摘要:
The invention provides processes for bonding a flip chip to a substrate in a manner that maximizes reliability of the bonding operation. Electrically conductive polymer bumps are formed on bond pads of a flip chip and the flip chip polymer bumps are at least partially hardened. Electrically conductive polymer bumps are formed on bond pads of a substrate, and a layer of electrically insulating adhesive paste is then applied on the substrate, covering the substrate polymer bumps with the adhesive. The bond pads of the flip chip are then aligned with the bond pads of the substrate and the at least partially hardened flip chip polymer bumps are then pushed through the substrate adhesive and at least partially into the substrate polymer bumps. In a further method, electrically conductive polymer bumps are formed on bond pads of a flip chip and the flip chip polymer bumps are at least partially hardened. A layer of electrically insulating adhesive paste is formed on a substrate having bond pads, covering the bond pads with the adhesive. The bond pads of the flip chip are aligned with the bond pads of the substrate, and then the at least partially hardened flip chip polymer bumps are pushed through the substrate adhesive with pressure sufficient for the flip chip polymer bumps to directly contact and deform the substrate bond pads.
摘要:
The invention provides a flip chip mounting process in which a layer of electrically insulating adhesive paste is applied on a substrate having bond pads, covering the bond pads with the adhesive. Electrically conductive polymer bumps are formed on bond pads of a flip chip to be bonded to the substrate, and the polymer bumps are at least partially hardened. The bond pads of the flip chip are then aligned with the bond pads of the substrate, and the at least partially hardened polymer bumps are pushed through the adhesive on the substrate to contact directly and bond the polymer bumps to the bond pads of the substrate. This process results in direct electrical and mechanical bonding of the polymer bumps between the chip and substrate bond pads, even though the adhesive film was applied on the substrate in a manner that covered the substrate bond pads. The polymer bumps displace the adhesive as they are pushed through it and expand laterally on the substrate bond pads. As a result, the area around the polymer bumps between the chip and the substrate is filled with the adhesive, in the manner of an underfill, whereby a separate, post-bond underfill process is not required.
摘要:
In a flip chip bonding method, polymer bumps are formed, using a bonding tool, on an IC chip, held via suction to the bonding tool. An insulating adhesive film is pressed onto the upper surface of a circuit board held via suction with a suction stage. Heat is then applied to bring the film into close contact with bond pads of the circuit board. At this point, the bonding tool is moved downward, bonding the polymer bumps to the circuit board electrodes. During the time of this downward movement, bonding of the polymer bumps to the circuit board bond pads can be achieved by piercing the insulating adhesive film with the polymer bumps, and it is found that strong bonding can be achieved with adequate reliability. This method eliminates the need for a process in which through-holes must be pierced in the insulating adhesive film to accommodate the polymer bumps.
摘要:
This noncontact ID card or the like comprises an antenna circuit board having an antenna formed on a substrate and an interposer board having expanded electrodes formed on a substrate where an IC chip is embedded, the expanded electrodes being connected to electrodes of the IC chip, wherein both boards are stacked in such a way that the electrodes of the antenna are joined to the expanded electrodes.
摘要:
A method of manufacturing a COF package comprises the steps of providing a resin film substrate with a hole for receiving a chip, providing an IC chip having electrodes, inserting the IC chip into the hole so as to fix it with its electrodes exposed above the substrate surface, and forming a circuit pattern on the substrate surface for connection with the electrodes. The hole and the IC chip are tapered, and the IC chip is secured in the hole with sealant or adhesive.
摘要:
There are disclosed; an active energy beam curing type conductive paste, containing a conductive substance, and an active energy beam polymerizable compound, wherein a cured matter, obtained when a composition of the paste excluding the conductive substance is cured with an electron beam having an acceleration voltage of 150 kV and an irradiated dose of 40 kGy, has an internal stress of 5 to 50 Mpa; a production method and a device for a conductor circuit substrate using the active energy beam curing type conductive paste; and a non-contact ID using the active energy beam curing type conductive paste and a production method for the ID.
摘要:
There is provided an exhaust purifying system for an internal combustion engine comprising a fuel supply valve for supplying fuel to an exhaust passage for an internal combustion engine of a vehicle, an ignition device for igniting the fuel supplied from the fuel supply valve, and a controller for heating the ignition device to selectively realize at least an ignition temperature Ti in which the fuel can be ignited and a waiting temperature Ts in which the fuel cannot be ignited. The controller controls the waiting temperature Ts to be the lower as a predicted deceleration time tp that is the time for which a decelerating state of the vehicle lasts is larger.
摘要:
An exhaust gas purifying apparatus for an internal combustion engine is provided with: a first catalyst (234) which is disposed in an exhaust passage of the internal combustion engine (200); a second catalyst (235) which is disposed in the exhaust passage on a downstream side of the first catalyst; a reducing agent supplying device (233) which is disposed on an upstream side of the first catalyst and which is configured to supply a reducing agent into the exhaust passage; and a reducing agent supply controlling device (100) which is configured to control the reducing agent supplying device such that an air-fuel ratio on the upstream side of the first catalyst becomes momentarily rich.
摘要:
A vehicle periphery image generation apparatus for generating a vehicle periphery image with a wide view. The apparatus includes an image acquisition unit that acquires vehicle periphery images obtained by vehicle mounted photographic cameras, a display device, a viewing point position setting unit that sets the position to a viewing point from a perpendicular upward direction, a fish-eye image generation unit for generating a fish-eye image using the periphery images and a position set by the viewing point position setting unit, a self vehicle image generation unit that generates a self vehicle image as the fish-eye image with the position set by the viewing point position setting unit, and a display image generation unit for generating an image to be displayed on the display device using the fish-eye image and the self vehicle image, wherein the position of the viewing point of the fish-eye image can be changed.
摘要:
An image processing apparatus separates in a scanned image a text area from a graphic area primarily including a graphic form or a graph. For the text area, neighboring black pixels are connected to perform character determination in a unit of a rectangle obtained by connecting the black pixels. For the graphic area, labeling processing is used to extract a circumscribed rectangle of consecutive black pixels, without connecting the black pixels, to perform character determination in a unit of the circumscribed rectangle.