公开(公告)号：US20130010213A1

公开(公告)日：2013-01-10

申请号：US13611600

申请日：2012-09-12

申请人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

发明人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

IPC分类号： H04N9/30

CPC分类号： G09G3/3607 ,  G02F1/133514 ,  G02F2201/52 ,  G09G2300/0447 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06

摘要： A signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference Δu′v′=((u′−u60′)2+(v′−v60′)2) is 0.03 or less, the color difference Δu′v′ being defined by CIE1976 chromaticity coordinates (u′, v′) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60′, v60′) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

摘要翻译： 公开了适用于多原色液晶显示装置的信号转换电路和具有这种信号转换电路的多原色液晶显示装置。 根据本发明的一个实施例的信号转换电路用于多原色液晶显示装置，并将输入视频信号转换成对应于四个或更多原色的多原色信号。 当产生用于显示暗皮肤的多原色信号时，根据本发明的实施例的信号转换电路将转换应用于视频信号，使得色差Dgr u'v'=（（u'-u60'）2 +（v'-v60'）2）为0.03以下，由CIE1976色度坐标（u'，v'）定义的色差＆Dgr; u'v'表示从正面观察像素时的色度， 表示当从60°倾斜方向观看像素时的色度的CIE1976色度坐标（u60'，v60'）。

公开(公告)号：US20100309107A1

公开(公告)日：2010-12-09

申请号：US12867691

申请日：2008-10-08

申请人： Takao Muroi ,  Katsuteru Hashimoto ,  Katsuya Otoi ,  Kohji Fujiwara

发明人： Takao Muroi ,  Katsuteru Hashimoto ,  Katsuya Otoi ,  Kohji Fujiwara

IPC分类号： G09G3/36

CPC分类号： G09G3/3413 ,  G02F1/133603 ,  G02F1/133609 ,  G02F2001/133601 ,  G02F2001/133624 ,  G09G3/3426 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/064 ,  G09G2320/0666 ,  G09G2360/16

摘要： It is an object of the present invention to provide a liquid crystal display device with high color reproduction ability even when an area active backlight is driven. A liquid crystal display device (1) of the present invention drives a liquid crystal panel (2) and a backlight device (3), respectively, using a video signal input from outside. In the backlight device (3), a plurality of illuminating areas (Ha) are set on LED substrates (7) with respect to a plurality of display areas provided on the liquid crystal panel (2), and area active backlight drive is performed, which lights up light-emitting diodes (8) in the unit of the illuminating areas. When a backlight data processing part (lighting control part) (15) determines that a brightness signal value indicated for a blue light-emitting diode (light source of a predetermined color) (8b) is larger than brightness signal values indicated for other light-emitting diodes (8r, 8g), and determines that a value obtained by multiplying the brightness signal value indicated for the blue light-emitting diode (8b) by a predetermined ratio is equal to or more than the bright signal values indicated for the other light-emitting diodes (8r, 8g), the backlight data processing part (15) lights up the other light-emitting diodes (8r, 8g), using the brightness signal value indicated for the blue light-emitting diode (8b).

摘要翻译： 本发明的目的是提供一种即使在驱动区域活动背光时也具有高色彩还原能力的液晶显示装置。 本发明的液晶显示装置（1）使用从外部输入的视频信号分别驱动液晶面板（2）和背光装置（3）。 在背光装置（3）中，相对于设置在液晶面板（2）上的多个显示区域，在LED基板（7）上设置多个照明区域（Ha），进行区域主动背光驱动， 其以照明区域为单位照亮发光二极管（8）。 背光数据处理部（点亮控制部）15判定为蓝色发光二极管（规定颜色的光源）（8b）指示的亮度信号值大于其他发光二极管 发光二极管（8r，8g），并且确定通过将针对蓝色发光二极管（8b）指示的亮度信号值乘以预定比率而获得的值等于或大于针对其他光指示的亮信号值 使用为蓝色发光二极管（8b）指示的亮度信号值，背光源数据处理部（15）使发光二极管（8r，8g）照亮其他发光二极管（8r，8g）。

公开(公告)号：US20100253711A1

公开(公告)日：2010-10-07

申请号：US12741056

申请日：2008-10-09

申请人： Takao Muroi

发明人： Takao Muroi

IPC分类号： G09G5/10

CPC分类号： G09G3/3426 ,  G02F1/133603 ,  G02F1/133609 ,  G09G3/3413 ,  G09G5/026 ,  G09G2320/0646 ,  G09G2340/06 ,  G09G2360/145 ,  G09G2360/16

摘要： A liquid crystal panel 10 has color filters for RGB colors, i.e., three colors, and a backlight 20 includes a plurality of LEDs for each of four colors (RGB and cyan) independently controllable for luminance. A backlight data processing portion 33 divides an output signal from a color signal correction portion 32 into a plurality of areas and calculates luminance values for LEDs corresponding to each area based on a gradation in that area, thereby obtaining backlight data for four or more colors for use in driving the backlight 20. A video data processing portion 34 performs color correction on an output signal from the color signal correction portion 32 while referencing the backlight data, thereby obtaining video data for three colors for use in driving the liquid crystal panel 10. Thus, color crosstalk can be prevented, thereby achieving a high-definition multi-primary color display and precise color reproduction.

摘要翻译： 液晶面板10具有用于RGB颜色的彩色滤光片，即三种颜色，并且背光源20包括可独立控制亮度的四种颜色（RGB和青色）中的每一种的多个LED。 背光数据处理部分33将来自颜色信号校正部分32的输出信号划分成多个区域，并且基于该区域中的灰度来计算对应于每个区域的LED的亮度值，从而获得用于四种或更多种颜色的背光数据 用于驱动背光源20.视频数据处理部分34参照背光数据对来自颜色信号校正部分32的输出信号进行颜色校正，从而获得用于驱动液晶面板10的三种颜色的视频数据。 因此，可以防止颜色串扰，从而实现高分辨率多原色显示和精确的色彩再现。

公开(公告)号：US08390656B2

公开(公告)日：2013-03-05

申请号：US12997645

申请日：2009-06-04

申请人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

发明人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2360/16

摘要： There is provided an image display device capable of suppressing the occurrence of a color shift while ensuring a sufficient color reproduction range. An in-area maximum luminance obtaining unit (151) divides an input image (31) into a plurality of areas and obtains, for each of RGB colors, a maximum luminance value (34) in each area. A weighting coefficient calculating unit (152) obtains the maximum luminance values (34) for the respective RGB colors for all of the areas, and determines weighting coefficients (35) which are required upon an LED luminance adjustment process, based on an mean value of the maximum luminances values (34) for each color. An LED luminance adjusting unit (153) adjusts the luminances of respective RGB color LEDs in each area to suppress the occurrence of a color shift, based on the maximum luminance values (34) obtained by the in-area maximum luminance obtaining unit (151) and the weighting coefficients (35) determined by the weighting coefficient calculating unit (152).

摘要翻译： 提供了一种能够在确保足够的色彩再现范围的同时抑制色移的发生的图像显示装置。 获取区域内最大亮度获取单元（151）将输入图像（31）划分成多个区域，并且对于RGB颜色中的每一个，获得每个区域中的最大亮度值（34）。 加权系数计算单元（152）针对所有区域获得各RGB颜色的最大亮度值（34），并根据LED亮度调整处理的平均值确定LED亮度调整处理所需的加权系数（35） 每种颜色的最大亮度值（34）。 LED亮度调整单元（153）基于由区域内最大亮度获取单元（151）获得的最大亮度值（34）来调整各区域中的各RGB颜色LED的亮度以抑制色移的发生， 和由加权系数计算单元（152）确定的加权系数（35）。

公开(公告)号：US07256774B1

公开(公告)日：2007-08-14

申请号：US10700463

申请日：2003-11-05

申请人： Takahiro Senda ,  Takao Muroi

发明人： Takahiro Senda ,  Takao Muroi

IPC分类号： G09G5/00 ,  G09G3/10

CPC分类号： G09G3/3233 ,  G09G3/2022 ,  G09G2300/0465 ,  G09G2300/0842 ,  G09G2300/0861 ,  H01L27/3244

摘要： Each pixel includes: a first wiring for allowing a current to flow to an organic EL element; a first TFT element, provided in series to the organic EL element so as to be positioned in a path for allowing the current to flow from the first wiring, which has a control terminal for controlling conductance of the first TFT element; a second TFT element, provided in series to the organic EL element and the first TFT element so as to be positioned in the path, which has a control terminal for allowing/disallowing conduction; a capacitor which applies a voltage corresponding to stored electric charge to the control terminal of the first TFT element as a control voltage for controlling the conductance of the first TFT element; a third TFT element, provided in a path for supplying the electric charge to the capacitor, which has a control terminal for allowing/disallowing conduction, said third TFT element causing the capacitor to store the electric charge by disallowing conduction; a second wiring which applies a control voltage to the control terminal of the second TFT element; and a third wiring which applies a control voltage to the control terminal of the third TFT element. Thus, it is possible to enlarge an area of a transparent electrode.

摘要翻译： 每个像素包括：用于允许电流流向有机EL元件的第一布线; 与第一TFT元件串联设置的第一TFT元件，以便位于用于允许电流从具有用于控制第一TFT元件的电导的电导的控制端的第一布线流动的路径中; 与所述有机EL元件和所述第一TFT元件串联地设置在所述路径中的第二TFT元件，所述第二TFT元件具有用于允许/不允许导通的控制端子; 将对应于存储的电荷的电压施加到第一TFT元件的控制端子的电容器作为用于控制第一TFT元件的电导的控制电压; 第三TFT元件，设置在用于向电容器提供电荷的路径中，该电路具有用于允许/不允许导通的控制端子，所述第三TFT元件使电容器通过不允许导通来存储电荷; 第二布线，其向第二TFT元件的控制端施加控制电压; 以及向第三TFT元件的控制端子施加控制电压的第三布线。 因此，可以扩大透明电极的面积。

公开(公告)号：US07301513B2

公开(公告)日：2007-11-27

申请号：US10872093

申请日：2004-06-17

申请人： Takao Muroi ,  Takahiro Senda

发明人： Takao Muroi ,  Takahiro Senda

IPC分类号： G09G3/30

CPC分类号： H01L27/12 ,  G09G3/3233 ,  G09G2300/0417 ,  G09G2300/0842 ,  G09G2320/043 ,  H01L27/3244

摘要： A display element is configured as follows in order to prolong the display lifetime of an electro-optical element without inserting a resistance element or lowering the numerical aperture due to a change in layout. The display element includes an organic EL element, which is an electro-optical element, a power source line electrode, a scanning signal line electrode, a data signal line electrode, a common electrode, an auxiliary capacitance, a current control TFT for controlling the current flowing through the organic EL element, and a data voltage control TFT for controlling the timing at which current flows through the organic EL element. The conductive resistance of the current control TFT is set such that 0.1≦β≦7.0, where β(=Vr/Vel) is a ratio of a voltage Vr applied across the current control TFT to a voltage Vel applied across the organic EL element. Thus, the speed of the temporal change of the luminance of the organic EL element is slowed down, and the display lifetime is prolonged.

摘要翻译： 显示元件如下配置，以便延长电光元件的显示寿命而不插入电阻元件或由于布局的变化而降低数值孔径。 显示元件包括作为电光元件的有机EL元件，电源线电极，扫描信号线电极，数据信号线电极，公共电极，辅助电容，用于控制 流过有机EL元件的电流，以及用于控制电流流经有机EL元件的定时的数据电压控制TFT。 电流控制TFT的导电电阻被设定为使得0.1≤β≤7.0，其中β（= Vr / Vel）是施加在电流控制TFT上的电压Vr与施加在有机EL上的电压Vel的比 元件。 因此，有机EL元件的亮度的时间变化的速度变慢，显示寿命延长。

公开(公告)号：US08654116B2

公开(公告)日：2014-02-18

申请号：US13611600

申请日：2012-09-12

申请人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

发明人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

IPC分类号： G06F3/038 ,  G09G5/00 ,  H04N9/30

CPC分类号： G09G3/3607 ,  G02F1/133514 ,  G02F2201/52 ,  G09G2300/0447 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06

摘要： A signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference Δu′v′=((u′−u60′)2+(v′−v60′)2) is 0.03 or less, the color difference Δu′v′ being defined by CIE1976 chromaticity coordinates (u′, v′) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60′, v60′) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

摘要翻译： 公开了适用于多原色液晶显示装置的信号转换电路和具有这种信号转换电路的多原色液晶显示装置。 根据本发明的一个实施例的信号转换电路用于多原色液晶显示装置，并将输入视频信号转换成对应于四个或更多原色的多原色信号。 当产生用于显示暗皮肤的多原色信号时，根据本发明的实施例的信号转换电路将转换应用于视频信号，使得色差Deltau'v'=（（u'-u60'）2+（ v'-v60'）2）为0.03以下时，色差Deltau'v'由CIE1976色度坐标（u'，v'）定义，表示当从正面方向观察像素时的色度和CIE1976色度坐标（ u60'，v60'），表示当从60°倾斜方向观察像素时的色度。

公开(公告)号：US20110090265A1

公开(公告)日：2011-04-21

申请号：US12997645

申请日：2009-06-04

申请人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

发明人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2340/0414 ,  G09G2340/0421 ,  G09G2360/16

摘要： There is provided an image display device capable of suppressing the occurrence of a color shift while ensuring a sufficient color reproduction range. An in-area maximum luminance obtaining unit (151) divides an input image (31) into a plurality of areas and obtains, for each of RGB colors, a maximum luminance value (34) in each area. A weighting coefficient calculating unit (152) obtains the maximum luminance values (34) for the respective RGB colors for all of the areas, and determines weighting coefficients (35) which are required upon an LED luminance adjustment process, based on an mean value of the maximum luminances values (34) for each color. An LED luminance adjusting unit (153) adjusts the luminances of respective RGB color LEDs in each area to suppress the occurrence of a color shift, based on the maximum luminance values (34) obtained by the in-area maximum luminance obtaining unit (151) and the weighting coefficients (35) determined by the weighting coefficient calculating unit (152).

摘要翻译： 提供了一种能够在确保足够的色彩再现范围的同时抑制色移的发生的图像显示装置。 获取区域内最大亮度获取单元（151）将输入图像（31）划分成多个区域，并且对于RGB颜色中的每一个，获得每个区域中的最大亮度值（34）。 加权系数计算单元（152）针对所有区域获得各RGB颜色的最大亮度值（34），并根据LED亮度调整处理的平均值确定LED亮度调整处理所需的加权系数（35） 每种颜色的最大亮度值（34）。 LED亮度调整单元（153）基于由区域内最大亮度获取单元（151）获得的最大亮度值（34）来调整各区域中的各RGB颜色LED的亮度以抑制色移的发生， 和由加权系数计算单元（152）确定的加权系数（35）。

公开(公告)号：US20100321414A1

公开(公告)日：2010-12-23

申请号：US12677076

申请日：2008-09-26

申请人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

发明人： Takao Muroi ,  Kohji Fujiwara ,  Takayuki Murai

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G2320/0209 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/16

摘要： It is an object of the present invention to provide a display device that can improve the color reproductivity on a displayed image and improve the display quality. A liquid crystal display device (1) is provided with a backlight device (3) and a liquid crystal panel (2) configured to have capability of color display of information by using illumination light from the backlight device (3). The backlight device (3) has a plurality of illumination areas (Ha) with respect to a plurality of display areas provided on the liquid crystal panel (2), and light-emitting diodes (light sources) of RGB (8r, 8g, 8b) mixable with white light are provided for each illumination area (Ha). Its control part is provided with a backlight control part that determines for each of the light sources a luminance value of light emitted from each of the plural illumination areas (Ha) to a corresponding display area by using an inputted picture signal and that controls the drive of a backlight part, so that an area active backlight drive is carried out. The light-emitting diodes (light sources) of RGB (8r, 8g, 8b) have offset luminances that are set independently from each other.

摘要翻译： 本发明的目的是提供一种能够提高显示图像上的颜色再现性并提高显示质量的显示装置。 液晶显示装置（1）具备背光装置（3）和液晶面板（2），该液晶面板（2）通过使用来自背光装置（3）的照明光具有对信息进行彩色显示的能力。 背光装置（3）具有相对于设置在液晶面板（2）上的多个显示区域的多个照明区域（Ha）和RGB（8r，8g，8b）的发光二极管（光源） ）可用于每个照明区域（Ha）与白光混合。 其控制部分设置有背光控制部分，其通过使用输入的图像信号来确定每个光源的从多个照明区域（Ha）中的每一个发射到相应显示区域的光的亮度值，并且控制驱动器 的背光部件，从而进行区域主动背光驱动。 RGB（8r，8g，8b）的发光二极管（光源）具有彼此独立设置的偏移亮度。

公开(公告)号：US08294739B2

公开(公告)日：2012-10-23

申请号：US12312747

申请日：2007-11-20

申请人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

发明人： Kazunari Tomizawa ,  Tomohiko Mori ,  Shun Ueki ,  Takao Muroi

IPC分类号： G09G5/02 ,  G09G3/34 ,  G01R31/26

CPC分类号： G09G3/3607 ,  G02F1/133514 ,  G02F2201/52 ,  G09G2300/0447 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06

摘要： In one embodiment of the present invention, a signal conversion circuit is disclosed which is suitably used in a multiprimary liquid crystal display device, and a multiprimary liquid crystal display device having such a signal conversion circuit. A signal conversion circuit according to one embodiment of the present invention is for use in a multiprimary liquid crystal display device, and converts an input video signal to a multiprimary signal corresponding to four or more primary colors. When generating a multiprimary signal for displaying dark skin, the signal conversion circuit according to an embodiment of the present invention applies a conversion to the video signal so that a color difference Δu′v′=((u′−u60′)2+(v′−v60′)2) is 0.03 or less, the color difference Δu′v′ being defined by CIE1976 chromaticity coordinates (u′, v′) representing a chromaticity when the pixel is viewed from the frontal direction and CIE1976 chromaticity coordinates (u60′, v60′) representing a chromaticity when the pixel is viewed from a 60° oblique direction.

摘要翻译： 在本发明的一个实施例中，公开了适用于多原色液晶显示装置的信号转换电路和具有这种信号转换电路的多原色液晶显示装置。 根据本发明的一个实施例的信号转换电路用于多原色液晶显示装置，并将输入视频信号转换成对应于四个或更多原色的多原色信号。 当产生用于显示暗皮肤的多原色信号时，根据本发明的实施例的信号转换电路将转换应用于视频信号，使得色差Dgr u'v'=（（u'-u60'）2 +（v'-v60'）2）为0.03以下，由CIE1976色度坐标（u'，v'）定义的色差＆Dgr; u'v'表示从正面观察像素时的色度， 表示当从60°倾斜方向观看像素时的色度的CIE1976色度坐标（u60'，v60'）。