POLARIZING PLATE WITH RETARDATION LAYER AND IMAGE DISPLAY DEVICE INCLUDING SAME

• Main Authors: NAGAHATA KEIJI, ARUGA SOHEI
• Format: Patent
• Language: Chinese; English
• Published: 16.05.2023
• Subjects: ADVERTISING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention provides a polarizing plate with a phase difference layer and an image display device including the polarizing plate with the phase difference layer. Provided is a polarizing plate with a phase difference layer in which phase difference unevenness and color unevenness in harsh high-temperature and high-temperature and high-humidity environments are suppressed. A polarizing plate with a phase difference layer according to an embodiment of the present invention comprises: a polarizing plate including a polarizer; a first phase difference layer comprising a stretched film of a polycarbonate resin film; and a second phase difference layer having a shear failure strength T of 15 MPa or more. 本发明提供带相位差层的偏振片及包含该带相位差层的偏振片的图像显示装置。本发明提供抑制了严酷的高温环境及高温高湿环境下的相位差不均及颜色不均的带相位差层的偏振片。本发明实施方式的带相位差层的偏振片具有：包含起偏器的偏振片；由聚碳酸酯系树脂膜的拉伸膜构成的第一相位差层；以及剪切破坏强度T为15MPa以上的第二相位差层。