EMISSION LIGHT-EMITTING DIODE CELL Russian patent published in 2015 - IPC H01J21/00 

FIELD: physics, optics.

SUBSTANCE: invention relates to optoelectronics - light emitters and displays. An emission light-emitting diode (LED) cell is shaped like a cylinder, which is a dielectric microchannel, on the inner surface of which there is an electrode in the form of a semiconductor film nanolayer, which combines a cathode, an anode and a collector. A field emitter, secondary emitter and a phosphor are made as a discontinuous coating by nanopowders deposited on the electrode of the microchannel from a common suspension in a single process cycle. The field and secondary emitters can be made of the same material. The composition of the powders, the amount thereof and the fraction of the coated surface are determined empirically in the device and selected to provide a maximum energy effect. The microchannel of the cell with a length L and internal diameter w, during use thereof, is in tight mechanical and electrical contact by its faces with the electrodes, the voltage V between which is applied along electric field lines at an angle φ. The effective voltage for electron emission and luminescence is estimated using the formula V(w/L)tgφ. The disclosed version is distinguished in that it operates as a plurality of successive microemitters. The circuit for flow of electron flux and electric current is closed in each microemitter, which reduces energy losses.

EFFECT: high efficiency of conversion and brightness of radiation, simple technique.

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