Abstract:
PROBLEM TO BE SOLVED: To prevent a product from warping and twisting due to difference of thermal expansion coefficients.SOLUTION: A printed wiring board includes: a wiring through-hole part 5 that includes a wiring through hole 5A formed across the thickness of a surface part 2A of a base material 2 and that uses an insulation material 6B having a thermal expansion coefficient different from the thermal expansion coefficient of the base material 2; and a heat expansion adjustment part 6 that includes a lower hole 6A formed in the surface part 2A of the base material 2 and that is formed by filling the lower hole 6A with the insulation material 6B. The heat expansion adjustment part 6 is arranged in cells 20, which are defined in the surface part 2A of the base material 2, in accordance with an arrangement location of the wiring through-hole part 5 in the cells 20 so that a difference of thermal expansion coefficients in vertical and horizontal directions in the cell 20 is minimum.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a radiation detector capable of improving a yield of a product in a production process, and a radiation detector.SOLUTION: A method for producing a radiation detector 1 comprises; a substrate preparation process for preparing a substrate 20 which has a wiring pattern 200 and a first connecting member provided on the surface of the wiring pattern 200; a coating process for partially coating a second connecting member on the substrate 20; and a temporary fixing process for temporarily fixing a semiconductor element 10 capable of detecting a radiation through the second connecting member on the substrate 20 by arranging the semiconductor element 10 on the substrate 20 so as to harden the second connecting member.
Abstract:
PROBLEM TO BE SOLVED: To enable orientation of a tip of a probe element without changing the position of a probe card. SOLUTION: A probe card assembly 500 includes: a probe card 502; a space converter having a contact structure (probe element) 524, which is a space converter 506; and an interposer 504 disposed between the space converter and the probe card. Mechanisms 532, 536, 538, 546 are disclosed, which are suitable for determining the degree of adjustment by "stacking" the space converter and the interposer, and by adjusting orientation of the space converter. A probe is allowed to abut on many die sites on a semiconductor wafer 508 easily by using the disclosed technique, and the probe element can be arrayed to optimize probe abutment on the whole wafer. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a solder bump that conductively connects a semiconductor chip with a substrate with high connection reliability, to provide a semiconductor chip including the solder bump, a method of manufacturing the semiconductor chip, a conductive connection structure, and to provide a method of manufacturing the conductive connection structure. SOLUTION: Filler 5 is contained in a solder bump 6 and a solder joint 17 which connect a connection electrode 3 of a semiconductor chip 2 and a substrate 11, and the filler has a larger concentration on the side of the connection electrode 3 than on the filler concentration at the substrate 11 side in the solder joint 17. The filler 5 in the solder joint 17 is segregated in a position near the connection electrode 3 of the semiconductor chip 2, where stresses are concentrated. Accordingly, in the cooling solidification of solder, the shrinkage of the solder joint 17 near the connection electrode 3 of the semiconductor chip 2 is reduced by the filler 5 and the generated stress is reduced on the periphery of the connection electrode 3, thereby preventing the occurrence of cracks near the joint. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed wiring board capable of suppressing the occurrence of stress. SOLUTION: A printed wiring board 11 includes an insulating layer 28 formed of an insulating material. The insulating layer 28 has a front surface formed with a conductive wiring layer 29. The conductive wiring layer 29 has a conductor 42 and a filler 44 which is embedded in the conductor 42 and has a smaller coefficient of thermal expansion than that of the conductor 42. In such a printed wiring board, the filler 44 has a smaller coefficient of thermal expansion than that of the conductor 42. As a result, the coefficient of thermal expansion of the conductive wiring layer 29 is kept smaller than that of a conductive wiring layer formed of, for example, a single conductor, thus making it possible to suppress the stress occurring in the printed wiring board 11. COPYRIGHT: (C)2010,JPO&INPIT