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Class Information
Number: 257/341
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Field effect device > Having insulated electrode (e.g., mosfet, mos diode) > Short channel insulated gate field effect transistor > Active channel region has a graded dopant concentration decreasing with distance from source region (e.g., double diffused device, dmos transistor) > Plural sections connected in parallel (e.g., power mosfet)
Description: Subject matter wherein the graded channel doping short channel IGFET has more than one section and a plurality of those sections are connected electrically in parallel (e.g., to form a power MOSFET).










Sub-classes under this class:

Class Number Class Name Patents
257/342 With means to reduce on resistance 555


Patents under this class:
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Patent Number Title Of Patent Date Issued
7465610 Method for operating an H-bridge drive utilizing a pair of high and low side MOSFETS Dec. 16, 2008
7462910 P-channel trench MOSFET structure Dec. 9, 2008
7462909 Semiconductor device and method of fabricating the same Dec. 9, 2008
7462541 Manufacturing method of semiconductor device Dec. 9, 2008
7456472 Semiconductor device and manufacturing method thereof Nov. 25, 2008
7456470 Top drain fet with integrated body short Nov. 25, 2008
7456451 Ultra high voltage MOS transistor device Nov. 25, 2008
7449748 Semiconductor device Nov. 11, 2008
7447041 Compression connection for vertical IC packages Nov. 4, 2008
7446376 IGBT cathode design with improved safe operating area capability Nov. 4, 2008
7446354 Power semiconductor device having improved performance and method Nov. 4, 2008
7439605 Semiconductor device and method for manufacturing the same Oct. 21, 2008
7439584 Structure and method for RESURF LDMOSFET with a current diverter Oct. 21, 2008
7439583 Tungsten plug drain extension Oct. 21, 2008
7439582 Semiconductor device with sense structure Oct. 21, 2008
7436025 Termination structures for super junction devices Oct. 14, 2008
7432134 Semiconductor device and method of fabricating the same Oct. 7, 2008
7429775 Method of fabricating strain-silicon CMOS Sep. 30, 2008
7429774 Electrostatic discharge (ESD) protection MOS device and ESD circuitry thereof Sep. 30, 2008
7427795 Drain-extended MOS transistors and methods for making the same Sep. 23, 2008
7420247 Power LDMOS transistor Sep. 2, 2008
7417285 Semiconductor device having a trench capacitor and a MOSFET connected by a diffusion layer and manufacturing method thereof Aug. 26, 2008
7417284 Semiconductor device and method of manufacturing the same Aug. 26, 2008
7417282 Vertical double-diffused metal oxide semiconductor (VDMOS) device incorporating reverse diode Aug. 26, 2008
7414287 System and method for making a LDMOS device with electrostatic discharge protection Aug. 19, 2008
7411249 Lateral high-voltage transistor with vertically-extended voltage-equalized drift region Aug. 12, 2008
7402494 Method for fabricating high voltage semiconductor device Jul. 22, 2008
7400014 ACCUFET with schottky source contact Jul. 15, 2008
7397084 Semiconductor device having enhanced performance and method Jul. 8, 2008
7394156 Semiconductor integrated circuit device and method of producing the same Jul. 1, 2008
7391084 LDMOS transistor device, integrated circuit, and fabrication method thereof Jun. 24, 2008
7391080 LDMOS transistor device employing spacer structure gates Jun. 24, 2008
7388256 Semiconductor device and a method of manufacturing the same Jun. 17, 2008
7388255 Semiconductor device having separation region Jun. 17, 2008
7385273 Power semiconductor device Jun. 10, 2008
7385250 Semiconductor device Jun. 10, 2008
RE40352 Switch mode power supply with reduced switching losses Jun. 3, 2008
7378317 Superjunction power MOSFET May. 27, 2008
7372111 Semiconductor device with improved breakdown voltage and high current capacity May. 13, 2008
7372104 High voltage CMOS devices May. 13, 2008
7368786 Process insensitive ESD protection device May. 6, 2008
7368785 MOS transistor device structure combining Si-trench and field plate structures for high voltage device May. 6, 2008
7368784 Thermal protection device for an integrated power MOS May. 6, 2008
7365391 Semiconductor device and method for manufacturing thereof Apr. 29, 2008
7361954 Power semiconductor device Apr. 22, 2008
7361952 Semiconductor apparatus and method of manufacturing the same Apr. 22, 2008
7358567 High-voltage MOS device and fabrication thereof Apr. 15, 2008
7358564 Semiconductor device Apr. 15, 2008
7348640 Memory device Mar. 25, 2008
7348246 Methods of fabricating non-volatile memory devices including divided charge storage structures Mar. 25, 2008

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