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公开(公告)号：US20210166646A1
公开(公告)日：2021-06-03
申请号：US17170297
申请日：2021-02-08
Inventor： Toshikazu KOUDO , Tetsuo FUKAMI
IPC: G09G3/36 , G02F1/1368 , G02F1/1347 , G02F1/1335 , G02F1/133 , G02F1/1362
Abstract: A display device includes a first display panel disposed closer to an observer and a second display panel disposed farther from the observer than the first display panel. An image display region of the second display panel is larger than an image display region of the first display panel.
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公开(公告)号：US20200175946A1
公开(公告)日：2020-06-04
申请号：US16694363
申请日：2019-11-25
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Hideyuki NAKANISHI , Toshikazu KOUDO , Katsuhiro KIKUCHI
Abstract: A display device according to present disclosure comprising: a first display panel that displays a first image; a second display panel disposed on a back surface side of the first display panel to display a second image; and an image processor that acquires input image data and generates first image data corresponding to the first image and second image data corresponding to the second image based on the input image data, wherein the image processor includes a first filter circuit that performs first low-pass filter processing on the input image data, and the first filter circuit reduces a degree of the first low-pass filter processing when input gradation of the input image data is less than first gradation as compared with a case that the input gradation is greater than or equal to the first gradation.
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公开(公告)号：US20180342218A1
公开(公告)日：2018-11-29
申请号：US16050874
申请日：2018-07-31
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Yoshihisa OOISHI , Genshiro KAWACHI , Kazuo KITA , Toshikazu KOUDO , Hideyuki NAKANISHI
IPC: G09G3/36
CPC classification number: G09G3/3648 , G09G3/3677 , G09G2310/0218 , G09G2310/0281 , G09G2310/0297 , G09G2310/067 , G09G2310/08
Abstract: A display apparatus includes an image display region having pixels sectioned by scanning signal lines and video signal lines, scanning connecting lines, thin film transistors, selection signal lines connected to gate electrodes of the thin film transistors, plural ones of the thin film transistors connected to different ones of the scanning connecting lines being connected to one of the selection signal lines; and a scanning signal drive circuit. The scanning signal drive circuit performs a normal scanning mode in which pulse signals are supplied in turn to plural ones of the scanning connecting lines connected to the one of the selection signal lines, and in the normal scanning mode, a fall timing of the gate-on voltage differs from a fall timing of a last one of the pulse signals supplied to the plural ones of the scanning connecting lines during the selection period.
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公开(公告)号：US20180286325A1
公开(公告)日：2018-10-04
申请号：US15900376
申请日：2018-02-20
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Toshikazu KOUDO , Hideyuki NAKANISHI , Katsuhiro KIKUCHI
CPC classification number: G09G3/36 , G06T5/002 , G06T5/20 , G09G3/3607 , G09G3/3688 , G09G2300/023 , G09G2320/0276 , G09G2360/04 , G09G2360/16
Abstract: A liquid crystal display device includes: a first display panel displaying a first image; a second display panel displaying a second image; and an image processor generating first and second image data based on input video signal. The image processor includes a first differential filtering processor, a multiplier that multiplies a grayscale of the image data subjected to the differential filtering by the first differential filtering processor by a correction coefficient, and a first smoothing processor that performs smoothing processing on image data obtained by adding the image data multiplied by the correction coefficient and the image data based on the input video signal. The image processor generates the first image data based on the image data based on the input video signal and the image data subjected to the smoothing processing, and generates the second image data based on the image data subjected to the smoothing processing.
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公开(公告)号：US20210256924A1
公开(公告)日：2021-08-19
申请号：US16790261
申请日：2020-02-13
Inventor： Hideyuki NAKANISHI , Toshikazu KOUDO , Katsuhiro KIKUCHI
Abstract: A liquid crystal display device having a plurality of display panels disposed in a superposed manner, comprising: a first display panel that displays a first image; a second display panel disposed on a back surface side of the first display panel to display a second image; and an image processor that generates first image data for the first image and second image data for the second image based on the input image data, wherein the image processor includes: a differential filter that performs differential filter processing on a luminance signal calculated from the input image data and outputs a differential detection value; a background level detection circuit that detects a background level using the luminance signal; a gain determination circuit that determines a filter gain using the differential detection value and the background level; and a low-pass filter that performs low-pass filter processing using the filter gain.
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Patent Agency Ranking
公开(公告)号：US20200226968A1
公开(公告)日：2020-07-16
申请号：US16837744
申请日：2020-04-01
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Toshikazu KOUDO , Masahiro ISHII , Katsuhiro KIKUCHI , Ikuko MORI
Abstract: A liquid crystal display device comprises: a first display panel displaying a color image; a second display panel displaying a monochrome image; and an image processor generating first image data corresponding to the color image and second image data corresponding to the monochrome image based on an input video signal. The image processor generates the first image data and the second image data such that a graph representing transmittance of the first display panel for input gradation corresponding to the input video signal and a graph representing transmittance of the second display panel for the input gradation corresponding to the input video signal intersect each other at predetermined input gradation.
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公开(公告)号：US20180286339A1
公开(公告)日：2018-10-04
申请号：US15475178
申请日：2017-03-31
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Toshikazu KOUDO , Katsuji TANAKA , Makoto ARITA , Kazusa MIYAJI , Ikuko MORI
IPC: G09G3/36
CPC classification number: G09G3/3677 , G09G3/2096 , G09G3/3648 , G09G3/3688 , G09G2300/023 , G09G2300/0452 , G09G2310/0232 , G09G2310/08 , G09G2340/0464
Abstract: A display device includes a primary display area which comprises a first display area and a second display area which is unique from the first display area, a control unit configured to display an image in the primary display area, an image signal generating unit configured to generate display data based on externally input image data for a single image. The image signal generating unit comprises a memory which stores display-position information indicating a display location of a first image displayed in the primary display area. The display data comprises first and second display data to be displayed in the first display area and the second display area, respectively. The first display data is generated based on the externally input single image data and the display-position information. The control unit is configured to cause a first image to be displayed in the first display area based on the first display data.
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公开(公告)号：US20180059465A1
公开(公告)日：2018-03-01
申请号：US15688376
申请日：2017-08-28
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Toshikazu KOUDO , Masahiro ISHII , Katsuhiro KIKUCHI , Ikuko MORI
IPC: G02F1/1347 , G09G3/36
CPC classification number: G02F1/13471 , G02F2001/133531 , G09G3/3648 , G09G2300/023
Abstract: A liquid crystal display device includes: a first display panel displaying a color image; a second display panel that is disposed farther away from the observer with respect to the first display panel and displays a monochrome image; and an image processor that generates color image data and monochrome image data. The image processor includes an extension filtering unit that performs extension filtering on first monochrome image data, which is made monochrome using a maximum value in a value of each color expressing color information included in the input video signal. The extension filtering unit performs the extension filtering on the first monochrome image data using a large filter size in a larger luminance difference region, and performs the extension filtering on the first monochrome image data using a small filter size in a small luminance difference region.
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公开(公告)号：US20190066609A1
公开(公告)日：2019-02-28
申请号：US16116510
申请日：2018-08-29
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Satoshi HIROTSUNE , Toshikazu KOUDO
CPC classification number: G09G3/3607 , G06F3/1446 , G09G3/2007 , G09G3/3648 , G09G2300/023 , G09G2320/0271 , G09G2360/16
Abstract: A liquid crystal display device comprises a first and second display panels that display a first image and a second image, respectively based on input image data of m bits, and are both driven by n bits, where n
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公开(公告)号：US20190004657A1
公开(公告)日：2019-01-03
申请号：US16126687
申请日：2018-09-10
Applicant: Panasonic Liquid Crystal Display Co., Ltd.
Inventor： Toshikazu KOUDO , Ken SHIIBA
Abstract: A touch panel comprising first electrodes that extend in a first direction and second electrodes that extend in the second direction, wherein each of the first electrodes and each of the second electrodes are constructed with conductive wires having mesh shape, each of the first electrodes is formed such that wide portions and narrow portions, each of the narrow portions having a width that is a length in the second direction narrower than each of the wide portions, are alternately arranged in the first direction, and one wide portion and one narrow portion in an endmost first electrode formed at an end are narrower than one wide portion and one narrow portion in an inner first electrode located inside the endmost first electrode, respectively.
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