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:
Jun. 30, 2020
Filed:
Sep. 18, 2019
Lg Display Co., Ltd., Seoul, KR;
Jung-Jae Kim, Goyang-si, KR;
LG DISPLAY CO., LTD., Seoul, KR;
Abstract
A method of driving an organic light-emitting diode (OLED) display device can include, during an initialization period, supplying a reference voltage (Vref), via a first amplifier, to a gate electrode of a driving thin film transistor (TFT) connected to an OLED element and charging an initialization voltage in a source electrode of the driving TFT; during a sensing period, supplying the reference voltage (Vref), via the first amplifier, to the gate electrode of the driving TFT, and charging the source electrode of the driving TFT from the initialization voltage to a reference sensing voltage based on the reference voltage (Vref) minus a threshold voltage (Vth) of the driving TFT; and during a sampling period, supplying a data voltage (Vdata), via the first amplifier, to the gate electrode of the driving TFT, sensing the reference sensing voltage, via a third amplifier, and supplying the reference sensing voltage, via a second amplifier, to the source electrode of the driving TFT.