Patent attributes
A thin keypad assembly includes a panel, a lining sheet and a light-guiding layer. The panel has hollowed numerals, letters, various symbols, a navigation-key pattern, a dialing pattern and an ending pattern, and grooves formed between keys. The lining sheet is disposed on the panel and has a navigation-key pattern thereon. The navigation-key pattern has a light-shielding layer and light-transmitting positions thereon, and the light-shielding layer has a light-reflecting layer thereon. The light-guiding layer is disposed on the lining sheet, and the position thereof corresponds to the key having a plurality of light-guiding micro structures and projecting bodies. The light-guiding layer, light-shielding layer and the light-reflecting layer extend onto the surface of the panel through the grooves.
