Patent ID: 7812363

Claim:
A light emitting device module comprising: a plurality of light emitting devices; a submount on which the plurality of light emitting devices are mounted, the submount comprising: a positive front surface electrode; a negative front surface electrode; at least one relay front surface electrode, wherein the plurality of light emitting devices are electrically coupled to each other in series between the positive front surface electrode and the negative front surface electrode via the at least one relay front surface electrode; a plurality of through electrodes; a positive back surface electrode coupled to the positive front surface electrode via a through electrode of the plurality of through electrodes; a negative back surface electrode coupled to the negative front surface electrode via a through electrode of the plurality of through electrodes; and at least one relay back surface electrode, which corresponds to the at least one relay front surface electrode and which is coupled to the at least one relay front surface electrode via a through electrode of the plurality of through electrodes; and a heat-radiant substrate to which the submount is supported and fixed, the heat-radiant substrate comprising: a positive circuit electrode bonded to the positive back surface electrode; a negative circuit electrode bonded to the negative back surface electrode; and at least one relay circuit electrode bonded to the at least one relay back surface electrode and being floated electrically.