A liquid crystal display device with high visibility and a backlight device for implementing the liquid crystal display device are provided. A backlight device (100) for irradiating light to a back surface of a liquid crystal panel (19) in a liquid crystal display device 101 includes: light sources (45); a substrate (51); and a plate-like optical member (29) through which a part of light emitted by the light sources (45) is transmitted. The optical member (29) includes: first region (A11) and two or more second regions (A21), wherein in the first region (A11), the light transmittance increases as separating from a mounting position of one light source (45), and in the second regions (A21), the light transmittance increases as approaching an outer peripheral portion from a central portion of the optical member (29) in a predetermined direction in places in contact with another adjacent second region (A21).


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    Title :

    BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE


    Contributors:
    ITO TATSUYA (author)

    Publication date :

    2020-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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