公开(公告)号：US20190250325A1

公开(公告)日：2019-08-15

申请号：US16391962

申请日：2019-04-23

Applicant: Japan Display Inc.

Inventor： Toshinori Uehara ,  Hayato Kurasawa ,  Masashi Mitsui

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0035 ,  G02B6/0036 ,  G02B6/004 ,  G02B6/0041 ,  G02B6/0043 ,  G02B6/0055 ,  G02B6/0065

Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.

公开(公告)号：US10310166B2

公开(公告)日：2019-06-04

申请号：US15093027

申请日：2016-04-07

Applicant: Japan Display Inc.

Inventor： Toshinori Uehara ,  Hayato Kurasawa ,  Masashi Mitsui

IPC: F21V8/00

Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.

公开(公告)号：US09262970B2

公开(公告)日：2016-02-16

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: G09G3/36 ,  G09G3/34 ,  G06F1/32

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：US09091877B2

公开(公告)日：2015-07-28

申请号：US14155872

申请日：2014-01-15

Applicant: Japan Display Inc.

Inventor： Masaya Tamaki ,  Masashi Mitsui ,  Yoko Fukunaga

IPC: G02F1/1335 ,  G02F1/13363

CPC classification number: G02F1/133504 ,  G02B5/0257 ,  G02B5/0278 ,  G02F1/133553 ,  G02F1/133555 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2203/02

Abstract: A display device includes a reflective image display unit having a sheet-like anisotropic scattering member. The sheet-like anisotropic scattering member has a surface in which both a low refractive index area and a high refractive index area exist. The sheet-like anisotropic scattering member is disposed so that a light enters from a first surface thereof and exits as scattered light from a second surface thereof, when an extent of refractive index difference at a boundary or vicinity thereof between the low refractive index area and the high refractive index area is relatively large in the first surface and relatively small in the second surface.

公开(公告)号：US09025114B2

公开(公告)日：2015-05-05

申请号：US13741943

申请日：2013-01-15

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 in such a way 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.

Abstract translation: 本文公开了一种显示装置，其包括具有片状各向异性散射部件的反射型图像显示部。 在各向异性散射构件的面内方向的区域中，以混合形式设置低折射率区域和高折射率区域。 各向异性散射部件被配置为当外部光从表面侧入射时，散射光，其中折射率变化程度在低折射率区域之间的边界附近 并且高折射率区域相对较大，并且从低折射率区域和高折射率区域之间的边界附近的折射率变化程度的表面侧是 比较小

公开(公告)号：US11774812B2

公开(公告)日：2023-10-03

申请号：US17698158

申请日：2022-03-18

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui ,  Takeo Koito ,  Tae Kurokawa

IPC: G02F1/1347 ,  G02F1/1343 ,  G02F1/1335

CPC classification number: G02F1/1347 ,  G02F1/133528 ,  G02F1/134318

Abstract: According to one embodiment, an optical control device includes a first liquid crystal cell and a second liquid crystal cell. The second liquid crystal cell is stacked on the first liquid crystal cell. The first liquid crystal cell has a function of modulating and converting a first polarization component of incident light into a second polarization component, and hardly modulating and converting a third polarization component of incident light into a fourth polarization component. The second liquid crystal cell has a function of hardly modulating the second polarization component transmitted through the first liquid crystal cell, and modulating the fourth polarization component transmitted through the first liquid crystal cell.

公开(公告)号：US10901141B2

公开(公告)日：2021-01-26

申请号：US16391962

申请日：2019-04-23

Applicant: Japan Display Inc.

Inventor： Toshinori Uehara ,  Hayato Kurasawa ,  Masashi Mitsui

IPC: F21V8/00

Abstract: According to one embodiment, a display device includes a display panel, a light source, a lightguide, and reflective elements. The lightguide includes a first end facing the light source, a first surface opposed to the display panel, and a second surface. The reflective elements are disposed inside the lightguide, the elements configured to reflect light passing through the first end to spread in the lightguide and to transmit the light through the first surface. Reflective elements are arranged to be apart from the first or second surface with a certain distance and has a reflective surface facing the first surface and projects toward the second surface, the reflective surface is inclined such that the light from the first end can be irradiated to the first surface.

公开(公告)号：US10755660B2

公开(公告)日：2020-08-25

申请号：US16157291

申请日：2018-10-11

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui ,  Susumu Kimura ,  Yutaka Mitsuzawa

IPC: G09G3/36

Abstract: A display device includes an array of sub-pixels, each of which include a memory to store sub-pixel data. The display device also includes a plurality of memory selection line groups respectively corresponding to the sub-pixel memories in rows of the array. The memory selection line groups are operated under control of a memory selection circuit, which outputs a memory selection signal based on a set value, thereby to perform sequential switching of memory selection lines. The sequential switching of the memory selection lines results in a sequential switching of the image being displayed.

公开(公告)号：US10359664B2

公开(公告)日：2019-07-23

申请号：US15956191

申请日：2018-04-18

Applicant: Japan Display Inc.

Inventor： Masaya Tamaki ,  Yoko Fukunaga ,  Masashi Mitsui ,  Susumu Kimura

IPC: G02F1/1335 ,  G02F1/1339 ,  G02F1/1343

Abstract: A display device includes a display surface with pixels including four sub-pixels of four colors, and being arrayed in a matrix of a first viewing angle direction and a second viewing angle direction orthogonal thereto. The first viewing angle direction in a direction parallel to the display surface of a main viewing angle direction that intersects with the display surface. A reflective member, first substrate, a second substrate facing the first substrate, a color filter with filters of four colors corresponding to the four sub-pixels, and a scattering member is provided on the second substrate. For the color filter, a change in transmittance of the filters per pixel in the main viewing angle direction is smaller than a change in transmittance of the filters per pixel in a direction orthogonal to the first viewing angle direction in the second viewing angle direction parallel to the display surface.

公开(公告)号：US10127885B2

公开(公告)日：2018-11-13

申请号：US14723667

申请日：2015-05-28

Applicant: Japan Display Inc.

Inventor： Masashi Mitsui

IPC: G09G5/02 ,  G09G3/34 ,  G09G3/36

Abstract: According to an aspect, a display device includes an image display panel in which pixels are arranged; and a signal processing unit that converts input values of input signals including color information of a certain color represented in a reference color gamut into extended values in an extended color space to generate output signals. The signal processing unit corrects the input values of the input signals into input values of corrected input signals including color information of a corrected color so as to correct the certain color into the corrected color that is a color positioned in a direction away from a white point, determines an expansion coefficient, and obtains the output signals for first to fourth sub-pixels based on at least the corrected input signals and the expansion coefficient.