摘要:
An epoxy resin composition having excellent connection reliability and transparency, a method for manufacturing a composite unit using the epoxy resin composition, and the composite unit, are disclosed. The manufacturing method includes an attaching step of attaching an epoxy resin composition (2) containing a novolak phenolic curing agent, an acrylic elastomer composed of a copolymer containing dimethylacrylamide and hydroxylethyl methacrylate, an epoxy resin and not less than 5 parts by weight to not more than 20 parts by weight of an inorganic filler to 100 parts by weight of the epoxy resin, to a printed circuit board (1) in the form of a sheet. The manufacturing method also includes a temporary loading step of temporarily loading a semiconductor chip (3) and capacitors (4a) to (4d) on the epoxy resin composition (2) and an ultimate pressure bonding step of pressuring the semiconductor chip (3) and capacitors (4a) to (4d) by a thermal bonding head (20) in situ to ultimately pressure bond the semiconductor chip (3) and capacitors (4a) to (4d).
摘要:
An epoxy resin composition having excellent connection reliability and transparency, a method for manufacturing a composite unit using the epoxy resin composition, and the composite unit, are disclosed. The manufacturing method includes an attaching step of attaching an epoxy resin composition (2) containing a novolak phenolic curing agent, an acrylic elastomer composed of a copolymer containing dimethylacrylamide and hydroxylethyl methacrylate, an epoxy resin and not less than 5 parts by weight to not more than 20 parts by weight of an inorganic filler to 100 parts by weight of the epoxy resin, to a printed circuit board (1) in the form of a sheet. The manufacturing method also includes a temporary loading step of temporarily loading a semiconductor chip (3) and capacitors (4a) to (4d) on the epoxy resin composition (2) and an ultimate pressure bonding step of pressuring the semiconductor chip (3) and capacitors (4a) to (4d) by a thermal bonding head (20) in situ to ultimately pressure bond the semiconductor chip (3) and capacitors (4a) to (4d).
摘要:
A three-dimensional object can be produced based on biological property information indicating a biological property obtained by MRE measurement of an organism. The three-dimensional object has a distribution of a strength property corresponding to a distribution of the biological property.
摘要:
A three-dimensional fabricating apparatus includes a discharge head, a detector, a non-contact cleaner, and a controller. The discharge head discharges droplets to fabricate a three-dimensional object. The detector detects a state of the discharge head. The non-contact cleaner cleans the discharge head in a non-contact manner. The controller controls an operation of the three-dimensional fabricating apparatus according to the state of the discharge head detected by the detector after the non-contact cleaner cleans the discharge head.
摘要:
A hydrogel object includes a polymer and water, wherein the rate of mass loss is not greater than 20 percent by mass when the hydrogel object is left undone for one week at 25 degrees C. and relative humidity of 50 percent.
摘要:
A method of manufacturing a semiconductor device is provided. The method includes placing a semiconductor chip by flip-chip mounting on a substrate by using an insulating resin adhesive film (NCF) and preventing overflow of the NCF and the intervention of an insulating resin or an inorganic filler between a bump and an electrode during hot pressing. The method also includes temporarily affixing an NCF of a size that is substantially 60 to 100% the area of a region enclosed with a plurality of bumps of the semiconductor chip arranged in a peripheral alignment, and having a minimum melt viscosity of 2×102 to 1×105 Pa·s, to the region enclosed with a plurality of electrodes of the substrate corresponding to the bumps, and aligning the semiconductor chip and the substrate with each other such that the bumps and the electrodes corresponding thereto are opposed to each other.
摘要:
The present invention provides an annular exposure device, including: plural light emitting members that are provided two-dimensionally along an outer circumferential surface of the annular exposure device, the annular exposure device rotating when the annular exposure device contacts a surface of an image holding member.
摘要:
An organic electroluminescent device includes: a pair of electrodes; a first light-emitting region that is disposed between the pair of electrodes, and that emits light when a voltage is applied between the pair of electrodes such that one of the pair of electrodes serves as an anode; and a second light-emitting region that is disposed between the pair of electrodes, and that emits light when a voltage is applied between the pair of electrodes such that the other of the pair of electrodes serves as an anode.
摘要:
A compression bonding device has a dam member so that when a pressing head is pressed against an object to be pressed, the bonding part is surrounded by the dam member. Thus, even if the surface of the bonding part bulges by pressing, the bulging part is stopped by the dam member and the surface of the bonding part does not horizontally extend. As a result of the absence of horizontal extension of the bonding part, electric components of the object to be pressed are not subjected to a force that horizontally moves the electric components and the electric components are vertically pressed downward and connected to the terminals of the substrate. Thus, an electric device having high connection reliability is obtained.