公开(公告)号：US20210210028A1

公开(公告)日：2021-07-08

申请号：US17208682

申请日：2021-03-22

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Tsutomu HARADA ,  Naoyuki TAKASAKI ,  Toshiyuki NAGATSUMA

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

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.

公开(公告)号：US20190221168A1

公开(公告)日：2019-07-18

申请号：US16248232

申请日：2019-01-15

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Tsutomu HARADA ,  Naoyuki TAKASAKI ,  Toshiyuki NAGATSUMA

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3406 ,  G09G3/2003 ,  G09G3/2074 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0238 ,  G09G2360/16

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.

公开(公告)号：US20160196787A1

公开(公告)日：2016-07-07

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

IPC: G09G3/36

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.

Abstract translation: 根据一方面，显示装置包括图像显示面板和信号处理单元。 信号处理单元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，导出每个像素中的第四子像素的生成信号， 和扩展系数。 信号处理单元基于第一子像素的输入信号，第二子像素的输入信号和第二子像素的输入信号，基于与要显示的颜色相对应的输入颜色的色调， 第三子像素。 信号处理单元基于第四子像素的生成信号和校正值，导出每个像素中的第四子像素的输出信号，并将输出信号输出到第四子像素。

公开(公告)号：US20150339966A1

公开(公告)日：2015-11-26

申请号：US14708406

申请日：2015-05-11

Applicant: Japan Display Inc.

Inventor： Tsutomu HARADA ,  Hiroki UCHIYAMA ,  Toshiyuki NAGATSUMA

IPC: G09G3/20 ,  G06T1/20 ,  G09G3/36 ,  G09G3/34

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。

公开(公告)号：US20150332643A1

公开(公告)日：2015-11-19

申请号：US14710110

申请日：2015-05-12

Applicant: Japan Display Inc.

Inventor： Amane HIGASHI ,  Toshiyuki NAGATSUMA ,  Akira SAKAIGAWA ,  Masaaki KABE

IPC: G09G3/36

CPC classification number: G09G5/243 ,  G09G3/2066 ,  G09G3/2081 ,  G09G3/3607 ,  G09G3/3648 ,  G09G2300/0452 ,  G09G2320/04 ,  G09G2330/021 ,  G09G2340/06 ,  G09G2340/145

Abstract: According to an aspect, a display device includes an image display panel in which pixels each including first to fourth sub-pixels are arranged in a two-dimensional matrix; and a signal processing unit that converts an input signal into an output signal and outputs the generated output signal to the image display panel. The signal processing unit determines an expansion coefficient, obtains a generated signal of the fourth sub-pixel in each pixel based on input signals of the first to the third sub-pixels in the pixel itself and the expansion coefficient, obtains an output signal for the fourth sub-pixel in each pixel based on a generated signal of the fourth sub-pixel in the pixel itself and a generated signal of the fourth sub-pixel in an adjacent pixel to be output to the fourth sub-pixel.

Abstract translation: 根据本发明的一个方面，显示装置包括图像显示面板，其中包括第一至第四子像素的像素以二维矩阵排列; 以及信号处理单元，其将输入信号转换为输出信号，并将所生成的输出信号输出到图像显示面板。 信号处理单元基于像素本身中的第一至第三子像素的输入信号和扩展系数来确定扩展系数，获得每个像素中的第四子像素的生成信号，获得用于 基于像素本身中的第四子像素的生成信号和要输出到第四子像素的相邻像素中的第四子像素的生成信号，在每个像素中的第四子像素。

公开(公告)号：US20150294642A1

公开(公告)日：2015-10-15

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

IPC: G09G5/02 ,  G09G3/36

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.

Abstract translation: 显示装置包括：包括多个像素的图像显示面板，每个像素包括第一至第四子像素; 和信号处理单元。 信号处理单元确定与图像显示面板相关的展开系数，至少基于第一至第三子像素的输入信号和要输出的展开系数获得第一至第三子像素的输出信号 基于第一至第三子像素的输入信号和扩展系数，获得第四子像素校正值作为第四子像素的输出信号的校正值 并且基于要输出到第四子像素的第一至第三子像素的输入信号，展开系数和第四子像素校正值来获得第四子像素的输出信号。