Patent ID: 7791267
Filing Date: 2010-09-07
Classification: H01L

Abstract:
1. An organic light emitting display device comprising: a substrate having a pixel region and a non-pixel region adjacent to the pixel region; a planarization layer formed over the substrate; a pixel definition structure formed over the planarization layer, the pixel definition structure overlying substantially the entire portion of the pixel region, the pixel definition structure including an array of openings over the pixel region of the substrate; a plurality of organic light emitting diodes formed in the openings of the pixel definition structure, at least one of the organic light emitting diodes comprising a first pixel electrode formed over the planarization layer, a second pixel electrode overlying the first pixel electrode, and an organic light emitting layer interposed between the first and second pixel electrodes, the second pixel electrode further comprising a portion extending over the non-pixel region; an elongate recess formed through the planarization layer and the pixel definition structure at or near the junction of the pixel region and the non-pixel region, wherein the portion of the second pixel electrode includes a section that is formed in the elongate recess; a first dummy pattern formed under the section of the portion of the second pixel electrode; a thin film transistor (TFT) formed over the pixel region of the substrate, the TFT being interposed between the planarization layer and the substrate, the TFT comprising source and drain electrodes, wherein the first dummy pattern is formed of the same material as that of the source and drain electrodes; a first insulation layer formed over the substrate, wherein the planarization layer is formed on the first insulation layer, and wherein the first dummy pattern is formed on the first insulation layer; a second insulation layer interposed between the first insulation layer and the substrate; and a second dummy pattern interposed between the first insulation layer and the second insulation layer, the second dummy pattern substantially overlapping with the first dummy pattern.