KR102142144B1 - Window film combined with polarization plate and touch sensing electrode - Google Patents

Abstract

The present invention relates to a window film integrated with a polarizing plate and a touch sensing electrode, and more specifically, a polarizing plate capable of realizing a thin film structure by bonding a touch sensing electrode having a polarizing plate and a retardation layer laminated on one surface thereof to one surface of a window film. And a touch sensitive electrode integrated window film.

Description

WINDOW FILM COMBINED WITH POLARIZATION PLATE AND TOUCH SENSING ELECTRODE

The present invention relates to a window film integrated with a polarizing plate and a touch sensing electrode. More specifically, the present invention relates to a polarizing plate applicable to a flexible display and a window film integrated with a touch sensing electrode.

With the recent development of semiconductor technology, which is rapidly developing, the demand for display devices having improved performance while miniaturizing and reducing weight is increasing explosively.

BACKGROUND Electronic displays for visually transmitting information have appeared in various forms according to the trend of informatization, and recently, with the development of portable communication, the development of displays that require portability has emerged strongly.

The display device has been changed from a CRT method to a liquid crystal display (LCD), a plasma display panel (PDP), or an organic electroluminescence display (OLED). In particular, the liquid crystal display (liquid crystal display, LCD) has the advantage of lower power consumption, smaller size and lighter weight than conventional CRT, and does not emit harmful electromagnetic waves. For this reason, it has been attracting attention as a next-generation high-tech display, and is currently installed and used in almost all information processing devices that require a display device.

Recently, research on a flexible display that is thinner, lighter, and bendable than a conventional panel using a polymer film instead of a glass substrate is actively underway.

The flexible display can be produced in the form of a plastic film LCD, organic EL, wearable display, e-book, electronic paper, etc., and the range of application is also very wide, such as displays for mobile communication terminals, displays for portable information and communication devices. In addition to the thin and light conditions, it is resistant to external shocks, and can be applied to products requiring a curved or variously shaped display.

Meanwhile, in recent years, the use of a touch screen in which a display panel and a touch sensing electrode are further combined has been gradually popularized, and the implementation of a thin film structure has become an increasingly important concern.

However, the flexible liquid crystal display currently used only replaces the substrate material from the existing glass substrate to the polymer film substrate, and the peripheral materials and components necessary for display implementation such as polarizers and backlights still use the method applied to the glass substrate. have.

For example, the conventional liquid crystal display has a disadvantage in that the thickness of the polarizing plate is 200 to 400 μm, and the single thickness of the protective layer used for the protection of the polarizer is 25 to 100 μm. Therefore, it is difficult to apply to structures such as thin cards.

In order to solve this problem, Korean Patent Publication No. 2008-0073252 discloses a technology that achieves a thin structure by removing a protective film that comes into contact with a liquid crystal cell among polarizing plates bonded to a liquid crystal cell.

Patent Document 1: Korean Patent Publication 2008-0073252

An object of the present invention is to provide a window forming an outermost surface of a touch screen panel or an image display device, which is integrated with a polarizing plate and a touch sensing electrode.

Another object of the present invention is to provide a window in which a composite polarizing plate having a retardation layer directly bonded to a polarizer and a touch sensing electrode are integrated.

In addition, another object of the present invention is to provide an integrated window having flexibility.

1. A polarizing plate and a touch sensing electrode-integrated window film in which a touch sensing electrode having a polarizing plate and a retardation layer laminated on one surface thereof is bonded to one surface of a window film.

2. In the above 1, wherein the polarizing plate is a single layer of a polarizer or a laminate in which a transparent protective film is bonded to one surface of the polarizer, the polarizing plate and the touch sensing electrode integrated window film.

3. In the above 2, wherein the polarizer is a coating layer, a polarizing plate and a touch sensing electrode integrated window film.

4. In the above 2, the retardation layer is a polarizer or a layer coated on a transparent protective film of the polarizer, the polarizing plate and the touch sensing electrode integrated window film.

5. In the above 1, a polarizing plate, a retardation layer and a touch sensing electrode are sequentially stacked on a window film, and the polarizing plate and the touch-sensing electrode integrated window are formed by bonding the polarizing plate to the window film separately. film.

6. In the above 1, a polarizing plate, a retardation layer and a touch sensing electrode are sequentially stacked on the window film, and the bonding of the polarizing plate to the window film is made of a coating of a polarizer, and the polarizing plate and the touch sensing electrode integrated window film .

7. In the above 1, a touch sensing electrode, a polarizing plate, and a retardation layer are sequentially stacked on the window film, and the polarizing plate and the touch sensing electrode are integrally formed by bonding the polarizing plate to the touch sensing electrode. Window film.

8. In the above 1, a touch sensing electrode, a polarizing plate, and a retardation layer are sequentially stacked on the window film, and the bonding of the polarizing plate to the touch sensing electrode is made of a coating of a polarizer, and the polarizing plate and the touch sensing electrode integrated window film.

9. In the above 1, wherein the retardation layer is a quarter wave plate, a polarizing plate and a touch sensing electrode integrated window film.

10. The method of 1 above, wherein the window film is flexible, a polarizing plate and a touch sensing electrode-integrated window film.

11. In the above 1, the total thickness is 100 to 200㎛, a polarizing plate and a touch sensing electrode integrated window film.

12. A touch screen panel comprising the window film of any one of the above 1 to 11 as the outermost window substrate.

13. The touch screen panel of 12 above, which is bonded to the flexible display.

The polarizing plate and the touch-sensing electrode-integrated window film of the present invention can achieve a thin film structure by integrating the window film and the polarizing plate.

In addition, the polarizing plate and the touch-sensing electrode-integrated window film of the present invention can be formed of a single coating layer of a polarizer, thereby achieving a thin film structure.

In addition, since the polarizing plate and the touch-sensing electrode-integrated window film of the present invention may have a structure in which a retardation layer is directly coated on a polarizer, a thin film structure can be achieved.

In addition, the polarizing plate and the touch-sensing electrode-integrated window film of the present invention use a flexible window film and have a thin film structure as described above, and thus can be usefully applied to a flexible display in addition to a general display.

1 is a schematic vertical cross-sectional view of a window film integrated with a polarizing plate and a touch sensing electrode according to an embodiment of the present invention.
2 is a schematic vertical cross-sectional view of a polarizing plate and a touch sensing electrode-integrated window film in which a polarizing plate and a retardation layer are bonded as a bonding layer according to another embodiment of the present invention.
3 is a schematic vertical cross-sectional view of a window film integrated with a polarizing plate and a touch sensing electrode, including a retardation layer formed on a transparent protective film of a polarizing plate according to another embodiment of the present invention.
4 is a schematic vertical cross-sectional view of a polarizing plate and a touch sensing electrode-integrated window film having a retardation layer formed on a polarizer of a polarizing plate including a transparent protective film according to another embodiment of the present invention.
5 is a schematic vertical cross-sectional view of a window film integrated with a polarizing plate and a touch sensing electrode, in which a touch sensing electrode is directly formed on a window film according to another embodiment of the present invention.

The present invention relates to a window film integrated with a polarizing plate and a touch-sensing electrode capable of realizing a thin film structure by bonding a touch-sensing electrode having a polarizing plate and a retardation layer laminated on one surface thereof to one surface of a window film.

Hereinafter, the present invention will be described in more detail with reference to the drawings. However, the following drawings attached to this specification are intended to illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the contents of the present invention, the present invention is described in such drawings It should not be interpreted as being limited to the matter.

1 schematically illustrates an embodiment of a window film integrated with a polarizing plate and a touch sensing electrode of the present invention. The polarizing plate and the touch sensing electrode-integrated window film of the present invention include a window film 100, a polarizing plate 200, a retardation layer 300, and a touch sensing electrode 500.

The window film 100 may be used without particular limitation as long as it is a window substrate constituting the outermost surface of the touch screen panel or the image display device, and preferably, a flexible substrate may be used.

Concrete examples of the window film 100 include glass, polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), and polyethyelenen napthalate (PEN) , Polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate, cellulose triacetate (TAC), Cellulose acetate propionate (CAP) may be used, and in the case of glass, it is preferable to use tempered glass.

The strengthening treatment of the glass may be performed through etching strengthening, thermal strengthening, chemical strengthening, and the like. Etch strengthening is a method of strengthening by giving a small bend to the glass surface, and heat strengthening is a method of solidifying the glass surface than the inside to increase the compressive strength, and rapidly heating the surface temperature of the glass to 720~750℃ to increase the surface fluidity. This is a method of strengthening by rapidly cooling by spraying cold refrigerant afterwards. Chemical strengthening is a method of strengthening by replacing small ions (Na ions) on the glass surface with large ions (K ions) to generate compressive stress on the surface.

The flexible window film may be applied in the case of the polymer substrate among the above-described examples, and in the case of the glass material, it can be applied in the case of the flexible glass material. When the window film of the present invention is applied to a flexible display, it is preferable to use a flexible window film.

The polarizing plate 200 is bonded on the window film 100 to have an integral structure with the window film 100.

The polarizing plate 200 may be a single layer of the polarizer 210 or a laminate in which the transparent protective film 220 is bonded to one surface of the polarizer 210.

When the polarizing plate 200 is formed of a single layer of the polarizer 210, a polymer solution containing a polymer resin and a dichroic material may be directly coated on the window film 100 to form a coating layer.

As a polymer resin for forming the coating layer of the polarizer 210, a polyvinyl alcohol-based resin is typically used. The polyvinyl alcohol-based resin may preferably be a polyvinyl alcohol-based resin obtained by saponifying a polyvinyl acetate-based resin. Examples of the polyvinyl acetate-based resin include polyvinyl acetate, which is a homopolymer of vinyl acetate, and copolymers of vinyl acetate and other monomers copolymerizable therewith. Other monomers copolymerizable with vinyl acetate include unsaturated carboxylic acid-based, unsaturated sulfonic acid-based, olefin-based, vinyl ether-based, and acrylamide-based monomers having ammonium groups.

In addition, the polyvinyl alcohol-based resin may be modified, for example, polyvinyl formal or polyvinyl acetal modified with aldehydes.

The polarizer layer 210 may be formed by mixing a dichroic material with the polyvinyl alcohol-based resin and forming a film.

In another aspect of the present invention, the polarizer 210 coating layer may be formed of a crystalline film polarizer layer.

The crystal film polarizer has a special molecular crystal structure formed as a result of crystallization of a liquid crystal phase when liquid crystal is applied, aligned and dried on the transparent substrate. The liquid crystal phase includes at least one organic material capable of forming a stable concentration transfer type or a thermotropic liquid crystal phase. The organic material includes at least one organic compound, the chemical formula of which is (i) at least one ionogenic group that ensures solubility in polar solvents to obtain a concentration transitional liquid crystal phase, and And/or (ii) at least one nonionogenic group that ensures solubility in a non-polar solvent to obtain a concentration-transfer liquid crystal phase, and/or (iii) is or may not be contained in the molecular structure after film formation. And at least one counterion that may or may not be included.

The optically anisotropic dichroic crystal film contains a large number of supramolecular complexes of one or several organic compounds. These supramolecular complexes are deflected in a specific way to provide polarization and electrical conductivity of the transmitted light.

The membrane is composed of rod-like supramolecules, and the supramolecules contain at least one disc-shaped polycyclic organic compound having a conjugated π-system. The film has an orderly crystal structure as a whole with an intermolecular spacing of 3.4±0.3 mm along its polarization axis.

The base material of the optically anisotropic dichroic crystal film is selected based on the presence of groups such as amines, phenols, ketones and the like, which are connected to the pair-bonding system and placed in the molecular plane, and the presence of the unpaired π pair-bonding system of the pair aromatic ring group. Molecules and/or molecular fragments have a flat structure. Examples of base materials are indanthrone (Vat blue 4), 1,4,5,8-perylenetetracarboxylic acid dibenzoimidazole (Vat Red 14), 3,4,9,10-perylenetetracarboxyl Acid dibenzoimidazole, quinacridone (Pigment Violet 19) and the like, and derivatives thereof (or mixtures thereof) can form stable concentration-transfer liquid crystal phases.

In the optically anisotropic dichroic crystal film, the molecular planes are next to each other, and the molecules form a three-dimensional crystal structure at least in the crystal film portion. By optimizing the manufacturing technology, an optically anisotropic dichroic single crystal film can be formed. The optical axis in this single crystal is perpendicular to the molecular plane. This thin crystal film has a high degree of anisotropy and exhibits a high refractive index and/or a high absorption coefficient in at least one direction.

The phase difference layer 300 is bonded to the opposite side of the surface of the polarizing plate 200 where the window film 100 is bonded. The retardation layer 300 is bonded to the polarizing plate 200 to form a composite polarizing plate, and in order to maximize the effect of the composite and thin film structure, the retardation layer 300 is preferably directly bonded to the polarizer 210.

The phase difference layer 300 functions to change the phase of transmitted light. For example, it may be an optical compensation layer for expanding the viewing angle or a quarter-wave plate for preventing reflection. When the polarizing plate and the touch-sensing electrode-integrated window film of the present invention are used in a flexible display, it is preferable that it is a quarter wave plate.

The retardation layer 300 may be a single coating layer or a liquid crystal layer formed on an alignment layer, and a coating layer is preferable for realizing a thin film structure.

The touch sensing electrode 500 is an electrode that senses a position of a touched part. In order to detect the touch position on the flat surface of the touch screen, two types of electrodes are required: an electrode that detects the x-coordinate of the touched position and an electrode that detects the y-coordinate, so the touch-sensing electrode 500 includes two types of electrodes. .

Depending on the arrangement of the electrodes, a touch sensing electrode 500 having various structures may be manufactured, and various structures are also used in the art. For example, GFF (Glass-ITO film-ITO film), GF2 (Glass-ITO film-ITO), G1F (Glass-ITO film), G2 (Glass only) structure and the like are not limited thereto. .

GFF is the most common structure, and consists of two films of transparent electrodes (ITO) required to implement the X and Y axes, and GF2 forms the electrodes for the X axis on one side of one film and the electrodes for the Y axis on the other side. Is to form. G1F deposits a thin film of ITO on the back of the glass, and the second ITO uses a film as in the conventional method. G2 is a method of forming a thin film by depositing and patterning ITO for the X-axis on the back side using one piece of tempered glass, and then patterning the ITO for the Y-axis even after forming an insulating layer thereon.

In the present invention, the structure of the touch sensing electrode 500 is not particularly limited, but a GFF or GF2 structure may be preferable in consideration of an integration side with a composite polarizing plate and a bonding side with a window substrate.

In the touch sensing electrode 500, materials used in the art may be used without limitation, and in order not to impair visibility of an image displayed on the screen, it is preferable to use a transparent material or be formed in a fine pattern. For example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), PEDOT (poly(3,4-ethylenedioxythiophene) ), carbon nanotubes (CNT), metal wires, and the like. These may be used alone or in combination of two or more.

The metal used for the metal wire is not particularly limited, and examples thereof include silver (Ag), gold, aluminum, copper, iron, nickel, titanium, telenium, and chromium. These may be used alone or in combination of two or more.

In FIG. 1, the polarizing plate 200 is a coating layer formed on the window film 100 as a single layer of the polarizer 210, and the phase difference layer 300 is a single layer formed on the coating layer of the polarizer 210, and the phase difference layer ( When the touch sensing electrode 500 is directly formed on the 300, a window film in which a composite polarizer having a desirable thin film structure is integrated may be implemented.

In this case, the retardation layer 300 may be in the form of a single coating layer or film, and in order to form the touch sensing electrode 500 on the retardation layer 300, the touch sensing electrode 500 is a low temperature process such as a printing method or a coating method. It is preferred to apply.

When the touch sensing electrode is directly formed on the retardation layer 300, a separate bonding layer is not required between the retardation layer 300 and the touch sensing electrode, and an air gap is not formed, which is preferable.

The structure shown in FIG. 1 may enable the implementation of the most effective thin film structure when the window film of the present invention is applied to a flexible display. When a flexible window film is used as the window film 100, a polymer film or a thin film glass film is applied, so that it can have a thin film structure than a conventional hard and thick glass substrate. For example, a rigid glass substrate used in a conventional display may have a thickness of about 500 μm, while a flexible window film may have a thickness of about 150 to 50 μm. In addition, if both the polarizing plate 200 and the retardation layer 300 are formed of a single coating layer instead of a conventional film form, the thickness of the polarizing plate 200 and the retardation layer 300 can be reduced from about 50 μm to 1 to 5 μm, respectively. Moreover, when formed as a coating layer, a separate bonding layer having a thickness of about 30 µm is not required individually, so that the thickness can be further reduced.

As described above, when the thickness of the window film 100, the polarizing plate 200, and the retardation layer 300 is minimized, the conventional thickness of about 650 μm can be reduced to about 150 μm or less and about 110 μm. The radius of curvature of an object is calculated as (E*b*h ³ )/M (E: modulus, b: length, h: thickness, M: bending moment). It is most effective in reducing the radius. For example, if the thickness of about 660 μm is reduced to about 110 μm, the radius of curvature becomes about 35 times smaller. In consideration of this aspect, even when the thickness of the touch sensing electrode 500 is considered, it is preferable that the polarizing plate and the touch sensing electrode integrated window film of the present invention have a total thickness of 100 to 200 μm.

FIG. 2 schematically shows another embodiment of the window film integrated with the polarizing plate and the touch sensing electrode of the present invention. Referring to FIG. 2, the phase difference layer 300 may be bonded to the polarizing plate 200 through a separate bonding layer 400. In this case, the polarizing plate 200 may be a single layer of the polarizer 210, and in this case, it is more preferable to use the flexible window film for the window window film 100.

In the present invention, the "adhesive layer" includes a "adhesive layer" that completely attaches one layer to the other layer and an "adhesive layer" that is pasted so that it falls apart again.

When the retardation layer 300 is in the form of a film, it may be bonded to the polarizing plate 200 through the bonding layer 400. Even when the retardation layer 300 is in the form of a film, the retardation layer 300 may be a single film or a film having a liquid crystal layer structure formed on an alignment layer.

FIG. 3 schematically shows another embodiment of the window film integrated with the polarizing plate and the touch sensing electrode of the present invention. 3 illustrates a structure in which the polarizing plate 200 to which the phase difference layer 300 is bonded is bonded to the window film 100 through the bonding layer 400.

In order to implement the thin film structure, since the polarizer 210 and the retardation layer 300 are preferably coating layers, the transparent protective film 220 of the polarizer is used as the base material of the coating in this embodiment. Therefore, the polarizer 210 is provided on one surface of the transparent protective film 220 as a coating layer as described above, and the other side of the transparent protective film 220 uses a composite polarizing plate provided with a retardation layer 300 as a coating. It is preferable, and in this case, the window window film 100 is also more preferably used to implement a thin film structure using a flexible window film. However, even in the present embodiment, the case where the retardation layer 300 is a liquid crystal layer formed on an alignment layer other than a single coating layer is not excluded.

In addition, when the polarizing plate 200 to which the retardation layer 300 is bonded is bonded to the window film 100, it is preferable to bond the polarizing plate 20 side, not the retardation layer 300 side, to the window film. For example, it is preferable in terms of reducing reflected light when applied to a flexible display.

As the transparent protective film 220 usable in the present invention, a film excellent in transparency, mechanical strength, thermal stability, moisture shielding property, isotropy, and the like may be used. Specific examples include polyester-based resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; Cellulose-based resins such as diacetyl cellulose and triacetyl cellulose; Polycarbonate-based resins; Acrylic resins such as polymethyl (meth)acrylate and polyethyl (meth)acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based resins such as polyethylene, polypropylene, polyolefins having a cyclo-based or norbornene structure, and ethylene-propylene copolymers; Vinyl chloride resin; Amide resins such as nylon and aromatic polyamides; Imide resin; Polyethersulfone-based resins; Sulfone resins; Polyether ether ketone-based resins; Polyphenylene sulfide resins; Vinyl alcohol-based resins; Vinylidene chloride-based resins; Vinyl butyral resins; Allylate-based resins; Polyoxymethylene resins; And films composed of thermoplastic resins such as epoxy resins, and films composed of blends of the thermoplastic resins can also be used. Further, a film made of a thermosetting resin such as (meth)acrylic, urethane, acrylic urethane, epoxy, or silicone or UV curable resin can also be used.

The content of the thermoplastic resin in the polarizer transparent protective film 220 is 50 to 100% by weight, preferably 50 to 99% by weight, more preferably 60 to 98% by weight, and most preferably 70 to 97% by weight good. If the content is less than 50% by weight, the original high transparency of the thermoplastic resin may not be sufficiently expressed.

The polarizer transparent protective film 220 may contain one or more suitable additives. Examples of the additives include ultraviolet absorbers, antioxidants, lubricants, plasticizers, mold release agents, coloring inhibitors, flame retardants, nucleating agents, antistatic agents, pigments, coloring agents and the like.

In addition, the transparent protective film may be surface-treated as necessary. Examples of the surface treatment include dry treatment such as corona treatment and primer treatment, and chemical treatment such as alkali treatment including saponification treatment.

The touch sensing electrode 500 is formed on the opposite surface of the phase difference layer 300 to which the polarizing plate 200 is bonded. In order to form the touch sensing electrode 500 directly on the phase difference layer 300, a low temperature process is preferable as described above.

FIG. 4 schematically shows another embodiment of the window film integrated with the polarizing plate and the touch sensing electrode of the present invention. 4 is a structure in which the polarizing plate 200 to which the retardation layer 300 is bonded is bonded to the window film 100 through the bonding layer 400, and the retardation layer 300 to the polarizer 210 of the polarizing plate 200. It is a directly bonded structure, and the arrangement of the touch sensing electrode 500 is the same as in FIG. 3.

In this case, the polarizer 210 may be formed of a coating layer as in the above-described embodiment, or may be in the form of a film known in the art. When the polarizer 210 is a coating layer, it may be bonded to the transparent protective film 220 without a separate adhesive layer, but in the case of a film, it is bonded to the transparent protective film 220 through a separate adhesive layer (not shown).

The retardation layer 300 may be a single coating layer or a liquid crystal layer formed on an alignment layer, and a single coating layer is preferable for realizing a thin film structure. In this case, the window film 100 is also used to implement a flexible window film. It is more preferable.

FIG. 5 schematically shows another embodiment of the window film integrated with the polarizing plate and the touch sensing electrode of the present invention. 5 has a structure in which the touch sensing electrode 500 is directly formed on the window film 100, and the polarizing plate 200 and the phase difference layer 300 are sequentially stacked thereon.

When the touch sensing electrode 500 is formed on the window film 100, the touch sensing electrode 500 may be formed using a high temperature process such as sputtering in addition to the low temperature process described above.

The polarizing plate 200 that is bonded to the other surface of the touch sensing electrode 500 may be a single layer or a laminate in which the transparent protective film 220 is bonded to one surface of the polarizer 210. Bonding of the polarizing plate 200 to the touch sensing electrode 500 may be made of a separate bonding layer or may be made of a coating of a polarizer. When the polarizing plate 200 is a coating layer as a single layer of the polarizer 210, it is preferable that the touch sensing electrode 500 can prevent the generation of air gaps on both sides. The structure shown in FIG. 5 can enable the implementation of the most effective thin film structure when the window film of the present invention is applied to a flexible display, similar to the structure of FIG. 1 described above.

For the more specific structure and lamination relationship between the polarizing plate 200 and the retardation layer 300, the above-described cases of FIGS. 2 to 4 may be equally applied to the present embodiment.

The polarizing plate and the touch-sensing electrode-integrated window film of the present invention as described above may further include a structure in which an adhesive layer and a release film are sequentially stacked on at least one surface to facilitate transportation and bonding with other components.

The polarizing plate and the touch sensing electrode-integrated window film of the present invention can be attached to a display panel known in the art to form the outermost surface of the display panel, and can be usefully applied to a touch screen panel. The display may include a liquid crystal display, OLED, flexible display, and the like, preferably a flexible display, but is not limited thereto.

100: window film 200: polarizer
210: polarizer 220: transparent protective film
300: retardation layer 400: bonding layer
500: touch sensing electrode 600: electrode base film

Claims (13)

A window film that provides the outermost surface of the image display device;
A touch sensing electrode bonded to one surface of the window film; And
And a polarizing plate and a retardation layer laminated between the bonding surface of the touch sensing electrode and the one surface of the window film, or opposite to the bonding surface of the touch sensing electrode,
The polarizing plate includes a polarizer and a transparent protective film, the polarizer is coated on the upper surface of the transparent protective film, the retardation layer is coated on the lower surface of the transparent protective film,
The total thickness of 100 to 200㎛, the polarizing plate and the touch sensing electrode integrated window film.
delete The method according to claim 1, The polarizer is a coating layer, a polarizing plate and a touch-sensitive electrode integrated window film.
delete The method according to claim 1, The polarizing plate, the phase difference layer and the touch sensing electrode are sequentially stacked from the one surface of the window film, the bonding of the polarizing plate to the window film is made of a separate bonding layer, Window film with integrated touch sensing electrode.
delete The method according to claim 1, The touch sensing electrode, the polarizing plate and the phase difference layer are sequentially stacked from the one surface of the window film, the bonding of the polarizing plate to the touch sensing electrode is made of a separate bonding layer, the polarizing plate And touch sensing electrode integrated window film.
delete The method according to claim 1, The retardation layer is a quarter-wave plate, a polarizing plate and a touch sensing electrode integrated window film.
The method according to claim 1, The window film is to have flexibility, the polarizing plate and the touch sensing electrode integrated window film.
delete Claim 1, 3, 5, 7, 9 and 10 of any one of the window film, the touch screen panel having a window substrate of the outermost surface.
The touch screen panel of claim 12, which is bonded to a flexible display.

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