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Class Information
Number: 257/618
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Physical configuration of semiconductor (e.g., mesa, bevel, groove, etc.)
Description: Subject matter wherein the device has a particular physical form, such as a mesa or bevel or groove.


Sub-classes under this class:

Class Number Class Name Patents
257/622 Groove 611
257/623 Mesa structure (e.g., including undercut or stepped mesa configuration or having constant slope taper) 393
257/621 With electrical contact in hole in semiconductor (e.g., lead extends through semiconductor body) 252
257/620 With peripheral feature due to separation of smaller semiconductor chip from larger wafer (e.g., scribe region, or means to prevent edge effects such as leakage current at peripheral chip separation area) 451
257/627 With specified crystal plane or axis 339
257/619 With thin active central semiconductor portion surrounded by thicker inactive shoulder (e.g., for mechanical support) 120


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
6015998 Flexibility control in optical materials Jan. 18, 2000
6002163 Electronic device pad relocation, precision placement, and packaging in arrays Dec. 14, 1999
5998868 Very dense chip package Dec. 7, 1999
5977579 Trench dram cell with vertical device and buried word lines Nov. 2, 1999
5977604 Buried layer in a semiconductor formed by bonding Nov. 2, 1999
5977612 Semiconductor devices constructed from crystallites Nov. 2, 1999
5962892 MISFET and complementary MISFET device having high performance source and drain diffusion layer Oct. 5, 1999
5959346 Method for fabricating metal bumps onto electronic device Sep. 28, 1999
5955776 Spherical shaped semiconductor integrated circuit Sep. 21, 1999
5955759 Reduced parasitic resistance and capacitance field effect transistor Sep. 21, 1999
5945725 Spherical shaped integrated circuit utilizing an inductor Aug. 31, 1999
5936280 Multilayer quadruple gate field effect transistor structure for use in integrated circuit devices Aug. 10, 1999
5932912 Semiconductor device having LDD structure with a recess in the source/drain region which is formed during the removal of a damaged layer Aug. 3, 1999
5926380 Lead frame lattice and integrated package fabrication method applied thereto Jul. 20, 1999
5907764 In-line detection and assessment of net charge in PECVD silicon dioxide (oxide) layers May. 25, 1999
5877943 Clustering adapter for spherical shaped devices Mar. 2, 1999
5847406 Thin film field effect transistor Dec. 8, 1998
5841182 Capacitor structure in a bonded wafer and method of fabrication Nov. 24, 1998
5834828 Nanoporous semiconductor material and fabrication technique for use as thermoelectric elements Nov. 10, 1998
5834812 Edge stripped BESOI wafer Nov. 10, 1998
5828118 System which uses porous silicon for down converting electromagnetic energy to an energy level within the bandpass of an electromagnetic energy detector Oct. 27, 1998
5825076 Integrated circuit non-etch technique for forming vias in a semiconductor wafer and a semiconductor wafer having vias formed therein using non-etch technique Oct. 20, 1998
5786988 Integrated circuit chips made bendable by forming indentations in their back surfaces flexible packages thereof and methods of manufacture Jul. 28, 1998
5783856 Method for fabricating self-assembling microstructures Jul. 21, 1998
5783849 Semiconductor device Jul. 21, 1998
5780900 Thin film silicon-on-insulator transistor having an improved power dissipation, a high break down voltage, and a low on resistance Jul. 14, 1998
5773874 Semiconductor device having a mesa structure for surface voltage breakdown Jun. 30, 1998
5751055 Semiconductor single crystalline substrate and method for production thereof May. 12, 1998
5744852 Bonded wafer Apr. 28, 1998
5744856 Non-square die for integrated circuits and systems containing the same Apr. 28, 1998
5739574 SOI semiconductor device with low concentration of electric field around the mesa type silicon Apr. 14, 1998
5734195 Semiconductor wafer for epitaxially grown devices having a sub-surface getter region Mar. 31, 1998
5726480 Etchants for use in micromachining of CMOS Microaccelerometers and microelectromechanical devices and method of making the same Mar. 10, 1998
5723385 Wafer edge seal ring structure Mar. 3, 1998
5723889 Semiconductor memory device and method for fabricating the same Mar. 3, 1998
5721449 Cam operated inverter bypass safety switch Feb. 24, 1998
5689120 MOS field effect transistor in a dynamic random access memory device and method for fabricating the same Nov. 18, 1997
5684333 Wafer structure in a semiconductor device manufacturing process Nov. 4, 1997
5679960 Compact display device Oct. 21, 1997
5675176 Semiconductor device and a method for manufacturing the same Oct. 7, 1997
5668400 Semiconductor wafer divisible into chips for creating or recording images Sep. 16, 1997
5661333 Substrate for integrated components comprising a thin film and an intermediate film Aug. 26, 1997
5659195 CMOS integrated microsensor with a precision measurement circuit Aug. 19, 1997
5656850 Microelectronic integrated circuit including hexagonal semiconductor "and" g Aug. 12, 1997
5644156 Porous silicon photo-device capable of photoelectric conversion Jul. 1, 1997
5621222 Superlattice semiconductor device Apr. 15, 1997
5589693 Substrates and methods for gas phase deposition of semiconductors and other materials Dec. 31, 1996
5581109 Semiconductor device Dec. 3, 1996
5574294 Vertical dual gate thin film transistor with self-aligned gates / offset drain Nov. 12, 1996
5574308 Semiconductor device and its manufacturing method Nov. 12, 1996

1 2 3 4 5 6 7 8 9 10


 
 
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