POLARIZING FILM LAMINATE FOR POWER VEHICLE AND OPTICAL DISPLAY PANEL IN WHICH THE POLARIZING FILM LAMINATE IS USED

• Main Authors: TAKADA KATSUNORI, TAKEDA TETSURO, KIMURA KEISUKE, SUGINO YOICHIRO, YAMASHITA TOSHIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2023
• 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

To provide a polarizing film laminate and the like, which can comprehensively solve problems of polyene formation, color loss and red discoloration from heating.SOLUTION: The polarizing film laminate has an iodine concentration and a moisture content included in an area described below in an x-y orthogonal coordinate system in which the x-axis represents an iodine concentration in the polarizing film and the y-axis represents a moisture content in the polarizing film laminate. The area is enclosed by: a first line segment that connects a first coordinate point at 7.0 wt% iodine concentration and 0.7 g/m2 moisture content and a second coordinate point at 2.2 wt% iodine concentration and 3.2 g/m2 moisture content; a second line segment that connects the second coordinate point and a third coordinate point at 2.2 wt% iodine concentration and 4.0 g/m2 moisture content; a third line segment that connects the third coordinate point and a fourth coordinate point at 3.0 wt% iodine concentration and 4.0 g/m2 moisture content; a fourth line segment that connects the fourth coordinate point and a fifth coordinate point at 10.0 wt% iodine concentration and 0.7 g/m2 moisture content; and a fifth line segment that connects the first coordinate point and the fifth coordinate point.SELECTED DRAWING: Figure 5 【課題】ポリエン化、色抜け、及び加熱赤変の問題を包括的に解決することができる偏光フィルム積層体等を提供する。【解決手段】ｘ－軸に偏光膜のヨウ素濃度を、ｙ－軸に偏光フィルム積層体の水分量をそれぞれとったｘ－ｙ直交座標系において、ヨウ素濃度７．０ｗｔ．％及び水分量０．７ｇ／ｍ2の第１座標点と、ヨウ素濃度２．２ｗｔ．％及び水分量３．２ｇ／ｍ2の第２座標点とを結ぶ第１の線分、第２座標点と、ヨウ素濃度２．２ｗｔ．％及び水分量４．０ｇ／ｍ2の第３座標点とを結ぶ第２の線分、第３座標点と、ヨウ素濃度３．０ｗｔ．％及び水分量４．０ｇ／ｍ2の第４の座標点とを結ぶ第３の線分、第４座標点と、ヨウ素濃度１０．０ｗｔ．％及び水分量０．７ｇ／ｍ2の第５座標点とを結ぶ第４の線分、及び第１座標点と第５座標点とを結ぶ第５の線分により囲まれる領域内に含まれるヨウ素濃度及び水分量を有する偏光フィルム積層体である。【選択図】図５