The invention relates to a 
flat panel display of 
cathode structure of 
branch controlled inverted arch and a fabrication process thereof, and the 
flat panel display comprises a sealed 
vacuum chamber formed by an anodic glass panel, a cathodic glass panel and 
peripheral glass 
enclosure frames, a 
supporting wall structure and an 
getter auxiliary element, wherein the anodic glass panel is provided with an anodic conductive layer and a fluorescent 
powder layer prepared on the anodic conductive layer and the 
supporting wall structure and the 
getter auxiliary element are arranged between the anodic glass panel and the cathodic glass panel, and the cathodic glass panel is provided with a grid lead wire layer, a carbon nanometer tube and the 
cathode structure of 
branch controlled inverted arch. The invention is capable of increasing the electronic emission area and the electronic 
emission efficiency of a 
cathode of the carbon nanometer tube and reducing 
grid voltage, and has the advantages of stable and reliable manufacturing process, simple fabrication process, low manufacturing cost and simple structure.