ELECTRONIC PH SENSOR DIE PACKAGING
First Claim
Patent Images
1. A pH sensor comprising:
- a substrate;
an ion sensitive field effect transistor (ISFET) die comprising an ion sensing part that responds to pH, wherein the ISFET die is located over the substrate;
a protective layer formed over at least a portion of an outer surface of the ISFET die and at least a portion of the substrate; and
a cover member mechanically coupled to the protective layer, wherein the cover member houses the ISFET die and the substrate, and wherein the cover member defines an opening proximate to the ion sensing part.
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Abstract
A pH sensor is provided. The pH sensor comprises a substrate and an ion sensitive field effect transistor (ISFET) die comprising an ion sensing part that responds to pH, wherein the ISFET die is located over the substrate. The pH sensor also comprises a protective layer formed over at least a portion of an outer surface of the ISFET die and at least a portion of the substrate. Further, the pH sensor comprises a cover member mechanically coupled to the protective layer, wherein the cover member houses the ISFET die and the substrate, and wherein the cover member defines an opening proximate to the ion sensing part.
17 Citations
20 Claims
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1. A pH sensor comprising:
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a substrate; an ion sensitive field effect transistor (ISFET) die comprising an ion sensing part that responds to pH, wherein the ISFET die is located over the substrate; a protective layer formed over at least a portion of an outer surface of the ISFET die and at least a portion of the substrate; and a cover member mechanically coupled to the protective layer, wherein the cover member houses the ISFET die and the substrate, and wherein the cover member defines an opening proximate to the ion sensing part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A sensor device comprising:
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a substrate; a field effect transistor (FET) die mounted over the substrate via a frit material; a protective layer formed at least partially over an outer surface of the FET die and at least partially over the substrate; and at least one wire that is bonded to the FET die at a first end, wherein at least a portion of the wire is embedded in the frit material. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of manufacturing a sensor device, the method comprising:
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bonding a first end of a wire to a first side of a field effect transistor (FET) sensing die; embedding at least a portion of the wire in a frit material; attaching a substrate to the first side of the FET sensing die via the frit material; attaching a cap over the substrate by at least applying a frit layer between the substrate and the cap; and forming a protective layer over at least a portion of the cap and at least a portion of the FET sensing die. - View Dependent Claims (18, 19, 20)
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Specification