Patent ID: 7285459

Claim:
A flat panel display device, comprising a substrate including a thin film transistor region and a capacitor region, the thin film transistor region comprising a thin film transistor having a semiconductor layer, a gate electrode and source and drain electrodes, the capacitor region comprising a capacitor having first and second capacitor electrodes; and an insulating layer formed on the substrate comprising: a first portion of the insulating layer formed over the thin film transistor region insulating the gate electrode from the source and drain electrodes, and a second portion of the insulating layer formed over the capacitor region used as a dielectric layer between the first capacitor electrode and the second capacitor electrode, the first portion of the insulating layer formed over the thin film transistor region is formed of at least double layers and the second portion of the insulating layer formed over the capacitor region used as a dielectric layer between the first capacitor electrode and the second capacitor electrode is formed of a single layer.