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GB2534418A - Solder mask and method of manufacturing thereof - Google Patents

Solder mask and method of manufacturing thereof Download PDF

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Publication number
GB2534418A
GB2534418A GB1501211.5A GB201501211A GB2534418A GB 2534418 A GB2534418 A GB 2534418A GB 201501211 A GB201501211 A GB 201501211A GB 2534418 A GB2534418 A GB 2534418A
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GB
United Kingdom
Prior art keywords
solder mask
dispersant
total content
solder
adhesive
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.)
Withdrawn
Application number
GB1501211.5A
Other versions
GB201501211D0 (en
Inventor
Ping Lai Chung
Chang Kuo-Hsin
Chen Jia-Cing
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1501211.5A priority Critical patent/GB2534418A/en
Publication of GB201501211D0 publication Critical patent/GB201501211D0/en
Publication of GB2534418A publication Critical patent/GB2534418A/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/30Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3452Solder masks
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/22Secondary treatment of printed circuits
    • H05K3/28Applying non-metallic protective coatings

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

A solder mask contains: a dispersant added at 0.1 to 1 wt% of a total content in the solder mask, an adhesive added at 0 to 20 wt% of the total content in the solder mask, solder powders added at 1 to 60 wt% of the total content in the solder mask, and a solvent added at 20 to 99 wt% of the total content in the solder mask. Also disclosed is a method of manufacturing a solder mask contains steps of: providing a first solution in which a dispersant and an ink solvent are mixed; mixing the first solution with an adhesive to form a second solution; and mixing solder powders with the second solution evenly to form the solder mask. The solder mask may be coated on a printed circuit board (PCB) and a substrate of a LED element to form a conductive heat dissipation layer on the printed circuit board (PCB) and the substrate of the LED element, thus dissipating heat, prolonging lifespan, and enhancing luminescence of the LED element, such as a LED chip.

Description

SOLDER MASK AND METHOD OF MANUFACTURING
THEREOF
FIELD OF THE INVENTION
The present invention relates to a method of manufacturing thereof which coats the solder mask on a printed circuit board (PCB) and a substrate of a LED element to form a conductive heat dissipation layer on the printed circuit board (PCB) and the substrate of the LED element, thus dissipating heat, prolonging lifespan, and enhancing luminescence of the LED element, such as a LED chip
BACKGROUND OF THE INVENTION
A conventional solder mask is coated on a printed circuit board (PCB) to avoid solders attaching on welding points of the printed circuit board. Solder mask is a thin lacquer-like layer of polymer that is usually applied to the copper traces of the printed circuit board (PCB) for protection against oxidation and to prevent solder bridges from forming between closely spaced solder pads.
However, the solder mask cannot conduct heat efficiently and cannot dissipate heat effectively.
The solder mask is coated on a LED element, such as LED chip, but luminescence of the LED element, on which the solder mask is coated, cannot obtain great luminescence.
A conventional dielectric composition is disclosed in TW Publication No. 200938036 and contains carbon material (e.g. nanometer and micron level of the carbon tubes, carbon spheres, carbon powder and carbon fiber, etc.), a carbon composite material (Carbon Matrix Composites), graphite (Graphite) or the like as a filler (Filler), and polymer (Polymer). The dielectric composition is heated to form a heat conductive dielectric layer (i.e., an insulation layer), and then a dissipating substrate and an electrode foil are pressed on a top surface and a bottom surface of the heat conductive dielectric layer. A conventional heat conductive substrate is disclosed in TW Patent No. M385199 and contains: a graphite layer, a qualitative layer, a thermal insulation layer, a conductive layer and a solder mask layer, wherein the graphite layer is made of graphite materials, the qualitative layer is made of inks and covers the graphite layer, the thermal insulation layer is configured on a top surface of the qualitative layer, the conductive layer is arranged on a top surface of the thermal insulation layer and has at least one welding points electrically connected with an electronic element. The solder mask layer is formed on the other areas of a top surface of the conductive layer besides the at least one welding points.
Nevertheless, the conventional heat conductive substrate cannot decrease heat quickly.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a solder mask and a method of manufacturing thereof which coats the solder mask on a printed circuit board (PCB) and a substrate of a LED element to form a conductive heat dissipation layer on the printed circuit board (PCB) and the substrate of the LED element, thus dissipating heat, prolonging lifespan, and enhancing luminescence of the LED element, such as a LED chip. To obtain above objective, a solder mask provided by the present invention contains: a dispersant added at 0.1 to 1 wt% of a total content in the solder mask, an adhesive added at 0 to 20 wt% 15 of the total content in the solder mask, solder powders added at 1 to 60 wt% of the total content in the solder mask, and a solvent added at 20 to 99 wt% of the total content in the solder mask.
In one embodiment, a method of manufacturing a solder mask contains steps of providing a first solution in which a 20 dispersant and an ink solvent are mixed; mixing the first solution with an adhesive to form a second solution; and mixing solder powders with the second solution evenly to form the solder mask. In another embodiment, a method of manufacturing a solder mask contains steps of mixing a dispersant at 0.1 to 1 wt% of a total content in a solder mask, an adhesive at 0 to 20 wt% of the total content in the solder mask, and solder powders at 1 to 60 wt% of the total content in the solder mask evenly to form a first mixture; and mixing the first mixture at 50 to 100 wt5 of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask, thus producing the solder mask Preferably, a method of manufacturing the solder mask also contains steps of: providing an ink liquid and an ink adhesive liquid, wherein the ink liquid includes a dispersant at 0.1 to 1 wt% of a total content in a solder mask and solder powders at 1 to 60 wt% of the total content in the solder mask, wherein the ink adhesive liquid ineludes an adhesive at 0 to 20 wt% of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask; and mixing the ink liquid and the ink adhesive liquid evenly to form the solder mask.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG 1 is a flow chart of a method of manufacturing a solder mask according to a first embodiment of the present 20 invention.
FIG. 2 is a flow chart of a method of manufacturing a solder mask according to a second embodiment of the present invention.
FIG 3 is a flow chart of a method of manufacturing a solder mask according to a third embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT S
A solder mask according to a preferred embodiment of the present invention comprises: a dispersant added at 0.1 to 1 wt% of a total content in the solder mask, an adhesive added at 0 to 20 wt% of the total content in the solder mask, solder powders added at 1 to 60 wt% of the total content in the solder mask, and a solvent added at 20 to 99 wt% of the total content in the solder mask.
The solder powders are made of any one of graphitic nanoflake, graphene, carbon canotube (CNT), and boron nitride (BN). The dispersant, the adhesive, the solder powders, and the solvent are mixed homogeneously in any one of a stirring manner, a ball milling manner, a bead milling manner, a high shear stirring manner, an ultrasonic homogenizing manner, a centrifugal mixing manner, an emulsifying manner, and a high pressure cutting manner.
Preferably, the solder mask is in a batch production or in a continuous production.
With reference to FIG 1, a method of manufacturing a solder mask according to a first embodiment of the present invention comprises steps of: providing a first solution in which a 25 dispersant and an ink solvent are mixed; mixing the first solution with an adhesive to form a second solution; and mixing solder powders with the second solution evenly to form the solder mask. The dispersant is ionic dispersant or non-ionic dispersant, wherein the ionic dispersant is any one of P-123, Tween 20, 5 Xanthan gum, Carboxymethyl Cellulose (CMC), Triton X-10, Polyvinylpyrrolidone (PVP), and Brji 30. The non-ionic dispersant is any one of poly(sodium 4-styrenesulfonate) (PSS), 3[(3-Cholamidopropyl)dimethylammonio1-1-propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), 10 Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA).
The ink solution is any one of water, anisole, Methyl-2-pyrrolidone (NMP), IPA (Isopropyl alcohol), ethanol, glycerol, ethylene glycol, butanol, propanol, propylene glycol monomethyl ether (PGME), and propylene glycol monomethyl ether acetate (PGMEA).
The adhesive is any one of epoxy, siloxane, poly(methyl methacrylate (PM:MA), styrene-butadiene rubber (SBR), carboxym ethyl cellul ose (C M C), polyvinyl alcohol (P VA), polyacrylic acid (PAA), ethylene-vinyl acetate (EVA), polyacrylic (LA) terpolymer, and polyvinylidene difluoride (PVDF).
Referring to FIG. 2, a method of manufacturing a solder mask according to a second embodiment of the present invention comprises steps of: mixing a dispersant at 0.1 to 1 wt% of a total 25 content in a solder mask, an adhesive at 0 to 20 wt% of the total content in the solder mask, and solder powders at 1 to 60 wt% of the total content in the solder mask evenly to form a first mixture; and mixing the first mixture at 50 to 100 wt5 of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask, thus producing the solder mask.
As shown in FIG. 3, a method of manufacturing a double dosage solder mask according to a third embodiment of the present invention comprises steps of; providing an ink liquid and an ink adhesive liquid, wherein the ink liquid includes a dispersant at 0.1 to 1 wt% of a total content in a solder mask and solder powders at 1 to 60 wt% of the total content in the solder mask, wherein the ink adhesive liquid includes an adhesive at 0 to 20 wt% of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask; and mixing the ink liquid and the ink adhesive liquid evenly to form the solder mask.
Thereby, the solder mask is coated on a printed circuit board (PCB) and a substrate of a LED element to form a conductive heat dissipation layer on the printed circuit board (PCB) and the substrate of the LED element, wherein the solder mask is coated on the printed circuit board (PCB) and the substrate in any one of a spray coating manner, a squeegee coating manner, a spin coating manner, a dip coating manner, and a screen printing manner, thus dissipating heat, prolonging lifespan, and enhancing luminescence of the LED element, such as a LED chip.
Preferably, after the solder mask is coated on an electronic product, the electronic product is dried in any one of a baking manner by using a baking furnace, a UV curing manner, and in an infrared (a) irradiating manner, wherein a baking temperature of the baking furnace is within 60 to 200 °C.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.

Claims (15)

  1. WHAT IS CLAIMED IS: 1. A solder mask comprising: a dispersant added at 0.1 to 1 wt% of a total content in the solder mask, an adhesive added at 0 to 20 wt% of the total content in the solder mask, solder powders added at 1 to 60 wt% of the total content in the solder mask, and a solvent added at 20 to 99 wt% of the total content in the solder mask.
  2. 2. The solder mask as claimed in claim 1, wherein the dispersant is ionic dispersant or non-ionic dispersant; the ionic 10 dispersant is any one of P-123, Tween 20, Xanthan gum, Carboxymethyl Cellulose (CMC), Triton X-100, Polyvinylpyrrolidone (PVP), and Brji 30; and the non-ionic dispersant is Poly (sodium 4-styrenesulfonate) (PSS), 3-[(3-Cholamidopropyl)dimethyl ammonio]-1-propanesufonate (CHAPS), Hexadecyltri methyl ammonium bromide (H TA B), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the non-ionic dispersant is any one of poly(sodium 4 -styrenes ulfonate) (PS S), 34(3 -Cholamidopropyl)dimethylammonio] -1-propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the ink solution is any one of water, anisole, Methyl-2-pyrrolidone (NMP), IPA (Isopropyl alcohol), ethanol, glycerol, ethylene glycol, butanol, propanol, propylene glycol monomethyl ether (PGME), and propylene glycol monomethyl ether acetate (PGMEA); the adhesive is any one of epoxy, siloxane, poly(methyl methacrylate (PMIMA), styrene-butadiene rubber (SBR), carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), polyacrylic acid (PAA), ethylene-vinyl acetate (EVA), polyacrylic (LA) terpolymer, and polyvinylidene difluoride (PVDF).
  3. 3. The solder mask as claimed in claim 1, wherein the solder powders are made of any one of graphitic nanoflake, 10 graphene, carbon canotube (CNT), and boron nitride (BN).
  4. 4. A method of manufacturing a solder mask comprising steps of providing a first solution in which a dispersant and an ink solvent are mixed; mixing the first solution with an adhesive to form a second solution; and mixing solder powders with the second solution evenly to form the solder mask.
  5. 5. The method of manufacturing the solder mask as claimed in claim 4, wherein the dispersant is ionic dispersant or non-ionic dispersant; the ionic dispersant is any one of P-123, Tween 20, Xanthan gum, Carboxymethyl Cellulose (CMC), Triton X-100, Polyvinylpyrrolidone (PVP), and Brji 30; and the non-ionic dispersant is Poly (sodium 4-styrenesulfonate) (PSS), 3 -[(3-Ch ol am i dopropyl)di methyl am m on i o] -1 -propane sufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the non-ionic dispersant is any one of poly(sodium 4 -styren esul fon ate) (PSS), 34(3 -Cholamidopropyl)dimethylammonio] -1-propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the ink solution is any one of water, anisole, Methyl-2-pyrrolidone (NMP), IPA (Isopropyl alcohol), ethanol, glycerol, ethylene glycol, butanol, propanol, propylene glycol monomethyl ether (PGME), and propylene glycol monomethyl ether acetate (PGMEA); the adhesive is any one of epoxy, siloxane, poly(methyl methacrylate (PMMA), styrene-butadiene rubber (SBR), carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), polyacrylic acid (PAA), ethylene-vinyl acetate (EVA), polyacrylic (LA) terpolymer, and polyvinylidene difluoride (PVDF).
  6. 6. The method of manufacturing the solder mask as claimed in claim 4, wherein the solder powders are made of any one of graphitic nanoflake, graphene, carbon canotube (CNT), and boron nitride (BN).
  7. 7. A method of manufacturing a solder mask comprising steps of mixing a dispersant at 0.1 to 1 wt% of a total content in a solder mask, an adhesive at 0 to 20 wt% of the total content in the solder mask, and solder powders at 1 to 60 wt% of the total content in the solder mask evenly to form a first mixture; and mixing the first mixture at 50 to 100 wt5 of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask, thus producing the solder mask
  8. 8. The method of manufacturing the solder mask as claimed in claim 7, wherein the dispersant is ionic dispersant or non-ionic dispersant; the ionic dispersant is any one of P-123, Tween 20, Xanthan gum, Carboxymethyl Cellulose (CMC), Triton X-100, Polyvinylpyrrolidone (PVP), and Brji 30; and the non-ionic dispersant is Poly (sodium 4-styrenesulfonate) (PSS), 3-[(3-Cholamidopropyl)dimethyl ammonio]-1-propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the non-ionic dispersant is any one of poly(sodium 4-styrenesulfonate) (PSS), 34(3 -Cholamidopropyl)dimethylammonio] -1-propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the ink solution is any one of water, anisole, Methyl-2-pyrrolidone (NMP), IPA (Isopropyl alcohol), ethanol, glycerol, ethylene glycol, butanol, propanol, propylene glycol monomethyl ether (PGME), and propylene glycol monomethyl ether acetate (PGMEA); the adhesive is any one of epoxy, siloxane, poly(methyl methacrylate (PMMA), styrene-butadiene rubber (SBR), carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), polyacrylic acid (PAA), ethylene-vinyl acetate (EVA), polyacrylic (LA) terpolymer, and polyvinylidene difluoride (PVDF).
  9. 9. The method of manufacturing the solder mask as claimed in claim 7, wherein the solder powders are made of any one of graphitic nanoflake, graphene, carbon canotube (CNT), and boron nitride (BN).
  10. 10. A method of manufacturing the solder mask as claimed in claim 1 comprising steps of: providing an ink liquid and an ink adhesive liquid, wherein the ink liquid includes a dispersant at 0.1 to 1 wt% of a total content in a solder mask and solder powders at 1 to 60 wt% of the total content in the solder mask, wherein the ink adhesive liquid includes an adhesive at 0 to 20 wt% of the total content in the solder mask and a solvent at 20 to 99 wt% of the total content in the solder mask; and mixing the ink liquid and the ink adhesive liquid evenly to form the solder mask.
  11. 11. The method of manufacturing the solder mask as claimed in claim 10, wherein the dispersant is ionic dispersant or non-ionic dispersant; the ionic dispersant is any one of P-123, Tween 20, Xanthan gum, Carboxymethyl Cellulose (CMC), Triton X-100, Polyvinylpyrrolidone (PVP), and BO 30; and the non-ionic dispersant is Poly (sodium 4-styrenesulfonate) (PSS), 34(3 -Cholamidopropyl)dimethyl ammonio]-I -propane s ufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1-Pyrenebutyric acid (PBA); the non-ionic dispersant is any one of poly(sodium 4-styrenesulfonate) (PSS), 34(3 -Cholamidopropyl)dimethylammonio] -1 -propanesufonate (CHAPS), Hexadecyltrimethylammonium bromide (HTAB), Sodium taurodeoxycholate hydrate (SDS), and 1 -Pyrenebutyric acid (PBA); the ink solution is any one of water, anisole, Methyl-2-pyrrolidone (NMP), IPA (Isopropyl alcohol), ethanol, glycerol, ethylene glycol, butanol, propanol, propylene glycol monomethyl ether (PGME), and propylene glycol monomethyl ether acetate (PGMEA); the adhesive is any one of epoxy, siloxane, poly(methyl methacrylate (PMIMA), styrene-butadiene rubber (SBR), carboxymethylcellulose (CMC), polyvinyl alcohol (PVA), polyacrylic acid (PAA), ethylene-vinyl acetate (EVA), polyacrylic (LA) terpolymer, and polyvinylidene difluoride (PVDF).
  12. 12. The method of manufacturing the solder mask as claimed in claim 10, wherein the solder powders are made of any 20 one of graphitic nanoflake, graphene, carbon canotube (CNT), and boron nitride (BN).
  13. 13. A solder mask substantially as hereinbefore described, with reference to and as shown in the accompanying drawings.
  14. 14. A method of manufacturing a solder mask substantially as hereinbefore described.
  15. 15. A solder mask made by the method of claim 14.
GB1501211.5A 2015-01-26 2015-01-26 Solder mask and method of manufacturing thereof Withdrawn GB2534418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1501211.5A GB2534418A (en) 2015-01-26 2015-01-26 Solder mask and method of manufacturing thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1501211.5A GB2534418A (en) 2015-01-26 2015-01-26 Solder mask and method of manufacturing thereof

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Publication Number Publication Date
GB201501211D0 GB201501211D0 (en) 2015-03-11
GB2534418A true GB2534418A (en) 2016-07-27

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GB1501211.5A Withdrawn GB2534418A (en) 2015-01-26 2015-01-26 Solder mask and method of manufacturing thereof

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0271271A (en) * 1988-09-07 1990-03-09 Tokyo Ohka Kogyo Co Ltd Formation of photosolder resist pattern
US6121358A (en) * 1997-09-22 2000-09-19 The Dexter Corporation Hydrophobic vinyl monomers, formulations containing same, and uses therefor
CN103910976A (en) * 2014-03-12 2014-07-09 广东普赛特电子科技股份有限公司 A nano-modified solder resist

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0271271A (en) * 1988-09-07 1990-03-09 Tokyo Ohka Kogyo Co Ltd Formation of photosolder resist pattern
US6121358A (en) * 1997-09-22 2000-09-19 The Dexter Corporation Hydrophobic vinyl monomers, formulations containing same, and uses therefor
CN103910976A (en) * 2014-03-12 2014-07-09 广东普赛特电子科技股份有限公司 A nano-modified solder resist

Also Published As

Publication number Publication date
GB201501211D0 (en) 2015-03-11

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