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：US08780029B2

公开(公告)日：2014-07-15

申请号：US13119978

申请日：2009-09-18

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

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

IPC分类号： G09G3/36 ,  G06F3/038 ,  G09G5/00 ,  G09G5/10 ,  G09G5/02

CPC分类号： G09G3/3655 ,  G02F2201/52 ,  G09G2300/0426 ,  G09G2300/0443 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/028 ,  G09G2340/06

摘要： A multiprimary liquid crystal display device in which deteriorations in display quality caused by the coloration of a gray representation when viewed from an oblique direction are suppressed, and a signal conversion circuit for use in such a multiprimary liquid crystal display device are provided.A signal conversion circuit according to the present invention is for use in a multiprimary liquid crystal display device, the multiprimary liquid crystal display device having a pixel defined by a plurality of subpixels including a red subpixel, a green subpixel, a blue subpixel, and a yellow subpixel, and performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, the signal conversion circuit converting an input video signal to a multiprimary signal corresponding to four or more primary colors. When a video signal for the pixel to display a gray color having a normalized luminance of no less than 0.2 and no more than 0.3 is input, the signal conversion circuit according to the present invention performs a conversion of the video signal so that, among the normalized luminances of the plurality of subpixels, the yellow subpixel has the lowest normalized luminance.

摘要翻译： 抑制了从倾斜方向观察时由灰色表示着色引起的显示质量恶化的多原色液晶显示装置，并且提供了用于这种多原色液晶显示装置的信号转换电路。 根据本发明的信号转换电路用于多原色液晶显示装置中，所述多原色液晶显示装置具有由包括红色子像素，绿色子像素，蓝色子像素和多个子像素的多个子像素所限定的像素 黄色子像素，并且通过使用由多个子像素显示的四个或更多个原色进行多色显示，信号转换电路将输入视频信号转换为对应于四个或更多原色的多原色信号。 当输入用于显示具有不小于0.2且不大于0.3的归一化亮度的灰度的像素的视频信号时，根据本发明的信号转换电路执行视频信号的转换，使得在 多个子像素的归一化亮度，黄色子像素具有最低归一化亮度。

公开(公告)号：US08675031B2

公开(公告)日：2014-03-18

申请号：US13503421

申请日：2010-10-26

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

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

IPC分类号： G09G5/02

CPC分类号： G02B5/201

摘要： A liquid crystal display device according to the present invention comprises a pixel including a plurality of sub pixels. The plurality of sub pixels include a red sub pixel (R), a green sub pixel (G), a blue sub pixel (B), a yellow sub pixel (Ye) and a cyan sub pixel (C). The aperture area size of one of the cyan sub pixel (C) and the blue sub pixel (B) is larger than the aperture area size of any of the other of the cyan (C) and blue (B) sub pixels, the green sub pixel (G) and the yellow sub pixel (Ye); and the aperture area size of the red sub pixel (R) is larger than the aperture area size of any of the other of the cyan (C) and blue (B) sub pixels, the green sub pixel (G), and the yellow sub pixel (Ye).

摘要翻译： 根据本发明的液晶显示装置包括具有多个子像素的像素。 多个子像素包括红色子像素（R），绿色子像素（G），蓝色子像素（B），黄色子像素（Ye）和青色子像素（C）。 青色子像素（C）和蓝色子像素（B）中的一个的开口面积尺寸大于青色（C）和蓝色（B）子像素中的任一个的开口面积尺寸，绿色 子像素（G）和黄色子像素（Ye）; 并且红色子像素（R）的开口面积尺寸大于青色（C）和蓝色（B）子像素，绿色子像素（G）和黄色子像素（G）中的任一个的开口面积尺寸 子像素（Ye）。

公开(公告)号：US20130271356A1

公开(公告)日：2013-10-17

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： G09G3/20

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：US08436875B2

公开(公告)日：2013-05-07

申请号：US13128884

申请日：2009-11-05

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

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

IPC分类号： G09G5/10

CPC分类号： H04N9/64 ,  G02F1/133514 ,  G02F2201/52 ,  G09G3/3607 ,  G09G5/06 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06

摘要： A multiple primary color display device which suppresses the reduction in the display quality when an input signal corresponding to green in an sRGB color space is input from outside is provided. A display device according to the present invention has a pixel defined by a plurality of sub pixels. The plurality of sub pixels include at least a red sub pixel for displaying red, a green sub pixel for displaying green, a blue sub pixel for displaying blue, and a yellow sub pixel for displaying yellow. When an input signal corresponding to green in the sRGB color space is input from outside, the display device according to the present invention provides display using the yellow sub pixel in addition to the green sub pixel.

摘要翻译： 提供了从外部输入与sRGB颜色空间中的绿色对应的输入信号时抑制显示质量降低的多原色显示装置。 根据本发明的显示装置具有由多个子像素限定的像素。 多个子像素至少包括用于显示红色的红色子像素，用于显示绿色的绿色子像素，用于显示蓝色的蓝色子像素和用于显示黄色的黄色子像素。 当从外部输入对应于sRGB色彩空间中的绿色的输入信号时，根据本发明的显示装置除了绿色子像素之外还提供使用黄色子像素的显示。

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。

公开(公告)号：US08243212B2

公开(公告)日：2012-08-14

申请号：US11793696

申请日：2006-02-15

申请人： Kazunari Tomizawa ,  Takeshi Kumakura

发明人： Kazunari Tomizawa ,  Takeshi Kumakura

IPC分类号： H04N3/14 ,  H04N5/70 ,  G06F3/038 ,  G09G5/10

CPC分类号： G09G3/00 ,  G09G3/2022 ,  G09G3/2025 ,  G09G3/2037 ,  G09G3/2074 ,  G09G3/3426

摘要： When dividing one frame into a plurality of sub-frames to carry out image display, in a gradation range which is able to be displayed using only sub-frames other than the last sub-frame (for example, luminance ½ or less in the case of two-part division, and luminance ¾ or less in the case of four-part division), the luminance of the last sub-frame is set as the minimum luminance, and luminance display is carried out using the other sub-frames.

摘要翻译： 当将一帧分割为多个子帧以执行图像显示时，在仅能够使用除了最后一个子帧之外的子帧进行显示的灰度范围（例如，在这种情况下的亮度为1/2以下 的两部分划分，并且在四部分划分的情况下的亮度¾以下），将最后一个子帧的亮度设置为最小亮度，并且使用其他子帧执行亮度显示。