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US 7,598,653 B2Granted
Surface acoustic wave bio-chip
AssigneeIndustrial Technology Research Institute
InventorsYi-Chin Tsai, Wen-Pin Hsieh, Kai-Cheng Chang
Life of this patent
Estimating the term…
Abstract
A surface acoustic wave (SAW) bio-chip is designed with signal processing circuits. The chip can achieve precise measurements or detection quantitatively via the difference between the experiment-control mode, and followed by amplification and filtering of the signal processing circuits. By changing the designs of the substrate, quantitative detection toward different analyses can be achievable.
Claims16
A surface acoustic wave (SAW) bio-chip, comprising:
- a substrate, having property of piezoelectric material;
- an insulating layer, implemented on the substrate;
- a SAW generating region, implemented on the insulating layer, wherein a first SAW signal and a second SAW signal, being substantially identical, are generated from a same SAW element by interaction with the substrate and travel on the insulating layer;
- a first SAW transduction region, implemented on the insulating layer to receive the first SAW signal for producing a first electric signal;
- a second SAW transduction region, implemented on the insulating layer to receive the second SAW signal for producing a second electric signal;
- and
- a circuit unit, implemented on the substrate to receive the first electric signal and the second electric signal for processing the signals,
- wherein when the bio-chip is in operation, a reference sample is disposed over the insulating layer and at one of two routes of the first SAW signal and the second SAW signal, a testing sample is disposed over the insulating layer and at another one of the two routes of the first SAW signal and the second SAW signal,
- wherein the two routes are symmetric with respect to the SAW generating region.
6 more elements
A surface acoustic wave (SAW) bio-chip, comprising:
- a substrate;
- an insulating layer, implemented on the substrate;
- a first intr-digital transducer (IDT) unit, implemented on the insulating layer, wherein a first SAW signal and a second SAW signal, being substantially identical, are generated from the first IDT unit by interaction with the substrate and travel on the insulating layer;
- a second IDT unit, implemented on the insulating layer to receive the first SAW signal for producing a first electric signal;
- a third IDT unit, implemented on the insulating layer to receive the second SAW signal for producing a second electric signal;
- and
- a circuit unit, implemented on the substrate, to receive the first electric signal and the second electric signal for processing the signals,
- wherein when the bio-chip is in operation, a reference sample is disposed over the insulating layer and at one of two routes of the first SAW signal and the second SAW signal, a testing sample is disposed over the insulating layer and at another one of the two routes of the first SAW signal and the second SAW signal,
- wherein the two routes are symmetric with respect to the first IDT unit.
6 more elements
Dependencies are inferred from the claim text.