Abstract:
The invention relates to a method for producing an integrated semiconductor component (1). At least one isolation trench is formed, a first layer (4) consisting of a non-conductive material is applied by means of a non-conforming deposition process, and a second layer (5) consisting of a non-conductive material is applied at least to the rear side of the semiconductor component by means of a conforming deposition process.
Abstract:
The memory cell arrangement has several ferroelectric memory cells (S) provided in a semiconductor substrate (10). Parallel bit line grooves (1a-1e) run in the longitudinal direction in the main surface of the substrate. A bit line (15a-15d) is provided in the base of each groove. A source drain region (25a-25d) is provided at the ridge of each groove. A channel region is provided in the walls of each groove. The channel regions are provided in one groove wall, such that a controllable switching transistor for selecting the respective memory cell is formed, while the channel region in the other wall is arranged such that the respective transistor is off. Insulated word lines are provided in the transverse direction along the main surface of the substrate through the bit line grooves, to control the selection transistors. Insulation grooves (3a-3c) run in the transverse direction in the main surface of the substrate to insulate the source/drain regions of adjacent memory cells. A ferroelectric capacitor is connected to each source/drain region of respective memory cell (s) above the word lines (2a-2d).
Abstract:
Process for adjusting height of step between active and insulating regions during production of integrated circuits comprises: etching trenches (6) filled with oxide (8') in a semiconductor substrate (1) to isolate active regions; and implanting electrically non-active element into oxide (8') in partial region (II) of semiconductor wafer to change etching rate of oxide in the partial region. An Independent claim is also included for a process for the production of a dynamic random access memory (DRAM) semiconductor memory.
Abstract:
A method for fabricating a semiconductor memory device is described. An insulating layer is disposed on a semiconductor substrate. A matrix of semiconductor memory elements is disposed in the substrate. The semiconductor memory elements include a plurality of contact holes formed in the insulating layer. One contact hole is formed in the insulating layer for each of the semiconductor memory elements. A bit definition region is disposed in the semiconductor substrate underneath each of the contact holes. A contact plug is disposed in each of the contact holes and is in electrical contact with the bit definition region. The bit definition region is configured such that a contact resistance between the semiconductor substrate and the contact plug defines a bit to be stored in the semiconductor memory elements, An evaluation circuit is connected to and evaluates the contact resistance of the semiconductor memory elements.
Abstract:
The production of an HDPCVD oxide-filled insulation trench comprises forming an insulation trench in a semiconductor substrate (60); forming a first silicon oxide layer (66) on the side walls and on the base of the trench by oxidizing; forming a second silicon oxide layer (68) on the side walls and on the base of the trench using an HDPCVD process; and depositing a third silicon oxide layer by HDPCVD so that the trench is filled with silicon oxide. Preferred Features: The insulation trench is 300-500, preferably 350-450 microns m deep and less than 0.3, preferably less then 0.2 microns m wide. The second oxide layer is 20-200, preferably 40-150 nm thick. The third oxide layer is 300-500, preferably 350-450 nm thick. The silicon source in the HDPCVD process is tetraethylorthosilicate.
Abstract:
The invention relates to a method for producing an integrated semiconductor component (1). At least one isolation trench is formed, a first layer (4) consisting of a non-conductive material is applied by means of a non-conforming deposition process, and a second layer (5) consisting of a non-conductive material is applied at least to the rear side of the semiconductor component by means of a conforming deposition process.
Abstract:
A method for the fabrication of an integrated semiconductor component, in which at least one isolation trench is formed, a first layer of a nonconductive material is applied by a nonconformal deposition method, and a second layer of a nonconductive material is applied by a conformal deposition method at least to the back surface of the semiconductor component.
Abstract:
The method involves applying a layer to be planarized over the semiconducting structure with recesses corresponding to trench regions. The substructures have a second sub-structure with second trench regions and the applied layer has further recesses above the second trench regions. A pre- planarizing mask masks a second area on the layer to be planarized above the second sub-structure.
Abstract:
A method for fabricating a semiconductor memory device is described. An insulating layer is disposed on a semiconductor substrate. A matrix of semiconductor memory elements is disposed in the substrate. The semiconductor memory elements include a plurality of contact holes formed in the insulating layer. One contact hole is formed in the insulating layer for each of the semiconductor memory elements. A bit definition region is disposed in the semiconductor substrate underneath each of the contact holes. A contact plug is disposed in each of the contact holes and is in electrical contact with the bit definition region. The bit definition region is configured such that a contact resistance between the semiconductor substrate and the contact plug defines a bit to be stored in the semiconductor memory elements, An evaluation circuit is connected to and evaluates the contact resistance of the semiconductor memory elements.