Abstract:
A semiconductor device fabrication method having a recess region in an insulation layer on a silicon substrate, includes the steps of depositing a barrier metal on an entire surface of the insulation layer, filling the recess region with an oxide layer, removing the barrier metal on an upper side of the insulation layer, removing the oxide layer in the recess region and exposing the barrier metal of the recess region, depositing a CVD-Al layer on the barrier metal, and depositing a PVD-Al layer on the CVD-Al layer and re-flowing the PVD-Al layer. The fabrication method of a semiconductor integrated circuit according to the present invention selectively removes a barrier metal in the outside of the recess region to expose the insulation layer to the air, and deposits the CVD-Al layer and the PVD-Al layer, which results in controlling abnormal growth of the CVD-Al metal.
Abstract:
A MOCVD is performed to form a titanium nitride layer on the surface of a semiconductor substrate. Following that, a pulsed plasma treatment is performed to remove hydro-carbon impurities from the titanium nitride layer. Therein, the pulsed plasma treatment is performed in a pressure chamber comprising nitrogen gas (N2) hydrogen gas (H2) or argon gas (Ar). A pressure of the pressure chamber is controlled to between 1 to 3 Torr, with the power of the pressure chamber controlled to between 500 and 1000 watts.
Abstract:
A method for producing an electrode substrate, having an organic insulating region formed of an organic insulating material and an inorganic insulating region formed of an inorganic insulating material on an identical side thereof, includes the steps of performing a plasma treatment of the organic insulating region; forming a first transparent conductive layer in contact with the organic insulating region and a second transparent conductive layer in contact with the inorganic insulating region; and etching the first transparent conductive layer and the second transparent conductive layer in the same step.
Abstract:
The interconnection system of the present invention comprises an interconnection film formed by chemical vapor deposition, wherein the interconnection film comprises an upper layer and a lower layer in which the concentrations of impurities are different. The method of producing an interconnection film comprising an upper layer and a lower layer by chemical vapor deposition using a single chamber, comprises: a lower layer forming step of depositing the lower layer in a recesses by evacuating the chamber and by injecting a reactant gas into the chamber; a cleaning step of subsequently reducing the partial pressure of impurities which are dissociated from the reactant gas; and an upper layer forming step of subsequently depositing an upper layer onto the lower layer by injecting a reactant gas into the chamber.
Abstract:
A semiconductor substrate having a polysilicon layer is loaded into a process chamber of a plasma enhanced chemical vapor deposition device. A silicon source gas, a tungsten source gas, and a hydrogen compound gas for reducing a chlorine radical are introduced into the process chamber, to thereby deposit the tungsten silicide layer on the polysilicon layer. The chlorine radical of the silicon source gas is reduced into hydrogen chloride by the hydrogen compound gas and is removed together with an exhaust gas.
Abstract:
The present invention relates to a method and apparatus for forming interconnects on a substrate such as a semiconductor wafer by filling a conductive material such as copper (Cu) in fine recesses formed in a surface of the substrate. A method for forming interconnects comprises providing a substrate and a target composed of a conductive material in confrontation with each other in a chamber, introducing a sputtering gas into the chamber while a high voltage is applied between the substrate and the target to cause the sputtering gas to collide with the target, and depositing particles of the conductive material emitted from the target on the surface of the substrate to form a thin film, while sputter-etching the thin film by reflection sputtering gas molecules reflected from the target and having high energy.
Abstract:
Embodiments of the present invention are directed to a metallization process for reducing the stress existing between the Al—Cu layer and the titanium nitride (TiN) layer, and solving the galvanic problem. The process does so by cooling the wafer in the vacuum apparatus where the metallization process is performed after formation of the Al—Cu layer and before the formation of the TiN layer. In accordance with an aspect of the present invention, a metallization process comprises placing a wafer in an Al—Cu sputtering chamber to form an Al—Cu layer on the wafer, and transferring the wafer to a titanium nitride sputtering chamber. An inert gas is introduced into the titanium nitride sputtering chamber to cool the wafer. A titanium nitride layer is formed on the Al—Cu layer of the wafer in the titanium nitride sputtering layer after cooling the wafer.
Abstract:
Tungsten silicide WSix is grown through reduction of WF6 with SiCl2H2, and the flow rate between WF6 and SiCl2H2 is controlled in such a manner that the composition ratio x ranges from 2.0 to 2.2 in an initial stage for forming cores on a doped polysilicon layer, and is treated with heat at 700 degrees to 850 degrees in centigrade so as to grow tungsten silicide grains with orientation faster than tungsten silicide grains with orientation; the tungsten silicide WSix is tightly adhered to the doped polysilicon, and the abnormal oxidation is restricted during the heat treatment.
Abstract translation:钨硅化物WSix通过用SiCl 2 H 2还原WF 6而生长,WF6和SiCl 2 H 2之间的流速以这样一种方式进行控制,即在掺杂多晶硅层上形成芯的初始阶段,组成比x在2.0至2.2范围内,以及 以700摄氏度至850摄氏度的热量进行处理,以便使具有<001>取向的硅化钨晶粒长于具有<101>取向的硅化钨晶粒; 钨硅化物WSix紧密地粘附到掺杂的多晶硅,并且在热处理期间异常氧化受到限制。
Abstract:
A gate wire including a plurality of gate lines and gate electrodes in the display area, and gate pads in the peripheral area is formed on a substrate having a display area and a peripheral area. A gate insulating layer, a semiconductor layer, an ohmic contact layer and a conductor layer are sequentially deposited, and the conductor layer and the ohmic contact are patterned to form a data wire including a plurality of data lines, a source electrode and a drain electrode of the display area and data pads of the peripheral area, and an ohmic contact layer pattern thereunder. A passivation layer is deposited and a positive photoresist layer is coated thereon. The photoresist layer is exposed to light through one or more masks having different transmittance between the display area and the peripheral area. The photoresist layer is developed to form a photoresist pattern having the thickness that varies depending on the position. At this time, a thin portion and a thick portion of the photoresist pattern are provided for the display area, and a thick portion and a zero thickness portion for the peripheral area. In the peripheral area, the portions of the passivation layer, the semiconductor layer and the gate insulating layer on the gate pads, and the portions of the passivation layer on the data pads, under the zero thickness portion, are removed. In the display area, the thin portion of the photoresist pattern, and the portions of the passivation layer and the semiconductor layer thereunder are removed but the portions of the passivation layer under the thick portions of the photoresist pattern is not removed. Then, a plurality of pixel electrodes, redundant gate pads and redundant data pads are formed.
Abstract:
Tungsten silicide layers are formed on a substrate and a semiconductor component has deep trench capacitors with a filling of tungsten silicide. The tungsten silicide layers are deposited on the substrate at a temperature of less than 400° C. and at a pressure of less than 10 torr from the vapor phase. The vapor phase hs a tungsten-containing precursor substance and a silicon-containing precursor substance. The molar ratio of the silicon-containing precursor compound to the tungsten-containing precursor compound in the vapor phase is selected to be greater than 500.