公开(公告)号：US20240135894A1

公开(公告)日：2024-04-25

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

CPC classification number: G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2360/16

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.

公开(公告)号：US20200184883A1

公开(公告)日：2020-06-11

申请号：US16618623

申请日：2017-05-31

Applicant: IIX INC.

Inventor： Hiroshi MURASE ,  Takashi SAKAMOTO ,  Makoto HATAKENAKA

IPC: G09G3/3208

Abstract: An unevenness correction data generation device capable of preventing capturing of a black band caused by rewriting a display image when capturing an image of a display panel in order to generate unevenness correction data for the display panel. The device includes a pattern generation device configured to output an image signal and a synchronization signal to an organic EL panel; a camera configured to capture a display image of the organic EL panel to which the image signal was input; and an image quality adjustment device configured, based on the results of image capturing by the camera, to generate unevenness correction data for correcting unevenness of the organic EL panel. The camera captures the display image by opening a shutter from one vertical blanking period to another vertical blanking period of the display image, based on the synchronization signal from the pattern generation device.

公开(公告)号：US20240233669A9

公开(公告)日：2024-07-11

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

CPC classification number: G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0673 ,  G09G2360/16

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.

公开(公告)号：US20140118558A1

公开(公告)日：2014-05-01

申请号：US14059644

申请日：2013-10-22

Applicant: IIX INC.

Inventor： Masayoshi IMOTO ,  Hiroshi MURASE

IPC: H04N17/00

CPC classification number: H04N17/00 ,  G09G3/006 ,  G09G3/3208 ,  G09G2320/0233 ,  G09G2360/147

Abstract: Provided is an image quality adjustment apparatus that can measure display unevenness for each pixel with higher accuracy than in the conventional art. An image quality adjustment system includes an image quality adjustment apparatus that generates correction data corresponding to a display panel, a test pattern generation device that causes the display panel to display a test pattern image, and a ROM writer. The image quality adjustment apparatus measures unevenness based on images of a display state of the display panel that are captured using cameras, and generates correction data for correcting the display unevenness that occurs due to manufacturing variations of the display panel. A feature of the present invention is that the image quality adjustment apparatus includes a plurality of cameras, and an image of a single display panel is captured using the plurality of cameras to obtain unevenness data of the display panel.

Abstract translation: 提供了一种图像质量调节装置，其能够比现有技术更高精度地测量每个像素的显示不均匀性。 图像质量调整系统包括产生与显示面板对应的校正数据的图像质量调整装置，使显示面板显示测试图案图像的测试图案生成装置和ROM写入器。 图像质量调整装置基于使用照相机拍摄的显示面板的显示状态的图像来测量不均匀性，并且生成用于校正由于显示面板的制造变化而发生的显示不均匀的校正数据。 本发明的特征在于，图像质量调整装置包括多个摄像机，并且使用多个摄像机捕获单个显示面板的图像，以获得显示面板的不均匀性数据。

公开(公告)号：US20240071337A1

公开(公告)日：2024-02-29

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

CPC classification number: G09G5/10 ,  G09G5/02 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2320/0666

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.

公开(公告)号：US20140375824A1

公开(公告)日：2014-12-25

申请号：US14478101

申请日：2014-09-05

Applicant: IIX INC.

Inventor： Hiroshi MURASE ,  Masayoshi IMOTO

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

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.

公开(公告)号：US20140232880A1

公开(公告)日：2014-08-21

申请号：US13845354

申请日：2013-03-18

Applicant: IIX INC.

Inventor： Hiroshi MURASE ,  Masayoshi IMOTO

IPC: 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。

公开(公告)号：US20200175907A1

公开(公告)日：2020-06-04

申请号：US16700052

申请日：2019-12-02

Applicant: IIX INC. ,  PHOTOLAB INC.

Inventor： Hiroshi MURASE

IPC: G09G3/20

Abstract: An unevenness correction data generation method provided for generating unevenness correction data for effectively improving the yield of a display panel. The method includes: a step of capturing an image of a display panel where a predetermined pattern is displayed; a step of generating iteration data for correcting unevenness of the captured image; a step of storing the iteration data in a storage means; a step of capturing an image of the display panel where a pattern in the storage means is displayed; a step of generating iteration data for correcting unevenness of the captured image; a step of storing iteration data in the storage means; a step of judging whether or not an ending condition for ending repetition of the steps is satisfied; and a step of generating the unevenness correction data based on the iteration data stored in the storage means the ending condition is satisfied.

公开(公告)号：US20140300756A1

公开(公告)日：2014-10-09

申请号：US14309225

申请日：2014-06-19

Applicant: IIX INC.

Inventor： Hiroshi MURASE

IPC: H04N17/00

CPC classification number: H04N17/00 ,  G01J3/506 ,  G02F1/1309 ,  G09G3/006 ,  G09G2300/0452 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0693 ,  H01L2924/0002 ,  H04N9/3182 ,  H04N9/3194 ,  H01L2924/00

Abstract: Provided is a luminance measurement method for accurately measuring luminance of each pixel even if pixel images of a display panel overlap each other on an imaging surface of a camera. A central exposure factor indicating luminance of the central part of the pixel image is calculated on the basis of an output of a picture element corresponding to the central part. A peripheral exposure factor indicating luminance of the peripheral part of the pixel image is calculated on the basis of an output of picture elements corresponding to the peripheral part of the pixel image is calculated, all pixels of the display panel are sorted into a plurality of groups, sequentially turned on one group after another, and imaged by the camera, and the luminance of all the pixels of the display panel is calculated based on this imaged image, the central exposure factor, and the peripheral exposure factor.

Abstract translation: 提供了即使在相机的成像表面上显示面板的像素彼此重叠的情况下，也可以精确地测量每个像素的亮度的亮度测量方法。 基于对应于中央部分的像素的输出来计算指示像素图像的中心部分的亮度的中心曝光因子。 基于计算与像素图像的周边部分对应的像素的输出，计算出表示像素图像的周边部分的亮度的周边曝光因子，将显示面板的所有像素分类为多个组 依次依次打开一组，并通过照相机成像，并且基于该成像图像，中心曝光因子和外围曝光因子计算显示面板的所有像素的亮度。

公开(公告)号：US20140232625A1

公开(公告)日：2014-08-21

申请号：US13833966

申请日：2013-03-15

Applicant: IIX INC.

Inventor： Hiroshi MURASE ,  Masayoshi IMOTO

IPC: G09G3/36

CPC classification number: G09G3/2003 ,  G09G3/3611 ,  G09G2320/0233 ,  G09G2320/0693 ,  G09G2360/145

Abstract: Provided is a correction data generation method that can generate highly accurate correction data while suppressing the influence of photon shot noise. According to the correction data generation method of the present invention, test patterns are displayed on a liquid crystal panel (2) in units of specific gradation values, the displayed test patterns are captured by a camera (3) a plurality of times for each specific gradation value, and a summed image is generated for each specific gradation value by summing a plurality of captured images of the test patterns. Based on the summed image for each specific gradation value, correction data is generated for reducing unevenness in display of the liquid crystal panel (2) through correction of a signal input to the liquid crystal panel (2).

Abstract translation: 提供了一种校正数据生成方法，其可以抑制光子散射噪声的影响而产生高精度的校正数据。 根据本发明的校正数据生成方法，以特定灰度值为单位在液晶面板（2）上显示测试图案，通过照相机（3）针对每个具体的等级值多次拍摄所显示的测试图案 通过对测试图案的多个捕获图像进行求和来为每个特定灰度值生成灰度值和相加图像。 基于每个特定灰度值的相加图像，通过校正输入到液晶面板（2）的信号，生成用于减少液晶面板（2）的显示不均匀性的校正数据。