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Integrated microfluidic device with reduced peak power

A microfluidic device and device technology, applied in laboratory containers, laboratory utensils, chemical instruments and methods, etc., can solve problems such as unfavorable temperature uniformity, poor thermal conductivity, slow thermal response, etc.

Inactive Publication Date: 2010-02-03
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such plastics typically exhibit poorer thermal conductivity compared to silicon and glass, which can lead to slow thermal response and unfavorable temperature uniformity in the fluid

Method used

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  • Integrated microfluidic device with reduced peak power
  • Integrated microfluidic device with reduced peak power
  • Integrated microfluidic device with reduced peak power

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Embodiment Construction

[0063] The present invention will now be described with respect to particular embodiments and with reference to certain drawings but the invention is not limited thereto but only by the claims. The drawings described are merely schematic and non-limiting. In the drawings, the size of some of the elements may be exaggerated and not drawn on scale for illustrative purposes. Where the word "comprises / comprises" is used in the present description and claims, it does not exclude other elements or steps. Where an indefinite or definite article is used when referring to a singular noun (eg "a", "the"), this includes a plural of that noun unless expressly stated otherwise.

[0064] The word "comprising / comprising" used in the claims should not be interpreted as being limited to the means listed thereafter; it does not exclude other elements or steps. Therefore, the scope of the expression "apparatus comprising means A and B" should not be limited to an apparatus consisting of parts ...

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Abstract

An integrated micro fluidic device having a number of chambers (11-MN) for heating a fluid, a number of electrical heating elements (R) for heating different ones of the chambers, a controller for controlling the heating elements to vary a temperature of the fluid in the chambers repeatedly through a cycle of different temperatures, the controller being arranged to time the temperature cycle for a given one of the chambers to be out of phase with temperature cycles of others of the chambers. This can help reduce peak power consumption, and thus reduce unwanted voltage drops on supply lines. These can cause loss of precision in heating and sensing circuits. The device can comprise a low temperature polysilicon on a glass substrate. The controller can be coupled to the heating elements using an active matrix of control lines and switches (T2).

Description

technical field [0001] The present invention relates to an integrated microfluidic device having a plurality of chambers on a substrate for manipulating fluids, a number of electrical heating elements for heating different ones of said chambers, and for Controllers that control these heating elements. Background technique [0002] Microfluidic devices are at the heart of most biochip technologies for the preparation of fluid samples and their subsequent analysis. These samples may eg be blood based. It will be appreciated by those skilled in the art that a sample solution may contain any number of objects including, but not limited to, almost any bodily fluid of an organism, such as blood, urine, plasma, lymph, saliva, anal and vaginal secretions, sweat, and semen: Mammalian samples are preferred, and human samples are particularly preferred; environmental samples (e.g. air, agricultural, water and soil samples); biological warfare agent samples; research samples (i.e. in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01L7/00C12Q1/68
CPCB01L3/5027B01L7/52B01J2219/00873B01J2219/00783B01J19/0093B01L2300/0819B01J2219/00831B01J2219/00891B01J2219/00961B01J2219/00986B01J2219/00869B01L2300/1827B01L2200/147B01J2219/00828B01J2219/00853
Inventor D·A·菲什
Owner KONINK PHILIPS ELECTRONICS NV