摘要:
A different method is provided for forming high aspect ratio damascene structures with an integrated approach of combining electroless plating with physical vapor deposition of copper. A dual damascene structure, having a trench opening and a via opening, is first formed over a metal line on a substrate. The inside walls of the dual structure is lined with a diffusion barrier layer. Then, nitride spacers are formed on the inside walls of both the trench opening and the via opening. The via opening is further lined with a displacement, or, seed, layer. This is followed by forming electroless copper in the via opening, and hence a copper plug. A barrier metal is now formed over both the copper plug and the inside walls of the trench opening. Copper is next deposited over the barrier metal inside the trench, and including over the copper metal plug, using physical vapor deposition (PVD). Any excess metal is subsequently removed by CMP, thus forming a copper dual damascene interconnect that is highly conformable for high aspect ratios, and also void-free and reliable.
摘要:
A method is disclosed for forming insulative inter metal dielectric (IMD) layers without the attendant problems of having voids, key-holes and air gaps. This is accomplished by reducing the aspect ratio of the gaps between metal lines through a judicious two-step dielectric filling process and through the use of two-step removal of the photoresist. That is, the gap is filled with photoresist first, and then partially removed, thereby leaving a portion in the gap to reduce the aspect ratio of the gap. When a second insulative layer is formed over the substrate, the gap between the metal lines is filled without the conventional attendant problem of forming voids or key-holes. Hence, void free IMD integration with improved IMD gap filling is achieved along with improved IMD thermal conductivity through the use of a metal liner.
摘要:
A method for fabricating a stacked capacitor is described, which is applicable to the fabrication of a capacitor with a double-sided double crown bottom electrode. The first crown structure of the bottom electrode is established by forming a patterned material layer which comprises an opening on the substratae as the framework of the amorphous silicon layer of the bottom electrode. The second crown structure of the bottom electrode is to established on the above amorphous silicon layer by forming an amorphous silicon spacer on the sidewall of another patterned material layer.
摘要:
A method of manufacturing a stacked capacitor. A first dielectric layer is formed over a substrate. A first nitride layer is formed on the first dielectric layer. A storage node contact hole is formed to penetrate through the first nitride layer and the first dielectric layer and to expose a portion of the substrate. A first conductive plug is formed in the storage node contact hole. A second dielectric layer is formed on the first nitride layer and the first conductive plug. A second nitride layer is formed on the second dielectric layer. A contact hole is formed to penetrate through the second nitride layer and the second dielectric layer and to expose portions of the first conductive plug. A second conductive plug is formed in the contact hole with a surface level lower than a surface level of the second nitride layer. A metal barrier layer is formed on the second conductive plug and fills the contact hole. A first metal layer is formed over the substrate. The first metal layer, the second nitride layer and the second dielectric layer are patterned to form a storage node. The storage node comprises the second conductive plug and the metal barrier layer. A metal spacer is formed on the sidewall of the storage node. A third dielectric layer is formed over the substrate. A second metal layer is formed on the third dielectric layer.
摘要:
A method for manufacturing an integrated circuit capacitor is provided in the present invention. First, a semiconductor substrate is etched to form a contact hole. A polysilicon contact is then formed to fill into the contact hole. A metal layer is formed on the substrate and the polysilicon contact. Next, a silicon catching layer is formed on the metal layer. An annealing step is performed to substitute the silicon contact with a portion of said metal layer for forming a metal contact, wherein the silicon atom are driven to react with the silicon catching layer for forming a compound layer underneath the silicon catching layer. After the metal layer, the silicon catching layer and the compound layer are removed, the first conduction layer is formed on the substrate and the metal contact to serve as a bottom electrode. Then, a dielectric layer is formed along the surface of the first conduction layer. The second conduction layer is next formed on the dielectric layer to serve as a top electrode.
摘要:
A method of manufacturing a deep trench capacitor. A first silicon oxide layer is formed on a substrate. A first trench is formed in the substrate. A rugged polysilicon layer is formed on the surface of the first trench. The grains of the rugged polysilicon layer are distributed discretely on surface of the first trench. A second silicon oxide layer is formed on the rugged polysilicon layer. The exposed substrate in the first trench is etched, in order to form a plurality of second trenches in the substrate of the first trench. The first and second silicon oxide layer are removed. A first conductive layer is formed over the substrate and conformal to the first trench and the second trenches. A dielectric layer is formed on the first conductive layer. A second conductive layer is formed on the dielectric layer.
摘要:
The method for forming a capacitor in the present invention includes the steps as follows. At first, a multi-layer structure is formed on a semiconductor substrate, and the multi-layer structure is provided to have etching selectivity in etching neighboring layers in the multi-layer structure. A top dielectric layer is then formed on the multi-layer structure. A first opening is defined in the top dielectric layer, and a second opening is defined in the multi-layer structure under the first opening. Next, a wet etch is performed through the second opening to form at least two lateral openings in the multi-layer structure. Following the wet etch, a first conductive layer is formed conformably on the top dielectric layer, on sidewalls of the first opening and the second opening, and filled within the at least two lateral openings. A filling layer is then formed on the substrate, and the filling layer and the first conductive layer on the top dielectric layer are removed. The remained filling layer, the top dielectric layer, and the multi-layer structure are removed to leave a first electrode on the substrate. Finally, an inter-electrode dielectric layer is formed on the first electrode and a second conductive layer is formed on the inter-electrode dielectric layer to finish the formation of a capacitor.
摘要:
A method for manufacturing a fin-trench capacitor is disclosed. The method comprises the steps of: forming a plurality of alternating oxide and nitride layers including a top oxide layer, wherein said nitride layers are sandwiched between said oxide layers; forming a storage node contact opening in said plurality of alternating oxide and nitride layers, stopping at said landing pad; removing a portion of said nitride layers along sidewalls of said contract opening; forming a polysilicon layer over said top oxide layer and conformally along said sidewalls of said contact opening; depositing a photoresist layer into said contact opening; removing a portion of said polysilicon layer on top of said top oxide layer; forming a dielectric layer over said top oxide layer and conformally on top of said polysilicon layer along said sidewalls of said contact opening; forming a top conductive layer over said dielectric layer and in said contact opening.
摘要:
A method for manufacturing a metal-insulator-metal capacitor on a substrate is disclosed. The method comprises the steps of: forming a first dielectric layer onto said substrate; patterning and etching said first dielectric layer to form a contact opening; forming a first metal layer onto said first dielectric layer and into said contact opening; forming a barrier layer onto said first metal layer; forming a second dielectric layer onto said barrier layer; forming a discrete HSG layer onto said second dielectric layer; etching said second dielectric layer by using said HSG layer as a mask; stripping said HSG layer; etching said barrier layer and said first metal layer by using a remaining portion of said second dielectric layer as a mask; stripping said remaining portion of said second dielectric layer; patterning and etching a remaining portion of said barrier layer and a remaining portion of said first metal layer; forming a third dielectric layer over said barrier layer, said first metal layer and said first dielectric layer; and forming a second metal layer over said third dielectric layer.
摘要:
An automatically adjustable wafer probe card for the testing of integrated circuits fabricated on a wafer. The wafer probe card includes a pitch shift assembly having a shift block that includes a reserve needle block and an adjacent functional needle block. Multiple probe needles are linearly adjustable on the shift block, and a selected number of the probe needles can be shifted from the reserve needle block to the functional needle block depending on the number of contact pads on the integrated circuit to be contacted by the probe needles of the wafer probe card during the testing process. A selected spacing between the probe needles, or pitch, can be achieved by locating the probe needles at the selected spacings from each other along the functional needle block.