In the method of manufacturing a window cover for a display device of the present invention, the window cover is manufactured by injection compression molding. A window cover having a reduced retardation value can be manufactured by adjusting a compression factor. The plane-side retardation value of the window cover manufactured by the manufacturing method of the present invention is 50 nm or less. The 45 degree side retardation value is 270 nm or less. According to the present invention, retardation can be reduced by controlling an injection speed when manufacturing the window cover.

    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 사출 속도를 조절함으로써 리타데이션을 저감시킬 수 있다.


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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


    Contributors:
    LEE IN HO (author) / HONG SEUNG HEE (author) / JANG DONG SIK (author)

    Publication date :

    2022-03-16


    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




    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


    Manufacturing method of Window cover for display device and window cover

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

    Free access