Solid state photodetector with light-responsive rear face

Details Solid state photodetector with light-responsive rear face Solid state photodetector with light-responsive rear face

1997-11-12

1999-12-21

Tran, Minh Loan

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

257433, 257459, 257461, 257434, H01L 310232, H01L 310203

Patent

active

060052767

ABSTRACT:
A semiconductor photodiode is configured to have its rear face light responsive with electrical contacts formed on the front face. The photodiode can be surface mounted, such as by solder, upon a carrier with the light responsive rear face up. An integral filter over the rear face confines light reaching the semiconductor substrate to desired wavelengths. In one embodiment, the photodiode also includes integral opaque layers over the front and rear faces of the substrate. The rear opaque layer includes an aperture to allow light to strike the rear face adjacent an active region. In another embodiment, the photodiode is configured for double-sided light sensitivity, and the front side faces an aperture through the carrier.

REFERENCES:
patent: 5600173 (1997-02-01), Suzunaga
patent: 5668386 (1997-09-01), Makiuchi et al.
patent: 5801430 (1998-09-01), Forrest et al.
patent: 5852322 (1998-12-01), Speckbacher

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