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Adhesive composition for foldable display, adhesive film using same, and foldable display comprising same

A technology of adhesive film and composition, applied in the direction of film/sheet adhesive, adhesive type, ester copolymer adhesive, etc., can solve the problem of display device damage, etc., and achieve dielectric constant increase The effect of large, dielectric susceptibility increase

Active Publication Date: 2020-06-12
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Meanwhile, deformable display devices have the following problems: each configuration of the display device may be damaged due to deformation, and therefore, each configuration of such a display device needs to satisfy folding reliability and stability.

Method used

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  • Adhesive composition for foldable display, adhesive film using same, and foldable display comprising same
  • Adhesive composition for foldable display, adhesive film using same, and foldable display comprising same
  • Adhesive composition for foldable display, adhesive film using same, and foldable display comprising same

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Embodiment approach

[0109] Hereinafter, embodiments of the present disclosure will be described in detail so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be presented in various forms and is not limited to the embodiments described herein.

experiment example

[0111] Components and weight ratios of adhesive compositions used as Examples and Comparative Examples of the present application are described in Table 1 below.

[0112] [Table 1]

[0113]

Embodiment 1

[0115] Into a 2L reactor that refluxes nitrogen and is equipped with a cooling device for easy temperature control, 50 parts by weight of ethylhexyl acrylate (EHA), 48 parts by weight of carbityl acrylate (CBA) and 2 parts by weight of acrylic acid are introduced (AA), and the resultant was diluted 50% with Methyl Ethyl Ketone (MEK) and purged with nitrogen for about 1 hour. When the temperature of the reactor was increased to 67°C, 200ppm of 2,4-diphenyl-4-methyl-1-pentene and 200ppm of azobisisobutyronitrile (AIBN) were introduced thereinto, and the polymerization The reaction was carried out for 2 hours. Polymerization was performed by injecting oxygen gas thereinto, while methyl ethyl ketone (MEK) was added so that the solid content of the polymer became about 24%, and a heat curable resin having a molecular weight of 2000000 g / mol was prepared.

[0116] The heat-curable resin obtained by mixing a cross-linking agent (epoxy compound-based cross-linking agent (BXX-5240), i...

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Abstract

The present application provides an adhesive composition for a foldable display, an adhesive film using same, and a foldable display comprising same, the adhesive composition comprising a thermosetting resin and a crosslinking agent, wherein the thermosetting resin comprises a unit derived from a compound comprising at least one N or O and at least one unshared electron pair in a molecule and hasa glass transition temperature of at most -70 DEG C.

Description

technical field [0001] The present application relates to an adhesive composition for a foldable display, an adhesive film using the same, and a foldable display comprising the adhesive composition. [0002] This application claims priority and benefit from Korean Patent Application No. 10-2018-0013388 filed with the Korean Intellectual Property Office on February 2, 2018, the entire contents of which are incorporated herein by reference. Background technique [0003] With recent developments in display-related technologies, display devices that are deformable (eg, folded, rolled into a roll, or stretched like a rubber band) during a use stage have been researched and developed. These displays can be transformed into various shapes, thus satisfying both a larger display during the use phase and a smaller display for portability. [0004] The deformable display device may be deformed into various shapes in response to a user's demand or according to a situation in which the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J201/02C09J201/08C09J7/10C09J7/30
CPCC09J201/02C09J201/08C08F220/1808C09J133/02C09J7/10C09J2433/00C09J2203/318C09J2301/312C08F220/282C08F220/02C09J201/025C09J7/00B32B7/12B32B2457/208C09J133/08G02F1/133305G02F2202/28C09K2323/057C09K2323/05B32B2457/20
Inventor 宋喜朴现圭金贤哲
Owner LG CHEM LTD