Patent ID: 8241936

Claim:
A method for manufacturing a display substrate comprising: forming a data line on a base, wherein the data line is oriented in a first direction; forming a gate line and a gate electrode electrically connected to the gate line, wherein the gate line is oriented in a second direction that crosses the first direction; forming a first insulating layer on the gate line and on the gate electrode, wherein the first insulating layer comprises a ferroelectric material; forming a transparent conductor on and in contact with the ferroelectric material of the insulating layer, wherein the transparent conductor comprises a transparent oxynitride in contact with the ferroelectric material and wherein the ferroelectric-contacting oxynitride has a nitrogen concentration that is less than that which would significantly increase resistance of the transparent conductor but is sufficiently large to inhibit formation of surface defects in the contacted ferroelectric material; and patterning the transparent conductor to form a source electrode electrically connected to the data line, a pixel electrode, and a drain electrode integrally formed with the pixel electrode.