FIELD: physics.
SUBSTANCE: device includes a semiconductor light-emitting diode (LED), a phosphor layer on top of the LED and a sealing compound on top of the LED and the phosphor, which is in contact with the phosphor and includes a transparent material containing inert particles of a non-phosphor, which make up 0.5-10% of the weight of the sealing compound, with average diameter smaller than 1 mcm, wherein the particles have a white colour in white ambient light. The method of making the LED involves forming a layer of phosphor on top of a LED and forming a sealing compound on top of the LED and the phosphor.
EFFECT: high brightness by eliminating yellow-green colour.
14 cl, 8 dwg
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