KR101392772B1 - Strengthened glass with function of sterilization and deodorization, and touch screen panel comprising the same - Google Patents

Abstract

The present invention relates to strengthened glass and a touch screen panel including the same. The strengthened glass comprises: an adhesive layer to be adhered onto the touch screen panel; a protective film provided on the adhesive layer; an adhesive film provided on the protective film; a strengthened glass layer provided on the adhesive film; and a photocatalyst layer provided on the glass layer. The touch screen panel comprises: a panel on which an image is realized; a touch screen provided on the panel; a glass window provided on the touch screen; and the strengthened glass which is adhered onto the glass window and formed in accordance with the present invention. When the strengthened glass according to the present invention is adhered to the touch screen panel to be used, even a deodorization function as well as an anti-bacterial function or a sterilization function can be added, reliability of pollution prevention can increase, and excellent transmittance and slimness can be easily achieved such that the present invention is very suitable for use in a mobile device.

Description

TECHNICAL FIELD [0001] The present invention relates to a tempered glass having sterilizing and deodorizing function and a touch screen panel including the tempered glass,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tempered glass and a touch screen panel including the same, and more particularly, to a tempered glass and a touch screen panel including the tempered glass and the sterilizing and deodorizing function.

A touch screen panel attached to a display is widely used as an input device for mobile devices such as a CNS (Car Navigation System), a PDA (Personal Digital Assistant), a digital camera, a mobile phone, and the like. Such a touch screen panel is an input device suitable for a user interface in which an inputable area is changed according to an application program of the device, thereby making the user interface more convenient and flexible. It can also provide additional functions such as drawing, writing, and multi-touch.

In recent years, display devices have been replaced by flat panel display devices such as organic light emitting display (OLED) and liquid crystal display (LCD) devices. Such a flat panel display device generally has a structure in which a glass window, which is a protective tempered glass, is installed on a panel on which an image is formed. If such a glass window is broken by an external impact, , The damaged glass window must be repaired or replaced, and in some cases, the internal display device may be damaged and the device itself may become unusable. It can also be contaminated with foreign air, foreign matter or contaminated hands of humans, and bacteria may be present. Also, as the time for using the display device increases, a problem that the smell is fixed due to user's bad breath may occur.

The prior art has not examined the display device having the sterilization and deodorizing function in addition to the breakage prevention function.

<Prior Art Literature>

Korean Patent No. 10-1026868

Korean Patent No. 10-0981268

Korean Patent No. 10-1103659

Korean Patent Publication No. 10-2011-0101027

Disclosure of the Invention The present invention has been developed in consideration of the above situation, and it is an object of the present invention to provide a sterilizing, sterilizing, or sterilizing function on a tempered glass attached to a touch screen panel, It is an object of the present invention to provide a technique capable of improving the reliability of a touch screen panel and a display device having a tempered glass.

According to an aspect of the present invention, there is provided a touch screen panel comprising: an adhesive layer to be adhered on a touch screen panel; A protective film provided on the adhesive layer; An adhesive film provided on the protective film; A reinforced glass layer provided on the adhesive film; And a photocatalyst layer provided on the glass layer.

According to another aspect of the present invention, A touch screen provided on the panel; A glass window provided on the touch screen; And a touch screen panel attached to the glass window and including the tempered glass according to the present invention.

When the tempered glass according to the present invention is attached to a touch screen panel, it can be sterilized, sterilized or sterilized, can be provided with a deodorizing function, and reliability against contamination can be increased. Further, the touch screen panel having the tempered glass having the sterilizing and deodorizing function according to the present invention is very suitable for use in mobile devices such as mobile phones because of its excellent transmittance and slimness.

1 is an exploded perspective view of a tempered glass and a display according to an embodiment of the present invention.
FIG. 2 is a perspective view of the reinforcing glass and the display device of FIG. 1; FIG.
Figs. 3 and 4 are cross-sectional side views showing examples of bonding of reinforcing glass on the glass window of the display device according to the embodiment. Fig.
Fig. 5 is a detailed view of the panel of Fig. 4. Fig.
FIG. 6 is a detailed view of the touch screen of FIG.
7 is a detailed view of the tempered glass according to the first embodiment of the present invention.
Fig. 8 is a detailed view of the tempered glass of Fig. 7. Fig.
9 is a view showing a tempered glass according to a second embodiment of the present invention.
10 is a view showing a tempered glass according to a third embodiment of the present invention.
11 to 13 are views showing examples of plan views of the tempered glass of FIG.
14 is a view showing a tempered glass according to a fourth embodiment of the present invention.
15 is a view showing a tempered glass according to a fifth embodiment of the present invention.
16 is a view showing a tempered glass according to a sixth embodiment of the present invention.
17 is a view showing a tempered glass provided on a glass window according to a seventh embodiment of the present invention.
Fig. 18 is a detailed view of the tempered glass of Fig. 17. Fig.
19 is a view showing a tempered glass according to an eighth embodiment of the present invention.
20 is a graph comparing sterilization rates with time in Comparative Examples and Examples.
21 is a graph comparing transmittances according to wavelengths in Comparative Examples and Examples.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention.

FIG. 1 is an exploded perspective view of a tempered glass and a display according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a combination of the tempered glass and the display of FIG.

1 and 2, a display device 11 includes a touch screen panel 20 having a glass window 21 in a case 13, a tempered glass 31 on the glass window 21, .

The case 13 may be made of a metallic material or a non-metallic material and supports and protects the touch screen panel 20. The shape and material of the case 13 may vary depending on the size of the display device 11, but the present invention is not limited thereto.

The touch screen panel 20 displays an image and senses a user's touch or operation.

The glass window 21 includes a display area A1 and a non-display area A2. The display area A1 displays image information, and the non-display area A2 prevents light spots. The non-display area A2 may be formed by a window decoration disposed under the glass window 21, or may be formed by attaching an adhesive tape. Alternatively, a printed area may be formed on the lower surface of the glass window 21 to provide an appearance of the non-display area A2. However, the present invention is not limited thereto.

The reinforcing glass 31 is bonded to the glass window 21 and is formed of a light-transmitting material. The reinforcing glass 31 may be made of glass or sapphire. The glass material may be specifically selected from soda lime glass, pyrex material, and quartz material.

Here, the glass window 21 may be a first glass, the tempered glass 31 may be defined as a second glass, and the glass window 21 and the tempered glass 31 may be made of the same material, .

A button hole 3 and a speaker hole 4 may be formed in the glass window 21 and the reinforcing glass 31 may be inserted into the hole 5 corresponding to the button hole 3 and the speaker hole 4 The hole 6 is not limited to this.

The surface of the tempered glass 31 (that is, the light emitting surface) is an area exposed by a user to touch. Bacteria or foreign matter may be present on the exposed surface.

A photocatalyst is formed on the upper surface of the tempered glass 31. The photocatalyst receives a light source to cause a catalytic reaction to perform functions such as sterilization and deodorization. The photocatalyst is a material that causes a catalytic reaction when it receives a light source. The photocatalyst is a material that causes a catalytic reaction when it receives a light source. Or a mixture or a compound containing at least one of these metals. For example, an oxide, a fluoride, or a nitride having at least one of the metals may be selected. The photocatalyst may include, for example, an oxide of Ti, that is, titanium dioxide. The titanium dioxide has good acid resistance, good alkali resistance and is harmless to the human body. The light source includes a light source of ultraviolet light such as visible light or ultraviolet light such as sunlight and fluorescent light.

Here, when the ultraviolet light source is applied to the photocatalyst, for example, electrons and holes are formed to generate hydroxyalcic acid (-OH) and superoxide (O ₂ ^- ) having enhanced oxidizing power. These hydroxathalates and superoxides oxidize and decompose organic compounds to convert them into water (H ₂ O) and carbon dioxide (CO ₂ ). In this way, air pollutants are oxidized and decomposed into harmless water and carbon dioxide, and the organic compounds, which are contaminants in water, are decomposed into water and carbon dioxide. Since the bacteria are also organic, they are oxidized and decomposed by the strong oxidizing action of the photocatalyst and sterilized.

When the photocatalyst formed on the tempered glass 31 is exposed to an external light source for a predetermined time, a catalytic reaction is caused to perform sterilization, sterilization, sterilization or deodorization. The photocatalyst can be sterilized or deodorized by an internal light source.

Figs. 3 and 4 are cross-sectional side views showing examples of bonding of reinforcing glass on the glass window of the display device according to the embodiment. Fig.

3, the touch screen panel 20 includes a panel 15 for implementing an image, a glass window 21 as a tempered glass for protecting the panel 15, And a touch screen 17 for realizing a touch operation is coupled between the touch screen 15 and the touch screen 17. A pressure sensitive adhesive 16 is attached between the panel 15 and the touch screen 17 and a pressure sensitive adhesive 18 is also attached between the touch screen 17 and the glass window 21. The pressure-sensitive adhesive may include, for example, an optical clean adhesive (OAC). A polarizing film (not shown) may further be attached between the panel 15 and the touch screen 17 or between the touch screen 17 and the glass window 21, And functions to suppress the reflection of external light and is also attached directly to the inner surface of the glass window 21 so as to prevent scattering during breakage. That is, even if the glass window 21 made of glass is broken due to the polarizing film, the pieces do not scatter. Further, by attaching the polarizing film additionally, it is possible to provide a privacy protection function for preventing the screen from being seen from the side of the display device.

On the glass window 21, a tempered glass 31 is attached. The lower surface E2 of the tempered glass 31 can be attached to the glass window 21 and the upper surface E1 outputs image information. That is, the lower surface E1 of the tempered glass 31 is the light incidence side, and the upper surface E2 is the light output side.

The width D2 of the tempered glass 31 may be narrower than the width D1 of the glass window 21 or less than the width D1 of the glass window 21, for example. The width difference D3 between the tempered glass 31 and the glass window 21 may be 1 mm or less, but is not limited thereto. Here, the glass window 21 may be disposed on the protective film 33, but the present invention is not limited thereto.

5, the panel 15 may have a structure in which a display unit 52 is provided on a substrate 51, and an encapsulation substrate 53 is disposed on the display unit 52. In this panel 15, the display unit 52 may be an organic light emitting panel having an organic light emitting element, or a liquid crystal panel having a liquid crystal element. The liquid crystal panel can receive a light source by a backlight unit.

Referring to FIG. 6, the touch screen 17 may have a structure in which an insulator 75 is disposed between two substrates 71 and 73 having electrode patterns 72 and 74 formed thereon. Here, when the touch pressure is applied through the tempered glass 31, the insulator 75 is compressed and the interval between the electrode patterns 72 and 74 is changed, thereby detecting the change in capacitance, thereby performing the touch operation . The touch screen 17 may be one of an in-cell type integrated with a glass window, an on-cell type integrated with a cover glass, or an add-on type. It is not limited thereto. Also, although the method of the touch screen 17 has been described as an electrostatic method, it may be selected from a pressure sensing type, a resistive type, and a depressurized type. However, the present invention is not limited thereto.

7 is a detailed view of the tempered glass according to the first embodiment of the present invention.

7, the reinforcing glass 31 according to the first embodiment of the present invention includes an adhesive layer 32, a protective film 33, an adhesive film 34, a glass layer 35, a photocatalyst layer 36, . The adhesive layer 32 is a layer for attaching the touch screen panel 15 and the reinforcing glass 31. The material of the adhesive layer 32 includes a translucent double-sided adhesive tape and is made of, for example, silicone (Si) Lt; / RTI &gt; The adhesive layer 32 may be formed to a thickness ranging from 5 to 500 mu m, for example, a thickness ranging from 5 to 50 mu m.

The protective film 33 is adhered on the adhesive layer 32 and prevents fragments from being scattered when the glass layer 35 is broken due to an external impact. The protective film 33 may be a translucent film, for example, a plastic film such as PET (polyethylene terephthalate). As another example, the protective film 33 may be formed of a material such as polyethylene terephthalate (PET), polymide (PI), acrylic, polycarbonate (PC), triacetate cellulose (TAC), polymethyl methacrylate (PES), polyethylene naphthalate (PEN), or glass.

The thickness of the protective film 33 may be in the range of about 50 to 500 mu m, for example, in the range of 50 to 150 mu m. The thickness of the protective film 33 may be greater than the thickness of the adhesive layer 32 or the adhesive film 34.

The adhesive film 34 is formed by attaching a glass layer 35 on the protective film 33 and may help prevent scattering of the protective film 33. The adhesive film 34 may be an acrylic-based optical tape, for example, an OCA film, but is not limited thereto. The thickness of the adhesive film 34 may range from 5 to 500 mu m, for example, from 25 to 150 mu m. The adhesive layer 32 and the adhesive film 34 may be formed of different materials.

The glass layer 35 is adhered on the adhesive film 34 and is formed of reinforced glass to protect the touch screen panel from external impacts. The glass layer 35A includes a glass portion 35A and an anti-fingerprint layer 35B. The glass portion 35A is a substantial reinforcing glass layer. The glass portion 35A is made of ion- Potassium ion substitution) occurs most deeply. The glass portion 35A is treated so as not to be broken even by an external impact of a certain strength, and is resistant to scratches. The glass part 35A includes a glass material or a sapphire material, and the glass material optionally includes a material such as soda lime glass, pyrex material, and quartz material. The thickness of the glass portion 35A may be in a range of 200 to 600 mu m, for example, in a range of 250 to 550 mu m. The glass portion 35A may be formed to have a thickness of 50% or more, for example, 80% or more of the thickness of the tempered glass 31.

An anti-fingerprint layer 35B is disposed on the glass portion 35A, and the fingerprint blocking layer 35B is formed on the light outgoing side region to prevent fingerprints from being deposited on the glass portion 35A. The fingerprint blocking layer 35B may be formed of a material containing Si, Ti, Mg, Zn, Cd, Zr, In, Sn, V, W, Sr, Cr, Au, Ag, Al, Pd, Ru, Rh, Compounds, and may be selected from, for example, oxides, fluorides, and nitrides. For example, the print layer (35B) may be a metal oxide such as SiO _2, TiO _2, but the embodiment is not limited thereto. The thickness of the fingerprint blocking layer 35B may be in the range of 0.01 to 100 mu m, for example, in the range of 0.1 to 10 mu m. The fingerprint blocking layer 35B may be formed of a layer having functions such as AR (Anti Reflection), LR (Low Refection) and AG (Anti-Glare coating) in order to reduce the reflectance of external light. Here, the fingerprint blocking layer 35B may be removed from the glass layer 35, but the present invention is not limited thereto.

A photocatalyst layer (36) is formed on the glass layer (35). The photocatalyst layer 36 includes a photocatalyst and performs sterilization or deodorization when the light source is incident on the top surface of the tempered glass 31, that is, the light extraction side, for a predetermined time. Further, the photocatalyst layer 36 may be formed of a light-transmitting material, thereby improving light extraction efficiency. The photocatalyst layer 36 may be higher or lower than the refractive index of the tempered glass 31, and may have a refractive index ranging from 1.9 to 2.7, for example. The photocatalyst layer 36 may be made of a material containing a metal such as Si, Ti, Mg, Zn, Cd, Zr, In, Sn, V, W, Sr, Cr, Au, Ag, Al, Pd, A material, a mixture thereof, or a compound, and may be selected from, for example, an oxide, a fluoride, or a nitride having the metal. The photocatalyst layer 36 may be TiO ₂ , and other materials such as SrTiO ₃ , CdS, and ZnO may be used. The thickness of the photocatalyst layer 36 is in the range of 0.01 to 100 mu m, for example, in the range of 0.1 to 10 mu m.

The photocatalyst layer 36 may be formed to have a constant thickness, and the top surface, that is, the light exit surface may be formed as a flat horizontal surface. The photocatalyst layer 36 may be formed on the surface of the glass layer 35 by a vacuum film forming method such as sputtering or vapor deposition or a vacuum film forming method. The photocatalyst layer 36 may be doped with tin (Sn), zinc (Zn), molybdenum (Mo), or iron (Fe).

Referring to FIG. 8, the tempered glass 31 further includes an adhesive layer 37 between the glass layer 35 and the photocatalyst layer 36. The adhesive layer 37 adheres the photocatalyst layer 36 to the glass layer 35. The material of the adhesive layer 37 may be selected from compounds, mixtures, and oxides containing metal components such as C, ITO, Ni, Cr, Cu, Co, Fe, In, Sn, Zn, Pd and Ti. The thickness of the adhesive layer 37 may range from 1 to 500 angstroms, and the thickness of the adhesive layer 37 may preferably be 50 angstroms or less. The adhesive layer 37 may not be formed, but the present invention is not limited thereto. The adhesive layer 37 may be an OCA adhesive, but is not limited thereto.

9 is a view showing a tempered glass according to a second embodiment of the present invention. 9, the reinforcing glass 31A is provided with a photocatalytic layer 36 on a glass layer 35 or an adhesive layer 37. [ The photocatalyst layer 36 may be formed as an irregular surface on the upper surface E4, and the irregular surface may include irregularities to improve light extraction efficiency.

The lower surface E3 of the photocatalyst layer 36 may be a flat surface or an irregular surface, but is not limited thereto. The top surface E4 of the photocatalyst layer 36 may have a plurality of open regions as shown in FIG. 10, but the present invention is not limited thereto.

10 is a view showing a tempered glass of a third embodiment of the present invention. 10, the tempered glass 31B may include a patterned photocatalytic layer 38 having a plurality of open regions 38B, the photocatalytic layer 38 having a plurality of open regions 38B, And a line pattern 38A is arranged around the periphery. The width T3 of the line pattern 38A of the photocatalytic layer 38 includes a width of 1 mm or less such as 0.1 to 20 mu m and the period T1 of the open region 38B or the period of the line pattern is 1 To 100 [mu] m, and may include a constant period or an irregular period. The thickness T2 of the line pattern 38A ranges from 0.01 to 100 mu m, more preferably from 0.1 to 10 mu m, as the thickness of the photocatalyst layer 38. The line pattern 38A is formed in a line-shaped pattern in the open area 38B, and these lines can be connected to each other and formed into a predetermined pattern shape. The line pattern 38A can increase the surface area of the photocatalyst layer 38 and increase the area for the photocatalytic reaction.

The adhesive layer 37 disposed under the photocatalyst layer 38 may be formed in an area other than the open area 38B. That is, the glass layer 35 is exposed in the open region 38B, and the adhesive layer 37 is disposed between the line pattern 38A of the photocatalyst layer 38 and the glass layer 35. [ Here, the adhesive layer 37 is provided with an open region having a size corresponding to the plurality of open regions 38B.

When the light source is irradiated to the open region 38B or the surface of the photocatalytic layer 38 for a predetermined time, the photocatalytic reaction is performed by the photocatalytic reaction. The width of the open region 38B can be determined by the period T1 and the width T3 of the line pattern 38A and by adjusting the width of the open region 38B, You can give.

The side surface of each line pattern 38A in the photocatalyst layer 38 may be polygonal, hemispherical, horny, or horn-shaped, having a wide bottom surface and a narrow top surface, Do not.

The photocatalyst layer 38 may be formed by first forming a mask layer and then etching the region of the line pattern 38A or forming a photocatalyst layer, masking a line pattern, can do.

The open region 38B of the photocatalytic layer 38 is arranged between the polygonal line patterns 38A as shown in Fig. 11 and is formed by a hexagonal line pattern 38A and a hexagonal open region 38B And the glass layer 35 is exposed in the open region 38B. The hexagonal shape can have increased density and contact surface as compared with other shapes and can further increase the photocatalytic reaction.

As shown in FIG. 12, the open regions 38D of the photocatalytic layer 38 are arranged in an open structure between the curved line patterns 38C. The region 38E between the circular shape and the circular shape may be an open region or an open region, but the present invention is not limited thereto. The glass layer 35 is exposed in the open region 38D.

As shown in Fig. 13, the open regions 38G of the photocatalytic layer 38 are arranged in a structure open between the mesh-shaped line patterns 38F. In the open region 38G, the glass layer 35 is exposed.

11 to 13, the photocatalytic layer 38 is formed on the glass layer 35 in a pattern having an open region of a predetermined shape, whereby the light extraction efficiency can be improved. The pattern is distributed over the entire area of the glass layer 35, so that there is an effect that sterilization and deodorization can be performed on a region where the user is in contact or an area exposed to the outside.

14 is a view showing a tempered glass according to a fourth embodiment of the present invention. Referring to Fig. 14, the reinforcing glass 31C is provided with a photocatalyst layer 39 on a glass layer 35. Fig. The photocatalyst layer 39 may have a line pattern 39A having an open region 39B and the line pattern 39A may have an open region shape as shown in FIGS.

The side cross-sectional shape of the line pattern 39A may include a rectangular shape, for example, a rectangular shape or a square shape. As another example, the line pattern may have a triangular cross-sectional shape, but the present invention is not limited thereto.

The period T1, the width T3, and the thickness T2 of the line pattern 39A will be described with reference to the third embodiment.

The shape of the open area 39B by the line pattern 39A may be a triangle, a cone, a polygonal pyramid, a trapezoid, a quadrangle, or a pentagon, for example, a triangle or more. The side surface of the line pattern may be triangular, trapezoidal, quadrangular, pentagonal, conical, polygonal. In addition, the shape of the open area by the line pattern 39A may be an irregular shape, an irregular shape, or a shape having a different size, but is not limited thereto.

15 is a view showing a tempered glass of a fifth embodiment of the present invention. Referring to Fig. 15, a reinforcing glass 31D is provided with a photocatalyst layer 41 having a groove 41B on a glass layer 35 or an adhesive layer 37. Fig. The grooves 41B of the photocatalytic layer 41 may be arranged at regular intervals with a predetermined depth from the top surface of the photocatalytic layer 41. The grooves 41B may be formed in the same pattern as the line pattern shape described in any one of FIGS. . The depth T4 of the groove 41B of the photocatalytic layer 41 is formed to be not less than 1/2 of the thickness T2 of the photocatalytic layer 41 and less than the thickness T2 of the photocatalytic layer 41 . Accordingly, the adhesive layer 37 and the glass layer 35 are not exposed in the groove 41B of the photocatalyst layer 41.

The shape of the groove 41B may be a wide shape in the upper part and a narrow shape in the lower part, for example, a triangular shape. The other shape of the groove 41B may be a polygonal shape, for example, a rectangular shape, but is not limited thereto.

16 is a view showing a tempered glass of a sixth embodiment of the present invention. 16, a plurality of recessed portions 35D having a depth less than the thickness of the glass layer 35 are arranged from the upper surface of the glass layer 35, and the plurality of recessed portions 35D They may be spaced apart from each other, or may be connected in a line pattern shape as shown in FIGS.

The photocatalyst layer 43 may be filled in the concave portion 35D of the glass layer 35. An adhesive layer (not shown) may be further disposed between the photocatalyst layer 43 and the glass layer 35, but the present invention is not limited thereto. The upper surface of the photocatalytic layer 43 may be disposed on the same plane as the upper surface of the glass layer 35 or may protrude from the upper surface of the glass layer 35. The shape of the concave portion 35D may be a shape that widens toward the top, a hemispherical shape, or a polygonal shape. By disposing the photocatalyst layer 43 in the glass layer 35, the light extraction efficiency can be improved and the sterilization and deodorization can be effectively performed on the surface of the light emission side.

FIG. 17 is a view showing a tempered glass on a glass window according to a seventh embodiment of the present invention, and FIG. 18 is a detailed view of the tempered glass of FIG.

Referring to FIG. 17, a tempered glass 31 is formed on the glass window 21. The reinforcing glass 31 may be formed with a rounded surface R1 whose edges are chamfered. Here, the round surface R1 may be an edge portion that is in contact with the upper surface of the tempered glass 31, or it may be a corner edge portion on the lower surface.

18, the tempered glass 31 includes an adhesive layer 32, a protective film 33, an adhesive film 34, a glass layer 35, an adhesive layer 37, and a photocatalyst layer 36 . The glass layer 35 may be formed as a rounded surface R2 with a corner portion in contact with the upper surface. The photocatalyst layer 36 may be spaced apart from the rounded surface R2 of the glass layer 35. [ This is because the width D4 of the photocatalyst layer 36 may be narrower than the width D2 of the glass layer 35. Here, the photocatalyst layer 36 may be formed only in the display area A1 of FIG. 2, but the present invention is not limited thereto.

19 is a view showing a tempered glass according to an eighth embodiment of the present invention.

Referring to FIG. 19, a first protective sheet 41 and a second protective sheet 43 may be attached to the lower portion of the tempered glass 31. The first protective sheet 41 may be made of a transparent material and may be removed before the reinforcing glass is attached to the glass window 21. The reinforcing glass is attached to the glass window 21 It can be removed. The tempered glass 31 according to the present embodiment is separable / mountable and can be bent at a predetermined curvature at the time of separation.

20 is a graph comparing sterilization rates with time according to Comparative Examples and Examples.

In FIG. 20, a comparative example is a touch screen panel without a photocatalyst layer, and an embodiment is an example in which a tempered glass having a photocatalyst layer is attached to a touch screen panel. Here, the embodiment is a tempered glass 31 having a photocatalyst layer having a line pattern as shown in Fig. 10, the line pattern having a hexagonal open region, a period of 3 mu m, a thickness of 1 mu m, a line width of 5 mu m As shown in FIG. The material of the photocatalyst layer is TiO ₂ .

As shown in FIG. 20, the sterilization rates of the comparative examples and the comparative examples are almost unchanged over time, but the sterilization rates of the examples gradually increase with time.

FIG. 21 is a diagram comparing transmittances according to wavelengths according to Comparative Examples and Examples. FIG.

In FIG. 21, the comparative example is a touch screen panel without a photocatalyst layer, and the embodiment is an example in which a tempered glass 31 having a photocatalyst layer is attached to a touch screen panel. Here, the embodiment is a tempered glass 31 having a photocatalyst layer having a line pattern as shown in Fig. 10, the line pattern having a hexagonal open region, a period of 3 mu m, a thickness of 1 mu m, a line width of 5 mu m As shown in FIG. The material of the photocatalyst layer is TiO ₂ .

The transmittance of the comparative example and the comparative example shown in Fig. 21 are not lower than those of the comparative example. In particular, it can be seen that the transmittance is increased by 2% or more in the wavelength range of 400 nm to 450 nm as compared with the comparative example.

The display device of the present invention described above can be advantageously used for a mobile device such as a mobile phone because it is very advantageous for slimming down the device. Further, the present invention can be applied to a device capable of touch operation.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

11: display device 13: case
15: Panel 17: Touch screen
16, 18: Adhesive 20: Touch screen panel
21: Glass window 31, 31A, 31B, 31C, 31D, 31E: Tempered glass
32: adhesive layer 33: protective film
34: adhesive film 35: glass layer
35A: glass portion 35B, 37: adhesive layer
36, 38, 39, 41 and 43:

Claims (10)

An adhesive layer to be adhered onto the touch screen panel;
A protective film provided on the adhesive layer;
An adhesive film provided on the protective film;
A reinforced glass layer provided on the adhesive film; And
And a photocatalyst layer provided on the glass layer,
The photocatalyst layer is formed on the surface of the glass layer by a vacuum deposition method or a vacuum deposition method. The photocatalyst layer is formed on the surface of the glass layer by a vacuum deposition method or a vacuum deposition method. , At least one of an oxide, a fluoride, and a nitride having at least one metal component selected from Al, Pd, Ru, and Rh,
The glass layer is formed of a glass part made of a tempered glass and a glass part disposed on the glass part and being made of Si, Ti, Mg, Zn, Cd, Zr, In, Sn, V, W, Sr, Cr, Au, Ag, And an anti-fingerprint layer made of an oxide, a fluoride or a nitride,
Wherein the adhesive layer comprises a compound comprising C, ITO, Ni, Cr, Cu, Co, Fe, In, Sn, Zn, Pd or Ti between the glass layer and the photocatalyst layer.
The tempered glass according to claim 1, wherein the tempered glass comprises at least one selected from the group consisting of soda lime glass, pyrex material, quartz material, and sapphire material.
The tempered glass according to claim 1, wherein the upper surface of the photocatalytic layer is formed as an uneven surface.
The tempered glass according to claim 1, wherein the photocatalyst layer includes a pattern having a plurality of open regions, and an upper surface of the glass layer is exposed through the open region.
The tempered glass according to claim 1, wherein the width of the photocatalytic layer is less than or equal to the width of the glass layer, and at least one of the edges of the glass layer has a rounded surface.
The tempered glass according to claim 1, wherein the photocatalytic layer comprises a plurality of grooves formed on the top surface of the photocatalytic layer, the photocatalytic layer having a thickness of at least 1/2 of the thickness of the photocatalytic layer and less than the thickness of the photocatalytic layer.
The glass substrate according to claim 1, wherein the glass layer includes a plurality of recesses formed at a depth less than the thickness of the glass layer from the upper surface and connected to each other in a line pattern or in a mutually spaced relationship, A reinforcing glass.
delete A panel on which an image is implemented;
A touch screen provided on the panel;
A glass window provided on the touch screen; And
A touch screen panel attached to the glass window and comprising the tempered glass of any one of claims 1 to 7.
The touch screen panel of claim 9, wherein a polarizing film is further attached between the panel and the touch screen or between the touch screen and the glass window.

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