There is provided a spread illuminating apparatus to ensure excellent light conductivity. A cover is integrally provided over a transparent substrate sandwiching a fluid (cushioning material) of a gel, liquid, or gaseous substance. With this structure, dust generated in assembly process is prohibited...http://www.google.co.uk/patents/US20020106182?utm_source=gb-gplus-sharePatent US20020106182 - Spread illuminating apparatus with cover provided over transparent substrate
