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:
Aug. 19, 2014
Filed:
Mar. 17, 2010
Takahiro Senda, Osaka, JP;
Takahiro Senda, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An erasing TFTis provided between a gate terminal of a driving TFTand a control line Ei, and a gate terminal of the erasing TFTis connected to the control line Ei. When performing data erase, a potential not lower than a sum of a potential of a power supply line Vp and a threshold voltage of the erasing TFTis applied to the control line Ei before performing data write, and an organic EL elementis controlled to be in a non-light-emitting state. A high level potential applied to a control line Wi is a potential at which a writing TFTis maintained in an OFF state when a potential applied to a data line Sj is a high level potential corresponding to the non-light-emitting state. Accordingly, it is possible to prevent electrooptic elements from emitting light unnecessarily along with changes of potentials of the control lines without increasing the number of power supply or wiring.