POLARIZING PLATE

• Main Authors: TSUCHIMOTO KAZUYOSHI, YOSHIKAWA SENRI, SUGINO YOICHIRO, HAMAMOTO EIJI, KUSUMOTO SEIICHI
• Format: Patent
• Language: English
• Published: 31.08.2001
• Edition: 7
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; 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; DYES; FILLING PASTES; FREQUENCY-CHANGING; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a thin polarizing plate which contributes to the thickness reduction and the weight saving of an LCD, etc., by providing the polarizing plate good in humidification reliability even in the case of making the polarizing plate thinner. SOLUTION: A film of a sample (4) for protective layers saponified by the sodium hydroxide aqueous solution to one side of a polarizer and a film of a sample (2) for protective layers saponified by the sodium hydroxide aqueous solution to the opposite side are stuck to manufacture the polarizing plate. The sample (2) is the thickness 40 μm TAC film and has moisture vapor permeation rate 0.06 (g/cm2.24 h). The sample (4) is the film forming an ultraviolet curing type urethane acrylate system resin layer with the thickness 4 μm to the TAC film with the same thickness 40 μm as (2) as a moisture barrier and has moisture vapor permeation rate 0.008 (g/cm2.24 h).