摘要:
A circuit board includes a wiring board which includes an insulative board having a wiring pattern on one surface thereof, a connection hole being formed in the insulative board such that the connection hole reaches the wiring pattern, a conductive bump, which is formed by growing a plating on the wiring pattern, being embedded in the connection hole, and the conductive bump serves as a connection to a wiring pattern which is intimately attached to the other surface of the insulative board.
摘要:
An apparatus for conveying a lead frame mounting semiconductor pellets comprises a guide path for guiding the lead frame, and a feed member. The feed member is moved by a solenoid mechanism from a first position where the feed member is separated from the lead frame to a second position where the feed member engages with the lead frame. The feed member positioned in the second position is moved by a X-Y table from an initial position to a forward position along the guide path, whereby the lead frame is conveyed along the guide path by a predetermined distance.
摘要:
A plurality of protective resistors can be easily inserted between circuit forming elements, and opposite ends of each protective resistor can be properly press-contacted to each circuit forming element. The protective resistor can be easily replaced when broken. A resistor array board comprises a porous plate having a plurality of through-holes arranged in array and opening at opposite surfaces thereof; and a plurality of protective resistors removably loosely inserted into the through-holes, respectively. Each of the protective resistors are resiliently retained by an electrically conductive spring element, and opposite ends of each of the protective resistors are press-contacted with the circuit forming elements which are arranged in opposing relation on surfaces of the porous plates.
摘要:
A system comprising a detector for detecting a shift of a optical pattern formed on a semiconductor pellet at a distance from the datum point set on both sides of the pattern and giving a signal indicative of said shift, and a bonding device for wire-bonding said pellet with the shift compensated which has been shifted correspondingly to the shift of the pellet.
摘要:
An IC package is provided that has a flexible wiring sheet, including an upper portion, a lower portion and a side portion which is wound around a base member over an upper surface, side surfaces and a lower surface of the base member. An IC is loaded on an upper surface of the upper flexible wiring sheet covering the upper surface of the base member. The IC is connected to an electrode provided on an upper lead pattern portion laid along the upper surface of the flexible wiring sheet. The lead pattern is extended from the upper flexible wiring sheet to the lower flexible wiring sheet via the side surfaces of the flexible wiring sheet covering side surfaces of the base member. An electrode to be connected with an object is arranged on the lower lead pattern portion which is formed on the lower flexible wiring sheet, and overall the IC or an IC connection portion is sealed on the upper surface of the upper flexible wiring sheet.
摘要:
A method and apparatus for detecting defects in a pattern are disclosed. The defect detecting method is comprised of a step of dark-field illuminating a patterned object with a directionality and a step for detecting only the defect component by erasing the pattern component in a pattern image formed by the dark-field illumination. The apparatus comprises an illuminating device for dark-field illuminating a patterned object with parallel rays, an image pick-up device for picking up a pattern image, which is disposed just above the pattern, and a data processing circuit for processing the picked up image signal to detect a defect.
摘要:
Image data of lead terminals and a chip element provided on a circuit board are stored on a video memory. Part of the video data stored in the video memory is read out and stored in a RAM by a microprocessor to be compared with reference pattern data stored in an external memory. The position of the chip element is checked in this way by having reference to the lead terminals.
摘要:
According to the present method of positioning a semiconductor member by examining it, an optical image of the semiconductor member is focussed on a photoelectric conversion face formed by having a plurality of photoelectric conversion elements arranged thereon in the form of a matrix. By means of the photoelectric conversion elements spotlighted by said optical image, the distributions of the spotlighted elements and the remaining non-spotlighted elements are examined through scanning operation. By using the examination results, a table having said semiconductor members loaded thereon is so moved as to permit one of them to fall under the photoelectric conversion face, thereby to inspect for positioning examination of the semiconductor member the presence or absence of a defect-indicating mark affixed thereto and examine the qualification or non-qualification of the member in terms of outer dimension, in terms of the position taken after moved, and in terms of whether or not the semiconductor member can be subjected to correction of the position, or is damaged, or is cracked, or is stained or is partially oversized. Thus, according to the present method, only each qualified one of the semiconductor members can be positioned precisely in a prescribed position, and a die bonding apparatus of the invention is based on the using of the above method for purpose of positioning the semiconductor member by examining it.
摘要:
A contact structure of a lead in which a contact structure having a lead and a bump made of suitable metals, respectively, can be formed easily and the bump and the lead can be soundly connected together in terms of electricity and strength. The contact structure of the lead comprises a lead 12 formed by etching a conductive foil 11, and a bump 5 formed by electric casting by means of plating. The bump 5 and the lead 12 are formed of different metals, respectively, and the bump 5 is connected to a surface of the lead 12 through a conductive connecting material 10. The lead 12 is intimately contacted at a surface, on which the bump 5 is disposed, with a first main surface 15 of a holeless insulative sheet 8. A basal portion of the bump 5 is forcibly pierced into and extended all the way through the thickness of a material of the holeless insulative sheet 8 and a side surface of the basal portion of the bump 5 is fusion-adhered to an inner wall surface of the through-hole 17. A distal portion of the bump 5 is projected from a second main surface 16 of the insulative sheet 8.
摘要:
A wiring board structure has an insulating base having at least one projection located thereon, wherein the insulating base and the at least one projection are integrally formed from a same piece of insulating material. The wiring board structure also has at least one lead located on the insulating base, wherein a part of the at least one lead covers the at least one projection to form at least one conductive bump.