Patent ID: 7433009

Claim:
An array substrate of a thin film transistor liquid crystal display (TFT LCD) where a plurality of pixel regions each spread with a pixel of the TFT LCD are defined, the array substrate comprising: a transparent substrate; a buffer layer formed on the transparent substrate, the buffer layer comprising a first buffer section and a second buffer section in each pixel region, with the first buffer section having a thickness smaller than that of the second buffer section; an active-matrix drive circuitry provided on each of the second buffer section for addressing a pixel of the TFT LCD; a passivation layer formed overlying the active-matrix drive circuitry and having at least one contact hole in each pixel region; and a pixel electrode formed on each of the first buffer section and extended to cover the contact hole of the passivation layer, the pixel electrode being connected to the active-matrix drive circuitry through the contact hole.