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Class Information
Number: 257/E29.273
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable by only signal applied to control electrode (e.g., base of bipolar transistor, gate of field-effect transistor) (epo) > Unipolar device (epo) > Field-effect transistor (epo) > With field effect produced by insulated gate (epo) > Thin-film transistor (epo)
Description: This subclass is indented under subclass E29.255. This subclass is substantially the same in scope as ECLA classification H01L29/786.

Sub-classes under this class:

Class Number Class Name Patents
257/E29.295 Characterized by insulating substrate or support (epo) 323
257/E29.299 Characterized by property or structure of channel or contact thereto (epo) 768
257/E29.296 Comprising group iii-v or ii-vi compound, or of se, te, or oxide semiconductor (epo) 235
257/E29.297 Comprising group iv non-si semiconductor materials or alloys (e.g., ge, sin alloy, sic alloy) (epo) 202
257/E29.285 Silicon transistor (epo) 33
257/E29.274 Vertical transistor (epo) 208
257/E29.275 With multiple gates (epo) 719
257/E29.276 With supplementary region or layer in thin film or in insulated bulk substrate supporting it for controlling or increasing voltage resistance of device (epo) 87

Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
5666175 Optical systems for displays Sep. 9, 1997
5661371 Color filter system for light emitting display panels Aug. 26, 1997
5656537 Method of manufacturing a semiconductor device having SOI structure Aug. 12, 1997
5583335 Method of making an eye tracking system having an active matrix display Dec. 10, 1996
5581385 Single crystal silicon arrayed devices for projection displays Dec. 3, 1996
5539550 Liquid crystal display having adhered circuit tiles Jul. 23, 1996
5499124 Polysilicon transistors formed on an insulation layer which is adjacent to a liquid crystal material Mar. 12, 1996
5475514 Transferred single crystal arrayed devices including a light shield for projection displays Dec. 12, 1995
5444557 Single crystal silicon arrayed devices for projection displays Aug. 22, 1995
5438241 Single crystal silicon arrayed devices for display panels Aug. 1, 1995
5424225 Method of manufacturing a thin film SOI MOSFET Jun. 13, 1995
5396304 Slide projector mountable light valve display Mar. 7, 1995
5376561 High density electronic circuit modules Dec. 27, 1994
5376979 Slide projector mountable light valve display Dec. 27, 1994
5377031 Single crystal silicon tiles for liquid crystal display panels including light shielding layers Dec. 27, 1994
5362671 Method of fabricating single crystal silicon arrayed devices for display panels Nov. 8, 1994
5343051 Thin-film SOI MOSFET Aug. 30, 1994
5331149 Eye tracking system having an array of photodetectors aligned respectively with an array of pixels Jul. 19, 1994
5317436 A slide assembly for projector with active matrix moveably mounted to housing May. 31, 1994
5317236 Single crystal silicon arrayed devices for display panels May. 31, 1994
5258320 Single crystal silicon arrayed devices for display panels Nov. 2, 1993
5258325 Method for manufacturing a semiconductor device using a circuit transfer film Nov. 2, 1993
5256562 Method for manufacturing a semiconductor device using a circuit transfer film Oct. 26, 1993
5206749 Liquid crystal display having essentially single crystal transistors pixels and driving circuits Apr. 27, 1993
5125007 Thin-film SOI-MOSFET with a body region Jun. 23, 1992
4065781 Insulated-gate thin film transistor with low leakage current Dec. 27, 1977

1 2 3 4 5 6 7 8

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