FILM FOR PROTECTING POLARIZER, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: TAKIMOTO, MASATAKA, MIZUTANI, YOSUKE, KANEKO, YUKI
• Format: Patent
• Language: English; French; Japanese
• Published: 13.08.2015
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; 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; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

[Problem] To provide a film for protecting a polarizer, which is capable of preventing the occurrence of unevenness in a polarizing plate. [Solution] The present invention provides a film for protecting a polarizer, which contains a cellulose ester resin substituted with an acyl group having 3-7 carbon atoms, an acrylic resin and a nitrogen-containing heterocyclic compound that contains at least one ring selected from among a pyrazole ring, a triazole ring and an imidazole ring. Le problème décrit par l'invention est de pourvoir à un film qui permet de protéger un polarisant et qui peut empêcher l'apparition d'une irrégularité dans une plaque de polarisation. La solution selon l'invention porte sur un film qui permet de protéger un polarisant et qui contient une résine d'ester de cellulose substituée par un groupe acyle comportant 3 à 7 atomes de carbone, une résine acrylique, et un composé hétérocyclique contenant de l'azote qui comprend au moins un cycle choisi parmi un cycle pyrazole, un cycle triazole et un cycle imidazole. 【課題】偏光板のムラ発生を防止し得る偏光子保護用フィルムを提供する。 【解決手段】本発明によれば、炭素数３～７のアシル基で置換されたセルロースエステル樹脂と、アクリル樹脂と、ピラゾール環、トリアゾール環およびイミダゾール環の少なくとも一種を含む含窒素複素環化合物と、を含む偏光子保護用フィルムが提供される。