CN114038606A - Liquid metal graphene composite conductive paste for transparent display screen - Google Patents
Liquid metal graphene composite conductive paste for transparent display screen Download PDFInfo
- Publication number
- CN114038606A CN114038606A CN202111308544.0A CN202111308544A CN114038606A CN 114038606 A CN114038606 A CN 114038606A CN 202111308544 A CN202111308544 A CN 202111308544A CN 114038606 A CN114038606 A CN 114038606A
- Authority
- CN
- China
- Prior art keywords
- liquid metal
- display screen
- transparent display
- graphene
- conductive paste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 38
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 12
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052733 gallium Inorganic materials 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052709 silver Inorganic materials 0.000 claims description 7
- 239000004332 silver Substances 0.000 claims description 7
- 229910000846 In alloy Inorganic materials 0.000 claims description 6
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 claims description 6
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 229910002804 graphite Inorganic materials 0.000 claims 1
- 239000010439 graphite Substances 0.000 claims 1
- -1 graphite alkene Chemical class 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 30
- 239000000758 substrate Substances 0.000 abstract description 13
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a liquid metal graphene composite conductive paste for a transparent display screen, which comprises the following components: 20-30 parts of graphene and 70-80 parts of liquid metal, wherein the mixing ratio of the graphene to the liquid metal in the conductive paste is 1: 3. The invention provides liquid metal graphene composite conductive paste which is used as a connecting welding spot of an LED lamp on a transparent display screen and a metal wire on conductive glass, so that the electrical connection between the LED lamp and the metal wire on the conductive glass is realized, and compared with the prior art, the conductive performance and the heat dissipation performance are improved, so that the electric signal transmission requirement of a large transparent display screen is met, the heat dissipation performance is improved, and the problem that the service life of the transparent display screen is influenced due to the fact that a large amount of heat is generated by the long-time work of the LED lamp is avoided. Meanwhile, the liquid metal is compatible with the glass substrate and can infiltrate the glass substrate, so that the liquid metal can be stably adhered to the glass substrate, and the transmission requirements of electric energy and electric signals of the LED lamp are met.
Description
Technical Field
The invention relates to the technical field of transparent display screens, in particular to liquid metal graphene composite conductive slurry for a transparent display screen.
Background
LED transparent display screen is the transparent conductive technology of application, with the high-end customization photoelectricity transparent display screen of LED structural layer veneer between two-layer glass or diaphragm, when having remain advantages such as easy control, low pressure direct current drive, the combination after color performance is abundant, long service life that traditional LED display screen had, provide penetrating feel, no wire outward appearance and bright brilliant shine. And due to the unique advantages of the glass curtain wall, the glass curtain wall is widely applied to urban lighting engineering and large-screen display systems. Meanwhile, the LED glass display screen can be used as an indoor display curtain wall and is widely applied to large-scale square lighting, stage scenery, bars, high-grade dance halls, urban landmark buildings, municipal buildings, airports, automobile 4S stores, hotels, banks, brand chain stores and the like, and the LED glass display screen has the practicability of the display screen and certain attractiveness and concealment. In the existing LED transparent display screen, the bonding pad of the LED lamp is generally electrically connected with glass in a silver paste mode, so that electric energy or electric signals are transmitted to the LED lamp. With the popularization and progress of the technology, the specification and size of the transparent display screen are also larger, and therefore, the requirements on the electric conductivity and the heat dissipation performance are also higher and higher. The performance of the existing silver colloid can not meet the requirement gradually, and a better material is required for replacement.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the liquid metal graphene composite conductive paste for the transparent display screen.
The technical scheme of the invention is as follows: the liquid metal graphene composite conductive paste for the transparent display screen comprises: 20-30 parts of graphene and 70-80 parts of liquid metal, wherein the mixing ratio of the graphene to the liquid metal in the conductive paste is 1: 3.
Further, the liquid metal is one of gallium, gallium-indium alloy, gallium-tin alloy or gallium-indium-tin alloy.
Further, the liquid metal is liquid at a temperature of 0-2200 ℃.
Further, the graphene is modified graphene.
Further, the modified graphene is prepared by uniformly dispersing graphene oxide in deionized water containing a surfactant, wherein the concentration of a graphene oxide dispersion liquid is 1mg/mL, then adding a reducing agent, carrying out hydrothermal reaction, and washing and drying.
Further, the surfactant is sodium lauryl sulfate.
Further, the reducing agent is ethylenediamine.
Further, the temperature of the hydrothermal reaction is 80 ℃ and the time is 10 hours.
By adopting the scheme, the liquid metal graphene composite conductive paste is used as a connecting welding spot of the LED lamp on the transparent display screen and the metal wire on the conductive glass, so that the electric connection between the LED lamp and the metal wire on the conductive glass is realized, and compared with the prior art, the conductive performance and the heat dissipation performance are improved, so that the electric signal transmission requirement of a large transparent display screen is met, the heat dissipation performance is improved, and the problem that the service life of the transparent display screen is influenced due to the fact that a large amount of heat is generated by the long-time work of the LED lamp is avoided. Meanwhile, the liquid metal is compatible with the glass substrate and can infiltrate the glass substrate, so that the liquid metal can be stably adhered to the glass substrate, and the transmission requirements of electric energy and electric signals of the LED lamp are met.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The invention provides liquid metal graphene composite conductive slurry for a transparent display screen, which comprises the following components in parts by weight: 20-30 parts of graphene and 70-80 parts of liquid metal, wherein the mixing ratio of the graphene to the liquid metal in the conductive paste is 1: 3.
The liquid metal is one of gallium, gallium-indium alloy, gallium-tin alloy or gallium-indium-tin alloy. Gallium, gallium indium alloy, gallium tin alloy and gallium indium tin alloy are all compatible with glass, can wet glass, expand along the glass surface and mutually adhere, so can guarantee with the adhesion between the glass substrate or the diaphragm of transparent display screen. Meanwhile, the gallium-indium alloy, the gallium-tin alloy and the gallium-indium-tin alloy have strong conductivity, can meet the transmission of electric energy and electric signals, and avoid the condition of heating and temperature rise caused by large internal resistance. And gallium, gallium indium alloy, gallium tin alloy and gallium indium tin alloy are nontoxic to human body, and processing and use do not affect human health.
The liquid metal is liquid at a temperature of 0-2200 ℃. Under normal atmospheric temperature and high temperature environment, liquid metal keeps liquid, guarantees that its surface tension is unchangeable to this guarantees the stability between liquid metal and the glass substrate, avoids connecting unstable condition because of the high temperature appears, guarantees the normal connection use of LED lamp.
The graphene is modified graphene.
The modified graphene is prepared by uniformly dispersing graphene oxide in deionized water containing a surfactant, wherein the concentration of a graphene oxide dispersion liquid is 1mg/mL, adding a reducing agent, carrying out hydrothermal reaction, and washing and drying.
The surfactant is sodium dodecyl sulfate.
The reducing agent is ethylenediamine.
The temperature of the hydrothermal reaction is 80 ℃, and the time is 10 h.
The invention has the following characteristics:
firstly, liquid metal and graphene are mixed and modulated, and the prepared liquid metal graphene composite conductive paste has the characteristics of good printability, low series resistance and the like, so that the conductivity and the heat conduction efficiency of the grid line are improved. Through electrical property test, the conductive efficiency and the heat dissipation efficiency on the transparent display screen can be improved by 5-10 times compared with the existing silver adhesive, and the use requirements of the transparent display screen, especially a large transparent display screen, are met.
And the liquid metal is compatible with the glass, can soak the glass, and is expanded along the surface of the glass and mutually attached, so that the adhesion between the liquid metal and the glass substrate or the film of the transparent display screen can be ensured.
And thirdly, the liquid metal has no toxicity to human bodies, and the processing and the use of the liquid metal do not influence the health of human bodies.
Fourthly, under normal atmospheric temperature and high temperature environment, liquid metal keeps liquid, guarantees that its surface tension is unchangeable to this guarantees the stability between liquid metal and the glass substrate or the diaphragm, avoids appearing connecting unstable condition because of the high temperature, guarantees the normal connection use of LED lamp.
In summary, the invention provides a liquid metal graphene composite conductive paste as a connection welding spot of an LED lamp on a transparent display screen and a metal wire on conductive glass, so as to realize electrical connection therebetween, and compared with the prior art, the liquid metal graphene composite conductive paste improves the conductive performance and the heat dissipation performance, thereby meeting the electrical signal transmission requirement of a large transparent display screen, improving the heat dissipation performance, and avoiding the influence on the service life of the transparent display screen due to a large amount of heat generated by long-time operation of the LED lamp. Meanwhile, the liquid metal is compatible with the glass substrate and can infiltrate the glass substrate, so that the liquid metal can be stably adhered to the glass substrate, and the transmission requirements of electric energy and electric signals of the LED lamp are met.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a liquid metal graphite alkene composite electricity slurry of transparent display screen which characterized in that includes: 20-30 parts of graphene and 70-80 parts of liquid metal, wherein the mixing ratio of the graphene to the liquid metal in the conductive paste is 1: 3.
2. The liquid metal graphene composite conductive paste for the transparent display screen according to claim 1, wherein the liquid metal is one of gallium, gallium-indium alloy, gallium-tin alloy or gallium-indium-tin alloy.
3. The liquid metal graphene composite conductive paste for the transparent display screen according to claim 1, wherein the liquid metal is liquid at a temperature of 0-2200 ℃.
4. The liquid metal graphene composite conductive paste for the transparent display screen according to claim 1, wherein the graphene is modified graphene.
5. The silver paste graphene composite conductive paste for the transparent display screen according to claim 4, wherein the modified graphene comprises graphene oxide uniformly dispersed in deionized water containing a surfactant, wherein the concentration of the graphene oxide dispersion liquid is 1mg/mL, and then a reducing agent is added, after hydrothermal reaction, the graphene oxide composite conductive paste is obtained after washing and drying.
6. The silver paste graphene composite conductive paste for the transparent display screen according to claim 5, wherein the surfactant is sodium dodecyl sulfate.
7. The silver paste graphene composite conductive paste for the transparent display screen according to claim 5, wherein the reducing agent is ethylenediamine.
8. The silver paste graphene composite conductive paste for the transparent display screen according to claim 5, wherein the temperature of the hydrothermal reaction is 80 ℃ and the time is 10 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308544.0A CN114038606A (en) | 2021-11-05 | 2021-11-05 | Liquid metal graphene composite conductive paste for transparent display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111308544.0A CN114038606A (en) | 2021-11-05 | 2021-11-05 | Liquid metal graphene composite conductive paste for transparent display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114038606A true CN114038606A (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111308544.0A Pending CN114038606A (en) | 2021-11-05 | 2021-11-05 | Liquid metal graphene composite conductive paste for transparent display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114038606A (en) |
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| CN113594340A (en) * | 2021-07-30 | 2021-11-02 | 巨晶(广东)新材料科技有限公司 | Electric connection process of lamp bead bonding pad and glass screen |
-
2021
- 2021-11-05 CN CN202111308544.0A patent/CN114038606A/en active Pending
Patent Citations (14)
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