Stripping agent containing alkylamide mixture

Abstract

The invention relates to a stripping agent containing an alkylamide mixture. The stripping agent containing an alkylamide mixture comprises 50-70wt% of N-methylformamide, 30-50wt% of N,N-dimethylacetamide, and the balance water. The stripping agent containing an alkylamide mixture has water intersolubility, no corrosivity to copper or a copper alloy, and no toxicity to human and the environment. Because the stripping agent containing an alkylamide mixture only comprises the two main ingredients, the used stripping agent can be easily recovered by fractionation and is restructured into an original formula for recycle in the manufacturing process, thus the effects of reducing a cost and protecting the environment are achieved. The invention further provides a method for removing light resistance by the stripping agent containing an alkylamide mixture.

Description

technical field [0001] The invention relates to a stripping agent containing an alkylamide mixture, in particular to an alkylamide stripping agent used for removing photoresists or for cleaning or removing an alignment film. Background technique [0002] The technology industry continues to develop and progress, and the technology of thin film transistor liquid crystal display (TFT-LCD) is constantly evolving, and because thin film transistor liquid crystal display has small size, no space, low power consumption, low radiation, and durable products, etc. Therefore, it has gradually replaced displays made of cathode ray tubes (CRT). Moreover, as the demand for displays continues to increase, the output of thin film transistor liquid crystal displays is gradually increasing, and following the evolution of technology generations, five-generation, six-generation, seven-generation, and even eight-generation factories are constantly being built. The amount invested in the display...

AI Technical Summary

Problems solved by technology

[0005] However, the composition of the known stripping agent is quite complex, and may be composed of 4 to 6 chemical substances, so it is very difficult to recycle, and after recycling, a very complicated reduction procedure is required to recombine the stripping agent

Therefore, recycling known strippers is not easy to achieve reasonable economic benefits in practical applications, and also reduces the willingness of factories to use stripper recovery systems. In this way, not only lose the opportunity to reduce costs, but also cause a considerable burden on the environment

[0006] In addition, because the components of many known strippers are highly volatile and prone to excessively high evaporation rates, the bath life of these strippers is limited and special precautions are required during their storage and use. Precautions for human and environmental safety

[0007] However, the simple composition strippers available so far cannot completely remove the photoresist from various substrates.

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