Derived optical key-pad and derived optical key-pad assembly

摘要

This invention by the derived optical board key pad and the fact that regarding the derived optical board key pad assembly, from the especially side prints with the paste which has of the derived optical board of the portable telephone which light is supplied reflected and spread quality all over forms the key character pattern of line type or surface type and by the fact that the corresponding derived optical board carries out key pad role, it is the derived optical board key pad which it tries to be able to retrench the number of components of the portable telephone and something regarding the derived optical board key pad assembly.The derived optical board key pad by this invention, it is the permeable derived optical board which is utilized in the key pad assembly, as for the above-mentioned derived optical board the light which is supplied from the illuminant which has been connected on the side that all over it supplies on top via the key character pattern of line type or the surface type which was formed via printing, the above-mentioned key character pattern is formed in order to make various color materializations possible, the above-mentioned derived optical board crookedness is possible features that it is soft, it is the derived optical board key pad where the derived optical board itself becomes the key pad.