| 摘要 |
<p>PURPOSE: To enlarge the area of emission of electrons, and also, facilitate the supply to the whole of emission face of electrons for emission so as to stabilize and increase the amount of emission, by forming electron emission and supply electrode with a specified thickness to cover an upper electrode and ferroelectrics. CONSTITUTION: An electron emission and supply electrode is made, thinner than an upper electrode and at a thickness of 5000Åor under, in the specified area as occasion demands, such that it covers the the upper electrode 2 and the ferroelectrics 3, out of general electrode material such as Pt or the like. The upper electrode 2 is made in specified area and is grounded, and the ferroelectrics 3 are made in thickness of 100nm-2000μm out of PZT ceramics or the like. An either positive or negative specified electric field is impressed, for positive and negative regions, to the lower electrode 4 by a pulse generator 4. Hereby, the stable emission of a large quantity of electrons becomes possible.</p> |
