Fishing – trapping – and vermin destroying
Patent
1992-07-21
1994-03-22
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437185, 437192, H01L 3118, H01L 2144
Patent
active
052963845
ABSTRACT:
A photoresponsive device and a method of fabricating same, wherein the device includes semiconductor material, such as a cap region (14a), comprised of elements selected from Group IIB-VIA. A molybdenum contact pad (16) is formed upon a surface of the cap region, and a molybdenum ground contact pad is formed on a surface of a base region (12). A wide bandgap semiconductor passivation layer (20) overlies the surface of cap region and also partially overlies the molybdenum contact pad. A dielectric layer (22) overlies the passivation layer, and an indium bump (24) is formed upon the molybdenum contact pad. The indium bump extends upwardly from the molybdenum contact pad and through the dielectric layer. The dielectric layer is in intimate contact with side surfaces of the indium bump such that no portion of the molybdenum contact pad can be physically contacted from a top surface of the dielectric layer. The method eliminates the possibility of unwanted chemical reactions occurring between the In and the underlying contact pad metal. The method also deposits the contact metal before the deposition of the passivation and before a high temperature anneal, with windows to the contact being opened after the anneal so as to reduce localized stresses at the edges of the windows.
REFERENCES:
patent: Re30412 (1980-10-01), Raychaudhuri
patent: 3845494 (1974-10-01), Ameurlaine et al.
patent: 3988774 (1976-10-01), Cohen-Solal et al.
patent: 4085500 (1978-04-01), Hager et al.
patent: 4132999 (1979-01-01), Maille et al.
patent: 4206003 (1980-06-01), Koehler
patent: 4439912 (1984-04-01), Pollard et al.
patent: 4611091 (1986-09-01), Choudary et al.
patent: 4735662 (1988-04-01), Szabo et al.
patent: 4764261 (1988-08-01), Ondris et al.
patent: 4766084 (1988-08-01), Bory et al.
patent: 4818565 (1989-04-01), Franciosi
patent: 4865245 (1989-09-01), Schulte et al.
patent: 5144138 (1992-09-01), Kinch et al.
patent: 5192695 (1993-03-01), Wang et al.
Cockrum Charles A.
Gesswein Francis I.
Schulte Eric F.
Denson-Low W. K.
Fleck Linda J.
Hearn Brian E.
Santa Barbara Research Center
Schubert W. C.
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