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. 19, 2017

Filed:

Dec. 14, 2015
Applicant:

Samsung Display Co., Ltd., Yongin-Si, Gyeonggi-Do, KR;

Inventors:

Sanghyun Lee, Incheon, KR;

Geunhyuk Choi, Suncheon-si, KR;

Hyejung Hong, Cheonan-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01); G09G 3/34 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3406 (2013.01); G09G 3/3648 (2013.01); H05B 33/086 (2013.01); G09G 2320/062 (2013.01); G09G 2320/064 (2013.01);
Abstract

A backlight unit of a display apparatus includes a power converter generating a light source power voltage in response to a power control signal, a first node, a second node, a light emitting element connected between the first node and the second node, and a controller connected to the second node. The light emitting element is configured to receive the light source power voltage through the first node, and the controller is configured to output the power control signal for controlling current flowing through the light emitting element in response to a dimming signal. When the dimming signal has a first level, the controller outputs the power control signal to turn off the power converter.


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