公开(公告)号：US12032262B2

公开(公告)日：2024-07-09

申请号：US17313164

申请日：2021-05-06

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa

IPC分类号： G02F1/1685 ,  G02F1/1335 ,  G02F1/167 ,  G02F1/1676 ,  G02F1/1677

CPC分类号： G02F1/1685 ,  G02F1/133514 ,  G02F1/167 ,  G02F1/1676 ,  G02F1/1677

摘要： According to an aspect, a display device includes: a display substrate; and a filter provided on a display surface side of the display substrate. The filter includes a first sub-pixel area provided with a first color filter, a second sub-pixel area provided with a second color filter, a third sub-pixel area provided with a third color filter, and a colorless fourth sub-pixel area. The display substrate includes a plurality of pixels provided so as to be capable of individually switching each sub-pixel between white, black, and red, and each of the pixels includes a first sub-pixel overlapping the first sub-pixel area, a second sub-pixel overlapping the second sub-pixel area, a third sub-pixel overlapping the third sub-pixel area, and a fourth sub-pixel overlapping the fourth sub-pixel area.

公开(公告)号：US11789322B2

公开(公告)日：2023-10-17

申请号：US18148607

申请日：2022-12-30

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa ,  Tsutomu Harada

IPC分类号： G02F1/1343 ,  G09G3/36 ,  G02F1/1362 ,  G09G3/20 ,  G02F1/1335

CPC分类号： G02F1/134345 ,  G02F1/1362 ,  G09G3/2074 ,  G09G3/3607 ,  G02F1/133514 ,  G02F1/134336 ,  G02F2201/123 ,  G02F2201/52 ,  G02F2203/30

摘要： According to one embodiment, a display device includes a plurality of red subpixels, a plurality of green subpixels, and a plurality of blue subpixels, wherein, in a first direction, the red subpixel and the green subpixel, the green subpixel and the blue subpixel, and the blue subpixel and the red subpixel are arranged to be adjacent to each other, and in a second direction, the red subpixel and the blue subpixel, the blue subpixel and the green subpixel, and the green subpixel and the red subpixel are arranged to be adjacent to each other, and in the subpixels, as to subpixel columns adjacent to each other, when an image signal of the same gradation is input with respect to the subpixels of same color, brightness of one subpixel column is higher than that of another subpixel column.

公开(公告)号：US10726802B2

公开(公告)日：2020-07-28

申请号：US16355020

申请日：2019-03-15

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa

IPC分类号： G09G3/36 ,  G09G3/34

摘要： According to one embodiment, a display device includes a display panel and a conversion circuit. The display panel is with a first pixel including subpixels of red, first green which is tinged red as compared to a reference green, and blue, and a second pixel including subpixels of red, second green which is tinged blue as compared to the reference green, and blue, where the first pixel and the second pixel are arranged alternately. The conversion circuit is configured to generate a four primary color image of red, first green, second green, and blue from a three primary color image of red, reference green, and blue and to perform rendering the first image and the second image from the four primary color image.

公开(公告)号：US20190304387A1

公开(公告)日：2019-10-03

申请号：US16363692

申请日：2019-03-25

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa

IPC分类号： G09G3/36

摘要： A display device includes: a display unit including sub-pixels; and a signal processor configured to output output signals based on pixel data. A set of the sub-pixels includes first to fourth sub-pixels. The fourth sub-pixel is assigned a first color component as a white component in one of the two pieces of the pixel data arranged in one direction. The first to third sub-pixels are assigned second color components other than the first color component. When a signal level for lighting one or more of the first to third sub-pixels in the set of the sub-pixels is at a first level, and a signal level for one or more of the first to third sub-pixels is at a second level lower than the first level, the signal processor increases the signal levels corresponding to the second color components as a signal level corresponding to the first color component increases.

公开(公告)号：US10297231B2

公开(公告)日：2019-05-21

申请号：US15677326

申请日：2017-08-15

申请人： Japan Display Inc.

发明人： Kazuhiko Sako ,  Kazunari Tomizawa ,  Tsutomu Harada ,  Naoyuki Takasaki ,  Tae Kurokawa

IPC分类号： G09G5/10 ,  G06T5/00 ,  G09G3/34 ,  G09G3/36 ,  G09G3/3208

摘要： According to an aspect, a display apparatus includes: an image display panel including a plurality of pixels and displaying an image; and a signal processor generating a second signal by multiplying signal values for a plurality of sub-pixels making up each of the plurality of pixels by a gain, the signal values being included in a first signal that is an input signal of the image. The the signal processor calculates a luminance of each of the plurality of pixels based on the signal values of the sub-pixels included in the respective pixels. The signal processor increases the gain by which the signal values of the sub-pixels of the pixel having a luminance greater than a first luminance threshold are multiplied, in accordance with the luminance of the corresponding pixel.

公开(公告)号：US11869394B2

公开(公告)日：2024-01-09

申请号：US18109041

申请日：2023-02-13

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa ,  Takeo Koito

IPC分类号： G09G3/00 ,  G09G3/36 ,  F21V8/00

CPC分类号： G09G3/001 ,  G02B6/0035 ,  G09G3/36 ,  G09G2300/0439 ,  G09G2320/0209 ,  G09G2320/068

摘要： According to an aspect, a display device includes: a liquid crystal display panel provided with a plurality of pixels; and a light source provided with a plurality of light emission points. The ratio of a pitch of the pixels arranged in a predetermined direction to a pitch of the light emission points arranged in the predetermined direction is 1:4n or 1:6n, and n is a natural number.

公开(公告)号：US11682360B2

公开(公告)日：2023-06-20

申请号：US17408587

申请日：2021-08-23

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa ,  Ayato Kitamura

IPC分类号： G09G3/36 ,  G09G3/20 ,  G09G3/3208 ,  H04N9/64 ,  H04N9/77

CPC分类号： G09G3/3607 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/2022 ,  G09G3/3208 ,  H04N9/64 ,  H04N9/77 ,  G09G2300/0452 ,  G09G2310/08 ,  G09G2320/0271 ,  G09G2340/06

摘要： A display device includes: a display panel including pixels for displaying a first color, a second color, a third color, and a fourth color; and a signal processor configured to convert an image signal including gradation data of the first to third colors into a first signal including gradation data of the first to third colors and a second signal including a gradation datum of the fourth color and output the first and second signals. When the gradation data of the image signal have the same value, output signals from the signal processor include an output signal in which the gradation data of the first signal and the gradation datum of the second signal have the same value and an output signal in which the gradation data of the first signal and the gradation datum of the second signal have values different from each other by 1.

公开(公告)号：US11663959B2

公开(公告)日：2023-05-30

申请号：US17727058

申请日：2022-04-22

申请人： Japan Display Inc.

发明人： Kazuhiko Sako ,  Kazunari Tomizawa ,  Tsutomu Harada

IPC分类号： G09G3/32 ,  G09G3/20 ,  G09G3/3258

CPC分类号： G09G3/32 ,  G09G3/2007 ,  G09G3/3258 ,  G09G2320/0271 ,  G09G2340/06 ,  G09G2360/16

摘要： According to an aspect, a display device includes a pixel including a first sub-pixel configured to emit light having a peak in a spectrum of red, a second sub-pixel configured to emit light having a peak in a spectrum of green, and a third sub-pixel configured to emit light having a peak in a spectrum of blue. The first sub-pixel, the second sub-pixel, and the third sub-pixel are inorganic light-emitting diodes. A light emission intensity of the second sub-pixel is increased at a predetermined ratio with respect to a light emission intensity of the first sub-pixel when the first sub-pixel emits light at a light emission intensity within a low-luminance range equal to or lower than a predetermined level of luminance.

公开(公告)号：US11573461B2

公开(公告)日：2023-02-07

申请号：US17846826

申请日：2022-06-22

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa ,  Tsutomu Harada

IPC分类号： G02F1/1343 ,  G09G3/36 ,  G02F1/1362 ,  G09G3/20 ,  G02F1/1335

摘要： According to one embodiment, a display device includes a plurality of red subpixels, a plurality of green subpixels, and a plurality of blue subpixels, wherein, in a first direction, the red subpixel and the green subpixel, the green subpixel and the blue subpixel, and the blue subpixel and the red subpixel are arranged to be adjacent to each other, and in a second direction, the red subpixel and the blue subpixel, the blue subpixel and the green subpixel, and the green subpixel and the red subpixel are arranged to be adjacent to each other, and in the subpixels, as to subpixel columns adjacent to each other, when an image signal of the same gradation is input with respect to the subpixels of same color, brightness of one subpixel column is higher than that of another subpixel column.

公开(公告)号：US11127361B2

公开(公告)日：2021-09-21

申请号：US16502321

申请日：2019-07-03

申请人： Japan Display Inc.

发明人： Yasuo Saruhashi ,  Kazunari Tomizawa

IPC分类号： G09G3/36

摘要： According to one embodiment, a display device includes a display panel on which first pixels and second pixels are alternately arranged in the columnar direction, and a display controller configured to input a first image signal and to display an image. The first pixels and the second pixels are arranged such that first sub-pixels are adjacent to third sub-pixels in the columnar direction. The display controller is configured to execute conversion of converting the input first image signal into a second image signal, vary the luminance values of the third sub-pixels in the second image signal based on the luminance values of the third sub-pixels in the first image signal which become unable to be represented in the display panel.