POLYMER RESIN FILM AND COVER WINDOW FOR FLEXIBLE DISPLAY DEVICE

The present invention relates to a polymer resin film including a polyamide-imide block copolymer having a weight average molecular weight of 100,000 to 800,000 and a PDI of 3 or less, having a yellowness of 3 or less, and having a 30,000 times or higher number of cycles of fracture occurring during...

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Bibliographische Detailangaben
Hauptverfasser:	CHOI HYUNGSAM, YOON HONGSIK, CHO MANKI, KIM BYUNGGUK, JANG DUK HUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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 GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a polymer resin film including a polyamide-imide block copolymer having a weight average molecular weight of 100,000 to 800,000 and a PDI of 3 or less, having a yellowness of 3 or less, and having a 30,000 times or higher number of cycles of fracture occurring during a MIT folding test, and to a cover window for a flexible display device. The polymer resin film is colorless and transparent, and has excellent mechanical properties and high elasticity. 본 발명은 10만 내지 80만의 중량평균분자량 및 3이하의 PDI를 갖는 폴리아미드-이미드 블록 공중합체를 포함하고, 3이하의 황색도를 가지며, MIT 폴딩 테스트시 파단이 발생하는 사이클 수가 3만회 이상인 고분자 수지 필름과 플렉서블 디스플레이 장치의 커버 윈도우에 관한 것이다.