公开(公告)号：US20240078965A1

公开(公告)日：2024-03-07

申请号：US18241575

申请日：2023-09-01

Applicant: Japan Display Inc.

Inventor： Kazunari TOMIZAWA ,  Kazuhiko SAKO ,  Tsutomu HARADA

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0673

Abstract: A display device includes a plurality of light-emitting elements, and a control circuit configured to control drive of the light-emitting elements. The control circuit divides one frame period into a plurality of subframe periods having different lengths and controls light emission and non-emission of the light-emitting elements for each of the subframe periods.

公开(公告)号：US20220351675A1

公开(公告)日：2022-11-03

申请号：US17727058

申请日：2022-04-22

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Kazunari TOMIZAWA ,  Tsutomu HARADA

IPC: G09G3/32

Abstract: 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：US20170359558A1

公开(公告)日：2017-12-14

申请号：US15617468

申请日：2017-06-08

Applicant: Japan Display Inc.

Inventor： Tsutomu HARADA ,  Kazuhiko SAKO

IPC: H04N9/31 ,  G02B27/01 ,  B60K35/00

Abstract: According to one embodiment, when displaying an image on a display panel, projecting an image which is displayed on the display panel, inclining the image which is projected from the display panel at a predetermined angle of bend, and reflecting the image which is projected from the display panel via a prism and guiding the image to a projection surface, a display device corrects input picture image of the prism based on characteristics contrary to the chromatic aberration characteristics of the prism.

公开(公告)号：US20160358558A1

公开(公告)日：2016-12-08

申请号：US15168890

申请日：2016-05-31

Applicant: Japan Display Inc.

Inventor： Naoyuki TAKASAKI ,  Tsutomu HARADA ,  Kazuhiko SAKO

IPC: G09G3/34

CPC classification number: G09G3/342 ,  G09G3/3648 ,  G09G3/3666 ,  G09G2300/0452 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2360/16

Abstract: According to an aspect, a display device includes an image display panel; a planar light source including a light guide plate, a first sidelight light source, and a second sidelight light source; and a control unit. The control unit sets first luminance determination blocks in a first display surface of the image display panel and identifies a first luminance determination block to be a target of luminance correction by referring to luminance information on the light sources. The control unit sets second luminance determination blocks in a second display surface of the image display panel and identifies a second luminance determination block to be a target of luminance correction by referring to the luminance information on the light sources. The control unit controls light source lighting amounts of the respective light sources to satisfy luminance of the identified first luminance determination block and the identified second luminance determination block.

Abstract translation: 根据一个方面，显示装置包括图像显示面板; 包括导光板，第一侧光源和第二侧光源的平面光源; 和控制单元。 控制单元在图像显示面板的第一显示面上设置第一亮度判定块，并参照光源的亮度信息，将第一亮度判定块识别为亮度校正对象。 控制单元在图像显示面板的第二显示面上设定第二亮度判定块，并参照光源的亮度信息来识别作为亮度校正对象的第二亮度判定块。 控制单元控制各个光源的光源照射量以满足所识别的第一亮度确定块和所识别的第二亮度确定块的亮度。

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：US20240410768A1

公开(公告)日：2024-12-12

申请号：US18674068

申请日：2024-05-24

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO

IPC: G01L1/20

Abstract: A force detection device includes a force sensor to which a load is applied. The force sensor includes a base, a first circuit formation layer, a sensor layer, and a second circuit formation layer stacked in order, the first circuit formation layer includes a first surface facing the sensor layer, a plurality of first detection electrodes disposed on the first surface, and a plurality of first individual detection regions divided corresponding to the first detection electrodes, and the second circuit formation layer includes a second surface facing the sensor layer, a detection surface facing opposite to the second surface and to which the load is applied, a plurality of second detection electrodes disposed on the second surface, and a plurality of second individual detection regions divided corresponding to the second detection electrodes.

公开(公告)号：US20230298512A1

公开(公告)日：2023-09-21

申请号：US18137817

申请日：2023-04-21

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Kazunari TOMIZAWA ,  Tsutomu HARADA

IPC: G09G3/32 ,  G09G3/20

CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G3/3258 ,  G09G2320/0271 ,  G09G2360/16

Abstract: 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：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：US20190107754A1

公开(公告)日：2019-04-11

申请号：US16150949

申请日：2018-10-03

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Tsutomu HARADA

IPC: G02F1/1335 ,  G02F1/1333 ,  G09G3/34 ,  G09G3/36

CPC classification number: G02F1/133603 ,  G02F1/133308 ,  G02F2001/133317 ,  G09G3/20 ,  G09G3/3426 ,  G09G3/3648

Abstract: According to an aspect, a display device includes: a display panel having a display area including a plurality of pixels; and an illuminator provided so as to overlap the display panel and configured to illuminate the display area. The illuminator has a plurality of segment blocks set in different positions in the display area. Each of the segment blocks is provided such that the luminance of the segment block is individually controlled. At least one of the segment blocks satisfies a predetermined condition. The predetermined condition is such that at least two light source rows each including a plurality of light sources arranged in a first direction are arranged in a second direction intersecting the first direction, and that none of the light sources included in the two light source rows adjacent in the second direction are in the same straight line along the second direction.

公开(公告)号：US20190064559A1

公开(公告)日：2019-02-28

申请号：US16106537

申请日：2018-08-21

Applicant: Japan Display Inc.

Inventor： Tsutomu HARADA ,  Daichi SUZUKI ,  Kazuhiko SAKO ,  Naoyuki TAKASAKI ,  Kazunari TOMIZAWA

IPC: G02F1/13357 ,  G09G3/34 ,  G09G3/36 ,  F21V8/00

Abstract: According to an aspect, a display device includes: a display panel including a display area provided with pixels; an illuminator including an illumination area configured to emit light to the display panel such that the display area is illuminated from one surface side of the display panel; and a liquid crystal dimming panel overlapping the display panel, and including a dimming area configured to be adjusted in transmittance of the light emitted to another surface side of the display panel through the display area. The illumination area includes first segment regions configured such that luminance levels thereof are individually adjusted. The dimming area includes second segment regions configured such that the light transmittances thereof are individually adjusted. Each of the first segment regions overlaps more than one of the second segment regions. Each of the second segment regions overlaps more than one of the pixels.