公开(公告)号：US09679535B2

公开(公告)日：2017-06-13

申请号：US14684654

申请日：2015-04-13

Applicant: Japan Display Inc.

Inventor： Akira Sakaigawa ,  Toshiyuki Nagatsuma ,  Amane Higashi ,  Masaaki Kabe

IPC: G09G5/02 ,  G09G5/10 ,  G09G3/34 ,  G06T5/00 ,  G06T11/00 ,  H04N1/60 ,  H04N5/202 ,  H04N5/58 ,  H04N9/64 ,  H04N9/73

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.

公开(公告)号：US09501983B2

公开(公告)日：2016-11-22

申请号：US14172469

申请日：2014-02-04

Applicant: Japan Display Inc.

Inventor： Hirokazu Tatsuno ,  Toshiyuki Nagatsuma ,  Akira Sakaigawa ,  Masaaki Kabe

IPC: G09G3/36 ,  G09G5/02

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。

公开(公告)号：US09349173B2

公开(公告)日：2016-05-24

申请号：US14755725

申请日：2015-06-30

Applicant: Japan Display Inc.

Inventor： Soichiro Kurokawa ,  Toshiyuki Nagatsuma ,  Tsutomu Harada

IPC: G06K9/40 ,  G06T5/40 ,  H04N5/20 ,  H04N5/202

CPC classification number: G06T5/40 ,  H04N5/20 ,  H04N5/202

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.

公开(公告)号：US20160063928A1

公开(公告)日：2016-03-03

申请号：US14804479

申请日：2015-07-21

Applicant: Japan Display Inc.

Inventor： Akira Sakaigawa ,  Toshiyuki Nagatsuma

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2320/02 ,  G09G2320/062 ,  G09G2320/0653

Abstract: A lighting device includes a light source and a control section. The control section has a first mode and a second mode as luminance setting modes of the light source and sets, in order to exercise variable control of a reach time taken to change luminance of the light source to a determined value, the reach time on the basis of the first mode for a determined period at the time of switching from the first mode to the second mode.

Abstract translation: 照明装置包括光源和控制部。 控制部分具有第一模式和第二模式作为光源和设置的亮度设置模式，以便对将光源的亮度改变到确定值的时间进行可变控制，达到时间 在从第一模式切换到第二模式时确定时段的第一模式的基础。

公开(公告)号：US09214118B2

公开(公告)日：2015-12-15

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

IPC: G09G3/36 ,  G09G5/10

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。

公开(公告)号：US20150348477A1

公开(公告)日：2015-12-03

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.

Abstract translation: 根据一个方面，一种显示装置包括：图像显示面板，其中像素被布置成二维矩阵，每个像素包括显示第一颜色的第一子像素，显示第二颜色的第二子像素 ，显示第三颜色的第三子像素和显示第四颜色的第四子像素; 以及信号处理单元，其将输入信号的输入值转换为扩展颜色空间中的扩展值，以产生输出信号，并将所生成的输出信号输出到图像显示面板。 信号处理单元至少基于输入信号的饱和度改变第一至第四子像素的输出信号。

公开(公告)号：US20150310830A1

公开(公告)日：2015-10-29

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 Sakaigama

IPC: G09G5/10 ,  G09G3/36 ,  G09G5/02 ,  G09G5/18

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.

Abstract translation: 显示装置包括信号处理单元，其接收输入信号，并计算到第一子像素，第二子像素，第三子像素和第四子像素的输出信号。 信号处理单元使用面光源的光量来计算属于多个分区中的每一个的像素的频率。 所述信号处理单元通过以下方式来计算每个所述分区的索引值：至少乘以通过从所述分区之中具有最大光量的分区依次添加所述像素的频率而获得的累积频率， 从具有最大光量的分区计数累积频率所属的分区。 信号处理单元基于指标值超过阈值的分区来控制表面光源的亮度。

公开(公告)号：US20150310828A1

公开(公告)日：2015-10-29

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

IPC: G09G5/10 ,  G09G5/18

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.

Abstract translation: 提供一种显示装置和照明装置，包括：光源; 时分控制单元，对由第一位数的第一亮度控制信号表示的值进行时分运算，用于控制光源的亮度，以产生第二亮度控制信号，每个第二亮度控制信号的第二位数小于 产生第一亮度控制信号，每个具有对应于由第二亮度控制信号表示的值之一的脉冲宽度的第三亮度控制信号; 以及驱动单元，其产生用于使光源基于第三亮度控制信号发光的驱动信号，并将驱动信号提供给光源。

公开(公告)号：US20140285539A1

公开(公告)日：2014-09-25

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

IPC: G09G3/34 ,  G06F1/32 ,  G09G3/36

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。

公开(公告)号：US20140267471A1

公开(公告)日：2014-09-18

申请号：US14184819

申请日：2014-02-20

Applicant: Japan Display Inc.

Inventor： Tsutomu Harada ,  Masaaki Kabe ,  Fumitaka Goto ,  Toshiyuki Nagatsuma

IPC: G09G5/04

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。