Thick film and thin film composite substrate and electronic circuit apparatus using it
First Claim
Patent Images
1. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
- a thin film substrate including a first signal wiring layer therein, said first signal wiring layer including a signal wiring for electrically interconnecting signal terminals of said integrated circuit chips; and
a thick film substrate laminated together with said thin film substrate and including a second signal wiring layer therein, said second signal wiring layer including a signal wiring for electrically interconnecting signal terminals of said integrated circuit chips.
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Abstract
A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising a thin film substrate including a signal wiring layer therein, a thick film substrate laminated together with the thin film substrate, and at least a part of signal wiring being formed as a signal wiring layer included in the thick film substrate.
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Citations
32 Claims
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1. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thin film substrate including a first signal wiring layer therein, said first signal wiring layer including a signal wiring for electrically interconnecting signal terminals of said integrated circuit chips; and a thick film substrate laminated together with said thin film substrate and including a second signal wiring layer therein, said second signal wiring layer including a signal wiring for electrically interconnecting signal terminals of said integrated circuit chips. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; and a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate, wherein the signal wiring layer included in said thin film substrate is cross sectionally dimensioned so that a resulting DC resistance of the longest signal wiring thereof and included in said thin film substrate is equivalent to one tenth or less of characteristic impedance value of said signal wiring.
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24. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; and the signal wiring layer included in said thin film substrate comprising a signal wiring layer for testing.
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25. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; and through-holes included in said thin film substrate being arranged in a lattice form with a pitch equivalent to the lattice pitch of said thin film substrate.
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26. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, wherein the characteristic impedance of a signal wiring in a thin film is made substantially equal to that of a signal wiring in a thick film.
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27. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; and a resistor element for terminating said integrated circuit chip, said resistor element being disposed under a test pad on the surface of said thin film substrate, said resistor element being connectable to said test pad via a partially-through-hole. - View Dependent Claims (28)
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29. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; a resistor element for terminating said integrated circuit chip, said resistor element being disposed in an area between a test pad and an integrated circuit chip on the surface of said thin film substrate; and a wiring layer used exclusively for forming wiring connecting said resistor element to said test pad.
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30. A thick film and thin film composite wiring substrate for mounting integrated circuit chips thereon, comprising:
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a thick film substrate including a signal wiring layer therein; a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; a pad disposed on the back of said thick film substrate for connection with a power supply pin; a plurality of through-holes included in said thick film substrate being connected to said pad; another pad disposed on the back of said thick film substrate for connection with a signal input/out pin; and one through-hole included in said thick film substrate being connected to said another pad.
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31. An electronic circuit apparatus comprising:
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a wiring substrate for mounting a plurality of integrated circuit chips or integrated circuit packages and for electrically interconnecting said integrated circuit chips or integrated circuit packages; pins or connectors for inputting/outputting signals from/to the outside; said wiring substrate comprising a thick film substrate including a signal wiring layer therein and a thin film substrate including a signal wiring layer therein, said thin film substrate being formed above said thick film substrate; and at least a part of signal wiring carrying electric signals having no relation to response speed of said electronic circuit apparatus being disposed in signal wiring layers included in said thick film substrate. - View Dependent Claims (32)
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Specification