1. Field of the Invention
The present invention relates to an organic light emitting display, and more particularly to packaging of an organic light emitting display.
2. Description of the Related Technology
In recent years, organic light emitting display using organic light emitting diode has been watched. The organic light emitting display is an emissive display, which electrically excites organic compound having fluorescent characteristic to emit light. The organic light emitting display can be driven with a low voltage, has excellent light-emission, a wide viewing angle, and a high-speed response.
The organic light emitting display includes a plurality of pixels formed on a substrate. Each of the pixels includes an organic light emitting diode and a thin film transistor (TFT) for driving the organic light emitting diode. Since such an organic light emitting diode is susceptible to oxygen and moisture, a sealing structure has been proposed to prevent the oxygen and moisture from entering by covering a deposition substrate with a metal cap having absorbent or a sealing glass substrate.