CN102455312A - Electrochemical test piece - Google Patents
Electrochemical test pieceDownload PDFInfo
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- CN102455312A CN102455312ACN2010105273581ACN201010527358ACN102455312ACN 102455312 ACN102455312 ACN 102455312ACN 2010105273581 ACN2010105273581 ACN 2010105273581ACN 201010527358 ACN201010527358 ACN 201010527358ACN 102455312 ACN102455312 ACN 102455312A
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Abstract
Description
Technical field
The relevant a kind of detection test piece of the present invention is particularly about a kind of Electrochemical Detection test piece.
Background technology
Because the development of mechanical & electrical technology when a detection of biological corpse or other object for laboratory examination and chemical testing, uses the electric chemical formula or the reaction of optical profile type to detect mostly.Utilize the situation of the former (galvanochemistry) reaction; For example, when detecting blood sugar, with glucose oxidase (the glucose oxidase that carries in glucose in the blood sample and the test test piece; GOD) carry out redox reaction; By signals such as electronics that is produced in the redox reaction or electric currents, the glucose content so that reaction is participated in detecting is converted into blood sugar concentration by this.And utilize the situation of latter's (optics) reaction, and then can cause the change color of testing test piece with ferment reaction back by glucose, by colourimetry the change color amount is converted into blood sugar concentration again.
And adopt the detection test piece of electrochemical reaction at present, owing to need the signals such as electronic current that produced in the detecting reaction, therefore need conductive electrode and receive these signals, and conduct in the surveying instrument and convert.The conductive electrode of prior art has at copper electrode plated with nickel and palladium, or with coating activated carbon layer after the elargol printing to process electrode.Because copper electrode utilizes modes such as plating more on making, follow-up nickel and palladium are plated on the copper metal layer, cost of manufacture is higher.In addition, also utilize modes such as vapor deposition or sputter, directly be plated in inert metal (gold, platinum, palladium) on the substrate; The follow-up etch process that re-uses is removed unnecessary part; Only stay the circuit part that needs, this processing procedure then can cause more material deterioration inside, and more promotes manufacturing cost.On the elargol circuit that prints, be coated with activated carbon layer to process the mode of electrode but be to use; Though modes such as more aforementioned employing plating of cost or vapor deposition sputter are low; But made detection test piece; More aforementioned employing inert metal is the outer field detection test piece of electrode, and precision and degree of stability when measuring are not good, makes on the contrary will expend extra cost on the QC (QC).
Summary of the invention
For overcoming above-mentioned shortcoming, the present invention provides a kind of Electrochemical Detection test piece, includes substrate and is arranged at the conductive electrode on the substrate.Conductive electrode then includes conductive rubber layer, the first metal layer of storehouse in regular turn, second metal level, and the 3rd metal level.Conductive rubber can be copper glue, nickel glue, elargol, silver-colored carbon paste or carbon paste; The first metal layer then is made up of the group VIII metal; Second metal level then is made up of nickel; And the 3rd metal level to be palladium (Pd), gold (Au) or platinum (Pt) metal form.
Therefore, fundamental purpose of the present invention provides a kind of Electrochemical Detection test piece, owing to adopt conductive rubber, therefore is easy to make, and can effectively reduce cost.
Another object of the present invention provides a kind of Electrochemical Detection test piece, owing to be to form the electrode skin with palladium, gold or platinum, therefore can effectively promote the susceptibility and the specificity of measurement.
In addition, the present invention also provides another kind of Electrochemical Detection test piece, includes substrate and is arranged at the conductive electrode on the substrate.Conductive electrode then includes conductive rubber layer, the first metal layer of storehouse in regular turn, second metal level, and the 3rd metal level.Conductive rubber can be copper glue, nickel glue, elargol, silver-colored carbon paste or carbon paste, and the conductive rubber layer is to be printed on the substrate via printing-flow.The first metal layer then is made up of the group VIII metal, and is after the substrate that will be printed with the conductive rubber layer is starched cleaning and pickling program through electricity, is plated on the conductive rubber layer through the electroless plating mode again.Second metal level then is made up of nickel, and is plated on the first metal layer through the electroless plating mode.Form and the 3rd metal level is palladium, gold or platinum, and be plated on second metal level through the electroless plating mode.
Another object of the present invention provides a kind of Electrochemical Detection test piece, owing to adopt mode of printing that conductive rubber is printed on the substrate, therefore is easy to make, and can effectively reduce cost.
Another object of the present invention provides a kind of Electrochemical Detection test piece, owing to be to form the electrode skin with palladium, gold or platinum, therefore can effectively promote the susceptibility and the specificity of measurement.
Description of drawings
Figure 1A is the present invention's first preferred embodiment Electrochemical Detection test piece synoptic diagram.
Figure 1B is the present invention's first preferred embodiment Electrochemical Detection test piece diagrammatic cross-section.
Fig. 2 A is the present invention's second preferred embodiment Electrochemical Detection test piece synoptic diagram.
Fig. 2 B is the present invention's second preferred embodiment Electrochemical Detection test piece diagrammatic cross-section.
[primary clustering symbol description]
ElectrochemicalDetection test piece 1,2
Conductive rubber layer 120,220
The first metal layer 121,221
Second metal level 122,222
The 3rd metal level 123,223
Conductingregion 22b
Insullac 2201
Embodiment
Owing to the invention discloses a kind of Electrochemical Detection test piece, wherein institute's electrochemical principle that utilizes and circuit printing technology have been that those of ordinary skills can understand, so with hereinafter explanation, no longer do complete description.Simultaneously,, be intended to express the implication relevant, also do not need according to the complete drafting of practical situation, explanation formerly with characteristic of the present invention with the accompanying drawing that is hereinafter contrasted.
At first, please refer to Figure 1A, be the present invention's first preferred embodiment Electrochemical Detection test piece synoptic diagram.Electrochemical Detection test piece 1 includessubstrate 11 and is layed in theconductive electrode 12 on thesubstrate 11, onconductive electrode 12, is covered with insulation course 13.Wherein the material ofsubstrate 11 can be polyethylene terephthalate (PET), polycarbonate biologically inert plastics (bio-inert plastic) materials such as (PC), also can adopt pi (polyimide), glass mat or bakelite plate (phenolics).
Please refer to Figure 1B, for Electrochemical Detection test piece 1 among Figure 1A along the diagrammatic cross-section of AA line.The formation ofconductive electrode 12, shown in figure, bysubstrate 11 upwards, storehouse has conductive rubber layer 120, the first metal layer 121, second metal level 122 and the 3rd metal level 123 in regular turn.Conductive rubber layer 120 is then for containing the resin colloid of metallic conductor or carbon particle; Its material can be copper glue (copper paste), nickel glue (nickel paste), elargol (silver paste), silver-colored carbon paste (resin glue that contains silver particles and carbon particle) or carbon paste, and adopts mode of printing that conductive rubber layer 120 is printed on the substrate 11.The material of second metal level 122 then adopts nickel.In addition; After printing conductive colloid layer 120; Can will be printed on the substrate 10 of conductive rubber layer 120,, utilize electricity slurry (plasma) to remove the impurity of conductive rubber through cleaning procedure; And again by the surface active of pickling program, in order to the making of follow-up the first metal layer 121, second metal level 122 and the 3rd metal level 123 with conductive rubber layer 120.
In addition, because the conductive material among the conductive rubber layer 120, as stated; Be to use copper, nickel, silver, carbon, or silver-colored carbon paste, therefore in order to adopt the mode storehouse of electroless plating to get on the nickel and the 3rd metal level 123 of second metal level 122; The material of the first metal layer 121 then is to use the group VIII metal, that is to use nickel (nickel, Ni), palladium (Palladium; Pd) or platinum (Platinum, Pt) metal; Wherein, better for the electroless plating effect of follow-up second metal level 122 and the 3rd metal level 123 again to use the situation of palladium.In addition; When the material of employed colloidal pitch is identical with the substrate material that gets on of printing then in the conductive rubber layer 120 (for example the material of colloidal pitch all is polyethylene terephthalates insubstrate 11 and the conductive rubber layer 120), better for the effect of follow-up electroless plating of carrying out the first metal layer 121.In addition, the print thickness of conductive rubber layer 120 also can influence the result of the electroless plating of the first metal layer 121.
In order to want to let the electronics that is produced in the electrochemical reaction successfully be transmitted toconductive electrode 12; Measure and corresponding test substance concentration conversion in order to follow-up signal; The material of the 3rd metal level 123 is to use palladium, gold or platinum etc. to have the metal of satisfactory electrical conductivity; Be the best to use the made Electrochemical Detection test piece 1 of platinum using the precision of measuring again wherein, and platinum itself can be used as catalyst, help the generation of electrochemical reaction.Though use the best results of platinum, higher because of the material cost of platinum, therefore, measure under the balance consideration of precision in material cost and test piece, also can adopt the material of gold as the 3rd metal level 123.
In addition; Except as above-mentioned first preferred embodiment shown in; In whole piececonductive electrode 12, all be coated with the situation (that is being to be plated in above the whole conductive rubber layer 120) of the first metal layer 121, second metal level 122 and the 3rd metal level 123; Also actual conditions be can according to, the first metal layer 121, second metal level 122 and the 3rd metal level 123 only plated in the part zone ofconductive electrode 12.
Therefore, second preferred embodiment of the present invention also is a kind of Electrochemical Detection test piece.Please refer to Fig. 2 A, the Electrochemical Detection test piece 1 described in the ElectrochemicalDetection test piece 2 and first preferred embodiment is roughly the same, also includessubstrate 21 and is layed in theconductive electrode 22 on thesubstrate 21, and onconductive electrode 22, be covered with insulation course 23.With the first preferred embodiment difference be theconductive electrode 22 of ElectrochemicalDetection test piece 2, further includereaction zone 22a, insertdistrict 22c, and betweenreaction zone 22a with insert the conductingregion 22b that distinguishes between the 22c.Then be coated withreaction material 24 on thereaction zone 22a,, produce signals such as electronic current by this for carrying out electrochemical reaction with the test substance (not shown); And at the electronic current signal thatreaction zone 22a is produced, be to conduct to via conductingregion 22b to insert district22c.Inserting district 22c then is the zone that electrochemicalreaction test piece 2 is connected with the surveying instrument (not shown).When reality is used, insertdistrict 22c can by with being connected of surveying instrument (not shown), the electronic current signal is sent to carries out computing in the surveying instrument, be converted into the information such as concentration of test substance by this.
Please, be the diagrammatic cross-section of the ElectrochemicalDetection test piece 2 shown in Fig. 2 A along the BB line again with reference to figure 2B.Shown in figure, onsubstrate 21, then be thatautoreaction district 22a, conductingregion 22b are until bondingpad 22c is printed with conductive rubber layer 220.And in thebonding pad 22c place, onconductive rubber layer 220, directly be covered with insulation course 23.And atreaction zone 22a place, then be from theconduction colloid layer 220 in regular turn storehouse thefirst metal layer 221,second metal level 222 and the3rd metal level 223 are arranged.
In addition, can be according to the actual requirements, with thefirst metal layer 221,second metal level 222 and the3rd metal level 223 of storehouse are arranged at 22c place, bonding pad in regular turn; Or further thefirst metal layer 221,second metal level 222 and the3rd metal level 223 are arranged onreaction zone 22a andbonding pad 22c two places.
Above-mentioned design promptly is in electrochemicalreaction test piece 2, is not as being all to be coated with thefirst metal layer 221,second metal level 222 and the3rd metal level 223 along whole piececonductive rubber layer 220 in first preferred embodiment.Becausereaction zone 22a is coated withreaction material 24; Test substance (not shown) andreaction material 24 carry out the electronics or the electric current that are produced after the electrochemical reaction; Need conduct on theconductive electrode 22 ofreaction zone 22a; Therefore need the conductor metal of satisfactory electrical conductivity here, reduce the signal to noise ratio (S/N ratio) (Signal/Noise Ratio) of impedance andconductive electrode 22 by this, to promote the susceptibility (sensitivity) and the specificity (specificity) of electrochemicalreaction test piece 2 on measuring.In addition; Because theconductive electrode 22 ofbonding pad 22c is need signals such as electronics or electric current be sent to carry out computing in the surveying instrument; Therefore use conductor metal here, also help to promote the susceptibility and the specificity of electrochemicalreaction test piece 2 on measuring with satisfactory electrical conductivity.
Therefore, when making, can printconductive rubber layer 220, after cleaning of electricity slurry and pickling program, spray or be coated with last layer insullac 2201 at theconductive rubber layer 220 at conductingregion 22b place at substrate 21.By this; Let theconductive rubber layer 220 at conductingregion 22b place in follow-up electroless plating processing procedure; Can not contact with the employed reaction solution of electroless plating again; Make theconductive rubber layer 220 metal plated layer no longer at conductingregion 22b place, can effectively save inert metal required in thefirst metal layer 221,second metal level 222 and the 3rd metal level 223 (for example gold, platinum, palladium) consumption, to reduce manufacturing cost.
In addition;Substrate 21 described in second preferred embodiment,conductive rubber layer 220, thefirst metal layer 221,second metal level 222 and the3rd metal level 223; Its material and preferable configuration status no longer repeat to give unnecessary details at this then with roughly the same described in first preferred embodiment.
The present invention further provides the 3rd preferred embodiment, and its structure is identical with first preferred embodiment, so please refer to Figure 1A and Figure 1B.The Electrochemical Detectiontest piece 11 that the 3rd preferred embodiment among the present invention is provided includessubstrate 11 and is layed in theconductive electrode 12 on thesubstrate 11, onconductive electrode 12, is covered with insulation course 13.And the formation ofconductive electrode 12, then bysubstrate 11 upwards, storehouse has conductive rubber layer 120, the first metal layer 121, second metal level 122 and the 3rd metal level 123 in regular turn.
Conductive rubber layer 120 can be copper glue, nickel glue, elargol, silver-colored carbon paste, or carbon paste forms, and conductive rubber layer 120 is to be printed on thesubstrate 11 via printing-flow.121 of the first metal layers are made up of the group VIII metal, and be through thesubstrate 11 that will be printed with conductive rubber layer 120 clean through the electricity slurry with the pickling program after, be plated on the conductive rubber layer 120 through the electroless plating mode again.122 of second metal levels are made up of nickel.And being palladium, gold or platinum, the 3rd metal level 123 forms.And second metal level 122 and the 3rd metal level 123 likewise are to be plated on respectively on the first metal layer 121 and second metal level 122 through the electroless plating mode.In addition; 121 of the first metal layers are that conductive rubber layer 120 and process electricity slurry clean and thesubstrate 11 of pickling program with being printed with; Be dipped in the electrolytic solution that contains the group VIII metallic ion; The ion concentration of the group VIII metal in temperature, time and the electrolytic solution of control electrolysis and the pH value of electrolytic solution are plated in the first metal layer 121 on the conductive rubber layer 120 at proper range.And the electroless plating mode of second metal level 122 and the 3rd metal level 123; Then the electroless plating mode with the first metal layer 121 is similar; Just when being plated to second metal level 122 on the first metal layer 121; Be that thesubstrate 11 that will plate the first metal layer 121 is dipped in the electrolytic solution that contains nickel ion; The 3rd metal level 123 is plated insubstrate 11 that 122 last times of second metal level then will plate second metal level 122 and is dipped into that to contain be in the electrolytic solution of palladium, gold or platinum ion, and the pH value of concentration of metal ions that will plate in temperature, time and the electrolytic solution of control electrolysis and electrolytic solution is at proper range.
The above is merely preferred embodiment of the present invention, is not in order to limit the right of applying for a patent of the present invention; Simultaneously above description should be understood and implemented for those of ordinary skills, so other does not break away from the equivalence of being accomplished under the disclosed spirit and change or modification, all should be included in the claim.
Claims (6)
1. Electrochemical Detection test piece includes:
One substrate; And
One conductive electrode is established as on this substrate, and wherein this conductive electrode includes storehouse in regular turn:
One conductive rubber layer, this conductive rubber are selected from the group that is made up of copper glue, nickel glue, elargol, silver-colored carbon paste and carbon paste;
One the first metal layer, this first metal are a group VIII metal;
One second metal level, this second metal is a nickel; And
One the 3rd metal level, the 3rd metal are selected from the group that is made up of palladium (Pd), gold (Au) and platinum (Pt).
2. Electrochemical Detection test piece according to claim 1, wherein this first metal is a palladium.
3. Electrochemical Detection test piece according to claim 1, wherein the 3rd metal is gold or platinum.
4. Electrochemical Detection test piece according to claim 1; Wherein this conductive electrode includes a reaction zone, an insertion district; And the conducting region between this insertion district and this reaction zone; This conductive rubber layer is arranged at this reaction zone, this insertion district and this bonding pad, and this conducting region further includes an insulation course and is arranged on this conductive rubber layer, and this this first metal layer, this second metal level and the 3rd metal level of storehouse are arranged on this reaction zone or this bonding pad in regular turn.
5. Electrochemical Detection test piece according to claim 4 further includes a reaction material, coats this reaction zone of this conductive electrode.
6. Electrochemical Detection test piece includes:
One substrate; And
One conductive electrode is established as on this substrate, and wherein this conductive electrode includes storehouse in regular turn:
One conductive rubber layer, this conductive rubber are selected from the group that is made up of copper glue, nickel glue, elargol, silver-colored carbon paste and carbon paste, and this conductive rubber layer is to be printed on this substrate through a printing-flow;
One the first metal layer, this first metal are a VIII family metal, and this first metal layer be through this substrate of this being printed with this conductive rubber layer through an electricity slurry clean with the pickling program after, be plated on this conductive rubber layer through the electroless plating mode again;
One second metal level, this second metal is a nickel, and this second metal level is to be plated on this first metal layer through the electroless plating mode; And
One the 3rd metal level, the 3rd metal are selected from the group that is made up of palladium (Pd), gold (Au) and platinum (Pt), and the 3rd metal level is to be plated on second metal level through the electroless plating mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105273581ACN102455312A (en) | 2010-10-26 | 2010-10-26 | Electrochemical test piece |
| CN201410218971.3ACN103995030B (en) | 2010-10-26 | 2010-10-26 | Manufacturing method of electrochemical detection test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105273581ACN102455312A (en) | 2010-10-26 | 2010-10-26 | Electrochemical test piece |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410218971.3ADivisionCN103995030B (en) | 2010-10-26 | 2010-10-26 | Manufacturing method of electrochemical detection test piece |
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| Publication Number | Publication Date |
|---|---|
| CN102455312Atrue CN102455312A (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105273581APendingCN102455312A (en) | 2010-10-26 | 2010-10-26 | Electrochemical test piece |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165534A1 (en)* | 2014-04-30 | 2015-11-05 | Galvanic Limited | An electrodermal activity sensor |
| CN105466985A (en)* | 2014-08-28 | 2016-04-06 | 立威生技实业股份有限公司 | Electrode for biological detection test piece and manufacturing method thereof |
| TWI650556B (en)* | 2016-12-28 | 2019-02-11 | 大陸商業成科技〈成都〉有限公司 | Blood glucose test piece and preparation method thereof |
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| CN1745194A (en)* | 2003-01-28 | 2006-03-08 | 传导喷墨技术有限公司 | Method of forming a conductive metal region on a substrate |
| CN1898413A (en)* | 2003-12-05 | 2007-01-17 | 传导喷墨技术有限公司 | Formation of layers on substrates |
| CN101320035A (en)* | 2007-05-21 | 2008-12-10 | 台达电子工业股份有限公司 | Biosensor and composition thereof |
| CN101750443A (en)* | 2009-12-31 | 2010-06-23 | 立威生技实业股份有限公司 | Biological detection test piece electrode, manufacturing method thereof and biological detection test piece |
| TW201217775A (en)* | 2010-10-18 | 2012-05-01 | Yutek Tronic Inc | Electro-chemical test strip |
- 2010
- 2010-10-26CNCN2010105273581Apatent/CN102455312A/enactivePending
Patent Citations (6)
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| CN1745194A (en)* | 2003-01-28 | 2006-03-08 | 传导喷墨技术有限公司 | Method of forming a conductive metal region on a substrate |
| CN1548952A (en)* | 2003-05-07 | 2004-11-24 | 黄椿木 | Structure of disposable electrochemical sensing test piece and manufacturing method thereof |
| CN1898413A (en)* | 2003-12-05 | 2007-01-17 | 传导喷墨技术有限公司 | Formation of layers on substrates |
| CN101320035A (en)* | 2007-05-21 | 2008-12-10 | 台达电子工业股份有限公司 | Biosensor and composition thereof |
| CN101750443A (en)* | 2009-12-31 | 2010-06-23 | 立威生技实业股份有限公司 | Biological detection test piece electrode, manufacturing method thereof and biological detection test piece |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165534A1 (en)* | 2014-04-30 | 2015-11-05 | Galvanic Limited | An electrodermal activity sensor |
| CN105466985A (en)* | 2014-08-28 | 2016-04-06 | 立威生技实业股份有限公司 | Electrode for biological detection test piece and manufacturing method thereof |
| TWI650556B (en)* | 2016-12-28 | 2019-02-11 | 大陸商業成科技〈成都〉有限公司 | Blood glucose test piece and preparation method thereof |
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