Patent ID: 9681502
Date: 2017-06-13
CPC Classifications: F21K,H01L,H05B

Claim:
1. A lighting device comprising: a circuit substrate comprising an anode electrode and a cathode electrode that are arranged separated from each other on a surface of the circuit substrate with a space between the anode electrode and the cathode electrode; a light-emitting device comprising a light-emitting element that comprises a p-contact and an n-contact arranged separated from each other on a first surface of the light-emitting element, and a first phosphor layer comprising phosphor particles and covering the light-emitting element except portions of the p-contact and n-contact of the light-emitting element, the first surface of the light-emitting element facing the circuit substrate and a second phosphor layer comprising phosphor particles and arranged in the space between the anode electrode and the cathode electrode of the circuit substrate, wherein the first phosphor layer comprises a higher density of the phosphor particles on a position of the first surface between the p-contact and the n-contact of the light-emitting element than on a position of a second surface that is a surface opposite to the first surface of the light-emitting element, wherein an air layer is located between a lower surface of the first phosphor layer and an upper surface of the second phosphor layer of the circuit substrate, and wherein the first surface with the first phosphor layer between the p-contact and the n-contact of the light-emitting element of the light-emitting device is electrically mounted on the anode electrode and the cathode electrode of the circuit substrate that comprises the second phosphor layer arranged between the anode electrode and the cathode electrode of the circuit substrate.