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公开(公告)号：US20150294441A1
公开(公告)日：2015-10-15
申请号：US14684654
申请日：2015-04-13
Applicant: Japan Display Inc.
Inventor： Akira Sakaigawa , Toshiyuki Nagatsuma , Amane Higashi , Masaaki Kabe
CPC classification number: G09G5/10 , G09G3/3413 , G09G2300/0452 , G09G2320/0276 , G09G2320/064 , G09G2320/0646 , G09G2340/0428 , G09G2340/0457 , G09G2340/06
Abstract: A display device includes a conversion section which generate a data conversion signal including a first number of bits from an input signal, an error dispersion section which generates a display control signal including a second number of bits that is smaller than the first number of bits from the data conversion signal and which spatially disperses errors that occur at the time of generating the display control signal, and a display panel section which displays an image on the basis of the display control signal.
Abstract translation: 显示装置包括转换部分，其从输入信号产生包括第一位数的数据转换信号;误差色散部分，其生成包括比第一位数小的第二位数的显示控制信号， 数据转换信号，并且在空间上分散在生成显示控制信号时发生的误差;以及显示面板部分，其基于显示控制信号显示图像。
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公开(公告)号：US20150109350A1
公开(公告)日：2015-04-23
申请号：US14505145
申请日：2014-10-02
Applicant: Japan Display Inc.
Inventor： Fumitaka Gotoh , Tsutomu Harada , Masaaki Kabe , Tae Kurokawa , Kojiro Ikeda , Toshiyuki Nagatsuma , Akira Sakaigawa , Naoyuki Takasaki , Amane Higashi
CPC classification number: G09G3/3607 , G09G5/10 , G09G2300/0452
Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.
Abstract translation: 显示装置包括：图像显示单元，其包括图像显示区域中的多个主要像素，所述图像显示单元包括子像素; 照射图像显示区域的光源; 光源控制单元，其控制所述光源的亮度; 以及颜色信息校正处理单元，当将红色像素，绿色像素以及绿色像素中的至少一种的颜色信息作为颜色信息时，将基于光源的亮度和输入视频信号的亮度获得的第一颜色信息校正为第二颜色信息 包括在第一颜色信息中的蓝色像素超过预定阈值，通过对红色像素，绿色像素和蓝色像素的颜色信息进行退化来校正第二信息，并且通过将包括在第一颜色信息中的第一颜色信息中的白色像素的颜色信息相加 基于退化颜色信息的颜色信息。
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公开(公告)号：US09972255B2
公开(公告)日：2018-05-15
申请号：US14724334
申请日：2015-05-28
Applicant: Japan Display Inc.
Inventor： Masaaki Kabe , Toshiyuki Nagatsuma , Amane Higashi , Yoko Fukunaga
IPC: G09G3/36
CPC classification number: G09G3/3607 , G09G2300/0452 , G09G2320/0626
Abstract: According to an aspect, a display device includes: an image display panel in which pixels are arranged in a two-dimensional matrix, each of the pixels including a first sub-pixel displaying a first color, a second sub-pixel displaying a second color, a third sub-pixel displaying a third color, and a fourth sub-pixel displaying a fourth color; and a signal processing unit that converts input values of input signals into extended values in an extended color space to generate output signals, and outputs the generated output signals to the image display panel. The signal processing unit changes the output signals for the first to fourth sub-pixels based on at least saturation of the input signals.
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公开(公告)号：US09728161B2
公开(公告)日：2017-08-08
申请号：US14692957
申请日：2015-04-22
Applicant: Japan Display Inc.
Inventor： Kojiro Ikeda , Toshiyuki Nagatsuma , Masaaki Kabe , Amane Higashi , Tae Kurokawa , Fumitaka Gotoh , Akira Sakaigawa
CPC classification number: G09G5/10 , G09G3/3607 , G09G3/3648 , G09G5/02 , G09G2300/0452 , G09G2340/0457 , G09G2340/06 , G09G2360/16
Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.
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公开(公告)号：US09552758B2
公开(公告)日：2017-01-24
申请号：US14708406
申请日：2015-05-11
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Hiroki Uchiyama , Toshiyuki Nagatsuma
CPC classification number: G09G3/2003 , G06T1/20 , G09G3/2092 , G09G3/3413 , G09G3/36 , G09G5/06 , G09G2300/0452 , G09G2320/0626 , G09G2330/021 , G09G2330/022 , G09G2340/06 , G09G2360/144 , H04N1/46 , H04N1/60
Abstract: A display device includes an image processing unit that performs image processing on image data input from the outside, and performs display output corresponding to the image data on which image processing is performed by the image processing unit. The image processing unit includes a first processing circuit that simply replaces colors of an image to limit the number of colors used for the image to a predetermined number equal to or smaller than 16, a second processing circuit that performs image processing including arithmetic processing for improving luminance of a plurality of pixels constituting the image displayed on the display device corresponding to the image data; and a switching unit that causes the second processing circuit to perform image processing, and causes the first processing circuit to perform image processing when performing the image processing while saving more power than the second processing circuit.
Abstract translation: 显示装置包括对从外部输入的图像数据执行图像处理的图像处理单元，并且执行与由图像处理单元执行图像处理的图像数据相对应的显示输出。 图像处理单元包括简单地替换图像的颜色以将用于图像的颜色的数量限制为等于或小于16的预定数量的第一处理电路，执行包括用于改善的算术处理的图像处理的第二处理电路 构成对应于图像数据的在显示装置上显示的图像的多个像素的亮度; 以及切换单元，其使得所述第二处理电路执行图像处理，并且使得所述第一处理电路在执行所述图像处理时执行图像处理，同时比所述第二处理电路节省更多的电力。
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Patent Agency Ranking
16.发明授权Display device, electronic apparatus, driving method of display device, and signal processing method 有权显示装置，电子装置，显示装置的驱动方法以及信号处理方法公开(公告)号：US09390679B2
公开(公告)日：2016-07-12
申请号：US14184819
申请日：2014-02-20
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Masaaki Kabe , Fumitaka Goto , Toshiyuki Nagatsuma
CPC classification number: G09G5/04 , G09G3/342 , G09G2320/0242 , G09G2320/062 , G09G2320/0646 , G09G2320/0666
Abstract: According to an aspect, a display device includes: an image display panel; a signal processing unit; and a signal processing circuit. The signal processing unit calculates an extension coefficient α for an input signal, calculates an output signal of a first sub-pixel, calculates an output signal of a second sub-pixel, calculates an output signal of a third sub-pixel, calculates an output signal of a fourth sub-pixel, and calculates a control signal. The signal processing circuit performs filtering processing on the control signal by a set first time constant to calculate and output a light-source device control signal, when the control signal is smaller than a set threshold value, and performs filtering processing on the control signal by a set second time constant to calculate and output the light-source device control signal, when the control signal is equal to or larger than the threshold value.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 信号处理单元; 和信号处理电路。 信号处理单元计算输入信号的扩展系数α，计算第一子像素的输出信号，计算第二子像素的输出信号，计算第三子像素的输出信号，计算输出 信号，并计算控制信号。 当控制信号小于设定的阈值时，信号处理电路对设定的第一时间常数对控制信号进行滤波处理，以计算和输出光源装置控制信号，并且通过 当控制信号等于或大于阈值时，设定第二时间常数来计算和输出光源装置控制信号。
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公开(公告)号：US09262970B2
公开(公告)日：2016-02-16
申请号：US14223306
申请日：2014-03-24
Applicant: Japan Display Inc.
Inventor： Tae Kurokawa , Akira Sakaigawa , Masaaki Kabe , Masashi Mitsui , Kojiro Ikeda , Fumitaka Goto , Amane Higashi , Hirokazu Tatsuno , Toshiyuki Nagatsuma , Hiroki Uchiyama
CPC classification number: G09G3/3406 , G06F1/32 , G06F1/3265 , G09G3/3607 , G09G3/3648 , G09G2320/0242 , G09G2320/0646 , G09G2340/06 , Y02D10/153
Abstract: According to an aspect, a display device includes: an image display panel; a color conversion device including a signal processing unit and a signal output unit; a planar light-source device; and a light-source-device control unit. The signal processing unit includes a color conversion circuit that converts an input signal in a reference color area into a converted input signal generated in a definition color area where a chromaticity point of at least one of a first color, a second color, and a third color is inside of a reference color area, and a four-color generation circuit that generates an output signal and a light-source-device control signal from the converted input signal. The signal output unit outputs the drive signal to each sub-pixel based on the output signal. The light-source-device control unit outputs a drive voltage for emitting white light on the planar light-source device based on the light-source-device control signal.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 颜色转换装置，包括信号处理单元和信号输出单元; 平面光源装置; 以及光源装置控制部。 信号处理单元包括将参考色区域中的输入信号转换为定义色区域中生成的转换输入信号的颜色转换电路，其中第一颜色，第二颜色和第三色彩中的至少一个的色度点 颜色在参考颜色区域内，以及四色生成电路，其从转换的输入信号生成输出信号和光源装置控制信号。 信号输出单元基于输出信号将驱动信号输出到每个子像素。 光源装置控制部基于光源装置控制信号，在平面光源装置上输出用于发出白光的驱动电压。
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公开(公告)号：US09024982B2
公开(公告)日：2015-05-05
申请号：US14455203
申请日：2014-08-08
Applicant: Japan Display Inc.
Inventor： Amane Higashi , Toshiyuki Nagatsuma , Akira Sakaigawa , Masaaki Kabe
CPC classification number: G09G3/3413 , G09G3/3426 , G09G3/3648 , G09G2300/0452 , G09G2320/0646 , G09G2340/06 , G09G2360/145
Abstract: An image display device includes an image display panel configured of pixels made up of first, second, third, and fourth sub-pixels being arrayed in a two-dimensional matrix shape, and a signal processing unit into which an input signal is input and from which an output signal based on an extension coefficient is output, and causes the signal processing unit to obtain a maximum value of luminosity with saturation S in the HSV color space enlarged by adding a fourth color, as a variable, and to obtain a reference extension coefficient based on the maximum value, and further to determine an extension coefficient at each pixel from the reference extension coefficient, an input signal correction coefficient based on the sub-pixel input signal values at each pixel, and an external light intensity correction coefficient based on external light intensity.
Abstract translation: 图像显示装置包括由以二维矩阵形状排列的第一，第二，第三和第四子像素构成的像素构成的图像显示面板和输入输入信号的信号处理单元 输出基于扩展系数的输出信号，并且使信号处理单元通过将第四颜色作为变量来扩大HSV颜色空间中的饱和度S的最大亮度值，并获得参考扩展 基于最大值的系数，并且还根据参考扩展系数确定每个像素处的扩展系数，基于每个像素处的子像素输入信号值的输入信号校正系数和基于 外部光强度。
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公开(公告)号：US09972253B2
公开(公告)日：2018-05-15
申请号：US14682520
申请日：2015-04-09
Applicant: Japan Display Inc.
Inventor： Fumitaka Gotoh , Tsutomu Harada , Toshiyuki Nagatsuma , Akira Sakaigawa , Masaaki Kabe , Tae Kurokawa , Kojiro Ikeda
CPC classification number: G09G3/3406 , G09G2320/064 , G09G2320/0646
Abstract: Provided are a display apparatus and an illumination apparatus including: a light source; a time division control unit that performs a time division operation on a value represented by a first luminance control signal of a first bit number for controlling luminance of the light source to generate second luminance control signals each having a second bit number that is smaller than the first bit number and generates third luminance control signals each having a pulse width that corresponds to one of the values represented by the second luminance control signals; and a drive unit that generates drive signals for causing the light source to emit light on the basis of the third luminance control signals and supplies the drive signals to the light source.
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公开(公告)号：US20170330530A1
公开(公告)日：2017-11-16
申请号：US15648177
申请日：2017-07-12
Applicant: Japan Display Inc.
Inventor： Kojiro Ikeda , Toshiyuki Nagatsuma , Masaaki Kabe , Amane Higashi , Tae Kurokawa , Fumitaka Gotoh , Akira Sakaigawa
CPC classification number: G09G5/10 , G09G3/3607 , G09G3/3648 , G09G5/02 , G09G2300/0452 , G09G2340/0457 , G09G2340/06 , G09G2360/16
Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.
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