Polarizing film and display device including same

• Main Authors: JUNG WOOSUK, BEON BEONG HUN, LEE DUKJIN, YEON JESEON
• Format: Patent
• Language: English; Korean
• Published: 15.04.2024
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

일 실시예에 따른 편광 필름은 제1 파장 분산층, 상기 제1 파장 분산층 위에 위치하는 편광층을 포함하고, 상기 제1 파장 분산층의 파장 분산성(DSP)은 하기 관계식 1 및 관계식 2를 모두 만족한다. [관계식 1] 0.81 < DSP(450nm)=R(450nm)/R(550nm) < 0.83 [관계식 2] 1.15 < DSP(650nm)=R(650nm)/R(550nm) < 1.17 상기 관계식 1 및 2에서 R(λ)는 파장 λ에서의 위상차값을 의미한다. A polarization film according to an embodiment includes a first wavelength dispersion layer, and a polarization layer that is disposed on the first wavelength dispersion layer. A wavelength dispersion of the first wavelength dispersion layer satisfies both Relational Expression 1 and Relational Expression 2:[Relational Expression 1]0.81<DSP 450 nm=R 450 nm/R 550 nm<0.83[Relational Expression 2]1.15<DSP 650 nm=R 650 nm/R 550 nm<1.17.In Relational Expression 1 and Relational Expression 2, R(γ) denotes a phase difference value in wavelength γ.