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:
Oct. 18, 2005
Filed:
Jun. 24, 2002
Sung-joon Bae, Kyungki-Do, KR;
Han-sang Lee, Kyungki-Do, KR;
Myung-ho Lee, Kyungki-Do, KR;
Joon-kyu Park, Seoul, KR;
Sung-Joon Bae, Kyungki-Do, KR;
Han-Sang Lee, Kyungki-Do, KR;
Myung-Ho Lee, Kyungki-Do, KR;
Joon-Kyu Park, Seoul, KR;
LG.Philips LCD Co., Ltd., Seoul, KR;
Abstract
A driving circuit in an organic electroluminescent device includes a gate driver unit for sequentially outputting a control signal to select gate lines in a luminescent array unit and a current driver unit for supplying picture data to a data lines in the luminescent array unit corresponding to the gate lines selected by the gate driver unit and selectively driving organic electroluminescent devices of the selected line. The driving circuit includes a minimum gray level judgment unit for determining whether the picture data is of a predetermined minimum gray level; and a switching unit for receiving a control signal according to the determination made by the minimum gray level judgment unit and for selectively supplying a reference voltage or a reference current to the selectively driven organic electroluminescent devices.