摘要:
A first capacitor electrode of the capacitor, which is arranged on a surface of a substrate (1), has a lower part (T) and a lateral part (S) arranged thereon. At least a first lateral area of the lateral part (S) is undulatory in such a way that it has bulges and indentations alternately which are formed along lines each running in a plane parallel to the surface of the substrate (1). The lateral part (T) can be produced by depositing conductive material in a depression (V) which is produced in a layer sequence whose layers are composed alternately of a first material and a second material and in which the first material is subjected to wet etching selectively with respect to the second material down to a first depth. The first capacitor electrode is provided with a capacitor dielectric (KD). A second capacitor electrode (P) adjoins the capacitor dielectric (KD).
摘要:
An SRAM cell arrangement which includes six MOS transistors per memory cell wherein each transistor is formed as a vertical transistors. The MOS transistors are arranged at sidewalls of trenches. Parts of the memory cell such as, for example, gate electrodes or conductive structures fashioned as spacers are contacted via adjacent, horizontal, conductive structures arranged above a surface of a substrate. Connections between parts of memory cells occur via third conductive structures arranged at the sidewalls of the depressions and word lines via diffusion regions that are adjacent to the sidewalls of the depressions within the substrate, via first bit lines, via second bit lines and/or via conductive structures that are partially arranged at different heights with respect to an axis perpendicular to the surface. Contacts contact a plurality of parts of the MOS transistors simultaneously.
摘要:
For the operation of a memory cell arrangement with MOS transistors as memory cells that comprise a dielectric triple layer (5) with a first silicon oxide layer (51), a silicon nitride layer (52) and a second silicon oxide layer (53) as gate dielectric, whereby the silicon oxide layers are respectively at least 3 nm thick, a first cutoff voltage value is allocated to a first logical value and a second cutoff voltage value of the MOS transistor is allocated to a second logical value for storing digital data. The information stored in the memory cell can be modified by applying corresponding voltage levels, although a complete removal of charge stored in the silicon nitride layer is not possible because of the thickness of the silicon oxide layers. What is exploited when modifying the cutoff voltage is that the electrical field in the dielectric triple layer is distorted by charge stored in the silicon nitride layer.
摘要:
A method for producing an Al-containing layer having a planar surface onto a substrate having hole structures with high aspect ratios formed in the surface of the substrate, wherein the Al-containing layer is applied in a sputtering process during which the substrate is held at an elevated temperature and the sputtering process is implemented at a pressure between 1.3.times.10.sup.-2 Pa and 13 Pa and at a low partial gas pressure. The substrate can be held at a temperature between approximately 400.degree. C. and 500.degree. C. during the sputtering process. A partial residual gas pressure of less than 1.3.times.10.sup.-5 PA can prevail in the vacuum. An intermediate layer of pure titanium and a barrier layer of TiN can be directly deposited onto the substrate and the Al-containing layer can then be applied onto this intermediate end barrier layer.
摘要:
In a method for manufacturing an electrically writeable and erasable ad-only memory cell arrangement, by self-adjusting process steps, a read-only memory cell arrangement having memory cells that respectively comprise an MOS transistor with a floating gate is manufactured. The MOS transistors are arranged in rows that run parallel. Adjacent rows thus respectively run alternately on the bottom of longitudinal trenches and between adjacent longitudinal trenches. The control gates laterally surround the floating gates so that the memory cells on the bottom of the longitudinal trenches also comprise a coupling ratio>1. A surface requirement per memory cell of 2F.sup.2 (F minimum structural size) is achieved.
摘要:
A self-supporting layer of n-doped monocrystalline silicon is stripped from a substrate wafer of n-doped, monocrystalline silicon by electrochemical etching for manufacturing a solar cell. Holes are formed in the substrate wafer by electrochemical etching, particularly in a fluoride-containing, acidic electrolyte wherein the substrate wafer is connected as an anode. When a depth of the holes that essentially corresponds to the thickness of the self-supporting layer is reached, the process parameters of the etching are modified such that the self-supporting layer is stripped as a consequence of the holes growing together. The solar cell is manufactured from the self-supporting layer, and the method can be applied repeatedly on the same substrate wafer for stripping a plurality of self-supporting layers.
摘要:
An integrated circuit including a first gate stack and a second gate stack and a method of manufacturing is disclosed. One embodiment provides non-volatile memory cells including a first gate stack and a gate dielectric on a first surface section of a main surface of a semiconductor substrate, and a second gate stack including a memory layer stack on a second surface section. A first pattern is transferred into the first gate stack and a second pattern into the second gate stack.
摘要:
An integrated circuit is described. The integrated circuit may have: an active area line formed of a material of a semiconductor substrate with a first longitudinal direction parallel to an upper surface of the semiconductor substrate; wherein the active area line has at least one form-supporting element extending in a second longitudinal direction parallel to the upper surface of the semiconductor substrate; and wherein the second longitudinal direction is arranged with regard to the first longitudinal direction in an angle unequal to 0 degree and unequal to 180 degree.
摘要:
A method of manufacturing at least one NAND-coupled semiconductor component is disclosed. A layer structure is formed on or above a semiconductor substrate. The layer structure is patterned to expose at least one region to be doped. The exposed region is doped and annealed. The patterned layer structure is at least partially removed. Replacing material is formed in the region in which the patterned layer structure has been removed, thereby forming the at least one NAND-coupled semiconductor component.
摘要:
An integrated circuit including a memory cell and a method of manufacturing the integrated circuit are described. The memory cell includes a buried gate select transistor and a resistive memory element coupled to the buried gate select transistor. The resistive memory element stores information based on a resistivity of the resistive memory element.