KR102161313B1 - Touch screen panel and method for manufacturing the same - Google Patents

Abstract

The present invention is a first substrate; A black matrix provided on the first substrate and provided to expose at least a portion of the first substrate; A polymer resin layer provided on the black matrix and covering the exposed first substrate; A decorative layer provided on the polymer resin layer and provided to correspond to the black matrix; A second substrate spaced apart from the decorative layer and provided to face the first substrate; And a UV-curable film interposed between the decorative layer and the second substrate, and to a touch screen panel and a manufacturing method thereof.

Description

Touch screen panel and its manufacturing method {TOUCH SCREEN PANEL AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a touch screen panel provided in an image display device and the like and a manufacturing method thereof.

The touch screen panel is an input device capable of inputting a user's command by selecting instructions displayed on a screen such as an image display device with a human hand or an object.

To this end, the touch screen panel is provided on the front face of the image display device and converts a contact position directly in contact with a person's hand or object into an electrical signal. Accordingly, the instruction content selected at the contact position is received as an input signal.

Since such a touch screen panel can replace a separate input device connected to an image display device such as a keyboard and a mouse, the range of use thereof is gradually expanding.

However, if the touch screen panel is attached to the top of the panel of the image display device, the overall volume of the display device becomes large, resulting in problems such as lowering the convenience of portability, and thus, the development of a thin touch screen panel has recently been required. .

In addition, in the case of a general touch screen panel, a window substrate is additionally provided on an upper surface of the touch screen panel to improve mechanical strength, and the window substrate is adhered to the upper surface of the touch screen panel using a transparent adhesive layer.

However, the additional provision of the window substrate and the adhesive layer as described above increases the thickness of the touch screen panel, which has a disadvantage in that it counteracts the trend of thinning the touch screen panel.

An object of the present invention is to provide a touch screen panel capable of easily attaching a substrate or the like using a novel adhesive material, and secure uniform thickness.

In addition, another object of the present invention is to provide a touch screen panel capable of reducing the total thickness of the touch screen panel by overcoming the step difference caused by the decorative layer.

According to an aspect of the present invention, embodiments of the present invention include a first substrate; A black matrix provided on the first substrate and provided to expose at least a portion of the first substrate; A polymer resin layer provided on the black matrix and covering the exposed first substrate; A decorative layer provided on the polymer resin layer and provided to correspond to the black matrix; A second substrate spaced apart from the decorative layer and provided to face the first substrate; And a touch screen panel including a UV curable film interposed between the decorative layer and the second substrate.

The first substrate is a flexible polymer resin layer made of one or more of polyethylene terephthalate (PET) resin, polyethylene sulfone (PES) resin, and polyethylene naphthalate (PEN) resin It may include.

The polymer resin layer may be made of at least one of polymethylmethacrylate (PMMA) resin and polycarbonate (PC) resin.

The decorative layer may protrude to have a step difference of 10 μm to 50 μm from the polymer resin layer.

The second substrate may include a transmissive area and an edge area provided outside the transmissive area, and the black matrix may be provided to correspond to the edge area.

The UV-curable film may be cured by UV to attach the second substrate to the polymer resin layer and the decorative layer.

The UV-curable film cured by UV may be in a solid state having a storage modulus of 10 ⁷ Pa or more at room temperature.

The UV curable film may have a storage modulus of 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing in a semisolid state.

The UV curable film may have a thickness of 5 μm to 100 μm.

According to another aspect of the present invention, embodiments of the present invention include preparing a first substrate with a decorative layer; A UV-curable film attaching step of providing a UV-curable film in a semisolid state at room temperature on the top of the decorative layer; A second substrate laminating step of providing a second substrate on the UV curable film; And a UV irradiation step of irradiating UV onto the second substrate to change the UV curable film into a solid state.

The decorative layer on the first substrate may protrude to have a step difference of 20 μm to 30 μm with respect to the polymer resin layer.

In the UV-curable film attaching step, the UV-curable film may be attached by a roll laminating process.

The UV curable film may have a thickness of 5 μm to 100 μm.

The UV curable film may have a storage modulus of about 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing.

Prior to the second substrate laminating step, the step of laminating a protective film on the UV-curable film may be further included.

After the protective film is laminated, the outer shape of the product can be processed by CNC or laser.

After processing the outer shape and peeling the laminated protective film, the second substrate may be provided.

In the second substrate laminating step, bubbles may be removed by leaving the second substrate laminated in an autoclave.

In the UV irradiation step, UV may be irradiated on the second substrate.

In the UV irradiation step, the UV-curable film may be cured by UV to change into a solid state having a storage modulus of 10 ⁷ Pa or more.

According to the present invention as described above, it is possible to provide a touch screen panel that can easily attach a substrate or the like using a novel adhesive material and secure uniformity in thickness.

In addition, according to the present invention, it is possible to provide a touch screen panel capable of reducing the overall thickness of the touch screen panel by overcoming the step difference caused by the decorative layer.

1 is a plan view schematically illustrating an example of a touch screen panel.
2 is an enlarged view showing an example of the sensing pattern shown in FIG. 1.
3 is a cross-sectional view showing a touch screen panel according to an embodiment of the present invention.
4 is a graph showing the storage modulus of a conventional UV-curable liquid adhesive and a film-type OCA and a UV-curable film according to an embodiment of the present invention.
5 is a flowchart illustrating a method of manufacturing a touch screen panel according to another embodiment of the present invention.
6A to 6F are cross-sectional views illustrating a method of manufacturing a touch screen panel according to another exemplary embodiment of the present invention.

Details of other embodiments are included in the detailed description and drawings.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. In addition, it also includes the case where it is electrically connected with another element in the middle. In addition, parts not related to the present invention in the drawings are omitted to clarify the description of the present invention, and like reference numerals are assigned to similar parts throughout the specification.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a plan view schematically illustrating an example of a touch screen panel, and FIG. 2 is an enlarged view illustrating an example of a sensing pattern illustrated in FIG. 1.

1 and 2, a touch screen panel according to an embodiment of the present invention includes a first substrate 10, a plurality of conductive sensing patterns 30 formed on the first substrate 10, It includes position detection lines 35 for connecting the sensing patterns 30 to an external driving circuit through the pad unit 50. The sensing patterns 30 are formed using a transparent electrode material such as indium-tin-oxide (ITO) in a touch active area on one surface of the transparent substrate 10, and first sensing cells 30a connected in a first direction. ) And second sensing cells 30b connected in a second direction.

The first sensing cells 30a are formed to be connected along a first direction, for example, a column line direction, and are connected to each of the position detection lines 35 in a column line unit. The second sensing cells 30b are formed to be connected in a second direction different from the first direction, for example, a row line direction, between the first sensing cells 30a so as to be insulated from the first sensing cells 30a. It is connected to each position detection line 35 in units of row lines. The first sensing cells 30a and the second sensing cells 30b may be formed on the same layer. In this case, the first connection lines 30a1 and the second connection are insulated from each other with an insulating layer interposed therebetween. The lines 30b1 may be connected in the first direction and the second direction, respectively, or may be positioned in different layers with an insulating layer interposed therebetween.

More specifically, referring to the embodiment shown in FIG. 2, the sensing patterns 30 include first sensing cells 30a connected in a first direction, and the first sensing cells 30a. First connection lines 30a1 connected in a first direction, second sensing cells 30b connected in a second direction, and a second sensing cell 30b connected in the first direction. It includes connecting lines 30b1. For convenience, only a part of the sensing pattern is illustrated in FIG. 2, but the touch screen panel has a structure in which the sensing patterns illustrated in FIG. 2 are repeatedly arranged.

The first sensing cells 30a and the second sensing cells 30b are alternately arranged so as not to overlap each other, and the first connection lines 30a1 and the second connection lines 30b1 cross each other. . In this case, an insulating layer (not shown) for securing stability is interposed between the first connection lines 30a1 and the second connection lines 30b1. Meanwhile, the first sensing cells 30a and the second sensing cells 30b are formed by using a transparent electrode material such as indium-tin-oxide (hereinafter, ITO), respectively, to the first connection lines 30a1 and the second It may be formed integrally with the connection lines 30b1, or may be formed separately from them to be electrically connected.

In addition, the position detection lines 35 are electrically connected to the first and second sensing cells 30a and 30b and the sensing patterns 30 in the column line unit and the row line unit through the pad unit 50. It is connected and connects it to an external driving circuit (not shown) such as a position detection circuit. These position detection lines 35 are disposed in the touch-inactive area outside the touch screen panel, avoiding the touch active area in which the image is displayed, and a transparent electrode used for forming the sensing cells 30 due to a wide selection of materials In addition to the material, it may be formed of a low-resistance material such as molybdenum (Mo), silver (Ag), titanium (Ti), copper (Cu), aluminum (Ti), and molybdenum/aluminum/molybdenum (Mo/Al/Mo).

The touch screen panel as described above is a capacitive touch screen panel, and when a contact object such as a human hand or a stylus pen comes into contact, the position detection lines 35 and the pad unit 50 are formed from the sensing patterns 30. ), the change in capacitance according to the contact position is transmitted to the driving circuit (not shown). Then, the change in capacitance is converted into an electric signal by an X and Y input processing circuit (not shown), and the contact position is determined.

In addition, a decoration layer (not shown) is formed on the edge area of the window substrate so as to correspond to a touch non-active area provided along the periphery of the touch active area. In this case, the decorative layer serves to prevent the position detection line formed under the touch inactive area from being visible, and may insert a logo or the like in one area of the decorative layer. On the other hand, such a decorative layer is formed by coating or printing on the edge area of the window substrate. In this case, a printing step of 10 μm or more occurs between the area where the decorative layer is formed and the transparent area corresponding to the touch active area. . Such a printing step increases the thickness of the transparent adhesive layer used when attaching the second substrate and also generates air bubbles, which may be a problem.

Accordingly, in the conventional case, the transparent adhesive layer is formed to be about 100 to 200 μm thick in order to overcome this problem, but this has a disadvantage in that it goes against the thinning trend of the touch screen panel. For example, when the transparent adhesive layer is in a liquid state, it is difficult to control the amount of supply, so that the transparent adhesive layer flows down, thereby reducing process efficiency. In addition, in the case where the transparent adhesive layer is in the form of a film, air bubbles generated by the step of the decorative layer are not removed and remain, which may cause a problem in reliability.

The embodiment of the present invention is to overcome the above drawbacks, and by using a UV-curable film made of a novel material instead of a commonly used transparent adhesive layer, the thickness of the touch screen panel can be thinned. In addition, since the UV-curable film can be provided with a uniform thickness at a predetermined position during the attachment process, a thin-film touch screen panel having uniform thickness can be easily implemented. In addition, the UV curable film can reduce the thickness of the touch screen panel by overcoming the limitation of the step difference due to the decorative layer.

A detailed configuration of the embodiment of the present invention will be described in more detail with reference to FIGS. 3 and 4 below.

3 is a cross-sectional view showing a touch screen panel according to an embodiment of the present invention.

The touch screen panel according to an embodiment of the present invention includes a first substrate 10 and a black matrix 20 provided on the first substrate 10 to expose at least a portion of the first substrate 10 , A polymer resin layer 40 provided on the black matrix 20 and covering the exposed first substrate 10, provided on the polymer resin layer 40, and provided to correspond to the black matrix 20 A second substrate 70 spaced apart from the decorative layer 50 to face the first substrate 10, and between the decorative layer 50 and the second substrate 70 It may include a UV curable film 60 interposed in the.

The touch screen panel may include a black matrix 20, a polymer resin layer 40, a decorative layer 50, and a UV-curable film 60 provided between the first substrate 10 and the second substrate 70. In addition, a plurality of conductive sensing patterns 30 may be formed on a surface of the first substrate 10 opposite to a surface on which the black matrix 20 is provided.

The second substrate 70 of the touch screen panel may include a transmissive area 101 through which light or the like passes, and an edge area 102 provided outside the transmissive area 101. The second substrate 70 is attached to the outermost surface to improve the mechanical strength of the touch screen panel, and may be formed using a transparent substrate substrate such as glass, polyethylene terephthalate (PET), or acrylic. Here, the term “transparent” means not only 100% transparency, but also transparency to the extent that it has a high light transmittance.

In addition, the first substrate 10 includes a touch active region 101 ′ corresponding to the transmissive region 101, and is provided outside the touch active region 101 ′ to correspond to the edge region 102. It may be made of a touch inactive area 102'. The sensing patterns 30 are provided in the touch active region 101 ′, and position detection lines (not shown) electrically connected to the genital sensing patterns 30 are provided in the touch non-active region 102 ′. It can be provided.

The first substrate 10 is a flexible material made of one or more of polyethylene terephthalate (PET) resin, polyethylene sulfone (PES) resin, and polyethylene naphthalate (PEN) resin. It may include a polymer resin layer.

The black matrix 50 may be provided on the first substrate 10 and may be provided to correspond to the edge region 102 and the touch inactive region 102 ′. The black matrix 50 may prevent a position detection line formed under the touch inactive region 102 ′ from being visible, and may form a black border on the touch screen panel.

The polymer resin layer 20 may be provided on the black matrix 50 and may be provided to cover the exposed first substrate 10. The polymer resin layer may use a resin that can be cured by UV, and after curing, transparency is secured, and any material applicable to a display device may be used. For example, the polymer resin layer 20 may be made of at least one of polymethylmethacrylate (PMMA) resin and polycarbonate (PC) resin. The polymer resin layer 40 may be manufactured through injection molding by discharging the polymer resin to a mold.

A decorative layer 50 may be provided on the polymer resin layer 40, and the decorative layer 50 may be provided in a touch inactive region 102 ′ and provided at a position corresponding to the black matrix 20. have. The decorative layer 50 together with the black matrix 20 can prevent visualization of the lower part of the decorative layer 50, and the decorative layer 50 is implemented in various colors to improve the aesthetics of the touch screen panel. I can make it.

The decorative layer 50 may protrude to have a step difference of 10 μm to 50 μm from the polymer resin layer. The decorative layer 50 may be provided by a printing method similar to the black matrix 20. In the case of the black matrix 20, for example, it is possible by printing twice, while in the case of a color such as white or pink, it is provided by printing up to 10 times. That is, the decorative layer 50 may be implemented by printing approximately two or more times. In the case of one printing, approximately 5 μm is stacked, so the decorative layer 50 may be provided with a step of 10 μm to 50 μm. I can.

As described above, when the first substrate 10 to the decorative layer 50 is referred to as the base portion S, the second substrate 70 may be provided on the base portion S. A UV-curable film 60 may be provided on the top of the decorative layer 50 of the base portion S. The UV-curable film 60 is cured by UV so that the second substrate 70 It can be attached on the stratum 40 and the decorative layer 50. The UV curable film 60 may have a thickness of 5 μm to 100 μm. Preferably, the UV curable film 60 may have a thickness of approximately 50 μm. When the thickness of the UV-curable film 60 is less than 5 μm, the adhesive strength is weak, and the filling of the printing step by the decorative layer 50 may be problematic. In addition, the UV curable film 60 has a thickness of 100 μm and can solve the problem of adhesion and printing steps. When the UV curable film 60 is provided with a thickness of 100 μm, unnecessary material costs are increased. Also, the effect of reducing the thickness is insufficient.

In general, in order to attach the second substrate, a method such as attaching using a UV-curable adhesive or attaching using a film-type OCA (Optically Clear Adhesive) is used. On the other hand, since the liquid adhesive is supplied in a certain liquid state, it is difficult to control the thickness and cause problems such as flowing down to the outside of the substrate. In addition, since the liquid adhesive is first cured using UV and then attached to the second substrate, it is difficult to secure sufficient adhesion. In the case of the film-type OCA, there is a problem that a large amount of air bubbles are generated in a solid state, or that the film-type OCA needs a thickness of 150 µm or more in order to overcome the printing step of 20 µm to 30 µm.

The touch screen panel according to the present invention attaches a second substrate on the base portion using a novel material, a UV curable film, and the UV curable film is provided in a semi-solid state before performing UV curing. It can overcome the printing step caused by. In addition, since it is in a semi-solid state, the attachment process is easy, and since it is provided as a thin film, the thickness of the touch screen panel can be uniform and reduced at the same time. In addition, since the thin UV curable film is cured using UV after the second substrate is provided, sufficient adhesion can be secured.

4 is a graph showing the storage modulus of a conventional UV-curable liquid adhesive and a film-type OCA and a UV-curable film according to an embodiment of the present invention.

In FIG. 4, storage modulus according to UV irradiation at room temperature using a UV curable liquid adhesive (a), a film-type OCA (b), and a UV curable film (c) according to an embodiment of the present invention. It is a measured value of (storage modulus). The storage modulus is measured by changing the temperature in rotational shear mode using a parallel plate using ARES. It was confirmed that the UV-curable liquid adhesive (a) exists in a liquid state and causes a phase change to a solid state by UV irradiation. In addition, it was confirmed that the film-type OCA(b) remained in a semi-solid state regardless of UV irradiation. On the other hand, the UV curable film (c) according to the present embodiment is in a semisolid state with a storage modulus of 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing, and has a property similar to that of the film-type OCA (b). I could confirm. It was confirmed that the UV-curable film (c) had a storage elastic modulus at room temperature of 10 ⁶ Pa or more after being cured by UV, and the storage elastic modulus increased compared to the film-type OCA (b).

For example, in order to overcome the thickness of the printing step of about 30㎛, OCA in the form of a film needs a thickness of 150㎛ or more, or if a UV-curable liquid adhesive is used, it is semi-cured to reduce adhesion and then laminate the second substrate. Therefore, it is difficult to secure sufficient adhesion.

On the other hand, in the case of a UV curable film, it is easy to attach because it exists in a semi-solid state, and it is possible to increase the storage modulus by UV curing after laminating the second substrate, so it is difficult to overcome the printing step by the decorative layer. Thinning can be implemented. In addition, unlike the UV-curable liquid adhesive, since the second substrate can be cured after attachment, sufficient adhesion can be secured during attachment and strength after attachment can be improved.

In addition, it is preferable that the UV-curable film according to an embodiment of the present invention has a storage modulus of 10 ⁷ Pa or more after being cured by UV. As shown in FIG. 4, the UV-curable film according to an embodiment of the present invention is in a solid state at a storage modulus of 10 ⁶ Pa or more at room temperature. On the other hand, it is preferable that the UV-curable film is provided with a storage modulus of 10 ⁷ Pa or more in order to secure a process margin and prevent reliability from being lowered due to the presence of uncured portions.

The UV curable film may include an acrylic copolymer synthesized from a composition comprising a solution polymerizable acrylic compound and a reaction initiator and an ultraviolet curable compound. The solution polymerizable acrylic compound may include, for example, butyl acrylate, ethyl acrylate, and acrylic acid, for example, about 30% by weight to about 60% by weight of butyl acrylate, ethylacrylic based on the total content of the solution polymerizable acrylic compound. The rate may be included in an amount of about 30% to about 60% by weight and about 0.1% to about 40% by weight of acrylic acid.

The reaction initiator may be, for example, a thermal initiator, and the thermal initiator may be decomposed by heat to form a radical and initiate a synthetic reaction by the radical. The thermal initiator may be, for example, benzoyl peroxide, acetyl peroxide, diauryl peroxide, hydrogen peroxide, potassium persulfonate, 2,2'-azobisisobutyronitrile (AIBN), or a combination thereof. , But is not limited thereto. The reaction initiator may be included in an amount of about 0.1 parts by weight to about 15 parts by weight based on 100 parts by weight of the solution-polymerizable acrylic compound. The acrylic copolymer may have, for example, a weight average molecular weight of about 200,000 to about 1,500,000, but is not limited thereto.

The ultraviolet curable compound may include, for example, trimethylolpropane triacrylate, urethane acrylate, and 1,6-hexadiol diacrylate, for example, trimethylolpropane triacrylate based on the total content of the ultraviolet curable compound. From about 5% to about 50% by weight, about 5% to about 50% by weight of urethane acrylate, and from about 5% to about 50% by weight of 1,6-hexadiol diacrylate.

The acrylic copolymer and the ultraviolet curable compound may be included in a weight ratio of about 70:30 to about 95.5:0.5. By being included in the above range, it is possible to efficiently perform curing by ultraviolet rays while securing adhesiveness. The UV curable film may further include a photo initiator. The photoinitiator may be decomposed by light to form a radical, and a reaction may be initiated by the radical. The photoinitiator may be, for example, an acetophenone-based compound. The photoinitiator may be included in an amount of about 0.1 to about 5 parts by weight based on 100 parts by weight of the ultraviolet curable compound.

Hereinafter, a method of manufacturing a touch screen panel using a UV curable film will be described with reference to FIGS. 5 to 6F.

5 is a flowchart illustrating a method of manufacturing a touch screen panel according to another exemplary embodiment of the present invention, and FIGS. 6A to 6F are cross-sectional views illustrating a method of manufacturing a touch screen panel according to another exemplary embodiment of the present invention.

Referring to FIG. 5, a method of manufacturing a touch screen panel according to another aspect of the present invention includes preparing a first substrate with a decorative layer, and a UV-curable type in a semisolid state at room temperature on an upper portion of the decorative layer. UV-curable film attaching step (S100) having a film, a second substrate laminating step (S200) having a second substrate provided on the UV-curable film, and UV irradiation on the second substrate to solidify the UV-curable film It may include a UV irradiation step (S300) to change the state.

The decorative layer 50 on the first substrate 10 may protrude to have a step difference of 20 μm to 30 μm with respect to the polymer resin layer 40. After the black matrix 20 and the polymer resin layer 40 are provided on the first substrate 10, the decorative layer 50 may be provided at a position corresponding to the black matrix 20. In this case, the decorative layer 50 may be provided in a coating or printing method. In addition, a plurality of conductive sensing patterns 30 may be provided on a surface of the first substrate 10 opposite to a surface on which the black matrix 20 is provided. The polymer resin layer 40 may be manufactured by injection molding by discharging the polymer resin to a mold.

As shown in FIG. 6A, in the UV-curable film attaching step (S100), the UV-curable film 60 may be attached on the first substrate 10 provided with the decorative layer 50. When the state in which the decorative layer 50 is provided on the first substrate 10 is referred to as the base portion S, the UV-curable film is formed on the base portion S by a roll laminating process using a roll 81 ( 60) can be attached. At this time, the roll laminating process may be performed at a pressure of approximately 50Mpa.

The UV curable film may have a thickness of 5 μm to 100 μm, and the UV curable film may have a storage modulus of about 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing. The UV-curable film 60 according to the present embodiment is provided in a semi-solid state at room temperature to have a solid property and a predetermined fluidity. Therefore, the UV curable film 60 can be easily attached to the base portion S and secure a uniform thickness. In addition, the predetermined fluidity of the UV curable film 60 can be easily attached without being limited by the printing step 62 of the decorative layer 60 during the roll lamination process. .

As shown in FIGS. 6B to 6C, the method of manufacturing a touch screen panel according to the present invention may further include a process of processing an outer shape into a shape of a target product. The process of processing as described above may be performed after the UV-curable film attaching step (S100). In order to process the outer surface of the touch screen panel, the upper portion of the UV-curable film 60 before the second substrate laminating step (S200). It may further include the step of laminating the protective film 82 on. After the protective film 82 is laminated, the outer shape of the product may be processed by CNC or laser. After the outer shape is processed and the laminated protective film 82 is peeled off, the second substrate 60 may be provided.

6D and 6E, in the second substrate laminating step (S200), air bubbles are removed by leaving the second substrate 70 laminated on the base portion S in an autoclave 84. can do. In the second substrate lamination step (S200), air bubbles that may be generated due to the printing step of the decorative layer 60 may be prevented, and adhesion between the UV-curable film 60 and the base part S may be improved. .

Referring to FIG. 6F, in the UV irradiation step (S300 ), UV may be irradiated on the second substrate 70. That is, after attaching the second substrate 70 on the UV-curable film 60, UV is irradiated from the top of the second substrate 70 afterwards, so that the adhesion and fluidity of the UV-curable film 60 are sufficiently secured. At the same time, it is possible to increase the reliability by improving the strength of the touch screen panel. At this time, in the UV irradiation step (S300), the UV-curable film 60 may be cured by UV and converted into a solid state having a storage modulus of 10 ⁷ Pa or more. The UV can be irradiated with an irradiation intensity of 2000J/cm2 using a UV lamp in the 365nm wavelength band.

Those of ordinary skill in the art to which the present invention pertains will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the scope of the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. It must be interpreted.

10: first substrate 20: black matrix
30: detection patterns 35: position detection line
40: polymer resin layer 50: decorative layer
60: UV curable film 70: second substrate
101: transmission area 102: frame area
101': touch active area 102': touch inactive area

Claims (20)

A first substrate including a touch active area and a touch non-active area surrounding at least a portion of the touch active area;
A black matrix provided on the first substrate and provided to expose at least a portion of the first substrate;
A polymer resin layer provided on the black matrix, covering the exposed first substrate, and cured by UV;
A decorative layer provided on the polymer resin layer and provided to correspond to the black matrix;
A UV curable film provided on the decorative layer and covering the polymer resin layer exposed to correspond to the touch active area of the first substrate; And
A touch screen panel comprising a second substrate provided on the UV curable film. The method of claim 1,
The first substrate is a flexible polymer resin layer made of at least one of polyethylene terephthalate (PET) resin, polyethylene sulfone (PES) resin, and polyethylene naphthalate (PEN) resin Touch screen panel comprising a. The method of claim 1,
The polymer resin layer is a touch screen panel made of at least one of polymethylmethacrylate (PMMA) resin and polycarbonate (PC) resin. The method of claim 1,
The decorative layer is a touch screen panel protruding to have a step difference of 10 μm to 50 μm from the polymer resin layer. The method of claim 1,
The second substrate includes a transmissive area and an edge area provided outside the transmissive area, and the black matrix is provided to correspond to the edge area. The method of claim 1,
The UV curable film is cured by UV to attach the second substrate to the polymer resin layer and the decorative layer on the touch screen panel. The method of claim 6,
The UV-curable film cured by UV is a touch screen panel in a solid state having a storage modulus of 10 ⁷ Pa or more at room temperature. The method of claim 6,
The UV-curable film is a touch screen panel including a semisolid state having a storage modulus of 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing. The method of claim 1,
The UV curable film is a touch screen panel having a thickness of 5 μm to 100 μm. Preparing a first substrate provided with a decorative layer on a polymer resin layer cured by UV;
A UV-curable film attaching step of providing a UV-curable film in a semisolid state at room temperature on the top of the decorative layer;
A second substrate laminating step of providing a second substrate on the UV curable film;
A method of manufacturing a touch screen panel comprising: a UV irradiation step of irradiating UV onto the second substrate to cure the UV-curable film and the polymer resin layer. The method of claim 10,
A method of manufacturing a touch screen panel in which the decorative layer on the first substrate protrudes to have a step difference of 20 μm to 30 μm with respect to the polymer resin layer. The method of claim 10,
In the step of attaching the UV-curable film, the UV-curable film is attached by a roll laminating process. The method of claim 10,
The UV curable film has a thickness of 5㎛ to 100㎛ touch screen panel manufacturing method. The method of claim 10,
The UV curable film has a storage modulus of 10 ³ Pa to 10 ⁶ Pa at room temperature before UV curing. The method of claim 10,
The method of manufacturing a touch screen panel further comprising laminating a protective film on the UV curable film before the second substrate laminating step. The method of claim 15,
A method for manufacturing a touch screen panel in which the outer shape of a product is processed by CNC or laser after the protective film is laminated. The method of claim 16,
After the outer shape is processed, the laminated protective film is peeled off, and the second substrate is provided. The method of claim 10,
In the step of laminating the second substrate, a method of manufacturing a touch screen panel in which air bubbles are removed by leaving the second substrate in an autoclave in a laminated state. The method of claim 10,
In the UV irradiation step, UV is irradiated from an upper portion of the second substrate. The method of claim 10,
In the UV irradiation step, the UV-curable film is cured by UV and phase-changed to a solid state having a storage modulus of 10 ⁷ Pa or more.

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