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UV-curable resin composition for use in touchscreen, and bonding method and article using said uv-curable resin

A technology of curable resin and resin composition, which is applied in the field of optical components and ultraviolet curable resin composition, and can solve unknown problems

Inactive Publication Date: 2017-02-22
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, similarly, it has not been known which resin is suitable for the process of laminating the optical substrate after the resin is cured.

Method used

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  • UV-curable resin composition for use in touchscreen, and bonding method and article using said uv-curable resin
  • UV-curable resin composition for use in touchscreen, and bonding method and article using said uv-curable resin
  • UV-curable resin composition for use in touchscreen, and bonding method and article using said uv-curable resin

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0138] figure 1 It is a process drawing which shows 1st Embodiment of the manufacturing process of the optical member using the ultraviolet curable resin composition of this invention.

[0139] This method is a method of obtaining an optical member by bonding the liquid crystal display unit 1 and the transparent substrate 2 together.

[0140] The liquid crystal display unit 1 is a liquid crystal display unit in which a liquid crystal material is sealed between a pair of substrates on which electrodes are formed, and includes a polarizing plate, a driving circuit, a signal input cable, and a backlight unit.

[0141] The transparent substrate 2 is a glass plate, polymethyl methacrylate (PMMA) plate, polycarbonate (PC) plate, alicyclic polyolefin polymer (COP) plate, acrylic resin, polyethylene terephthalate and other transparent substrates. For transparent substrates, hard coat treatment and anti-reflection treatment can be performed on one or both sides.

[0142] Here, as th...

no. 2 approach

[0166] The optical member of the present invention can also be produced by the second embodiment modified as follows from the first embodiment. In addition, the same content as the said 1st Embodiment applies to the detailed content in each process, Therefore, description about the same part is abbreviate|omitted.

[0167] (Process 1)

[0168] First, if figure 2 As shown in (a), the ultraviolet curable composition is applied to the surface on which the light shielding portion 4 is formed on the transparent substrate 2 having the light shielding portion, and then the resulting coating layer (ultraviolet curable resin composition layer 5) UV rays 8 are irradiated to obtain a cured portion present on the lower side of the coating layer (viewed from the above ultraviolet curable resin composition, the transparent substrate side) and a cured portion present on the upper side of the coating layer (opposite to the transparent substrate side). Cured material layer 6 of the uncured ...

no. 3 approach

[0176] image 3 It is a process drawing which shows 3rd Embodiment of the manufacturing method of the optical member using the ultraviolet curable resin composition of this invention. In addition, the same content as the said 1st Embodiment applies to the detailed content in each process, Therefore, description about the same part is abbreviate|omitted.

[0177] In addition, the same code|symbol is attached|subjected to the same member in the figure as the structural member in the said 1st Embodiment, and the description is not repeated here.

[0178] (Process 1)

[0179] First, if image 3 As shown in (a), the ultraviolet curable composition is coated on the surface of the liquid crystal display unit 1 . Then, the ultraviolet curable resin composition layer 5 is irradiated with ultraviolet rays 8 to obtain a cured portion present on the lower side of the coating layer (viewed from the above ultraviolet curable resin composition, the transparent substrate side) and a cured ...

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Abstract

This invention provides a UV-curable resin composition for use in a touchscreen. Said resin composition excels in terms of workability and makes it possible to obtain, with high productivity, an optical member, such as a display unit, that exhibits good adhesion. Said resin composition is characterized in that the outermost surface of the resin layer that results when the resin composition is applied to a flat surface and then exposed to ultraviolet light forms asperities that are at least 1 [mu]m in size. Said resin composition, which is used to bond two or more optical substrates together, preferably contains (a) a rubber component and (b) a non-rubber component and is characterized by containing (A) a monofunctional (meth)acrylate that has a C8-30 aliphatic chain, (B) a softening component, (C) a photopolymerizable oligomer, and (E) a photopolymerization initiator.

Description

technical field [0001] The present invention relates to an ultraviolet curable resin composition for bonding at least two optical substrates together and a method for producing an optical member using the composition. Background technique [0002] In recent years, display devices in which a touch panel is bonded to a display screen of a display device such as a liquid crystal display, a plasma display, or an organic electroluminescent (EL) display to enable screen input have been widely used. This touch panel has a structure in which a glass plate or a resin film formed with a transparent electrode is bonded facing each other with a small gap, and a transparent protective plate made of glass or resin is bonded to the touch surface as necessary. [0003] There is a technology of using a double-sided adhesive sheet for bonding a glass plate or film on which a transparent electrode is formed in a touch panel and a transparent protective plate made of glass or resin, or for bond...

Claims

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Application Information

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IPC IPC(8): C09J4/02B32B7/12C08F2/44C08F290/00C09J5/00C09J11/06C09J11/08G09F9/00
CPCB32B7/12C08F2/44C08F290/00C09J5/00C09J11/06C09J11/08G09F9/00
Inventor 水口贵文本桥隼龟谷英照
Owner NIPPON KAYAKU CO LTD
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