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    Display device
    1.
    发明授权
    Display device 有权

    公开(公告)号：US12147130B2

    公开(公告)日：2024-11-19

    申请号：US17972904

    申请日：2022-10-25

    Applicant: Japan Display Inc.

    Inventor： Kazunari Tomizawa ,  Tsutomu Harada ,  Junji Kobashi ,  Shinichiro Oka ,  Yosuke Hyodo

    IPC: G02F1/1347 ,  G02F1/1335

    Abstract: According to one embodiment, in a display device a first panel includes a first polarizing plate, a second polarizing plate, and a first liquid crystal panel interposed between the first polarizing plate and the second polarizing plate, a second panel includes a third polarizing plate, a fourth polarizing plate, and a second liquid crystal panel interposed between the third polarizing plate and the fourth polarizing plat, and a polarizing plate, which is located second from a surface close to an illumination device and a surface closest to an observer, has an extinction ratio that is lower than that of each of the other polarizing plates.

    Display device
    2.
    发明授权
    Display device 有权

    公开(公告)号：US12032262B2

    公开(公告)日：2024-07-09

    申请号：US17313164

    申请日：2021-05-06

    Applicant: Japan Display Inc.

    Inventor： Kazunari Tomizawa

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

    CPC classification number: G02F1/1685 ,  G02F1/133514 ,  G02F1/167 ,  G02F1/1676 ,  G02F1/1677

    Abstract: 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.

    Display device and display method
    4.
    发明授权
    Display device and display method 有权

    公开(公告)号：US10726802B2

    公开(公告)日：2020-07-28

    申请号：US16355020

    申请日：2019-03-15

    Applicant: Japan Display Inc.

    Inventor： Kazunari Tomizawa

    IPC: G09G3/36 ,  G09G3/34

    Abstract: 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.

    DISPLAY DEVICE
    5.
    发明申请
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190304387A1

    公开(公告)日：2019-10-03

    申请号：US16363692

    申请日：2019-03-25

    Applicant: Japan Display Inc.

    Inventor： Kazunari Tomizawa

    IPC: G09G3/36

    Abstract: 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.

    Display apparatus
    6.
    发明授权
    Display apparatus 有权

    公开(公告)号：US10297231B2

    公开(公告)日：2019-05-21

    申请号：US15677326

    申请日：2017-08-15

    Applicant: Japan Display Inc.

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

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

    Abstract: 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.

    Display device
    8.
    发明授权
    Display device 有权

    公开(公告)号：US11682360B2

    公开(公告)日：2023-06-20

    申请号：US17408587

    申请日：2021-08-23

    Applicant: Japan Display Inc.

    Inventor： Kazunari Tomizawa ,  Ayato Kitamura

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

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

    Abstract: 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.

    Display device
    9.
    发明授权
    Display device 有权

    公开(公告)号：US11663959B2

    公开(公告)日：2023-05-30

    申请号：US17727058

    申请日：2022-04-22

    Applicant: Japan Display Inc.

    Inventor： Kazuhiko Sako ,  Kazunari Tomizawa ,  Tsutomu Harada

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

    CPC classification number: G09G3/32 ,  G09G3/2007 ,  G09G3/3258 ,  G09G2320/0271 ,  G09G2340/06 ,  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.

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