Light emitting diode chip package
View Patent ↗A light emitting diode (LED) chip package including: a package body; an LED chip mounted on the package body and emitting an excited light; a phosphor layer including a phosphor absorbing the excited light and emitting a wavelength conversion light obtained by converting a wavelength of the excited light and a phosphor resin mixed with the phosphor; and a reflector layer including a reflector formed between the LED chip and the phosphor layer, transmitting the excited light to the phosphor layer, and reflecting the wavelength conversion light from the phosphor layer, and a reflector resin mixed with the reflector.
1. A light emitting diode (LED) chip package comprising:
a package body having a cavity to receive an LED chip therein;
the LED chip mounted on the package body and emitting an excited light;
a phosphor layer including a phosphor absorbing the excited light and emitting a wavelength conversion light obtained by converting a wavelength of the excited light and a phosphor resin mixed with the phosphor; and
a reflector layer including a particle-shaped reflector formed between the LED chip and the phosphor layer, transmitting the excited light to the phosphor layer, and reflecting the wavelength conversion light from the phosphor layer, and a reflector resin mixed with the reflector,
wherein the phosphor layer and the reflector layer are attached to an inner wall of the cavity, enclosing the cavity provided therein, and
wherein the reflector and the reflector resin have a same refractive index at the wavelength of the excited light and have a different refractive index at a wavelength of the converted light.
2. The LED chip package of claim 1 , wherein the LED chip is a blue LED.
3. The LED chip package of claim 1 , wherein the LED chip is an UV (Ultra Violet) LED.
4. The LED chip package of claim 1 , wherein the reflector has a radius of 1 to 150 μm.
5. The LED chip package of claim 1 , wherein the reflector is one selected from a group consisting of optical glass, silica, talc, zirconium, zinc oxide, and titanium dioxide.
6. The LED chip package of claim 1 , wherein the reflector resin is one selected from a group consisting of a polymethyl methacrylate (PMMA) resin, a polystyrene resin, a polyurethane resin, a benzoguanamine resin, and silicone.
7. The LED chip package of claim 1 , wherein the excited light is a blue light and the wavelength conversion light is a yellow light.
8. The LED chip package of claim 1 , wherein the LED chip package is a white LED chip package.
9. The LED chip package of claim 1 , wherein the package body comprises a reflective plate.
10. The LED chip package of claim 1 , further comprising a transparent resin layer formed between the LED chip and the reflector layer and transmitting the excited light.