Abstract:
An etch rate of a nitride liner layer is improved relative to an etch rate of a nitride cap layer. The nitride liner layer is located at an exposed portion of a substrate adjacent to a stacked structure also located atop the substrate. The nitride cap layer is located atop the stacked structure. An oxide spacer is formed along sidewalls of the stacked structure. The nitride liner layer is patterned and etched to form at least one opening therein to the substrate while the nitride cap layer remains substantially intact.
Abstract:
An etch rate of a nitride liner layer is improved relative to an etch rate of a nitride cap layer. The nitride liner layer is located at an exposed portion of a substrate adjacent to a stacked structure also located atop the substrate. The nitride cap layer is located atop the stacked structure. An oxide spacer is formed along sidewalls of the stacked structure. The nitride liner layer is patterned and etched to form at least one opening therein to the substrate while the nitride cap layer remains substantially intact.
Abstract:
The production of a semiconductor wafer useful in e.g. chip cards, comprises providing a semiconductor substrate (1) from a first semiconductor material with a first surface and a second surface, which faces the first surface, applying a first semiconductor layer (2) from a second semiconductor material epitaxially on the second surface, and partially removing the substrate from the first semiconductor layer. The epitaxial application of a second semiconductor layer (3) from a third semiconductor material on the first semiconductor layer takes place to the desired target thickness. The production of a semiconductor wafer useful in e.g. chip cards, comprises providing a semiconductor substrate (1) from a first semiconductor material with a first surface and a second surface, which faces the first surface, applying a first semiconductor layer (2) from a second semiconductor material epitaxially on the second surface, and partially removing the substrate from the first semiconductor layer. The epitaxial application of a second semiconductor layer (3) from a third semiconductor material on the first semiconductor layer takes place to the desired target thickness. After the partial removing, the first semiconductor layer is partly removed via corroding. Before corroding a prefabricated device is attached as an etching mask at the first surface of the substrate. The device covers an external area of the first surface and limits an opening that releases an internal area of the first surface of the substrate, and is again removed after corroding. A semiconductor component (4) is formed in the first- and second semiconductor layer before the partial removing of the substrate.
Abstract:
Vorgeschlagen wird eine Halbleitervorrichtung (100). Die Halbleitervorrichtung (100) enthält eine Verdrahtungs-Metallschichtstruktur (102). Die Halbleitervorrichtung (100) enthält ferner eine direkt auf der Verdrahtungs-Metallschichtstruktur (102) angeordnete Dielektrikumsschichtstruktur (104). Die Halbleitervorrichtung (100) enthält überdies eine zumindest teilweise direkt auf der Dielektrikumsschichtstruktur (104) angeordnete Bondingpad-Metallschichtstruktur (106). Eine Schichtdicke (td) der Dielektrikumsschichtstruktur (104) reicht von 1% bis 30% einer Schichtdicke (tw) der Verdrahtungs-Metallschichtstruktur (102). Die Verdrahtungs-Metallschichtstruktur (102) und die Bondingpad-Metallschichtstruktur (106) sind durch Öffnungen (108) in der Dielektrikumsschichtstruktur (104) elektrisch verbunden.
Abstract:
A first main surface/front side (9) has a metal coating (5). A second main surface/rear side (10) has first (3) and second (4) areas doped with a power-type doping agent. Doped areas on a semiconductor substrate's rear (1) side are treated at a temperature above a melting temperature for the metal coating on the front side. An independent claim is also included for a method for producing semiconductor components with a vertical structure so as to handle heat in a semiconductor substrate.
Abstract:
The method involves placing a doping material with certain dosage in an area near an outer surface of a semiconductor. The semiconductor is subjected to a specified temperature during curing treatment, where the temperature should not exceed 550 degree Celsius. The material and its dosage are selected and introduced into the semiconductor in such a way that the material makes the semiconductor amorphous in the area.
Abstract:
A damascene method of forming conductive lines in an integrated circuit chip. Trenches are etched by a plasma formed by capacitively coupling a gas mixture at 500 to 3000watts under a pressure of 50 - 400mTorr. The gas mixture includes 2 - 30sccm of C4F8 2
Abstract:
A damascene method of forming conductive lines in an integrated circuit chip. Trenches are etched by a plasma formed by capacitively coupling a gas mixture at 500 to 3000watts under a pressure of 50 - 400mTorr. The gas mixture includes 2 - 30sccm of C4F8, 20 - 80sccm of CO, 2 - 30sccm of O2 and 50 - 400sccm of Ar. Gas flow can be adjusted to an optimum level, thereby achieving a high degree of uniformity. Wafers falling below a selected uniformity may be reworked. A damascene wiring layer formed in the trenches with an acceptable flow exhibit a high degree of sheet resistance uniformity and improved line to line shorts yield.
Abstract:
A process for producing very high-density embedded DRAM/very high-performance logic structures comprising fabricating vertical MOSFET DRAM cells with salicided source/drain and gate conductor dual workfunction MOSFETs in the supports, comprising: Forming a french capacitor in a silicon substrate having a gate oxide layer, a polysilicon layer, and a top dialectric nitride layer deposited thereon; Applying a patterned mask over the array and support areas and forming recesses in the nitride layer, the polysilicon layer, and shallow trench isolation region; Forming a silicide and oxide cap in the recesses in the nitride layer, the polysilicon layer, and shallow trench isolation region; Applying a block mask to protect the supports while stripping the nitride layer from the array and etching the exposed polysilicon layer to the top of the gate oxide layer; Striping the nitride layer from the support region and depositing a polysilicon layer over the array and support areas; Applying a mask to pattern and form a bitline diffusion stud landing pad in the array and gate conductors for the support transistors; Saliciding the tops of the landing pad and the gate conductors; Applying an interlevel oxide layer and then opening vias in the interlevel oxide layer for establishing conductive wiring channels.
Abstract:
In order to form a cavity for a fusible link in a semiconductor device, an etchable material is applied over and around a portion of the fusible link and the etchable material is coated with a protection layer. The access abutting the etchable material is formed through the protection layer. After the removal of the etchable material, the access is partially filled with a refilling material to thereby form the cavity.