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. 16, 2011
Filed:
Mar. 29, 2007
Shingo Kawashima, Ulsan, KR;
Shingo Kawashima, Ulsan, KR;
Samsung Mobile Display Co., Ltd., Yongin-city, KR;
Abstract
An organic light emitting display includes column lines for receiving a drive current, each column line belonging to one of groups. Row lines are for receiving a scan signal. Organic light emitting diodes of pixels are at crossings of the row and column lines. A data driver includes a common current source and drive switching elements. The common current source is for applying the drive current to the column lines in one group. The drive switching elements are connected to the common current source and are for applying the drive current to the column lines in said one group within a drive period in which the scan signal is applied. Charge switches connected to the column lines are turned-on before the drive current is applied to the column lines, and turned-off during the drive period. A voltage retaining circuit coupled with the charge switches is for preliminarily charging the pixels.