Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1986-04-15
1987-08-11
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250211J, H01J 4014
Patent
active
046863737
ABSTRACT:
An infrared imager, wherein an array of detection devices is formed in a thin layer of HgCdTe, which is bonded to a silicon substrate containing a corresponding array of averaging capacitors with addressing and output connections, and via holes through (or bump bonding pads on) the HgCdTe are used to connect each detection device to its corresponding averaging capacitor. The signal from each detection device is repeatedly averaged into its averaging capacitor, so that the output of each pixel site is sensed as an average over a number of read cycles which provides a greatly improved signal-to-noise ratio.
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patent: 4395736 (1983-07-01), Fraleux
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Chapman et al., "Hg.sub.0.7 Cd.sub.03 Te Charge-Coupled Device Shift Register", Apr. 1, 1978, Applied Physics Letter, 32(17), pp. 434-436.
Chapman et al., "Increased Charged Capacity in Breakdown-Limited Metal-Insulated Semiconductor Hg.sub.1-x Cdx, Te Devices Using a Ramped Gate Voltage", Aug. 15, 1980, Applied Physics Letter, 37(4), pp. 419-421.
Lewis, Jr. Adam J.
Tew Claude E.
Heiting Leo
Hoel Carlton H.
Nelms David C.
Sharp Melvin
Texas Instruments Incorporated
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