RETARDATION-LAYER-EQUIPPED POLARIZING PLATE AND IMAGE DISPLAY DEVICE COMPRISING THE RETARDATION-LAYER-EQUIPPED POLARIZING PLATE

• Main Authors: NAGAHATA KEIJI, ARUGA SOHEI
• Format: Patent
• Language: English; Korean
• Published: 23.05.2023
• 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; 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

The present invention provides a phase contrast layer-attached polarizing plate in which phase contrast unevenness and color stains are suppressed in a harsh high temperature environment, and in a high temperature and high humidity environment. The phase contrast layer-attached polarizing plate in an embodiment of the present invention includes a polarizing plate including a polarizer, a first phase contrast layer composed of a stretched film of a polycarbonate-based resin film, and a second phase contrast layer having a shear breaking strength (T) of 15 MPa or more. 본 발명은 가혹한 고온 환경, 및 고온 고습 환경에서의 위상차 불균일 및 색 얼룩이 억제된 위상차층 부착 편광판을 제공하는 것이다. 본 발명의 실시형태의 위상차층 부착 편광판은, 편광자를 포함하는 편광판과, 폴리카보네이트계 수지 필름의 연신 필름으로 구성되는 제1 위상차층과, 전단 파괴 강도(T)가 15MPa 이상인 제2 위상차층을 포함한다.