| 摘要 |
PROBLEM TO BE SOLVED: To provide an electron emission element having an emitter part composed of a dielectric, restraining excessive emission of electron and preventing a damage of electrode or the like caused by the emission of electron, with prolonged life and improved reliability. SOLUTION: The light source 10A has a light emission part 14 formed by two-dimensionally arranging a plurality of electron emission elements 12, and a driving circuit 16 impressing driving voltage Va on respective electron emission elements 12 of the light emission part 14. The driving circuit 16 drives and controls respective electron emission elements 12 by impressing the driving voltage Va on an upper electrode 18 and a lower electrode 20 of the respective electron emission elements 12 depending on a control signal Sc indicating turn-on/turn-off from outside (an on-off switch or the like). The electron emission element 12 has a plate-shaped emitter part 22, the upper electrode 18 formed on the front surface of the emitter part 22, and the lower electrode 20 formed on the back surface of the emitter part 22. COPYRIGHT: (C)2005,JPO&NCIPI
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