KR102024735B1 - Window plate and touch screen panel comprising the same - Google Patents

Abstract

The present invention relates to a window substrate and a touch screen panel including the same, and more particularly, to a window substrate and a non-conductive shading pattern formed on a non-display portion of one surface of the window plate, wherein the non-conductive shading pattern is an uneven structure. By including a first color pattern, a pearl pigment layer covering the first color pattern to form a flat surface, and a light shielding layer on the pearl pigment layer, a non-display unit capable of expressing a pattern having excellent three-dimensional feeling and visibility can be provided. The present invention relates to a window substrate and a touch screen panel having the same, which are more suitable for application of a large area substrate.

Description

A window substrate and a touch screen panel having the same {{WINDOW PLATE AND TOUCH SCREEN PANEL COMPRISING THE SAME}

The present invention relates to a window substrate and a touch screen panel having the same, and more particularly, to a window substrate capable of expressing various three-dimensional effects and a touch screen panel having the same.

With the recent rapid development of semiconductor technology, the demand for display devices that are more compact and lighter and have improved performance is exploding.

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

The display device has been changed from a CRT type to a liquid crystal display (LCD), a plasma display panel (PDP), an organic light-emitting diode (OLED), or the like. In particular, a liquid crystal display (LCD) has a low power consumption, a smaller size and a lighter weight than a conventional CRT, and does not emit harmful electromagnetic waves. Because of this, it has been attracting attention as the next generation of high-tech display, and now it is being used in almost all information processing equipment that needs a display device. In addition, due to the recent spread of smart phones, the use of touch screen panels incorporating such display devices with touch sensors is rapidly increasing.

As shown in FIG. 1, when a mobile phone is taken as an example, a cover window substrate is disposed on the outermost surface, and the cover window substrate is a display unit which is an image on the front surface and accepts a touch input as necessary, and a display unit of the image sensor. It is divided into a non-display unit surrounding the.

The non-display portion is provided with a non-display portion shielding pattern to cover the opaque conductive wiring pattern and various circuits, and to print a trademark or logo of a mobile phone maker as necessary. In the prior art, the non-display portion was mainly intended to conceal wiring or circuits, and thus, the non-display portion is generally formed of a simple color layer.

Korean Patent Publication No. 2013-56598 discloses a technique of forming a bezel pattern of a touch panel using a thermosetting black ink composition in a gravure printing, offset printing, screen printing, reverse offset, or the like method.

However, Korean Patent Publication No. 2013-56598 discloses only a printing method for the entire bezel (non-display portion), but does not disclose a method of forming a pattern such as a logo corresponding to a part of the non-display portion.

Patent Document 1: Korean Patent Publication No. 2013-56598

An object of the present invention is to provide a window substrate having a non-display portion having a pattern having a three-dimensional effect.

Another object of the present invention is to provide a window substrate having a non-display portion excellent in pattern visibility.

In addition, another object of the present invention is to provide a method for manufacturing a non-display portion having a pattern having a three-dimensional effect.

1. A non-conductive shading pattern formed on a window substrate and a non-display portion of one surface of the window plate, wherein the non-conductive shading pattern includes a first color pattern having an uneven structure and a flat surface covering the first color pattern. A window substrate for a touch screen panel comprising a pearl pigment layer and a light shielding layer on the pearl pigment layer.

2. In the above 1, wherein the height of the first color pattern is 1 to 20㎛, window substrate for a touch screen panel.

3. In the above 1, wherein the pearl pigment in the pearl pigment layer is 0.2 to 2% by weight relative to the total weight of the pearl pigment layer, the window substrate for a touch screen panel.

4. In the above 1, wherein the pearl pigment in the pearl pigment layer has an average particle diameter of 5 to 15㎛, the window substrate for a touch screen panel.

5. In the above 1, wherein the pearl pigment in the pearl pigment layer comprises a reflective layer core portion and a high refractive index layer coating the core portion, the window substrate for a touch screen panel.

6. In the above 5, the reflective layer core portion is made of mica, sericite, talc, kaolin, smectite clay mineral, plate titanium dioxide, plate silica, plate aluminum oxide, boron nitride, barium sulfate and plate titania-silica composite oxide A window substrate for a touch screen panel, which is at least one selected from the group.

7. In the above 5, wherein the high refractive index layer comprises at least one selected from the group consisting of TiO ₂ , ZrO ₂ , Sb ₂ O ₃ , ZnS, SnO ₂ and ZnO, window substrate for a touch screen panel.

8. In the above 1, wherein the light shielding layer is made of a plurality of colored layers, the touch screen panel window substrate.

9. In the above 8, wherein the light shielding layer formed of a plurality of colored layers, each layer is different in color from each other, the window substrate for a touch screen panel.

10. In the above 8, wherein the light shielding layer formed of a plurality of colored layers is the top surface of the window substrate for a touch screen panel.

11. applying a composition for forming a non-conductive color pattern on a non-display portion of one surface of the window substrate and forming a first color pattern by photolithography; Applying a photosensitive resin composition for forming a pearl pigment layer on the window substrate on which the first color pattern is formed, and forming a pearl pigment layer on an outer surface of the first color pattern by photolithography; And applying a composition for forming a non-conductive color pattern on the pearl pigment layer and forming a light shielding layer by photolithography.

12. The method of claim 11, wherein the non-conductive color pattern forming composition comprises a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent.

13. In the above 11, wherein the pearl pigment layer-forming photosensitive resin composition comprises a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent containing a pearl pigment, the pearl pigment is based on the solid content of the total weight of the composition 0.2 to 2% by weight relative to the manufacturing method of the window substrate for a touch screen panel.

14. In the above 11, wherein the light shielding layer is formed of a plurality of colored layers, the manufacturing method of the window substrate for a touch screen panel.

15. A touch screen panel having the window substrate of any one of the above 1 to 10.

16. An image display device comprising the above touch screen panel.

The window substrate of the present invention includes a color pattern having a concave-convex structure and a pearl pigment layer on the non-display portion, thereby enabling to realize a pattern having a three-dimensional effect and having excellent visibility and various textures.

In addition, the method for manufacturing a window substrate of the present invention can produce a pattern of a thin film structure, and can be easily applied to a large-area substrate by forming an uneven pattern including a pearl pigment by photolithography.

1 is a schematic perspective view of a mobile phone to which a touch screen panel is applied.
2 is a schematic vertical cross-sectional view of a window substrate having a non-conductive shading pattern according to the present invention.
3 is a view schematically showing an embodiment of the manufacturing method of the present invention.

The present invention includes a window substrate and a non-conductive shading pattern formed on a non-display portion of one surface of the window plate, wherein the non-conductive shading pattern includes a first color pattern having an uneven structure and a flat surface covering the first color pattern. The present invention relates to a window substrate having a non-display unit capable of expressing a pattern having excellent stereoscopic feeling and visibility by including a pearl pigment layer and a light shielding layer on the pearl pigment layer, and a touch screen panel including the same.

In the present invention, the three-dimensional effect is a concept that includes not only being visually recognized as a three-dimensional structure but also having a difference in the shape seen from the front and the slope.

Hereinafter, the present invention will be described in more detail with reference to the drawings. However, the following drawings attached to the present specification are intended to illustrate preferred embodiments of the present invention, and together with the contents of the present invention serves to further understand the technical spirit of the present invention, the present invention described in such drawings It should not be construed as limited to matters.

2 shows a schematic vertical cross-sectional view of a window substrate 100 having a non-conductive shading pattern 200 of the present invention.

The non-conductive shading pattern 200 according to the present invention includes a first color pattern 210, a pearl pigment layer 220, and a shading layer 230.

The first color pattern 210 is formed of a concave-convex structure protruding on the surface of the window substrate 100 to form a texture structure of the non-conductive shading pattern 200, thereby forming a three-dimensional structure of the non-conductive shading pattern 200. to provide. The desired pattern may be formed according to the pattern shape of the first color pattern 210.

The height of the first color pattern 210 is preferably 1 to 20㎛. If the height is less than 1 μm, visibility (optical characteristics or pearly feeling) may be reduced, and if it is more than 20 μm, the processability may be reduced.

The first color pattern 210 may be formed of a composition for forming a non-conductive color pattern capable of photolithography, which will be described later.

The pearl pigment layer 220 is a layer covering the first color pattern 210. When viewed from the viewing side, the pearl pigment layer 220 reflects and refracts incident light due to the texture pattern of the uneven structure implemented by the first color pattern 210. , Due to the reflection phenomenon in the pearl pigment layer 220, serves to give a three-dimensional effect and texture to the pattern by the first color pattern 210.

The pearl pigment contained in the pearl pigment layer 220 is a multi-color pearl luster pigment, and refers to a pigment that represents pearly, iridescent, metallic or the like. The pearl pigment used in the present invention not only has excellent aesthetics, but also has high reflectance and excellent performance of realizing three-dimensional feeling and texture.

The pearl pigment used in the present invention may include a reflective layer core portion and a high refractive index layer coating the core portion. Specific materials of the reflective layer core part and the high refractive index layer may be variously selected according to a desired color, a reflectance, and the like.

Examples of the reflective layer core include mica, sericite, talc, kaolin, smectite clay mineral, plate titanium dioxide, plate silica, plate aluminum oxide, boron nitride, barium sulfate, plate titania and silica composite oxide, and the like. These can be used individually or in mixture of 2 or more types, respectively.

The high refractive index layer may include TiO ₂ , ZrO ₂ , Sb ₂ O ₃ , ZnS, SnO ₂ , ZnO, and the like, and these may be used alone or in combination of two or more thereof. The low refractive index layer may include SiO ₂ , Al ₂ O ₃ , MgF ₂ , CaF ₂ , cryolite, and the like, which may be used alone or in combination of two or more thereof.

It is preferable that the refractive index of a high refractive index layer is 2.4-3.0. It can exhibit the excellent reflectance and aesthetics of the pearl pigment in the above range.

It is preferable that the pearl pigment used by this invention is 5-15 micrometers in average particle diameter. The use of the pearl pigment having an average particle diameter in the above range is high in storage stability of the composition, and helps to form a good pattern by improving the shielding problem of the curing rays. If the average particle diameter is less than 5 μm, the visibility (optical properties or pearly feeling) may be lowered. If the average particle diameter is more than 15 μm, the nozzle may be clogged during application of the composition, or the uniformity of the coated surface may be reduced, thereby making pattern formation difficult.

Pearl pigment according to the present invention is included in 0.2 to 2% by weight relative to the total weight of the pearl pigment layer. If the content is less than 0.2% by weight, the visibility (optical properties or pearly) may be lowered, and if it is more than 2% by weight, the processability may be lowered.

The pearl pigment layer 220 may further include colorants known in the art within the scope of the present invention, for example, dyes and pigments, in addition to the above-described pearl pigment, as necessary.

The light shielding layer 230 forms a flat surface on the top of the pearl pigment layer 220 so that the subsequent bonding process can be easily performed, and the first color pattern coated with the shielding and pearl pigment layer 220 such as metal wiring And to protect the background 210 of the non-conductive shading pattern. Therefore, the first color pattern 210 may have the same color or a different color.

In addition, the light blocking layer 230 may be formed of a plurality of colored layers to implement a desired color, in which case each layer may have a different color.

For example, a mixture of colors may be implemented by forming a plurality of layers having different colors, and a layer of colors to be implemented may be formed first, and then the top surface (the other side of the other side viewed from the viewer side) may be used for visibility of the colors. End layer) may form a black color layer.

It is preferable that the thickness of the light shielding layer 230 is 4-30 micrometers. If the thickness is less than 4㎛ color uniformity or shielding performance may be lowered, if the thickness is more than 30㎛ processability may be lowered.

The window substrate of the present invention having the non-conductive light shielding pattern as described above may include a non-display portion having a pattern having a three-dimensional effect and excellent visibility.

Hereinafter, the manufacturing method of the window substrate of this invention is demonstrated in detail. 3 schematically shows an embodiment of the manufacturing method of the present invention.

First, a composition for forming a non-conductive color pattern is applied to a non-display portion of one surface of a window substrate, and a first color pattern is formed by photolithography.

The composition for forming a non-conductive color pattern includes a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a solvent, and the like, and is a composition capable of photolithography.

The type of colorant is not particularly limited to achieve the color required by the user, for example, white, red, green, blue dyes and pigments; Dyes and pigments such as yellow, orange, violet and brown for toning; Carbon black etc. are mentioned. These can be used individually or in mixture of 2 or more types.

The colorant may further include metal powder, white pigment, fluorescent pigment, and the like as necessary.

The pigment may be an inorganic pigment or an organic pigment.

The kind of the inorganic pigment is not particularly limited, and examples thereof include barium sulfate, lead sulfate, titanium oxide, yellow lead, bengal, chromium oxide, and carbon black.

The kind of organic pigment is not specifically limited, For example, the pigment enumerated below by the C.I. (color index) number is mentioned.

Examples of the white pigment include CI Pigment White 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25, 26, 27, 28, 32. It is preferable to use CI Pigment White 6 and CI Pigment White 22 in terms of efficiency and whiteness. TiO _{2, which} is classified as CI Pigment White 6, has an advantage that the price is very low, the refractive index is high, and the reflectance is high, and thus may be used as an effective white colorant. Preferably, the TiO ₂ preferably has a rutile structure. Since TiO ₂ having a rutile structure has excellent whiteness, it can be preferably used for the display outermost light shielding layer.

Yellow pigments are, for example, CI pigment yellow 1, 2, 3, 4, 5, 6, 12, 13, 14, 16, 17, 24, 55, 65, 73, 74, 81, 83, 87, 93 , 94, 95, 97, 100, 101, 105, 108, 109, 110, 116, 120, 127, 128, 129, 133, 138, 139, 147, 148, 150, 151, 153, 154, 155, 166 , 168, 169, 170, 172, 173, 174, 175, 176, 180, 185, 193, 194, 202 and the like.

Orange pigments are, for example, CI pigment orange 1, 2, 5, 13, 16, 17, 19, 22, 24, 34, 36, 38, 39, 43, 46, 48, 61, 62, 64, 65 , 67, 69, 73, 77 and the like.

 As the red pigment, for example, CI Pigment Red 1, 2, 3, 4, 5, 6, 8, 9, 12, 14, 15, 17, 22, 23, 31, 37, 38, 41, 48: 1, 48: 2, 48: 3, 49, 50: 1, 52: 1, 53, 57: 1, 58: 4, 60, 63, 64, 68, 81, 88, 90: 1, 112, 114, 122, 123, 144, 146, 147, 149, 150, 151, 166, 168, 170, 175, 176, 177, 178, 179, 181, 185, 187, 188, 190, 193, 194, 202, 207, 208, 209, 214, 216, 220, 221, 224, 242, 243, 245, 247, 254, 255, 264, 272 and the like.

Violet pigments include C.I. pigment violet 1, 2, 3, 5, 19, 23, 29, 31, 32, 37, 39, 50 and the like.

Blue pigments include CI Pigment Blue 1, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 17, 25, 56, 60, 66, 75, 79 and the like. Can be mentioned.

As a green pigment, C.I. pigment green 2, 7, 8, 13, 36, 54 etc. are mentioned, for example.

Examples of the brown pigment include C.I. Pigment Brown 1, 22, 23, 25, 27 and the like.

As a black pigment, C.I. pigment black 1, 7, 31, 32, etc. are mentioned, for example.

The type of the dye is not particularly limited, and examples thereof include azo dyes, anthraquinone dyes, phthalocyanine dyes, quinoneimine dyes, quinoline dyes, nitro dyes, carbonyl dyes and methine dyes. have.

Azo dyes are not particularly limited, for example CI acid yellow 11, CI acid orange 7, CI acid red 37, CI acid red 180, CI acid blue 29, CI direct red 28, CI direct red 83 CI Direct Yellow 12, CI Direct Orange 26, CI Direct Green 28, CI Direct Green 59, CI Reactive Yellow 2, CI Reactive Red 17, CI Reactive Red 120, CI Reactive Black 5, CI Disperse Orange 5 CI Disperse Red 58, CI Disperse Blue 165, CI Basic Blue 41, CI Basic Red 18, CI Modular Red 7, CI Mordant yellow 5, C.I. mordant black 7, etc. are mentioned.

Anthraquinone type dye is not specifically limited, For example, CI bart blue 4, CI acid blue 40, CI acid green 25, CI reactive blue 19, CI reactive blue 49, CI disperse red 60, CI disc Perth Blue 56, CI Disperse Blue 60, etc. are mentioned.

Phthalocyanine type dye is not specifically limited, For example, C.I. pad blue 5 etc. are mentioned.

A quinone imine type dye is not specifically limited, For example, C.I. basic blue 3, C.I. basic blue 9, etc. are mentioned.

The quinoline dye is not particularly limited, and examples thereof include C.I. Solvent Yellow 33, C.I. Acid Yellow 3, C.I.Dispers Yellow 64, and the like.

The nitro dye is not particularly limited, and examples thereof include C.I. acid yellow 1, C.I.acid orange 3, C.I.disperse yellow 42, and the like.

Specific examples of the dyes, pigments and carbon blacks exemplified above include Mitsubishi Carbon Black M1000, Mitsubishi Carbon Black MA-100, Mitsubishi Carbon Black # 40, Victoria Pure Blue (42595), Oramine O (41000), and Catylon Brilliant Flavin (basic 13), Rhodamine 6GCP (45160), Rhodamine B (45170), Saccharin OK 70: 100 (50240), Erioglausin X (42080), NO.120 / Rionol Yellow (21090) , Lionol Yellow GRO (21090), Simulator Fast Yellow GRO (21090), Simulator Fast Yellow 8GF (21105), Benzidine Yellow 4J-564D (21095), Patiotol Yellow L0960 (Pigment Yellow 139), Yellow Pigment E4-GN (Pigment Yellow 150 derivative), Simula Fast Red 4015 (12355), Lionol Red 7B4401 (15850), Pathogen Blue JGR-L (74160), Lionol Blue SM (26150), Lionol Blue ES (Pigment Blue 15: 6, Pigment Blue 1536), Lionogen Red GD (Pigment Red 168, Pigment Red 108), Chromophthal Red A2B (Pigment Red 177), the monovalent pore red B-CF (Pigment Red 254), heliogen green L8730 (Pigment Green 7), Lionol Green 2YS (Pigment Green 36), etc. are mentioned.

The colorant is preferably contained in 0.5 to 30% by weight, preferably 1 to 25% by weight relative to the total weight of solids in the composition.

The alkali-soluble binder resin can be used without any particular limitation as long as it can be dissolved in the solvent of the present invention and functions as a binder resin for the colorant and can be dissolved in an alkaline developer.

Examples of the binder resin include a carboxyl group-containing monomer and a copolymer with another monomer copolymerizable with the monomer.

As said carboxyl group-containing monomer, For example, unsaturated monocarboxylic acid, unsaturated carboxylic acid, such as unsaturated polyhydric carboxylic acid which has 1 or more carboxyl groups in molecules, such as unsaturated dicarboxylic acid and unsaturated tricarboxylic acid, etc. are mentioned. Can be mentioned.

As said unsaturated monocarboxylic acid, acrylic acid, methacrylic acid, crotonic acid, (alpha)-chloroacrylic acid, cinnamic acid etc. are mentioned, for example.

As said unsaturated dicarboxylic acid, a maleic acid, a fumaric acid, itaconic acid, a citraconic acid, a mesaconic acid, etc. are mentioned, for example.

The unsaturated polyhydric carboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride and citraconic anhydride. In addition, the unsaturated polyhydric carboxylic acid may be a mono (2-methacryloyloxyalkyl) ester thereof, for example, monosuccinate mono (2-acryloyloxyethyl), monosuccinate mono (2-methacryloyloxy Ethyl), mono phthalate (2-acryloyloxyethyl), mono phthalate (2-methacryloyloxyethyl), and the like. The unsaturated polyhydric carboxylic acid may be mono (meth) acrylate of the sock end dicarboxy polymer, and examples thereof include ω-carboxypolycaprolactone monoacrylate and ω-carboxypolycaprolactone mono methacrylate. have.

The said carboxyl group-containing monomer can be used individually or in mixture of 2 or more types, respectively.

As another monomer copolymerizable with the said carboxyl group-containing monomer, For example, styrene, (alpha) -methylstyrene, o-vinyl toluene, m-vinyl toluene, p-vinyl toluene, p-chloro styrene, o-methoxy styrene, m-meth Oxy styrene, p-methoxy styrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p- Aromatic vinyl compounds such as vinyl benzyl glycidyl ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxy Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxy Hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl Relate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl Methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol meth Methacrylate, methoxy propylene glycol acrylate, methoxy propylene glycol methacrylate, methoxy dipropylene glycol acrylate, methoxy dipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadier Nylacrylate, dicyclopentadiethyl methacrylate, 2-hydroxy-3-phenoxy Acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, unsaturated carboxylic acid esters such as glycerol monoacrylate, glycerol monomethacrylate; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethyl Unsaturated carboxyl such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate Acid aminoalkyl esters; Unsaturated carboxylic acid glycidyl esters such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl esters such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; Unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile and vinylidene cyanide; Unsaturated amides such as acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethylacrylamide and N-2-hydroxyethyl methacrylamide; Maleimide, N-phenylmaleimide. Unsaturated imides such as N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; And monoacryloyl or monomethacryloyl groups at the terminal of the polymer molecular chain of polystyrene, polymethylacrylate, polymethylmethacrylate, poly-n-butylacrylate, poly-n-butylmethacrylate, polysiloxane. The macromonomer which has, etc. are mentioned. These monomers can be used individually or in mixture of 2 or more types, respectively.

When the binder resin is a copolymer of a carboxyl group-containing monomer and another monomer copolymerizable with the monomer, the content ratio of the structural unit derived from the carboxyl group-containing monomer is a mass fraction with respect to the total content of the structural units constituting the copolymer. Furnace is 10 to 50% by weight, preferably 15 to 40% by weight, more preferably 25 to 40% by weight. If the content ratio of the structural unit derived from the carboxyl group-containing monomer is 10 to 50% by weight based on the above-mentioned standard, solubility in the developer is good, and it is preferable because the pattern is accurately formed during development.

As said binder resin, it is (meth) acrylic acid / methyl (meth) acrylate copolymer, (meth) acrylic acid / benzyl (meth) acrylate copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth) acrylic acid, for example. Rate / benzyl (meth) acrylate copolymer, (meth) acrylic acid / methyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / methyl (meth) acrylate / polymethyl (meth) acrylate macromonomer Copolymer, (meth) acrylic acid / benzyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / benzyl (meth) acrylate / polymethyl (meth) acrylate macromonomer copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) acrylate / Rimethyl (meth) acrylate macromonomer copolymer, (meth) acrylic acid / styrene / benzyl (meth) acrylate / N-phenylmaleimide copolymer, (meth) acrylic acid / mono (2-acryloyloxy) / Styrene / benzyl (meth) acrylate / N-phenylmaleimide copolymer, (meth) acrylic acid / mono succinate mono (2-acryloyloxyethyl) / styrene / allyl (meth) acrylate / N-phenylmaleimide copolymer And (meth) acrylic acid / benzyl (meth) acrylate / N-phenylmaleimide / styrene / glycerol mono (meth) acrylate copolymer.

Among these, (meth) acrylic acid / benzyl (meth) acrylate copolymer, (meth) acrylic acid / benzyl (meth) acrylate / styrene copolymer, (meth) acrylic acid / methyl (meth) acrylate copolymer, (meth) acrylic acid / Methyl (meth) acrylate / styrene copolymer can be preferably used.

The binder resin is not particularly limited, but the weight average molecular weight in terms of polystyrene thereof is preferably in the range of 3,000 to 100,000, more preferably in the range of 3,000 to 50,000, particularly 5,000 to 50,000. When the weight average molecular weight of the binder resin is in the range of 3,000 to 100,000, it is preferable because the colorant is easily dispersed, the viscosity is low, and the storage stability is excellent.

The binder resin may be included in 3 to 80% by weight, preferably 5 to 70% by weight relative to the total weight of solids in the composition. When the content of the binder resin is 3 to 80% by weight based on the above standards, it is preferable because the dispersing of the colorant is easy and the storage stability is excellent.

A photopolymerizable compound is a compound which can superpose | polymerize by the action of a light and a photoinitiator, A monofunctional monomer, a bifunctional monomer, another polyfunctional monomer, etc. can be used.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, and N-vinylpyrroli Money, etc.

Specific examples of the bifunctional monomers include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, and bisphenol Bis (acryloyloxyethyl) ether of A, 3-methylpentanediol di (meth) acrylate, etc. are mentioned.

Specific examples of the trifunctional or higher polyfunctional photopolymerizable compound include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, Pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, tipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated Dipentaerythritol hexa (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like.

Among the photopolymerizable compounds exemplified above, bifunctional or higher polyfunctional monomers can be preferably used, and trifunctional or higher (meth) acrylic acid esters and urethane (meth) acrylates have excellent polymerizability and can improve strength. Particularly preferred. The photopolymerizable compounds exemplified above may be used alone or in combination of two or more.

The photopolymerizable compound may be included in an amount of 1 to 60% by weight, preferably 5 to 50% by weight, based on the total weight of solids in the composition. When the photopolymerizable compound is included in the above range, the intensity or smoothness of the pixel portion may be good.

As the photopolymerization initiator, a photopolymerization initiator known in the art may be used without particular limitation, and for example, at least one selected from the group consisting of triazine compounds, acetophenone compounds, biimidazole compounds, and oxime compounds may be used. have.

Specific examples of the triazine-based compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine and 2,4-bis (trichloromethyl) -6 -(4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, 2,4-bis (Trichloromethyl) -6- (4-methoxystyryl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (5-methylfuran-2- Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan-2-yl) ethenyl] -1,3,5-triazine , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl ) -6- [2- (3,4-dimethoxy phenyl) ethenyl] -1,3,5-triazine and the like.

Specific examples of the acetophenone compounds include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1- [4- (2-hydroxy Hydroxyethoxy) phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexylphenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1 -One, 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one, and the like.

Specific examples of the biimidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole and 2,2'-bis (2,3-dichloro Phenyl) -4,4 ', 5,5'-tetra phenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) biimidazole , 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) biimidazole, 2,2-bis (2,6-dichlorophenyl) -4, The imidazole compound etc. which the phenyl group of a 4 ', 5,5'- tetraphenyl- 1,2'-biimidazole or a 4,4', 5,5 'position are substituted by the carboalkoxy group are mentioned. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3-dichlorophenyl) -4,4' , 5,5'-tetraphenylbiimidazole, 2,2-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-biimidazole are preferred Used.

Specific examples of the oxime compound include o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one, and OXE01 and OXE02 of BASF Corporation are typical examples of commercially available products.

Moreover, as long as it does not impair the effect of this invention, the other photoinitiator etc. which are normally used in this field can also be used together. In addition, the photopolymerization initiator may be used in combination with a photopolymerization initiation aid generally used in this field.

Specifically, an amine compound and a carboxylic acid compound can be illustrated. Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine; 4-dimethylaminobenzoic acid methyl, 4-dimethylaminobenzoic acid ethyl, 4-dimethylaminobenzoic acid isoamyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, benzoic acid 2-dimethylaminoethyl, N, N-dimethylparatoluidine, 4,4 Aromatic amine compounds, such as "-bis (dimethylamino) benzophenone (common name: Michler's ketone) and 4,4'-bis (diethylamino) benzophenone, are mentioned. Preferably the amine compound may be an aromatic amine compound.

Specific examples of the carboxylic acid compound include phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, chlorophenylthioacetic acid, And aromatic heteroacetic acids such as dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid.

The photopolymerization initiator is preferably included 1 to 40% by weight, preferably 3 to 20% by weight relative to the total weight of solids in the composition. When the photopolymerization initiator is included in the content range, the exposure time can be shortened and productivity can be improved by increasing the sensitivity.

The solvent is not particularly limited. Preferably, ethers, aromatic hydrocarbons, ketones, alcohols, esters or amides and the like can be used.

Specifically, the solvent is ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, di Ethers such as ethylene glycol dibutyl ether; Aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, methyl cellosolve acetate, ethyl cellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-meth Methoxybutyl acetate, 3-methyl-3-methoxy-1-butyl acetate, methoxypentyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol Monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate, propylene carbonate or γ-buty Rockactone, etc. And esters thereof. In view of the applicability and dryness in the solvents exemplified above, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl lactate, butalactate, 3-ethoxypropionate, Methyl 3-methoxypropionate etc. are mentioned. The solvents exemplified above may be used alone or in combination of two or more.

The solvent may be included in 30 to 90% by weight, preferably 50 to 80% by weight relative to the total weight of the composition.

When the solvent is included in the above range, the applicability is good at the time of coating the composition is preferable.

The formation of the first color pattern 210 by photolithography may be performed by applying a composition for forming a non-conductive color pattern on a non-display portion of one surface of the window substrate 100, and exposing and developing the non-conductive color pattern.

The coating is to apply a non-conductive color pattern forming composition to a non-display portion on one surface of the window substrate 100 to pre-dry to remove volatile components such as solvent to obtain a smooth coating film.

The coating method is not particularly limited, and for example, a coating method using a slit nozzle such as a spray coating method, a roll coating method, a discharge nozzle type coating method, a rotary coating method such as a central dropping spin method, an extrusion coating method, a bar Coating method etc. are mentioned.

The exposure is to irradiate ultraviolet rays to a specific region through a mask in order to obtain a desired pattern on the coating film obtained above. Under the present circumstances, parallel light rays are irradiated uniformly to the whole exposure part, and apparatuses, such as a mask aligner and a stepper, can be used so that a mask and a board | substrate may exactly match.

The said image development produces a desired pattern by making the coating film which hardened | cured above in contact with aqueous alkali solution which is a developing solution, and developing. After the development, a baking step of about 10 to 60 minutes at 150 to 230 ℃ can be carried out as necessary. If necessary, an additional baking step may be included after the baking step.

Through the above process, the first color pattern 210 may be formed on the window substrate 100.

Next, a photosensitive resin composition for forming a pearl pigment layer is coated on the window substrate on which the first color pattern 210 is formed, and a pearl pigment layer having a first color pattern is formed by photolithography.

The photosensitive resin composition for pearl pigment layer formation contains a coloring agent, alkali-soluble binder resin, a photopolymerizable compound, a photoinitiator, and a solvent containing a pearl pigment.

The colorant including the pearl pigment may further include colorants known in the art within the scope of the present invention, for example, dyes and pigments, in addition to the above-mentioned pearl pigments, and the like may be used in the aforementioned composition for forming a non-conductive color pattern. It can be used in the same category as the described colorant. The pearl pigment is included at 0.2 to 2% by weight based on the total weight of the composition. If the content is less than 0.2% by weight, visibility may be lowered, and if the content is more than 2% by weight, fairness may be lowered.

Since the alkali-soluble binder resin, the photopolymerizable compound, the photopolymerization initiator, and the solvent of the photosensitive resin composition for forming a pearl pigment layer can be used in the same components and contents as the above-described compositions for forming a nonconductive color pattern, the description is omitted here. do.

After applying and curing the photosensitive resin composition for forming a pearl pigment layer, the pearl pigment layer 220 may remain only in a desired portion of the non-display portion by photolithography. If necessary, photolithography of the pearl pigment layer 220 may be performed simultaneously with photolithography for forming the light shielding layer 230, which will be described later, and may be performed in one process.

Next, a composition for forming a non-conductive color pattern is formed on the pearl pigment layer 220 and a light shielding layer is formed by photolithography.

The light shielding layer may be formed in the same photolithography manner by using a composition in the same category as the composition for forming a non-conductive color pattern used in the first color pattern. The light shielding layer may be formed of a plurality of colored layers as needed, in which case each colored layer may have a different color from each other. The color of each layer can be applied by selecting an appropriate colorant according to the color required. As a preferred example, as shown in FIG. 3, the black color layer 231 may be formed on the top surface for the shielding effect of the metal wiring and the clear color representation of the lower colored light blocking layer 230.

As described above, the non-conductive shading pattern of the present invention formed by deposition and photolithography can realize a thin film structure.

The window substrate of the present invention may be combined with a configuration commonly used in the art to form a touch screen panel. For example, the sensing pattern formed on the window substrate on which the non-conductive pattern is formed; A metal wire connecting the sensing pattern to a circuit and formed on a non-display portion corresponding area; A protective film formed on the sensing pattern; And a printed circuit board connected to the electrode pattern.

The sensing pattern serves to detect static electricity generated in a human body by connecting a finger to the display unit, which is a touch area of the image sensor, and connect the electrical signal.

The conductive material used for forming the sensing pattern is not particularly limited, and for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO), and cadmium tin oxide (CTO). ), PEDOT (poly (3,4-ethylenedioxythiophene)), carbon nanotubes (CNT), metal wires, and the like. These can be used individually or in mixture of 2 or more types.

The metal used for a metal wire is not specifically limited, For example, silver (Ag), gold, aluminum, copper, iron, nickel, titanium, telenium, chromium, etc. are mentioned. These can be used individually or in mixture of 2 or more types.

The metal wires transfer electrical signals generated in the sensing pattern by the touch of the window substrate display to the FPCB, the IC chip, and the like.

The protective film protects the sensing pattern and the metal wiring and prevents the window substrate from being scattered when the window substrate is broken.

The material of the protective film is not particularly limited as long as it provides durability and is a transparent material, and may be, for example, polyethylen terephthalate (PET).

Various types of printed circuit boards may be used as the printed circuit board, for example, a flexible printed circuit board (FPCB).

The touch screen panel according to the present invention can be usefully used in combination with an image display device such as a liquid crystal display, an OLED, a flexible display, and the like through additional processes known in the art.

100: window substrate 200: non-conductive shading pattern
210: first color pattern 220: pearl pigment layer
230: shading layer 231: black color layer of the shading layer

Claims (16)

A window substrate including a display unit and a non-display unit, and a non-conductive light shielding pattern formed on the non-display unit on one surface of the window substrate,
The non-conductive shading pattern may include a first color pattern having an uneven structure, a pearl pigment layer covering a top surface and sidewalls of the uneven structure of the first color pattern to form a flat surface, and a light blocking layer over the pearl pigment layer. A window substrate for a touch screen panel.
The window substrate for a touch screen panel according to claim 1, wherein the height of the first color pattern is 1 to 20 μm.
The window substrate for a touch screen panel according to claim 1, wherein the pearl pigment in the pearl pigment layer is included in an amount of 0.2 to 2 wt% based on the total weight of the pearl pigment layer.
The window substrate for a touch screen panel according to claim 1, wherein the pearl pigment in the pearl pigment layer has an average particle diameter of 5 to 15 µm.
The window substrate of claim 1, wherein the pearl pigment in the pearl pigment layer comprises a reflective layer core portion and a high refractive index layer coating the core portion.
The method according to claim 5, wherein the core of the reflective layer in the group consisting of mica, sericite, talc, kaolin, smectite clay mineral, plate titanium dioxide, plate silica, plate aluminum oxide, boron nitride, barium sulfate and plate titania-silica composite oxide A window substrate for a touch screen panel, which is at least one selected.
The window substrate of claim 5, wherein the high refractive index layer comprises at least one selected from the group consisting of TiO ₂ , ZrO ₂ , Sb ₂ O ₃ , ZnS, SnO _2, and ZnO.
The window substrate for a touch screen panel according to claim 1, wherein the light blocking layer is formed of a plurality of colored layers.
The window substrate for a touch screen panel according to claim 8, wherein the light shielding layer formed of the plurality of colored layers has a different color from each other.
The window substrate for a touch screen panel as set forth in claim 8, wherein the light blocking layer formed of a plurality of colored layers has a black color at a top surface thereof.
Applying a composition for forming a non-conductive color pattern on a non-display portion of one surface of the window substrate and forming a first color pattern having an uneven structure by photolithography;
Applying a photosensitive resin composition for forming a pearl pigment layer on the window substrate on which the first color pattern is formed, and forming a pearl pigment layer covering the top surface and sidewalls of the uneven structure of the first color pattern by photolithography; And
Applying a composition for forming a non-conductive color pattern on the pearl pigment layer and forming a light shielding layer by photolithography;
Method of manufacturing a window substrate for a touch screen panel comprising a.
The method for manufacturing a window substrate for a touch screen panel according to claim 11, wherein the non-conductive color pattern forming composition comprises a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent.
The photosensitive resin composition for forming a pearl pigment layer comprises a colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent, wherein the pearl pigment is based on the total weight of the composition based on a solid content. A method for manufacturing a window substrate for a touch screen panel, which comprises 0.2 to 2% by weight.
The method of manufacturing a window substrate for a touch screen panel according to claim 11, wherein the light shielding layer is formed of a plurality of colored layers.
A touch screen panel comprising the window substrate of any one of claims 1 to 10.
An image display device comprising the touch screen panel of claim 15.

Images