Liquid crystal display module direct light illuminating unit for use in computer monitor, has optical transform units each having preset depth and preset width to change paths of light transmitting through surface profile

摘要

The unit has a diffuser mounted on a case (10) that is above a lamp. The diffuser has a substrate on a surface of which a surface profile is directly formed. The surface profile has a set of optical transform units to form a predetermined pattern. Each of the optical transform units have a predetermined depth and a predetermined width respectively to change paths of light transmitting through the surface profile.