Patent ID: 7892880
Filing Date: 2011-02-22
Classification: G01S,H01L,H04N

Abstract:
1. A method of manufacturing a photo-detector array device integrated with a read-out integrated circuit (ROIC) monolithically integrated for a laser-radar image signal, comprising: forming on a semi-insulating InP substrate wafer a photodiode for converting incident light energy to electric energy, a first heterojection bipolar transistor for selecting electric energy of the photodiode in a row of the photodiode array and a second heterojection bipolar transistor for selecting the output of the electrical signals that are transmitted from the photo-detector in a column of the photodiode array; applying polyimide on the semi-insulating InP substrate wafer to be covered the photodiode and the first and the second heterojection bipolar transistors; forming surface pads on the polyimide, the surface pads being electrically connected to electrodes of the photodiode and the first and second heterojection bipolar transistors; and forming metal interconnection lines on the polyimide, the metal interconnection lines being provided for electrical connection between the surface pad of an n-type electrode of the photodiode and the surface pad of an emitter electrode of the first heterojection bipolar transistor and between the surface pad of a collector electrode of the first heterojection bipolar transistor and the surface pad of an emitter electrode of the second heterojection bipolar transistor.