Patent 7683531 was granted and assigned to Industrial Technology Research Institute on March, 2010 by the United States Patent and Trademark Office.
A triode field emission display is provided. It utilizes the electrical characteristics that an edge structure may raise the electric field intensity to expose an edge of a cathode plate through an opening of a gate layer, thereby forming the edge structure at an emitter to raise the electric field intensity. Therefore, reduction of driving voltage is achieved.