Abstract:
PROBLEM TO BE SOLVED: To increase reliability of a semiconductor device by improving connection reliability of a passive component. SOLUTION: A first through-hole 6c is formed in the first electrode part 6b of a first plate-like lead 6, and a second through-hole 7c is formed in the second electrode part 7b of a second plate-like lead 7. As a result, at the first electrode part 6b of the first plate-like lead 6, one external terminal 5b of the passive component 5 can be connected to the first electrode parts 6b on both sides of the first through-hole 6c while striding over the first through-hole 6c. Also, at the second electrode part 7b of the second plate-like lead 7, the other external terminal 5b of the passive component 5 can be connected to the second electrode parts 7b on both sides of the second through-hole 7c while striding over the second through-hole 7c. Accordingly, at a central portions both in the longitudinal and width directions of the passive component 5, the passive component 5 is surrounded by sealing members 12. As a result, thermal stress applied to bonding materials 13 such as solder can be reduced, and the reliability of the semiconductor device (semiconductor package 1) is improved. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device wherein a light axis of an LED is directed in a required direction without molding a substrate in a complicated shape. SOLUTION: With the lighting device equipped with an LED 1, and a substrate 2 which the LED 1 is mounted on, the LED 1 is mounted on the substrate 2 through a conductive pedestal 3. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method of soldering an electronic component improving the wettability of solder while suppressing the residual quantity of voids, and to provide the electronic component. SOLUTION: In the method for soldering the electronic component, the upper parts of board electrodes 36a to 36c for a printed-circuit board 30 are supplied with solder 56a to 56c. In the method for soldering the electronic component, the electronic component 10 is loaded on the printed-circuit board 30 under the state supporting one side by a solder chip 70 having a melting property by a heat and directly supporting an opposed one side to the one side to the printed-circuit board 30 in the electronic component 10 between the board electrodes 36a to 36c and component electrodes 16a to 16c of the electronic component 10 mounted on the board electrodes 36a to 36c, and solder 56a to 56c and the solder chip 70 are heated. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid jet head improving electrical and mechanical adhesion force between a wiring board and an electrode and reducing cost, and a liquid jet apparatus and an actuator device. SOLUTION: The liquid jet head includes a passage-forming member 22 provided with a pressure generating chamber communicating with a nozzle opening for jetting liquid; a piezoelectric element provided on one face side of the passage-forming member 22 to cause pressure change in the pressure generating chamber; a terminal part 46 provided on the one face side of the passage forming member and conductive to the piezoelectric element; the wiring board 50 provided with a wiring layer 51 supplying a driving signal for driving the piezoelectric element; and an adhesive layer 55 formed of an anisotropic conductive material to make the wiring layer 51 and the terminal part 46 conductive to each other and to join the passage-forming member 22 to the wiring board 50. At least one of the faces of the passage-forming member 22 and wiring board 50 in an area provided with the adhesive layer 55 includes a gap layer 56 that is electrically discontinuous with the terminal part 46 and the wiring layer 51. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic circuit including a capacitor for cutting a DC component capable of cutting the DC component while suppressing deterioration of frequency characteristics over a wide band, and to provide its manufacturing method. SOLUTION: The electronic circuit includes a first capacitor 60 for cutting the DC component of a low frequency band when a frequency band is two-divided into the low frequency band and a high frequency band, and a plurality of second capacitors 20 and 30 provided for each of narrow bands for cutting the DC component of each narrow band when the high frequency band is further divided into the narrow bands. The first capacitor 60 and the plurality of second capacitors 20 and 30 are connected respectively in parallel. COPYRIGHT: (C)2006,JPO&NCIPI