WO2017164485A1 - Fenêtre de couverture pour dispositif d'affichage et son procédé de fabrication - Google Patents

Fenêtre de couverture pour dispositif d'affichage et son procédé de fabrication 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
Authority
WO
WIPO (PCT)
Prior art keywords
layer
coating layer
display
display device
cover
Prior art date
Application number
PCT/KR2016/014415
Other languages
English (en)
Korean (ko)
Inventor
김경택
이승훈
장동식
Original Assignee
(주)엘지하우시스
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)엘지하우시스 filed Critical (주)엘지하우시스
Publication of WO2017164485A1 publication Critical patent/WO2017164485A1/fr

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Classifications

    • 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.

Landscapes

  • 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

La présente invention concerne une fenêtre de couverture pour un dispositif d'affichage, pouvant être fabriquée sous diverses formes. La fenêtre de couverture pour un dispositif d'affichage comprend une couche d'impression, une couche de revêtement dur, une couche de couverture d'affichage et une couche de revêtement optique. La couche d'impression a un trou d'affichage formé au centre de celle-ci. La couche de revêtement dur est disposée au niveau de la partie supérieure de la couche d'impression, de façon à protéger la couche d'impression, et formée à partir d'un matériau de résine. La couche de couverture d'affichage est disposée au niveau de la partie supérieure de la couche de revêtement dur et formée à partir d'un matériau de résine. La couche de revêtement optique est disposée au niveau de la partie supérieure de la couche de couverture d'affichage, et comprend au moins un élément parmi une couche de revêtement anti-éblouissement (AG) pour bloquer une réfraction de lumière, une couche de revêtement antireflet (AR) pour empêcher la réflexion de lumière, et une couche de revêtement anti-doigt (AF) pour empêcher des empreintes digitales.
PCT/KR2016/014415 2016-03-25 2016-12-09 Fenêtre de couverture pour dispositif d'affichage et son procédé de fabrication WO2017164485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160036031A KR101907253B1 (ko) 2016-03-25 2016-03-25 디스플레이 장치용 커버 윈도우의 제조방법
KR10-2016-0036031 2016-03-25

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WO2017164485A1 true WO2017164485A1 (fr) 2017-09-28

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KR (1) KR101907253B1 (fr)
WO (1) WO2017164485A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11678512B2 (en) * 2019-12-20 2023-06-13 Lg Display Co., Ltd. Display apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102101888B1 (ko) * 2018-01-11 2020-04-21 삼성디스플레이 주식회사 입체 기재의 제조 방법
KR102582647B1 (ko) 2018-10-10 2023-09-25 삼성디스플레이 주식회사 커버 윈도우 부재 및 이를 갖는 표시 장치
KR102594548B1 (ko) 2019-01-02 2023-10-27 삼성디스플레이 주식회사 윈도우, 윈도우의 제조 방법 및 윈도우를 포함하는 표시 장치
KR102660032B1 (ko) 2019-01-10 2024-04-25 삼성디스플레이 주식회사 표시장치
KR102668852B1 (ko) 2019-01-14 2024-05-24 삼성디스플레이 주식회사 보호 테이프 및 이를 포함하는 표시 장치

Citations (5)

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KR20080030259A (ko) * 2006-09-29 2008-04-04 엘지마이크론 주식회사 디스플레이용 반사방지 필름 및 그 제조 방법
KR20090034505A (ko) * 2007-10-04 2009-04-08 주식회사 두성테크 휴대기기용 표시패널 및 그 제조방법
KR20130075248A (ko) * 2011-12-27 2013-07-05 웅진케미칼 주식회사 기능성이 부여된 고경도 필름
KR20130075249A (ko) * 2011-12-27 2013-07-05 웅진케미칼 주식회사 기능성이 부여된 고경도 필름
KR20160008722A (ko) * 2014-07-14 2016-01-25 (주)엘지하우시스 곡면형 커버윈도우 및 그 제조방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080030259A (ko) * 2006-09-29 2008-04-04 엘지마이크론 주식회사 디스플레이용 반사방지 필름 및 그 제조 방법
KR20090034505A (ko) * 2007-10-04 2009-04-08 주식회사 두성테크 휴대기기용 표시패널 및 그 제조방법
KR20130075248A (ko) * 2011-12-27 2013-07-05 웅진케미칼 주식회사 기능성이 부여된 고경도 필름
KR20130075249A (ko) * 2011-12-27 2013-07-05 웅진케미칼 주식회사 기능성이 부여된 고경도 필름
KR20160008722A (ko) * 2014-07-14 2016-01-25 (주)엘지하우시스 곡면형 커버윈도우 및 그 제조방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11678512B2 (en) * 2019-12-20 2023-06-13 Lg Display Co., Ltd. Display apparatus

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KR20170113792A (ko) 2017-10-13
KR101907253B1 (ko) 2018-10-12

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