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. 29, 2019
Filed:
Dec. 12, 2017
Lg Display Co., Ltd., Seoul, KR;
Jung-Jae Kim, Goyang-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
An organic light-emitting diode (OLED) display device can include a pixel and a data driver. The pixel includes a driving thin film transistor (TFT) to drive an OLED element, a first switching TFT to connect a data line to a gate electrode of the driving TFT, a second switching TFT to connect a reference line to a source electrode of the driving TFT and a capacitor connected between the gate electrode and the source electrode of the driving TFT. The data driver includes a first amplifier to drive the data line with a reference voltage or a data voltage, a second amplifier to drive the reference line with an initialization voltage, and a third amplifier to sense a voltage of the reference line and supply a reference sensing voltage to the second amplifier, in which the reference line voltage is based on a threshold voltage of the driving TFT.