Patent ID: 6590347
Filing Date: 2003-07-08
Classification: B41J,H01L

Abstract:
A light-emitting element array comprising:a semi-insulating substrate; a three layer semiconductor structure formed on the substrate including first and third layers being a first type and a second layer being a second type different from the first type; a plurality of combinational elements, each of said combinational elements including a transistor and a light-emitting diode both formed from the three layer structure, the plurality of combinational elements being formed on the substrate and arrayed in one line; wherein the plurality of combinational elements are divided into groups n by n (n is an integer &gE;2), bases of the transistors included in each group are separately connected to n base-selecting lines of bus structure, all emitters or all collectors of the transistors are connected together, and all anodes or all cathodes of the light-emitting diodes included in each group are commonly connected to one terminal for every group.