Patent ID: 8587194

Claim:
An organic electroluminescent display (OELD) device, comprising: a first substrate having a first unit pixel region including a first pixel region and a second pixel region; first and second gate lines along a first direction and on the first substrate; first and second data lines along a second direction, which is perpendicular to the first direction, and crossing the first and second gate lines to define the first pixel region; a power line parallel to one of the first and second directions; a switching thin film transistor (TFT) in the first pixel region and connected to the first gate line and the first data line; a driving TFT in the first pixel region and connected to the switching TFT and the power line; a passivation layer on the switching and driving TFTs and including a first contact hole exposing a portion of the driving TFT; a first electrode in a portion of the first pixel region and an entire surface of the second pixel region, and contacting the driving TFT through the first contact hole; a bank surrounding the second pixel region and corresponding the first contact hole; an organic emitting layer in the second pixel region and on the first electrode; and a transparent second electrode on the organic emitting layer and the bank, wherein the second pixel region is a region shifted from the first pixel region such that the second gate line goes across the second pixel region, and the first substrate further has a second unit pixel region disposed at an upper side direction of the first unit pixel region, a third unit pixel region at a horizontal side of the first unit pixel region and a fourth unit pixel region at a diagonal side of the first unit pixel region, and wherein the second pixel region of the first unit pixel region overlaps portions of the second, third, and fourth unit pixel regions.