Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation
Patent
1991-12-18
1994-07-05
Crane, Sara W.
Active solid-state devices (e.g., transistors, solid-state diode
Responsive to non-electrical signal
Electromagnetic or particle radiation
257447, 257448, 257459, 257465, H01L 2714, H01L 3100
Patent
active
053270053
ABSTRACT:
An IR detector array (10) wherein a metal contact pad (20) makes contact to an underlying radiation detector through one or more thin, electrically conductive stripes (20a). The striped pad contact shape is used in conjunction with a highly absorptive and opaque coating (18) that is interposed between a bottom surface of the contact pad and a top surface of the radiation detector. The highly absorptive coating serves to mask the bottom surface of the metal contact pad from any radiation that would impinge thereon and be reflected. As a result, stray or unabsorbed radiation reaching to a region of the contact pad encounters only the relatively small target presented by the edge of the one or more thin electrically conductive stripes. Furthermore, the one or more thin stripes are aligned with respect to a radiation scan axis and/or rotation axis so as to further minimize the width of the contact edge presented to the unabsorbed radiation, thereby further reducing the probability of an unwanted reflection occurring.
REFERENCES:
patent: 4282290 (1981-08-01), Pellicori
patent: 4377817 (1983-03-01), Nishizawa et al.
patent: 4578693 (1986-03-01), Yazawa et al.
patent: 4717946 (1988-01-01), Godfrey
patent: 5122669 (1992-06-01), Herring
patent: 5132747 (1992-07-01), Matsushima et al.
Crane Sara W.
Denson-Low W. K.
Santa Barbara Research Center
Schubert W. C.
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