Transparent conductive films are highly functional materials, and essential in displays and touch-panels as a transparent electrode. With its application expanding, e.g. electronic paper, organic EL light emitting elements and displays, the demand is growing for transparent conductive films that are lightweight or highly flexible. In FY2013, the market is expected to be worth 30 billion to 40 billion yen.
Currently, ITO (indium tin oxide) films are generally used for transparent conductive films. However, they are easy to crack when flexed, and have a limited range of sheet resistance, thereby sometimes failing to achieve desired performance, and posing various challenges that may hinder future growth. In addition, since indium is a rare metal, there are concerns for its eventual depletion or skyrocketing of prices.
“Exclear”, developed by Fujifilm, incorporates findings from functional material research, precision thin coating technology and image-processing technology conducted over many years for the development of photographic films and flat-panel display materials. Fine-pitch silver patterns and transparent conductive materials are placed on a clear PET (polyethylene terephthalate) substrate to achieve a high level of transmittance, flexible performance and a wider range of sheet resistance.