Kabushiki Kaisha Toshiba

Michiya Higashi

Shinetsu Fujieda

Ken Uchida

Akira Yoshizumi

Hiroshi Shimozawa

Hirotoshi Ikeya

Naoko Kihara

Yusuke Wada

Cao Minh Thai

Kazutaka Matsumoto

Keiji Kamasaki

Hisayuki Hirai

Akira Yoshizumo

Syouichi Miyahara

A resin-encapsulated semiconductor device having a semiconductor chip mounted on a die pad with a die bonding portion interposed, a lead arranged in a periphery of the die pad and electrically connected with a bonding pad portion of the semiconductor chip, and an encapsulating resin layer which encapsulates the semiconductor chip so that a part of the lead is guided to the outside, wherein an adhesive resin layer is interposed at least either between the die pad and the die bonding portion is described, or between the semiconductor chip and the die bonding portion.

Resin-encapsulated semiconductor device

According to a first embodiment of the present invention, there is provided a resin encapsulation type semiconductor device, comprising a semiconductor element and an epoxy resin composition used as an encapsulating resin, the composition containing as essential components:

Resin encapsulation type semiconductor device

The device characteristics is in containing a maleimide resin with a content of 0.2 weight percent of less of an organic acid, a phenolic resin, and a combination of a basic catalyst and a peroxide as a curing catalyst. In addition, additives as a mold release agent such as a polyethylene wax and an inorganic filler are contained. The maleimide resin composition is prepared in such a manner that a part of the phenolic resin is preblended with the curing catalyst in advance of other components, while the remainder of the phenolic resin is added to the maleimide resin to prepolymerize, and then, the preblend and the prepolyer are blended the other components. The maleimide resin composition has excellent moldability by improvement of curing characteristics through combined use of a basic catalyst and a peroxide as a curing agent. Besides, a resin encapsulated semiconductor device manufactured by encapsulating a semiconductor element with the resin composition has excellent heat resistance and moisture-resistance reliability.

Maleimide resin composition and resin encapsulated semiconductor device

A semiconductor device encapsulant contains (a) a thermosetting resin for providing a cured product having a glass transition temperature of not less than 190.degree. C., (b) a filler consisting of a fused silica, (c) a modifier consisting of an MBS or ABS, (d) a modifier consisting of a silicone rubber or a silicone gel, and (e) a lubricant containing a metal chelate compound.

Semiconductor device encapsulant

A light-emitting diode device includes a light-emitting diode chip, lead-frames respectively connected to an anode and a cathode of the light-emitting diode chip, an encapsulant for encapsulating the light-emitting diode chip and the lead-frames, and a buffer layer, formed between the encapsulant, on the one hand, and the light-emitting diode chip and the lead-frames, on the other, for reducing the stress acting from the encapsulant onto the light-emitting diode chip and the lead-frames. This device can be minimized degradation of quality caused by this stress, and maintained high product quality for a long period of time. An encapsulating epoxy resin composition contains 100 parts by weight of an epoxy resin, 70 to 140 parts by weight of a curing agent including an acid anhydride, 0.5 to 4.0 parts by weight of a curing accelerator including an onium or diazabicycloalkene salt, and 0.1 to 5.0 parts by weight of a thiophosphite. This resin composition can be suitably used as an encapsulant for LED devices.

Acid anhydride-cured epoxy resin encapsulant with triorganothiophosphite

An encapsulant consisting of an epoxy resin composition and suitably used to encapsulate a semiconductor device which is to be surface-mounted contains

Semiconductor device encapsulant consisting of epoxy resin composition

In multimold semiconductor devices, semiconductor chips are mounted on a lead frame and bonded with wire, sealed by an inner resin, and further enclosed by an outer resin. In particular, wax to be added to the inner resin is at least one compound selected from the group consisting of ester group, fatty acid based, fatty acid metallic salt based, fatty alcohol, polyhydric alcohol, and fatty acid amide compounds. In the semiconductor devices sealed by the inner resin including wax thus defined, since the adhesion strength between the inner and outer resins can be increased, peeling resistance between the two and the moisture resistance can be improved markedly and cracks after dip soldering can be perfectly eliminated, without effecting any conventional inner resin treatment such as honing, burning, after-curing, etc.

Multimold semiconductor device and the manufacturing method therefor

An epoxy resin composition for encapsulation of semiconductor device comprises the components (a), (b), (c) and at least one of the components (d) and (e) as shown below:

Epoxy resin composition for encapsulation of semi-conductor device

An epoxy resin composition for sealing, and a resin-sealed type semiconductor device in which this composition is used, of outstanding heat cycle resistance, humidity resistance and laser marking characteristics, can be obtained by using a combination of an organic phosphine compound and a metal complex dye. The epoxy resin composition, characterized in that it consists of epoxy resin, a curing agent having at least 2 phenolic hydroxyl groups per molecule, an organic phosphine compound and a metal complex dye; and to a resin-sealed type semiconductor device characterized in that it is sealed with this composition.

Epoxy resin composition, and resin-sealed semiconductor device in which

A resin encapsulation type semiconductor device having a semiconductor element and a resinous encapsulating material for encapsulating said semiconductor element therein, said resinous encapsulating material comprising a cured product of an epoxy resin composition for encapsulation of semiconductor, comprising:

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Kawasaki, Japan

Michiya Higashi