Discharge field emission device, and light source apparatus and display apparatus applying the same

A light source apparatus, comprising a plurality of discharge field emission devices, wherein each discharge field emission device comprises:

• a cathode;
• an anode;
• a conductive gas, disposed between the cathode and the anode, configured to induce a plurality of electrons from the cathode, wherein the gas pressure of the conductive gas is between 10−1 torr and 10−3 torr;
• and
• a phosphor, disposed on the moving path of the electrons to react with the electrons and emit light.

A display apparatus, having a plurality of display pixels arranged as an array, wherein each display pixel comprises a discharge field emission device, the discharge field emission device comprising:

• a cathode;
• an anode;
• a conductive gas, disposed between the cathode and the anode, configured to induce a plurality of electrons from the cathode, wherein the gas pressure of the conductive gas is between 10−1 torr and 10−3 torr;
• and
• a phosphor, disposed on the moving path of the electrons to react with the electrons and emit light.