WO2014137058A1 - 커버글라스 및 이의 제조 방법 - Google Patents
커버글라스 및 이의 제조 방법 Download PDFInfo
- Publication number
- WO2014137058A1 WO2014137058A1 PCT/KR2013/011028 KR2013011028W WO2014137058A1 WO 2014137058 A1 WO2014137058 A1 WO 2014137058A1 KR 2013011028 W KR2013011028 W KR 2013011028W WO 2014137058 A1 WO2014137058 A1 WO 2014137058A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glass substrate
- etching
- pattern portion
- pattern
- glass
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/3411—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials
- C03C17/3417—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions with at least two coatings of inorganic materials all coatings being oxide coatings
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/18—Packaging or power distribution
- G06F1/181—Enclosures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/73—Anti-reflective coatings with specific characteristics
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/30—Aspects of methods for coating glass not covered above
- C03C2218/34—Masking
Definitions
- the present invention relates to a cover glass and a method for manufacturing the same, and more particularly, to a cover glass and a method for manufacturing the cover of a mobile terminal having a slim and improved aesthetics.
- the design is applied to the bezel area of the cover part, in which it is common to print black ink to cover the wiring of the display panel, and the like is applied to the bezel area by printing such as black or white, or more luxurious design.
- black or white or more luxurious design.
- most of the film is laminated with a hairline or a geometric pattern film.
- 1 is an exemplary view showing a configuration of a conventional cover glass.
- the conventional cover glass 10 is a polyethylene terephthalate (OCA) 30 attached to an optically clear adhesive (OCA) 30 on a lower surface of the glass substrate 20 ( PET (polyethylene terephthalate, hereinafter “PET”) film 40 is provided.
- PET polyethylene terephthalate, hereinafter “PET”
- a UV (ultraviolet) pattern 50 is applied on the PET film 40.
- the UV pattern 50 is coated with a layer 60 for realizing color by adjusting the wavelength of light, and a black matrix layer 70 is formed on the layer 60.
- the PET film 40 and the OCA 30 for adhering the PET film 40 to the glass substrate 20 are further provided, and as the UV pattern 50 is formed on the PET film 40,
- the conventional cover glass 10 has a problem that it is difficult to implement slimming.
- the UV pattern 50 is provided on the PET film 40, that is, the UV pattern 50 is embossed, the average until the light incident from the outside reaches the layer 60.
- the vertical distance L1 and the average vertical distance L1 when reflected from the layer 60 and emitted to the outside of the glass substrate 20 become long. Accordingly, light loss may occur in a process in which light is incident and is reflected and emitted to the layer 60.
- light incident to the layer 60 and light reflected and emitted from the layer 60 may be OCA ( 30) and the PET film 40, so the transmittance may also be reduced. This phenomenon can interfere with providing vivid colors and may cause a drop in aesthetics.
- the technical problem to be achieved by the present invention is to provide a cover glass and a manufacturing method thereof of a slim and improved aesthetics.
- an embodiment of the present invention a glass substrate; A pattern portion formed through etching on the glass substrate; And it provides a cover glass comprising a multi-layered thin film coated on the surface of the pattern portion.
- the surface of the pattern portion may be made of the inner surface of the glass substrate.
- the pattern portion may be formed in the bezel area of the glass substrate.
- it may further include a printing unit formed to cover the multilayer thin film.
- an embodiment of the present invention is a process for masking with acid resistant photoresist ink on a glass substrate; And forming a pattern portion by etching the glass substrate with a non-fluoric acid etchant.
- a process for forming a pattern portion by etching with the non-fluoric acid etchant is provided. Etching may be performed in the bezel area of the glass substrate.
- the step of masking the acid-resistant photoresist ink on the glass substrate, the process of applying an acid-resistant photoresist ink to the glass substrate to a thickness of 10 ⁇ 20 ⁇ m, the acid-resistant photoresist ink is The method may include disposing a mask pattern on the coated resist film, exposing the mask pattern, and developing the exposure pattern formed on the resist film.
- the etching in the process of forming the pattern portion by etching the glass substrate with a non-fluoric acid-based etching solution may be made by finely bubbling the non-fluoric acid-based etching solution.
- the non-fluoric acid etching solution may include 50 to 300 g / l ammonium fluoride, 1 to 30 g / l amine compound, 0.1 to 5 g / l anionic surfactant and water.
- the amine-based compound may include any one or more of monoethylamine, diethylamine and triethylamine.
- the anionic surfactant may include alkyl benzene sulfonate or sodium lauryl sulfate.
- an embodiment of the present invention is a process for masking the glass substrate; Etching the glass substrate to form a pattern portion; And it provides a method for producing a cover glass comprising the step of coating a multi-layered thin film in the pattern portion.
- the masking process may be performed using acid resistant photoresist ink, and the process of etching the glass substrate to form a pattern part may use a non-fluoric acid etchant.
- the step of masking the glass substrate, the step of applying the acid-resistant photoresist ink to the glass substrate to a thickness of 10 ⁇ 20 ⁇ m, and a resist film coated with the acid-resistant photoresist ink may include the process of arranging and exposing a mask pattern on the upper side of, and developing the exposure pattern formed on the resist film.
- the etching in the process of etching the glass substrate to form a pattern portion may be made by finely bubbling the non-fluoric acid-based etching solution.
- the non-fluoric acid etching solution may include 50 to 300 g / l ammonium fluoride, 1 to 30 g / l amine compound, 0.1 to 5 g / l anionic surfactant and water.
- the amine-based compound may include any one or more of monoethylamine, diethylamine and triethylamine.
- the anionic surfactant may include alkyl benzene sulfonate or sodium lauryl sulfate.
- the multilayer thin film may be formed by stacking one or more of a titanium oxide layer and a silicon oxide layer.
- the etching in the process of etching the glass substrate to form a pattern portion may be made in the bezel area of the glass substrate.
- the anti-fingerprint and anti-reflection thin film coating layer further formed on the back surface of the glass substrate surface formed with the pattern portion to a thickness of 1500 ⁇ 8000 ⁇ Can be.
- after the process of coating the multi-layered thin film on the pattern portion may further include a step of forming a printing unit to cover the multi-layered thin film.
- the glass substrate is etched to form the pattern portion directly on the glass substrate, the composition of the OCA, PET film and UV pattern is not required as in the prior art, so that the overall thickness of the cover glass can be made slim.
- the transmittance can also be improved.
- the pattern portion is formed inside the glass substrate to shorten the distance from the multilayer thin film to the outermost side of the glass substrate, it is possible to reduce the light loss in the glass substrate. It can provide more vivid and beautiful colors, which can enhance the aesthetics.
- masking with acid-resistant photoresist ink can increase the pattern precision of the resist film, and by increasing the duration of the pattern shape of the resist film during etching by performing an etching process with a non-fluoric acid-based etching solution And the etching rate is not too fast, so that fine pattern formation can be achieved.
- the pattern portion is directly formed on the glass substrate, since invasion, lifting, etc., which may occur in the conventional cover glass, is prevented at the source, durability may be improved.
- 1 is an exemplary view showing a configuration of a conventional cover glass.
- FIG. 2 is a plan view showing a cover glass according to an embodiment of the present invention.
- FIG 3 is a cross-sectional view showing a cover glass according to an embodiment of the present invention.
- Figure 4 is an exemplary process showing a method for manufacturing a cover glass according to an embodiment of the present invention.
- FIG 5 is an exemplary process showing a masking process of the manufacturing method of the cover glass according to an embodiment of the present invention.
- FIG. 2 is a plan view showing a cover glass according to an embodiment of the present invention
- Figure 3 is a cross-sectional view showing a cover glass according to an embodiment of the present invention.
- the cover glass 100 according to an embodiment of the present invention comprises a glass substrate 110, a pattern portion 120 and a multi-layered thin film (130) Can be.
- the glass substrate 110 protects the display panel inside the portable terminal and transmits the screen of the display panel.
- a wiring (not shown), a speaker (not shown), a camera (not shown), etc. of the display panel may be positioned.
- the glass substrate 110 may be cut to a predetermined size according to the intended use, and then the surface may be washed and dried.
- the glass substrate 110 may be a soda lime glass substrate, an alkali free glass substrate, or a tempered glass substrate.
- the pattern portion 120 may be formed on the glass substrate 110 by etching, and the pattern portion 120 may be formed in the bezel area 101. That is, the surface of the pattern portion 120 is made of the inner surface of the glass substrate 110. Accordingly, unlike in the conventional cover glass, the light incident on the glass substrate 110 is the OCA (30, FIG. 1), which is provided in the components of the other material (the conventional cover glass 10 (see FIG. 1), It is possible to reach the surface of the pattern portion 120 directly without passing through the PET film 40 (see FIG. 1) and the UV pattern 50 (see FIG. 1). That is, the distance to reach the pattern portion 120 is shorter than that of the conventional cover glass 10, and may have a high transmittance.
- the pattern portion 120 may be formed in various shapes and depths.
- the pattern unit 120 may have a shape such as a line or a figure, and the shapes may be repeatedly formed to represent a geometric pattern such as a hairline or a weave pattern.
- the pattern unit 120 may include shapes such as symbols, numbers, and letters. In this case, the pattern unit 120 may be formed to have different depths for each shape.
- the multilayer thin film 130 may be coated on the surface of the pattern portion 120.
- the multilayer thin film 130 may be formed by stacking one or more of a metal oxide layer and a nonmetal oxide layer.
- the multilayer thin film 130 may control various wavelengths of light flowing into the pattern unit 120, and thus, various colors may be realized on the glass substrate 110.
- the multilayer thin film 130 may include a titanium oxide layer and silicon oxide, and may be formed by stacking one or more of the titanium oxide layer and the silicon oxide layer.
- the printing unit 150 may be formed on the multilayer thin film 130, and the printing unit 150 may be formed to cover the multilayer thin film 130.
- the printing unit 150 blocks the light emitted from the display panel to display the display panel only at the center portion of the glass substrate 110, and reflects external incident light.
- the surface shape of the pattern unit 120 and the scattering and reflection by the multi-layered thin film 130 may show colorful and various three-dimensional effects.
- the cover glass 100 according to the present invention since the surface of the pattern portion 120 is made of the inner surface of the glass substrate 110, in other words, the pattern portion 120 to the inside of the glass substrate 110 Since it is formed, the average vertical distance L2 until the light incident from the outside reaches the multilayer thin film 130 may be shortened. That is, the cover glass 100 according to the present invention is compared with the average vertical distance L1 (see FIG. 1) until light incident from the outside in the conventional cover glass 10 reaches the layer 60 (see FIG. 1). The average vertical distance L2 until light incident from the outside reaches the multilayer thin film 130 may be much shorter. This means that the distance when the light reflected by the multilayer thin film 130 is emitted to the outside of the glass substrate 110 is shortened.
- the pattern unit 120 when the pattern unit 120 according to the present invention is formed of a geometric pattern such as a hairline or a weave pattern, the light reflected by the multilayer thin film 130 is emitted at various angles. Since the distance from the glass substrate 110 to the outermost side of the glass substrate 110 is short, the light loss in the glass substrate 110 can be reduced. This can provide more vivid and beautiful colors, thereby enhancing the aesthetics.
- the multilayer thin film 130 fills the pattern portion 120 for convenience, but the multilayer thin film 130 may be deposited to a very thin thickness, and thus, the pattern portion 120 may be formed on the surface of the pattern portion 120. It may be formed along the curvature of the).
- An anti-fingerprint and anti-reflection thin film coating layer 170 may be further formed on the rear surface of the glass substrate 110 on which the pattern portion 120 is formed.
- the thin film coating layer 170 may be formed to a thickness of 1500 ⁇ 8000 ⁇ .
- the thin film coating layer 170 may control the reflection of light to make the pattern clearer to realize more luxurious images.
- the thin film coating layer 170 may be coated by a microdroplet spray method.
- FIGS. 4 and 5 is an exemplary process showing a manufacturing method of a cover glass according to an embodiment of the present invention
- Figure 5 is an exemplary process showing a masking process of a manufacturing method of a cover glass according to an embodiment of the present invention.
- the manufacturing method of the cover glass according to an embodiment of the present invention has a step (S210) for masking the glass substrate.
- the process of masking the glass substrate (S210) may include a step (S211) of applying an acid resistant photoresist ink to the glass substrate to a thickness of 10 ⁇ 20 ⁇ m.
- the acid resistant photoresist ink may be one that does not react to an etchant for etching the glass.
- the acid resistant photoresist ink has resistance to etching and can withstand strong acids and hydrofluoric acid (HF) for a long time, and thus may be advantageous in forming a fine pattern.
- the acid resistant photoresist ink may further include at least one resin component of an epoxy resin, a silicone resin, an acrylic resin, or a urethane resin, and may further include a curing agent and a paint in this state.
- a hardening agent may be included in an appropriate ratio to prevent the case that the addition of a large amount causes the curing to proceed too quickly to prevent the photoresist ink from being formed in place, or the addition of a small amount may cause the curing to proceed too slowly and the desired pattern to come out of an oversize. have.
- the acid resistant photoresist ink may have sufficient adhesion with the glass substrate 110.
- Acid resistant photoresist inks include screen print, spin coat, painting, spray, dip coating, feeding and slit die coating
- the glass substrate 110 may be coated with a predetermined thickness by a method.
- masking the glass substrate (S210) includes placing a mask pattern on the upper side of the resist film to which the acid resistant photoresist ink is applied, exposing the mask pattern (S212), and developing the exposure pattern formed on the resist film ( S213) may be included.
- the light irradiated onto the mask pattern in the exposure process S212 may be UV light.
- a 2-7% solution of sodium carbonate at 45-60 ° C. may be used as the developer, and the resist film may be finely patterned by being dipped in the developer for 60-180 seconds and then dried after washing with water.
- the acid resistant photoresist ink may be a positive type that becomes soluble during exposure or a negative type that becomes insoluble.
- the etching solution used for etching the glass substrate may be a non-fluoric acid etching solution.
- the non-fluoric acid etchant may include 50 to 300 g / l ammonium fluoride (NH 4 F), 1 to 30 g / l amine compound, 0.1 to 5 g / l anionic surfactant, and water, and water may be a solvent.
- Such a non-fluoric acid-based etching solution not only controls the rapid reaction of the glass to the hydrofluoric acid, but also suppresses surface adsorption of the generated silicides to increase the penetration of the solution, thereby rapidly proceeding to fine pattern implementation.
- the conventional hydrofluoric acid etchant or the etching solution is pure hydrofluoric acid (HF), since the etching proceeds too quickly to form a fine pattern, it is possible to form the micropattern more effectively by using a non-sulphate-based etching solution.
- the amine compound may include any one of mono ethyl amine (MEA), diethyl amine (DEA), and triethyl amine (TEA), and such amine compound
- MEA mono ethyl amine
- DEA diethyl amine
- TEA triethyl amine
- Anionic surfactants may include alkyl benzene sulfonate or sodium lauryl sulfate. Such anionic surfactants can be used for the penetration and cleaning properties of the etching solution.
- the etching may be performed by bubbling the non-fluoric acid-based etching solution.
- the physical force can be evenly applied in the etchant so that rapid etching and cleaning can be performed efficiently.
- the pattern portion formed by etching on the glass substrate may be etched to have a depth of 10 ⁇ 30 ⁇ m.
- the microbubble device may be used in the present step (S220).
- Table 1 shows the results of comparative experiments of the etching rate of the non-fluoric acid-based etching solution and the conventional glass etching solution and the peelability of the resist film according to the manufacturing method of the cover glass according to an embodiment of the present invention.
- the same resist film patterned through various processes was used, and as the etching solution, a non-fluoric acid etching solution according to an embodiment of the present invention, hydrofluoric acid, an inorganic acid, and Conventional glass etchant was used as an additive.
- the non-fluoric acid etchant used in Example 1 was prepared by dissolving 50 to 300 g / l ammonium fluoride, 1 to 30 g / l amine compound and 0.1 to 5 g / l anionic surfactant in 1 liter of water.
- Conventional hydrofluoric acid etching solution used in Comparative Example 1 is composed of 50 to 350 g / l hydrofluoric acid (HF), 100 to 200 g / l of inorganic acids (sulfuric acid, hydrochloric acid, etc.) and water.
- the etching rate was 5-10 micrometer / min, and it was slower than 20-30 micrometer / min of the comparative example 1.
- Example 1 the peeling phenomenon of the resist film did not occur, but in Comparative Example 1, peeling phenomenon occurred in a part of the resist film. That is, in the case of using the non-fluoric acid etching solution according to an embodiment of the present invention, the etching rate is lower than that of the conventional hydrofluoric acid etching solution, so that it is easy to form a fine pattern, and during etching, there is no damage to the pattern of the resist film. It is possible to form a fine pattern.
- Table 2 shows the etching of a resist film masked with an acid resistant photoresist ink and a resist film masked with a conventional mask ink according to an embodiment of the present invention with a non-fluoric acid etchant according to an embodiment of the present invention. It shows the etching property of the pattern at the time of doing.
- the etching in Example 2 and the comparative example 2 was performed at normal temperature, the fine bubble generate
- the interface of the resist film masked with acid resistant photoresist ink and the interface etched on the glass substrate were clear, so that a fine pattern was well realized.
- the spacing of the fine patterns formed on the glass substrate was 30 to 80 ⁇ m.
- the washing process may be performed to remove the etching liquid remaining on the glass substrate by spraying pure water at a pressure of 1.0 ⁇ 2.0kg / cm2.
- the resist film remaining on the glass substrate surface is removed. Removal of the resist film can be separated by dipping in a solution of 3-10% sodium hydroxide at a constant temperature, and after the separation is washed with pure water.
- the etching in this process S220 may be performed in the bezel region of the glass substrate 110, and thus, the pattern portion formed through the present process S220 may be formed in the bezel region.
- the pattern portion may be a shape such as a line or a figure, and the shapes may be repeatedly formed to represent a geometric pattern such as a hairline or a weave pattern.
- the pattern portion formed in this way can increase the three-dimensional feeling and the degree of change than the pattern obtained by laminating a conventional printing or film, it is possible to implement a more excellent decorative effect, it can provide a better aesthetic sense.
- the pattern portion may include a logo shape such as a symbol, a number, a letter, or the like. In this case, the pattern portion may have a different depth for each type of pattern, for example, a geometric pattern and a logo.
- the glass substrate is etched to form the pattern portion directly on the glass substrate, so that the structure of the OCA, PET film and UV pattern is not required as in the prior art, so that the overall thickness of the cover glass becomes slim. And transmittance can be improved.
- the pattern portion is directly formed on the glass substrate, invasion, lifting, and the like, which may occur in the conventional cover glass, do not occur at the source, so durability may be improved.
- a process (S230) of coating a multi-layered thin film on the pattern portion may be performed.
- the multilayer thin film may be formed on the surface of the pattern portion, and thus, the multilayer thin film may be located inside the glass substrate.
- the multilayer thin film may be formed by stacking one or more of a metal oxide layer and a nonmetal oxide layer.
- the metal oxide layer may be a titanium oxide layer and the nonmetal oxide layer may be a silicon oxide layer.
- the multilayer thin film may control various wavelengths of light flowing into the pattern portion, and thus, various colors may be realized on the glass substrate.
- the process of forming the printing part to cover the multilayer thin film may be further performed.
- the process of forming the printing part may be performed in the bezel area, and the printing part may be formed to cover the multilayer thin film formed in the bezel area.
- the printing unit may be a black matrix layer printed using black ink, and the black ink may include an organic compound such as a metal, an inorganic compound such as a metal oxide, or a polymer resin.
- the printing unit blocks light emitted from the display panel so that the display panel is displayed only at the center of the glass substrate, and reflects external incident light.
- the anti-fingerprint and anti-reflection thin film coating layer 170 on the back surface of the glass substrate 110 on which the pattern portion 120 is formed is 1500 to 8000 ⁇ . It may be further formed in thickness.
- the thin film coating layer 170 may control the reflection of light to make the pattern clearer to realize more luxurious images.
- the thin film coating layer 170 may be coated by a microdroplet spray method.
Abstract
Description
비교항목 | 실시예1 | 비교예1 | 비고 |
에칭 속도(㎛/min) | 5~10 | 20~30 | 상온에서 비교 |
레지스트 필름의 내에칭성 | 박리현상 미발생 | 박리현상 일부 발생 |
비교항목 | 실시예2 | 비교예2 |
미세패턴 간격 | 30~80㎛ | 100㎛ 이상 |
에칭부위 경계 | 에칭 후 경계 부위의 박리현상 미발생 | 에칭 후 경계 부위의 부분 박리 현상 발생 |
Claims (22)
- 유리기판;상기 유리기판에 에칭을 통해 형성되는 패턴부; 그리고상기 패턴부의 표면에 코팅되는 다층(multi-layered) 박막을 포함하여 이루어지는 커버글라스.
- 제1항에 있어서,상기 패턴부의 표면은 상기 유리기판의 내면으로 이루어지는 것인 커버글라스.
- 제1항에 있어서,상기 패턴부는 상기 유리기판의 베젤 영역 내에 형성되는 것인 커버글라스.
- 제1항에 있어서,상기 다층 박막을 덮도록 형성되는 인쇄부를 더 포함하는 커버글라스.
- 유리기판에 내산성 포토레지스트 잉크로 마스킹을 하는 공정; 그리고상기 유리기판을 비불산계 에칭액으로 에칭하여 패턴부를 형성하는 공정을 포함하여 이루어지는 커버글라스의 제조 방법.
- 제5항에 있어서,상기 비불산계 에칭액으로 에칭하여 패턴부를 형성하는 공정에서의 에칭은 상기 유리기판의 베젤 영역 내에서 이루어지는 것인 커버글라스의 제조 방법.
- 제5항에 있어서,상기 유리기판에 내산성 포토레지스트 잉크로 마스킹을 하는 공정은,상기 유리기판에 내산성 포토레지스트 잉크를 10~20㎛ 두께로 도포하는 공정과,상기 내산성 포토레지스트 잉크가 도포된 레지스트 필름의 상측에 마스크 패턴을 배치하고, 노광하는 공정과,상기 레지스트 필름에 형성된 노광 패턴을 현상하는 공정을 포함하는 것인 커버글라스의 제조 방법.
- 제5항에 있어서,상기 유리기판을 비불산계 에칭액으로 에칭하여 패턴부를 형성하는 공정에서 상기 에칭은 상기 비불산계 에칭액을 미세 버블링하여 이루어지는 것인 커버글라스의 제조 방법.
- 제5항에 있어서,상기 비불산계 에칭액은 불화암모늄 50~300g/l, 아민계 화합물 1~30g/l, 음이온 계면활성제 0.1~5g/l 및 물을 포함하는 것인 커버글라스의 제조 방법.
- 제9항에 있어서,상기 아민계 화합물은 모노에틸아민, 디에틸아민 및 트리에틸아민 중 어느 하나 이상을 포함하는 것인 커버글라스의 제조 방법.
- 제9항에 있어서,상기 음이온 계면활성제는 알킬 벤젠 술폰산염 또는 소듐 라우릴 설페이트를 포함하는 것인 커버글라스의 제조 방법.
- 유리기판에 마스킹을 하는 공정;상기 유리기판을 에칭하여 패턴부를 형성하는 공정; 그리고상기 패턴부에 다층(multi-layered) 박막을 코팅하는 공정을 포함하여 이루어지는 커버글라스의 제조 방법.
- 제12항에 있어서,상기 유리기판에 마스킹을 하는 공정은 내산성 포토레지스트 잉크를 이용하고, 상기 유리기판을 에칭하여 패턴부를 형성하는 공정은 비불산계 에칭액을 이용하는 커버글라스의 제조 방법.
- 제13항에 있어서,상기 유리기판에 마스킹을 하는 공정은,상기 유리기판에 상기 내산성 포토레지스트 잉크를 10~20㎛ 두께로 도포하는 공정과,상기 내산성 포토레지스트 잉크가 도포된 레지스트 필름의 상측에 마스크 패턴을 배치하고, 노광하는 공정과,상기 레지스트 필름에 형성된 노광 패턴을 현상하는 공정을 포함하는 것인 커버글라스의 제조 방법.
- 제13항에 있어서,상기 유리기판을 에칭하여 패턴부를 형성하는 공정에서 상기 에칭은 상기 비불산계 에칭액을 미세 버블링하여 이루어지는 것인 커버글라스의 제조 방법.
- 제13항에 있어서,상기 비불산계 에칭액은 불화암모늄 50~300g/l, 아민계 화합물 1~30g/l, 음이온 계면활성제 0.1~5g/l 및 물을 포함하는 것인 커버글라스의 제조 방법.
- 제16항에 있어서,상기 아민계 화합물은 모노에틸아민, 디에틸아민 및 트리에틸아민 중 어느 하나 이상을 포함하는 것인 커버글라스의 제조 방법.
- 제16항에 있어서,상기 음이온 계면활성제는 알킬 벤젠 술폰산염 또는 소듐 라우릴 설페이트를 포함하는 것인 커버글라스의 제조 방법.
- 제12항에 있어서,상기 다층 박막은, 티타늄 산화물 층 및 실리콘 산화물 층 중 하나 이상이 적층되어 이루어지는 것인 커버글라스의 제조 방법.
- 제12항에 있어서,상기 유리기판을 에칭하여 패턴부를 형성하는 공정에서의 에칭은 상기 유리기판의 베젤 영역 내에서 이루어지는 것인 커버글라스의 제조 방법.
- 제12항에 있어서,상기 유리기판을 에칭하여 패턴부를 형성하는 공정 이후에, 상기 패턴부가 형성된 상기 유리기판 면의 배면에 내지문 및 반사방지용 박막 코팅층이 1500~8000Å의 두께로 더 형성되는 것인 커버글라스의 제조방법.
- 제12항에 있어서,상기 패턴부에 다층 박막을 코팅하는 공정 이후에, 상기 다층 박막을 덮도록 인쇄부를 형성하는 공정을 더 포함하는 것인 커버글라스의 제조방법.
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JP2015561257A JP2016513612A (ja) | 2013-03-05 | 2013-11-29 | カバーガラス及びその製造方法 |
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- 2013-11-29 CN CN201620233278.8U patent/CN205933632U/zh not_active Expired - Fee Related
- 2013-11-29 CN CN201620232714.XU patent/CN205933631U/zh not_active Expired - Fee Related
- 2013-11-29 JP JP2015561257A patent/JP2016513612A/ja active Pending
- 2013-11-29 US US14/773,620 patent/US20160016845A1/en not_active Abandoned
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- 2013-11-29 WO PCT/KR2013/011028 patent/WO2014137058A1/ko active Application Filing
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EP3062190A1 (en) * | 2015-02-27 | 2016-08-31 | Samsung Electronics Co., Ltd. | Electronic device with a transparent surface member |
KR20160105110A (ko) * | 2015-02-27 | 2016-09-06 | 삼성전자주식회사 | 전자 장치 |
CN105929892A (zh) * | 2015-02-27 | 2016-09-07 | 三星电子株式会社 | 电子设备 |
US10448529B2 (en) | 2015-02-27 | 2019-10-15 | Samsung Electronics Co., Ltd. | Electronic device |
CN105929892B (zh) * | 2015-02-27 | 2020-01-10 | 三星电子株式会社 | 电子设备 |
KR102384279B1 (ko) * | 2015-02-27 | 2022-04-07 | 삼성전자주식회사 | 전자 장치 |
WO2016159422A1 (ko) * | 2015-04-03 | 2016-10-06 | 이엘케이 주식회사 | 전자기기용 투명커버 |
WO2017141519A1 (ja) * | 2016-02-17 | 2017-08-24 | 日本電気硝子株式会社 | 耐熱ガラス |
JP2017145168A (ja) * | 2016-02-17 | 2017-08-24 | 日本電気硝子株式会社 | 耐熱ガラス |
CN108541252A (zh) * | 2016-02-17 | 2018-09-14 | 日本电气硝子株式会社 | 耐热玻璃 |
CN114501872A (zh) * | 2020-10-23 | 2022-05-13 | 深圳市万普拉斯科技有限公司 | 盖板的纹理制备方法、盖板、电子设备 |
Also Published As
Publication number | Publication date |
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KR20160075408A (ko) | 2016-06-29 |
KR101707429B1 (ko) | 2017-02-17 |
KR20160075411A (ko) | 2016-06-29 |
KR101707425B1 (ko) | 2017-02-17 |
KR20160075407A (ko) | 2016-06-29 |
KR101787570B1 (ko) | 2017-11-15 |
CN205188130U (zh) | 2016-04-27 |
CN205933631U (zh) | 2017-02-08 |
CN205942505U (zh) | 2017-02-08 |
KR20170019406A (ko) | 2017-02-21 |
KR20160075409A (ko) | 2016-06-29 |
US20160016845A1 (en) | 2016-01-21 |
JP2016513612A (ja) | 2016-05-16 |
KR20140109341A (ko) | 2014-09-15 |
KR20160075406A (ko) | 2016-06-29 |
KR101336934B1 (ko) | 2013-12-03 |
KR101336936B1 (ko) | 2013-12-03 |
KR101707420B1 (ko) | 2017-02-17 |
KR20160075410A (ko) | 2016-06-29 |
KR101706562B1 (ko) | 2017-02-16 |
CN205933632U (zh) | 2017-02-08 |
KR101707421B1 (ko) | 2017-02-17 |
KR101336935B1 (ko) | 2013-12-03 |
KR101707422B1 (ko) | 2017-02-17 |
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