterial fine particles 32, inorganic particles containing antibacterial metal ions such as Ag, Cu, and Zn are suitable for handling and maintaining antibacterial properties. Antibacterial fine particles 3
The smaller the particle size of 2, the larger the specific surface area, the larger the ratio of the antibacterial action surface to the mass, which is advantageous for exhibiting antibacterial properties. Further, it is necessary that the polymer liquid 3a be dispersed without being aggregated in the polymer liquid 3a. In order to satisfy this, it is preferable that the particle size of the antibacterial fine particles 32 is about 300 to 1000 °, and if necessary, the particles are dispersed to prevent aggregation.

The non-glare surface formed by the above-mentioned conventional hydrofluoric acid treatment has a large concave portion of about 24.48 μm and a small concave portion of about 7.771 μm, and has a non-glare surface. As an example, the particle diameter of the silica particles 3 and 31 in the present embodiment is about 16.126 μm for a large one, about 5.912 μm for a medium one, and about 0.61 μm or less for a small one. The surface is flat, and a non-glare surface almost equal to that in the case of hydrofluoric acid treatment is obtained.

When the particle diameter at the time of the first application including the relationship between at least the first application and the next application of the polymer liquid 3a is larger than the particle diameter at the time of the subsequent application, the polymer liquid 3a is used at the first application. In addition to facilitating the gain of the coating area ratio on the surface of the glass substrate 1 in a constant density state where the overlap ratio is low with a small number of particles, the particles of the polymer liquid 3a in the later coating are smaller than the silica particles 3 in the preceding coating. Due to its small size, the silica particles 3 are repelled by the water repellency to fill the gaps between them, so that they are less likely to overlap with the previous silica particles 3 and have substantially uniform and flat irregularities due to the silica particles 3. Easy to form a non-glare surface 4 with good translucency,
Quality is stable. In addition, by mixing silica particles having different particle diameters, it is possible to increase the irregular reflectance and the gross degree without causing extreme unevenness caused by the vertical overlapping of the particles.

By the way, if the touch screen employs an ultrasonic method, a glass plate having a thickness of about 3 mm is suitable for sufficiently exhibiting ultrasonic characteristics. Therefore, a glass substrate 1 made of clear glass having a thickness of 3 mm is used as the glass substrate 1 and the above-mentioned translucent non-glare surface treatment is performed to apply and bake a plurality of times on the surface of the transparent glass substrate at different times. Having a translucent non-glare layer composed of translucent silica particles, excluding the silica particles that are finally applied and calcined, at least the first of the previously applied and calcined silica particles The silica particles of the above can provide a light-transmitting non-glare touch screen having a history of producing a substance having water repellency until the subsequent silica particles are fired.

The obtained translucent non-glare touch screen also has a translucent non-glare layer made of translucent silica particles which are applied and fired at different times a plurality of times on the surface of a transparent glass substrate. The light-transmitting non-glare layer is also obtained by baking silica particles almost once.

Each of them exhibits suitable translucency, suitable non-glare properties, suitable drag properties, and suitable ultrasonic characteristics, and is defective due to defects of the glass substrate material itself. There is no. Therefore, if the quality inspection of the glass substrate material is sufficiently performed, the problem of the yield does not occur.

Some examples of this embodiment are shown below together with comparative examples.

Example 1 A perhydropolysilazane N--N1 having a number average molecular weight of 700 was coated on the surface of a glass substrate made of clear glass having a thickness of 3 mm.
10 (manufactured by Tonen Co., Ltd.) was sprayed twice using a 20% xylene solution. After blowing once, baking was performed at 150 ° C. for 5 minutes, and after blowing twice, baking was performed at 450 ° C. for 60 minutes. 2
At the time of re-blowing, silver having a particle diameter of 700 ° was used as the antibacterial fine particles.

The surface state of the translucent non-glare touch screen thus obtained is shown in FIG.
(A) or FIG. 5 (a), and when the magnification is 400 times, it was as shown in FIGS. 4 (b) and 5 (b).
The enlarged area shown in FIG. 4B and FIG.
(A) or a corresponding portion in FIG. 5 (a) is shown with a frame. 4 (b) and 5 (b), black spots are the antibacterial fine particles 32, and no vertical overlap between the first silica particles 3 and the second silica particles 31 is observed.

The antibacterial property on the surface of the non-glare touch screen in Example 1 was as follows. In Escherichia coli by the film adhesion method, the initial number of bacteria decreased from 10 ⁵ to 10 after 6 hours at room temperature, and Aspergillus niger was increased. Then, the initial number of bacteria 10 ⁵ was increased to 10 ³ and room temperature 2 after 6 hours at room temperature.
After 4 hours, it decreased to 10 ² , and blue mold (penicillium citrinum) also showed an initial bacterial count of 10 ⁵ and 1 hour after room temperature at 24 hours.
It dropped to zero.

Example 2 Perhydropolysilazane N--N1 having a number average molecular weight of 700 was coated on the surface of a glass substrate made of clear glass having a thickness of 3 mm.
It was sprayed three times using a 20% xylene solution of 10 (manufactured by Tonen Corporation). After the first blow, baking was performed at 120 ° C. for 10 minutes, after the second blow, baking was performed at 120 ° C. for 10 minutes, and after the third blow, baking was performed at 450 ° C. for 60 minutes. At the time of blowing three times, silver having a particle diameter of 700 ° was used as antibacterial fine particles.

The surface state of the translucent non-glare touch screen thus obtained is shown in FIG.
(A) or FIG. 7 (a), and when shown at 400 times, as shown in FIG. 6 (b) and FIG. 7 (b).
The enlarged areas shown in FIG. 6B and FIG.
(A) or corresponding parts in FIG. 7 (a) are shown with a frame. 6 (b) and 7 (b), the black spots are the antimicrobial fine particles 32, and the vertical overlap of the first silica particle 3, the second silica particle 31, and the third silica particle 34 The dispersion density of the silica particles was hardly observed and the dispersion density of the silica particles was improved as compared with Example 1. In addition, antibacterial properties were almost the same as those in Example 1.

Example 3 Perhydropolysilazane N--N1 having a number average molecular weight of 700 was coated on the surface of a glass substrate made of clear glass having a thickness of 3 mm.
10 (manufactured by Tonen Co., Ltd.) was sprayed twice using a 20% xylene solution. After blowing once, baking was performed at 80 ° C. for 10 minutes, and after blowing twice, baking was performed at 450 ° C. for 60 minutes. 2
At the time of re-blowing, silver having a particle diameter of 700 ° was used as the antibacterial fine particles.

The surface state of the translucent non-glare touch screen thus obtained is shown in FIG.
(A) or FIG. 9 (a), and when shown at 400 times, as shown in FIGS. 8 (b) and 9 (b).
The enlarged areas shown in FIGS. 8B and 9B correspond to FIG.
9 (a) or corresponding parts in FIG. 9 (a) are framed. 8 (b) and 9 (b), the black spots are the antibacterial fine particles 32, and the first silica particles 3 and the second silica particles 31 have very little vertical overlap.
In addition, antibacterial properties were almost the same as those in Example 1.

Comparative Example A perhydropolysilazane N--N1 having a number average molecular weight of 700 was formed on the surface of a glass substrate made of clear glass having a thickness of 3 mm.
It was sprayed three times using a 20% xylene solution of 10 (manufactured by Tonen Corporation). After blowing once, after blowing twice, both were dried at room temperature, and after blowing three times, baking was performed at 450 ° C. for 60 minutes.

The surface state of the translucent non-glare touch screen thus obtained is shown in FIG.
(A) or as shown in FIG.
The magnification was as shown in FIGS. 10 (b) and 11 (b). The enlarged areas shown in FIG. 10B and FIG. 11B are indicated by corresponding frames in FIG. 10A or FIG. 11A with a frame. FIG. 10 (b), FIG.
In (b), black spots are antibacterial fine particles 32, and the first silica particles 3, the second silica particles 31, and the third silica particles 34 are often vertically overlapped. The dispersion density is only about halfway between Examples 1 and 3 of the double blow and Example 2 of the triple blow.

In each of the embodiments, antibacterial fine particles are mixed with the polymer liquid of the last blow and antibacterial processing is performed simultaneously with non-glare surface treatment. The number of times and timing to perform as described above may be any time, may be performed in all of the number of times of applying and firing silica, or may be performed one or more times less than the number of times of application and firing, the number of times of application and firing It is up to you to do it.

It should be noted that the above-mentioned combination of the pre-process and the post-process, and the combination of the coating and the calcination process and the coating and the calcination process can be repeated a plurality of times, respectively. It is possible to form a layer of silica particles 3 and 31 which are almost single layer by overlapping the same number of times as the above-mentioned number of repetitions, so that unevenness due to silica particles 3 and 31 can be more densely and averaged, and non-glare This is suitable for the case where the property or flatness is prioritized over the light transmitting property.

[0064]

According to the present invention, as is apparent from the above description, the silica particles are bonded to the surface of the glass substrate almost in a single line without overlapping vertically, and the averaging without extreme unevenness is achieved. At the same time as forming the irregularly-reflected surface, the silica particles forming the irregularly-reflective surface have high transparency and satisfy high translucency, so that a high-quality translucent non-glare surface can be obtained. In addition, since the non-etching method is used, air bubbles in the glass substrate are not greatly opened, and the yield is good.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a touch screen having a translucent non-glare surface according to an embodiment of the present invention, and is a cross-sectional view taken along line II of FIG. 4B.

FIG. 2 is an IR spectrum diagram of silica obtained by calcining a polymer solution.

FIG. 3 shows a polymer liquid applied to a glass substrate in the form of particles.
It is an IR spectrum figure when baking at 0 degreeC for 10 minutes.

FIGS. 4A and 4B are micrographs of one portion showing the state of the surface of the touch screen in Example 1, wherein FIG. 4A shows a case of 100 times and FIG. 4B shows a case of 400 times.

5A and 5B are micrographs of another portion showing a state of the touch screen surface of Example 1, wherein FIG. 5A shows a case of 100 times and FIG. 5B shows a case of 400 times.

FIGS. 6A and 6B are micrographs of one portion showing the state of the touch screen surface of Example 2, wherein FIG. 6A shows a case of 100 times and FIG. 6B shows a case of 400 times.

FIGS. 7A and 7B are micrographs of another portion showing the state of the touch screen surface of Example 2, wherein FIG. 7A shows a case of 100 times and FIG. 7B shows a case of 400 times.

FIGS. 8A and 8B are photomicrographs of one portion showing the state of the touch screen surface of Example 3, in which FIG. 8A shows a case of 100 times and FIG. 8B shows a case of 400 times.

FIGS. 9A and 9B are photomicrographs of another portion showing the state of the surface of the touch screen of Example 3, in which FIG. 9A shows the case of 100 times and FIG. 9B shows the case of 400 times.

FIGS. 10A and 10B are photomicrographs of one portion showing a state of a touch screen surface of a comparative example. FIG. 10A shows a case of 100 times, and FIG. 10B shows a case of 400 times.

FIGS. 11A and 11B are micrographs of another portion showing the state of the touch screen surface of the comparative example, in which FIG. 11A shows a case of 100 times and FIG. 11B shows a case of 400 times.

FIG. 12 is a cross-sectional view of a translucent non-glare touch screen according to an experimental example related to the present invention.
(B) is a cross-section along the line XII-XII.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Glass base material 2 Touch screen 3, 31, 34 Silica particles 3a Polymer liquid 4 Non-glare surface 32 Antibacterial fine particles

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // A01N 59/16 A01N 59/16 A F-term (Reference) 2H042 BA02 BA03 BA13 BA15 BA19 4G059 AA08 AB09 AB13 AC02 EA05 EA12 EB05 EB06 FA05 FA22 FA28 FB05 GA01 GA04 GA12 4H011 AA02 BA01 BB18 BC18 DA07 DC10 DD06

Claims (16)

[Claims] 1. A polymer solution which is a solution of an inorganic polymer having a silicon-nitrogen bonding substance and a hydrogen atom and soluble in an organic solvent, which is an organic solvent solution, is applied to the surface of a glass substrate in the form of particles. And baking the polymer liquid in the air at least once in the air so as to form an intermediate substance having water repellency, and applying the polymer liquid to the surface of the glass substrate after the previous step in the form of particles. And a post-process in which the coated particulate polymer liquid and the intermediate obtained in the preceding process are calcined in the atmosphere to silica to obtain a light-transmitting non-glare surface in which light-transmitting particles are scattered on the substrate surface. A translucent non-glare surface processing method characterized by the above-mentioned. 2. A polymer solution, which is an organic solvent solution of an inorganic polymer having a silicon-nitrogen bond and a hydrogen atom and soluble in an organic solvent, is applied on the surface of a glass substrate in the form of particles. A step of firing the polymer liquid in the air at least once so that a silicon-hydrogen bonding substance is produced, and applying the polymer liquid to the surface of the glass base material after the previous step in a particle form, And a post-process in which the coated particulate polymer liquid and the silicon-hydrogen bonding material obtained in the previous process are baked to silica in the air, and the base material surface has a light-transmitting non-glare surface in which light-transmitting particles are dispersed. A light-transmitting non-glare surface treatment method, characterized by being obtained. 3. The translucent non-glare surface treatment method according to claim 1, wherein the firing temperature in the pre-process is a temperature that does not reach the firing temperature in the post-process. 4. A translucent non-glare surface treatment method in which a combination of a pre-process and a post-process is repeated a plurality of times. 5. A polymer solution, which is an organic solvent solution of an inorganic polymer having a silicon-nitrogen bonding substance and a hydrogen atom and soluble in an organic solvent, is applied to the surface of a glass substrate in the form of particles. A non-glare surface processing method for obtaining a light-transmitting non-glare surface in which particles of a light-transmitting particle are scattered by sintering a polymer liquid in the form of silica in the atmosphere to silica, wherein the coating and the coating After performing the coating and calcination steps of calcining the particulate polymer liquid at a temperature lower than the calcination temperature so as to generate an intermediate substance having water repellency, performing the coating and calcination steps at least once. A non-glare surface processing method comprising obtaining a non-glare surface in which light-transmitting particles are scattered on the substrate surface. 6. The translucent non-glare surface treatment method according to claim 5, wherein a combination of the application and the preliminary firing step and the application and the firing step is repeated a plurality of times. 7. The transparent liquid according to claim 1, wherein the polymer liquid is applied to the surface of the glass substrate in a particulate form by contact between the polymer liquid in an atomized state and the surface of the glass substrate. Optical non-glare surface processing method. 8. The translucent non-glare surface according to claim 7, wherein the contact between the atomized polymer liquid and the surface of the glass substrate is performed by exposing the surface of the glass substrate to the atomization atmosphere of the polymer liquid. Processing method. 9. The method according to claim 8, wherein the surface of the glass substrate is exposed upward to the atomization atmosphere of the polymer liquid. 10. A polymer liquid to be applied one or more predetermined times, having a particle size 3 smaller than the applied particles formed by the polymer liquid.
The translucent non-glare surface treatment method according to any one of claims 1 to 9, which is performed by mixing antibacterial agent fine particles of from 00 to 1000 °. 11. The method according to claim 1, wherein the particle size at the time of the first application is larger than the particle size at the time of the subsequent application, including the relationship between at least the first application and the next application of the polymer liquid. 4. The method for forming a translucent non-glare surface according to item 4. 12. The translucent non-glare surface treatment method according to claim 1, wherein the silica is applied with a particle diameter of 50 μm or less. 13. A transparent glass substrate having a light-transmitting non-glare layer composed of light-transmitting silica particles applied and fired at different times a plurality of times on the surface of a transparent glass substrate. Excluding the particles, at least the first silica particles of the silica particles coated and calcined earlier have a history of producing a substance having water repellency until subsequent calcining of the silica particles. A translucent non-glare touch screen. 14. A translucent non-glare layer comprising translucent silica particles applied and fired at different times a plurality of times on the surface of a transparent glass substrate, wherein the translucent non-glare layer is made of silica. A translucent non-glare touch screen characterized in that the particles are fired almost single layer. 15. The translucent non-glare touch screen according to claim 13, wherein the particle diameter of the silica applied and fired first is larger than the particle diameter of the silica applied and fired later. . 16. The translucent non-glare according to claim 13, wherein the silica particles coated and calcined at one or more predetermined times carry or contain antibacterial particles. touch screen.