Abstract:
PROBLEM TO BE SOLVED: To provide a multilayer printed wiring board having a high quality terminal part formed. SOLUTION: The multilayer printed wiring board 1 includes a flexible part 2 which is soft and can be bent for use, a rigid part 3 formed in connection with the flexible part 2 and more rigid than the flexible part 2, and the terminal part 4 formed at an end of the flexible part 2 in connection with the part 2. The rigid part 3 contains an insulative rigid layer 6. The terminal part 4 contains an insulative layer 8 made of the same material as that of the rigid layer 6, and also has a conductor layer 9 formed in a terminal pattern to serve as a connection terminal on the surface of the insulative layer 8. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed-circuit board which improves the adhesion between IC and the board by increasing the area of contact between them. SOLUTION: The printed-circuit board comprises an insulating layer 2 wherein a first circuit pattern 4 including at least one or more via lands 4a is embedded in the upper part so that it has the same surface as the upper surface, while a second circuit pattern 8 formed at a position corresponding to the via land 4a is embedded in the lower part so that it has the same surface as the lower surface, a solder resist layer 12 which is laminated on the insulating layer 2, a via hole 6 which is formed in the insulating layer 2 so as to connect electrically the via land 4a and the second circuit pattern 8, and a bump 10 which is formed in an integrated type on the second circuit pattern 8 so that it pierces the via hole 6 and the via land 4a, and is provided in projection on the upper surface of the insulating layer 2 so that it has a height above the solder resist layer 12. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device which actualize a power supply path having a low antiresonance impedance in several 10 MHz band, reduces a power supply noise, can obtain a low impedance in a low frequency band and an impedance profile with a low antiresonance impedance even in a middle frequency band, to actualize a low power supply noise and speed-up in the power supply path in a semiconductor chip. SOLUTION: The antiresonance impedance in the middle frequency band is reduced effectively while the low impedance is maintained by introducing a structure for making a resistance value high in the middle frequency band into parts such as power supply wirings and a capacitor mounting electrode in the semiconductor package 1, which have a relatively high resistance value by nature. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To measure the capacitance of wiring without providing a whole surface ground layer in a multilayer wiring portion inherent to each kind by providing an internal conductor layer in a base substrate. SOLUTION: A multilayer wiring portion 11 is formed on a ceramic substrate 10. The ceramic substrate 10 has an internal conductor layer 14 connected with an inspection pad 16. At a stage when a first conductor layer 12 is formed, capacitance is measured between the wiring pattern 22 of the first conductor layer and the inspection pad 16. On the other hand, the capacitance is calculated in case of a normal wiring pattern 22. A judgment is made whether the wiring pattern 22 is abnormal or not by comparing the measurement with a calculated value. Measurement and comparison are performed similarly for second through fifth conductor layers and then a judgment is made whether the wiring pattern 22 is abnormal or not for the three-dimensional wiring route. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a package board which satisfies requirements from the standpoint of manufacturing process by combining a reinforcing plate to enhance strength of a thin board. SOLUTION: The package board 200 is provided in which a circuit board 210, a reinforcing plate 240, and at least one conductive groove 250 are arranged. The reinforcing plate is so arranged that a first surface 240a contacts the circuit board, preventing warping of the circuit board. The reinforcing plate comprises an opening which corresponds to the first contact of the circuit board and is exposed in the opening. One end of the conductive groove is positioned in the opening and is electrically connected to the first connected, and the other end of the conductive groove is positioned at a second surface 240b of the reinforcing plate, forming a bonding pad. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor package which has superior high-frequency characteristics and can increase the area of an internal wiring pattern. SOLUTION: The semiconductor package is equipped with a multilayer printed wiring board 12, an IC chip mounted on its surface, and a plurality of bump terminals 16 mounted on the reverse surface of the multilayer printed wiring board 12. Each of the bump terminals 16 includes an insulating core 42 having a plane 40, and a conductive film 44 formed on a surface other than the plane 40. The end surface of the conductive film 44 appears annularly at the circumference of the insulating core 42, and is soldered to an annular connection pad 52 formed on the reverse surface of the multilayer printed wiring board 12. A via hole 36 is formed right above the bump terminal 16, and a clearance hole 34 that the via hole 36 runs through is formed in internal wiring patterns 28 and 30. The diameter of the clearance hole 34 is made smaller than the diameter of the bump terminal 16. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a wiring board whereon wiring patterns with excellent dimensional precision can be formed without causing a step difference to an insulation layer. SOLUTION: In the method of manufacturing the wiring board wherein two metallic base members 10, one-side faces of which are opposed to each other are adhered to each other, a multi-layered wiring board is formed to the other sides of the respective base members 10, then both the base members 10 are separated from each other and thereafter, the respective base members 10 are removed from the multi-layered wiring boards to manufacture the independent wireless boards, when the two base members 10 are adhered, a liquid mold release is coated or printed onto parts of the two base members 10 except circumference ridges of each one side, an adhesive resin sheet 11 is inserted between the two base members 10, and the circumference ridges of the base members 10 to which no mold release is adhered are adhered to and joined with each other. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a thin film capacitor capable of surely preventing a capacitor dielectric film from being reduced by hydrogen and water content, as well as a manufacturing method thereof, an electronic equipment using the same, and a circuit board. SOLUTION: The thin film capacitor comprises a capacitor device 20 which is formed on a support substrate 10 and comprises a first capacitor electrode 14, a capacitor dielectric film 16 formed on the first capacitor electrode, and a second capacitor electrode 18 formed on the capacitor dielectric film. It also comprises drawn-out electrodes 26a and 26b consisting of a conductive barrier film that prevents diffusion of hydrogen or water content and is drawn out of the first capacitor electrode or second capacitor electrode, and external connection electrodes 34a and 34b connected to the drawn-out electrodes. COPYRIGHT: (C)2007,JPO&INPIT