the light guide plate 20 referring to fig2 and 3 the light guide plate 20 is made of a transparent material such as glass or plastic the plastic material can be any of acrylic polyvinylchloride resin pvc polycarbonate pc polystyrene ps polypropylene pp the light guide plate 20 includes a bottom surface 202 and an emitting surface 204 the bottom surface 202 further includes a plurality of micro dots 23 the micro dots 23 are arranged in a uniform matrix formation the micro dots 23 are generally frustum shaped and are formed by etching the micro dots 23 on the bottom surface 202 of the transparent plate 20 can scatter and reflect incident light beams as to almost completely eliminate internal reflection of the light beams and make the light beams more uniformly emit from the emitting surface 204 a largest diameter of each micro dot 23 is in the range from 20 micron to 40 micron an orthogonal cross section of each micro dot 23 is trapezium shape and subtends an angle in the range from about 20 to about 70 degrees each micro dot 23 has a fluorescent layer 25 formed by electrostatic spraying the material forming the fluorescent layer 25 has red r green g and blue b colors the red fluorescent material may be zinc sulfide mixed with copper the green fluorescent material may be sodium fluorescein the red fluorescent material may be rhodamine yttrium aluminium garnet the ultraviolet light from the light source 10 will excite the fluorescent layer 25 to emit light the diffusing plate 40 includes a base 41 and a plurality of diffusing protrusions 43 the base 41 is made of polyethylene.