US 8,013,952 B2 · LED backlight device and LCD device

Abstract

A backlight device includes a first substrate having optical transparency and having a first surface and a second surface. An LED thin-film is fixed to the first surface of the first substrate. The LED thin-film is formed of epitaxially grown inorganic material layers as a P-N junction device. An anode electrode and a cathode electrode are formed on the LED thin-film. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film. An anode wiring is provided for connecting the anode driver IC and the anode electrode, and a cathode wiring is provided for connecting the cathode driver IC and the cathode electrode. A second substrate has optical transparency and having a function to diffuse incident light. The second substrate is provided so as to face the second surface of the first substrate.

Claims27

Dependent claims

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.

4 more elements

An LED backlight device comprising:

a first substrate having a function to diffuse incident light, having optical transparency and having a 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, and
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.

3 more elements

An LED backlight device comprising:

a first substrate having thermal conductivity and having a 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 first surface of said first substrate.

4 more elements

Dependencies are inferred from the claim text.

LED backlight device and LCD device

Life of this patent

LED backlight device and LCD device

Life of this patent

Abstract

Claims27