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Etching method and substrate having conductive polymer

A conductive polymer, etching technology, applied to the conductive layer, circuit, electrical components and other directions on the insulating carrier, can solve the problems of difficult to make ink, conductive polymer is easy to agglomerate, etc., to achieve the effect of stable etching

Inactive Publication Date: 2013-01-09
TSURUMISODA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conductive polymers tend to aggregate, making it difficult to make inks
In addition, there is also the problem of preventing spreading after printing or that the periphery of the droplet is thicker than the center after the ink dries.

Method used

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  • Etching method and substrate having conductive polymer
  • Etching method and substrate having conductive polymer
  • Etching method and substrate having conductive polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159] In the water, add a specified amount of ammonium cerium nitrate (NH 4 ) 2 Ce(NO 3 ) 6 (Hereafter also referred to as "CAN".) and concentrated nitric acid to prepare etching solution 1.

[0160] In addition, a polythiophene-based conductive polymer (Baytron PH 500 manufactured by H.C. Starck Co., Ltd.) was placed on the surface of a 2.5×5 cm square polyethylene terephthalate (PET) sheet so that the weight of the conductive polymer Film formation was performed at 100 mg, and the member thus produced was subjected to an etching test.

[0161] The conductive polymer test piece formed into a film was immersed in 100 g of this etching solution, stirred at room temperature for 27 hours, and dissolved.

[0162] Next, the CAN concentration was determined by a titration method (redox titration method) using potassium iodide. The results are shown in Table 4 and figure 2 .

[0163] As a result, it was confirmed that the CAN concentration decreased as the etching amount of ...

Embodiment 2

[0170] In the same manner as in Example 1, etchant 2 shown in Table 3 was prepared. In addition, a polythiophene-based conductive polymer (Baytron PH 500 manufactured by H.C. Starck Co., Ltd.) was similarly formed on the surface of a 2.5×5 cm square PET sheet so that the weight of the conductive polymer was 50 mg. The components thus produced were used for etching tests. The conductive polymer was dissolved in the same manner as in Example 1.

[0171] Next, the CAN concentration was determined by a titration method (redox titration method) using potassium iodide. The results are shown in Table 5 and image 3 .

[0172] As a result, it was confirmed that even if the concentration of CAN and the concentration of nitric acid were changed, the concentration of CAN decreased as the amount of conductive polymer added increased.

[0173] [table 5]

[0174]

Embodiment 3

[0176] The conductive polymer test piece was immersed in 100 g each of etching solutions 1 and 2, and stirred at room temperature for 27 hours to dissolve. Next, the oxidation-reduction potential (ORP) was measured, and the results are shown in Table 6.

[0177] As a result, it was confirmed that ORP decreased as the amount of conductive polymer added increased. From this, it can be seen that the etchant can be managed according to the ORP.

[0178] [Table 6]

[0179]

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Abstract

An object of the present invention is to provide an etching method that enables control of etching of a conductive polymer using a specific cerium (IV) compound to be carried out simply and easily, thus ensuring that etching is carried out stably, and to provide a substrate having a conductive polymer that has been etched by the etching method. The etching method of the present invention includes an etching step of etching a conductive polymer using an etching liquid containing a specific cerium (IV) compound, an analysis step of analyzing the etching liquid by at least one analysis means selected from the group consisting of oxidation-reduction potential measurement, oxidation-reduction titration, and electrical conductivity measurement, and a control step of controlling the etching step according to the results obtained in the analysis step.

Description

technical field [0001] The invention relates to an etching method and a substrate with conductive polymers. Background technique [0002] At present, as a transparent conductive film, ITO (indium tin oxide) containing indium (In) is mainly used, but it is also estimated that In is a rare element with a recoverable reserve of 3,000 tons, and it will be around 2011 to 2013. Recoverable reserves are exhausted, and an alternative material to ITO that does not use In is currently being studied. The conductivity of conductive polymers has been significantly improved, and conductive polymers are expected to be used as substitute materials for ITO. [0003] This conductive polymer has the characteristics of conductivity, light transmission, luminescence, and flexibility after film formation, and its application to transparent conductive films, electrolytic capacitors, antistatic agents, batteries, and organic EL elements is being studied. , part of which has been practical. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/00H01B5/14H01B13/00H01L21/306
CPCH01L51/0017H01L21/32134C08J2300/108C08J7/12H01L51/0023H10K71/231H10K71/621
Inventor 西村康雄井原孝
Owner TSURUMISODA
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