Semiconductor device and an electronic device
First Claim
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1. A semiconductor device comprising:
- a package substrate having a multilayer structure;
a semiconductor chip mounted on a main surface of said package substrate;
wherein said semiconductor chip includes,an internal circuit;
an I/O circuit interacting a signal between said internal circuit and an external device;
a first voltage supply electrode which supplies a first operating voltage to said internal circuit; and
a second voltage supply electrode which supplies a second operating voltage, being different from said first operating voltage, to said I/O circuit, andwherein said package substrate includes,a first electrode provided on said main surface of said package substrate and being electrically coupled to said first voltage supply electrode of said semiconductor chip;
a second electrode provided on said main surface of said package substrate and being electrically coupled to said second voltage supply electrode of semiconductor chip;
a first wiring plane being formed of a wiring layer which is different from said first and second electrodes and being electrically coupled to said first electrode via a through hole;
a second wiring plane being formed of the same wiring layer as that of said first wiring plane and being electrically coupled to said second electrode via a through hole;
a third wiring plane being formed of a wiring layer which is different from both said first and second wiring planes and each of said first and second electrodes, said third wiring plane commonly supplying a reference potential to said internal circuit and said I/O circuit of said semiconductor chip;
third electrodes provided on said back surface opposing to said main surface of said package substrate; and
said third electrodes being used as external terminals of said package substrate,wherein said first wiring plane and said second wiring plane are separated from each other in a plane view.
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Abstract
A semiconductor device has a reduced number of external power terminals and is scaled down while suppressing power noise, and an electronic device is efficiently equipped with a bypass condenser. A package substrate has, on its surface, a semiconductor chip having a plurality of output circuits and at least one electrode for supplying a voltage to each of the output circuits, and is provided with external terminals on its back surface and has a plurality of wiring layers.
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Citations
20 Claims
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1. A semiconductor device comprising:
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a package substrate having a multilayer structure; a semiconductor chip mounted on a main surface of said package substrate; wherein said semiconductor chip includes, an internal circuit; an I/O circuit interacting a signal between said internal circuit and an external device; a first voltage supply electrode which supplies a first operating voltage to said internal circuit; and a second voltage supply electrode which supplies a second operating voltage, being different from said first operating voltage, to said I/O circuit, and wherein said package substrate includes, a first electrode provided on said main surface of said package substrate and being electrically coupled to said first voltage supply electrode of said semiconductor chip; a second electrode provided on said main surface of said package substrate and being electrically coupled to said second voltage supply electrode of semiconductor chip; a first wiring plane being formed of a wiring layer which is different from said first and second electrodes and being electrically coupled to said first electrode via a through hole; a second wiring plane being formed of the same wiring layer as that of said first wiring plane and being electrically coupled to said second electrode via a through hole; a third wiring plane being formed of a wiring layer which is different from both said first and second wiring planes and each of said first and second electrodes, said third wiring plane commonly supplying a reference potential to said internal circuit and said I/O circuit of said semiconductor chip; third electrodes provided on said back surface opposing to said main surface of said package substrate; and said third electrodes being used as external terminals of said package substrate, wherein said first wiring plane and said second wiring plane are separated from each other in a plane view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A semiconductor device comprising:
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a package substrate having a multilayer structure; a semiconductor chip mounted on a main surface of said package substrate; wherein said semiconductor chip includes, an internal circuit; an I/O circuit interfacing a signal between said internal circuit and an external device; a first voltage supply electrode which supplies a first operating voltage to said internal circuit; and a second voltage supply electrode which supplies a second operating voltage, being different from said first operating voltage, to said I/O circuit, and wherein said package substrate includes, a first electrode provided on said main surface of said package substrate and being electrically coupled to said first voltage supply electrode of said semiconductor chip; a second electrode provided on said main surface of said package substrate and being electrically coupled to said second voltage supply electrode of semiconductor chip; a first wiring plane being formed of a wiring layer which is different from said first and second electrodes and being electrically coupled to said first electrode via a through hole; a second wiring plane being formed of the same wiring layer as that of the said first wiring plane and being formed outside said first wiring plane and being electrically coupled to said second electrode via a through hole; a third wiring plane being formed of a wiring layer which is different from both said first and second wiring planes and each of said first and second electrodes, said third wiring plane commonly supplying a reference potential to said internal circuit and said I/O circuit of said semiconductor chip; third electrodes provided on said back surface opposing to said main surface of said package substrate; and said third electrodes being used as external terminals of said package substrate, wherein said first wiring plane and said second wiring plane are separated from each other in a plane view. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A semiconductor device comprising:
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a package substrate having a plane formed in a quadrangle shape and a multilayer structure; a semiconductor chip mounted on a main surface of said package substrate; wherein said semiconductor chip includes, an internal circuit; an I/O circuit interfacing a signal between said internal circuit and an external device; a first voltage supply electrode which supplies a first operating voltage to said internal circuit; and a second voltage supply electrode which supplies a second operating voltage, being different from said first operating voltage, to said I/O circuit, and wherein said package substrate includes, a first electrode provided on said main surface of said package substrate and being electrically coupled to said first voltage supply electrode of said semiconductor chip; a second electrode provided on said main surface of said package substrate and being electrically coupled to said second voltage supply electrode of semiconductor chip; a first wiring plane being formed of a wiring layer which is different from said first and second electrodes and being electrically coupled to said first electrode via a through hole; a second wiring plane being formed of the same wiring layer as that of said first wiring plane and being electrically coupled to said second electrode via a through hole; a third wiring plane being formed of a wiring layer which is different from both said first and second wiring plane and each of said first and second electrodes, said third wiring plane commonly supplying a reference potential to said internal circuit and said I/O circuit of said semiconductor chip; third electrodes provided on said back surface opposing to said main surface of said package substrate; and said third electrodes being used as external terminals of said package substrate, wherein said external terminals and said second wiring plane are provided between one side of said package substrate and said first wiring plane, wherein said external terminals are provided between said one side of said package substrate and said second wiring plane, wherein said first wiring plane and said second wiring plane are separated from each other in a plane view. - View Dependent Claims (17, 18, 19, 20)
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Specification