公开(公告)号：US10048527B2

公开(公告)日：2018-08-14

申请号：US15248491

申请日：2016-08-26

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui ,  Yoko Fukunaga

IPC: G02F1/1335 ,  G02F1/133 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/13363 ,  G02F1/1362 ,  G02F1/1368 ,  G02F1/1333

Abstract: A reflective liquid crystal display device includes a first substrate provided with a reflective electrode, a second substrate provided with a transparent electrode, a liquid crystal layer disposed between the first substrate and the second substrate, and an anisotropic scattering member formed on the second substrate. The anisotropic scattering member has first and second surfaces each including a first refractive index region and a second refractive index region having a refractive index different from that of the first refractive index region. A refractive index difference between the first refractive index region and the second refractive index region in the first surface is larger than that in the second surface. The anisotropic scattering member is disposed so that light enters from the first surface thereof and the light exits as scattered light from the second surface thereof. A phase difference is given to the light entered the anisotropic scattering member.

公开(公告)号：US09734772B2

公开(公告)日：2017-08-15

申请号：US14695072

申请日：2015-04-24

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui ,  Toshiyuki Nagatsuma

IPC: G09G3/36 ,  G09G3/20 ,  G09G5/24

CPC classification number: G09G3/3607 ,  G09G3/2066 ,  G09G3/2081 ,  G09G3/3648 ,  G09G5/243 ,  G09G2300/0452 ,  G09G2320/04 ,  G09G2320/0666 ,  G09G2330/021 ,  G09G2340/06 ,  G09G2340/145

Abstract: A display device includes: a display unit including pixels arranged in a matrix therein, each of the pixels including a first sub-pixel that displays a first color component, a second sub-pixel that displays a second color component, a third sub-pixel that displays a third color component, and a fourth sub-pixel that displays a fourth color component; and a signal processing unit that receives input signals that are capable of being displayed with the first sub-pixel, the second sub-pixel, and the third sub-pixel, and calculates output signals to the first, second, third, and fourth sub-pixels. The signal processing unit generates converted input signals with changed saturation among the input signals. The signal processing unit calculates output signals to the first sub-pixel, the second sub-pixel, and the third sub-pixel based on the converted input signals and an amount of increase in brightness caused by the fourth sub-pixel.

公开(公告)号：US09726926B2

公开(公告)日：2017-08-08

申请号：US15353205

申请日：2016-11-16

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui

IPC: G02F1/1335 ,  G02B5/02

CPC classification number: G02F1/133504 ,  G02B5/0236 ,  G02B5/0257 ,  G02B5/0289 ,  G02B5/0294 ,  G02B2207/123 ,  G02F1/133553

Abstract: Disclosed herein is a display device including a reflection type image display portion having a sheet-like anisotropic scattering member. In an area, in an in-plane direction, of the anisotropic scattering member, a low-refractive index area and a high-refractive index area are disposed in a mixture style. The anisotropic scattering member is disposed so that a light is scattered when an outside light is made incident from a surface side on which a degree of a change in a refractive index in a vicinity of a boundary between the low-refractive index area and the high-refractive index area is relatively large, and is emitted from a surface side on which the degree of the change in the refractive index in the vicinity of the boundary between the low-refractive index area and the high-refractive index area is relatively small.

公开(公告)号：US09311886B2

公开(公告)日：2016-04-12

申请号：US14073443

申请日：2013-11-06

Applicant: Japan Display Inc.

Inventor： Kojiro Ikeda ,  Fumitaka Goto ,  Tae Nakahara ,  Masashi Mitsui ,  Amane Higashi ,  Hiroki Uchiyama ,  Toshiyuki Nagatsuma ,  Hirokazu Tatsuno ,  Masaaki Kabe ,  Akira Sakaigawa

IPC: G09G5/00 ,  G09G3/36 ,  G09G5/02

CPC classification number: G09G5/02 ,  G09G3/3648 ,  G09G2300/0452 ,  G09G2340/06

Abstract: According to an aspect, a display device includes an image display panel on which pixels each including sub-pixels for displaying a first color, a second color, a third color, and a fourth color are arranged, and a signal processing unit that converts an input value of an input signal for an input HSV color space into an output signal for an extended HSV color space. The signal processing unit divides the extended HSV color space into a plurality of spaces, sets limit proportion values different from each other with respect to at least two spaces of the divided spaces respectively, calculates an extension coefficient α with respect to the input signal by using the input signal and a limit proportion value set with respect to a space according to the input signal, and calculates the output signal based on at least the input signal and the extension coefficient α.

Abstract translation: 根据本发明的一个方面，一种显示装置包括图像显示面板，在该图像显示面板上布置有各自包括用于显示第一颜色，第二颜色，第三颜色和第四颜色的子像素的像素，以及信号处理单元， 用于输入HSV色彩空间的输入信号的输入值作为扩展HSV色彩空间的输出信号。 信号处理单元将扩展HSV颜色空间分割为多个空格，分别相对于分割空间的至少两个空格设定彼此不同的极限比例值，通过使用相对于输入信号计算扩展系数α 输入信号和根据输入信号相对于空间设置的限制比例值，并且至少基于输入信号和扩展系数α来计算输出信号。

公开(公告)号：US09280015B2

公开(公告)日：2016-03-08

申请号：US14198263

申请日：2014-03-05

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui ,  Masaya Tamaki ,  Yoko Fukunaga

IPC: G02F1/1335 ,  G02B5/02 ,  G02F1/13363

CPC classification number: G02F1/133504 ,  G02B5/0257 ,  G02B5/0289 ,  G02F1/133524 ,  G02F1/133555 ,  G02F2001/133541 ,  G02F2001/133638

Abstract: A liquid crystal display device includes a first substrate provided with a reflective electrode, a second substrate provided with a transparent electrode oppositely disposed to the reflective electrode, a liquid crystal layer disposed between the first second substrates, a polarization plate oppositely disposed to the first substrate with an interposition of the second substrate, and an anisotropic scattering member disposed between the second substrate and the polarization plate. A main view angle direction is set as a predetermined direction intersecting a display surface. The anisotropic scattering member has a scattering center and scatters light traveling along a scattering axis direction which is a direction having a predetermined angle range centered around the scattering center. The scattering axis direction coincides with the main view angle direction.

Abstract translation: 液晶显示装置包括设置有反射电极的第一基板，设置有与反射电极相对设置的透明电极的第二基板，设置在第一第二基板之间的液晶层，与第一基板相对设置的偏光板 具有第二基板和第二基板与偏光板之间的各向异性散射部件的插入。 主视角方向设定为与显示面交叉的规定方向。 各向异性散射构件具有散射中心，散射以散射中心为中心的具有预定角度范围的方向的散射轴方向散射的光。 散射轴方向与主视角方向一致。

公开(公告)号：US20140168284A1

公开(公告)日：2014-06-19

申请号：US14086476

申请日：2013-11-21

Applicant: Japan Display Inc.

Inventor： Masaaki Kabe ,  Toshiyuki Nagatsuma ,  Amane Higashi ,  Kojiro Ikeda ,  Tae Kurokawa ,  Masashi Mitsui ,  Hiroki Uchiyama ,  Hirokazu Tatsuno ,  Fumitaka Goto ,  Akira Sakaigawa

IPC: G09G3/36 ,  G09G3/20

CPC classification number: G09G3/3607 ,  G09G3/2003 ,  G09G3/3648 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2340/06 ,  G09G2360/16

Abstract: According to an aspect, a display device includes a first sub-pixel, a second sub-pixel, a third sub-pixel; and a fourth sub-pixel. A signal obtained based on at least an input signal for the first sub-pixel and an extension coefficient is supplied to the first sub-pixel. A signal obtained based on at least an input signal for the second sub-pixel and the extension coefficient is supplied to the second sub-pixel. A signal obtained based on at least an input signal for the third sub-pixel and the extension coefficient is supplied to the third sub-pixel. A signal obtained based on at least the input signal for the first sub-pixel, the input signal for the second sub-pixel, the input signal for the third sub-pixel, and the extension coefficient is supplied to the fourth sub-pixel. The extension coefficient varies based on at least a saturation of the input signals.

Abstract translation: 根据一个方面，显示装置包括第一子像素，第二子像素，第三子像素; 和第四子像素。 至少基于第一子像素的输入信号获得的信号和扩展系数被提供给第一子像素。 至少基于第二子像素的输入信号获得的信号和扩展系数被提供给第二子像素。 至少基于第三子像素的输入信号获得的信号和扩展系数被提供给第三子像素。 基于至少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和扩展系数获得的信号被提供给第四子像素。 扩展系数至少基于输入信号的饱和度而变化。

公开(公告)号：US11940710B2

公开(公告)日：2024-03-26

申请号：US18299083

申请日：2023-04-12

Applicant: Japan Display Inc.

Inventor： Tae Kurokawa ,  Takeo Koito ,  Masashi Mitsui

IPC: G02F1/29 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/29 ,  G02F1/133738 ,  G02F1/133742 ,  G02F1/134309 ,  G02F2201/122 ,  G02F2203/07

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell including a first liquid crystal layer, a second liquid crystal cell including a second liquid crystal layer, and a polarization conversion element. The first liquid crystal layer and the second liquid crystal layer each includes a first region which scatters a first polarized component and transmits a second polarized component and a second region which transmits the first polarized component and scatters the second polarized component. The polarization conversion element overlaps the first region and the second region, converts the first polarized component into the second polarized component, and converts the second polarized component into the first polarized component.

公开(公告)号：US11934082B2

公开(公告)日：2024-03-19

申请号：US17659394

申请日：2022-04-15

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Masashi Mitsui ,  Tae Kurokawa

IPC: G02F1/29 ,  G02F1/1343 ,  G02F1/1347

CPC classification number: G02F1/29 ,  G02F1/134309 ,  G02F1/13471 ,  G02F2202/28

Abstract: According to one embodiment, a light control device includes a first substrate including a plurality of first control electrodes disposed in an effective area, and a plurality of feed lines disposed in a peripheral area, a second substrate, and a first liquid crystal layer. The first control electrodes are transparent electrodes. Each of the first control electrodes includes, in the effective area, first segments crossing a first direction at a first angle, second segments crossing the first direction at a second angle, and third segments crossing the first direction at a third angle. The first control electrode is electrically connected to the feed line. The first to third angles are different from each other.

公开(公告)号：US11921384B2

公开(公告)日：2024-03-05

申请号：US17881610

申请日：2022-08-05

Applicant: Japan Display Inc.

Inventor： Takeo Koito ,  Tae Kurokawa ,  Masashi Mitsui

IPC: G02F1/1347 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/1343 ,  G02F1/137 ,  G02F1/29

CPC classification number: G02F1/1347 ,  G02F1/133528 ,  G02F1/13362 ,  G02F1/134309 ,  G02F1/13756 ,  G02F1/29

Abstract: According to one embodiment, a light control device includes a first liquid crystal cell, a second liquid crystal cell, and a polarization conversion element disposed between the first liquid crystal cell and the second liquid crystal cell. One substrate of each of the first liquid crystal cell and the second liquid crystal cell includes an insulating substrate, and first to fourth electrodes arranged on the insulating substrate and formed in a strip shape. The electric potential difference between the first electrode and the second electrode, the electric potential difference between the second electrode and the third electrode, and the electric potential difference between the third electrode and the fourth electrode are different from each other.

公开(公告)号：US10401672B2

公开(公告)日：2019-09-03

申请号：US15641884

申请日：2017-07-05

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui

IPC: G02F1/1335 ,  G02B5/02

Abstract: Disclosed herein is a display device including a reflection type image display portion having a sheet-like anisotropic scattering member. In an area, in an in-plane direction, of the anisotropic scattering member, a low-refractive index area and a high-refractive index area are disposed in a mixture style. The anisotropic scattering member is disposed so that a light is scattered when an outside light is made incident from a surface side on which a degree of a change in a refractive index in a vicinity of a boundary between the low-refractive index area and the high-refractive index area is relatively large, and is emitted from a surface side on which the degree of the change in the refractive index in the vicinity of the boundary between the low-refractive index area and the high-refractive index area is relatively small.