公开(公告)号：US20110228196A1

公开(公告)日：2011-09-22

申请号：US12914915

申请日：2010-10-28

申请人： Hidenao KUBOTA ,  Hiroshi Iwasa ,  Koichi Sakita

发明人： Hidenao KUBOTA ,  Hiroshi Iwasa ,  Koichi Sakita

IPC分类号： G02F1/1335 ,  F21V8/00

CPC分类号： G02B6/0083 ,  G02B6/0021 ,  G02B6/0068 ,  G02F1/133603 ,  G02F1/133611

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20110316766A1

公开(公告)日：2011-12-29

申请号：US13091105

申请日：2011-04-20

申请人： Hidenao KUBOTA ,  Satoshi Ouchi ,  Hiroshi Iwasa ,  Mayumi Nagayoshi ,  Hajime Inoue

发明人： Hidenao KUBOTA ,  Satoshi Ouchi ,  Hiroshi Iwasa ,  Mayumi Nagayoshi ,  Hajime Inoue

IPC分类号： G09G3/36 ,  F21V7/22

CPC分类号： G02B6/0091 ,  G02B6/0021 ,  G02B6/0046 ,  G02B6/0055 ,  G02B6/008 ,  G02B6/0083 ,  H01L33/486 ,  H01L2924/0002 ,  H01L2924/00

摘要： A cross section of each divided light guiding plate is formed in a wedge shape, a step is formed at a portion of each divided light guiding plate where LEDs are arranged, and holes used for accommodating the LEDs are formed at the step. A plated face is formed on a lower face of each LED, and is coupled to a wiring substrate through solder. Each LED includes a light-emitting face, a lower frame, and an upper frame. The height of the lower frame of each LED is larger than the height of the upper frame, so that a lower end of the light-emitting face of each LED can be always located higher than a lower end of the divided light guiding plate.

摘要翻译： 每个分开的导光板的横截面形成为楔形，在每个划分的导光板的布置有LED的部分处形成台阶，并且在该步骤形成用于容纳LED的孔。 在每个LED的下表面上形成电镀面，并通过焊料与布线基板耦合。 每个LED包括发光面，下框架和上框架。 每个LED的下框架的高度大于上框架的高度，使得每个LED的发光面的下端总是位于比分割的导光板的下端更高的位置。

公开(公告)号：US20100245711A1

公开(公告)日：2010-09-30

申请号：US12615364

申请日：2009-11-10

申请人： Hidenao KUBOTA ,  Seiji Murata ,  Satoshi Ouchi ,  Yoshiharu Yamashita ,  Nobuo Masuoka

发明人： Hidenao KUBOTA ,  Seiji Murata ,  Satoshi Ouchi ,  Yoshiharu Yamashita ,  Nobuo Masuoka

IPC分类号： G02F1/1335

CPC分类号： G02F1/133603 ,  G02F1/133611 ,  G02F2001/133607

摘要： In a liquid crystal display device having a direct-lighting backlight using LEDs as a light source, the number of LEDs is reduced without causing unevenness in brightness. An LED is disposed under a cylindrical lens to be closer to one end of the lens than a middle part of the lens. Light emitted from the LED is outputted, as diffused light, upward from an end diffusion surface of the lens. A portion of the top surface of the lens makes up a total reflection surface to reflect light emitted from the LED and thereby cause the reflected light to head for the other end of the lens. Diffusion surfaces formed on the top surface and the bottom surface of the lens radiate diffused light upward of the lens, causing uniform light to be radiated from the whole top surface of the lens.

摘要翻译： 在具有使用LED作为光源的直接照明背光的液晶显示装置中，LED的数量减少而不会引起亮度不均匀。 LED被设置在柱面透镜下方以比透镜的中间部分更靠近透镜的一端。 从LED发射的光作为漫射光从透镜的端部扩散表面向上输出。 透镜的上表面的一部分构成全反射面，以反射从LED发出的光，从而使反射的光头朝向透镜的另一端。 形成在透镜的顶表面和底表面上的扩散表面将透镜的光向上扩散到透镜的上方，导致从透镜的整个顶表面辐射均匀的光。

公开(公告)号：US20110255029A1

公开(公告)日：2011-10-20

申请号：US13089288

申请日：2011-04-18

申请人： Hidenao KUBOTA ,  Satoshi Ouchi

发明人： Hidenao KUBOTA ,  Satoshi Ouchi

IPC分类号： G02F1/13357

CPC分类号： G02B6/0078 ,  G02B6/008

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20130169905A1

公开(公告)日：2013-07-04

申请号：US13523587

申请日：2012-06-14

申请人： SATOSHI OUCHI ,  Hidenao KUBOTA ,  Mayumi NAGAYOSHI ,  Makoto TSUMURA

发明人： SATOSHI OUCHI ,  Hidenao KUBOTA ,  Mayumi NAGAYOSHI ,  Makoto TSUMURA

IPC分类号： G02F1/1335 ,  F21V13/02

CPC分类号： G02F1/133605 ,  F21V13/02 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133611

摘要： A backlight device, for irradiating lights on a liquid crystal panel, comprises plural numbers of backlight blocks, each backlight block has a sheet-like reflection member (19), which is disposed on a bottom surface of the backlight block, a plate-like optical element (2), provided facing to the reflection member and disposed separating in direction perpendicular to a light irradiating surface of the backlight from the reflection member, and LEDs (7), disposed within a space between the optical element and the reflection member, for emitting the lights in direction in parallel with the light irradiating surface of the backlight.

摘要翻译： 一种用于在液晶面板上照射光的背光装置包括多个背光块，每个背光块具有布置在背光块的底面上的片状反射构件（19），板状反射构件 光学元件（2），其面向所述反射构件设置，并且与所述反射构件的与所述背光的光照射面垂直的方向分离，以及配置在所述光学元件与所述反射构件之间的空间内的LED（7） 用于与背光的光照射表面平行地发射光。

公开(公告)号：US20100110329A1

公开(公告)日：2010-05-06

申请号：US12608083

申请日：2009-10-29

申请人： Hidenao KUBOTA ,  Nobuo Masuoka

发明人： Hidenao KUBOTA ,  Nobuo Masuoka

IPC分类号： G02F1/1333 ,  G02F1/13357

CPC分类号： G02F1/133615 ,  G02B6/0048 ,  G02B6/0068

摘要： In order to achieve a liquid crystal display device for TV with a reduced thickness, light weight, and uniform brightness, a liquid crystal display panel and a backlight are housed in a mold. In the backlight, light emitting diodes are provided in a frame-like flexible wiring substrate, in which plural the light emitting diodes are provided on each of four side surfaces of a light guide panel. A distance between the light emitting diodes in the central portion of each side of the light guide panel is small, while a distance in the corners of each side is large.

摘要翻译： 为了实现具有减小的厚度，重量轻和均匀亮度的TV的液晶显示装置，液晶显示面板和背光被容纳在模具中。 在背光源中，发光二极管设置在框状柔性布线基板中，其中多个发光二极管设置在导光板的四个侧面中的每一个上。 导光板的每一侧的中心部分的发光二极管之间的距离较小，而每侧的角部的距离较大。

公开(公告)号：US20110292018A1

公开(公告)日：2011-12-01

申请号：US13093667

申请日：2011-04-25

申请人： Hidenao KUBOTA ,  Yasutaka Tsuru

发明人： Hidenao KUBOTA ,  Yasutaka Tsuru

IPC分类号： G06F3/038 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2360/144 ,  G09G2360/16

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20110286211A1

公开(公告)日：2011-11-24

申请号：US13090243

申请日：2011-04-19

申请人： Hidenao KUBOTA

发明人： Hidenao KUBOTA

IPC分类号： F21S10/02 ,  F21V7/04 ,  F21V8/00

CPC分类号： H05B33/0857 ,  F21Y2105/10 ,  F21Y2115/10 ,  H05B33/0803

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20100296026A1

公开(公告)日：2010-11-25

申请号：US12782082

申请日：2010-05-18

申请人： Hidenao KUBOTA ,  Satoshi Ouchi

发明人： Hidenao KUBOTA ,  Satoshi Ouchi

IPC分类号： G02F1/13357

CPC分类号： G02B6/0068 ,  G02B6/0046 ,  G02B6/0073 ,  G02B6/008 ,  G02F1/133615

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20090167643A1

公开(公告)日：2009-07-02

申请号：US12397441

申请日：2009-03-04

申请人： Hidenao KUBOTA ,  Hirofumi SAKAMOTO ,  Masahiko UMEDA ,  Masatoshi SUDO

发明人： Hidenao KUBOTA ,  Hirofumi SAKAMOTO ,  Masahiko UMEDA ,  Masatoshi SUDO

IPC分类号： G09G3/28

CPC分类号： G09G3/2051 ,  G09G3/2022 ,  G09G3/2077 ,  G09G3/298 ,  G09G2310/066 ,  G09G2320/0271 ,  G09G2320/043 ,  G09G2320/048 ,  G09G2320/0666 ,  G09G2340/0428

摘要： The initial color temperature setting can change when a plasma display panel (PDP) is driven for a long period of time. One cause is due to the non-uniform deterioration of red, green, and blue fluorescent materials due to the ultraviolet rays discharged during operation of the panel. Color temperature correction is performed by setting the numbers of discharge pulses for fluorescent materials in accordance with a discharge pulse number correction curve with respect to the cumulative elapsed driven time of the PDP.

摘要翻译： 当等离子体显示面板（PDP）长时间驱动时，初始色温设置可能会改变。 一个原因是由于在面板操作期间排出的紫外线，红，绿和蓝荧光材料的不均匀劣化。 通过根据相对于PDP的累积经过驱动时间的放电脉冲数校正曲线设定荧光材料的放电脉冲数来进行色温校正。