Patent ID: 7800300

Claim:
An organic electroluminescent device comprising: a first organic light emitting transistor comprising: a substrate; a first source electrode; a first drain electrode facing the first source electrode; a first intermediate layer comprising at least an emission layer formed between the first source electrode and the first drain electrode; and a first gate electrode insulated from the first source electrode, the first drain electrode, and the first intermediate layer, the first gate electrode surrounding the first intermediate layer, and wherein the first gate electrode, the first source electrode, and the first drain electrode are positioned such that either: A) the first gate electrode is nearer the substrate than the first source electrode and the first drain electrode is nearer the substrate than the first gate electrode, or B) the first gate electrode is farther from the substrate than the first source electrode and the first drain electrode is farther from the substrate than the first gate electrode; a second organic light emitting transistor comprising: a second source electrode; a second drain electrode facing the second source electrode; a second intermediate layer comprising at least an emission layer formed between the second source electrode and the second drain electrode; and a second gate electrode insulated from the second source electrode, the second drain electrode, and the second intermediate layer, the second gate electrode surrounding the second intermediate layer and being connected to the first drain electrode, and wherein the second gate electrode, the second source electrode, and the second drain electrode are positioned such that either: A) the second gate electrode is nearer the substrate than the second source electrode and the second drain electrode is nearer the substrate than the second gate electrode, or B) the second gate electrode is farther from the substrate than the second source electrode and the second drain electrode is farther from the substrate than the second gate electrode.