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    • 11. 发明公开
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • EP2453296A1
    • 2012-05-16
    • EP10797120.2
    • 2010-07-06
    • Sharp Kabushiki Kaisha
    • IWASAKI, KohjiONIKI, Motoyuki
    • G02F1/133G09G3/20G09G3/34G09G3/36H01L33/00
    • G09G3/3406G02F2001/133613G09G2320/0633G09G2320/064
    • Disclosed is a liquid crystal display device with an LED backlight (light source). In the LCD device, picture quality luminance is controlled through the combination of pulse-width modulation (PWM) system and current value controlsystem, reducing the electrical power consumption associated with turning on an LED. In the LED backlight (10), the light emitting luminance of the LED is controlled by both PWM, which modifies a duty that indicates the per-cycle lighting time of a pulse, which turns the LED on/off, and also by current value control, which selects the value of the current supplied to the LED from a plurality of set values. At least one of the plurality of set values is a predetermined current value at which duty reaches a maximum value at the maximum luminance value used in a specified picture quality mode of the picture quality modes established in the liquid crystal display device (1). In the aforementioned specified picture quality mode, the greatest luminance value to be used is smaller than at least the greatest luminance value used in other specified picture quality modes.
    • 公开了一种具有LED背光源(光源)的液晶显示装置。 在LCD设备中,通过脉宽调制(PWM)系统和电流值控制系统的组合来控制图像质量亮度,从而减少与打开LED相关的电力消耗。 在LED背光源(10)中,LED的发光亮度由两个PWM进行控制,这两个PWM修改指示脉冲的每个周期发光时间的占空比,该占空比指示LED打开/关闭,并且还由当前值 控制,其从多个设定值中选择提供给LED的电流值。 多个设定值中的至少一个是在液晶显示装置(1)中建立的图像质量模式的指定图像质量模式中使用的最大亮度值处占空比达到最大值的预定电流值。 在上述特定图像质量模式中,要使用的最大亮度值至少小于在其他指定图像质量模式中使用的最大亮度值。
    • 13. 发明公开
    • Field sequential color display system having multiple segmented backlight
    • Feldsequenzielles farbiges Anzeigesystem mit einem mehrfachen segmentiertenRücklicht
    • EP2439729A2
    • 2012-04-11
    • EP11194583.8
    • 2007-05-14
    • Samsung Electronics Co., Ltd.Brown Elliot, Candice HellenHiggins, Michael Francis
    • Brown Elliott, Candice HellenHiggins, Michael Francis
    • G09G3/36G09G3/34
    • G09G3/3426G02F1/133621G02F2001/133613G02F2001/133622G02F2201/52G09G3/2011G09G3/2081G09G3/3607G09G5/06G09G2300/0452G09G2310/0235G09G2320/0242G09G2320/0276G09G2320/0646G09G2340/06G09G2360/16
    • A display system comprises a spatial light modulator for displaying an output color image formed from an input signal comprising a set of color input values; the spatial light modulator substantially comprising a set of individually controllable transmissive elements, a plurality of individually addressable colored light emitters disposed as a backlight to provide light for forming a color image on the spatial light modulator, each light emitter producing light in one of a plurality of primary colors; for a plurality of regions, said regions comprising a set of point spread functions of a set of said light emitter, a first mapping operation for selecting a set of virtual primaries that bound each color input value within each said region, said virtual primaries comprising a plurality of intensities of said plurality of said light emitters within said set of pointspread functions; field sequential control circuitry for controlling the duration and illumination of said virtual primaries over a set of fields comprising an intermediate color signal formed by said light emitters within each said region to produce an intermediate color image onto said spatial light modulator; and circuitry for controlling said set of transmissive elements within each said region to modulate said intermediate color image to produce said output color image.
    • 显示系统包括空间光调制器,用于显示由包括一组颜色输入值的输入信号形成的输出彩色图像; 所述空间光调制器基本上包括一组可独立控制的透射元件,多个可单独寻址的彩色光发射器,被布置为背光以提供用于在所述空间光调制器上形成彩色图像的光,每个发光器产生多个 原色; 对于多个区域,所述区域包括一组所述光发射器的一组点扩散函数,用于选择在每个所述区域内限定每个颜色输入值的一组虚拟基色的第一映射操作,所述虚拟基色包括 所述多个所述发光体在所述一组点扩散函数内的多个强度; 场顺序控制电路,用于在一组场中控制所述虚拟原色的持续时间和照明,包括由每个所述区域内的所述光发射器形成的中间色彩信号,以在所述空间光调制器上产生中间彩色图像; 以及用于控制每个所述区域内的所述一组透射元件以调制所述中间彩色图像以产生所述输出彩色图像的电路。
    • 18. 发明公开
    • LIGHTING APPARATUS, DISPLAY UNIT, AND TELEVISION RECEIVER
    • BELEUCHTUNGSVORRICHTUNG,ANZEIGEINHEIT UNDFERNSEHEMPFÄNGER
    • EP2161493A1
    • 2010-03-10
    • EP08738761.9
    • 2008-03-24
    • Sharp Kabushiki Kaisha
    • KUROMIZU, YasumoriYOKOTA, MasashiSHIMIZU, Masaki
    • F21S2/00F21V7/00F21V7/22G02F1/13357F21Y103/00
    • G02F1/133604G02F1/133605G02F1/133611G02F2001/133613
    • The present invention includes a plurality of tubular light sources 17 arranged parallel to one another, and a light reflecting member 40 arranged on the side of the tubular light sources 17 that corresponds to the opposite side of the light emitting side. The tubular light sources 17 are arranged so that a narrow-interval area 17A where the arrangement interval thereof is relatively narrow and a wide-interval area 17B where the arrangement interval is relatively wide are provided. The light reflecting member 40 includes an opening section 50 located directly below the tubular light sources 17. The opening section 50 is provided so that the opening ratio as a ratio between a total area of the light reflecting member 40 and areas of the opening section 50 is higher at an area of the light reflecting member 40 corresponding to the narrow-interval area 17A than at an area of the light reflecting member 40 corresponding to the wide-interval area 17B.
    • 本发明包括彼此平行布置的多个管状光源17和布置在管状光源17的对应于发光侧的相对侧的一侧的光反射部件40。 管状光源17被布置成使得其布置间隔相对窄的窄间隔区域17A和布置间隔相对较宽的宽间隔区域17B。 光反射构件40包括位于管状光源17正下方的开口部50.开口部50设置为使得作为光反射部件40的总面积与开口部50的面积之比的开口率 在对应于窄间隔区域17A的光反射构件40的区域处比对应于宽间隔区域17B的光反射构件40的区域高。