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Solution improves efficiency of CMOS image sensors

Posted: 13 Jul 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Silecs? SC series? optical coating? CMOS image sensor?

Silecs Inc. has introduced the SC product series for use as advanced optical coatings in CMOS image sensor production. Using its unique molecular engineering approach, the company said it designed the new SC product series specifically to improve the reliability and optical efficiency of CMOS image sensors, enabling enhanced image quality for end users.

Silecs explained that the optically tuned films maximize efficient light transmission from the microlens surface to the optical sensor level, while low temperature processing and direct photo-patterning enable simplified, low-cost manufacturing. It also maintains high thermo-mechanical strength and chemical resistance to meet production process requirements.

"We have worked closely with our leading semiconductor customers to meet their specific needs with these materials," said Dr. Juha Rantala, CTO of Silecs. "Our fundamental technology portfolio in optical and electronic materials enables us to provide a unique combination of properties that meets the requirements of CMOS image sensor manufacturers very well."

The SC 100 and SC 200 products are used primarily to coat and protect microlens arrays on the CIS chip surface. Meanwhile, the SC 300 is designed for planarization and passivation between the color filter and microlens arrays, and provides UV blocking for further device protection. SC 400 is designed to planarize high aspect ratio deep trench applications up to 5n depth, while maintaining high crack resistance and thermal stability up to 450C. In addition to outstanding optical properties, Silecs said, all SC products also offer excellent electrical performance and are compatible with etchback and CMP processes.

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