편광 필름 및 편광판

• Main Authors: NIWA TAIKI, TAKEUCHI TOMOYASU, SUMIDA KOJI
• Format: Patent
• Language: Korean
• Published: 29.04.2024
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

우수한 광학 특성을 가지면서도, 투과축 방향에 있어서의 흡수축 방향의 수축력의 균일성이 우수한 편광 필름을 제공한다. 편광 필름은, 폴리비닐 알코올계 수지 필름에 이색성 색소가 흡착 배향되어 있다. 편광 필름에 있어서, 시감도 보정 단체 투과율 Ty는 43.20% 이상이고, 시감도 보정 편광도 Py는 99.9970% 이상이다. 편광 필름의 투과축 방향에 있어서, 막 두께의 최대값과 최소값의 차는 2.1 ㎛ 이하이다. A polarizing film is provided that has excellent uniformity of contraction force in the direction of the absorption axis in the transmission axis direction while having excellent optical characteristics. The polarizing film comprises a dichroic dye adsorbed and oriented on a polyvinyl alcohol resin film. In the polarizing film, the luminosity factor-corrected unit transmittance Ty is greater than or equal to 43.20% and the luminosity factor-corrected polarization degree Py is greater than or equal to 99.9970%. In the transmission axis direction of the polarizing film, the difference between the maximum value and the minimum value of the film thickness is less than or equal to 2.1 μm.