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    • 7. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US08687148B2
    • 2014-04-01
    • US12914915
    • 2010-10-28
    • Hidenao KubotaHiroshi IwasaKoichi Sakita
    • Hidenao KubotaHiroshi IwasaKoichi Sakita
    • G02F1/1335
    • G02B6/0083G02B6/0021G02B6/0068G02F1/133603G02F1/133611
    • The present invention enables a liquid crystal display device using LEDs as a light source to reduce uneven brightness, increase efficiency of heat discharged from the LEDs, and provide area brightness control. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide panel and a plurality of LEDs arranged on a line. The light guide panel includes a concave portion extending in a longitudinal direction of the light guide panel. A large number of LEDs are placed in the concave portion of the light guide panel. The plurality of LEDs arranged on a line emit light alternately in opposite directions. This configuration allows for uniform brightness distribution without forming a large number of concave portions in the light guide panel. Further, this configuration also allows for area brightness control by controlling a large number of LEDs by group.
    • 本发明使得能够使用LED作为光源的液晶显示装置来减少不均匀的亮度,提高从LED排出的热量的效率,并提供区域亮度控制。 液晶显示装置包括液晶显示面板和背光源。 背光源包括导光板和布置在一条线上的多个LED。 导光板包括在导光板的纵向方向上延伸的凹部。 大量的LED被放置在导光板的凹部中。 布置在线上的多个LED在相反的方向上交替发光。 这种构造允许均匀的亮度分布而不在导光板中形成大量的凹部。 此外,该配置还可以通过按组控制大量LED来实现区域亮度控制。