Protective film, polarizing plate, and display device comprising same

The present invention relates to a protective film, a polarizing plate, and a display, wherein the protective film comprises a first polyester layer and a second polyester layer, and may be usually used as a protective film for a polarizing plate by having an in-plane phase difference of 300 nm or l...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KWAK, KI-YUEL, LEE, SECHUL, LEE, JUNG KYU, YU, HO JIN, HEO, YOUNG MIN, LEE, JANG WON, JEONG, DAWOO, LEE, SEUNGWON, KI, JUNG HEE, KIM, SOO HEE, DAN, KYUNG SIK
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	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 LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention relates to a protective film, a polarizing plate, and a display, wherein the protective film comprises a first polyester layer and a second polyester layer, and may be usually used as a protective film for a polarizing plate by having an in-plane phase difference of 300 nm or less and a thickness direction phase difference of 2,400 nm or less, having excellent heat resistance and hydrolysis resistance, having no observed rainbow stain, etc., and having improved optical properties.