Photosensitive electrically conductive paste and electrode pattern

A technology of conductive paste and electrode pattern, which is applied in the direction of photolithography/pattern, pattern and photolithography, conductive materials dispersed in non-conductive inorganic materials, etc. issues such as costing

Active Publication Date: 2013-08-21
TAIYO HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when using the photosensitive conductive paste obtained by the above method, it is usually necessary to mix conductive powder using a noble metal with good conductivity such as silver at a high concentration, so it is difficult to achieve a further high-definition conductor pattern. problems of thinning, thinning and cost reduction

Method used

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  • Photosensitive electrically conductive paste and electrode pattern
  • Photosensitive electrically conductive paste and electrode pattern
  • Photosensitive electrically conductive paste and electrode pattern

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Good evaluation results were obtained in Examples 1 to 5. In addition, in Example 6, since the amount of the solvent relative to the organic matter is larger than that in Example 1, it can be seen that the viscosity is lowered and the workability is deteriorated under the coating conditions. In Example 7, although the resistance value increased due to the addition of phosphate ester, good evaluation results were obtained for the line shape, handleability, and film thickness.

[0110] On the other hand, in Comparative Example 1, since the silver powder having a large primary particle size was used, the wire shape was poor, and the resistance value also increased. In addition, the film thickness cannot be reduced. In addition, in Comparative Example 2, since the silver powder was used in a predetermined amount or more, the electrode pattern itself could not be formed.

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Abstract

Provided is a photosensitive electrically conductive paste containing silver powder, organic binder, photopolymerizable monomer, photopolymerization initiator and organic solvent. The silver powder, having a primary particle diameter of not more than 1.0 µm, a specific surface area from 1.5 m2 / g to 2.0 m2 / g and a tap density from 2.0 to 5.0 g / cm3, is included in an amount of less than 70 mass% of the electrically conductive paste excluding the organic solvent.

Description

technical field [0001] The present invention relates to a photosensitive conductive paste for forming an electrode pattern and an electrode pattern formed using the same. Background technique [0002] As a method of forming a pattern of a conductor on a base material using a conductive paste mixed with a conductive powder in an organic binder, a pattern forming method using a printing technique such as screen printing is widely used. In addition, as a method of forming a pattern of a fine conductor having a line width of, for example, 100 μm or less, a patterning method using a photosensitive conductive paste and utilizing a photolithography technique is known. [0003] Usually, the conductive powder is contained in the conductive paste and the glass frit is contained, and the organic component in the paste is removed by firing, and the glass frit is melted to ensure the conductivity of the conductor pattern and the adhesion to the substrate. Compatibility. However, with s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H05K1/09
CPCH01B1/22H05K1/095H05K2203/0514H05K3/02H05K1/09
Inventor 伊藤秀之铃木信之
Owner TAIYO HLDG CO LTD
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