摘要:
PROBLEM TO BE SOLVED: To provide a liquid crystal display device containing a microelectronic element chip containing a hybrid gold bump where foreign matter is not generated in a probe chip at EDS test, a package containing such a microelectronic element chip and such a microelectronic element chip, and to further provide a method of manufacturing such a microelectronic element chip. SOLUTION: The microelectronic element chip containing the hybrid gold bump where the foreign matter is not generated in the probe chip at EDS test is provided, and includes a chip pad in which the microelectronic element chip is connected to the microelectronic element formed on a substrate and an electric contact is formed between the microelectronic element and the outside of the chip, and a bump which is formed on the chip pad and is composed of a composite film of at least two layers or more. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide an improved lead frame by which a wire bonding property of an internal lead and a soldering affinity of an external lead are progressed, and to provide a method of manufacturing the lead frame. SOLUTION: This invention relates to the lead frame provided with: a plurality of internal leads mutually formed at a predetermined interval; and a plurality of external leads each extending in the longitudinal direction of the internal lead, one end portion thereof being combined with the internal lead in the overlapping state and the other end portion thereof being interconnected by a supporting portion, and the method of manufacturing the lead frame. Thereby, the wire bonding property of the internal lead and the soldering affinity of the external lead are progressed, and a failure of a product is prevented although a product yield improves. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide a method for forming a re-wiring bump, a semiconductor chip and mounting structure using the method. SOLUTION: The bump forming method makes the mounting of an LDI chip easy and can enlarge a bump area with the same pad pitch even if an upper portion of a bump 43 is flat in order to minimize the area of a pad 33 in the chip, and the chip and its mounting structure use the method. Thereby, a pad area at the edge of a conventional chip can be minimized, the bump 43 is formed on a flat portion inside the chip, and an electrical connection between the pad 33 and the bump 43 is attained with a re-wiring metal film. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide a semiconductor device such as an IC chip or the like, a capacitor which can reliably be arranged between wiring boards composed of insulating resins mainly, the semiconductor device with a capacitor, the wiring board with the capacitor and an electronic unit equipped with the semiconductor device, the capacitor and the wiring board. SOLUTION: The capacitor comprises a capacitor body v having a surface 2 mounting the semiconductor device and the back 3 mounted on the first main surface of the wiring board; an internal electrode 10 contained in the capacitor body v; and a via conductor 7 (7a, 7b) which is penetrated between the surface 2 and the back 3 in the capacitor body v and connected to the internal electrode 10. The capacitor body v is a capacitor 1a, 1b or 1c which contains a dielectric layer u1 of a low coefficient of thermal expansion located on at least the side of the surface 2 and a high dielectric layer u2 which is located near to the back 3 of the dielectric layer u1 at a high coefficient of thermal expansion and has a higher dielectric constant than the dielectric layer u1. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To provide a thin and small optical semiconductor device exhibiting excellent mechanical strength and moisture resistance. SOLUTION: In the optical semiconductor device 10A comprising an optical semiconductor element 14 having a light receiving part or a light emitting part and sealed with sealing resin 13, a coating layer 12 of a transparent material covering the surface of the optical semiconductor element 14 is exposed from the surface of the sealing resin 13. As compared with a conventional one entirely sealed with sealing resin, the sealing resin 13 can be formed thin and the entire device can be made thinner. Furthermore, the optical semiconductor device 10A employs sealing resin mixed with a filler. Consequently, an optical semiconductor device exhibiting excellent mechanical strength and moisture resistance can be constituted. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
A method for preparing a copper pad surface for electrical connection that has superior diffusion barrier and adhesion properties is provided. In the method, a copper pad surface is first provided that has been cleaned by an acid solution, a protection layer of a phosphorus or boron-containing metal alloy is then deposited on the copper pad surface, and then an adhesion layer of a noble metal is deposited on top of the protection layer. The protection layer may be a single layer, or two or more layers intimately joined together formed of a phosphorus or boron-containing metal alloy such as Ni-P, Co-P, Co-W-P, Co-Sn-P, Ni-W-P, Co-B, Ni-B, Co-Sn-B, Co-W-B and Ni-W-B to a thickness between about 1,000 Å and about 10,000 Å. The adhesion layer can be formed of a noble metal such as Au, Pt, Pd and Ag to a thickness between about 500 Å and about 4,000 Å.