Patent ID: 8013952

Claim:
An LED backlight device comprising: a first substrate having optical transparency and having a first surface and a second surface opposite to said first surface; an LED thin-film fixed to said first surface of said first substrate, said LED thin-film being formed of epitaxially grown inorganic material layers as a P-N junction device; an anode electrode and a cathode electrode formed on said LED thin-film; an anode driver IC and a cathode driver IC for driving said LED thin-film to emit light; an anode wiring formed on said first surface of said first substrate to electrically connect said anode driver IC and said anode electrode of said LED thin-film, a cathode wiring formed on said first surface of said first substrate to electrically connect said cathode driver IC and said cathode electrode of said LED thin-film, and a second substrate having optical transparency and having a function to diffuse incident light, said second substrate being provided so as to face said second surface of said first substrate.