Patent ID: 8035102

Claim:
A display substrate comprising: a base; a data line on the base, wherein the data line is oriented in a first direction; a gate line oriented in a second direction that crosses the first direction; a thin film transistor including: a source electrode electrically connected to the data line, a gate electrode electrically connected to the gate line, and a semiconductive layer; a pixel electrode electrically connected to the thin film transistor; and an insulating layer disposed directly under the pixel electrode, wherein the pixel electrode comprises a transparent and electrically conductive oxynitride, wherein the insulating layer comprises a ferroelectric material in contact with the oxynitride; and wherein nitrogen concentration in the contacted oxynitride of the pixel electrode is less than that which would significantly increase resistance of the pixel electrode but is sufficient to inhibit formation of surface defects in the ferroelectric material of the insulating layer that is disposed directly under the pixel electrode.