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    Unevenness evaluation method and unevenness evaluation apparatus
    1.
    发明授权
    Unevenness evaluation method and unevenness evaluation apparatus 有权

    公开(公告)号：US10436637B2

    公开(公告)日：2019-10-08

    申请号：US16096264

    申请日：2017-03-16

    Applicant: IIX INC.

    Inventor： Hiroshi Murase

    IPC: G01J1/44 ,  G01J1/42

    Abstract: Given that a plurality of visual transfer function curves for a display panel are provided for each of different ranges from the display panel, two-dimensional luminance distribution data of the display panel is filtered using a filter having visual frequency characteristics substantially passing through: a part where a recognition sensitivity increases as a spatial frequency increases in a short-range function curve, which among the plurality of visual transfer function curves is the closest to the display panel; a peak part of the short-range function curve; a peak part in a long-range function curve, which among the plurality of visual transfer function curves is the farthest from the display panel; and a part where the recognition sensitivity decreases as the spatial frequency increases in the long-range function curve. An evaluation value of luminance unevenness of the display panel is calculated on the basis of the filtered two-dimensional filtering data.

    Pattern position detection method, pattern position detection system, and image quality adjustment technique using the method and system
    3.
    发明授权
    Pattern position detection method, pattern position detection system, and image quality adjustment technique using the method and system 有权
    图案位置检测方法，图案位置检测系统以及使用该方法和系统的图像质量调整技术

    公开(公告)号：US09277209B2

    公开(公告)日：2016-03-01

    申请号：US14478101

    申请日：2014-09-05

    Applicant: IIX INC.

    Inventor： Hiroshi Murase ,  Masayoshi Imoto

    IPC: H04N17/02 ,  G09G3/00 ,  G09G5/02 ,  G09G3/36

    CPC classification number: H04N17/02 ,  G09G3/006 ,  G09G3/3611 ,  G09G5/02 ,  G09G2320/0233 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2360/145

    Abstract: Provided is a pattern position detection method that allows detecting positions of patterns used for alignment with high accuracy. According to the pattern position detection method of the present invention, patterns are displayed on a liquid crystal panel (2) and captured by a camera (3). A black image is displayed on the liquid crystal panel (2) and captured by the camera (3) using a shutter speed or an f-number used when capturing the patterns. Based on a difference between a captured image of the patterns and a captured image of the black image, positions of images of the patterns on an imaging surface of the camera (3) are detected.

    Abstract translation: 提供了一种允许以高精度检测用于对准的图案的位置的图案位置检测方法。 根据本发明的图案位置检测方法，将图案显示在液晶面板（2）上并由相机（3）捕获。 使用在拍摄图案时使用的快门速度或f数，在液晶面板（2）上显示黑色图像并由相机（3）拍摄。 基于图案的拍摄图像和黑色图像的拍摄图像之间的差异，检测相机（3）的成像表面上的图案的图像的位置。

    Pattern position detection method, pattern position detection system, and image quality adjustment technique using the method and system
    4.
    发明授权
    Pattern position detection method, pattern position detection system, and image quality adjustment technique using the method and system 有权
    图案位置检测方法，图案位置检测系统以及使用该方法和系统的图像质量调整技术

    公开(公告)号：US08866914B2

    公开(公告)日：2014-10-21

    申请号：US13845354

    申请日：2013-03-18

    Applicant: IIX Inc.

    Inventor： Hiroshi Murase ,  Masayoshi Imoto

    IPC: H04N17/00 ,  H04N17/02

    CPC classification number: H04N17/02 ,  G09G3/006 ,  G09G3/3611 ,  G09G5/02 ,  G09G2320/0233 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2360/145

    Abstract: Provided is a pattern position detection method that allows detecting positions of patterns used for alignment with high accuracy. According to the pattern position detection method of the present invention, patterns are displayed on a liquid crystal panel (2) and captured by a camera (3). A black image is displayed on the liquid crystal panel (2) and captured by the camera (3) using a shutter speed or an f-number used when capturing the patterns. Based on a difference between a captured image of the patterns and a captured image of the black image, positions of images of the patterns on an imaging surface of the camera (3) are detected.

    Abstract translation: 提供了一种允许以高精度检测用于对准的图案的位置的图案位置检测方法。 根据本发明的图案位置检测方法，将图案显示在液晶面板（2）上并由相机（3）捕获。 使用在拍摄图案时使用的快门速度或f数，在液晶面板（2）上显示黑色图像并由相机（3）拍摄。 基于图案的拍摄图像和黑色图像的拍摄图像之间的差异，检测相机（3）的成像表面上的图案的图像的位置。

    Panel drive circuit
    5.
    发明授权
    Panel drive circuit 有权

    公开(公告)号：US12148402B2

    公开(公告)日：2024-11-19

    申请号：US18279152

    申请日：2021-03-10

    Applicant: IIX INC.

    Inventor： Makoto Hatakenaka ,  Takashi Sakamoto ,  Mitsuo Hagiwara ,  Norimasa Senda ,  Yoshihide Minegishi ,  Hiroshi Murase

    IPC: G09G3/36

    Abstract: A panel drive circuit having an input interface to which an image signal is input, a gamma correction circuit that corrects an image processing signal generated by an image processing circuit performing image processing on the image signal input to the input interface, such that a gamma correction signal thus generated has predetermined gamma characteristics, an unevenness correction circuit that corrects the gamma correction signal generated through the correction by the gamma correction circuit, based on correction data for reducing unevenness of a display panel, and an D/A convertor that has a variable output voltage range, and performs D/A conversion on an unevenness correction signal generated through the correction by the unevenness correction circuit and outputs the signal thus generated to the display panel, and the unevenness correction circuit changes the correction method according to the output voltage range of the D/A convertor.

    UNEVENNESS EVALUATION METHOD AND UNEVENNESS EVALUATION APPARATUS
    6.
    发明申请
    UNEVENNESS EVALUATION METHOD AND UNEVENNESS EVALUATION APPARATUS 审中-公开

    公开(公告)号：US20190137334A1

    公开(公告)日：2019-05-09

    申请号：US16096264

    申请日：2017-03-16

    Applicant: IIX INC.

    Inventor： Hiroshi Murase

    IPC: G01J1/44

    CPC classification number: G01J1/44 ,  G01J2001/4252 ,  G01M11/00 ,  G09G3/20 ,  G09G3/32 ,  G09G2320/0233 ,  G09G2330/10 ,  G09G2330/12 ,  G09G2360/16

    Abstract: Given that a plurality of visual transfer function curves for a display panel are provided for each of different ranges from the display panel, two-dimensional luminance distribution data of the display panel is filtered using a filter having visual frequency characteristics substantially passing through: a part where a recognition sensitivity increases as a spatial frequency increases in a short-range function curve, which among the plurality of visual transfer function curves is the closest to the display panel; a peak part of the short-range function curve; a peak part in a long-range function curve, which among the plurality of visual transfer function curves is the farthest from the display panel; and a part where the recognition sensitivity decreases as the spatial frequency increases in the long-range function curve. An evaluation value of luminance unevenness of the display panel is calculated on the basis of the filtered two-dimensional filtering data.

    IMAGE QUALITY ADJUSTMENT APPARATUS, CORRECTION DATA GENERATION METHOD, AND IMAGE QUALITY ADJUSTMENT TECHNIQUE USING THE APPARATUS AND METHOD
    9.
    发明申请
    IMAGE QUALITY ADJUSTMENT APPARATUS, CORRECTION DATA GENERATION METHOD, AND IMAGE QUALITY ADJUSTMENT TECHNIQUE USING THE APPARATUS AND METHOD 有权
    图像质量调整装置，校正数据生成方法和使用装置和方法的图像质量调整技术

    公开(公告)号：US20150271409A1

    公开(公告)日：2015-09-24

    申请号：US14430883

    申请日：2013-06-11

    Applicant: IIX INC.

    Inventor： Masayoshi Imoto ,  Hiroshi Murase ,  Shinya Tabata

    IPC: H04N5/232 ,  G09G5/02 ,  H04N5/357 ,  H04N5/341 ,  H04N5/372 ,  H04N17/00 ,  G09G3/00

    CPC classification number: H04N5/23264 ,  G09G3/006 ,  G09G3/20 ,  G09G5/02 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/0693 ,  G09G2360/145 ,  H04N5/341 ,  H04N5/357 ,  H04N5/372 ,  H04N17/004

    Abstract: An image quality adjustment apparatus obtains correction data for correcting display unevenness of a display panel by capturing an image of the display panel using a camera, and includes a moire frequency control unit that performs a control to position the display panel and the camera at a predetermined relative angle with respect to each other, an unevenness measurement unit that measures the display unevenness of the display panel based on the image captured by the camera, and a correction data generation unit that generates the correction data based on the unevenness measured by the unevenness measurement unit. Arranging the panel and the camera at the predetermined relative angle shifts a spatial frequency component of a moire pattern occurring in the image captured by the camera out of a region where a spatial frequency component of the display unevenness is present, and removes an influence of the moire pattern.

    Abstract translation: 图像质量调节装置通过使用照相机拍摄显示面板的图像来获得用于校正显示面板的显示不均的校正数据，并且包括：莫尔频率控制单元，其进行将显示面板和相机定位在预定位置的控制 相对于彼此相对的角度;不平度测量单元，其基于由照相机拍摄的图像来测量显示面板的显示不均匀;以及校正数据生成单元，其基于由不平坦度测量得到的不均匀性生成校正数据 单元。 将面板和相机以预定的相对角度排列将存在于由显示不均匀的空间频率分量的区域中的摄像机拍摄的图像中出现的莫尔图案的空间频率分量移位，并且消除 莫尔图案

    Unevenness correction data generation device
    10.
    发明授权
    Unevenness correction data generation device 有权

    公开(公告)号：US12159605B2

    公开(公告)日：2024-12-03

    申请号：US18271594

    申请日：2021-02-04

    Applicant: IIX INC.

    Inventor： Makoto Hatakenaka ,  Takashi Sakamoto ,  Hiroshi Murase ,  Mitsuo Hagiwara ,  Hideaki Suzuki ,  Kazunori Yoshizawa

    IPC: G09G5/10 ,  G09G5/02

    Abstract: An unevenness correction data generation device suppressing the appearance of color unevenness when turning on R, G and B together includes a pattern generation unit causing red, green and blue images, in which display panel subpixels are turned on at the same gray level, to be displayed, a monochrome camera, a control unit generating first red, green and blue luminance correction data based on shooting data of the monochrome camera, a pattern generation unit causing the display panel to display a white image by causing red, green and blue images corrected with the respective luminance correction data to be displayed simultaneously, a color camera shooting the white image in color, and a control unit generating color correction data for correcting color unevenness based on shooting data of the color camera and generates unevenness correction data based on the red, green and blue luminance correction data and the color correction data.

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