公开(公告)号：US09165494B2

公开(公告)日：2015-10-20

申请号：US13976150

申请日：2011-12-22

申请人： Yuichi Yoshida ,  Tomohiko Mori ,  Kazunari Tomizawa ,  Kohzoh Nakamura ,  Shun Ueki

发明人： Yuichi Yoshida ,  Tomohiko Mori ,  Kazunari Tomizawa ,  Kohzoh Nakamura ,  Shun Ueki

IPC分类号： G09G3/36 ,  G09G3/20 ,  H04N9/67

CPC分类号： G09G3/2003 ,  G09G3/3611 ,  G09G2300/0452 ,  G09G2320/0666 ,  G09G2340/06 ,  H04N9/67

摘要： A signal conversion circuit (20) is used for a multiple-primary color liquid crystal display device (100) which performs color display using four primary colors of red displayed by a red-sub pixel (R), green displayed by green-sub pixel (G), blue displayed by blue-sub pixel (B), and yellow displayed by yellow-sub pixel (Ye), and converts an input three-primary color video signal into a multiple-primary color video signal corresponding to four primary colors. The signal conversion circuit (20) performs signal conversion such that a gray scale level of the yellow-sub pixel (Ye) is higher than a gray scale level of the green-sub pixel (G) in at least some cases from among cases in which a red gray-scale level r, a green gray-scale level g, and a blue gray-scale level b which are displayed by the three-primary color video signal satisfy a relationship of r>g>b.

摘要翻译： 信号转换电路（20）用于使用由红色子像素（R）显示的红色的四原色进行彩色显示的多原色液晶显示装置（100），由绿色子像素显示的绿色 （G），由蓝色子像素（B）显示的蓝色，以及由黄色子像素（Ye）显示的黄色，并将输入的三原色视频信号转换成对应于四个基色的多原色视频信号 。 信号变换电路（20）进行信号变换，使得黄色子像素（Ye）的灰度级别比绿色子像素（G）的灰度级水平高于至少一些情况下的绿色子像素（G）的灰度级 由三原色视频信号显示的红色灰度级r，绿色灰度级g和蓝色灰度级b满足r> g> b的关系。

公开(公告)号：US20120313981A1

公开(公告)日：2012-12-13

申请号：US13578633

申请日：2011-02-08

申请人： Shun Ueki ,  Kohzoh Nakamura ,  Kazunari Tomizawa ,  Tomohiko Mori ,  Yuichi Yoshida

发明人： Shun Ueki ,  Kohzoh Nakamura ,  Kazunari Tomizawa ,  Tomohiko Mori ,  Yuichi Yoshida

IPC分类号： G09G5/10

CPC分类号： G09G3/3607 ,  G09G3/2003 ,  G09G2300/0452 ,  G09G2340/06

摘要： A display device (100) according to the present invention includes a pixel defined by a plurality of sub pixels. The plurality of sub pixels are a red sub pixel (R) to display red, a green sub pixel (G) to display green, a blue sub pixel (B) to display blue, and a yellow sub pixel (Ye) to display yellow. When an input signal corresponding to green of the sRGB color space is externally input, the display device (100) according to the present invention provides display by use of the green sub pixel (G) and also the yellow sub pixel (Ye). According to the present invention, a multiple primary color display device which suppresses decline of the display quality when an input signal corresponding to green of the sRGB color space is externally input is provided.

摘要翻译： 根据本发明的显示装置（100）包括由多个子像素限定的像素。 多个子像素是显示红色的红色子像素（R），显示绿色的绿色子像素（G），显示蓝色的蓝色子像素（B）和显示黄色的黄色子像素（Ye） 。 当外部输入对应于sRGB色彩空间的绿色的输入信号时，根据本发明的显示装置（100）通过使用绿色子像素（G）和黄色子像素（Ye）提供显示。 根据本发明，提供了当外部输入与sRGB色彩空间的绿色对应的输入信号时抑制显示质量下降的多原色显示装置。

公开(公告)号：US20110128309A1

公开(公告)日：2011-06-02

申请号：US13056175

申请日：2009-07-23

申请人： Akiko Miyazaki ,  Kazunari Tomizawa ,  Kozo Nakamura ,  Shun Ueki

发明人： Akiko Miyazaki ,  Kazunari Tomizawa ,  Kozo Nakamura ,  Shun Ueki

IPC分类号： G09G5/10

CPC分类号： H04N9/68 ,  G09G3/2003 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2340/06

摘要： A multi-primary color display device according to the present invention includes pixels, each having a plurality of sub-pixels. The plurality of sub-pixels include first, second, third and fourth sub-pixels for displaying first, second, third and fourth colors having first, second, third and fourth hues. The second and third hues are adjacent to the first hue on both sides thereof on an a*b* plane of an L*a*b* colorimetric system. When a color displayed by each pixel changes from black to an optimal color of the first hue, luminance values of the plurality of sub-pixels are set such that the luminance value of the first sub-pixel starts to be increased and also the luminance values of the second and third sub-pixels start to be increased at a rate of increase lower than the rate of increase of the first sub-pixel.

摘要翻译： 根据本发明的多原色显示装置包括每个具有多个子像素的像素。 多个子像素包括用于显示具有第一，第二，第三和第四色调的第一，第二，第三和第四颜色的第一，第二，第三和第四子像素。 在L * a * b *比色系统的a * b *平面上，第二和第三色调与其两侧的第一色调相邻。 当每个像素显示的颜色从黑色变化到第一色调的最佳颜色时，多个子像素的亮度值被设置为使得第一子像素的亮度值开始增加，并且亮度值 开始以比第一子像素的增加率增加的增加率增加第二和第三子像素。

公开(公告)号：US20110080520A1

公开(公告)日：2011-04-07

申请号：US12993906

申请日：2009-05-21

申请人： Kazunari Tomizawa ,  Kohzoh Nakamura ,  Shun Ueki ,  Tomohiko Mori ,  Yuichi Yoshida

发明人： Kazunari Tomizawa ,  Kohzoh Nakamura ,  Shun Ueki ,  Tomohiko Mori ,  Yuichi Yoshida

IPC分类号： H04N9/30 ,  H04N7/01

CPC分类号： G09G5/02 ,  G02F1/133707 ,  G02F2001/134372 ,  G02F2201/52 ,  G09G3/006 ,  G09G3/2003 ,  G09G3/3607 ,  G09G3/3611 ,  G09G2300/0426 ,  G09G2300/0443 ,  G09G2300/0452 ,  G09G2300/0486 ,  G09G2320/0242 ,  G09G2320/028 ,  G09G2340/06

摘要： There is provided a signal conversion circuit which is suitably used in a multiprimary liquid crystal display device (especially a multiprimary liquid crystal display device which performs display in a vertical alignment mode), and a multiprimary liquid crystal display device having such a signal conversion circuit.A signal conversion circuit according to the present invention is for use in a multiprimary liquid crystal display device which performs display in a vertical alignment mode, 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 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： 提供了适用于多原色液晶显示装置（特别是以垂直取向模式进行显示的多原色液晶显示装置）的信号转换电路以及具有这种信号转换电路的多原色液晶显示装置。 根据本发明的信号转换电路用于以垂直对准模式执行显示的多原色液晶显示装置，并将输入视频信号转换为与四种或更多原色对应的多原色信号。 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，CIE1976色度坐标 （u60'，v60'）表示当从60°倾斜方向观看像素时的色度。

公开(公告)号：US20090322779A1

公开(公告)日：2009-12-31

申请号：US12375741

申请日：2007-07-30

申请人： Kazunari Tomizawa ,  Shun Ueki

发明人： Kazunari Tomizawa ,  Shun Ueki

IPC分类号： G09G5/02

CPC分类号： G09G5/02 ,  H04N9/67

摘要： A display device is designed to conduct a display operation using a number n of primary colors (where n is a natural number that is equal to or greater than four). The display device includes a video signal converting section that receives an m-primary-color signal representing a number m of primary colors (where is m is also a natural number that is smaller than n) and that converts the m-primary-color signal into an n-primary-color signal representing the n primary colors. The n primary colors include a color that is complementary to a particular one of the m primary colors. The video signal converting section generates the n-primary-color signal such that if a color component representing the particular primary color of the m-primary-color signal has a negative level, the complementary primary color has an increased luminance and the other non-complementary primary colors have decreased luminances compared to a situation where the color component representing the particular primary color is zero.

摘要翻译： 显示装置被设计为使用数量为n的原色（其中n是等于或大于4的自然数）进行显示操作。 显示装置包括视频信号转换部，其接收表示原色数m的m原色信号（其中m也是小于n的自然数），并且将m原色信号 成为表示n原色的n原色信号。 n原色包括与m个原色中的特定的一个颜色互补的颜色。 视频信号转换部分产生n原色信号，使得如果表示m原色信号的特定原色的色彩分量具有负电平，则互补原色具有增加的亮度， 与表示特定原色的颜色分量为零的情况相比，互补原色具有降低的亮度。

公开(公告)号：US09230494B2

公开(公告)日：2016-01-05

申请号：US13635486

申请日：2011-03-16

申请人： Makoto Hasegawa ,  Kazunari Tomizawa

发明人： Makoto Hasegawa ,  Kazunari Tomizawa

IPC分类号： G09G3/36

CPC分类号： G09G3/3607 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0252 ,  G09G2320/0693 ,  G09G2340/06 ,  G09G2340/16

摘要： A multi-primary-color liquid crystal panel driver (100) according to the present invention includes: a multi-primary-color converter (110) which performs a multi-primary-color conversion to convert the grayscale levels of an input video signal in each of a plurality of vertical scanning periods into grayscale levels of four or more primary colors; and an overdrive circuit (120) which sets, based on the grayscale levels that have been subjected to the multi-primary-color conversion in one vertical scanning period and on the grayscale levels that have been subjected to the multi-primary-color conversion in another vertical scanning period that is earlier than the one vertical scanning period by at least one period, the grayscale levels of the four or more primary colors in that one vertical scanning period. The present invention provides a multi-primary-color liquid crystal panel that can improve the display quality even when the input video signal has varying grayscale levels.

摘要翻译： 根据本发明的多原色液晶面板驱动器（100）包括：多原色转换器（110），其执行多原色转换以将输入视频信号的灰阶级转换为 将多个垂直扫描周期中的每一个分成四个或更多原色的灰度级; 以及过驱动电路（120），其基于在一个垂直扫描周期中经受多原色转换的灰度级别和经过多原色转换的灰阶级别 在一个垂直扫描周期的早于一个垂直扫描周期的另一个垂直扫描周期，该一个垂直扫描周期中的四个或更多原色的灰度级。 本发明提供一种多原色液晶面板，即使当输入视频信号具有不同的灰度级时，也可以提高显示质量。

公开(公告)号：US20130100179A1

公开(公告)日：2013-04-25

申请号：US13807380

申请日：2011-06-30

申请人： Kazunari Tomizawa ,  Kohzoh Nakamura

发明人： Kazunari Tomizawa ,  Kohzoh Nakamura

IPC分类号： G09G3/20

CPC分类号： G09G3/2003 ,  G09G3/3611 ,  G09G2300/0452 ,  G09G2320/0666 ,  G09G2340/06 ,  H04N9/68

摘要： A multi-primary-color liquid crystal display device (100) according to the present invention includes a liquid crystal display panel (10) with a pixel made up of red, green, blue and yellow subpixels (R, G, B, Ye) and a signal conversion circuit (20) which converts an input three-primary-color video signal into a four-color video signal. If the three-primary-color video signal supplied to the signal conversion circuit is indicated as (r, g, b) using the grayscale levels r, g and b (each of which is an integer of 0 through 255) of the three primary colors of red, green and blue and if the luminance of the color white displayed by the pixel in response to a three-primary-color video signal indicated as (255, 255, 255) is supposed to be 100%, the signal conversion circuit adjusts the level of the four-color video signal so that when a three-primary-color video signal indicated as (186, 0, 0) is input, the luminance of the color red displayed by the red subpixel becomes equal to or greater than 6.5%.

摘要翻译： 根据本发明的多原色液晶显示装置（100）包括具有由红色，绿色，蓝色和黄色子像素（R，G，B，Ye）构成的像素的液晶显示面板（10） 以及将输入的三原色视频信号转换为四色视频信号的信号转换电路（20）。 如果使用三个主要的灰度等级r，g和b（每个都是0到255的整数）将提供给信号转换电路的三原色视频信号表示为（r，g，b） 红色，绿色和蓝色的颜色，并且如果响应于表示为（255,255,255）的三原色视频信号而由像素显示的白色的亮度为100％，则信号转换电路 调整四色视频信号的电平，使得当输入表示为（186,0,0）的三原色视频信号时，由红色子像素显示的红色的亮度变为等于或大于 6.5％。

公开(公告)号：US08427411B2

公开(公告)日：2013-04-23

申请号：US13454656

申请日：2012-04-24

申请人： Kazunari Tomizawa ,  Kozo Nakamura

发明人： Kazunari Tomizawa ,  Kozo Nakamura

IPC分类号： G09G3/36

CPC分类号： G09G5/10 ,  G09G5/02 ,  G09G5/026 ,  G09G2300/0443 ,  G09G2320/0242 ,  G09G2320/0666 ,  G09G2340/06 ,  H04N9/67

摘要： A color conversion circuit converts a three-primary-color signal PS0 to a 5-color signal PS5, and includes (i) a color component extraction module that generates, by performing isochromatic conversion, a 7-color signal PS2 made up of 7 color components equivalent in terms of color to color components d1 through d5 of the 5-color signal PS5, and (ii) a matrix operation module that generates color components of the 5-color signal by performing linear combination of the color components of the 7-color signal. With this, it is possible to realize a color conversion circuit by which colors represented by a signal after conversion can be adjusted using intuitively-understandable parameters.

摘要翻译： 颜色转换电路将三原色信号PS0转换为5色信号PS5，并且包括（i）颜色分量提取模块，其通过执行等色变换来生成由7色组成的7色信号PS2 在5色信号PS5的颜色与颜色成分d1〜d5相当的成分的成分，以及（ii）通过进行7-色信号PS5的颜色成分的线性组合来生成5色信号的色彩成分的矩阵运算模块， 彩色信号。 由此，可以实现一种颜色转换电路，通过该颜色转换电路可以使用直观可理解的参数来调整由转换后的信号表示的颜色。

公开(公告)号：US08373818B2

公开(公告)日：2013-02-12

申请号：US13511195

申请日：2010-11-22

申请人： Kazunari Tomizawa ,  Yuichi Yoshida ,  Akiko Sato

发明人： Kazunari Tomizawa ,  Yuichi Yoshida ,  Akiko Sato

IPC分类号： G02F1/1335

CPC分类号： G09G3/2003 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0271 ,  G09G2320/0666 ,  G09G2340/06

摘要： A multiple primary color display device according to the present invention includes a pixel defined by a plurality of sub pixels. The plurality of sub pixels include a first sub pixel to display a first color having a first hue, a second sub pixel to display a second color having a second hue, a third sub pixel to display a third color having a third hue, and a fourth sub pixel to display a fourth color having a fourth hue. When a color represented by the input signal is changed from black to white via a color of a prescribed hue, luminance levels of the plurality of sub pixels are set such that the luminance level of each of the first sub pixel, the second sub pixel and the third sub pixel is started to be increased without increasing the luminance level of the fourth sub pixel and such that the luminance level of the third sub pixel is increased at a lower rate than that of the luminance level of each of the first sub pixel and the second sub pixel.

摘要翻译： 根据本发明的多原色显示装置包括由多个子像素限定的像素。 多个子像素包括第一子像素以显示具有第一色调的第一颜色，第二子像素显示具有第二色调的第二颜色，第三子像素显示具有第三色调的第三颜色， 第四子像素以显示具有第四色调的第四颜色。 当由输入信号表示的颜色通过规定色调的颜色从黑色变为白色时，多个子像素的亮度级被设置为使得第一子像素，第二子像素和 开始增加第三子像素而不增加第四子像素的亮度水平，并且使得第三子像素的亮度级别以比第一子像素和第一子像素中的每一个的亮度级低的速率增加 第二个子像素。

公开(公告)号：US20120229529A1

公开(公告)日：2012-09-13

申请号：US13511195

申请日：2010-11-22

申请人： Kazunari Tomizawa ,  Yuichi Yoshida ,  Akiko Sato

发明人： Kazunari Tomizawa ,  Yuichi Yoshida ,  Akiko Sato

IPC分类号： G09G5/10

CPC分类号： G09G3/2003 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0271 ,  G09G2320/0666 ,  G09G2340/06

摘要： A multiple primary color display device according to the present invention includes a pixel defined by a plurality of sub pixels. The plurality of sub pixels include a first sub pixel to display a first color having a first hue, a second sub pixel to display a second color having a second hue, a third sub pixel to display a third color having a third hue, and a fourth sub pixel to display a fourth color having a fourth hue. When a color represented by the input signal is changed from black to white via a color of a prescribed hue, luminance levels of the plurality of sub pixels are set such that the luminance level of each of the first sub pixel, the second sub pixel and the third sub pixel is started to be increased without increasing the luminance level of the fourth sub pixel and such that the luminance level of the third sub pixel is increased at a lower rate than that of the luminance level of each of the first sub pixel and the second sub pixel.

摘要翻译： 根据本发明的多原色显示装置包括由多个子像素限定的像素。 多个子像素包括第一子像素以显示具有第一色调的第一颜色，第二子像素显示具有第二色调的第二颜色，第三子像素显示具有第三色调的第三颜色， 第四子像素以显示具有第四色调的第四颜色。 当由输入信号表示的颜色通过规定色调的颜色从黑色变为白色时，多个子像素的亮度级被设置为使得第一子像素，第二子像素和 开始增加第三子像素而不增加第四子像素的亮度水平，并且使得第三子像素的亮度级别以比第一子像素和第一子像素中的每一个的亮度级低的速率增加 第二个子像素。