LK Chem, established in 2007 and listed on KOSDAQ on February 25, 2025, is a specialty chemical materials company focused on semiconductor thin-film deposition processes.
Its core products are CP and PCP ligands used for High-k dielectric film formation and DIS precursor used for Low-k film formation in the atomic layer deposition (ALD) process, and as of 2023 revenue mix by product was reported at 68.5% High-k, 12.1% Low-k, 2.0% other materials, and 17.4% other (merchandise, etc.).
CP and PCP ligands serve as key raw materials for synthesizing various High-k precursors, while DIS precursor is used to form uniform nitride films on wafer surfaces in system semiconductor and 3D NAND flash processes.
More recently the company has expanded its lineup with new High-k products such as molybdenum precursor and yttrium ligand, raising their share of revenue.
In other specialty chemical areas, the company produces perovskite solar cell photovoltaic materials and charge transport layer materials, purification solvents for carbon capture, metal extractants for secondary battery recycling, and inorganic metal materials for displays, pursuing business diversification.
Although the company is grouped under the secondary battery theme in KOSDAQ sector classification, its actual revenue contribution is overwhelmingly from semiconductor materials, with battery-related products constituting only a small new-business line.
The company is understood to supply materials to large semiconductor manufacturers, and industry sources note that because material switching in semiconductor processes requires years of qualification, once a supplier is adopted it tends to maintain a long-term relationship.
In the competitive landscape, overseas firms, notably from Japan, have long held source technology for precursors, but the company appears to be expanding its footprint as a domestic supplier amid growing demand for localization.