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：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：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.