The invention discloses an LED
flip chip. The LED
flip chip sequentially comprises a
sapphire substrate, an epitaxial layer, a conductive reflecting layer, a
metal protective layer, a Vias and SiO2 insulating layer and
metal electrodes from bottom to top, wherein the
sapphire substrate is a
sapphire substrate, obtained after
inductive coupling plasma etching, with a graphical back side, an antireflection film is further arranged on the back side of the
sapphire substrate, the antireflection film is an antireflection film, manufactured with an
evaporation method, with
silicon dioxide
layers and
titanium dioxide
layers alternately arranged, the sum of the number of the
silicon dioxide
layers in the antireflection film and the number of the
titanium dioxide layers in the antireflection film ranges from 6 to 15, and the thickness of the
silicon dioxide layers in the antireflection film and the thickness of the
titanium dioxide layers in the antireflection film range from 20 nm to 300 nm. The invention further provides a manufacturing method of the LED
flip chip. The emitting angle of light at the bottom of the LED flip
chip is increased through a graphical
sapphire substrate technology, the light outgoing probability is increased, brightness is improved, and the brightness of
white light is improved by 1% to 7%.