According to the present invention, in a method for manufacturing a window cover for a display device, the window cover is manufactured by injection compression molding, wherein an injection material has a melt index of 30 to 50 cm^3/10min and an impact strength of 50 to 60 kJ/m^2. Accordingly, the present invention can reduce the overall retardation value while reducing generation of dust. The plane-side retardation value of the window cover manufactured by the manufacturing method of the present invention is 50 nm or less, and the 45°-side retardation value thereof is 270 nm or less.
본 발명의 디스플레이 장치용 윈도우 커버의 제조 방법은 사출 압축 성형에 의해 제조되며, 사출재는 멜트 인덱스가 30~50cm3/10min, 충격 강도가 50~60kJ/m2 인 값을 가진다. 본 발명은 이에 따라 분진의 발생을 줄이면서도 전체적인 리타데이션 값을 저감할 수 있다. 본 발명의 제조 방법으로 제조된 윈도우 커버의 평면측 리타데이션 값은 50nm 이하이고, 45°측의 리타데이션 값은 270nm 이하이다.
Manufacturing method of Window cover for display device and window cover
디스플레이 장치용 윈도우 커버의 제조 방법 및 디스플레이 장치용 윈도우 커버
2022-03-16
Patent
Electronic Resource
Korean
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand |
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