| 摘要 |
According to this invention, there is provided a semiconductor device including a TAB tape having through hole for an element, a plurality of leads integrally formed on the TAB tape, a semiconductor element connected to one end of each of the leads through a bump formed in the through hole for the element, a plurality of lead frames each connected to the other end of a corresponding one of the leads, and a mold resin sealed to cover the most part of the TAB tape, the leads, the semiconductor element, and the lead frames, wherein connection portions between the leads and the lead frames are linearly formed at equal pitches perpendicularly to an outer periphery of the semiconductor element opposite to the connection portions. Each of portions near positions where the leads are respectively connected to the lead frames is formed in a gull-wing shape. The straight end portions of the lead frames extend from ends of the lead frames to flexing points of the lead frames, and the lengths of the straight end portions are set at least 0.3 mm or more. In the mold resin, the thickness of a resin positioned at the upper portion of the semiconductor element is set to be smaller than that of a resin positioned at the lower portion of the semiconductor element.
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