Abstract:
PROBLEM TO BE SOLVED: To realize an interconnection structure that improves the adhesion between an upper low-k dielectric layer and a diffusion barrier cap dielectric layer existing therebeneath. SOLUTION: In the interconnection structure, adhesion between the upper low-k (for example, the dielectric coefficient is less than 4.0) dielectric layer (for example, a dielectric containing an element group consisting of Si, C, O, and H) and the diffusion barrier cap dielectric layer (for example, a cap layer containing an element group consisting of C, Si, N, and H) existing therebeneath is improved, by providing an adhesion transition layer in between the two layers. Because the adhesion transition layer exists between the upper low-k dielectric layer and the diffusion barrier cap dielectric layer, the possibility that the layers in the interconnection structure are separated in a packaging process is reduced. The adhesion transition layer provided here comprises a lower SiO x (or SiON) contained region and an upper C inclination region. Such a structure and, in particular, a method for forming an adhesion transition layer are also provided. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a wiring layer in an integrated circuit structure. SOLUTION: An organic insulating layer is formed, the insulating layer is patterned, a liner is accumulated on the insulating layer, the above structure is exposed in plasma, and a pore is formed in an insulating layer of an area adjacent to the liner. The liner is formed sufficiently thin so that plasma penetrates the liner and the pore is formed on the insulating layer without influencing the liner. During the plasma processing, the plasma penetrates the liner without influencing the liner. After the plasma processing, an additional liner can be accumulated. Thereafter, a conductor is accumulated and an excessive portion of the conductor is deleted from the structure. This method produces an integrated circuit structure including the organic insulating layer having a patterned structure, a liner covering the rear side of the patterned structure, and a conductor filling the patterned structure. The insulating layer includes the pore along the surface area of the insulating layer contacting to the liner, and further, the pore is only existent along the surface area contacting to the liner (where the liner is non-existent inside the pore). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method for a flattened polymer transistor, and a structure thereof. SOLUTION: A completely flattened polymer thin film transistor is formed by processing a first portion of a device including a gate, a source, and a body element using a first flattened carrier. The thin film transistor is preferably formed with an organic material. For a gate dielectric a high K polymer can be employed to improve device performance. Then, a partly completed device structure is upside down, and is transferred to a second flattened carrier. A layer of wax or of a photosensitive organic material is deposited and is employed as a tentative bonding agent. A device including a body region is defined with an etching process. A contact to the device is formed with deposition of a conductive material and chemical/mechanical polishing. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a topography extremely reduced on a semiconductor surface formed by a damascene process. SOLUTION: A diamond or diamond like carbon film is adhered to the surface of a substrate as a polishing stop layer before a metal level pattern is formed. Next, a protective film is adhered on the diamond or diamond like carbon polishing stop layer. The protective film can be used as another polishing stop layer. Both the diamond or diamond like carbon film and the protective film are used as a hard mask so that a pattern is formed in a trench that has metallic features. The protective film protects the diamond or diamond like carbon polishing stop layer during a pattern forming process. After a conductive metal layer is adhered, the substrate is polished, and redundant conducting materials and the topography are removed.
Abstract:
PROBLEM TO BE SOLVED: To provide a phase change memory element connected to the edge part of a thin film electrode, and to provide a method of manufacturing the same. SOLUTION: A phase change memory (PCM) cell structure includes a first electrode 60E, a phase change element 70E, and a second electrode 80E, wherein the phase change element 70E is inserted between the first electrode 60E and the second electrode 80E, and only an edge part 75 of the first electrode 60E is contacted with the phase change element 70E, thereby reducing a contact area between the phase change element 70E and the first electrode 60E to increase a current density flowing through the phase change element 70E and effectively cause a phase change by a first programming power by a comparatively small current. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method, as well as structure, for manufacturing a dynamic random access memory device and a related transistor at the same time. SOLUTION: A channel region and a capacitor opening are formed in a substrate by this method. Then a capacitor conductor is allowed to stick to the capacitor opening. A single insulator layer is formed above the channel region and the capacitor conductor at the same time. The single insulator layer contains a capacitor node dielectrics above the capacitor conductor while a gate dielectrics above the channel region. A single conductor layer is patterned above the single insulator layer at the same time. The single conductor layer contains a gate conductor above the gate dielectrics while a ground plate above the capacitor node dielectrics. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a more simplified substitutional method of the conventional damascene approach. SOLUTION: The cloisonne approach includes a step of coating a semiconductor substrate with a photosensitive polymer, such as pyrrole having a silver salt, aniline, etc. A conductive polymer is exposed to a wet developing solution, by using standard photolithography and the resists developing method and only conductive polymer wires are left on a substrate by removing part of the exposed conductive polymer region. Then an insulating dielectric layer is adhered to the whole structure, and conductive polymer wires are produced by planarizing an insulator by the chemical mechanical polishing (CMP). Another embodiment of this invention includes a method and structure for a self- planarizing interconnecting material containing the conductive polymer. Consequently, the number of treating steps can be reduced, as compared with the conventional technology.
Abstract:
PROBLEM TO BE SOLVED: To provide an NMOS structure and its manufacturing method for solving a problem of junctional yield in a conventional NMOS drive circuit. SOLUTION: A drive circuit in N-channel metallic oxide film semiconductor(NMOS) includes a boost gate stack formed on a substrate and having source and drain formed in low density N-type implantation step, and an N-drive circuit joined with the boost gate stack.
Abstract:
PROBLEM TO BE SOLVED: To provide a structure and a process for incorporating air or another gas in a multi-layer chip as a permanent dielectric medium by supplying a CVD diamond as dielectrics in semi-sacrificial layer and in-layer dielectrics. SOLUTION: A CVD diamond is supplied as dielectrics in semi-sacrificial layer and in-layer dielectrics, and then a semi-sacrificial dielectrics is at least partially removed by isotropic oxygen etching. A disclosed one deformed example presents a eventual permanent CVD diamond sealing material for a gas dielectric medium to be confined in a chip.
Abstract:
A damascene wire and method of forming the wire. The method including: forming a mask layer on a top surface of a dielectric layer; forming an opening in the mask layer; forming a trench in the dielectric layer where the dielectric layer is not protected by the mask layer; recessing the sidewalls of the trench under the mask layer; forming a conformal conductive liner on all exposed surface of the trench and the mask layer; filling the trench with a core electrical conductor; removing portions of the conductive liner extending above the top surface of the dielectric layer and removing the mask layer; and forming a conductive cap on a top surface of the core conductor. The structure includes a core conductor clad in a conductive liner and a conductive capping layer in contact with the top surface of the core conductor that is not covered by the conductive liner.