Abstract:
PROBLEM TO BE SOLVED: To provide a laser beam machining method and apparatus capable of efficiently machining a hole that is superior in shape accuracy. SOLUTION: A cylindrical lens 50a and/or 50b for correcting deformation of the reflection area of a mirror 1a and/or 1b is arranged on the optical axis of a laser beam 20 and the converging position of X and Y components of the laser beam 20 is aligned with the optical axis direction. In place of the cylindrical lens, a reflection mirror having a curved reflection area may be used. As a method of aligning the converging position of the X and Y components of the laser beam 20 with the optical axis direction, both the X and Y components may be made to coincide with a design position Fa. As an alternative, one is not corrected and the other may be made to coincide with the uncorrected one. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device, and a method and an apparatus for manufacturing an electronic circuit, with which high reliability of electrical connection can be obtained, and which are capable of inexpensively supplying solder to a conventional semiconductor chip and a conventional circuit board, with stable and necessary minimum quantity for a semiconductor chip to be electrically connected, wherein the semiconductor chip tends to be miniaturized. SOLUTION: The method for manufacturing the electronic circuit includes a first step of placing solder particles 11 on a table 21 in a layered manner, a second step of sticking the solder particles 11 to bumps 5 of the semiconductor chip 1 by pressing the bumps 5 to the solder particles 11 placed on the table 21, and a third step of bonding the semiconductor chip 1 to the circuit board 4 using the solder particles 11 stuck on the bumps 5. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reflow furnace which efficiently combusts the flux component of an atmospheric gas, enables the temperature control of a heating chamber without using a special cooling means, and reduces the heating quantity of the heating chamber. SOLUTION: The reflow furnace comprises a means for transporting a circuit board having mounted electronic components; a heating chamber for heating the circuit board carried inside through an atmospheric gas to solder them; and an atmosphere purifier 60 having a means for taking out a part of the atmospheric gas containing a flux component gasified during soldering, a means for heating the taken atmospheric gas up to a desired temperature, an oxidation catalyst 64 for combusting the flux component contained in the heated atmospheric gas, a means 72 for controlling the oxygen concentration of the hot gas after the combustion process, and a means for returning the oxygen concentration-controlled hot gas to the heating chamber after the combustion process. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a surface treatment agent for a metal by which wettability of a solder against the surface of a metal conductive part is improved when an electronic device is soldered on the surface of the metal conductive part composing a circuit of a printed circuit board, and to provide a method for manufacturing the printed circuit board in which soldering is performed using a lead-free solder after a chemical film is formed on the surface of the metal conductive part by bringing the surface treatment agent into contact with the metal conductive part. SOLUTION: The metal finishing agent includes an imidazole compound and a gluconic acid compound as active elements. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reflow furnace which efficiently burns a flux component in an atmosphere gas, and can control the temperature of a heat chamber without using a specific cooling means to reduce heating in the heat chamber. SOLUTION: The reflow furnace includes a transfer means that transfers a circuit board with an electronic component mounted thereon, the heating chamber, in which the circuit board is transferred and is heated via the atmosphere gas to carry out soldering; a means that removes part of the atmosphere gas containing a flux component vaporized during the soldering; a means that heats the removed atmosphere gas to a desired temperature, and an atmosphere cleaning unit having an oxidation catalyst that causes a flux component contained in the heated atmosphere gas to burn; and a means that sends a high-temperature gas resulting from a burning process back to the heating chamber. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide display panel soldering equipment that improves the productivity of a display device, and to provide a method of soldering the display device using the same. SOLUTION: The display panel soldering equipment 700 includes a panel holding unit 100, rotating unit 200, and soldering unit 400. The panel holding unit holds a display panel 10. The rotating unit supports the panel holding unit, and rotates and moves the panel holding unit at a predetermined angle. The soldering unit is disposed at the position corresponding to the panel holding unit which is rotated and moved by the rotating unit, and solders a driving element 12 to the display panel held by the panel holding unit. In this manner, an operation that is manually soldered by a worker is performed through an automated display panel soldering equipment, so that the productivity of the display panel can be improved furthermore. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new soldering method capable of efficiently heating solder by utilizing a heat sink equipped onto a circuit board, when soldering an electronic component onto the circuit board. SOLUTION: As the circuit board 11, a cooling circuit board is used. In the cooling circuit board, a metal heat sink 15 having a refrigerant channel 15a is integrated with the backside of the ceramic substrate 14 having a metal circuit 13 on the surface. A semiconductor device 12 is arranged while a solder sheet 33 is interposed on the metal circuit 13, a weight 35 is placed on the semiconductor device 12, and the solder sheet 33 is heated while being pressed by the weight 35. When the solder sheet 33 is heated, a heated heating medium flows in the refrigerant channel 15a. After solder is fused, heating is stopped. After that, a cooling medium flows into the refrigerant channel 15a for cooling the circuit board 11 and the solder. COPYRIGHT: (C)2007,JPO&INPIT