Composition for hard coating and coating film thereof
A hard coating composition using silsesquioxane oligomers with reactive functional groups addresses the impact resistance issue of ultra-thin glass in flexible displays, enhancing durability and flexibility.
WO2026141909A1PCT designated stage Publication Date: 2026-07-02DONGJIN SEMICHEM CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DONGJIN SEMICHEM CO LTD
- Filing Date
- 2025-10-27
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Ultra-thin glass used in flexible displays lacks adequate impact resistance and shatters easily upon external impact, posing a risk to users and compromising durability.
Method used
A hard coating composition comprising silsesquioxane oligomers with specific reactive functional groups, including epoxy, amine, thiol, (meth)acrylate, and alkenyl groups, which form a coating film with improved adhesion, flexibility, and impact resistance.
Benefits of technology
The coating composition enhances the anti-shatter effect and impact resistance of thin-film glass, providing excellent physical properties and stability, allowing for various coating processes and applications in flexible displays and protective coatings.
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Smart Images
Figure PCTKR2025017161-APPB-IMG-000001 
Figure PCTKR2025017161-APPB-IMG-000002 
Figure PCTKR2025017161-APPB-IMG-000003
Abstract
The present invention relates to a composition for hard coating and a coating film thereof, the composition comprising: a first silsesquioxane oligomer including at least one first reactive functional group; and a second silsesquioxane oligomer including at least one second reactive functional group, wherein the first reactive functional group is a substituted or unsubstituted epoxy group, and the second reactive functional group is selected from a substituted or unsubstituted amine group, a substituted or unsubstituted thiol group, a substituted or unsubstituted epoxy group, a substituted or unsubstituted (meth)acrylate group, and a substituted or unsubstituted alkenyl group of 2 to 20 carbon atoms.
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