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Beitrittsdatum: 13. Mai 2022

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See also Microsoft Office References External links Category:Microsoft Office1. Technical Field The present invention relates generally to the field of integrated circuits. More particularly, the invention relates to a method and apparatus for making pre-packaged integrated circuit chips. 2. Background Art Integrated circuit chips are typically formed by placing and interconnecting as many as a few million active circuit elements on a wafer. These individual circuit elements, which are generally referred to as devices or "chips," are configured into higher level circuits as many as several hundred thousand chips are interconnected on a single substrate or wafer. A wafer is subsequently separated into a plurality of chips, or dies, and each die is then attached to a lead frame. The lead frame is subsequently encapsulated with a molding compound to form a packaging component or module. Lead frames generally comprise a non-conductive material, such as plastic or epoxy, on which the die is attached and supported. The lead frame also comprises a plurality of elongated leads that are used to electrically interconnect the chip and other components external to the chip. Typical lead frames are described in U.S. Pat. No. 5,286,679 to Wood et al., and U.S. Pat. No. 5,291,061 to Wood et al., which are incorporated by reference. A conventional process of making integrated circuit chips is shown in FIG. 1. Referring to FIG. 1, a molding compound 110 is placed over a lead frame (not shown) and then the lead frame with the molding compound 110 is placed in a mold (not shown). The mold is then placed in a clamping press and compressed to force the molding compound 110 to the lead frame. After molding, the lead frame and molding compound 110 are removed from the mold and singulated into individual chips. Unfortunately, the molding compound 110 is often misaligned with the lead frame. When this misalignment occurs, the clamping forces used to compress the molding compound are also directed to the misaligned lead frame. The misalignment of the lead frame often causes bent or cracked leads, damage to the molding compound 110, and/or increased thickness of the molding compound 110.1. Field of the Invention The present invention relates to a power storage device having a high level of integration and a method for manufacturing the same. 2. Description of the




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