Organic light emitting display panel, organic light emitting display device and short circuit detection method

Abstract

An organic light emitting display panel, an organic light emitting display device and a short circuit detection method are disclosed. The organic light emitting display device can include data lines;scan lines; subpixels; a data driver; and a scan driver, wherein each of the subpixels includes: an organic light emitting diode; a driving transistor connected to the organic light emitting diode; afirst transistor controlled by a first scan signal applied to a first gate node and connected between the driving transistor and a data line; a second transistor controlled by a second scan signal applied to a second gate node and connected between the driving transistor and a reference voltage line; a third transistor controlled by a data voltage applied to a third gate node and connected betweenthe second gate node of the second transistor and the second scan line; and a storage capacitor connected between the first node and the second node of the driving transistor.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2016-0112176 filed on Aug. 31, 2016, which is incorporated herein by reference for all purposes as if fully set forth herein. technical field [0003] The invention relates to an organic light emitting display panel, an organic light emitting display device and a driving method thereof. Background technique [0004] Organic light emitting display devices, which have recently drawn attention as display devices, use self-luminous organic light emitting diodes OLEDs, and thus have advantages of high response speed as well as improved luminous efficiency, luminance, and wider viewing angles. [0005] In an organic light emitting display device, subpixels including OLEDs are arranged in a matrix, and luminance of subpixels selected in response to scan signals is controlled according to grayscales of data. [0006] In addition, the OLED includes an anode...

AI Technical Summary

Problems solved by technology

[0006] In addition, an OLED includes an anode electrode and a cathode electrode, and the anode electrode and the cathode electrode may become short-circuited by foreign matter generated during the manufacturing process, moisture penetration, or shock generated after shipment

[0007] Such a short circuit of the OLED may reduce the image quality, or may cause the panel to burn out in severe cases

[0008] However, organic light-emitting display panels cannot accurately detect short circuits in OLEDs due to the structural characteristics of sub-pixels.

Images