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    • 1. 发明申请
    • ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE
    • 照明装置和液晶显示装置
    • US20110109836A1
    • 2011-05-12
    • US13002535
    • 2009-04-22
    • Atsuyuki TanakaTakeshi MasudaYuhsaku Ajichi
    • Atsuyuki TanakaTakeshi MasudaYuhsaku Ajichi
    • G02F1/1335F21V8/00
    • G02B6/0078G02B6/0016G02B6/0046G02B6/0068G02B6/008G02F1/133603G02F1/133615
    • A backlight (illumination device) (2) of the present invention includes a plurality of light sources (5) and a plurality of light guides (7, 17, . . . ) that allow light entered into the light guides from the plurality of light sources (5) to be emitted from surfaces of the plurality of light guides (7, 17 . . . ). Each of the light guides (7, 17, . . . ) includes: a light emitting section (7b, 17b, . . . ) that has a light emitting surface (7a); and a light guide section (7c) that guides, to the light emitting section (7b, 17b, . . . ), light entered into the light guides from the plurality of light sources (5). Each of the light guides (7, 17, . . . ) is also arranged such that the light emitting section (17b) of the light guide (17) that is adjacent to the light guide (7) overlaps the light guide section (7c) of the light guide (7). An edge surface (7e) of the light emitting section (17b) of the light guide (17) that overlaps the light guide (7) has concaved and/or convexed shape. The concaved and/or convexed shape serves as a light intensity adjusting section that reduces light transmission quantity.
    • 本发明的背光(照明装置)(2)包括多个光源(5)和多个光导(7,17),其允许从多个光入射到光导中的光 源(5)从多个光导(7,17 ...)的表面发射。 每个光导(7,17)包括:具有发光表面(7a)的发光部分(7b,17b ...); 以及向所述发光部(7b,17b ...)引导从所述多个光源(5)入射到所述导光体的光的导光部(7c)。 每个导光体(7,17)也布置成使得与导光体(7)相邻的导光体(17)的发光部分(17b)与导光部分(7c)重叠 )的光导(7)。 与导光体(7)重叠的导光体(17)的发光部(17b)的边缘面(7e)具有凹凸形状。 凹凸形状用作减少光透射量的光强度调节部。
    • 3. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US08063922B2
    • 2011-11-22
    • US11989956
    • 2006-05-23
    • Takeshi MasudaAtsuyuki TanakaYukihiro SumidaTokihiko Shinomiya
    • Takeshi MasudaAtsuyuki TanakaYukihiro SumidaTokihiko Shinomiya
    • G09G5/10
    • G09G3/342G09G2300/023G09G2310/024G09G2320/0247G09G2320/064G09G2320/0646G09G2360/16
    • A control circuit changes the ratio of an illumination period to a non-illumination period in a frame period of a backlight according to a gradation level in the one frame period of an image displayed on a liquid crystal panel in such a manner that the higher the gradation level, the backlight illumination control circuit increases the ratio of the illumination period to the non-illumination period in the frame period of the backlight, and the lower the gradation level, the backlight illumination control circuit decreases the ratio of the illumination period to the non-illumination period in the frame period of the backlight and thereby controls illumination intensity toward the liquid crystal panel. A time center of illumination intensity in each one frame period of the backlight is controlled in order that the time center exists in a constant temporal position from the beginning of each frame period.
    • 控制电路根据在液晶面板上显示的图像的一个帧周期中的灰度级改变背光源的帧周期中的照明周期与非照明期间的比例,使得 灰度级,背光照明控制电路增加背光源的帧周期中的照明期间与非照明期间的比例,灰度级越低,背光照明控制电路将照明期间的比例降低到 从而控制朝向液晶面板的照射强度。 控制背光的每一帧周期中的照明强度的时间中心,以便从每个帧周期的开始起,时间中心存在于恒定的时间位置。
    • 10. 发明申请
    • Liquid crystal display Device
    • 液晶显示装置
    • US20100156964A1
    • 2010-06-24
    • US11989956
    • 2006-05-23
    • Takeshi MasudaAtsuyuki TanakaYukihiro SumidaTokihiko Shinomiya
    • Takeshi MasudaAtsuyuki TanakaYukihiro SumidaTokihiko Shinomiya
    • G09G3/36G09G5/10
    • G09G3/342G09G2300/023G09G2310/024G09G2320/0247G09G2320/064G09G2320/0646G09G2360/16
    • A backlight illumination control circuit changes the ratio of an illumination period BL to a non-illumination period in a frame period V of a backlight according to a gradation level in the one frame period V of an image displayed on a liquid crystal panel in such a manner that the higher the gradation level, the backlight illumination control circuit increases the ratio of the illumination period BL to the non-illumination period in the frame period V of the backlight, and the lower the gradation level, the backlight illumination control circuit decreases the ratio of the illumination period BL to the non-illumination period in the frame period V of the backlight and thereby controls illumination intensity toward the liquid crystal panel. A time center of illumination intensity in each one frame period V of the backlight is controlled in order that the time center exists in a constant temporal position T from the beginning of each frame period V. This realizes a liquid crystal display device being free from perceived flickers, giving a high contrast feeling, and being excellent in the performance of moving image display.
    • 背光照明控制电路根据在液晶面板上显示的图像的一个帧周期V中的灰度等级来改变背光源的帧周期V中的照明周期BL与非照明期间的比率 背光照明控制电路在背光照明的帧周期V中增加照明周期BL与非照明期间的比例以及灰度级越低,背光照明控制电路越低, 照明周期BL与背光源的帧周期V中的非照明期间的比例,从而控制朝向液晶面板的照明强度。 控制背光源的每一帧周期V中的照明强度的时间中心,以便从每个帧周期V的开始就将时间中心存在于恒定的时间位置T.这实现了一种液晶显示装置不被感知 闪烁,提供高对比度的感觉,并且在运动图像显示的性能方面是优异的。