The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 17, 2019

Filed:

Aug. 28, 2017
Applicant:

Panasonic Liquid Crystal Display Co., Ltd., Himeji-shi, Hyogo, JP;

Inventors:

Toshikazu Koudo, Hyogo, JP;

Masahiro Ishii, Hyogo, JP;

Katsuhiro Kikuchi, Hyogo, JP;

Ikuko Mori, Hyogo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/1347 (2006.01); G09G 3/36 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13471 (2013.01); G09G 3/3648 (2013.01); G02F 2001/133531 (2013.01); G09G 2300/023 (2013.01);
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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