Electronic Wet Chemicals – The Indispensable Materials

1. Electronic Wet Chemicals – The Indispensable Materials Electronic wet chemicals are one of the most indispensable materials for the production process of display panels, semiconductors, solar cells, etc. Its chemical property not only directly attributes to the quality of the final electronic products but also significantly impacts microelectronics manufacturing and industrialization. What are electronic wet chemicals? Electronic wet chemicals, also known as ultra-clean and high-purity reagents, with the major component’s purity greater than 99.99%. It is generally required to control the particle size of impurity particles to be less than 0.5 μm and the content of metal impurities to be less than the ppm level. Electronic wet chemicals are reagents with the highest requirements regarding particle control and impurity content among chemical reagents. Electronic wet chemicals are a subbranch of electronic chemicals, and various liquid chemical materials are used in the manufacturing process of microelectronics and optoelectronics. According to their compositions and applications, electronic wet chemicals can be further divided into general wet electronic chemicals and functional wet electronic chemicals. General electronic wet chemicals are single-component and single-function liquid electronic chemicals that are widely used, such as acids, alkalis, organic solvents, etc. Functional electronic wet chemicals refer to chemicals that achieve special functions and meet process requirements in manufacturing through compounding methods, such as stripping liquid, developer, etching liquid, cleaning liquid, etc. Specific classifications of electronic wet chemicals Category Subcategory Product Name Hydrofluoric acid, nitric acid, hydrochloric acid, Acids sulfuric acid, acetic acid, etc. Ammonia, sodium hydroxide, potassium hydroxide, Alkalis etc. Alcohols Methanol, ethanol, isopropanol, etc. General Electronic Ketones Acetone, butanone, methyl isobutyl ketone, etc. Wet Chemicals Esters Ethyl acetate, butyl acetate, isoamyl acetate, etc. Organic solvents Hydrocarbons Toluene, xylene, cyclohexane, etc. Halogenated Trichloroethylene, trichloroethane, methyl chloride, hydrocarbons carbon tetrachloride, etc. Others Hydrogen peroxide, etc. Metal etchant, buffered oxide etchant, ITO etchant, Etchants silicon etchant, etc. Functional Cleaning solution after copper polishing, cleaning Electronic Wet solution after etching of aluminum process, cleaning Chemicals Cleaning liquids solution after etching of copper process, cleaning solution after removing HKMG false gate, cleaning solution for removing flash.

2. Propylene glycol methyl ether acetate, propylene Diluents glycol methyl ether, ethyl lactate. Photoresist Developers Positive film developer, negative film developer, etc. supporting Positive film stripping solution, negative film stripping reagents Stripping solution, stripping cleaning solution, acidic stripping Solutions solution, etc. Applications of Electronic Wet Chemicals There are three major application areas of electronic wet chemicals, i.e., the panel display manufacturing process, the semiconductor manufacturing process, and the solar panel manufacturing process. Specific application links and related technical requirements for electronic wet chemicals in different fields are compared as follows: Mainly used in thin film process Panel display cleaning, photolithography, Highest technical manufacturing process development, etching and other requirements links. Technical Mainly used in the front-end wafer requirements for Semiconductor manufacturing of integrated circuits High technical electronic wet manufacturing process and the back-end packaging and requirements chemicals testing links. Mainly used for cleaning alkali Solar panel production, diffusion to P-N Relatively low technical manufacturing process junction, cleaning, etching and requirements other links.