Abstract:
A static RAM cell (250) may be formed on the basis of two double channel transistors (200N, 200P) and a select transistor (200S), wherein a body contact may be positioned laterally between the two double channel transistors in the form of a dummy gate electrode structure (205A), while a further rectangular contact (230) may connect the gate electrodes, the source regions and the body contact, thereby establishing a conductive path to the body regions of the transistors. Hence, compared to conventional body contacts, a very space-efficient configuration may be established so that bit density in static RAM cells may significantly be increased.
Abstract:
An LDMOS transistor (100) on a substrate (70a, 70b) of a first conductivity type, comprises a source region (10) with a source portion (73) and a drain region (12). The source portion and drain region are of a second conductivity type opposite to the first conductivity type and are mutually connected through a channel region (28) in the substrate over which a gate electrode (14) extends. The drain region comprises a drain contact region (16) and a drain extension region (15) which extends from the channel region (28) towards the drain contact region. The drain contact region is electrically connected to a top metal layer (22) by a drain contact (20), and a poly-Si drain contact layer (80) is arranged as a first contact material in between the drain contact region and the drain contact in a contact opening (51) of a first dielectric layer (52) deposited on the surface of the drain region. The poly-Si drain contact layer comprises a dopant element of the second conductivity type which is diffused therefrom through annealing to form said drain contact region.
Abstract:
Methods, structures and designs for self-aligned local interconnects are provided. The method includes designing diffusion regions to be in a substrate. Some of a plurality of gates are designed to be active gates and some of the plurality of gates are designed to be formed over isolation regions. The method includes designing the plurality of gates in a regular and repeating alignment along a same direction, and each of the plurality of gates are designed to have dielectric spacers. The method also includes designing a local interconnect layer between or adjacent to the plurality of gates. The local interconnect layer is conductive and disposed over the substrate to allow electrical contact and interconnection with or to some of the diffusion regions of the active gates. The local interconnect layer is self-aligned by the dielectric spacers of the plurality of gates.
Abstract:
Microfeature workpieces having interconnects and conductive backplanes and associated systems and methods are disclosed herein. One such device includes a semiconductor substrate having integrated circuitry and terminals electrically coupled to the integrated circuitry. The device also includes electrically conductive interconnects extending through at least a portion of the semiconductor substrate and electrically coupled to corresponding terminals. The device further includes a conductive backplane assembly having a conductive layer at a back side of the semiconductor substrate. One or more of the interconnects are electrically coupled to the conductive layer at the back side of the semiconductor substrate.
Abstract:
A semiconductor structure and method of fabricating the structure. The method includes removing the backside silicon (110A and 110B) from two silicon-on- insulator wafers (110A and 100B), respectively, having devices (130A and 130B), respectively, fabricated therein and bonding them back to back utilizing the buried oxide layers (115). Contacts (210) are then formed in the upper wafer (I00B) to devices (130A) in the lower wafer (100A) and wiring levels (170) are formed on the upper wafer (100B). The lower wafer (100A) may include wiring levels (170). The lower wafer (100A) may include landing pads (230) for the contacts. Contacts to the silicon layer (120) of the lower wafer (100A) may be silicided.
Abstract:
An integrated circuit (10, 250) having a plurality of active areas (12, 14, 16) separated from each other by a field region (18) and a method for manufacturing the integrated circuit (10, 250). A first polysilicon finger (20) is formed over the first active area (12) and the field region (18) and a second polysilicon finger (22) is formed over the second active area (16) and the field region (18). A first dielectric layer (168) is formed over the first active area (12) and the field region (18) and a second dielectric layer (170) is formed over the second active area (16) and the portion of the first dielectric layer (168) over the field region (18). A first electrical interconnect (175) is formed over and dielectrically isolated from the first polysilicon finger (20) and a second electrical interconnect (177) is formed over and dielectrically isolated from the second active area (16). The second electrical interconnect (177) is electrically coupled to the second polysilicon finger (22).
Abstract:
In one embodiment, a shared contact structure (330) electrically connects a gate (310-1), a diffusion region (305-1), and another diffusion region. The shared contact structure (330) may comprise a trench that exposes the gate (310-1), the diffusion region (305-1), and the other diffusion region. The trench may be filled with a metal (373) to form electrical connections. The trench may be formed in a dielectric layer (351) using a self-aligned etch step, for example.
Abstract:
Embodiments herein present a structure, method, etc. for making high density MOSFET circuits with different height contact lines. The MOSFET circuits comprise a contact line (500, 1300), a gate (310, 1210) situated proximate the contact line (500, 1300). The contact line (500, 1300) comprises a height that is less than the height of the gate (310, 1210). The MOSFET circuits further comprise gate spacers (710, 715, 1610, 1615) situated proximate the gate (310, 1210) and no contact line spacer situated proximate the contact line (500, 1300) and between the contact line (500, 1300) and the gate (310, 1210).
Abstract:
An integrated circuit (10, 250) having a plurality of active areas (12, 14, 16) separated from each other by a field region (18) and a method for manufacturing the integrated circuit (10, 250). A first polysilicon finger (20) is formed over the first active area (12) and the field region (18) and a second polysilicon finger (22) is formed over the second active area (16) and the field region (18). A first dielectric layer (168) is formed over the first active area (12) and the field region (18) and a second dielectric layer (170) is formed over the second active area (16) and the portion of the first dielectric layer (168) over the field region (18). A first electrical interconnect (175) is formed over and dielectrically isolated from the first polysilicon finger (20) and a second electrical interconnect (177) is formed over and dielectrically isolated from the second active area (16). The second electrical interconnect (177) is electrically coupled to the second polysilicon finger (22).
Abstract:
The invention includes methods for forming electrical connections associated with semiconductor constructions. A semiconductor substrate is provided which has a conductive line thereover, and which has at least two diffusion regions adjacent the conductive line. A patterned etch stop is formed over the diffusion regions. The patterned etch stop has a pair of openings extending through it, with the openings being along a row substantially parallel to an axis of the line. An insulative material is formed over the etch stop. The insulative material is exposed to an etch to form a trench within the insulative material, and to extend the openings from the etch stop to the diffusion regions. At least a portion of the trench is directly over the openings and extends along the axis of the line. An electrically conductive material is formed within the openings and within the trench.