CN114155991A - Silver paste graphene composite conductive paste for transparent display screen - Google Patents
Silver paste graphene composite conductive paste for transparent display screen Download PDFInfo
- Publication number
- CN114155991A CN114155991A CN202111304752.3A CN202111304752A CN114155991A CN 114155991 A CN114155991 A CN 114155991A CN 202111304752 A CN202111304752 A CN 202111304752A CN 114155991 A CN114155991 A CN 114155991A
- Authority
- CN
- China
- Prior art keywords
- display screen
- transparent display
- graphene
- paste
- silver
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 42
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 36
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 34
- 239000004332 silver Substances 0.000 title claims abstract description 34
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 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
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 3
- 239000002245 particle 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
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- -1 graphite alkene Chemical class 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 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
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000007787 solid Substances 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
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising 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
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
Abstract
The invention discloses a silver paste graphene composite conductive paste of a transparent display screen, which is characterized by comprising the following components in parts by weight: 20-30 parts of graphene and 70-80 parts of silver paste, wherein the mixing ratio of the graphene to the silver paste in the conductive paste is 1: 3. The invention provides a silver paste 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, thereby meeting the electric 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 caused by a large amount of heat generated by the long-time work of the LED lamp.
Description
Technical Field
The invention relates to the technical field of transparent display screens, in particular to silver paste graphene composite conductive paste 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 silver paste graphene composite conductive paste for a transparent display screen.
The technical scheme of the invention is as follows: the utility model provides a compound conductive paste of silver thick liquid graphite alkene of transparent display screen, includes: 20-30 parts of graphene and 70-80 parts of silver paste, wherein the mixing ratio of the graphene to the silver paste in the conductive paste is 1: 3.
Further, the silver paste comprises: 60-70 parts of silver powder, 2-3 parts of glass powder and 8-10 parts of organic carrier.
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.
Further, the particle size of the silver powder is 1-2 μm.
By adopting the scheme, the silver paste 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 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.
Detailed Description
The present invention will be described in detail with reference to specific examples.
The invention provides silver paste graphene composite conductive paste for a transparent display screen, which comprises the following components in parts by weight: 20-30 parts of graphene and 70-80 parts of silver paste, wherein the mixing ratio of the graphene to the silver paste in the conductive paste is 1: 3.
The silver paste comprises: 60-70 parts of silver powder, 2-3 parts of glass powder and 8-10 parts of organic carrier.
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 particle size of the silver powder is 1-2 μm.
The invention has the following characteristics:
firstly, the silver paste and the graphene are mixed and modulated, and the prepared silver paste graphene composite conductive paste has the characteristics of good printability, low series resistance, increased height-to-width ratio 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.
Secondly, dispersing the glass powder and the silver powder by adopting an organic carrier to ensure that the glass powder and the silver powder have fluidity so as to ensure that solid matters are uniformly dispersed; the organic carrier has good viscosity and thixotropy, and excellent drying efficiency and roasting performance.
In summary, the silver paste graphene composite conductive paste provided by the invention is used 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 between the LED lamp and the metal wire, and compared with the prior art, the conductive performance and the heat dissipation performance are improved, 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 the large amount of heat generated by long-time operation of the LED lamp.
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 compound conductive paste of silver thick liquid graphite alkene of transparent display screen which characterized in that includes: 20-30 parts of graphene and 70-80 parts of silver paste, wherein the mixing ratio of the graphene to the silver paste in the conductive paste is 1: 3.
2. The silver paste graphene composite conductive paste of the transparent display screen according to claim 1, wherein the silver paste comprises: 60-70 parts of silver powder, 2-3 parts of glass powder and 8-10 parts of organic carrier.
3. The silver paste graphene composite conductive paste for the transparent display screen according to claim 1, wherein the graphene is modified graphene.
4. The silver paste graphene composite conductive paste for the transparent display screen according to claim 3, 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.
5. The silver paste graphene composite conductive paste for the transparent display screen according to claim 4, wherein the surfactant is sodium dodecyl sulfate.
6. The silver paste graphene composite conductive paste for the transparent display screen according to claim 4, wherein the reducing agent is ethylenediamine.
7. The silver paste graphene composite conductive paste for the transparent display screen according to claim 4, wherein the temperature of the hydrothermal reaction is 80 ℃ and the time is 10 hours.
8. The silver paste graphene composite conductive paste for the transparent display screen according to claim 1, wherein the particle size of the silver powder is 1-2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111304752.3A CN114155991A (en) | 2021-11-05 | 2021-11-05 | Silver paste graphene composite conductive paste for transparent display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111304752.3A CN114155991A (en) | 2021-11-05 | 2021-11-05 | Silver paste graphene composite conductive paste for transparent display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114155991A true CN114155991A (en) | 2022-03-08 |
Family
ID=80459239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111304752.3A Pending CN114155991A (en) | 2021-11-05 | 2021-11-05 | Silver paste graphene composite conductive paste for transparent display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114155991A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140231718A1 (en) * | 2013-02-21 | 2014-08-21 | Yi-Jun Lin | Process for Producing Highly conducting and Transparent Films From Graphene Oxide-Metal Nanowire Hybrid Materials |
| CN106325630A (en) * | 2015-07-08 | 2017-01-11 | 江苏吉创光电有限公司 | Graphene multi-point touching capacitive touch screen |
| CN107437440A (en) * | 2017-08-04 | 2017-12-05 | 郴州国盛新材科技有限公司 | A kind of graphene nano silver electronic paste |
| CN107910099A (en) * | 2017-10-31 | 2018-04-13 | 南京旭羽睿材料科技有限公司 | A kind of compound silver paste of graphene and preparation method thereof |
| CN108877540A (en) * | 2018-06-04 | 2018-11-23 | 杭州亿奥光电有限公司 | A kind of transparency LED glass display screen |
| CN108962425A (en) * | 2018-08-02 | 2018-12-07 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of graphene conductive slurry |
| CN109872831A (en) * | 2017-12-04 | 2019-06-11 | 北京市合众创能光电技术有限公司 | Compound silver paste of modified graphene and preparation method thereof |
| CN111403082A (en) * | 2020-03-27 | 2020-07-10 | 苏州聚龙能源科技有限公司 | Composite aqueous graphene conductive slurry and preparation method thereof |
-
2021
- 2021-11-05 CN CN202111304752.3A patent/CN114155991A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140231718A1 (en) * | 2013-02-21 | 2014-08-21 | Yi-Jun Lin | Process for Producing Highly conducting and Transparent Films From Graphene Oxide-Metal Nanowire Hybrid Materials |
| CN106325630A (en) * | 2015-07-08 | 2017-01-11 | 江苏吉创光电有限公司 | Graphene multi-point touching capacitive touch screen |
| CN107437440A (en) * | 2017-08-04 | 2017-12-05 | 郴州国盛新材科技有限公司 | A kind of graphene nano silver electronic paste |
| CN107910099A (en) * | 2017-10-31 | 2018-04-13 | 南京旭羽睿材料科技有限公司 | A kind of compound silver paste of graphene and preparation method thereof |
| CN109872831A (en) * | 2017-12-04 | 2019-06-11 | 北京市合众创能光电技术有限公司 | Compound silver paste of modified graphene and preparation method thereof |
| CN108877540A (en) * | 2018-06-04 | 2018-11-23 | 杭州亿奥光电有限公司 | A kind of transparency LED glass display screen |
| CN108962425A (en) * | 2018-08-02 | 2018-12-07 | 佛山腾鲤新能源科技有限公司 | A kind of preparation method of graphene conductive slurry |
| CN111403082A (en) * | 2020-03-27 | 2020-07-10 | 苏州聚龙能源科技有限公司 | Composite aqueous graphene conductive slurry and preparation method thereof |
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