Two-dimensional laser diode array

摘要

A two-dimensional LD (laser diode) array light-emitting device is constituted by stacking light-emitting units (Pn-1, Pn, Pn+1) each having a LD bar (60) and a cooling assembly (10) for cooling the LD bar (60), with a simplified electrical connection structure to reduce manufacturing cost. The cooling assembly (10) is electrically connected with one electrode of the LD bar (60) through a die spacer (41) so that a part of the cooling assembly (10) serves as one electrode of the light-emitting unit (Pn). The other electrode of the LD bar (60) is electrically connected with a webbed extending section (22) of a conductive layer of a TAB (tape-automated bonding) sheet (20) so that the conductive layer serves as the other electrode of the light-emitting unit (Pn). A space between the adjacent cooling assemblies (10) for arranging the LD bar (60) is adjusted by a spacer sheet (31) intervened between the TAB sheet (20) and the cooling assembly (10).