Patent ID: 6842201

Claim:
An active matrix substrate for a liquid crystal display, comprising: a transparent substrate having a plurality of active device regions and a plurality of pixel regions; a plurality of data lines disposed on the transparent substrate, parallel to a first direction and having a plurality of protruding portions covering the active device regions; a low k dielectric layer covering the data lines and the transparent substrate, the low k dielectric layer having a plurality of contact windows contacting the corresponding surfaces of the protruding portions of data lines; a plurality of gate lines disposed on the low k dielectric layer, perpendicular to the first direction and having a plurality of protruding portions covering the active device regions, the data lines and the gate lines defining a plurality of regions including the active device regions and the pixel regions; a gate-insulating layer disposed under the gate lines, contacting the gate lines and having the same pattern as the gate lines; a semiconductor layer disposed between the gate-insulating layer and the low k dielectric layer, having the same pattern as the gate lines; a plurality of sources and drains disposed between the semiconductor layer and the low k dielectric layer, wherein a channel exists between each source and its corresponding drain; a plurality of pixel electrodes disposed on the low k dielectric layer at the pixel regions and contacting the drains; a plurality of conducting lines connecting the data lines and the sources through the contact windows; and a passivating layer disposed on the gate lines and the conducting lines.