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.
Patent No.:
Date of Patent:
Jul. 04, 2017
Filed:
Mar. 28, 2016
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Inventors:
Mitsuaki Osame, Kanagawa, JP;
Aya Anzai, Kanagawa, JP;
Yu Yamazaki, Tokyo, JP;
Ryota Fukumoto, Kanagawa, JP;
Assignee:
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G 3/32 (2016.01); H04M 1/02 (2006.01); G09G 3/20 (2006.01); H01L 27/12 (2006.01); H01L 27/32 (2006.01); G09G 3/3233 (2016.01); G09G 3/3291 (2016.01); H01L 51/52 (2006.01); H01L 29/786 (2006.01);
U.S. Cl.
CPC ...
H01L 27/3262 (2013.01); G09G 3/3233 (2013.01); G09G 3/3291 (2013.01); H01L 27/124 (2013.01); H01L 27/1255 (2013.01); H01L 27/3248 (2013.01); H01L 27/3276 (2013.01); H01L 51/52 (2013.01); H04M 1/0266 (2013.01); G09G 3/2022 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0842 (2013.01); G09G 2300/0861 (2013.01); G09G 2310/0251 (2013.01); G09G 2320/0219 (2013.01); G09G 2320/0233 (2013.01); H01L 27/12 (2013.01); H01L 27/1214 (2013.01); H01L 27/1222 (2013.01); H01L 27/1251 (2013.01); H01L 27/3244 (2013.01); H01L 27/3246 (2013.01); H01L 29/78675 (2013.01); H01L 2251/5323 (2013.01);
Abstract
A potential of a gate of a driving transistor is fixed, and the driving transistor is operated in a saturation region, so that a current is supplied thereto anytime. A current control transistor operating in a linear region is disposed serially with the driving transistor, and a video signal for transmitting a signal of emission or non-emission of the pixel is input to a gate of the current control transistor via a switching transistor.