WO2016180086A1 - 一种用于样品检测的芯片及其封装方法 - Google Patents

一种用于样品检测的芯片及其封装方法 Download PDF

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Publication number
WO2016180086A1
WO2016180086A1 PCT/CN2016/076986 CN2016076986W WO2016180086A1 WO 2016180086 A1 WO2016180086 A1 WO 2016180086A1 CN 2016076986 W CN2016076986 W CN 2016076986W WO 2016180086 A1 WO2016180086 A1 WO 2016180086A1
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Prior art keywords
chip
substrate
cover plate
sample detection
detection
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PCT/CN2016/076986
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English (en)
French (fr)
Inventor
王战会
陈坦
陈方璐
Original Assignee
天津微纳芯科技有限公司
微纳芯（北京）科技有限公司
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Priority to EP16791936.4A priority Critical patent/EP3296019A1/en
Publication of WO2016180086A1 publication Critical patent/WO2016180086A1/zh
Priority to US15/810,062 priority patent/US20180073977A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
    • B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
    • B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/08—Homopolymers or copolymers of acrylic acid esters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1813—Water specific cations in water, e.g. heavy metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/02—Adapting objects or devices to another
    • B01L2200/026—Fluid interfacing between devices or objects, e.g. connectors, inlet details
    • B01L2200/027—Fluid interfacing between devices or objects, e.g. connectors, inlet details for microfluidic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/06—Fluid handling related problems
    • B01L2200/0689—Sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/06—Auxiliary integrated devices, integrated components
    • B01L2300/0627—Sensor or part of a sensor is integrated
    • B01L2300/0654—Lenses; Optical fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0803—Disc shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/08—Geometry, shape and general structure
    • B01L2300/0887—Laminated structure

Definitions

  • the invention relates to the field of sample detection, in particular to a chip for sample detection and a packaging method thereof.
  • Microfluidic chip technology is a new technology for accurately manipulating and controlling nanoliter and picoliter fluids (biological sample fluids) in micrometer-scale flow channels. This technology can be used to prepare samples involved in the fields of chemistry and biology.
  • the basic operating units such as reaction, separation, detection, and cell culture, sorting, and lysis are integrated or substantially integrated into a chip of a few square centimeters (or even smaller).
  • the packaging methods of the microfluidic chip are mainly divided into two types, one is a direct encapsulation method, and the other is an indirect encapsulation method.
  • the direct encapsulation method refers to a method of directly sealing between the substrate and the cover plate by using the characteristics of the chip material, such as a heat sealing method, a laser welding method, or an ultrasonic welding method, which utilizes the properties of the thermoplastic material. Heating, ultrasonic vibration and the like make the contact surface portion of the plastic material reach a molten state, and then solidify to package the two-layer chip structure together.
  • the structure of the microfluidic chip is mainly composed of two parts. As shown in FIG.
  • the micro flow channel 12 is formed on the substrate 11, and then the substrate 11 on which the micro flow channel 12 is formed is packaged by the cover plate 13, so that The microchannel 12 is formed in a relatively sealed state.
  • the indirect encapsulation method mainly seals the two-layer structure by attaching an intermediate medium between the substrate and the cover plate and curing the intermediate layer medium.
  • the intermediate medium is a glue layer, including UV glue, pressure sensitive glue, and the like.
  • 2 shows the structure of a microfluidic chip sealed by a glue layer, in which a layer of glue 14 is sealed between the substrate 11 provided with the microchannels 13 and the cover 12.
  • the patent document CN102923643A discloses a microfluidic chip, which is characterized in that a slide glass (ie, a cover plate) coated with a layer of ultraviolet light curing glue and a chip body (ie, a substrate) are clamped and attached;
  • the document CN103495440A seals the microfluidic chip with a pressure sensitive adhesive.
  • the microfluidic chip of the structure shown in FIG. 2 When the microfluidic chip of the structure shown in FIG. 2 is applied to optical detection, the content of a certain detection item in the sample is reversed by detecting the absorption degree of light by the sample to be detected and the reagent in the detection tank. .
  • the solution is basically to apply a coating layer on the surface of the cover plate, because the glue layer itself will also absorb light, especially the ordinary glue layer (relative to optics) In the case of glue, the absorption of light is relatively high, which affects the final reagent detection.
  • a first object of the present invention is to provide a chip for sample detection, which solves the problem that when the existing chip is used in the field of optical detection, since the material itself absorbs light, the light transmittance of the chip is low, and the detection is performed. The reagent results in errors.
  • a second object of the present invention is to provide a method for packaging a chip for sample detection, to produce a chip having a high transmittance, the steps are simple, the operation is simple, and the package effect of the chip is good.
  • a third object of the present invention is to provide the above-mentioned chip for sample detection in biomedical testing, environmental testing, food hygiene testing, pharmaceutical, and chemical applications.
  • a first aspect of the present invention provides a chip for sample detection, comprising a substrate and a cover plate, wherein the substrate and the cover plate are sealed by a glue layer, and the glue layer is provided with a light transmission hole.
  • a detection groove is disposed on the substrate, and the light transmission hole corresponds to the detection groove.
  • the shape of the detecting slot and the light-transmitting hole may be a circular shape, an elliptical shape, a square shape or another polygonal shape, and the specific shape thereof may be selected according to actual needs, which is not limited by the present invention.
  • the chip of the present invention is preferably a microfluidic chip, and the substrate is provided with a micro flow channel.
  • the shape of the chip is a circle, an ellipse, a rectangle, a square or other polygons.
  • the chip has a circular shape
  • the detecting groove is circumferentially disposed on the substrate; the glue layer is circumferentially disposed to correspond to the detecting groove on the substrate.
  • Light hole More preferably, the detection grooves are disposed equidistantly along the circumference, and the distance from the center of the detection groove to the center of the chip is equal.
  • the shape and size of the detecting grooves may be the same or different.
  • the adhesive layer is an ultraviolet curable adhesive, a pressure sensitive double-sided adhesive or an optical grade double-sided adhesive. More preferably, the adhesive layer is a pressure sensitive double-sided tape.
  • the chip is sealed by the pressure sensitive double-sided tape, and the main advantage compared with other packaging solutions (heat sealing, welding, etc.) is that the cost is low, and large-scale industrial production and packaging processes can be performed. It can be carried out at room temperature (heat sealing solution requires higher temperature, which may affect the reagent inside the chip), and does not require special supporting equipment for packaging, which can improve the chip packaging yield rate.
  • optical grade double-sided tape itself has low absorption of light, the overall light transmittance of the chip can be improved, but the processing cost of the optical grade double-sided tape itself is high, and the optical double-sided tape is high. It may itself affect the reaction of the reagent with the sample.
  • the substrate and the cover are made of silicon wafer, or glass, or quartz, or a thermoplastic polymer.
  • the silicon wafer has the advantages of good heat dissipation, high strength, moderate price, high purity and corrosion resistance.
  • the microchannel network can be engraved on the glass material by using lithography and etching technology, and has certain strength, heat dissipation, light transmittance and Insulation is better, suitable for sample analysis.
  • thermoplastic polymer mainly comprises polyamide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polyvinyl chloride ( PVC), polystyrene (PS), etc. More preferably, the material of the substrate is polymethyl methacrylate.
  • the material of the cover plate is a thermoplastic polymer, and more preferably, the cover plate is made of an optical grade polycarbonate.
  • the materials of the cover plate and the substrate may be the same or different.
  • the number of the light transmission holes and the detection grooves are 1-30, respectively.
  • the number of the light transmission holes and the detection grooves are 5-30, respectively. It is to be understood by those skilled in the art that the number of the light-transmitting holes and the detecting grooves may be set according to specific or actual needs, and the number thereof may be greater than 30, which is not limited in the present invention.
  • a reagent for detecting a sample is installed in the detection tank.
  • the chip is applied to the field of optical detection, the content of a certain detection item in the sample is reversed by detecting the degree of absorption of light by the sample to be detected and the specific reagent in the detection tank.
  • the reagent may be a solid or a liquid. In a particular mode of the invention, the reagent is a solid pellet.
  • the chip has a light transmittance of 5% to 90% at 340 nm.
  • the microfluidic chip in the present invention is a layered structure, and the layered structure may be a single layer or a plurality of layers, including one layer, two layers, three layers or more layers.
  • the layered structure of the chip in the present invention may adopt the structure described in the patent document CN201210046040.0 or CN201110416978.2.
  • the upper and lower layers of the chip structure, the upper layer and the lower layer are watertightly connected; the upper layer is provided with a through hole for loading; the lower layer includes a sample tank, a diluent tank, a quantification tank, a mixing tank, and a reaction detecting tank preloaded with a reagent And a plurality of sets of microchannels that control fluid flow.
  • the upper layer through hole of the chip is used for sample and diluent injection.
  • the sample tank and the diluent tank in the lower layer of the chip are used for storing the sample and the diluent, are mixed by the quantification tank, and are connected to the reaction detecting tank through the microchannel.
  • the upper layer and the lower layer of the chip may be connected by means of bonding, ultrasonic welding or laser welding, and the reaction detecting tank is preliminarily equipped with a lyophilized reaction reagent.
  • the purpose of setting the micro flow channel on the chip is to integrate the sample pre-processing, quantitative transportation, reaction and detection, so that no professional sample preparation equipment and manipulator are needed, and the operation is simple, and the whole process is simple.
  • the detection process is fully automated, no professional operation is required, and multiple detection indicators can be obtained by one test, and the detection cycle is short.
  • the chip is small in size and integrated with the miniaturized detection equipment, and can develop miniaturized, integrated and portable detection equipment to achieve on-site sampling analysis.
  • the number of microchannels disposed on the substrate is 1-100. Those skilled in the art will appreciate that other numbers of microchannels may be provided on the substrate to suit different needs. The invention is not limited in its number.
  • the glue layer is further provided with a corresponding passage corresponding to the micro flow channel and/or the sample tank and/or the diluent tank and/or the quantification tank and/or the mixing tank. hole.
  • a second aspect of the present invention provides a method for packaging a microfluidic chip, comprising: cutting a plurality of light-transmissive holes in a glue layer; and bonding the glue layer processed by the hole-cutting layer to the cover plate; The cover plate is cut into a shape equal to the size of the substrate; the cover plate to which the glue layer is attached is packaged with the substrate; wherein the light transmission hole corresponds to the detection groove on the substrate.
  • the adhesive layer is an ultraviolet curing adhesive, a pressure sensitive double-sided adhesive or an optical grade double-sided adhesive.
  • the substrate and the cover plate are made of silicon wafer, or glass, or quartz, or a thermoplastic polymer.
  • the thermoplastic polymer is polyamide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), polyvinyl chloride (PVC) , polystyrene (PS), etc.
  • the substrate is made of polymethyl methacrylate (PMMA) and the cover is made of optical grade polycarbonate (PC).
  • PMMA polymethyl methacrylate
  • PC optical grade polycarbonate
  • the method comprises:
  • S104 The cover plate to which the pressure sensitive double-sided tape is attached is packaged with the substrate, wherein the light transmission hole corresponds to the detection hole on the substrate.
  • steps S101, S103 may use the same method of dicing or different.
  • the third aspect of the invention provides the application of the above chip in biomedical testing, environmental testing, food hygiene testing, pharmaceutical, and chemical engineering.
  • the biomedical test comprises detection of whole blood, plasma, urine, saliva, semen, spinal cord, amniotic fluid of a human or animal, wherein the detection indicators include alanine aminotransferase, aspartate aminotransferase Enzyme, ⁇ -glutamyltransferase, alkaline phosphatase, total bilirubin, direct bilirubin, total protein, albumin, urea, creatinine, uric acid, glucose, total cholesterol, triglycerides, high density lipid Protein, low density lipoprotein, very low density lipoprotein, serum magnesium, serum potassium, serum sodium, serum chlorine, serum calcium, serum phosphorus, serum iron, serum ammonia, carbon dioxide;
  • the detection indicators include alanine aminotransferase, aspartate aminotransferase Enzyme, ⁇ -glutamyltransferase, alkaline phosphatase, total bilirubin, direct bilirubin, total protein, albumin,
  • the environmental detection comprises water quality detection
  • the detection index comprises an organic substance in the water, a heavy metal ion, and a pesticide residue reagent
  • the food hygiene test comprises detecting microorganisms, additives, pesticide residues, pollutants, proteins in the food.
  • the pharmaceutical and chemical testing includes testing of pharmaceutical ingredients and chemical products.
  • a microfluidic chip provided by the present invention which has a light transmission hole formed on a glue layer for sealing between a cover plate and a substrate, and corresponding to a detection groove on the substrate, thereby increasing the light transmittance of the chip. It is large and can eliminate the adverse effects that the adhesive layer may have on the reaction of reagents and samples, improve the sensitivity and accuracy of optical detection, and increase the application of the chip in different fields.
  • the packaging method of the microfluidic chip provided by the invention not only has the advantages of simple steps and simple operation, but also can package the chips in batches, and the chip obtained by the packaging method of the invention has high transmittance and high efficiency. Sensitivity and accuracy of optical inspection.
  • FIG. 1 is a schematic diagram of the basic structure of a microfluidic chip provided by the prior art.
  • FIG. 2 is a schematic structural view of a microfluidic chip with a glue layer provided by the prior art.
  • FIG. 3 is a schematic structural diagram of a microfluidic chip according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for packaging a microfluidic chip according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view showing a method of packaging a microfluidic chip according to an embodiment of the present invention.
  • FIG. 6 is a front view of a method for packaging a microfluidic chip according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a sample detecting chip according to an embodiment of the present invention.
  • the chip includes a substrate X11 and a cover plate X13.
  • the substrate X11 and the cover plate X13 have the same shape and shape; the substrate X11 and the cover plate X13 are sealed by a glue layer X14, and the glue layer X14 is provided with light transmission.
  • the substrate X11 is provided with a detection groove X16, and the light transmission hole X11 corresponds to the detection groove X16.
  • the chip is a microfluidic chip, and the microchannel X12 is disposed on the substrate X11.
  • the chip may be formed as a circle, a rectangle, a square or other polygon.
  • the chip is circular;
  • the substrate X11 is circumferentially provided with a detection groove X16; for the convenience of detection, the distance from the center of the detection groove X16 to the center of the chip is equal;
  • the glue layer X14 is circumferentially disposed with The light transmission hole X15 corresponding to the detection groove X16 on the substrate X11.
  • the microfluidic chip may be a layered structure, and the layered structure may be a single layer or a plurality of layers, including one layer, two layers, three layers or more layers.
  • the present invention The layered structure of the chip described in the specification may adopt the structure described in the patent document CN201210046040.0 or CN201110416978.2: wherein the upper and lower layers of the chip are connected, the upper layer is connected to the lower layer in a watertight manner; and the upper layer is provided with a pass for sample loading.
  • the lower layer includes a sample tank, a diluent tank, a dosing tank, a mixing tank, a reaction detecting tank pre-filled with a reagent, and a plurality of microchannels for controlling fluid flow; wherein the upper layer through hole is used for sample and diluent
  • the sample tank and the diluent tank in the lower layer of the chip are used for storing the sample and the diluent, and are mixed by the quantification tank and mixed with the reaction detecting tank through the microchannel; the bonding between the upper layer and the lower layer of the chip, ultrasonic welding or The laser welding is connected, and the reaction detecting tank is preliminarily equipped with a lyophilized reaction reagent.
  • a person skilled in the art can modify the structure of the chip according to actual needs, which is not limited by the present invention.
  • the glue layer X14 is further provided with a through hole corresponding to the micro flow channel X12 of the substrate and/or the sample tank and/or the diluent tank and/or the dosing tank and/or the mixing tank.
  • the shape of the detecting groove may be a circle, an ellipse, a square or other polygons (circle and square in FIG. 3), and those skilled in the art may select according to actual needs.
  • the shape is not limited.
  • the detection tank may also be disposed in the microchannel, and its shape may also be irregular.
  • the adhesive layer X14 may be an ultraviolet curing adhesive, a pressure sensitive double-sided adhesive or an optical grade double-sided adhesive.
  • the adhesive layer is a pressure sensitive double-sided tape.
  • the use of pressure-sensitive double-sided tape is low in cost, low in package temperature requirements, and requires no special equipment for packaging, which can improve the chip package yield.
  • the optical grade double-sided tape has a higher transmittance for light, but its cost is also higher. Those skilled in the art can choose which glue to use according to the needs.
  • the material of the substrate X11 may be a silicon wafer, or glass, or quartz, or a metal, or an alloy, or a thermoplastic polymer.
  • the silicon wafer has the advantages of good heat dissipation, high strength, moderate price, high purity and corrosion resistance, and glass has been widely used to fabricate microfluidic chips, and the microchannel network can be engraved in the glass material by using photolithography and etching techniques.
  • it has the advantages of certain strength, heat dissipation, light transmission and insulation, which is suitable for general sample analysis.
  • thermoplastic polymer mainly includes polyamide (PI), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), and the like.
  • the material of the substrate is a thermoplastic polymer polymethyl methacrylate.
  • thermoplastic polymers have lower cost and processing costs relative to materials such as silicon wafers and glass, and are suitable for large scale industrial production.
  • the material of the cover plate X13 is an optical grade polycarbonate, which can better improve the light transmittance.
  • the material of the cover plate can also be selected from the same material as the substrate.
  • the number of the light transmission holes X15 and the detection grooves X16 are respectively 1 to 30. In a preferred embodiment of the present invention, the number of the light transmission holes X15 and the detection grooves X16 are 5-30, respectively. In the embodiment shown in Figure 3, the number is thirty.
  • the number of the light-transmitting holes X15 and the detecting grooves X16 can be set according to specific or actual needs, which is not limited by the present invention. It should be understood by those skilled in the art that the size or shape of the plurality of detection holes and the detection slots may be the same or different on the same chip, and those skilled in the art may select according to actual needs, which is not limited by the present invention.
  • a reagent X17 for detecting a sample is placed in the detection tank X16.
  • the state of the reagent X17 may be a solid or a liquid, which is not limited in the present invention.
  • reagent X17 is a solid pellet.
  • the invention also provides a packaging method of a microfluidic chip.
  • the method includes:
  • Step 1 cutting the glue layer into a plurality of light-transmissive holes
  • Step 2 laminating the cut-in glue layer with the cover
  • Step 3 cutting the cover plate to which the adhesive layer is bonded into a shape having the same size as the substrate;
  • Step 4 The cover plate to which the adhesive layer is attached is subjected to a packaging process, wherein the light transmission hole corresponds to the detection groove on the substrate.
  • the material of the adhesive layer is pressure-sensitive double-sided adhesive
  • the material of the cover is optical grade polycarbonate
  • the material of the substrate is polymethyl methacrylate
  • the tool used is Stamping tool
  • Figure 4 shows the specific flow chart of the method.
  • S104 The cover plate to which the pressure sensitive double-sided tape is attached is packaged with the substrate, wherein the light transmission hole corresponds to the detection groove on the substrate.
  • the punching tools used in the above steps S101 and S103 can be the same or different, as long as the purpose of use can be achieved; in addition, the cutting method is not limited to the punching of the punching tool, and other conventional cutting holes can be used. Methods such as laser cutting, chemical etching, etc., can be selected by those skilled in the art according to actual needs.
  • 5 and 6 are respectively a cross-sectional view and a front view of the above method. Each of these steps corresponds to steps S101-S104 in FIG. 4, respectively.
  • the light transmittance of the chip in which the adhesive layer is not cut/cut through the light-transmitting hole is compared, and the optical transmittance test is performed using optical grade polycarbonate (PC).
  • the experimental instrument used in this experiment is the Celecare M1 automatic biochemical analyzer produced by Tianjin Micron Core Technology Co., Ltd. with a wavelength of 340 nm.
  • the chip to be tested comprises two groups, the group A is a PC film with no transparent holes on the double-sided adhesive layer, and the group B is a PC film with a transparent hole on the double-sided adhesive layer, and a double-sided adhesive layer is attached.
  • the two sets of PC films were fixed on the fixture, inserted into the instrument, and exposed to light source.
  • the light intensity values before and after passing through the PC film were counted to calculate the absorbance.
  • Each set of test samples was 10 pcs. Table 1 shows the test results.
  • the transmittance of the chip without the light-transmissive hole in the 340 nm band is only about 70%, and the transmittance of the chip after the gel-cutting process in the 340 nm band can reach about 89%, thereby eliminating The effect of the absorbance of the glue layer itself.
  • the chip prepared by the encapsulation method of the invention not only improves the light transmittance of the chip itself, but also improves the transmittance of the detection portion of the chip after the gel cutting process, because the solid reagent is pre-filled in the detection hole.
  • the gelation process also eliminates the effect of the glue layer itself on the reagent reaction.
  • the chip of the invention has good applications in biomedical testing, environmental testing, food hygiene testing, pharmaceutical, and chemical engineering.
  • the chip of the invention can be used for analysis in a fixed place or in the field, and can be detected by a traditional biochemical analyzer or a portable biochemical analyzer, and can simultaneously analyze multiple samples and multiple indicators.
  • biomedical testing includes detection of whole blood, plasma, urine, saliva, semen, spinal cord, and amniotic fluid in humans or animals.
  • the detection indicators include alanine aminotransferase (ALT) and aspartate aminotransferase (AST), ⁇ -glutamyltransferase ( ⁇ -GT), alkaline phosphatase (ALP), total bilirubin (TBIL), direct bilirubin (DBIt), total protein (TP), albumin ( Alb), Urea, creatinine (Cr), uric acid (UA), glucose (Glu), total cholesterol (TC), triglyceride (TG), high density lipoprotein (HDL), low density low protein (VLDL) ), very low density lipoprotein (LDL), serum magnesium (Mg), serum potassium (K), serum sodium (Na), serum chlorine (Cl), serum calcium (Ca), serum phosphorus (P), serum iron ( Fe), serum ammonia (NH), carbon dioxide (CO 2 ).
  • ALT alanine aminotransferase
  • ⁇ -GT alkaline phosphatase
  • ALP alkaline phosphatase
  • environmental testing includes water quality testing, and the detection indicators include organic substances in water, heavy metal ions, and pesticide residues;
  • food hygiene testing includes testing microorganisms, additives, pesticide residues, pollutants, and proteins in food;
  • the testing of pharmaceuticals and chemicals includes the detection of pharmaceutical ingredients and chemical products.

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Abstract

一种用于样品检测的芯片及其封装方法，包括基板（X11）和盖板（X13），基板（X11）与盖板（X13）之间通过胶层（X14）进行密封，胶层（X14）上设置有透光孔（X15），基板（X11）上设置有检测槽（X16），透光孔（X15）和检测槽（X16）相对应。该芯片可应用于生物医学检测、环境检测、食品卫生检测、制药、化工等方面。

Description

一种用于样品检测的芯片及其封装方法 技术领域
本发明涉及样品检测领域，尤其涉及一种用于样品检测的芯片及其封装方法。
背景技术
微流控芯片技术是在微米尺度的流道中精确操纵和控制纳升和皮升量级流体(生物样品流体)的新技术，应用此技术可以把化学和生物等领域中所涉及的样品制备、反应、分离、检测及细胞培养、分选、裂解等基本操作单元集成或基本集成到一块几平方厘米(甚至更小)的芯片上。
目前微流控芯片的封装方法主要分为两种，一种为直接封装法，一种为间接封装法。直接封装法是指基板与盖板之间不需要其他介质，通过芯片材料的特性直接密封的方法，比如热封法、激光焊接法、超声波焊接法，这种方法是利用热塑性材料的性质，通过加热、超声波振动等手段使塑料材质的接触面部位达到熔融的状态，然后固化将两层芯片结构封装在一起。这种微流控芯片的结构主要有两部分组成，由附图1所示，微流道12制作在基板11上，然后用盖板13将制作有微流道12的基板11封装起来，这样就使微流道12形成了相对密封的状态。间接封装法主要是通过在基板与盖板之间贴附一层中间介质，通过中间层介质的固化将两层结构密封起来。一般地，中间介质为胶层，包括UV胶、压敏胶等。附图2所示为利用胶层进行密封的一种微流控芯片的结构，其中，在设有微流道13的基板11与盖板12之间密封一层胶层14。
如专利文献CN102923643A公开了一种微流控芯片，是将涂覆一层紫外光固化胶的载玻片(即盖板)和芯片主体(即基板)进行夹紧贴合；又如专 利文献CN103495440A是通过压敏胶将微流控芯片密封起来的。
当附图2所示结构的微流控芯片应用于光学检测时，是通过待检测样本与试剂在检测槽内进行反应后通过检测其对光线的吸收程度反推样本中某种检测项目的含量。这就要求芯片材质本身对光线的吸收程度特别小以尽可能的减小材料本身对试剂吸光度的影响，故芯片的材质一般会选择透光性特别优良的材料。利用胶粘的方式进行密封的时候，选择的方案基本都是在盖板的表面进行涂覆胶层，由于胶层本身对光线也会有一定的吸收，尤其是普通的胶层(相对于光学胶而言)对光线的吸收程度比较高，从而对最后的试剂检测造成影响。
发明内容
本发明第一个目的是提供一种用于样品检测的芯片，以解决现有的芯片应用于光学检测领域时，由于材质本身对光线吸收，从而使芯片的透光率偏低，会对检测试剂结果造成误差的问题。
本发明第二个目的是提供一种用于样品检测的芯片的封装方法，以制成一种透光率较高的芯片，步骤简洁，操作简单，且芯片的封装效果好。
本发明第三个目的是提供上述用于样品检测的芯片在生物医学检测、环境检测、食品卫生检测、制药、化工方面的应用。
本发明第一方面提供了一种用于样品检测的芯片，包括基板和盖板，所述基板与所述盖板之间通过胶层进行密封，所述胶层上设置有透光孔，所述基板上设置有检测槽，所述透光孔和所述检测槽相对应。其中，检测槽和透光孔的形状可为圆形、椭圆形、正方形或其它多边形，其具体形状本领域技术人员可以依据实际需求进行选取，本发明对此不作限定。
本发明所述的芯片优选为微流控芯片，所述基板上设置有微流道。
在本发明实施方式中，所述芯片的形状为圆形、椭圆形、长方形、正方形或其它多边形。优选的，所述芯片的形状为圆形，所述基板上沿圆周设置有所述检测槽；所述胶层上沿圆周设置有与所述基板上的所述检测槽对应透 光孔。更优选的，所述检测槽沿圆周等距离设置，且检测槽中心到所述芯片圆心的距离相等。其中，检测槽的形状和大小可以相同或不同。
在本发明的实施方式中，所述胶层为紫外光固化胶、压敏双面胶或光学级双面胶。更优选的，所述胶层为压敏双面胶。
本领域技术人员可以理解，利用压敏双面胶对芯片进行密封，相对于其他的封装方案(热封、焊接等)的主要优势是成本很低，可进行大规模的工业生产，封装的过程在常温下即可进行(热封方案需要较高温度，可能会对芯片内部的试剂造成影响)，而且不需要专门的配套设备进行封装，能够提高芯片封装良品率。
本领域技术人员还可以理解，虽然光学级双面胶本身对光线的吸收很低，也可以提高芯片的整体透光性，但是光学级双面胶本身的加工成本较高，且光学双面胶本身可能会对试剂与样本反应造成影响。
在本发明的实施方式中，所述基板和盖板的材质为硅片，或玻璃，或石英，或热塑性聚合物。硅片具有散热好、强度大、价格适中、纯度高和耐腐蚀等优点，使用光刻和蚀刻技术可以将微通道网络刻在玻璃材料上，且具有一定的强度、散热性、透光性和绝缘性都比较好，适于样品分析。
其中，所述热塑性聚合物主要包括有聚酰胺(PI)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)、聚对苯二甲酸乙二醇酯(PET)、聚氯乙烯(PVC)、聚苯乙烯(PS)等。更优选的，所述基板的材质为聚甲基丙稀酸甲酯。
在本发明一个优选的实施方式中，所述盖板的材质为热塑性聚合物，更优选的，所述盖板的材质为光学级聚碳酸酯。本领域技术人员可以理解，所述盖板和基板的材质可以相同或不同。
在本发明的实施方式中，所述透光孔和所述检测槽的数目分别为1-30。优选的，所述透光孔和所述检测槽的数目分别为5-30。本领域技术人员可以理解，可以根据特定或是实际需要设置透光孔和检测槽的数目，其数量也可以大于30，本发明对此不做限定。
在本发明的实施方式中，所述检测槽中安装有用于检测样本的试剂。当该芯片应用于光学检测领域时，通过待检测样本与特定的试剂在检测槽内进行反应后通过检测其对光线的吸收程度反推样本中某种检测项目的含量。该试剂可以为固体或是液体，在本发明一个具体的方式中，该试剂为固体的小球。
在本发明一个具体的实施方式中，该芯片在340nm处的透光率为85％-90％。
本发明中的微流控芯片为层状结构，所述层状结构可以为单层或多层，包括1层、2层、3层或更多层。在一个具体的实施方式中，本发明中所述芯片的层状结构可以采用专利文献CN201210046040.0或者CN201110416978.2中所述的结构。
其中，芯片上下两层结构，上层与下层水密性地相连；上层设有用于加样的通孔；下层包括样品槽、稀释液槽、定量槽、混合槽、预装有反应试剂的反应检测槽及多组控制流体流动的微流道。
其中，芯片上层通孔用于样品和稀释液进样。芯片下层的样品槽和稀释液槽用于储存样品和稀释液，经定量槽定量后混合，通过微流道与反应检测槽相连。
芯片上层与下层之间可采用粘接、超声波焊接或者激光焊接的方式连接，反应检测槽中预装有冻干的反应试剂。
本领域技术人员可以理解，在芯片上设置微流道的目的是使该芯片集样品前处理、定量输送、反应和检测于一体，这样无需配备专业的样品前处理设备和机械手，操作简单，整个检测过程全自动化完成，无需专业人员操作，通过一次检测就可以获得多个检测指标，检测周期短。芯片体积微小，与微型化检测设备集成，可以发展出微型化、集成化和便携化的检测设备，实现现场采样分析。
在本发明一个优选的实施方式中，所述基板上设置的微流道数目为 1-100。本领域技术人员可以理解，在基板上还可以设置其他数目的微流道以适于不同需求。本发明对其个数不做限制。
在本发明一个优选的实施方式中，所述胶层上还设置有与所述微流道和/或样品槽和/或稀释液槽和/或定量槽和/或混合槽等相对应的通孔。在胶层上设置上述通孔可以消除胶层对试剂或样本可能带来的不利影响。
本发明第二方面提供了一种微流控芯片的封装方法，包括：将胶层切除若干个透光孔；将切孔处理的胶层与盖板进行贴合；将贴合有胶层的盖板切割成与基板大小相同的形状；将贴有胶层的盖板与基板进行封装处理；其中，所述透光孔与所述基板上的检测槽相对应。
优选的，所述胶层为紫外光固化胶、压敏双面胶或光学级双面胶。
优选的，所述基板和盖板的材质为硅片，或玻璃，或石英，或热塑性聚合物。其中，所述热塑性聚合物为聚酰胺(PI)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)、聚对苯二甲酸乙二醇酯(PET)、聚氯乙烯(PVC)、聚苯乙烯(PS)等。
更优选的，基板采用聚甲基丙烯酸甲酯(PMMA)，盖板采用光学级聚碳酸酯(PC)。
在本发明一个具体的实施方式中，该方法包括：
S101：利用冲压刀具将材质为压敏双面胶的胶层切除多个透光孔；
S102：将切孔处理的压敏双面胶与材质为光学级聚碳酸酯的盖板进行贴合；
S103：利用冲压刀具将贴合有压敏双面胶的盖板切割成与基板大小相同的形状；
S104：将贴合有压敏双面胶的盖板与基板进行封装处理，其中，所述透光孔与基板上的检测孔相对应。
本领域技术人员可以理解，也可采用其它切孔方式，如激光切孔、化学刻蚀等；步骤S101、S103可使用相同的切孔方式，也可以不同。
本发明第三方面提供了上述芯片在生物医学检测、环境检测、食品卫生检测、制药、化工方面的应用。
优选的，所述生物医学检测包括对人或动物的全血、血浆、尿液、唾液、精液、脊髓、羊水的检测，其中，检测指标包括丙氨酸氨基转移酶、天门冬氨酸氨基转移酶、γ-谷氨酞基转移酶、碱性磷酸酶、总胆红素、直接胆红素、总蛋白、白蛋白、尿素、肌酐、尿酸、葡萄糖、总胆固醇、甘油三酯、高密度脂蛋白、低密度脂蛋白、极低密度脂蛋白、血清镁、血清钾、血清钠、血清氯、血清钙、血清磷、血清铁、血清氨、二氧化碳；
优选的，所述环境检测包括水质检测，检测指标包括水中有机物、重金属离子、农药残留的试剂；
优选的，所述食品卫生检测包括检测食品中微生物、添加剂、农药残留、污染物、蛋白质。
优选的，所述制药、化工的检测包括对药品成分、化工产品的检测。
本发明相对于现有技术的有益效果：
1、本发明提供的一种微流控芯片，通过在盖板和基板之间密封用的胶层上开设透光孔，并对应基板上的检测槽，从而使这种芯片的透光率增大而且能够消除胶层对试剂和样本反应时可能带来的不利影响，提高了光学检测的灵敏度和准确性，增大了芯片在不同领域的应用。
2、本发明提供的一种微流控芯片的封装方法，不仅步骤简洁，操作简单，而且能够对该种芯片进行批量封装，采用本发明封装方法制得的芯片，透光率高，提高了光学检测的灵敏度和准确度。
附图说明
为了使本发明的内容更容易被清楚的理解，下面根据本发明的具体实施例并结合附图，对本发明作进一步详细的说明，其中:
图1是现有技术提供的一种微流控芯片的基本结构示意图。
图2是现有技术提供的一种具有胶层的微流控芯片的结构示意图。
图3是本发明实施例提供的一种微流控芯片的结构示意图。
图4是本发明实施例提供的一种微流控芯片的封装方法的流程图。
图5是本发明实施例提供的一种微流控芯片的封装方法的剖面图。
图6是本发明实施例提供的一种微流控芯片的封装方法的主视图。
附图标记说明：X11-基板；X12-微流道；X13-盖板；X14-胶层；X15-透光孔；X16-检测槽；X17-试剂。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图3是本发明实施例提供的一种用于样品检测芯片的结构示意图。如图3所示，该芯片包括基板X11和盖板X13，基板X11和盖板X13的形状大小相同；基板X11与盖板X13之间通过胶层X14进行密封，胶层X14上设置有透光孔X15，基板X11上设置有检测槽X16，透光孔X11和检测槽X16相对应。
本发明实施方式中，该芯片为微流控芯片，基板X11上设置有微流道X12。
本发明实施方式中，芯片可以做成圆形、长方形、正方形或其它多边形。图3所示的实施方式中，芯片为圆形；基板X11上沿圆周设置有检测槽X16；为了便于检测，检测槽X16的中心到芯片圆心的距离相等；胶层X14上沿圆周设置有与基板X11上的检测槽X16对应的透光孔X15。
本发明实施方式中，微流控芯片可为层状结构，该层状结构可以为单层或多层，包括1层、2层、3层或更多层。在一个具体的实施方式中，本发 明中所述芯片的层状结构可以采用专利文献CN201210046040.0或者CN201110416978.2中所述的结构：其中，芯片上下两层结构，上层与下层水密性地相连；上层设有用于加样的通孔；下层包括样品槽、稀释液槽、定量槽、混合槽、预装有反应试剂的反应检测槽及多组控制流体流动的微流道；其中，芯片上层通孔用于样品和稀释液进样；芯片下层的样品槽和稀释液槽用于储存样品和稀释液，经定量槽定量后混合，通过微流道与反应检测槽相连；芯片上层与下层之间可采用粘接、超声波焊接或者激光焊接的方式连接，反应检测槽中预装有冻干的反应试剂。本领域技术人员可以根据实际需求对芯片的结构进行改造，本发明对此不作限定。
本发明实施方式中，胶层X14上还设置有与基板的微流道X12和/或样品槽和/或稀释液槽和/或定量槽和/或混合槽等相对应的通孔。在胶层上设置上述通孔可以消除胶层对试剂或样本可能带来的不利影响。
本发明实施方式中，检测槽的形状可为圆形、椭圆形、方形或其它多边形(图3所示为圆形和方形)，本领域技术人员可以依据实际需求进行选取，本发明对检测槽的形状不作限定。当某些情况下，检测槽也可设置在微流道中，其形状也可为不规则形状。
在本发明实施方式中，胶层X14可以为紫外光固化胶、压敏双面胶或光学级双面胶。图3所示的实施方式中，胶层为压敏双面胶。使用压敏双面胶成本低，封装温度要求也低，而且不需要专门的配套设备进行封装，能够提高芯片封装良品率。而光学级双面胶对光线的透过率更高，但是其成本也较高。本领域技术人员可以根据需求选择使用哪种胶类。
在本发明实施方式中，基板X11的材质可以为硅片，或玻璃，或石英，或金属，或合金，或热塑性聚合物。其中，硅片具有散热好、强度大、价格适中、纯度高和耐腐蚀等优点，而玻璃己被广泛用于制作微流控芯片，使用光刻和蚀刻技术可以将微通道网络刻在玻璃材料上，它的优点是有一定的强度、散热性、透光性和绝缘性都比较好，很适合通常的样品分析。
热塑性聚合物主要包括有聚酰胺(PI)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)、聚对苯二甲酸乙二醇酯(PET)等。图3所示的实施方式中，基板的材质为热塑性聚合物聚甲基丙稀酸甲酯。本领域技术人员可以理解，热塑性聚合物相对于硅片和玻璃等材料，成本和加工制作费用更低，且适于大规模的工业生产。
在图3所示的实施方式中，盖板X13的材质为光学级聚碳酸酯，这样能够更好的提高光的透过率。本领域技术人员可以理解，盖板的材质也可以选用与基板同样的材质。在本发明实施方式中，透光孔X15和检测槽X16的数目分别为1-30，在本发明一个优选的实施方式中，透光孔X15和检测槽X16的数目分别为5-30。在图3所示的实施方式中，该数目为30。
本领域技术人员可以理解，可以根据特定或是实际需要设置透光孔X15和检测槽X16的数目，本发明对此不做限定。本领域技术人员也应当理解，在同一个芯片上，多个检测孔和检测槽的大小或形状可以相同或不同，本领域技术人员可以依据实际需求进行选取，本发明对此不作限定。
在本发明一个实施方式中，检测槽X16中放置有用于检测样本的试剂X17。试剂X17的状态可以为固体或液体，本发明对此不做限制。在图3所示的实施方式中，试剂X17为固体小球。
本发明还提供了一种微流控芯片的封装方法。该方法包括：
步骤1：将胶层切除若干个透光孔；
步骤2：将切孔处理的胶层与盖板进行贴合；
步骤3：将贴合有胶层的盖板切割成与基板大小相同的形状；
步骤4：将贴合有胶层的盖板与基板进行封装处理，其中所述透光孔与基板上的检测槽相对应。
在本发明一个具体的实施方式中，胶层的材质为压敏双面胶，盖板的材质为光学级聚碳酸酯，基板的材质为聚甲基丙稀酸甲酯，所运用的工具为冲压刀具，图4所示为该方法的具体流程图。
S101：利用冲压刀具将材质为压敏双面胶的胶层均匀切除多个透光孔；
S102：将切孔处理的压敏双面胶与材质为光学级聚碳酸酯的盖板进行贴合；
S103：利用冲压刀具将贴合有压敏双面胶的盖板切割成与材质为聚甲基丙稀酸甲酯的基板大小相同的形状；
S104：将贴合有压敏双面胶的盖板与基板进行封装处理，其中所述透光孔与基板上的检测槽相对应。
本领域技术人员可以理解，上述步骤S101和S103所使用的冲压刀具可以相同也可以不同，只要能达到使用目的即可；此外，切孔方式不仅限于冲压刀具切孔，也可使用其它常规切孔方式如激光切孔、化学刻蚀等，本领域技术人员可以依据实际需求进行选取。
图5和图6分别为上述方法的形象化的剖面图和主视图。其中的每一个步骤分别对应图4中的步骤S101-S104。
本发明对胶层未切除/切除透光孔的芯片的透光性进行对比，采用光学级聚碳酸酯(PC)进行透光性检测。本实验所采用的实验仪器为天津微纳芯科技有限公司生产的Celecare M1全自动生化分析仪，波长为340nm。其中，待测芯片包括两组，A组为双面胶层未开有透光孔的PC薄膜，B组为双面胶层开有透光孔的PC薄膜，将贴附有双面胶层的两组PC薄膜固定在治具上，插入仪器中，进行光源曝光检测，统计透过PC薄膜前后的光强数值，从而计算出吸光度，每组测试样品10pcs，表1为测试结果。
表1透光性实验的对比数据
Figure PCTCN2016076986-appb-000001
Figure PCTCN2016076986-appb-000002
通过上述对比实验发现，未开有透光孔的芯片在340nm波段的透光率只有70％左右，而进行切胶处理之后的芯片其在340nm波段的透光率可达到89％左右，从而消除了胶层本身吸光度的影响。采用本发明封装方法制备的芯片不仅提高了芯片本身的透光率，而且进行切胶处理后，也可提高芯片检测部位透光率的一致性，因为检测孔内会预先放入固体的试剂，进行切胶处理也会消除胶层本身对试剂反应的影响。
本发明中的芯片在生物医学检测、环境检测、食品卫生检测、制药、化工方面均有良好的应用。本发明的芯片可用于固定场所或野外现场分析，可以采用传统生化分析仪，也可以采用便携式生化分析仪对其进行检测，能够对多样品、多指标进行同时分析。其中，生物医学检测包括对人或动物的全血、血浆、尿液、唾液、精液、脊髓、羊水的检测，检测指标包括丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、γ-谷氨酞基转移酶(γ-GT)、碱性磷酸酶(ALP)、总胆红素(TBIL)、直接胆红素(DBIt)、总蛋白(TP)、白蛋白(Alb)、尿素(Urea)、肌酐(Cr)、尿酸(UA)、葡萄糖(Glu)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL)、低密度低蛋白(VLDL)、极低密度脂蛋白(LDL)、血清镁(Mg)、血清钾(K)、血清钠(Na)、血清氯(Cl)、血清钙(Ca)、血清磷(P)、血清铁(Fe)、血清氨(NH)、二氧化碳(CO2)。
其中，环境检测包括水质检测，检测指标包括水中有机物、重金属离子、农药残留的试剂；
其中，食品卫生检测包括检测食品中微生物、添加剂、农药残留、污染物、蛋白质；
其中，制药、化工的检测包括对药品成分、化工产品的检测。
上述实施例只为说明本发明的技术构思及特点，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换等，均应包含在本发明的保护范围之内。

Claims (11)

  1. 一种用于样品检测的芯片，其特征在于，包括基板和盖板，所述基板与所述盖板之间通过胶层进行密封，所述胶层上设置有透光孔，所述基板上设置有检测槽，所述透光孔和所述检测槽相对应。
  2. 根据权利要求1所述的用于样品检测的芯片，其特征在于，所述的芯片为微流控芯片，所述基板上设置有微流道。
  3. 根据权利要求2所述的用于样品检测的芯片，其特征在于，所述芯片为圆形；所述基板上沿圆周设置有所述检测槽；所述胶层上沿圆周设置有与所述基板上的所述检测槽相对应的所述透光孔。
  4. 根据权利要求1所述的用于样品检测的芯片，其特征在于，所述胶层为紫外光固化胶、压敏双面胶或光学级双面胶。
  5. 根据权利要求1所述的用于样品检测的芯片，其特征在于，所述基板和/或盖板的材质为硅片，或玻璃，或石英，或金属，或合金，或热塑性聚合物。
  6. 根据权利要求5所述的用于样品检测的芯片，其特征在于，所述热塑性聚合物包括有聚酰胺、聚甲基丙烯酸甲酯、聚碳酸酯、聚对苯二甲酸乙二醇酯、聚氯乙烯、聚苯乙烯。
  7. 根据权利要求5所述的用于样品检测的芯片，其特征在于，所述盖板的材质为光学级聚碳酸酯。
  8. 根据权利要求1-7任一项所述的用于样品检测的芯片，其特征在于，所述检测槽中放置有用于检测样本的试剂，所述试剂的状态为固体或液体。
  9. 一种用于样品检测的芯片的封装方法，其特征在于，包括：将胶层切除若干个透光孔；将切孔处理的胶层与盖板进行贴合；将贴合有胶层的盖板切割成与基板大小相同的形状；将贴合有胶层的盖板与基板进行封装处 理，其中，所述透光孔与基板上的检测槽相对应。
  10. 根据权利要求9所述的用于样品检测的芯片的封装方法，其特征在于，包括：利用冲压刀具将材质为压敏双面胶的胶层均匀切除多个透光孔；将切孔处理的压敏双面胶与材质为光学级聚碳酸酯的盖板进行贴合；利用冲压刀具将贴合有压敏双面胶的盖板切割成与材质为聚甲基丙稀酸甲酯的基板大小相同的形状；将贴合有压敏双面胶的盖板与基板进行封装处理，其中，所述透光孔与基板上的检测槽相对应。
  11. 权利要求1-8任一项所述的用于样品检测的芯片在生物医学检测、环境检测、食品卫生检测、制药、化工方面的应用。
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