Abstract:
An optical module which can achieve miniaturization, high performance and cost reduction is provided. The optical module includes a photoelectric component, a high-speed signal processing part which processes a high-speed signal photoelectrically converted by the photoelectric component, and a low-speed signal processing part which processes a low-speed signal. The high-speed signal processing part and the low-speed signal processing part are overlapped with each other in a vertical direction and electrically connected to each other.
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic apparatus assembled by temperature-hierarchical bonding using a solder capable of maintaining a bonding strength at high temperature, a new solder paste, a method of solder bonding, and a soldered joint structure. SOLUTION: A connection between a semiconductor device and a substrate is formed of metal balls made of Cu or the like and compounds formed of metal balls and Sn, and the metal balls are bonded together by the compounds. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic module that can fully radiate using its internal heating device, and its heat dissipation method. SOLUTION: The electronic module (190, 192) that can be connected with and disconnected from a system board (102) is equipped with a primary part (192) connected with the foregoing system board and secondary part (190) connected to the top of the primary part. The primary part (192) includes a heat dissipation device (120A) and printed circuit board (PCB) (104), and the primary side (168) of the PCB is connected with a processor (110), while the heat dissipation device (120A) extends between the processor (110) and the system board (102). The foregoing secondary part (190) has a power system board (130) that supplies power to the foregoing processor, and the power system board is located adjacent to the secondary side of the PCB (104) extending in parallel with the secondary side. The above-mentioned are the main features of this invention. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electrooptical device where a plurality of electronic components can be packaged on an FPC at low cost with high package density and good working efficiency and the FPC can be assembled in a less space, a flexible wiring board, and a method for manufacturing the electrooptical device. SOLUTION: A liquid crystal display 100 is constituted by connecting the flexible wiring board 104 having input/output terminals to a liquid crystal panel 116 constituted by arranging a TFD substrate 111 and a counter substrate 112 opposite to each other across a seal material 113 and interposing liquid crystal 114 as an electrooptical material in an internal space. Further, a circuit board 10 where a plurality of electronic components 5 needed to operate the liquid crystal display device 100 are mounted is packaged on the flexible wiring board 104. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic apparatus having novel solder connections, especially, one realizing solder connections at a high temperature side in a temperature hierarchical connection. SOLUTION: A connection part between a semiconductor device and a substrate is made of metal balls, such as Cu balls and a compound of Sn with the metal balls, and the metal balls are connected by the compound. A primary substrate having electronic components is mounted on a secondary substrate, such as a printed circuit board and a mother board, in the electronic apparatus. Connections between the electronic components and the primary substrate are established by reflowing a solder paste having the Cu balls and Sn solder balls. Connections between the primary substrate and the secondary substrate are established by reflowing a Sn-(2.0 to 3.5) mass% Ag-(0.5 to 1.0) mass% Cu solder. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic apparatus having novel solder connections, especially, one realizing solder connections at a high temperature side in a temperature hierarchical connection. SOLUTION: A connection part between a semiconductor device and a substrate is made of metal balls, such as Cu balls and a compound of Sn with the metal balls, and the metal balls are connected by the compound. A primary substrate having electronic components is mounted on a secondary substrate, such as a printed circuit board and a mother board, in the electronic apparatus. Connections between the electronic components and the primary substrate are established by reflowing a solder paste having the Cu balls and Sn solder balls. Connections between the primary substrate and the secondary substrate are established by reflowing a Sn-(2.0 to 3.5) mass% Ag-(0.5 to 1.0) mass% Cu solder. COPYRIGHT: (C)2005,JPO&NCIPI