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    Display device and control method of display device
    12.
    发明授权
    Display device and control method of display device 有权

    公开(公告)号：US10714026B2

    公开(公告)日：2020-07-14

    申请号：US16218555

    申请日：2018-12-13

    Applicant: Japan Display Inc.

    Inventor： Tenfu Nakamura ,  Kentaro Okuyama ,  Tae Kurokawa

    IPC: G09G3/34 ,  G02F1/1334 ,  G02F1/13357

    Abstract: According to one embodiment, a display device including a plurality of light sources of different luminous colors, a first substrate, a second substrate opposed to the first substrate, a liquid crystal layer interposed between the first and second substrates, to which light from the light sources enters, a display area on which an image is displayed, and a drive circuit configured to control quantity of light from each of the light sources on the basis of an analyzation result of an image signal used to display the image.

    Display device and method
    13.
    发明授权
    Display device and method 有权

    公开(公告)号：US10268089B2

    公开(公告)日：2019-04-23

    申请号：US14717289

    申请日：2015-05-20

    Applicant: Japan Display Inc.

    Inventor： Tae Kurokawa ,  Akira Sakaigawa ,  Masaaki Kabe ,  Kojiro Ikeda ,  Amane Higashi

    IPC: G02F1/1335 ,  G02F1/1343

    Abstract: According to one embodiment, a display device includes a display panel, a light source, a light guide and a prism sheet. The display panel includes a display area in which unit pixels each containing first sub-pixels and second sub-pixels are arranged along a first direction and a second direction. In the display area, the first sub-pixels have a width different from that of the second sub-pixel in at least one of the first direction and the second direction, or each unit pixel contains different numbers of first sub-pixels and second sub-pixels. The prism sheet is interposed between the light guide and the display panel and includes prisms extending along a third direction inclined with respect to the second direction by an acute angle of inclination.

    Display device
    15.
    发明授权
    Display device 有权

    公开(公告)号：US09728161B2

    公开(公告)日：2017-08-08

    申请号：US14692957

    申请日：2015-04-22

    Applicant: Japan Display Inc.

    Inventor： Kojiro Ikeda ,  Toshiyuki Nagatsuma ,  Masaaki Kabe ,  Amane Higashi ,  Tae Kurokawa ,  Fumitaka Gotoh ,  Akira Sakaigawa

    IPC: G09G5/02 ,  G09G5/10 ,  G09G3/36

    CPC classification number: G09G5/10 ,  G09G3/3607 ,  G09G3/3648 ,  G09G5/02 ,  G09G2300/0452 ,  G09G2340/0457 ,  G09G2340/06 ,  G09G2360/16

    Abstract: A display device includes a signal processing unit that receives input signals, and calculates output signals to a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The signal processing unit calculates a frequency of pixels belonging to each of a plurality of partitions using a light quantity of a surface light source. The signal processing unit calculates an index value for each of the partitions by at least multiplying the cumulative frequency being obtained by sequentially adding the frequency of pixels from a partition having the maximum light quantity among the partitions, and the number of partitions representing a position of a partition to which the cumulative frequency belongs counted from the partition having the maximum light quantity. The signal processing unit controls luminance of the surface light source based on a partition in which the index value exceeds a threshold.

    Display device and electronic apparatus
    16.
    发明授权
    Display device and electronic apparatus 有权
    显示设备和电子设备

    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。

    Liquid crystal light control device
    17.
    发明授权
    Liquid crystal light control device 有权

    公开(公告)号：US12216363B2

    公开(公告)日：2025-02-04

    申请号：US18231306

    申请日：2023-08-08

    Applicant: Japan Display Inc.

    Inventor： Tae Kurokawa ,  Takeo Koito ,  Kojiro Ikeda

    IPC: G02F1/1343 ,  G02F1/1337 ,  G02F1/1347

    Abstract: A liquid crystal light control device in an embodiment according to the present invention includes a first liquid crystal cell, a second liquid crystal cell overlapping the first liquid crystal cell, a third liquid crystal cell overlapping the second liquid crystal cell, and a fourth liquid crystal cell overlapping the third liquid crystal, each of the first liquid crystal cell, the second liquid crystal cell, the third liquid crystal cell, and the fourth liquid crystal cell includes a first substrate arranged with a first electrode having a strip pattern, a second substrate arranged with a second electrode having a strip pattern, and a liquid crystal layer between the first substrate and the second substrate. The first substrate and the second substrate are arranged with a longitudinal direction of the strip pattern of the first electrode and second electrode intersecting.

    Light control device and illumination device
    20.
    发明授权
    Light control device and illumination device 有权

    公开(公告)号：US11656527B2

    公开(公告)日：2023-05-23

    申请号：US17881623

    申请日：2022-08-05

    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.

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