Patent ID: 8148727
Filing Date: 2012-04-03
Classification: G02F,H01L

Abstract:
1. A display device comprising: first and second substrates including a pixel area, a gate pad area, and a data pad area; an oxide thin film transistor (TFT) formed at the pixel area of the first substrate, the oxide thin film transistor including a gate electrode on the first substrate, a gate insulating layer on the whole area of the first substrate, an oxide semiconductor layer on the gate insulating layer, and source and drain electrodes on the oxide semiconductor layer; a gate pad and a data pad at the gate pad area and the data pad area of the first substrate; a metal layer on the gate insulating layer at the gate pad area and connected with the gate pad via a contact hole in the gate insulating layer; a passivation layer on the whole area of the first substrate; a pixel electrode on the passivation layer of the pixel area; first and second transparent conductive layers at the gate pad area and the data pad area, respectively; and a liquid crystal layer between the first and second substrates.