ANTIREFLECTION FILM AND MANUFACTURING METHOD THEREOF

• Main Authors: KIM HEON, CHANG YEONG RAE, BYUN JIN SEOK, KIM BOO KYUNG
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2021
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

To provide an antireflection film with low reflectance and high light transmittance capable of achieving both high scratch resistance and antifouling property at the same time and increasing clarity of a screen in a display device.SOLUTION: An antireflection film comprises: a hard coating layer containing binder resin and organic or inorganic fine particles dispersed into the binder resin; and a low reflection layer formed on one surface of the hard coating layer and containing the binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed into the binder resin. 70 vol.% or more of the whole solid inorganic nanoparticles are present within 50% of thickness of the whole low reflectance layer from an interface between the hard coating layer and the low reflectance layer. The solid inorganic nanoparticles have density of 2.00 g/cm3 to 5.00 g/cm3 and the hollow inorganic nanoparticles have density of 1.50 g/cm3 to 3.50 g/cm3.SELECTED DRAWING: Figure 1 【課題】低い反射率及び高い透光率を有し、かつ高い耐スクラッチ性及び防汚性を同時に実現でき、ディスプレイ装置の画面の鮮明度を高めることができる反射防止フィルムを提供する。【解決手段】バインダー樹脂と前記バインダー樹脂に分散された有機または無機微粒子を含むハードコーティング層と、前記ハードコーティング層の一面に形成され、バインダー樹脂と前記バインダー樹脂に分散された中空無機ナノ粒子及びソリッド無機ナノ粒子を含む低屈折層と、を含み、前記ハードコーティング層と前記低屈折層との間の界面から前記低屈折層全体の厚みの５０％以内に前記ソリッド無機ナノ粒子全体中の７０体積％以上が存在し、前記ソリッド無機ナノ粒子は、２．００ｇ／ｃｍ３〜５．００ｇ／ｃｍ３の密度を有し、前記中空無機ナノ粒子は、１．５０ｇ／ｃｍ３〜３．５０ｇ／ｃｍ３の密度を有する、反射防止フィルム。【選択図】図１