BIOSENSOR READER AND BIOSENSOR READER SYSTEM
First Claim
1. A biosensor reader that has a field-effect transistor (FET) biosensor, which includes between electrodes at least one probe channel to which probe materials are immobilized, attached thereto and analyzes an electrical conductivity change of the probe channel caused by the binding between the probe material and a target material contained in an analysis solution, the biosensor reader comprising:
- a measurement module connecting the probe channel electrically to a reference resistance having a fixed resistance value by the attachment of the FET biosensor, measuring a reference voltage drop across the reference resistance and a channel voltage drop across the probe channel, and analyzing an electrical conductivity change of the probe channel from the reference voltage drop and the channel voltage drop; and
an output module outputting the analysis result of the target material according to the electrical conductivity change.
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Accused Products
Abstract
A biosensor reader and a biosensor reader system are provided. The biosensor reader has a field-effect transistor (FET) biosensor attached thereto, and the FET biosensor includes between electrodes a probe channel to which probe materials are immobilized. The biosensor reader analyzes an electrical conductivity change of the probe channel caused by the binding between the probe material and a target material contained in an analysis solution. The biosensor reader includes a measurement module and an output module. The measurement module connects the probe channel electrically to a reference resistance with a fixed resistance value by the attachment of the FET biosensor, measures a reference voltage drop across the reference resistance and a channel voltage drop across the probe channel, and analyzes an electrical conductivity change of the probe channel from the reference voltage drop and the channel voltage drop. The output module outputs the analysis result of the target material according to the electrical conductivity change.
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Citations
20 Claims
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1. A biosensor reader that has a field-effect transistor (FET) biosensor, which includes between electrodes at least one probe channel to which probe materials are immobilized, attached thereto and analyzes an electrical conductivity change of the probe channel caused by the binding between the probe material and a target material contained in an analysis solution, the biosensor reader comprising:
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a measurement module connecting the probe channel electrically to a reference resistance having a fixed resistance value by the attachment of the FET biosensor, measuring a reference voltage drop across the reference resistance and a channel voltage drop across the probe channel, and analyzing an electrical conductivity change of the probe channel from the reference voltage drop and the channel voltage drop; and an output module outputting the analysis result of the target material according to the electrical conductivity change. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A biosensor reader system that has a field-effect transistor (FET) biosensor, which includes between electrodes a probe channel to which probe materials are immobilized, attached thereto and analyzes an electrical conductivity change of the probe channel caused by the binding between the probe material and a target material contained in an analysis solution, the biosensor reader system comprising:
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a measurement unit measuring a channel voltage drop across the probe channel of the FET biosensor, whose resistance value varies by the binding between the target material and the probe material, and a reference voltage drop across a reference resistance with a fixed resistance value, and outputting a measurement signal according to a difference between the channel voltage drop and the reference voltage drop; a signal processing unit analyzing the target material from the measurement signal; and an output unit outputting the signal process result of the signal processing unit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification