OPTICAL TRANSPARENT FILM FOR FOLDABLE DISPLAY

• Main Authors: BUI QUANG NAM, BAEK JONG HYUN, YOON SEOK HO, LEE JONG HAK, LEE KI HO
• Format: Patent
• Language: English; Korean
• Published: 09.07.2021
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; GENERAL PROCESSES OF COMPOUNDING; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING-UP

The present invention relates to a transparent optical film for a foldable display device. More specifically, the transparent optical film for a foldable display device according to an embodiment of the present invention comprises: a polymer substrate; an inorganic material layer disposed on the polymer substrate and including silicon oxy carbon (SiOxCy); and a hard coating layer disposed on the inorganic material layer and including a silicone-based resin, wherein the hard coating layer further includes a fluorine-based compound, or an anti-contamination layer including a fluorine-based compound is disposed on the hard coating layer. The transparent optical film for a foldable display device according to an embodiment of the present invention has excellent barrier properties to moisture and oxygen, excellent scratch resistance and optical properties, excellent adhesion between an inorganic layer and a hard coating layer, and improved folding properties, thereby being applicable to a foldable display device. 본 발명은 폴더블 표시 장치용 광학 투명 필름에 관한 것으로 보다 상세하게 본 발명의 일 실시예에 따른 폴더블 표시 장치용 광학 투명 필름은 고분자 기재, 고분자 기재 상에 배치되고 실리콘 옥시 카본(SiOxCy)을 포함하는 무기물층, 및 무기물층 상에 배치되고 실리콘계 수지를 포함하는 하드 코팅층을 포함하고, 하드 코팅층은 불소계 화합물을 더 포함하거나, 하드 코팅층 상에 불소계 화합물을 포함하는 오염 방지층이 배치된다. 본 발명의 일 실시예에 따른 폴더블 표시 장치용 광학 투명 필름은 수분 및 산소에 대한 배리어 특성, 내스크래치성 및 광학적 특성이 우수하고, 무기물층과 하드 코팅층 간의 부착성이 우수하며 폴딩 특성이 개선되어 폴더블 표시 장치에 적용할 수 있는 이점을 제공한다.