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公开(公告)号：US10957261B2
公开(公告)日：2021-03-23
申请号：US16248232
申请日：2019-01-15
Applicant: Japan Display Inc.
Inventor： Kazuhiko Sako , Tsutomu Harada , Naoyuki Takasaki , Toshiyuki Nagatsuma
Abstract: According to an aspect, a display device includes a display unit including a plurality of pixels, a light source device that emits light that illuminates the display unit, and a controller that controls operation of the light source device. The controller does not lower luminance of the light for a second predetermined time or longer after the controller has raised the luminance of the light by a predetermined amount of luminance change or more within a first predetermined time.
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公开(公告)号：US09773470B2
公开(公告)日：2017-09-26
申请号：US14685791
申请日：2015-04-14
Applicant: Japan Display Inc.
Inventor： Tae Kurokawa , Akira Sakaigawa , Masaaki Kabe , Kojiro Ikeda , Fumitaka Gotoh , Amane Higashi , Toshiyuki Nagatsuma
CPC classification number: G09G5/02 , G09G3/3611 , G09G2340/0457 , G09G2340/06
Abstract: A display device includes: an image display panel including a plurality of pixels each including first to fourth sub-pixels; and a signal processing unit. The signal processing unit determines an expansion coefficient related to the image display panel, obtains output signals of the first to the third sub-pixels based on at least input signals of the first to the third sub-pixels and the expansion coefficient to be output to the first to the third sub-pixels respectively, obtains a fourth sub-pixel correction value as a correction value of an output signal of the fourth sub-pixel based on the input signals of the first to the third sub-pixels and the expansion coefficient, and obtains the output signal of the fourth sub-pixel based on the input signals of the first to third sub-pixels, the expansion coefficient, and the fourth sub-pixel correction value to be output to the fourth sub-pixel.
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公开(公告)号：US20150339965A1
公开(公告)日：2015-11-26
申请号：US14705420
申请日：2015-05-06
Applicant: JAPAN DISPLAY INC.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Toshiyuki Nagatsuma , Hirokazu Tatsuno
IPC: G09G3/20
CPC classification number: G09G3/2003 , G09G3/3406 , G09G3/36 , G09G2300/0452 , G09G2320/064 , G09G2320/0646 , G09G2320/0673 , G09G2360/16
Abstract: A display device includes a first processing circuit mounted on a substrate separate from a translucent substrate constituting a display panel, and a second processing circuit mounted on the translucent substrate. The first and the second processing circuits receive the same image data. The first processing circuit includes a determination unit that uses color values of a plurality of pixels constituting an image based on the image data to determine an expansion coefficient value serving as a value for improving luminance of the image, and outputs the expansion coefficient value to the second processing circuit. The second processing circuit includes an expansion processing unit that uses the expansion coefficient value to provide expansion processing for improving the luminance of the image for the image based on the image data.
Abstract translation: 显示装置包括安装在与构成显示面板的透光性基板分离的基板上的第一处理电路和安装在透光性基板上的第二处理电路。 第一和第二处理电路接收相同的图像数据。 第一处理电路包括：确定单元，其基于图像数据使用构成图像的多个像素的颜色值，以确定用作提高图像亮度的值的展开系数值，并将展开系数值输出到 第二处理电路。 第二处理电路包括扩展处理单元，该扩展处理单元使用扩展系数值来提供用于基于图像数据提高图像的图像的亮度的扩展处理。
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公开(公告)号：US20140218386A1
公开(公告)日：2014-08-07
申请号：US14172469
申请日：2014-02-04
Applicant: Japan Display Inc.
Inventor： Hirokazu Tatsuno , Toshiyuki Nagatsuma , Akira Sakaigawa , Masaaki Kabe
CPC classification number: G09G3/3607 , G09G3/3648 , G09G5/02 , G09G2300/0452 , G09G2320/0276 , G09G2320/0646 , G09G2340/06
Abstract: According to an aspect, a color conversion device includes a signal processing unit and a signal output unit. When a color specified in a predetermined color space by color data based on input signals is a color outside a defined color gamut defined in the color space, the signal processing unit generates in-defined-gamut data, and when the color specified in the color space by the color data based on the input signals is a color on a border of or inside the defined color gamut, the signal processing unit does not convert the color data based on the input signals into color data of a color different from that specified by the color data based on the input signals, and generates in-defined-gamut data identical to the color data based on the input signals, and. The signal processing unit generates output signals based on the in-defined-gamut data.
Abstract translation: 根据一个方面，一种颜色转换装置包括信号处理单元和信号输出单元。 当通过基于输入信号的颜色数据在预定色彩空间中指定的颜色是在颜色空间中定义的限定色域之外的颜色时，信号处理单元产生限定色域数据，并且当以颜色指定的颜色 基于输入信号的颜色数据的空间是限定色域的边界或内部的颜色的颜色，信号处理单元不将基于输入信号的颜色数据转换为颜色数据与颜色数据不同于 基于输入信号的颜色数据，并且基于输入信号生成与颜色数据相同的定义的色域数据。 信号处理单元基于定义的色域数据生成输出信号。
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公开(公告)号：US11749214B2
公开(公告)日：2023-09-05
申请号：US17208682
申请日：2021-03-22
Applicant: Japan Display Inc.
Inventor： Kazuhiko Sako , Tsutomu Harada , Naoyuki Takasaki , Toshiyuki Nagatsuma
CPC classification number: G09G3/3406 , G09G3/2003 , G09G3/2074 , G09G3/3426 , G09G3/3607 , G09G3/3648 , G09G2300/0452 , G09G2310/08 , G09G2320/0233 , G09G2320/0238 , G09G2320/0646 , G09G2320/0653 , G09G2360/16
Abstract: A display device is provided and includes display panel comprising plurality of pixels; and light source device configured to emit light that illuminates display panel, wherein display panel is configured to control operation of light source device, display panel does not lower luminance of light for second predetermined time or longer after display panel has raised luminance of light by predetermined amount of luminance change or more within first predetermined time, and when image changes from first image other than raster image and ramp image to second image that is either of raster image and ramp image, display panel lowers luminance of light within time shorter than second predetermined time even after luminance of light has been raised by predetermined amount of luminance change or more within first predetermined time.
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Patent Agency Ranking
公开(公告)号：US09633614B2
公开(公告)日：2017-04-25
申请号：US14972250
申请日：2015-12-17
Applicant: Japan Display Inc.
Inventor： Masaaki Kabe , Fumitaka Gotoh , Kazuhiko Sako , Toshiyuki Nagatsuma , Kojiro Ikeda , Tsutomu Harada
CPC classification number: G09G3/3607 , G09G3/2092 , G09G2300/0452 , G09G2340/00 , G09G2340/06
Abstract: According to an aspect, a display device includes an image display panel and a signal processing unit. The signal processing unit derives a generation signal for a fourth sub-pixel in each of pixels based on an input signal for a first sub-pixel, an input signal for a second sub-pixel, an input signal for a third sub-pixel, and an extension coefficient. The signal processing unit derives a correction value based on a hue of an input color corresponding to a color to be displayed based on the input signal for the first sub-pixel, the input signal for the second sub-pixel, and the input signal for the third sub-pixel. The signal processing unit derives the output signal for the fourth sub-pixel in each of the pixels based on the generation signal for the fourth sub-pixel and the correction value and outputs the output signal to the fourth sub-pixel.
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7.发明授权公开(公告)号：US09324283B2
公开(公告)日：2016-04-26
申请号：US14086476
申请日：2013-11-21
Applicant: Japan Display Inc.
Inventor： Masaaki Kabe , Toshiyuki Nagatsuma , Amane Higashi , Kojiro Ikeda , Tae Kurokawa , Masashi Mitsui , Hiroki Uchiyama , Hirokazu Tatsuno , Fumitaka Goto , Akira Sakaigawa
CPC classification number: G09G3/3607 , G09G3/2003 , G09G3/3648 , G09G2300/0452 , G09G2320/0242 , G09G2340/06 , G09G2360/16
Abstract: According to an aspect, a display device includes a first sub-pixel, a second sub-pixel, a third sub-pixel; and a fourth sub-pixel. A signal obtained based on at least an input signal for the first sub-pixel and an extension coefficient is supplied to the first sub-pixel. A signal obtained based on at least an input signal for the second sub-pixel and the extension coefficient is supplied to the second sub-pixel. A signal obtained based on at least an input signal for the third sub-pixel and the extension coefficient is supplied to the third sub-pixel. A signal obtained based on at least the input signal for the first sub-pixel, the input signal for the second sub-pixel, the input signal for the third sub-pixel, and the extension coefficient is supplied to the fourth sub-pixel. The extension coefficient varies based on at least a saturation of the input signals.
Abstract translation: 根据一个方面，显示装置包括第一子像素，第二子像素，第三子像素; 和第四子像素。 至少基于第一子像素的输入信号获得的信号和扩展系数被提供给第一子像素。 至少基于第二子像素的输入信号获得的信号和扩展系数被提供给第二子像素。 至少基于第三子像素的输入信号获得的信号和扩展系数被提供给第三子像素。 基于至少基于第一子像素的输入信号，第二子像素的输入信号，第三子像素的输入信号和扩展系数获得的信号被提供给第四子像素。 扩展系数至少基于输入信号的饱和度而变化。
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公开(公告)号：US09196204B2
公开(公告)日：2015-11-24
申请号：US13744120
申请日：2013-01-17
Applicant: Japan Display Inc.
Inventor： Amane Higashi , Toshiyuki Nagatsuma , Akira Sakaigawa , Masaaki Kabe
CPC classification number: G09G3/3611 , G09G3/3406 , G09G3/3607 , G09G5/02 , G09G2320/0233 , G09G2320/0276 , G09G2340/06
Abstract: An image processing apparatus includes an image display unit and a luminance control unit. The image display unit includes pixels arranged in a matrix, each of which is formed of a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, and performs image display. The luminance control unit adjusts a ratio between a generation amount of first luminance generated by the first sub-pixel, the second sub-pixel, and the third sub-pixel and a generation amount of second luminance generated by the fourth sub-pixel. Over all input tones, the luminance control unit makes the generation amount of the second luminance lower than the generation amount of the first luminance and generates the second luminance so that a function representing a luminance value of the second luminance is continuous.
Abstract translation: 图像处理装置包括图像显示单元和亮度控制单元。 图像显示单元包括以矩阵形式布置的像素，每个像素由第一子像素，第二子像素，第三子像素和第四子像素形成，并执行图像显示。 亮度控制单元调整由第一子像素，第二子像素和第三子像素产生的第一亮度的产生量与由第四子像素生成的第二亮度的产生量之间的比率。 在所有输入音调上，亮度控制单元使得第二亮度的生成量低于第一亮度的产生量，并产生第二亮度，使得表示第二亮度的亮度值的函数是连续的。
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公开(公告)号：US20150332642A1
公开(公告)日：2015-11-19
申请号：US14695072
申请日：2015-04-24
Applicant: Japan Display Inc.
Inventor： Masashi Mitsui , Toshiyuki Nagatsuma
IPC: G09G3/36
CPC classification number: G09G3/3607 , G09G3/2066 , G09G3/2081 , G09G3/3648 , G09G5/243 , G09G2300/0452 , G09G2320/04 , G09G2320/0666 , G09G2330/021 , G09G2340/06 , G09G2340/145
Abstract: A display device includes: a display unit including pixels arranged in a matrix therein, each of the pixels including a first sub-pixel that displays a first color component, a second sub-pixel that displays a second color component, a third sub-pixel that displays a third color component, and a fourth sub-pixel that displays a fourth color component; and a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first, second, third, and fourth sub-pixels. The signal processing unit generates converted input signals with changed saturation among the input signals. The signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.
Abstract translation: 显示装置包括：显示单元，包括以矩阵排列的像素，每个像素包括显示第一颜色分量的第一子像素，显示第二颜色分量的第二子像素，第三子像素 显示第三颜色分量，第四子像素显示第四颜色分量; 以及信号处理单元，其接收能够与第一子像素，第二子像素和第三子像素一起显示的输入信号，并且计算到第一，第二，第三和第四子像素的输出信号 -像素。 信号处理单元在输入信号中产生变化的饱和度的转换输入信号。 信号处理单元基于转换的输入信号和由第四子像素引起的亮度增加量，计算到第一子像素，第二子像素和第三子像素的输出信号。
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公开(公告)号：US20150302565A1
公开(公告)日：2015-10-22
申请号：US14755725
申请日：2015-06-30
Applicant: Japan Display Inc.
Inventor： Soichiro Kurokawa , Toshiyuki Nagatsuma , Tsutomu Harada
Abstract: Disclosed herein is an image processor including: a random number sequence generation section adapted to generate a random number sequence; a random number-superimposed luminance variable generation section adapted to generate a random number-superimposed luminance variable by superimposing the random number sequence on a luminance variable; and a random number-superimposed image signal generation section adapted to generate a random number-superimposed image signal by superimposing the random number-superimposed luminance variable on an image signal.
Abstract translation: 本文公开了一种图像处理器，包括：随机数序列生成部分，适于生成随机数序列; 随机数叠加亮度变量生成部，适于通过将随机数序列叠加在亮度变量上来生成随机数叠加亮度变量; 以及适于通过将随机数叠加亮度变量叠加在图像信号上来生成随机数叠加图像信号的随机数叠加图像信号生成部分。
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