摘要:
An integrated circuit (IC) chip is provided comprising at least one trench including a stress-inducing material which imparts a stress on a channel region of a device, such as a junction gate field-effect transistor (JFET) or a metal-oxide-semiconductor field-effect transistor (MOSFET). A related method is also disclosed.
摘要:
Device structures for a high voltage junction field effect transistor and design structures for a high voltage integrated circuit. The device structure is manufactured using a hybrid orientation technology wafer with a first semiconductor layer with a first crystalline orientation, a second semiconductor layer with a second crystalline orientation, and an insulating layer between the first and second semiconductor layers. The device structure includes an epitaxial semiconductor region having the second crystalline orientation and first and second p-n junctions in the epitaxial semiconductor region. The epitaxial semiconductor region extends from the second semiconductor layer through the insulating layer and the first semiconductor layer toward a top surface of the first semiconductor layer. The first and second p-n junctions are arranged in depth within the epitaxial semiconductor region between the second semiconductor layer and the top surface of the first semiconductor layer.
摘要:
Device structures for a high voltage junction field effect transistor and design structures for a high voltage integrated circuit. The device structure is manufactured using a hybrid orientation technology wafer with a first semiconductor layer with a first crystalline orientation, a second semiconductor layer with a second crystalline orientation, and an insulating layer between the first and second semiconductor layers. The device structure includes an epitaxial semiconductor region having the second crystalline orientation and first and second p-n junctions in the epitaxial semiconductor region. The epitaxial semiconductor region extends from the second semiconductor layer through the insulating layer and the first semiconductor layer toward a top surface of the first semiconductor layer. The first and second p-n junctions are arranged in depth within the epitaxial semiconductor region between the second semiconductor layer and the top surface of the first semiconductor layer.
摘要:
Disclosed is a method for increasing substrate resistance in a silicon controlled rectifier in order to decrease turn on time so that the silicon controlled rectifier may be used as an effective electrostatic discharge protection device to protect against HBM, MM and CDM discharge events. Additionally, disclosed is an improved SCR structure that is adapted for use as an electrostatic discharge device to protect against human body model events by delivering an electrostatic discharge current directly to a ground rail. The improved SCR structure incorporates various features for increasing substrate resistance and, thereby, for decreasing turn on time. These features include a second n-well that functions as an obstacle to current flow, a narrow current flow channel between co-planar buried n-bands connected to a lower portion of the second n-well, a zero threshold voltage area, and an external resistor electrically connected between the SCR and the ground rail.
摘要:
A lateral diffused metal-oxide-semiconductor field effect transistor (LDMOS transistor) employs a stress layer that enhances carrier mobility (i.e., on-current) while also maintaining a high breakdown voltage for the device. High breakdown voltage is maintained, because an increase in doping concentration of the drift region is minimized. A well region and a drift region are formed in the substrate adjacent to one another. A first shallow trench isolation (STI) region is formed on and adjacent to the well region, and a second STI region is formed on and adjacent to the drift region. A stress layer is deposited over the LDMOS transistor and in the second STI region, which propagates compressive or tensile stress into the drift region, depending on the polarity of the stress layer. A portion of the stress layer can be removed over the gate to change the polarity of stress in the inversion region below the gate.
摘要:
Device structures, fabrication methods, operating methods, and design structures for a silicon controlled rectifier. The method includes applying a mechanical stress to a region of a silicon controlled rectifier (SCR) at a level sufficient to modulate a trigger current of the SCR. The device and design structures include a SCR with an anode, a cathode, a first region, and a second region of opposite conductivity type to the first region. The first and second regions of the SCR are disposed in a current-carrying path between the anode and cathode of the SCR. A layer is positioned on a top surface of a semiconductor substrate relative to the first region and configured to cause a mechanical stress in the first region of the SCR at a level sufficient to modulate a trigger current of the SCR.
摘要:
Methods for responding to an electrostatic discharge (ESD) event on a voltage rail, ESD protection circuits, and design structures for an ESD protection circuit. An RC network of the ESD protection circuit includes a capacitor coupled to a field effect transistor at a node. The node of the RC network is coupled with an input of the inverter. The field-effect transistor is coupled with an output of the inverter. In response to an ESD event, a trigger signal is supplied from the RC network to the input of the inverter, which drives a clamp device to discharge current from the ESD event from the voltage rail. An RC time constant of the RC network is increased in response to the ESD event to sustain the discharge of the current by the clamp device.
摘要:
Device structures, design structures, and fabrication methods for passive devices that may be used as electrostatic discharge protection devices in fin-type field-effect transistor integrated circuit technologies. A device structure is formed that includes a well of a first conductivity type in a device region and a doped region of a second conductivity in the well. The device region is comprised of a portion of a device layer of a semiconductor-on-insulator substrate. The doped region and a first portion of the well define a junction. A second portion of the well is positioned between the doped region and an exterior sidewall of the device region. Another portion of the device layer may be patterned to form fins for fin-type field-effect transistors.
摘要:
Methods and systems for altering the electrical resistance of a wiring path. The electrical resistance of the wiring path is compared with a target electrical resistance value. If the electrical resistance of the wiring path exceeds the target electrical resistance value, an electrical current is selectively applied to the wiring path to physically alter a portion of the wiring path. The current may be selected to alter the wiring path such that the electrical resistance drops to a value less than or equal to the target electrical resistance value.
摘要:
Structures and methods for electrostatic discharge (ESD) device control in an integrated circuit are provided. An ESD protection structure includes an input/output (I/O) pad, and an ESD field effect transistor (FET) including a drain connected to the I/O pad, a source connected to ground, and a gate. A first control FET includes a drain connected to the I/O pad, a source connected to the gate of the ESD FET, and a gate connected to ground. A second control FET includes a drain connected to the gate of the ESD FET and the source of the first control FET, a source connected to ground, and a gate connected to the I/O pad.