Electroluminescent display device for displaying images, has gate and data pad electrodes, both have upper layers having gate and data pad contact holes exposing respective lower layers of the gate and data pad electrodes

摘要

Electroluminescent display device includes a gate pad electrode electrically connected to a gate line and having lower and upper layers; and data pad electrode electrically connected to the data line and having lower and upper layers. The upper layers of the gate and data pad electrodes have gate and data pad contact holes exposing the lower layers of the gate and data pad electrodes, respectively. Electroluminescent display device comprises: (a) two substrates (101, 171) facing each other and having sub-pixel regions; (b) gate line on the first substrate; (c) data line crossing the gate line to define the sub-pixel region on the first substrate; (d) array element connected to the gate and data lines; (e) connection electrode connected to the array element and disposed in the sub-pixel region; (f) gate pad electrode (111) electrically connected to the gate line and having lower and upper layers; (g) data pad electrode electrically connected to the data line and having lower and upper layers; and (h) electroluminescent diode on the second substrate. The data pad electrode is disposed at the same layer as the gate pad electrode. The upper layers of the gate and data pad electrodes have gate and data pad contact holes exposing the lower layers of the gate and data pad electrodes, respectively. An independent claim is also included for a method of fabricating the above electroluminescent display device comprising forming the gate line, the gate pad electrode at one end of the gate line and the data pad electrode on the first substrate. Each of the gate line and the gate and data pad electrodes has lower and upper layers. A gate insulator is formed covering the gate line and the gate and data pad electrodes. The data line is formed on the gate insulator crossing the gate line to define the sub-pixel region. The array element is formed connected to the gate and data lines. A passivation layer (145) is formed on the array element. A connection electrode (155) is formed on the passivation layer in the sub-pixel region. The method includes exposing the lower layers of the gate and data pad electrodes, forming an electroluminescent diode on the second substrate, and attaching the two substrates.