Abstract:
A flexible flat cable assembly, which is adapted to form a low profile interconnection between two electrical circuit members, each having a row of closely spaced apart conductive traces (18). The cable (2) comprises a row of traces (18), with an insulating polymeric film (20) overlying each side of the row. Also, the row is exposed at each end of the jumper cable, and the exposed end portion is covered by a layer of an anisotropically conductive adhesive (22). The cable is adapted to electrically join a flat display panel (220) to a printed circuit board (222), with the jumper cable (210) forming the interconnection between the conductors (221) on the display panel with the conductors on the circuit board. A jumper cable assembly is also disclosed, which includes surface mountable electrical components (224) which are electrically connected and mechanically secured to the traces (230) of the jumper cable assembly by means of an anisotropically conductive adhesive (22). A cable assembly especially adapted for tapping is also disclosed.
Abstract:
PROBLEM TO BE SOLVED: To prevent a metal board from being rubbed by a white resist layer even when metal base circuit boards are managed in a stacked manner.SOLUTION: A metal base circuit board 1 comprises: a circuit part 7 provided on a metal board 3 via an insulation layer 5; and a white resist layer 9 including an inorganic filler which forms soldering lands 9a and 9b of an LED on the circuit part 7 so as to cover the insulation layer 5 and the circuit part 7 on the metal board 3. Dummy circuits 11a and 11b for maintaining height at a position spaced away from the circuit part 7 are formed between the white resist layer 9 and the insulation layer 5 on the metal board 3 side. On the surface of the white resist layer 9 whose height is maintained by the dummy circuits 11a and 11b, symbol patterns 13a and 13b constituting a board uppermost portion are formed of symbol ink.
Abstract:
PROBLEM TO BE SOLVED: To provide an inexpensive probe card which facilitates an alignment even though an adapter board system is employed, and can prevent deterioration of the contact between a probe and an electrode pad. SOLUTION: The adapter board 1 includes a package substrate 300 having a first surface 1a and a second surface 1b and further including a board 301 having wirings 402, 902 formed therein, pads 303, 903 formed on the first surface 1a, and pads 904, 905 formed on the second surface 1b, an insulating resin layer 305 joined to the first surface 1a, through-holes 308 formed in the positions corresponding to the pads 303, 903 in the insulating resin layer 305, vias 306 formed in the through-holes 308, and pads 307 covering the through-holes 308, wherein the pads 303 are electrically coupled to the pads 904 through the wirings 402, and the pads 307 are electrically coupled to the pads 303 through the vias 306. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device capable of suppressing the occurrence of a crack. SOLUTION: This semiconductor device 1 includes a multilayer wiring board 4 and a semiconductor chip 2 mounted on the multilayer wiring board 4. Electrode pads 3 of the semiconductor chip 2 comprise first electrode pads 3a arranged adjacently to respective corners of a rear surface 2a of the semiconductor chip 2, and second electrode pads 3b other than them. Connecting pads 5 on the multilayer wiring board 4 comprise first connecting pads 5a connected to the first electrode pads 3a through bumps 7, and second connecting pads 5b connected to the second electrode pads 3b through the bumps 7. The first connecting pads 5a are supported by a first insulating region 41 formed of a thermoplastic resin, and the second connection pads 5b are supported by a second insulating region 42 formed of a thermosetting resin. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit board capable of sufficiently securing connection strength and connection reliability when mounting a surface mounted device, and to provide a mounting structure of the surface mounted device using the printed circuit board. SOLUTION: A BGA package 3 as a surface mounted device has a plurality of solder balls 3a arranged in alignment and the printed circuit board 2 has a plurality of mounting pads 4 respectively corresponding to the plurality of solder balls 3a. The BGA package 3 is mounted on the printed circuit board 2 when being joined to the mounting pads 4 on the printed circuit board 2 due to melting of the solder balls 3. A recessed via hole 10 is formed in each mounting pad 4 having a circular surface shape and a part of the solder ball 3a is get into the recessed via hole 10. Wherein, a center position of the recessed via hole 10 is separated from the center O of the mounting pad 4 by a diameter dimension and more of the recessed via hole 10. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wiring board capable of extending the allowable error range of alignment accuracy in the package of a packaging terminal and an external circuit, to provide its manufacturing method, and to provide a display device. SOLUTION: The wiring board includes a plurality of wiring lines 2a provided on a board 1 and a plurality of packaging terminals 6 respectively provided on the plurality of wiring lines 2a and forming a plurality of rows in a zigzag shape. The packaging terminal 6 includes a first conductive film 2 of the same layer as the wiring line 2a, an insulating film 4 covering the wiring line 2a and the first conductive film 2 and having an aperture part 5 on the first conductive film 2 and an upper layer conductive film 7 electrically connected to the first conductive film via the aperture part 5. The insulating film 4 has a thick film part provided outside the region where the plurality of packaging terminals 6 forming the plurality of rows in the zigzag shape are provided and a thin film part 5a provided in a region adjacent to the aperture part 5 in the row direction in the zigzag shape and having film thickness thinner than that of the thick film part. COPYRIGHT: (C)2009,JPO&INPIT