Organic light emitting display device and method of fabricating the same
AssigneeSamsung SDI Co., Ltd.
InventorTae-Wook Kang
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Abstract
An organic light emitting display device and a method of fabricating the same. A dummy pattern is formed in an emission region to increase the step height of the emission region by an electrode material while a thin film transistor is fabricated, so that a distance between a pixel electrode and a donor film is decreased during fabrication of an organic layer. This reduced distance reduces laser energy for transfer using laser-induced thermal imaging, thus improving life span and efficiency of the device. Further, the pixel electrode can extend into a thin film transistor region and a capacitor region, thus enhancing an aperture ratio.
Claims14
An organic light emitting display device, comprising:
- an emission region including a pixel electrode, an organic layer that includes at least an emission layer, and an opposite electrode on a substrate, the emission region being defined by a pixel defining layer, a dummy pattern being arranged in the emission region under the pixel electrode;
- a thin film transistor region including a gate electrode and source and drain electrodes;
- and
- a capacitor region including a lower electrode and an upper electrode, the dummy pattern being adapted to increase a step height of the emission region.
An organic light emitting display (OLED) device, comprising:
- an emission region including a pixel electrode, an organic layer that includes at least an emission layer, and an opposite electrode on a substrate, the emission region being defined by a pixel defining layer, a height between a top surface of the pixel defining layer and a top surface of the pixel electrode being no more than 300 nm, a dummy pattern being arranged in the emission region under the pixel electrode;
- a thin film transistor region including a gate electrode and source and drain electrodes;
- and
- a capacitor region including a lower electrode and an upper electrode.
Dependencies are inferred from the claim text.