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:
May. 24, 2016

Filed:

Dec. 02, 2013
Applicant:

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

Inventors:

Daisuke Kawae, Yokohama, JP;

Ryo Ishii, Yokohama, JP;

Assignee:

SAMSUNG DISPLAY CO., LTD., Yongin, Gyeonggi-do, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01); G09G 3/20 (2006.01);
U.S. Cl.
CPC ...
G09G 3/3225 (2013.01); G09G 3/2022 (2013.01); G09G 3/325 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0871 (2013.01); G09G 2300/0876 (2013.01); G09G 2320/0238 (2013.01); G09G 2320/045 (2013.01);
Abstract

A display device includes a light emitting diode that emits a light in response to a current supplied thereto, a constant current circuit that includes a first transistor to control an amount of the current supplied to the light emitting diode, and a pixel circuit that includes a switching circuit including a second transistor to switch the supply of the current to the light emitting diode and a capacitor including a first terminal connected to a gate terminal of the second transistor and a second terminal connected to a signal line that changes a voltage of the other terminal. The first transistor and the second transistor are connected between a first power supply line and an anode of the light emitting diode including a cathode connected to a second power supply line in series.


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