Module comprising IC memory stack dedicated to and structurally combined with an IC microprocessor chip
First Claim
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1. A computer module comprising:
- an integrated circuit microprocessor chip containing computer circuitry;
a stack of glued together integrated circuit memory chips, each containing memory circuitry dedicated to the computer module;
terminals formed on the microprocessor chip, including memory-interface terminals connected to the computer circuitry contained in the microprocessor chip;
the stack of memory chips having a planar access surface to which an array of spaced electrical leads extend from the memory circuitry;
means for electrically connecting each memory-interface terminal on the microprocessor chip to at least one of the leads at the access surface of the stack of memory chips; and
means for structurally integrating the stack of memory chips and the microprocessor chip to constitute a computer module.
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Abstract
A computer module is disclosed in which a stack of glued together IC memory chips is structurally integrated with a microprocessor chip. The memory provided by the stack is dedicated to the microprocessor chip. The microprocessor and its memory stack may be connected either by glue and/or by solder bumps. The solder bumps can perform three functions--electrical interconnection, mechanical connection, and heat transfer. The electrical connections in some versions are provided by wire bonding.
393 Citations
26 Claims
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1. A computer module comprising:
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an integrated circuit microprocessor chip containing computer circuitry; a stack of glued together integrated circuit memory chips, each containing memory circuitry dedicated to the computer module; terminals formed on the microprocessor chip, including memory-interface terminals connected to the computer circuitry contained in the microprocessor chip; the stack of memory chips having a planar access surface to which an array of spaced electrical leads extend from the memory circuitry; means for electrically connecting each memory-interface terminal on the microprocessor chip to at least one of the leads at the access surface of the stack of memory chips; and means for structurally integrating the stack of memory chips and the microprocessor chip to constitute a computer module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of fabricating a computer module, comprising;
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providing an integrated circuit microprocessor chip containing computer circuitry and having a plurality of terminals connected to its computer circuitry, including memory-interface terminals; providing a glued together stack of integrated circuit memory chips having electrical leads extending to an access surface of the stack; structurally integrating the stack and the microprocessor chip to constitute a computer module; and electrically connecting the memory-interface terminals of the microprocessor chip to the electrical leads at the access surface of the stack. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification