Patent classifications
H01L29/66515
Devices for LDMOS and other MOS transistors with hybrid contact
A lateral DMOS transistor structure includes a substrate of a first dopant polarity, a body region of the first dopant polarity, a source region, a drift region of a second dopant polarity, a drain region, a channel region, a gate structure over the channel region, a hybrid contact implant, of the second dopant polarity, in the source region, and a respective metal contact on or within each of the source region, gate structure, and drain region. The hybrid contact implant and the metal contact together form a hybrid contact defining first, second, and third electrical junctions. The first junction is a Schottky junction formed vertically between the source metal contact and the body. The second junction is an ohmic junction formed laterally between the source metal contact and the hybrid contact implant. The third junction is a rectifying PN junction between the hybrid contact implant and the channel region.
Gate tie-down enablement with inner spacer
A gate tie-down structure includes a gate structure including a gate conductor and gate spacers and inner spacers formed on the gate spacers. Trench contacts are formed on sides of the gate structure. An interlevel dielectric (ILD) has a thickness formed over the gate structure. A horizontal connection is formed within the thickness of the ILD over an active area connecting the gate conductor and one of the trench contacts over one of the inner spacers.
Embedded non-volatile memory device and fabrication method of the same
Systems and methods of forming such include method, forming a memory gate (MG) stack in a first region, forming a sacrificial polysilicon gate on a high-k dielectric in a second region, wherein the first and second regions are disposed in a single substrate. Then a select gate (SG) may be formed adjacent to the MG stack in the first region of the semiconductor substrate. The sacrificial polysilicon gate may be replaced with a metal gate to form a logic field effect transistor (FET) in the second region. The surfaces of the substrate in the first region and the second region are substantially co-planar.
CONTACT STRUCTURES OVER AN ACTIVE REGION OF A SEMICONDUCTOR DEVICE
A method of fabricating a semiconductor device is provided, which includes providing a plurality of fins over a substrate and forming a plurality of first gate structures having a first gate pitch and a plurality of second gate structures having a second gate pitch traversing across a first and a second set of fins, respectively. The second gate pitch is wider than the first gate pitch. Epitaxial regions are formed between adjacent second gate structures in the second set of fins. A dielectric layer is deposited over the second gate structures and the epitaxial regions. Contact openings are formed in the dielectric layer. At least one of the contact openings is formed over the second gate structure where the second gate structure traverses across the second set of fins. The contact openings are filled with a conductive material to form contact structures electrically coupled to the second gate structures.
Integrated Circuit And Method Of Manufacturing The Same
Provided is an integrated circuit including a substrate, a plurality of first gate structures, a protective layer, a second gate structure, a source region, and a drain region. The substrate has a cell region and a peripheral region. The plurality of first gate structures are disposed in the cell region. A top surface and a sidewall of the plurality of first gate structures are covered by the protective layer. The second gate structure is disposed in the peripheral region. The source region and the drain region are disposed on the both side of the second gate structure. A manufacturing method of the integrated circuit is also provided.
VERTICAL FIELD-EFFECT TRANSISTOR LATE GATE RECESS PROCESS WITH IMPROVED INTER-LAYER DIELECTRIC PROTECTION
A method for forming a semiconductor device is disclosed. The method includes receiving a substrate stack including at least one semiconductor fin, the substrate stack including: a bottom source/drain epi region directly below the semiconductor fin; a vertical gate structure directly above the bottom source/drain epi region and in contact with the semiconductor fin; a first inter-layer dielectric in contact with a sidewall of the vertical gate structure; and a second interlayer-layer dielectric directly above and contacting a top surface of the first inter-layer dielectric. The method further including: etching a top region of the semiconductor fin and the gate structure thereby creating a recess directly above the top region of the semiconductor fin and the vertical gate structure; and forming in the recess a top source/drain epi region directly above, and contacting, a top surface of the semiconductor fin. A novel semiconductor device structure is also disclosed.
SOURCE OR DRAIN STRUCTURES FOR GERMANIUM N-CHANNEL DEVICES
Integrated circuit structures having source or drain structures and germanium N-channels are described. In an example, an integrated circuit structure includes a fin having a lower fin portion and an upper fin portion, the upper fin portion including germanium. A gate stack is over the upper fin portion of the fin. A first source or drain structure includes an epitaxial structure embedded in the fin at a first side of the gate stack. A second source or drain structure includes an epitaxial structure embedded in the fin at a second side of the gate stack. Each epitaxial structure includes a first semiconductor layer in contact with the upper fin portion, and a second semiconductor layer on the first semiconductor layer. The first semiconductor layer comprises silicon, germanium and phosphorous, and the second semiconductor layer comprises silicon and phosphorous.
SELF-ALIGNED GATE CONTACT INTEGRATION WITH METAL RESISTOR
A middle-of-line (MOL) structure is provided and includes device and resistive memory (RM) regions. The device region includes trench silicide (TS) metallization, a first interlayer dielectric (ILD) portion and a first dielectric cap portion disposed over the TS metallization and the first ILD portion. The RM region includes a second dielectric cap portion, a second ILD portion and an RM resistor interposed between the second dielectric cap portion and the second ILD portion.
GATE-TOP DIELECTRIC STRUCTURE FOR SELF-ALIGNED CONTACT
Semiconductor structures and methods of forming the same are provided. A semiconductor structure according to the present disclosure includes an active region having a channel region and a source/drain region, a gate structure over the channel region, a gate spacer layer disposed over the channel region and extending along a sidewall of the gate structure, an epitaxial source/drain feature over the source/drain region, a contact etch stop layer (CESL) disposed on the epitaxial source/drain feature and extending along a sidewall of the gate spacer layer, a source/drain contact disposed over the epitaxial source/drain feature, and a dielectric cap layer disposed over the gate structure, the gate spacer layer and at least a portion of the CESL. A sidewall of the source/drain contact is in direct contact with a sidewall of the CESL.
SELF-ALIGNED CONTACTS FOR VERTICAL FIELD EFFECT TRANSISTORS
Semiconductor devices and methods of forming the same include forming a gate stack in contact with sidewalls of a semiconductor fin and on a bottom spacer over a bottom source/drain region. An encapsulating material is selectively deposited over the gate stack, leaving the bottom spacer exposed. An inter-layer dielectric is formed over the encapsulating material. A via is formed in the inter-layer dielectric to contact the bottom source/drain layer.