Organic light emitting display device

Abstract

An organic light emitting display device includes: a display panel in which a plurality of pixels are disposed, each pixel including: an organic light emitting diode emitting light by a driving current; a first transistor that controls the driving current and includes a source as a first node, a gate as a second node, and a drain as a third node; a second transistor that applies a data voltage to the first node; a third transistor forming a diode connection between the second and third nodes; a fourth transistor that applies an initialization voltage to the first transistor; a fifth transistor that applies a high-potential driving voltage to the first node; a sixth transistor forming a current path between the driving transistor and the organic light emitting diode; a seventh transistor that applies a reset voltage to a fourth node that is an anode of the organic light emitting diode; and a storage capacitor including one electrode connected to the second node and another electrode connected to a high-potential driving voltage line transmitting the high-potential driving voltage.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to Korean Patent Application No. 10-2020-0178859 filed in the Korean Intellectual Property Office on December 18, 2020, the disclosure of which is incorporated herein by reference. technical field [0003] The present invention relates to an organic light-emitting display device, and more particularly, to an organic light-emitting display device with a variable driving frequency. Background technique [0004] An organic light emitting diode (OLED), which is a self-luminous device, includes an anode, a cathode, and an organic compound layer formed between the anode and the cathode. The organic compound layer includes at least a hole transport layer (HTL), an emission layer (EML), and an electron transport layer (ETL). When a driving voltage is applied to the anode and the cathode, holes passing through the hole transport layer HTL and electrons passing through the electron transport laye...

AI Technical Summary

Problems solved by technology

Therefore, the organic light emitting display device includes a separate stage in the gate driver for applying turn-on bias stress to the driving transistor, thereby having problems of increased bezel and increased driving power consumption.

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