公开(公告)号：US20230395038A1

公开(公告)日：2023-12-07

申请号：US18028370

申请日：2021-02-25

Applicant: IIX INC.

Inventor： Makoto HATAKENAKA ,  Takashi SAKAMOTO ,  Yoshihide MINEGISHI ,  Ryohei HATTA ,  Norimasa SENDA

IPC: G09G5/04

CPC classification number: G09G5/04 ,  G09G2300/0452 ,  G09G2330/08 ,  G09G2330/10

Abstract: An input signal correction device for reducing power consumption is compatible with a variety of display panels, and includes an input circuit, extension/degeneration circuit, separation/recovery circuit and delay adjustment circuit operating at frequency f, demura circuit operating at frequency f/2, and adder circuit. The extension/degeneration circuit outputs a preprocessing signal increasing the input signal cycle length by 2 or outputs by degenerating the input signal to ½, based on a control signal, the demura circuit outputs a correction signal correcting the preprocessing signal from the extension/degeneration circuit, the separation/recovery circuit outputs a differential signal reducing the correction signal cycle length to ½ or reduces cycle length to ½ and outputs the same differential signal over two cycles, based on a control signal, the delay adjustment circuit outputs a delay signal delaying the input signal, and the adder circuit outputs a signal adding the differential signal to the delay signal.

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：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.

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。

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.

公开(公告)号：US10970825B2

公开(公告)日：2021-04-06

申请号：US16484265

申请日：2017-02-09

Applicant: IIX INC.

Inventor： Hiroshi Murase

IPC: G06T5/00 ,  G06T5/30 ,  G06T5/50

Abstract: An image processing method includes capturing a display image of a display panel in-focus with a camera; generating a first image by applying a high-pass filter to the captured image to remove or reduce a spatial frequency component corresponding to moiré that has appeared in the captured image; capturing the display image out-of-focus with the camera; generating a second image by applying a correction filter to the captured image to correct attenuation of the spatial frequency component of the captured image with the correction filter, and applying a low-pass filter to the corrected captured image; and generating a third image in which the moiré has been removed or reduced by compositing the first image and the second image. The sum of the transmittance of the high-pass filter and the transmittance of the low-pass filter is a constant value at any spatial frequency.

公开(公告)号：US10803782B2

公开(公告)日：2020-10-13

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：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：US20200005437A1

公开(公告)日：2020-01-02

申请号：US16484265

申请日：2017-02-09

Applicant: IIX INC.

Inventor： Hiroshi Murase

IPC: G06T5/00 ,  G06T5/30 ,  G06T5/50

Abstract: An image processing method includes capturing a display image of a display panel in-focus with a camera; generating a first image by applying a high-pass filter to the captured image to remove or reduce a spatial frequency component corresponding to moiré that has appeared in the captured image; capturing the display image out-of-focus with the camera; generating a second image by applying a correction filter to the captured image to correct attenuation of the spatial frequency component of the captured image with the correction filter, and applying a low-pass filter to the corrected captured image; and generating a third image in which the moiré has been removed or reduced by compositing the first image and the second image. The sum of the transmittance of the high-pass filter and the transmittance of the low-pass filter is a constant value at any spatial frequency.