ELECTRON EMITTING ELEMENT, ELECTRON EMITTING DEVICE, SELF-LUMINOUS DEVICE, IMAGE DISPLAY DEVICE, COOLING DEVICE, AND CHARGED DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electron emitting element in which conductive fine particles are uniformly dispersed on an electron acceleration layer, and electrons can be stably emitted for a long period of time.

SOLUTION: A fine particle layer 4 contains conductive fine particles 6 and insulating fine particles 5 with a primary average particle diameter larger than that of the conductive fine particles 6. An average particle diameter of an aggregate of the conductive fine particles 6 in the fine particle layer 4 is 0.35μm or less.

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