CN102752893B - Electroluminescent display device for high-voltage measurement - Google Patents
Electroluminescent display device for high-voltage measurement Download PDFInfo
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- CN102752893B CN102752893B CN201210233438.5A CN201210233438A CN102752893B CN 102752893 B CN102752893 B CN 102752893B CN 201210233438 A CN201210233438 A CN 201210233438A CN 102752893 B CN102752893 B CN 102752893B
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Abstract
The invention relates to an electroluminescent display device for high-voltage measurement. The electroluminescent display device comprises a core wire electrode layer, an insulation layer, an electroluminescent material layer, a transparent conductive layer, an electrode of the transparent conductive layer and a transparent plastic layer with characters. The electroluminescent display device is characterized in that at least one of the core wire electrode layer, the insulation layer and the electroluminescent material layer is constituted by different thickness or diameter distribution, the insulation layer is uniformly coated on the surface of a core wire electrode, the electroluminescent material layer is coated on the outer surface of the insulation layer, the transparent conductive layer is coated outside the electroluminescent material layer, the transparent conductive layer is in contact with the electrode of the transparent conductive layer and is sealed by the transparent plastic layer, and the marking characters are arranged on the surface of the transparent plastic layer; and after the core wire electrode and the electrode of the transparent conductive layer are connected with high-voltage alternating current, the marking characters can emit light in different degrees of brightness, so that the numerical range of the voltage can be determined. The electroluminescent display device can be used for the display of technical data in power transmission, maintenance, manufacturing, installation and debugging processes.
Description
Technical field
The invention belongs to voltage sensor applied technical field.
Background technology
High-tension detection technique is the important technology data in electric power transfer, maintenance, manufacture, installation, debug process, daily high-tension detection majority is completed by all kinds of voltage sensor, existing voltage sensor numerically provides result after connecting communication line and data processing, their advantage be data accurately, be easy to gather, as: based on the voltage sensor etc. of hall principle.But existing voltage test device has general weak point, they all cannot direct simple and easy observed reading, as field work at night, and can only by equipment instrument determination voltage value.
The present invention uses electroluminescent technology, and testing staff directly judges voltage range according to luminous intensity vision, and it can be arranged on power equipment junction, can be used in the voltage instruction of indoor outer power equipment, especially just can identify at a distance at night.
Electroluminescent technology is also known as electro-luminescent technology, cold light technology, EL luminescence technology etc., it is a kind of high voltage operation luminescent device, its form is mainly divided into planar device, linear unit, the present invention utilizes the linear device technology principle of electroluminescence, its profile and ordinary telephone line similar, top layer is color fluorescence sleeve pipe, luminous continuously without any thermal radiation during its work, power consumption is lower, possess soft, collapsible bending, the features such as random knotting, reduction, splicing, therefore can by people's extensive use.
Its structure of existing electro luminescence line is mainly: metal-cored electrode, insulating medium layer, luminescent layer, transparency conducting layer, winding external electrode.Metal-cored electrode is energized with winding external electrode and then produces luminescence, and this structure, material, formula have had at Chinese patent 01133342.1,200680032428.8,200410099233.8 etc. clearly sets forth.But it cannot bear extra-high pressure due to structure and problem of materials.The present invention, by changing shape and structure, prepares baroluminescence sensor component, may be used for the technical data display in electric power transfer, maintenance, manufacture, installation, debug process.
Summary of the invention
A kind of electro-luminescence display device for high voltage measuring of the present invention, it comprises: heart yearn electrode layer 1, insulating barrier 2, electroluminescent material layer 3, transparency conducting layer 4, transparency conducting layer electrode 6, clarity plastic layer 5 with character; It is characterized in that: in heart yearn electrode layer, insulating barrier, electroluminescent material layer, have at least one to be that different-thickness or diameter distribution are formed, the heart yearn electrode layer of different-diameter, the insulating barrier of different-thickness, the electroluminescent material layer of different-thickness, wherein one deck is with stepped or ramped shaped distribution arbitrarily, and other layer is then homogeneous diameter distribution.Heart yearn electrode surface evenly scribbles the insulating barrier of different-thickness, insulating barrier appearance coating electroluminescent material layer, electroluminescent material layer is coated with transparency conducting layer outward, and transparency conducting layer contacts with transparency conducting layer electrode, and seal with clarity plastic layer, there is tab character on clarity plastic layer surface; After heart yearn electrode, transparency conducting layer electrode are connected with high voltage alternating current, produce the different Intensity LEDs of energy correspondence markings word, thus determine voltage value scope.
Heart yearn electrode layer 1 in the present invention is made up of conducting metal, and conducting metal is the one in aluminium, silver, copper, tin, nickel, and aluminium, copper are conventional materials, its conductivity, ductility, is cheapnessly better than other material; Also other class electric conducting material can be made as graphite.Heart yearn electrode layer inside can be that nonmetallic materials are made, its smooth surface, soft or hard is all passable, shape can be pipe or line 7, as PVC hollow pipe, nylon wire, phenolic plastics, pottery etc., its surface can with conducting metal good combination, as coated metal paillon foil, also can apply glue or plating form and make heart yearn electrode layer.
Heart yearn electrode layer 1 in the present invention also can be directly that metallic conduction silk thread is formed, metallic conduction silk thread form can be single or many stranded, metal material is the one in aluminium, silver, copper wire, its shape is circular or trapezoidal or rectangle, also can be other shape as required, as semicircle, trapezoidal, arc etc.; Nonmetal formation central line is hollow or solid construction, and they are plastics, graphite, asbestos, surperficial coated metal layer.Many stranded metallic conduction silk threads can surperficial first coating insulating layer, then rule spiral stranded formation multicore multichannel flowing illumination effect.SMIS line electrode layer of the present invention can be different-diameter distribution, with stepped or ramped shaped distribution, by thin gradually to thick transition, this distribution determines luminous intensity and opens bright voltage levels, when coating is evenly distributed, the electroluminescent material layer that diameter is thin is relative with insulating barrier thick, and open bright voltage high, brightness is low; The electroluminescent material layer that diameter is thick and insulating barrier relative thin, open bright voltage low, brightness is high, and when voltage increases from low to high fast, isolychn then produces mobile gradually bright effect.
Insulating barrier 2 in the present invention is made up with adhesive mixing coating of dielectric material; Dielectric material is one or more or multiple mixture in titanium dioxide, barium titanate, lead titanates, strontium titanates, CaCu 3 Ti 4 O, adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint, it has good insulating properties, and can bear more than 3000 volts voltages.In the present invention, insulating barrier can be different-thickness distribution, and with the distribution of stepped or ramped shaped, by book gradually to thicker than crossing, this distribution determines luminous intensity and opens bright voltage levels, and it is low that book opens bright voltage, and brightness is high; Thick to open bright voltage high, and brightness is low, and when voltage increases from low to high fast, isolychn then produces mobile gradually bright effect, and insulating barrier can be sandwich construction.Insulating barrier can be the insulating barrier 8 repeatedly applying different medium material, and also can be the mixture composition insulating barrier 9 of medium material, its effect produced improves high pressure resistant electrology characteristic.
In the present invention, insulating barrier 2 can improve brightness, increase resistance to pressure, and can not have insulating barrier 2 in the present invention, but will increase considerably electroluminescent material layer thickness, guarantee voltage carrying capacity, it has degradation to affect on luminosity.
Electroluminescent material layer 3 in the present invention is made up with adhesive mixing coating of electroluminescent material, and adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint; Electroluminescent material forms by producing luminous material under high voltage electric field.In the present invention, electroluminescent material layer can be different-thickness distribution, and with the distribution of stepped or ramped shaped, by book gradually to thicker than crossing, this distribution determines luminous intensity and opens bright voltage levels, and it is low that book opens bright voltage, and brightness is high; Thick to open bright voltage high, and brightness is low, and when voltage increases from low to high fast, isolychn then produces mobile gradually bright effect.
In the present invention, the insulating barrier of different-thickness or the electroluminescent material layer of different-thickness all can realize object of the present invention.The heart yearn electrode layer of different-diameter, the insulating barrier of different-thickness, the electroluminescent material layer of different-thickness, wherein one deck is with stepped or ramped shaped distribution arbitrarily, and other layer is then homogeneous diameter distribution.
Transparency conducting layer 4 in the present invention is made up of the one in transparent conductive metal oxide material, electrically conducting transparent macromolecular material, and transparent conductive metal oxide material is one or more mixtures in nano indium oxide, tin oxide, zinc oxide, titanium oxide, antimony oxide; Transparency conducting layer is made up of transparent conductive metal nano material, and metal nano material is the one in silver, copper, gold, tin, antimony.The resistance hour of transparency conducting layer 4, luminous extension property distance, when resistance is large, luminous extension property distance is near; Luminous extension property distance during same voltage height, when same voltage is low, luminous extension property distance is near.
Transparency conducting layer electrode 6 in the present invention is made up of single or many metal conductive wire, and metal conductive wire is directly put or is wrapped in transparency conducting layer appearance, and metal conductive wire is the one in aluminium, silver, copper wire, and its shape is circular or rectangle.Transparency conducting layer electrode 10 for subsequent use can be formed when transparency conducting layer electrode is formed by many.Transparency conducting layer electrode in the present invention also can be many, its independent insulating barrier of corresponding different-thickness or electroluminescent material layer of different-thickness.
Clarity plastic layer 5 in the present invention is the one in PVC, PP, PE, PU, fluorocarbon resin, silicon rubber, its complete sealed transparent conductive layer; Clarity plastic layer face character mark is by luminous intensity corresponding voltage value range; Clarity plastic layer is water white transparency or colourful transparent.
Producing when heart yearn electrode, electrodepositing transparent conductive layer interpolar connection alternating voltage 110 volt-10 ten thousand volts in the present invention is luminous, and luminous intensity is inversely proportional corresponding with voltage.When alternating voltage dynamically adds, and use chip controls to boost or dip time from low to high, can produce and extend dynamic light-emitting gradually.The present invention can use Fibre Optical Sensor to be connected to luminescent layer outside, realizes quantizing at a distance result.
Accompanying drawing explanation
The heart yearn electrode layer structure figure of Fig. 1 different-diameter distribution
The insulation layer structure figure of Fig. 2 different-thickness distribution
The electroluminescent material layer structure chart of Fig. 3 different-thickness distribution
The insulating barrier of Fig. 4 different-thickness distribution and electroluminescent material layer structure chart
Fig. 5 multilayer dielectric layer structure chart
In figure, structure is:
1. heart yearn electrode layer
2. insulating barrier
3. electroluminescent material layer
4. transparency conducting layer
5. clarity plastic layer
6. transparency conducting layer electrode
7. central line
8. insulating barrier
9. insulating barrier
10. backup electrode.
Embodiment
A kind of electro-luminescence display device for high voltage measuring of the present invention, it comprises: heart yearn electrode layer 1, insulating barrier 2, electroluminescent material layer 3, transparency conducting layer 4, transparency conducting layer electrode 6, clarity plastic layer 5 with character; It is characterized in that: in heart yearn electrode layer, insulating barrier, electroluminescent material layer, have at least one to be that different-thickness or diameter distribution are formed, heart yearn electrode surface evenly scribbles the insulating barrier of different-thickness, insulating barrier appearance coating electroluminescent material layer, electroluminescent material layer is coated with transparency conducting layer outward, transparency conducting layer contacts with transparency conducting layer electrode, and seal with clarity plastic layer, there is tab character on clarity plastic layer surface; After heart yearn electrode, transparency conducting layer electrode are connected with high voltage alternating current, produce the different Intensity LEDs of energy correspondence markings word, thus determine voltage value scope.
Heart yearn electrode layer 1 in the present invention is made up of conducting metal, conducting metal is the one in aluminium, silver, copper, tin, nickel, graphite, aluminium, copper are conventional materials, its conductivity, ductility, be cheapnessly better than other material, due to electroluminescence need electric current less so conductive layer can be thin or thin.Heart yearn electrode layer inside can be that solid or hollow nonmetallic materials are made, its smooth surface, soft or hard is all passable, shape can be pipe or line 7, as PVC hollow pipe, nylon wire, phenolic plastics, pottery etc., its surface can with conducting metal good combination, as coated metal paillon foil, also can apply glue or plating form and make heart yearn electrode layer.
Heart yearn electrode layer 1 in the present invention also can be directly that metallic conduction silk thread is formed, metallic conduction silk thread form can be single or many stranded, metal material is the one in aluminium, silver, copper wire, its shape is circular or square or rectangle, also can be other shape as required, as semicircle, trapezoidal, arc etc., rectangle etc.; Nonmetal formation central line is hollow or solid construction, and they are plastics, graphite, asbestos.Many stranded metallic conduction silk threads can surperficial first coating insulating layer, then rule spiral stranded formation multicore multichannel flowing illumination effect, as 3 cores, 6 cores, 9 cores, 12 cores etc.
Insulating barrier 2 in the present invention is made up with adhesive mixing coating of dielectric material; Dielectric material is one or more or multiple mixture in titanium dioxide, barium titanate, lead titanates, strontium titanates, CaCu 3 Ti 4 O, adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint, it has good insulating properties, and can bear more than 3000 volts voltages.The proportionate relationship of dielectric material and adhesive is about 1:1, heat drying or ultraviolet curing.In the present invention, insulating barrier can be different-thickness distribution, and with the distribution of stepped or ramped shaped, by book gradually to thicker than crossing, this distribution determines luminous intensity and opens bright voltage levels, and it is low that book opens bright voltage, and brightness is high; Thick to open bright voltage high, and brightness is low, and when voltage increases from low to high fast, isolychn then produces mobile gradually bright effect, and insulating barrier can be sandwich construction.Insulating barrier can be the insulating barrier 8 repeatedly applying different medium material, and also can be the mixture composition insulating barrier 9 of medium material, its effect produced improves high pressure resistant electrology characteristic.The less surface of dielectric material particle is smooth, as used the material of nanometer.
Electroluminescent material layer 3 in the present invention is made up with adhesive mixing coating of electroluminescent material, and adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint; The proportionate relationship of electroluminescent material and adhesive is about 1:1, heat drying or ultraviolet curing.Electroluminescent material forms by producing luminous material under high voltage electric field.In the present invention, electroluminescent material layer can be different-thickness distribution, and with the distribution of stepped or ramped shaped, by book gradually to thicker than crossing, this distribution determines luminous intensity and opens bright voltage levels, and it is low that book opens bright voltage, and brightness is high; Thick to open bright voltage high, and brightness is low, and when voltage increases from low to high fast, isolychn then produces mobile gradually bright effect.Electroluminescent material uses as trades mark such as GG44, D502.
In the present invention, the insulating barrier of different-thickness or the electroluminescent material layer of different-thickness all can realize object of the present invention.Control the electroluminescent material layer of different-thickness and insulating barrier, can determine that rising of luminescent device is bright with proof voltage degree, determine the voltage scope of application and the show tags precision of device.As: electroluminescent material layer and thickness of insulating layer are that 0.15 millimeter of display is born voltage and lied prostrate at 40-250, thickness is that 0.2 millimeter of display is born voltage and lied prostrate at 100-1000, thickness is that 0.5 millimeter of display is born voltage and lied prostrate at 300-5000, thickness is that 2 millimeters of displays are born voltage and lied prostrate at 3000-30000, thickness is that more than 5 millimeters displays bear voltage more than 100,000 volts, by that analogy, the present invention only gives probable ranges, and the voltage range that adhesive difference is born is different.Adhesive in the present invention can use other class materials such as PVC, also has effect same.
Transparency conducting layer 4 in the present invention is made up of the one in transparent conductive metal oxide material, electrically conducting transparent macromolecular material, and transparent conductive metal oxide material is one or more mixtures in nano indium oxide, tin oxide, zinc oxide, titanium oxide, antimony oxide; Transparency conducting layer is made up of transparent conductive metal nano material, and metal nano material is the one in silver, copper, gold, tin, antimony.The resistance hour of transparency conducting layer 4, luminous extension property distance, when resistance is large, luminous extension property distance is near, and suitable controlling resistance resistance can improve the accuracy of display effect, has larger visual impact to dynamically extending luminescence; Luminous extension property distance during same voltage height, when same voltage is low, luminous extension property distance is near.Use as resistance is applicable to high voltage 500V-3000V when 5M-50M ohm, 50M ohm is applicable to more than extra-high pressure 2000V above and uses, and 5M ohm is applicable to low-voltage 100V-1000V below and uses.When transparency conducting layer 4 resistance is zero, adds and fashionablely also can produce relatively weak luminescence, mainly concentrate on transparency conducting layer electrode 5 periphery at high voltage, along with voltage raises, luminescence also can spread extension.
Transparency conducting layer electrode 6 in the present invention is made up of single or many metal conductive wire, and metal conductive wire is directly put or is wrapped in transparency conducting layer appearance, and metal conductive wire is the one in aluminium, silver, copper wire, and its shape is circular or rectangle.Transparency conducting layer electrode 10 for subsequent use can be formed when transparency conducting layer electrode is formed by many.
Clarity plastic layer 5 in the present invention is the one in PVC, PP, PE, PU, fluorocarbon resin, silicon rubber, its complete sealed transparent conductive layer; Clarity plastic layer face character mark is by luminous intensity corresponding voltage value range; Clarity plastic layer is water white transparency or colourful transparent.Clarity plastic layer 6 skin in the present invention can continue to use heat resistanceheat resistant, protection against the tide, transparent plastics, glass, ceramic seal, and it can increase the service life.
Producing when heart yearn electrode, electrodepositing transparent conductive layer interpolar connection alternating voltage 110 volt-10 ten thousand volts in the present invention is luminous, and luminous intensity is inversely proportional corresponding with voltage; Alternating voltage dynamically adds from low to high, and use chip controls to boost or dip time, produces and extend dynamic light-emitting gradually.Structure of the present invention can be: the heart yearn electrode layer structure of different-diameter distribution, the insulation layer structure of different-thickness distribution, the electroluminescent material layer structure of different-thickness distribution, the insulating barrier of different-thickness distribution and electroluminescent material layer structure, multilayer insulation Rotating fields etc.
the invention has the advantages that
1) a kind of electro-luminescence display device for high voltage measuring of the present invention, its large approximate number that can show AC high voltage plants scope, bear extra-high pressure and the operating state of 110 volts to 100,000 volts, it is attached to high-power transformer junction, can in pure and fresh display transformer operating state at night, display viewing distance reaches 50 meters, and continuous useful life was more than 5 years.Also can be made into portable inspectiont device, every meter of weight only has 10 grams-20 grams simultaneously.It can be widely used in all types of power equipment, electric power transfer voltage display with measure, its structure is simple, interpretation is directly perceived, use safety, with low cost.
2) the present invention can use control chip, control voltage ascensional range and time, formative dynamics strengthens the illumination effect of movement gradually, and bend arbitrarily, it can be widely used in luminescence, display, lighting field, as: emitting neon lamp advertisement, safety instruction, household electrical appliance, instrument and meter, Luminous wire, lighting clothes, Flash toy etc.It can be used by driver in DC3V, DC12V, AC220, AC110V.
3) the device of the present invention special purpose driver that electro luminescence line can not be needed conventional, its voltage is proportional with brightness, and random length can cutting use.It may be used for power supply gang socket, and be widely used in little simple and easy voltage display electrically, its power consumption only has 60% of LED light, has good positive effect to saves energy, and frivolous safe handling is simple.
Structure of the present invention is simple, luminous intensity good, dynamic change is obvious, be all better than prior art and product without electromagnetic interference, color scheme.The present invention can be applied in the voltage indicator part instrument of electric power system, also can be used in the fields such as automobile, illumination, electrical equipment, toy, clothes, model, advertisement, produces dynamically extend illumination effect gradually at night.Production technology of the present invention is simple, is applicable to large-scale production.The present invention can also use optical fiber to mate tool count value data managements such as connecting photomultiplier, selenium cell, illumination agent.
Embodiment
Select heart yearn electrode layer to be single copper wire, its shape is circular.
Insulating barrier is made up with epobond epoxyn mixing coating of dielectric material lead titanates; The proportionate relationship of dielectric material and adhesive is about 1:1, and heat drying solidifies, and distributes with stepped shape, by book gradually to thicker than crossing.
Electroluminescent material layer 3 is made up with epobond epoxyn mixing coating of electroluminescent material D512, and the proportionate relationship of electroluminescent material and adhesive is about 1:1, and heat drying solidifies.
Transparency conducting layer 4 is by being nano indium oxide, and resistance is 5M ohm.
Transparency conducting layer electrode 6 is circular single copper wires.
Clarity plastic layer 5 is silicon rubber, its complete sealed transparent conductive layer; Clarity plastic layer face character mark is by luminous intensity corresponding voltage value range.
After having done to illustrate for the good execution mode of the present invention above, it should be understood that to one skilled in the art, when without departing from the spirit and scope of the present invention, any changes and improvements made for the present invention all within the scope of the invention.
Claims (4)
1. for an electro-luminescence display device for high voltage measuring, it comprises: heart yearn electrode layer, insulating barrier, electroluminescent material layer, transparency conducting layer, transparency conducting layer electrode, clarity plastic layer with character; It is characterized in that: in heart yearn electrode layer, insulating barrier, electroluminescent material layer, have at least one to be that different-thickness or diameter distribution are formed, heart yearn electrode surface evenly scribbles insulating barrier, insulating barrier appearance coating electroluminescent material layer, electroluminescent material layer is coated with transparency conducting layer outward, transparency conducting layer contacts with transparency conducting layer electrode, and seal with clarity plastic layer, there is tab character on clarity plastic layer surface; The heart yearn electrode layer of different-diameter, the insulating barrier of different-thickness, the electroluminescent material layer of different-thickness are all be uniformly distributed with ramped shaped; After heart yearn electrode, transparency conducting layer electrode are connected with high voltage alternating current, produce the different Intensity LEDs of energy correspondence markings word, thus determine voltage value scope.
2. a kind of electro-luminescence display device for high voltage measuring as claimed in claim 1, heart yearn electrode layer is made up of conducting metal, and conducting metal is the one in aluminium, silver, copper, tin, nickel; Heart yearn electrode layer is inner forms central line or metallic conduction silk thread is formed by nonmetal, and it has variable-diameter structure, and metallic conduction silk thread is single or aluminium, silver, the one in copper wire of many, and its shape is circular or trapezoidal or rectangle; Nonmetal formation central line is hollow or solid construction; Insulating barrier is made up with adhesive mixing coating of dielectric material, and it has different-thickness structure; Dielectric material is one or more mixtures in titanium dioxide, barium titanate, lead titanates, strontium titanates, CaCu 3 Ti 4 O, and adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint; Electroluminescent material layer is made up with adhesive mixing coating of electroluminescent material, and adhesive is the one in epoxy resin, fluoro-containing coating, silicone-based coating, polyurethane, acrylic paint; Electroluminescent material forms by producing luminous material under high voltage electric field, has different-thickness structure.
3. a kind of electro-luminescence display device for high voltage measuring as claimed in claim 1, transparency conducting layer is made up of the one in transparent conductive metal oxide material, electrically conducting transparent macromolecular material, and transparent conductive metal oxide material is one or more mixtures in nano indium oxide, tin oxide, zinc oxide, titanium oxide, antimony oxide; Transparency conducting layer is made up of transparent conductive metal nano material, and metal nano material is the one in silver, copper, gold, tin, antimony; Transparency conducting layer electrode is made up of single or many metal conductive wire, and metal conductive wire is directly put or is wrapped in transparency conducting layer appearance, and metal conductive wire is the one in aluminium, silver, copper wire, and its shape is circular or rectangle.
4. a kind of electro-luminescence display device for high voltage measuring as claimed in claim 1, clarity plastic layer is the one in PVC, PP, PE, PU, fluorocarbon resin, silicon rubber, its complete sealed transparent conductive layer; Clarity plastic layer face character mark is by luminous intensity corresponding voltage value range; Clarity plastic layer is water white transparency or colourful transparent; Produce luminous when connecting alternating voltage 110 volt-10 ten thousand volts at heart yearn electrode, electrodepositing transparent conductive layer interpolar, luminous intensity is inversely proportional corresponding with voltage; Alternating voltage dynamically adds fashionable from low to high, and luminescence extends to form dynamic light-emitting gradually.
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| CN103018533B (en) * | 2012-12-17 | 2015-02-11 | 北京航空航天大学 | Optical voltage sensor based on electroluminescent effect |
| CN107868633A (en) * | 2016-09-23 | 2018-04-03 | 蓝思科技股份有限公司 | A kind of capacitive pressure touch sensing and electronic component |
| CN112490379A (en) * | 2019-09-12 | 2021-03-12 | 京懋国际光电股份有限公司 | Electroplate type electroluminescent device |
| CN114184825A (en) * | 2021-12-08 | 2022-03-15 | 北京深思数盾科技股份有限公司 | Detection device, ion generator and air purifier |
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| CN202696941U (en) * | 2012-07-06 | 2013-01-23 | 上海科润光电技术有限公司 | Electroluminescent display device for high voltage measurement |
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