摘要:
PROBLEM TO BE SOLVED: To provide a forming method of a conductive film superior in light transmission and electric conductivity, and easy to be manufactured, and a conductive film formed by that forming method. SOLUTION: The forming method of a conductive film comprises a stage in which a carbon nanotube is pre-treated by at least one of cutting by an ultrasonic wave and a chemical reaction with an acid, a stage in which the carbon nanotube is dispersed in a solvent, a stage in which a metal wire is mixed in a carbon nanotube dispersion liquid, and a stage in which the carbon nanotube dispersion liquid mixed with the metal wire is coated on a substrate to form an electrode layer. COPYRIGHT: (C)2011,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a thin film adhesion strength evaluation method and an evaluation device capable of evaluating qualitatively and quantitatively thin film adhesion strength, which has been difficult to be evaluated by a conventional method. SOLUTION: This thin film adhesion strength evaluation method has processes for: applying ultrasonic vibration by allowing an ultrasonic vibration needle to abut on an edge part or its periphery in the face direction of the thin film formed on a substrate; detecting generation of exfoliation at the edge part of the thin film after application of the ultrasonic vibration; and evaluating thin film adhesion strength onto the substrate by a generation amount of exfoliation. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method of mounting solder balls that can efficiently and accurately mount solder balls at the spcecified position on a work, and to provide a mounting apparatus. SOLUTION: The periphery of a mask 3 is made higher than a formation area of a ball holding holes 3a, and a work 1 is placed under the ball holding hole 3a of the mask 3. The ball holding hole 3a and an electrode of the work 1 are positioned, and a solder ball B is put on the mask 3, and then the mask 3 is vibrated in that state. The solder ball B is moved on the surface of the mask 3, and it is dropped into the ball holding hole 3a. The periphery of the mask 3 is made lower than the ball holding hole 3a, and the excessive part of the solder ball B is collected from the mask 3. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a printed-circuit board connection method high in connection reliability without causing the problem of a short circuit, even if a pitch is minute between joints. SOLUTION: The printed-circuit board connection method is used for connecting printed-circuit boards 10 (PCBs) the each other having metal wiring 2 or for connecting the printed-circuit board (PCB) having the metal wirings with metal lead wires. The method includes a step for performing thermocompression bonding on an adhesion film 30 at the joints 3, 33. The adhesion film is composed of a thermoplastic resin and an adhesive composition including organic particles, so that viscosity is reduced accompanied by the increase of a pressurizing force of the thermocompression bonding at a temperature of 100-250°C. COPYRIGHT: (C)2007,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a wire bonding structure which can improve the reliability of the electric connection of a bonding pad to a bonding wire by reducing the tilt of the bonding pad to a land. SOLUTION: The wire bonding structure includes the bonding pad 14 soldered to the land 11 of a substrate 10, and the bonding wire 15 bonded to this bonding pad 14. A solder 13 is applied to the land 11 in a cross shape, the bonding pad 14 is soldered to the solder 13 of the cross shape, and the distal end 15a of the bonding wire 15 is bonded to this bonding pad 14. COPYRIGHT: (C)2005,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To easily and reliably package electronic components on a substrate at a low temperature without requiring to heat the electronic components up to a temperature which melts the solder bumps, enhance the reliability of a packaged product, and easily package the electronic components. SOLUTION: In a method for packaging electronic components having solder bump, a flux fill 30 having a function of flux and a function of an underfill resin is applied on the surface of a substrate 12 formed with an electrode 14. A solder bump 20 formed in an electronic component 10 is joined to the electrode 14, and also an underfill part is filled with the flux fill 30, and the electronic component 10 is packaged in the substrate 12. The solder bump 20 formed in the electronic component 10 is brought into contact with the electrode 14, and an ultrasonic oscillation energy is made to act on a contact part between the solder bump 20 and the electrode 14, whereby the solder bump 20 is joined to the electrode 14. COPYRIGHT: (C)2005,JPO&NCIPI