Method for manufacturing conductive pattern on flexible substrate and protective printing oil thereof

A conductive pattern and ink protection technology, which is applied to inks, chemical/electrolytic methods to remove conductive materials, household appliances, etc., can solve problems such as unsuitable printing of fine lines, complicated equipment, and expensive

Active Publication Date: 2009-12-02
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Flexible coating (Flexible Coating) is an important key technology towards the flexible electronics industry. Since the traditional silicon substrate and glass substrate-based process technology can no longer meet the technical applications on flexible or flexible substrates, the development of A new process suitable for flexible substrates has become a top priority
[0004] The printing ink of traditional screen printing is only suitable for thick lines, not for printing fine lines. Therefore, the traditional photoresist exposure and development yellow light process is generally used to make conductive line patterns with a line width below 100 μm. The process is complicated and the exposure and development equipment

Method used

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  • Method for manufacturing conductive pattern on flexible substrate and protective printing oil thereof
  • Method for manufacturing conductive pattern on flexible substrate and protective printing oil thereof
  • Method for manufacturing conductive pattern on flexible substrate and protective printing oil thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] [Example 1: Protecting Screen Printing Ink A]

[0032] First prepare the epoxy resin solution: 15 parts by weight of bisphenol A epoxy resin (BE-188; Changchun Company), 11.6 parts by weight of epoxy resin (BE325; Changchun Company), and 37.3 parts by weight of bisphenol A type containing -OH Base epoxy resin (BE500; Changchun Company) was dissolved in 126 parts by weight of propylene glycol monomethyl ether (Propylene glycol monomethyl ether; PGME) and mixed and stirred for reaction. The reaction temperature was 125°C and stirred for four hours under nitrogen. Begin to cool down to 80°C, then add 9.7 parts by weight of 4,4-diaminodiphenylsulfone (4,4-Diamino Diphenyl Sulfone; DDS) (Jingming Chemical Industry), and then react for 120 minutes, then continue to reduce the reaction temperature to Serve as epoxy resin solution at room temperature.

[0033] Preparation of protective ink: the epoxy resin solution (91.4 parts by weight) prepared above, anti-adhesion agent (LY...

Embodiment 2

[0036] [Example 2: Protecting Screen Printing Ink B]

[0037] Add 15 parts by weight of vinyl chloride-vinyl acetate-maleic acid ternary copolymer resin (VMCH) to 81.3 parts by weight of ethylene glycol butyl ether acetate (Ethylene Glycol Monobutyl Ethyl Acetate; EGMEA) and put it into a tank and stir to dissolve at 90°C It is a solution, and transferred into 0.2 parts by weight of thickener (BYK410; BYK company), 1.5 parts by weight of (BYK344; BYK company) leveling agent and 1 part by weight of colorant (Material Chemical Institute) is the protective ink B, solid content 16.4%.

[0038] Table 2. Composition of protective ink B

[0039] VMCH copolymer resin

Embodiment 3

[0040] [Example 3: Protecting screen printing ink C]

[0041] 1 part by weight of blue pigment is mixed into 20 parts by weight of thermoplastic polyurethane elastomer resin (Estane5715; thermoplastic polyurethane elastomer, TPU) and 78.4 parts by weight of diethylene glycol monomethyl ether acetate (Carbitol Acetate)) solvent, and Adding 0.6 parts by weight (BYK344; BYK Company) leveling agent is the protective screen printing ink C.

[0042] Table 3. Composition of protective screen printing ink C

[0043] Estane 5715

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PUM

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Abstract

The invention provides a method for manufacturing a conductive pattern on a flexible substrate and protective printing oil thereof. The method comprises the following steps: providing the flexible substrate with a conductive layer; exposing part of the conductive layer covered by the protective printing oil by screen printing; etching and removing the exposed part of the conductive layer by using the protective printing oil as a mask; and removing the protective printing oil and remaining the conductive layer not etched to form the conductive pattern with the minimum line width not less than 150 microns. The invention also provides the protective printing oil used in the technology.

Description

technical field [0001] The invention relates to a method for making a conductive pattern, and in particular to a method for making a conductive pattern on a flexible substrate and the protective ink used therein. Background technique [0002] Flexible electronics (Flexible Electronics) technology has become one of the key research and development topics around the world in recent years. Unlike traditional electronic components that use hard silicon substrates or flat glass, flexible electronics generally refers to the technology and application of microelectronic components fabricated on flexible plastic or thin metal substrates, which have the advantages of cheap process, light weight, The cost is extremely low, and it is resistant to falling and impact. Since flexible electronic components can be used to manufacture electronic products of various shapes, the degree of freedom in product design is high. Life will have a comprehensive and fundamental impact. [0003] Flex...

Claims

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Application Information

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IPC IPC(8): H05K3/06C09D11/10C09D11/02C09D11/102C09D11/106
Inventor 张信贞吴凤美赵文轩刘仕贤
Owner IND TECH RES INST
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