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    • 5. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20110255029A1
    • 2011-10-20
    • US13089288
    • 2011-04-18
    • Hidenao KUBOTASatoshi Ouchi
    • Hidenao KUBOTASatoshi Ouchi
    • G02F1/13357
    • G02B6/0078G02B6/008
    • In a liquid crystal display device, two light guide plates are arranged in parallel at a predetermined distance from each other to function as a backlight. The two light guide plates are provided between a liquid crystal display panel and a circuit substrate on which LEDs are mounted. Each of the light guide plates includes a plurality of divided light guide plates. Each of the divided light guide plates is divided into a plurality of light guide plate blocks by grooves. In opposed portions of the two light guide plates, side surfaces of the light guide plates are inclined. Then, a rough surface is formed on the respective inclined surfaces. Because of this shape, light interference easily occurs between the two light guide plates. As a result, it is possible to prevent lowering of brightness in the opposed portions of the two light guide plates.
    • 在液晶显示装置中,两个导光板彼此以预定的距离平行布置,用作背光。 两个导光板设置在液晶显示面板和安装有LED的电路基板之间。 每个导光板包括多个分开的导光板。 每个分开的导光板通过凹槽分成多个导光板块。 在两个导光板的相对部分中,导光板的侧表面倾斜。 然后,在各倾斜面上形成粗糙面。 由于这种形状,两个导光板之间容易发生光干涉。 结果,可以防止两个导光板的相对部分的亮度降低。
    • 6. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20110292018A1
    • 2011-12-01
    • US13093667
    • 2011-04-25
    • Hidenao KUBOTAYasutaka Tsuru
    • Hidenao KUBOTAYasutaka Tsuru
    • G06F3/038G09G3/36
    • G09G3/3426G09G2320/0646G09G2330/021G09G2360/144G09G2360/16
    • An area control section individually sets illumination intensity (light control value) of each backlight cell corresponding to each area of the display screen. A spatial filter corrects the light control values so that spatial distribution of the light control values becomes more moderate between adjoining areas. A black area control section sets the minimum value of the light control value based on a “black area” in the screen. A power control section corrects the light control values so that power consumption of the backlight does not exceed a limit value. A shading control section corrects the light control values to relatively lower brightness in the peripheral part of the screen compared to the central part of the screen. A micro-controller switches the operations of the above light control value correcting sections according to an image display mode selected by the user.
    • 区域控制部分分别设置与显示画面的各区域对应的各背光单元的照明强度(光控制值)。 空间滤波器校正光控制值,使得光控制值的空间分布在相邻区域之间变得更温和。 黑区控制部根据画面中的“黑区”设定光控制值的最小值。 功率控制部分校正光控制值,使得背光的功耗不超过限制值。 与屏幕的中央部分相比,阴影控制部分将光控制值校正到屏幕周边部分的相对较低的亮度。 微控制器根据用户选择的图像显示模式切换上述光控制值校正部分的操作。
    • 7. 发明申请
    • LUMINAIRE
    • US20110286211A1
    • 2011-11-24
    • US13090243
    • 2011-04-19
    • Hidenao KUBOTA
    • Hidenao KUBOTA
    • F21S10/02F21V7/04F21V8/00
    • H05B33/0857F21Y2105/10F21Y2115/10H05B33/0803
    • A luminaire using LEDs emits illumination light with improved uniformity and allows selection of color temperature and a region from which light is emitted. The illumination light from the LED travels in a light guide plate and is reflected off the inner surface to output to the outside through a diffuser plate. A plurality of LEDs differing in hue is provided. An LED driver unit controls a color temperature of light to be emitted, and generates, for example, illumination light of moderate color such as an orange color. The LED driver unit switches between regions from which light is emitted, thus offering unique illumination effects and using the luminaire as an all-night lamp. The light guide plate is secured to the side opposite to the reflector sheet in order to prevent the fixing member from impairing the light uniformity.
    • 使用LED的照明器发射具有改进的均匀性的照明光,并允许选择色温和发出光的区域。 来自LED的照明光在导光板中行进并从内表面反射,通过扩散板输出到外部。 提供了不同色调的多个LED。 LED驱动器单元控制要发射的光的色温,并且产生例如中等颜色(例如橙色)的照明光。 LED驱动器单元在发射光的区域之间切换,从而提供独特的照明效果,并将照明设备用作全夜灯。 为了防止固定部件损害光的均匀性,将导光板固定在与反射板相反的一侧。
    • 8. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20110228196A1
    • 2011-09-22
    • US12914915
    • 2010-10-28
    • Hidenao KUBOTAHiroshi IwasaKoichi Sakita
    • Hidenao KUBOTAHiroshi IwasaKoichi Sakita
    • G02F1/1335F21V8/00
    • 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。
    • 9. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • US20100296026A1
    • 2010-11-25
    • US12782082
    • 2010-05-18
    • Hidenao KUBOTASatoshi Ouchi
    • Hidenao KUBOTASatoshi Ouchi
    • G02F1/13357
    • G02B6/0068G02B6/0046G02B6/0073G02B6/008G02F1/133615
    • An LCD device using LEDs as light sources provided herein is capable of reducing the manufacturing cost and the power consumption by a reduction in the number of LEDs used. A backlight according to the present invention includes LEDs mounted on a wiring board and a light guide plate having a matrix array of light guide plate blocks assigned the LEDs. The number of LEDs assigned to the block located in a peripheral area is smaller than the number assigned to the block located around the center to reduce the number of LEDs used in the backlight. If a ratio of the brightness in a peripheral area of the screen to the brightness in a central area is 60% or higher, the human eye does not perceive non-uniform luminance. Thus, the manufacturing cost and the power consumption of the LCD device can be reduced.
    • 使用这里提供的LED作为光源的LCD装置能够通过减少所使用的LED的数量来降低制造成本和功耗。 根据本发明的背光源包括安装在布线板上的LED和具有分配LED的导光板块的矩阵阵列的导光板。 分配给位于外围区域中的块的LED数量小于分配给位于中心周围的块的数量,以减少背光中使用的LED数量。 如果屏幕的周边区域的亮度与中心区域的亮度的比率为60%以上,则人眼不会感觉到不均匀的亮度。 因此,可以降低LCD装置的制造成本和功耗。