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Photocurable resin composition, adhesive, laminated structure, method for producing laminated structure, and display device

An adhesive and compound technology, which is applied in the directions of non-polymer organic compound adhesives, bonding methods, ester copolymer adhesives, etc. problems such as lack of

Active Publication Date: 2021-11-23
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, if Figure 13A and 13B As shown, the presence of uncured adhesive 60 may cause adhesive 60 to overflow when parts 58 and 59 are attached to each other.
Such spillage of adhesive from the originally designed adhesive area may result in a lack of an adhesive area wide enough to bond the enclosure sufficiently securely
Products with such bubbles, resin leaks, or adhesive spills tend to be discarded as defective products
Additionally, the need to expose the assembly to UV light after the parts are attached to each other hinders the use of UV curable adhesives for bonding low light transmission parts

Method used

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  • Photocurable resin composition, adhesive, laminated structure, method for producing laminated structure, and display device
  • Photocurable resin composition, adhesive, laminated structure, method for producing laminated structure, and display device
  • Photocurable resin composition, adhesive, laminated structure, method for producing laminated structure, and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0154] The first embodiment of the photocurable resin composition according to the present embodiment is cured when exposed to light, and contains: (B) 10 to 95 parts by mass of a polyfunctional epoxy compound; and (F) 5 parts by mass to 90 parts by mass of monofunctional oxetane compounds.

[0155] The second embodiment of the photocurable resin composition according to the present embodiment, which can be employed in combination with the first embodiment, further contains (H) a polyfunctional oxetane compound. The total content of (B) polyfunctional epoxy compound and (H) polyfunctional oxetane compound is in the range of 10 to 95 parts by mass.

[0156] In the third embodiment of the photocurable resin composition according to the present embodiment that can be employed in combination with the second embodiment, the content of the (H) polyfunctional oxetane compound is in the range of 1 to 30 parts by mass Inside.

[0157] In the fourth embodiment of the photocurable resi...

Embodiment

[0273] The invention will now be described more specifically by way of illustrative examples.

[0274] 1. Embodiment (P)

[0275] (1) Preparation of adhesive

[0276] The components blended together at the blending ratio shown in Table 1 below were uniformly mixed with HOMO DISPER manufactured by PRIMIX Corporation to prepare an adhesive. Details of the components shown in Table 1 below are as follows:

[0277] (A)-1: glycidyl ether,

[0278] (A)-2: cresyl glycidyl ether,

[0279] (A)-3: 2-ethylhexyl glycidyl ether,

[0280] (B)-1: polypropylene glycol diglycidyl ether,

[0281] (B)-2: polybutadiene skeleton epoxy resin,

[0282](C): Triarylsulfonium salt,

[0283] (D)-1: lauryl acrylate,

[0284] (D)-2: 1,9-nonanediol diacrylate,

[0285] (E): 1-Hydroxy-cyclohexyl-phenyl-ketone,

[0286] (F): 3-ethyl-3{[(3-ethyloxetan-3-yl)methoxy]methyl}oxetane, and

[0287] (G): Liquid isoprene rubber.

[0288] [Table 1]

[0289]

[0290] (2) Fabrication of laminated structu...

Embodiment R1

[0324] [Preparation of first adhesive and second adhesive]

[0325] The components blended together at the blending ratio (mass %) shown in the following Table 3 were uniformly mixed with DISPER to prepare the first adhesive and the second adhesive:

[0326] [table 3]

[0327]

[0328] The amount of time required for the first adhesive to start curing (ie, gelation time) from immediately after the first adhesive was irradiated with ultraviolet rays (ie, gelation time) was 5 minutes. The amount of time required for the first adhesive to be completely cured from immediately after the first adhesive was irradiated with ultraviolet rays was 15 minutes. The cured product of the first adhesive (light-inhibiting portion) had a light transmittance of 3% in the visible radiation range.

[0329]The amount of time required for the second adhesive to start curing (ie, gelation time) from immediately after the second adhesive was irradiated with ultraviolet rays (ie, gelation time) wa...

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Abstract

The present application provides an adhesive capable of suppressing air bubble intrusion and uncured adhesive, which is also suitable for bonding low light-transmitting parts. The adhesive comprises: (A) a monofunctional epoxy compound having one epoxy group per molecule, (B) a multifunctional epoxy compound having two or more epoxy groups per molecule, (C) a photocation generator , (D) an acrylic compound, (E) a photoradical generator, and at least one selected from the group consisting of (F) a monofunctional oxetane compound and (H) a multifunctional Oxetane compounds.

Description

technical field [0001] The present invention generally relates to a photocurable resin composition, an adhesive, a laminated structure, a method for producing the laminated structure, and a display device. More specifically, the present invention relates to a photocurable resin composition that cures when exposed to active energy rays such as ultraviolet rays, an adhesive containing such a photocurable resin composition, a laminated structure including the adhesive, a A method of making such a laminated structure and a display device including the adhesive. Background technique [0002] An electronic device such as a liquid crystal panel is a laminated structure fabricated by stacking a plurality of components on top of each other and bonding them together with an adhesive. Various types of adhesives can be used to make the laminated structure. [0003] Examples of adhesives include optically clear adhesives (OCA) and optically clear resins (OCR) in film form, just to name...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/02B32B27/38C08G59/22C08L33/04C08L63/00C09J4/06C09J5/00C09J7/30C09J11/06C09J163/00G02F1/1333G09F9/00
CPCC09J4/06C09J163/00C09D4/00C09J133/06C08G59/223C08G59/68C08G65/18C08F220/1812C08G59/22C08L33/04C08L63/00C09J11/06G09F9/00C09J5/00C09J7/30G02F1/1333
Inventor 深本悠介吉田真介松川容三中谷守雄松野行壮
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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