A method and system for providing content to a receiving device from a local headend is set forth. A lowering finger, in slidable connection with a cylinder like chamber, is utilized to create a vacuum in a chamber. The configuration provides a much thinner dimension for the flat panel display with touch function while the touch function is less interfered by the display panel. A liquid crystal layer thickness-adjustment layer can be interposed between at least the substrate of the pair of substrates and the liquid crystal layer. The electric connecters for high voltage is provided between the body and the collector cassette for electrically connecting and disconnecting the body and the collector cassette through one-touch operation. By removing one of the release films and from the electronic shielding light-transmitting member and bonding the member to an optical filter or a plasma panel, there can be obtained an optical filter or a plasma panel having an electromagnetic shielding layer of excellent transparency.