POLARIZING PLATE

• Main Author: HAMAMOTO DAISUKE
• Format: Patent
• Language: English; Korean
• Published: 03.03.2020
• Subjects: ADHESIVES; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; PHYSICS; POLISHES; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명은, 편광막이 수지 기재에 적층된 상태인 채로 이용될 수 있는 편광판으로서, 내구성이 향상된 편광판을 제공한다. 본 발명의 편광판은, 폴리에스테르계 수지 기재와, 그 폴리에스테르계 수지 기재의 편측에 적층된 두께가 10 ㎛ 이하인 편광막을 갖는다. 그 폴리에스테르계 수지 기재의 전반사 감쇠 분광 측정에 의해 산출되는 결정화도가, 0.55 ∼ 0.80 이고, 그 편광막 중의 붕산 농도가, 10 중량％ ∼ 20 중량％ 이다. The present invention provides a polarizing plate that is improved in durability and that can be used as-is in a state where a polarizing film is layered on a resin substrate. This polarizing plate comprises a polyester resin substrate and a polarizing film that is layered on one side of the polyester resin substrate and that has a thickness of 10 µm or less. The degree of crystallinity of the polyester resin substrate as calculated by attenuated total reflection spectrometry is from 0.55 to 0.80, and the boric acid concentration in the polarizing film is from 10 wt% to 20 wt%.