Patent ID: 7482622
Filing Date: 2009-01-27
Classification: H01L

Abstract:
1. An organic electroluminescent device, comprising: first and second substrates facing each other and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line and a power line crossing the gate line and spaced apart from each other, wherein the power line includes a power electrode; a switching thin film transistor connected to the gate line and the data line; a driving thin film transistor connected to the switching thin film transistor and the power line, the driving thin film transistor including a channel region having a ring shape, wherein the driving thin film transistor comprises: a passivation layer formed on the switching thin film transistor and the driving thin film transistor, the passivation layer includes a contact hole to expose a portion of the driving source electrode; an electric pattern including a protrusive pattern extending from the first substrate to the second substrate and a connection electrode wrapping the protrusive pattern, the electric connection pattern connected to the driving thin film transistor and being disposed over the driving thin film transistor, wherein the electric connection pattern is disposed within the central portion of the ring shape of the driving gate electrode; and an organic electroluminescent diode on an inner surface of the second substrate, the organic electroluminescent diode being connected to the electric connection pattern, wherein the power electrode is formed on the passivation layer and connected to the driving source electrode through the contact hole.