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:
Jun. 30, 2020

Filed:

Nov. 18, 2016
Applicant:

Nec Display Solutions, Ltd., Tokyo, JP;

Inventor:

Katsuyuki Matsui, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/34 (2006.01); H05B 47/10 (2020.01); G09G 3/36 (2006.01); G02F 1/133 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3648 (2013.01); G02F 1/133 (2013.01); G09G 3/34 (2013.01); G09G 3/36 (2013.01); H05B 47/10 (2020.01); G09G 2320/0233 (2013.01); G09G 2320/043 (2013.01); Y02B 20/42 (2013.01);
Abstract

A luminance adjustment device is configured to adjust the luminance of a light source of a display by controlling a drive value of the light source of the display. The luminance adjustment device is configured to calculate the luminance corresponding to the used time of the light source according to a predetermined luminance characteristic, to calculate the drive value according to the luminance, to correct and add up the used time of the light source using a cubic value of the drive value, to correct the luminance according to the predetermined luminance characteristic based on a total used time, and to thereby correct the drive value.


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