WO2017164485A1 - Cover window for display device and manufacturing method therefor - Google Patents

Cover window for display device and manufacturing method therefor Download PDF

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Publication number
WO2017164485A1
WO2017164485A1 PCT/KR2016/014415 KR2016014415W WO2017164485A1 WO 2017164485 A1 WO2017164485 A1 WO 2017164485A1 KR 2016014415 W KR2016014415 W KR 2016014415W WO 2017164485 A1 WO2017164485 A1 WO 2017164485A1
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WO
WIPO (PCT)
Prior art keywords
layer
coating layer
display
display device
cover
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Application number
PCT/KR2016/014415
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French (fr)
Korean (ko)
Inventor
김경택
이승훈
장동식
Original Assignee
(주)엘지하우시스
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Publication of WO2017164485A1 publication Critical patent/WO2017164485A1/en

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present invention relates to a cover window for a display device and a method of manufacturing the same for mounting a display device to protect the display panel.
  • the cover window serves to protect a display panel of a display device such as a mobile phone or a navigation device.
  • the cover window has a high hardness to prevent scratches, a high strength to prevent breakage, and a quality of the display device. Good optical properties are required.
  • a cover window is required to have a curved shape correspondingly.
  • the conventional cover window is mostly formed of tempered glass has a problem that is difficult to manufacture in a curved shape.
  • the tempered glass can be easily broken by an external impact, it is necessary to develop a cover window made of a material having excellent strength while being manufactured in various forms.
  • An object of the present invention is to provide a cover window for a display device and a method of manufacturing the same, which can be manufactured in various forms such as curved shapes by forming a hard coating layer and a display cover layer with a lightweight and easily molded resin material.
  • the cover window for a display device for achieving the above object includes a print layer, a hard coating layer, a display cover layer, and an optical coating layer.
  • the display layer is formed at the center of the printed layer.
  • the hard coat layer is disposed on the printed layer to protect the printed layer and is formed of a resin material.
  • the display cover layer is disposed on the hard coating layer and is formed of a resin material.
  • the optical coating layer is disposed on the display cover layer, and has an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-finger (AF) coating layer for fingerprint prevention. At least one of the.
  • AG anti-glare
  • AR anti-reflective
  • AF anti-finger
  • a method of manufacturing a cover window for a display device includes forming a printed layer, forming a hard coating layer, forming a display cover layer, and forming an optical coating layer.
  • Forming the printed layer forms a printed layer having a display hole in the center thereof.
  • Forming the hard coating layer forms a hard coating layer formed of a resin material on top of the printing layer to protect the printing layer.
  • Forming the display cover layer forms a display cover layer formed of a resin material on top of the hard coating layer.
  • the forming of the optical coating layer may include an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-fingering (AF) for fingerprint prevention on the display cover layer.
  • An optical coating layer including at least one or more of the coating layers is formed.
  • the hard coating layer and the display cover layer are formed of a resin material which is light and easy to be molded, and thus can be manufactured in various forms such as curved surfaces.
  • the display cover layer through injection compression molding it is possible to minimize the birefringence generated during the injection to improve the light transmittance.
  • an anti-glare (AG) coating layer for blocking light refraction an anti-reflective (AR) coating layer for preventing reflection of light
  • an anti-finger (AF) coating layer for anti-fingerprint on the display cover layer By arranging the optical coating layer comprising a, it is possible to improve the usability of the display device.
  • FIG. 1 is a perspective view of a cover window for a display device according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the cover window for the display device shown in FIG. 1.
  • FIG. 2 is an exploded perspective view of the cover window for the display device shown in FIG. 1.
  • FIG. 3 is a block diagram of a method of manufacturing a cover window for a display device according to an embodiment of the present invention.
  • FIG. 1 is a perspective view of a cover window for a display device according to an embodiment of the present invention
  • Figure 2 is an exploded perspective view of the cover window for the display device shown in FIG.
  • the cover window 100 for the display device is mounted on the display device to protect the display panel.
  • the cover window 100 for a display device includes a print layer 110, a hard coating layer 120, a display cover layer 130, and an optical coating layer 140. .
  • the print layer 110 is a place where a manufacturer's logo or color is painted, and a display hole 111 is formed in the center. As such, as the display hole 111 is formed in the print layer 110, the image output from the display apparatus may be checked through the display hole 111.
  • the hard coating layer 120 is disposed on the printing layer 110 to protect the printing layer 110, and is formed of a resin material. More specifically, the hard coating layer 120 may be formed to a thickness of 5 ⁇ 30 ⁇ m. This is because it is difficult to secure the surface hardness when the thickness of the hard coating layer 120 is less than 5 ⁇ m, and it is advantageous to secure the surface hardness when the thickness exceeds 30 ⁇ m, but there is a risk of cracking due to external impact. to be.
  • the hard coating layer 120 may be made of urethane acrylate (polyurethane acrylate) or polyester acrylate (Polyester acrylate) -based high-functional resin.
  • Urethane acrylate oligomer may be formed by reaction of an isocyanate group with a hydroxyl group of an acrylic or methacryl monomer.
  • the polyester acrylate oligomer may use a type in which a saturated polyester resin is acrylated.
  • the display cover layer 130 is disposed on the hard coating layer 120 and may be formed of a resin material. More specifically, the display cover layer 130 may be formed to a thickness of 5 ⁇ 20 ⁇ m. This is because when the thickness of the display cover layer 130 is less than 5 ⁇ m, it is difficult to secure surface hardness, and when the thickness exceeds 20 ⁇ m, cracks may occur due to external impact.
  • the display cover layer 130 is formed of a resin material as described above, the display cover layer 130 is lighter than the display cover layer formed of tempered glass and can be easily molded to manufacture the display cover layer 130 in various forms such as curved surfaces.
  • the optical coating layer 140 is disposed on the display cover layer 130, and has an anti-glare (AG) coating layer 141 for blocking light refraction, an anti-reflective (AR) coating layer 142 for preventing reflection light, and At least one or more of the anti-finger (AF) coating layer 143 for anti-fingerprint.
  • AG anti-glare
  • AR anti-reflective
  • AF anti-finger
  • the AG (Anti-Glare) coating layer 141 is to prevent glare by blocking the light refraction, it can be formed using the principle of the flat plate and the pattern engraving technology.
  • the AR (Anti-Reflective) coating layer 142 is for preventing the reflection of light, it is possible to further improve the transparency by lowering the refractive index by lowering the refractive index.
  • the AF (Anti-Finger) coating layer 143 is designed to prevent fingerprints, and may be formed using a method of increasing the wettability of the hard coat agent so that the wettability does not stand out even if the fingerprint component is attached.
  • the optical coating layer 140 may be formed to a thickness of 5 ⁇ 50 ⁇ m. This is because when the thickness of the optical coating layer 140 is less than 5 ⁇ m, it is difficult to secure the surface hardness, and when the thickness exceeds 50 ⁇ m, a crack may occur due to an external impact.
  • the display cover layer 130 may be injection compression molding.
  • the display cover layer 130 may be formed by injection-filling a resin into a mold including an upper mold and a lower mold, and then applying a compressive force to a slightly open upper mold to completely close and cure the mold.
  • dimensional accuracy is high, and birefringence generated during injection can be minimized.
  • the display cover layer 130 may be formed of polycarbonate (PC: PolyCarbonate) or polymethyl methacrylate (PMMA: PolyMethylMethacrylate).
  • Polycarbonate (PC: PolyCarbonate) is one of thermoplastics, and has heat resistance, visibility, and transparency, and has excellent electrical insulation and impact resistance. In particular, having a shock degree of about 150 times or more than that of tempered glass can improve durability when manufacturing the display cover layer 130 with a polycarbonate material.
  • Polymethyl methacrylate (PMMA: PolyMethylMethacrylate) has advantages such as transparency, weather resistance, and colorability. In particular, having a light transmittance of about 97%, it is possible to ensure excellent visibility when manufacturing the display cover layer 130 with a polymethyl methacrylate material.
  • the cover window 100 for the display device may be manufactured in various forms such as a curved shape by forming the hard coating layer 120 and the display cover layer 130 with a light and easy resin molding material. .
  • the display cover layer 130 through injection compression molding it is possible to minimize the birefringence generated during the injection to improve the light transmittance.
  • the optical coating layer 140 including at least one of the anti-finger coating layer 143 it is possible to improve the usability of the display device.
  • FIG. 3 is a block diagram of a method of manufacturing a cover window for a display device according to an embodiment of the present invention.
  • the method 200 for manufacturing a cover window for a display device includes forming a printed layer 210, forming a hard coating layer 220, and forming a display cover layer ( 230, and forming an optical coating layer (240).
  • the printed layer 110 having the display hole 111 formed therein is formed.
  • the print layer 110 is disposed between the display panel (not shown) and the hard coating layer 120 can be fixed to the display device without a separate adhesive.
  • the hard coating layer 120 formed of a resin material is formed on the printing layer 110 to protect the printing layer 110.
  • the hard coating layer 120 may be formed by injecting a urethane acrylate (polyurethane acrylate) and polyester acrylate-based high-functional resin. At this time, the hard coating layer 120 is preferably formed with a thickness of 5 ⁇ 30 ⁇ m to secure the surface hardness, and to prevent the occurrence of cracks due to external impact.
  • the display cover layer 130 formed of a resin material is formed on the hard coating layer 120.
  • the display cover layer 130 may be formed by injection compression molding.
  • the display cover layer 130 may be formed by injection-filling a resin into a mold including an upper mold and a lower mold, and then applying a compressive force to a slightly open upper mold to completely close and cure the mold.
  • the display cover layer 130 is formed through injection compression molding as described above, dimensional accuracy is high, and birefringence generated during injection can be minimized.
  • the display cover layer 130 is preferably formed to a thickness of 5 ⁇ 20 ⁇ m in order to secure the surface hardness, and to prevent the occurrence of cracks due to external impact.
  • the forming of the optical coating 240 may include an anti-glare (AG) coating layer 141 for blocking light refraction and an anti-reflective (AR) coating layer 142 for preventing reflection light on the display cover layer 130. And an optical coating layer 140 including at least one or more of an anti-finger (AF) coating layer 143 for fingerprint prevention.
  • AG anti-glare
  • AR anti-reflective
  • AF anti-finger
  • the optical coating layer 140 may be formed by spray coating or flow coating the surface of the display coating layer 130. This is because, when the optical coating layer 140 is formed by an adhesive method, it may be difficult to form the optical coating layer 140 on the surface of the display cover layer 130 when the display cover layer 130 has a curved shape. to be.
  • the optical coating layer 140 is preferably formed to a thickness of 5 ⁇ 50 ⁇ m in order to secure the surface hardness, and prevent the occurrence of cracks due to external impact.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Laminated Bodies (AREA)
  • Surface Treatment Of Optical Elements (AREA)

Abstract

The present invention relates to a cover window for a display device, capable of being manufactured into various forms. The cover window for a display device comprises a print layer, a hard coating layer, a display cover layer and an optical coating layer. The print layer has a display hole formed at the center thereof. The hard coating layer is disposed at the upper part of the print layer so as to protect the print layer and formed from a resin material. The display cover layer is disposed at the upper part of the hard coating layer and formed from a resin material. The optical coating layer is disposed at the upper part of the display cover layer, and includes at least one of an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing light reflection, and an anti-finger (AF) coating layer for preventing fingerprints.

Description

디스플레이 장치용 커버 윈도우 및 그의 제조방법Display window for display device and manufacturing method thereof
본 발명은 디스플레이 장치에 장착되어 디스플레이 패널을 보호하기 위한 디스플레이 장치용 커버 윈도우 및 그의 제조방법에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover window for a display device and a method of manufacturing the same for mounting a display device to protect the display panel.
일반적으로, 커버 윈도우는 휴대 전화, 내비게이션 등과 같은 디스플레이 장치의 디스플레이 패널을 보호하는 역할을 하는 것으로, 스크래치를 방지하기 위한 고경도와, 파손을 방지하기 위한 고강도와, 디스플레이 장치의 화질을 훼손하지 않기 위한 우수한 광학적 특성이 요구된다. In general, the cover window serves to protect a display panel of a display device such as a mobile phone or a navigation device. The cover window has a high hardness to prevent scratches, a high strength to prevent breakage, and a quality of the display device. Good optical properties are required.
특히, 최근에는 곡면형 디스플레이 패널이 개발됨에 따라 커버 윈도우도 그에 대응하여 곡면형상을 가질 것이 요구되고 있다. In particular, as a curved display panel is recently developed, a cover window is required to have a curved shape correspondingly.
그러나, 종래의 커버 윈도우는 대부분이 강화유리로 형성되어 있어 곡면형상으로 제조가 어려운 문제가 있었다. 또한, 강화유리는 외부 충격에 의해 쉽게 깨질 수 있으므로, 다양한 형태로 제조 가능하면서도 강도가 우수한 소재로 이루어진 커버 윈도우의 개발을 필요로 한다. However, the conventional cover window is mostly formed of tempered glass has a problem that is difficult to manufacture in a curved shape. In addition, since the tempered glass can be easily broken by an external impact, it is necessary to develop a cover window made of a material having excellent strength while being manufactured in various forms.
본 발명의 과제는 하드 코팅층과 디스플레이 커버층을 가볍고 성형이 용이한 수지 소재로 형성함으로써, 곡면 형상과 같이 다양한 형태로 제조 가능한 디스플레이 장치용 커버 윈도우 및 그의 제조방법을 제공함에 있다. DISCLOSURE OF THE INVENTION An object of the present invention is to provide a cover window for a display device and a method of manufacturing the same, which can be manufactured in various forms such as curved shapes by forming a hard coating layer and a display cover layer with a lightweight and easily molded resin material.
상기의 과제를 달성하기 위한 본 발명에 따른 디스플레이 장치용 커버 윈도우는 인쇄층과, 하드 코팅층과, 디스플레이 커버층, 및 광학 코팅층을 포함한다. 인쇄층은 중앙에 디스플레이 홀이 형성된다. 하드 코팅층은 인쇄층의 상부에 배치되어 인쇄층을 보호하며, 수지 소재로 형성된다. 디스플레이 커버층은 하드 코팅층의 상부에 배치되며, 수지 소재로 형성된다. 광학 코팅층은 디스플레이 커버층의 상부에 배치되며, 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층과, 지문 방지를 위한 AF(Anti-Finger) 코팅층 중 적어도 하나 이상을 포함한다. The cover window for a display device according to the present invention for achieving the above object includes a print layer, a hard coating layer, a display cover layer, and an optical coating layer. The display layer is formed at the center of the printed layer. The hard coat layer is disposed on the printed layer to protect the printed layer and is formed of a resin material. The display cover layer is disposed on the hard coating layer and is formed of a resin material. The optical coating layer is disposed on the display cover layer, and has an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-finger (AF) coating layer for fingerprint prevention. At least one of the.
디스플레이 장치용 커버 윈도우의 제조방법은 인쇄층을 형성하는 단계와, 하드 코팅층을 형성하는 단계와, 디스플레이 커버층을 형성하는 단계, 및 광학 코팅층을 형성하는 단계를 포함한다. 인쇄층을 형성하는 단계는 중앙에 디스플레이 홀이 형성된 인쇄층을 형성한다. 하드 코팅층을 형성하는 단계는 인쇄층을 보호하도록 인쇄층의 상부에 수지 소재로 형성된 하드 코팅층을 형성한다. 디스플레이 커버층을 형성하는 단계는 하드 코팅층의 상부에 수지 소재로 형성된 디스플레이 커버층을 형성한다. 광학 코팅층을 형성하는 단계는 디스플레이 커버층의 상부에 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층과, 지문 방지를 위한 AF(Anti-Finger) 코팅층 중 적어도 하나 이상을 포함하는 광학 코팅층을 형성한다. A method of manufacturing a cover window for a display device includes forming a printed layer, forming a hard coating layer, forming a display cover layer, and forming an optical coating layer. Forming the printed layer forms a printed layer having a display hole in the center thereof. Forming the hard coating layer forms a hard coating layer formed of a resin material on top of the printing layer to protect the printing layer. Forming the display cover layer forms a display cover layer formed of a resin material on top of the hard coating layer. The forming of the optical coating layer may include an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-fingering (AF) for fingerprint prevention on the display cover layer. An optical coating layer including at least one or more of the coating layers is formed.
본 발명에 따르면, 하드 코팅층과 디스플레이 커버층을 가볍고 성형이 용이한 수지 소재로 형성함으로써, 곡면 형상과 같이 다양한 형태로 제조할 수 있게 된다. According to the present invention, the hard coating layer and the display cover layer are formed of a resin material which is light and easy to be molded, and thus can be manufactured in various forms such as curved surfaces.
또한, 디스플레이 커버층을 사출압축 성형을 통해 제조함으로써 사출시 발생하는 복굴절을 최소화하여 광투과율을 향상시킬 수 있게 된다. In addition, by manufacturing the display cover layer through injection compression molding it is possible to minimize the birefringence generated during the injection to improve the light transmittance.
아울러, 디스플레이 커버층의 상부에 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층과, 지문방지를 위한 AF(Anti-Finger) 코팅층 중 적어도 하나 이상을 포함하는 광학 코팅층을 배치시킴으로써, 디스플레이 장치의 사용성을 향상시킬 수 있게 된다. In addition, at least one of an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-finger (AF) coating layer for anti-fingerprint on the display cover layer. By arranging the optical coating layer comprising a, it is possible to improve the usability of the display device.
도 1은 본 발명의 일 실시예에 따른 디스플레이 장치용 커버 윈도우의 사시도. 1 is a perspective view of a cover window for a display device according to an embodiment of the present invention.
도 2는 도 1에 도시된 디스플레이 장치용 커버 윈도우의 분해 사시도. FIG. 2 is an exploded perspective view of the cover window for the display device shown in FIG. 1. FIG.
도 3은 본 발명의 일 실시예에 따른 디스플레이 장치용 커버 윈도우의 제조방법에 대한 블록선도. 3 is a block diagram of a method of manufacturing a cover window for a display device according to an embodiment of the present invention.
이하 첨부된 도면을 참조하여, 바람직한 실시예에 따른 디스플레이 장치용 커버 윈도우 및 그의 제조방법에 대해 상세히 설명하면 다음과 같다. 여기서, 동일한 구성에 대해서는 동일부호를 사용하며, 반복되는 설명, 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다. 발명의 실시형태는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다. Hereinafter, a cover window for a display device and a method of manufacturing the same according to a preferred embodiment will be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same configurations, and detailed descriptions of well-known functions and configurations that may unnecessarily obscure the repeated description and the subject matter of the invention will be omitted. Embodiments of the invention are provided to more completely describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.
도 1은 본 발명의 일 실시예에 따른 디스플레이 장치용 커버 윈도우의 사시도이고, 도 2는 도 1에 도시된 디스플레이 장치용 커버 윈도우의 분해 사시도이다. 여기서, 디스플레이 장치용 커버 윈도우(100)는 디스플레이 장치에 장착되어 디스플레이 패널을 보호하는 역할을 수행한다. 1 is a perspective view of a cover window for a display device according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the cover window for the display device shown in FIG. Here, the cover window 100 for the display device is mounted on the display device to protect the display panel.
도 1 내지 도 2에 도시된 바와 같이, 디스플레이 장치용 커버 윈도우(100)는 인쇄층(110)과, 하드 코팅층(120)과, 디스플레이 커버층(130), 및 광학 코팅층(140)을 포함한다. As shown in FIGS. 1 and 2, the cover window 100 for a display device includes a print layer 110, a hard coating layer 120, a display cover layer 130, and an optical coating layer 140. .
인쇄층(110)은 제조사의 로고나 색상이 도색되는 곳으로, 중앙에 디스플레이 홀(111)이 형성된다. 이와 같이, 인쇄층(110)에 디스플레이 홀(111)이 형성됨에 따라, 디스플레이 홀(111)을 통해 디스플레이 장치로부터 출력되는 영상을 확인할 수 있게 된다. The print layer 110 is a place where a manufacturer's logo or color is painted, and a display hole 111 is formed in the center. As such, as the display hole 111 is formed in the print layer 110, the image output from the display apparatus may be checked through the display hole 111.
하드 코팅층(120)은 인쇄층(110)의 상부에 배치되어 인쇄층(110)을 보호하며, 수지 소재로 형성된다. 보다 구체적으로, 하드 코팅층(120)은 5 ~ 30㎛의 두께로 형성될 수 있다. 이는 하드 코팅층(120)의 두께가 5㎛ 미만일 경우 표면경도를 확보하기 어렵고, 두께가 30㎛를 초과할 경우 표면경도의 확보에는 유리하나 외부의 충격으로 인한 크랙(crack)이 발생할 우려가 있기 때문이다. The hard coating layer 120 is disposed on the printing layer 110 to protect the printing layer 110, and is formed of a resin material. More specifically, the hard coating layer 120 may be formed to a thickness of 5 ~ 30㎛. This is because it is difficult to secure the surface hardness when the thickness of the hard coating layer 120 is less than 5㎛, and it is advantageous to secure the surface hardness when the thickness exceeds 30㎛, but there is a risk of cracking due to external impact. to be.
하드 코팅층(120)은 우레탄 아크릴레이트(Urethane Acrylate)나 폴리에스터 아크릴레이트(Polyester acrylate)계열의 고관능 수지로 이루어질 수 있다. The hard coating layer 120 may be made of urethane acrylate (polyurethane acrylate) or polyester acrylate (Polyester acrylate) -based high-functional resin.
우레탄 아크릴레이트 올리고머(Urethane Acrylate oligomer)는 이소시아네이트 그룹(Isocyanate group)과 아크릴(Acrylic) 또는 메타크릴 모노머(Methacrylic monomer)의 하이드록실 그룹(Hydroxyl group)과의 반응으로 형성할 수 있다. 그리고, 폴리에스터 아크릴레이트 올리고머(Polyester acrylate oligomer)는 포화 폴리에스터 레진(polyester resin)을 아크릴레이트화 시킨 타입을 사용할 수 있다. Urethane acrylate oligomer may be formed by reaction of an isocyanate group with a hydroxyl group of an acrylic or methacryl monomer. In addition, the polyester acrylate oligomer may use a type in which a saturated polyester resin is acrylated.
디스플레이 커버층(130)은 하드 코팅층(120)의 상부에 배치되며, 수지 소재로 형성될 수 있다. 보다 구체적으로, 디스플레이 커버층(130)은 5 ~ 20㎛의 두께로 형성될 수 있다. 이는 디스플레이 커버층(130)의 두께가 5㎛ 미만일 경우 표면경도를 확보하기 어렵고, 두께가 20㎛를 초과할 경우 외부의 충격으로 인한 크랙(crack)이 발생할 우려가 있기 때문이다. The display cover layer 130 is disposed on the hard coating layer 120 and may be formed of a resin material. More specifically, the display cover layer 130 may be formed to a thickness of 5 ~ 20㎛. This is because when the thickness of the display cover layer 130 is less than 5 μm, it is difficult to secure surface hardness, and when the thickness exceeds 20 μm, cracks may occur due to external impact.
이처럼 디스플레이 커버층(130)이 수지 소재로 형성됨에 따라, 강화유리로 형성된 디스플레이 커버층보다 가볍고, 성형이 용이하여 곡면 형상과 같이 다양한 형태로 디스플레이 커버층(130)을 제조할 수 있게 된다. As the display cover layer 130 is formed of a resin material as described above, the display cover layer 130 is lighter than the display cover layer formed of tempered glass and can be easily molded to manufacture the display cover layer 130 in various forms such as curved surfaces.
광학 코팅층(140)은 디스플레이 커버층(130)의 상부에 배치되며, 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층(141)과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층(142)과, 지문방지를 위한 AF(Anti-Finger) 코팅층(143) 중 적어도 하나 이상을 포함한다. The optical coating layer 140 is disposed on the display cover layer 130, and has an anti-glare (AG) coating layer 141 for blocking light refraction, an anti-reflective (AR) coating layer 142 for preventing reflection light, and At least one or more of the anti-finger (AF) coating layer 143 for anti-fingerprint.
AG(Anti-Glare) 코팅층(141)은 빛 굴절을 차단하여 눈부심을 방지하기 위한 것으로, 원평광판 원리 및 패턴각인 기술 등을 사용하여 형성될 수 있다.The AG (Anti-Glare) coating layer 141 is to prevent glare by blocking the light refraction, it can be formed using the principle of the flat plate and the pattern engraving technology.
AR(Anti-Reflective) 코팅층(142)은 반사광 방지를 위한 것으로, 굴절율을 낮추어 반사율을 함께 낮추어 줌으로써 투명도를 보다 향상시킬 수 있게 된다. The AR (Anti-Reflective) coating layer 142 is for preventing the reflection of light, it is possible to further improve the transparency by lowering the refractive index by lowering the refractive index.
AF(Anti-Finger) 코팅층(143)은 지문 방지를 위한 것으로, 하드코트제의 습성을 올리는 방향으로 설계하여 지문 성분이 부착되더라도 습성이 펴져 두드러지지 않게 하는 방법 등을 사용하여 형성될 수 있다. The AF (Anti-Finger) coating layer 143 is designed to prevent fingerprints, and may be formed using a method of increasing the wettability of the hard coat agent so that the wettability does not stand out even if the fingerprint component is attached.
광학 코팅층(140)은 5 ~ 50㎛의 두께로 형성될 수 있다. 이는 광학 코팅층(140)의 두께가 5㎛ 미만일 경우 표면경도를 확보하기 어렵고, 두께가 50㎛를 초과할 경우 외부의 충격으로 인한 크랙(crack)이 발생할 우려가 있기 때문이다. The optical coating layer 140 may be formed to a thickness of 5 ~ 50㎛. This is because when the thickness of the optical coating layer 140 is less than 5㎛, it is difficult to secure the surface hardness, and when the thickness exceeds 50㎛, a crack may occur due to an external impact.
한편, 디스플레이 커버층(130)은 사출압축 성형(Injection Compression Molding)될 수 있다. 예를 들어, 상부금형과 하부금형으로 이루어진 금형 내에 수지를 사출 충전한 뒤 약간 열려있는 상부 금형에 압축력을 가하여 금형을 완전히 닫고 경화시킴으로써 디스플레이 커버층(130)을 성형할 수 있다. 이처럼 사출압축 성형을 통해 디스플레이 커버층(130)을 형성하게 되면 치수 정밀도가 높으며, 사출시 발생하는 복굴절을 최소화할 수 있게 된다. The display cover layer 130 may be injection compression molding. For example, the display cover layer 130 may be formed by injection-filling a resin into a mold including an upper mold and a lower mold, and then applying a compressive force to a slightly open upper mold to completely close and cure the mold. When the display cover layer 130 is formed through injection compression molding as described above, dimensional accuracy is high, and birefringence generated during injection can be minimized.
디스플레이 커버층(130)은 폴리카보네이트(PC: PolyCarbonate) 또는 폴리메틸메타크릴레이트(PMMA: PolyMethylMethacrylate) 소재로 형성될 수 있다. The display cover layer 130 may be formed of polycarbonate (PC: PolyCarbonate) or polymethyl methacrylate (PMMA: PolyMethylMethacrylate).
폴리카보네이트(PC: PolyCarbonate)는 열가소성 플라스틱의 하나로, 내열성, 시인성, 투명성의 특징이 있으며, 전기 절연성과 내충격성이 우수한 장점이 있다. 특히, 강화유리의 약 150배 이상의 충격도를 지니고 있어 폴리카보네이트 소재로 디스플레이 커버층(130)을 제조할 경우 내구성을 향상시킬 수 있게 된다. Polycarbonate (PC: PolyCarbonate) is one of thermoplastics, and has heat resistance, visibility, and transparency, and has excellent electrical insulation and impact resistance. In particular, having a shock degree of about 150 times or more than that of tempered glass can improve durability when manufacturing the display cover layer 130 with a polycarbonate material.
폴리메틸메타크릴레이트(PMMA: PolyMethylMethacrylate)는 투명성, 내후성, 착색성 등이 우수한 장점이 있다. 특히, 약 97%의 광투과율을 지니고 있어 폴리메틸메타크릴레이트 소재로 디스플레이 커버층(130)을 제조할 경우 우수한 시인성을 확보할 수 있게 된다. Polymethyl methacrylate (PMMA: PolyMethylMethacrylate) has advantages such as transparency, weather resistance, and colorability. In particular, having a light transmittance of about 97%, it is possible to ensure excellent visibility when manufacturing the display cover layer 130 with a polymethyl methacrylate material.
전술한 바와 같이, 디스플레이 장치용 커버 윈도우(100)는 하드 코팅층(120)과 디스플레이 커버층(130)을 가볍고 성형이 용이한 수지 소재로 형성함으로써, 곡면 형상과 같이 다양한 형태로 제조할 수 있게 된다. As described above, the cover window 100 for the display device may be manufactured in various forms such as a curved shape by forming the hard coating layer 120 and the display cover layer 130 with a light and easy resin molding material. .
또한, 디스플레이 커버층(130)을 사출압축 성형을 통해 제조함으로써 사출시 발생하는 복굴절을 최소화하여 광투과율을 향상시킬 수 있게 된다. In addition, by manufacturing the display cover layer 130 through injection compression molding it is possible to minimize the birefringence generated during the injection to improve the light transmittance.
아울러, 디스플레이 커버층(130)의 상부에 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층(141)과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층(142)과, 지문방지를 위한 AF(Anti-Finger) 코팅층(143) 중 적어도 하나 이상을 포함하는 광학 코팅층(140)을 배치시킴으로써, 디스플레이 장치의 사용성을 향상시킬 수 있게 된다. In addition, an anti-glare (AG) coating layer 141 for blocking light refraction, an anti-reflective (AR) coating layer 142 for preventing reflected light, and an AF (for fingerprint prevention) on the display cover layer 130. By arranging the optical coating layer 140 including at least one of the anti-finger coating layer 143, it is possible to improve the usability of the display device.
도 3은 본 발명의 일 실시예에 따른 디스플레이 장치용 커버 윈도우의 제조방법에 대한 블록선도이다. 3 is a block diagram of a method of manufacturing a cover window for a display device according to an embodiment of the present invention.
도 3에 도시된 바와 같이, 디스플레이 장치용 커버 윈도우의 제조방법(200)은 인쇄층을 형성하는 단계(210)와, 하드 코팅층을 형성하는 단계(220)와, 디스플레이 커버층을 형성하는 단계(230)와, 광학 코팅층을 형성하는 단계(240)를 포함한다. As shown in FIG. 3, the method 200 for manufacturing a cover window for a display device includes forming a printed layer 210, forming a hard coating layer 220, and forming a display cover layer ( 230, and forming an optical coating layer (240).
인쇄층을 형성하는 단계(210)는 중앙에 디스플레이 홀(111)이 형성된 인쇄층(110)을 형성한다. 여기서, 인쇄층(110)은 디스플레이 패널(미도시)과 하드 코팅층 (120) 사이에 배치되므로 별도의 접착물 없이도 디스플레이 장치에 고정이 가능하다. In the forming of the printed layer 210, the printed layer 110 having the display hole 111 formed therein is formed. Here, the print layer 110 is disposed between the display panel (not shown) and the hard coating layer 120 can be fixed to the display device without a separate adhesive.
하드 코팅층을 형성하는 단계(220)는 인쇄층(110)을 보호하도록 인쇄층(110)의 상부에 수지 소재로 형성된 하드 코팅층(120)을 형성한다. In the forming of the hard coating layer 220, the hard coating layer 120 formed of a resin material is formed on the printing layer 110 to protect the printing layer 110.
보다 구체적으로, 하드 코팅층(120)은 우레탄 아크릴레이트(Urethane Acrylate)와 폴리에스터 아크릴레이트(Polyester acrylate)계열의 고관능 수지를 사출함으로써 형성될 수 있다. 이때, 하드 코팅층(120)은 표면경도를 확보하고, 외부의 충격으로 인한 크랙(crack)의 발생을 미연에 방지하기 위해 5 ~ 30㎛의 두께로 형성되는 것이 바람직하다. More specifically, the hard coating layer 120 may be formed by injecting a urethane acrylate (polyurethane acrylate) and polyester acrylate-based high-functional resin. At this time, the hard coating layer 120 is preferably formed with a thickness of 5 ~ 30㎛ to secure the surface hardness, and to prevent the occurrence of cracks due to external impact.
디스플레이 커버층을 형성하는 단계(230)는 하드 코팅층(120)의 상부에 수지 소재로 형성된 디스플레이 커버층(130)을 형성한다. In the forming of the display cover layer 230, the display cover layer 130 formed of a resin material is formed on the hard coating layer 120.
보다 구체적으로, 디스플레이 커버층(130)은 사출압축 성형(Injection Compression Molding)에 의해 형성될 수 있다. 예를 들어, 상부금형과 하부금형으로 이루어진 금형 내에 수지를 사출 충전한 뒤 약간 열려있는 상부 금형에 압축력을 가하여 금형을 완전히 닫고 경화시킴으로써 디스플레이 커버층(130)을 성형할 수 있다. More specifically, the display cover layer 130 may be formed by injection compression molding. For example, the display cover layer 130 may be formed by injection-filling a resin into a mold including an upper mold and a lower mold, and then applying a compressive force to a slightly open upper mold to completely close and cure the mold.
이처럼 사출압축 성형을 통해 디스플레이 커버층(130)을 형성하게 되면 치수 정밀도가 높으며, 사출시 발생하는 복굴절을 최소화할 수 있게 된다. 이때, 디스플레이 커버층(130)은 표면경도를 확보하고, 외부의 충격으로 인한 크랙(crack)의 발생을 미연에 방지하기 위해 5 ~ 20㎛의 두께로 형성되는 것이 바람직하다. When the display cover layer 130 is formed through injection compression molding as described above, dimensional accuracy is high, and birefringence generated during injection can be minimized. In this case, the display cover layer 130 is preferably formed to a thickness of 5 ~ 20㎛ in order to secure the surface hardness, and to prevent the occurrence of cracks due to external impact.
광학 코팅층을 형성하는 단계(240)는 디스플레이 커버층(130)의 상부에 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층(141)과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층(142)과, 지문 방지를 위한 AF(Anti-Finger) 코팅층(143) 중 적어도 하나 이상을 포함하는 광학 코팅층(140)을 형성한다. The forming of the optical coating 240 may include an anti-glare (AG) coating layer 141 for blocking light refraction and an anti-reflective (AR) coating layer 142 for preventing reflection light on the display cover layer 130. And an optical coating layer 140 including at least one or more of an anti-finger (AF) coating layer 143 for fingerprint prevention.
보다 구체적으로, 광학 코팅층(140)은 디스플레이 코팅층(130)의 표면에 스프레이 코팅(Spray coating) 또는 플로우 코팅(Flow coating) 처리하여 형성될 수 있다. 이는, 광학 코팅층(140)을 접착 방식으로 형성하게 되면, 디스플레이 커버층(130)이 곡면 형상으로 이루어질 경우 디스플레이 커버층(130)의 표면에 광학 코팅층(140)을 형성하는 것이 어려워질 수 있기 때문이다. More specifically, the optical coating layer 140 may be formed by spray coating or flow coating the surface of the display coating layer 130. This is because, when the optical coating layer 140 is formed by an adhesive method, it may be difficult to form the optical coating layer 140 on the surface of the display cover layer 130 when the display cover layer 130 has a curved shape. to be.
한편, 광학 코팅층(140)은 표면경도를 확보하고, 외부의 충격으로 인한 크랙(crack)의 발생을 미연에 방지하기 위해 5 ~ 50㎛의 두께로 형성되는 것이 바람직하다. On the other hand, the optical coating layer 140 is preferably formed to a thickness of 5 ~ 50㎛ in order to secure the surface hardness, and prevent the occurrence of cracks due to external impact.
본 발명은 첨부된 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 수 있을 것이다. 따라서, 본 발명의 진정한 보호 범위는 첨부된 청구 범위에 의해서만 정해져야 할 것이다. Although the present invention has been described with reference to one embodiment shown in the accompanying drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

Claims (6)

  1. 중앙에 디스플레이 홀이 형성된 인쇄층;A printed layer having a display hole formed in a center thereof;
    상기 인쇄층의 상부에 배치되어 상기 인쇄층을 보호하며, 수지 소재로 형성된 하드 코팅층; A hard coating layer disposed on the printing layer to protect the printing layer and formed of a resin material;
    상기 하드 코팅층의 상부에 배치되며, 수지 소재로 형성된 디스플레이 커버층; 및 A display cover layer disposed on the hard coating layer and formed of a resin material; And
    상기 디스플레이 커버층의 상부에 배치되며, 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층과, 지문 방지를 위한 AF(Anti-Finger) 코팅층 중 적어도 하나 이상을 포함하는 광학 코팅층; At least one of an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-finger (AF) coating layer for fingerprint prevention is disposed on the display cover layer. An optical coating layer comprising one or more;
    을 포함하는 디스플레이 장치용 커버 윈도우. Cover window for a display device comprising a.
  2. 제1항에 있어서, The method of claim 1,
    상기 디스플레이 커버층은 사출압축 성형되는 것을 특징으로 하는 디스플레이 장치용 커버 윈도우. The display cover layer is a cover window for a display device, characterized in that injection molding.
  3. 제1항에 있어서, The method of claim 1,
    상기 디스플레이 커버층은 폴리카보네이트(PC: PolyCarbonate) 또는 폴리메틸메타크릴레이트(PMMA: PolyMethylMethacrylate) 소재로 형성된 것을 특징으로 하는 디스플레이 장치용 커버 윈도우.The display cover layer is a cover window for a display device, characterized in that formed of polycarbonate (PC: PolyCarbonate) or polymethyl methacrylate (PMMA: PolyMethylMethacrylate) material.
  4. 중앙에 디스플레이 홀이 형성된 인쇄층을 형성하는 단계;Forming a printed layer having a display hole in a center thereof;
    상기 인쇄층을 보호하도록 상기 인쇄층의 상부에 수지 소재로 형성된 하드 코팅층을 형성하는 단계; Forming a hard coating layer formed of a resin material on top of the print layer to protect the print layer;
    상기 하드 코팅층의 상부에 수지 소재로 형성된 디스플레이 커버층을 형성하는 단계; 및 Forming a display cover layer formed of a resin material on the hard coating layer; And
    상기 디스플레이 커버층의 상부에 빛 굴절 차단을 위한 AG(Anti-Glare) 코팅층과, 반사광 방지를 위한 AR(Anti-Reflective) 코팅층과, 지문 방지를 위한 AF(Anti-Finger) 코팅층 중 적어도 하나 이상을 포함하는 광학 코팅층을 형성하는 단계; At least one of an anti-glare (AG) coating layer for blocking light refraction, an anti-reflective (AR) coating layer for preventing reflection of light, and an anti-finger (AF) coating layer for fingerprint prevention on the display cover layer. Forming an optical coating layer comprising;
    를 포함하는 디스플레이 장치용 커버 윈도우의 제조방법. Method of manufacturing a cover window for a display device comprising a.
  5. 제4항에 있어서, The method of claim 4, wherein
    상기 디스플레이 커버층은 사출압축 성형에 의해 형성되는 것을 특징으로 하는 디스플레이 장치용 커버 윈도우의 제조방법. The display cover layer is a manufacturing method of a cover window for a display device, characterized in that formed by injection compression molding.
  6. 제4항에 있어서, The method of claim 4, wherein
    상기 광학 코팅층은 상기 디스플레이 코팅층의 표면에 스프레이 코팅(Spray coating) 또는 플로우 코팅(Flow coating) 처리 함으로써 형성되는 것을 특징으로 하는 디스플레이 장치용 커버 윈도우의 제조방법. The optical coating layer is a method of manufacturing a cover window for a display device, characterized in that formed by spray coating (Spray coating) or flow coating (Flow coating) on the surface of the display coating layer.
PCT/KR2016/014415 2016-03-25 2016-12-09 Cover window for display device and manufacturing method therefor WO2017164485A1 (en)

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