Abstract:
An integrated circuit chip includes a substrate; a topmost metal layer over the substrate; a lower metal layer on or over the substrate and lower than the topmost metal layer; and at least one bonding pad in the lower metal layer.
Abstract:
A semiconductor device structure includes a substrate having a transistor thereon; a multi-layer contact etching stop layer (CESL) structure covering the transistor, the multi-layer CESL structure comprising a first CESL and a second CESL; and a dielectric layer on the second CESL. The first CESL is made of a material different from that of the second CESL, and the second CESL is made of a material different from that of the dielectric layer.
Abstract:
A capacitor structure is provided. The capacitor structure includes a plurality of first conductive lines paralleled disposed in a conductive layer on a substrate, wherein the first conductive lines are isolated to each other in the conductive layer and are grouped into a first electrode group and a second electrode group, an insulating layer formed on the first conductive lines and in the space between the first conductive lines, a second conductive line formed on the insulating layer electrically connected to the first conductive lines of the first electrode group, and a third conductive line formed on the insulating layer electrically connected to the first conductive lines of the second electrode group.
Abstract:
An interconnection structure includes an inter-layer dielectric; a topmost copper metal layer inlaid into the inter-layer dielectric; an insulating layer disposed on the inter-layer dielectric and the topmost copper metal layer; a via opening in the insulating layer for exposing a top surface of the topmost copper metal layer, wherein the via opening consists of an inwardly tapered upper via portion and a lower via portion having a substantially vertical sidewall profile; and an aluminum layer filling into the via opening.
Abstract:
A memory structure, a memory device and a manufacturing method thereof are provided. First, a substrate is provided and a dielectric layer is formed over the substrate. Then, a pattern is formed in the dielectric layer. An amorphous silicon layer is formed in the pattern and over the dielectric layer. The amorphous silicon layer is patterned to form an electrode over the pattern. Then, a spacer is formed on the sidewall of the electrode. A selective hemispherical grains (HSGS) layer is formed over the surface of the electrode and the surface of the spacer.
Abstract:
A method is provided for use in a semiconductor fabrication process to form buried diffusion junctions in conjunction with shallow-trench isolation (STI) structures in a semiconductor device. This method features beak-like oxide layers formed to serve as a mask prior to the forming of the STI structures, which can prevent the subsequently formed buried diffusion junctions from being broken up during the process for forming the STI structures. Moreover, sidewall-spacer structures are formed on the sidewalls of a silicon nitride layer used as a mask in the ion-implantation process. This can prevent short-circuits between the buried diffusion junctions when the doped areas are annealed to be transformed into the desired buried diffusion junctions.
Abstract:
An MOSFET device is fabricated with a plurality of conductors capacitively coupled to a first electrode, forming a mask on the surface of the first electrode exposing a predetermined zone of the first electrode, doping the first electrode through the mask, removing the mask from the surface of the first electrode, oxidizing the first electrode to form a layer of oxide over the first electrode with a thicker layer of oxide over the predetermined zone and a thinner layer of oxide elsewhere, forming at least one electrode over the first electrode on the thinner layer of oxide outside of the zone and forming at least one other electrode over the first electrode on the thicker layer of oxide inside the zone, whereby the one electrode and the other electrode have substantially different capacitive coupling to the electrode.
Abstract:
A semiconductor transistor device on a semiconductor substrate comprises source/drain regions in the substrate. A tunnelling oxide layer combined with a gate oxide layer covers the substrate including the heavily doped regions. A pair of floating gates above the tunnelling oxide layer form source/drain relationships with three centrally located ones of the heavily doped regions. A first dielectric layer covers the floating gates. A set of control gates cover the first dielectric layer. A second dielectric layer covers the control gates. The floating gate structure, the first dielectric layer, the control gate layer and the second dielectric layer all forming with the three centrally located heavily doped regions an adjacent pair of stacked EEPROM transistor structures, with two additional, adjacent, outboard heavily doped regions. Spacers cover the tunneling oxide regions covering the second dielectric layer and the sides of the stacked structure, and a select gate line extends over the top of the spacer layer structure and in source/drain relationship with the two additional outboard heavily doped regions and the outer ones of the three centrally located heavily doped regions.
Abstract:
A process of fabricating a read only memory device (ROM) wherein the buried N+lines have desirable well defined very narrow widths and are closely spaced. In the process, an insulating layer is deposited on the substrate. Openings for the buried N+lines having vertical sidewalls are formed through the insulating layer. Spacer layers are formed on the vertical sidewalls of the openings. Impurities are implanted through the openings. The insulating layers is removed and the substrate is oxidized to form silicon oxide insulation strips over the buried N+implanted regions. Next, the read only memory (ROM) device is completed by fabricating floating gates and overlying control gates between the buried N+lines interconnected by a conductive lines that are orthogonal to the buried N+buried lines.
Abstract:
A method of producing a ROM device wherein parallel spaced bit line regions are formed in a semiconductor substrate, blanket layers of (1) polysilicon, (2) etch stop material, and (3) polysilicon, are deposited, the layers etched to form orthogonal parallel word lines on the surface of the substrate, a thick insulating layer deposited over the word lines, a resist layer deposited, exposed and developed to define a desired code implant pattern, the exposed areas of the thick layer removed, and the underlie upper polysilicon layer of the bit line removed, and ion implanted into the substrate to form a code implant.