본 발명의 디스플레이 장치용 윈도우 커버의 제조 방법은 윈도우 커버를 사출 압축 성형에 의해 제조하되, 압축 인자를 조절하여 리타데이션 값이 저감된 윈도우 커버를 제조할 수 있다. 본 발명의 제조 방법으로 제조된 윈도우 커버의 평면측 리타데이션 값은 50nm 이하이고, 45°측의 리타데이션 값은 270nm 이하이다. 본 발명은 윈도우 커버의 제조시 압축 속도를 조절함으로써 리타데이션을 저감시킬 수 있다.

    A manufacturing method of a window cover for a display device of the present invention is to manufacture a window cover by injection compression molding, and can improve the flatness of the window cover by adjusting temperature difference, clamping force, and holding pressure output between an upper mold and a lower mold. The present invention can improve the flatness of the window cover while maintaining birefringence performance of the window cover.


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    Title :

    Manufacturing method of Window cover for display device and window cover


    Additional title:

    디스플레이 장치용 윈도우 커버의 제조 방법 및 디스플레이 장치용 윈도우 커버


    Publication date :

    2024-05-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    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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    Manufacturing method of Window cover for display device and window cover

    LEE IN HO / HONG SEUNG HEE / JANG DONG SIK | European Patent Office | 2022

    Free access