Battery mounted integrated circuit device
First Claim
1. A battery mounted integrated circuit device, comprising:
- (1) a semiconductor substrate;
(2) a solid state battery mounted on said semiconductor substrate;
(3) an integrated circuit mounted on said semiconductor substrate;
(4) a first diffusion layer, containing an N-type impurity, formed between a region of said semiconductor substrate where said solid state battery is mounted and an region of said semiconductor substrate where said integrated circuit is mounted; and
(5) a second diffusion layer, containing an N-type impurity, formed below said region of said semiconductor substrate where said solid state battery is mounted, and overlapping with said first diffusion layer, said solid state battery comprising a positive electrode, a negative electrode, and a solid electrolyte disposed between said positive electrode and said negative electrode, the concentration of said N-type impurity in said first diffusion layer is higher than the concentration of said N-type impurity in said second diffusion layer.
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Abstract
The present invention relates to a battery mounted integrated circuit device where an integrated circuit and a solid state battery are formed on the same substrate. In this battery mounted integrated circuit device, a first diffusion layer containing an N-type impurity is formed between a region of a semiconductor substrate where the solid state battery is mounted and a region of the semiconductor substrate where the integrated circuit is mounted, and a second diffusion layer containing an N-type impurity is formed below the region of the semiconductor substrate where the solid state battery is mounted, and overlaps with the first diffusion layer.
22 Citations
8 Claims
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1. A battery mounted integrated circuit device, comprising:
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(1) a semiconductor substrate;
(2) a solid state battery mounted on said semiconductor substrate;
(3) an integrated circuit mounted on said semiconductor substrate;
(4) a first diffusion layer, containing an N-type impurity, formed between a region of said semiconductor substrate where said solid state battery is mounted and an region of said semiconductor substrate where said integrated circuit is mounted; and
(5) a second diffusion layer, containing an N-type impurity, formed below said region of said semiconductor substrate where said solid state battery is mounted, and overlapping with said first diffusion layer, said solid state battery comprising a positive electrode, a negative electrode, and a solid electrolyte disposed between said positive electrode and said negative electrode, the concentration of said N-type impurity in said first diffusion layer is higher than the concentration of said N-type impurity in said second diffusion layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification