Abstract:
PROBLEM TO BE SOLVED: To provide a photoelectric conversion device which effectively prevents light from being diffused, and also to provide its manufacturing method, and an optical information processing device. SOLUTION: The photoelectric conversion device 1 is equipped with: photoelectric conversion elements 2: and an element base 3 where the photoelectric conversion elements 2 are provided, silicon lenses 4 are joined to the surface of the element base 3 opposite to its other surface where the photoelectric conversion elements 2 are provided, and the optical paths of the optical beam components of the outgoing light or incident light of the photoelectric conversion elements 2 are changed by the lenses 4. The method of manufacturing the photoelectric conversion device 1 comprises processes of: joining silicon bases 4a to the element base 3, providing the photoelectric conversion elements 2 onto the element base 3; and forming the lenses 4 by etching the silicon bases 4a on the surface of the element base 3 opposite to its other surface where the photoelectric conversion elements 2 are provided. An optical information processing device is composed of the photoelectric conversion device 1, an optical waveguide unit, and drive elements which drive the photoelectric conversion elements 2. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical waveguide module capable of reducing an optical coupling loss, and its mounting structure. SOLUTION: In the optical waveguide module 1, an optical waveguide device 2 in which a first semiconductor layer 7, an insulation layer 8 and a second semiconductor layer 9 are laminated in order and an optical waveguide layer 10 is formed between the first semiconductor layer 7 and the second semiconductor layer 9, and a photoelectric conversion element (light incident means 3 such as a light emitting element, light receiving means 4 such as a light receiving element) are arranged on an interposer 5 made of ceramic etc. In the mounting structure of the optical waveguide module, the optical waveguide module 1 is mounted on a mounted substrate 6 via the interposer 5. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To facilitate reduction deposition of cobalt by preventing oxidation of CoWP electroless plating liquid due to dissolved oxygen thereby sustaining a stabilized structure by a Co(III) complex, and to prolong the lifetime of the electroless plating liquid. SOLUTION: The process for fabricating a semiconductor device comprises a step for selectively forming a barrier film 32, which prevents spread of copper through electroless plating, only on a second interconnect line 25 formed of copper or a copper alloy on a substrate. The electroless plating (e.g. CoWP electroless plating) employs plating solution from which dissolved oxygen is removed and preserved in an atmosphere of nitrogen or inert gas. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electropolishing device which stabilizes the characteristics of an electropolishing liquid and reduces a running cost, and to provide a method for recycling the electropolishing liquid. SOLUTION: This electropolishing device comprises an electropolishing section 1 for bringing the electropolishing liquid into contact with a layer to be treated to electropolish it, an electropolishing liquid-recycling section 2 for collecting the liquid which has been used for electropolishing in and discharged from the electropolishing section 1, an impurities-eliminating section 3, and regenerating chemicals-supplying sections (4, 5 and 6) for supplying the regenerating chemicals to regenerate the used liquid. The recycling method employs them. Here, the device has a configuration of returning the electropolishing liquid regenerated in the electropolishing liquid-regenerating section 2 as described above, to the electropolishing section 1 to reuse it. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To realize microfabrication of copper trench interconnect lines subsequent to 0.1 μm generation by preventing crevice corrosion of copper between a copper line and a barrier layer thereby employing a tungsten based barrier layer or a titanium based barrier layer which can be deposited with good coverage by CVD. SOLUTION: Anticorrosives for preventing corrosion of copper is added to abrasive slurry being used in a polishing process for removing excess copper 14 on an insulating film 11 after wiring trenches 12 made in the insulating film 11 have been filled with the copper 14 through a barrier layer 13 composed of tungsten, a tungsten compound, titanium or a titanium compound. The abrasive slurry is used for forming trench interconnect lines of a semiconductor device. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a polishing method and a polishing apparatus for properly controlling the electric potential of a working electrode and realizing stable electrolytic polishing with high precision, and to provide a method of producing a semiconductor device using them. SOLUTION: In the polishing method, a substrate with a metallic film formed thereon and a counter electrode are oppositely arranged in an electrolytic solution, and the metallic film is energized via the electrolytic solution on the basis of the electric potential of the metallic film relative to a reference electrode. In the polishing apparatus, a substrate with a metallic film formed thereon, a counter electrode oppositely arranged at prescribed intervals with the substrate and a reference electrode having an electric potential which is the standard to that of the metallic film are arranged in an electrolytic solution, and the metallic film is energized via the electrolytic solution on the basis of the electric potential of the metallic film relative to the reference electrode. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a polishing method with high accuracy to remove an excess metal film easily and efficiently when the metal film is flattened through polishing, and provide a polishing apparatus used for the same, and provide a method for producing a semiconductor device using these polishing method and apparatus. SOLUTION: This polishing method comprises the steps of: disposing a substrate 17 formed with the metal film which is opposed to a counter electrode 15 in electrolytic solution; energizing the metal film through electrolytic solution E; and polishing the metal film face with a hard pud. The polishing apparatus 11 polishes the metal film formed on the substrate 17 in electrolytic solution. This polishing apparatus 11 comprises the counter electrode 15 to be opposed to the substrate 17, a power supply 12 to apply a voltage between the substrate 17 to be an anode and the counter electrode 15 to be a cathode, and the polishing pud 14 which polishes the metal film by sliding on the substrate 15. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To energize an object to be polished to a polishing end point with stable current density distribution and enable the use of a conventional plating apparatus, cleaning apparatus or the like and the execution of production process flow. SOLUTION: A substrate 1 formed with a metal film 2 and a counter electrode 3 are opposedly arranged at a predetermined interval in electrolyte. An electric current is applied to the metal film 2 from an anode 4 which is not in contact with the metal film 2 through electrolyte, and this metal film 2 is electrolytically polished and wiped through sliding of a pud on the metal film 2 while the substrate 1 is being rotated. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To obtain electrolytically polished surface of a copper plating film exhibiting excellent surface smoothness by eliminating current concentration due to an additive (especially, brightener) remaining or deposited with high concentration at a crystal grain boundary triple point or a wiring trench part on the surface layer of the copper plating film and further suppressing an elution. SOLUTION: The method for producing a metal film comprises a step for forming a metal plating film (copper plating film 15) using a plating liquid added with a plating additive for suppressing generation of void, bottom up fill and over fill, and a step for polishing the metal plating film electrolytically using an electrolytic polishing liquid added with a polishing additive reacting on or bonding to the plating additive component contained in the surface layer of the copper plating film or deposited thereon. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To improve the quality of copper wiring and at the same time reliability in the copper wiring by accurately detecting an end point when a copper film is electrolytically polished in the formation of copper groove wiring. SOLUTION: In the polishing method, a metal film 32 formed on the surface of a wafer 31 is electrolytically polished so that a recess (not illustrated) formed on the surface of the wafer 31 is filled, and the end point of the electrolytic polishing of the metal film 32 is determined according to a change in current waveform obtained when the metal film 32 is electrolytically polished. The electrolytic polishing device achieves the polishing method, and has a current detector 22 for detecting the current waveform obtained when the metal film 32 is electrolytically polished and an end point determination section 23 for determining the electrolytic polishing end point of the metal film 32 according to the change in current obtained by the current detector 22. COPYRIGHT: (C)2003,JPO