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Class Information
Number: 257/E31.06
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductor devices responsive or sensitive to electromagnetic radiation (e.g., infrared radiation, adapted for conversion of radiation into electrical energy or for control of electrical energy by such radiation processes, or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof) (epo) > Adapted to control current flow through device (e.g., photoresistor) (epo) > For device having potential or surface barrier (e.g., phototransistor) (epo) > Device sensitive to infrared, visible, or ultraviolet radiation (epo) > Characterized by only one potential or surface barrier (epo) > Pn homojunction potential barrier (epo) > Device comprising active layer formed only by group iv compound (epo)
Description: This subclass is indented under subclass E31.057. This subclass is substantially the same in scope as ECLA classification H01L31/103D.










Patents under this class:

Patent Number Title Of Patent Date Issued
8222075 Nonvolatile semiconductor memory device using a variable resistance film and method of manufacturing the same Jul. 17, 2012
8048705 Method and structure for a CMOS image sensor using a triple gate process Nov. 1, 2011
7999250 Silicon-germanium-carbon semiconductor structure Aug. 16, 2011
7420233 Photodiode for improved transfer gate leakage Sep. 2, 2008
5156980 Method of making a rear surface incident type photodetector Oct. 20, 1992
5093589 Charge injection circuit having impedance conversion means Mar. 3, 1992
5075748 Photodetector device Dec. 24, 1991
4553152 Monolithic infrared ray charge transfer element Nov. 12, 1985
4312114 Method of preparing a thin-film, single-crystal photovoltaic detector Jan. 26, 1982
4302531 Method of manufacture of photodiode Nov. 24, 1981
4231053 High electrical frequency infrared detector Oct. 28, 1980
4170781 Photodiode and method of manufacture Oct. 9, 1979
4144540 Tunable infrared detector with narrow bandwidth Mar. 13, 1979
4080723 Method for making and using a group IV-VI semiconductor Mar. 28, 1978
4053919 High speed infrared detector Oct. 11, 1977











 
 
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