Cymer, Inc., together with its subsidiaries, engages in the development, manufacture, and marketing of light sources for the manufacturers of photolithography tools in the semiconductor equipment industry. It offers installed base products in support of chipmaker customers used in their advanced wafer patterning production processes. The company also supplies deep ultraviolet light sources to lithography tool manufacturer customers, who integrate the light source into their wafer steppers and scanners, which they then provide to chipmakers. Its products include 193 nanometers (nm) ArF immersion light sources, 193 nm ArF dry light sources, and 248 nm KrF light sources. In addition, the company invests in the development of extreme ultraviolet sources for chip manufacturing. Further, it develops, integrates, markets, and supports silicon crystallization tools used in the manufacture of various types of displays, including high-resolution low temperature poly-silicon liquid crystal displays and organic light emitting diode displays; and installed base products for use in photolithography systems used in the manufacture of semiconductors. Additionally, the company offers spare and replacement parts for light sources. Cymer, Inc. markets its products in the United States, Europe, Japan, Taiwan, South Korea, Singapore, and China. The company was founded in 1986 and is headquartered in San Diego, California.