Patent ID: 8492981

Claim:
A lighting apparatus using a PN junction light-emitting element, the apparatus comprising: a power transmitting substrate having a plurality of boundaries defined thereon; a plurality of PN junction light-emitting elements positioned within each boundary and divided into a plurality of groups; and a first switch provided on the power transmitting substrate, wherein the first switch goes into the ON state by a supplied AC having a first voltage to cause PN junction light-emitting elements of a first group positioned within each boundary to emit light, and the first switch is in the OFF state when PN junction light-emitting elements of a second group, which is positioned within each boundary and connected in series to the first group, emit light by a supplied AC having a second voltage higher than the first voltage, wherein the plurality of PN junction light-emitting elements within the boundary are packaged in a light-emitting element package, and the boundary is defined by the light-emitting element package.