Backlight unit
AssigneeSeoul Semiconductor Co., Ltd.
InventorsWon Cho, Bi-Yong Jeong
Life of this patent
Estimating the term…
Abstract
The present invention relates to a backlight unit that includes at least one first light emitting diode (LED) package and at least one second LED package, wherein the first LED package includes a blue LED chip, a green LED chip, and a first phosphor, the first phosphor being excited by blue light and to emit light to be mixed with blue light and green light respectively emitted from the blue LED chip and the green LED chip, the first LED package to thereby emit white light. The second LED package includes a blue LED chip, a red LED chip, and a second phosphor, the second phosphor being excited by blue light and to emit light to be mixed with blue light and red light respectively emitted from the blue LED chip and the red LED chip, the second LED package to thereby emit white light.
Claims14
A backlight unit, comprising first light emitting diode (LED) packages and second LED packages that are alternately arranged on a surface of the backlight unit, each of the first and second LED packages being disposed on a different region of the surface of the backlight unit,
- wherein each first LED package comprises a blue LED chip, a green LED chip, and a first phosphor, the first phosphor being excited by blue light to emit light to be mixed with blue light and green light respectively emitted from the blue LED chip and the green LED chip, the first LED package to thereby emit white light, and
- wherein each second LED package comprises a blue LED chip, a red LED chip, and a second phosphor, the second phosphor being excited by blue light to emit light to be mixed with blue light and red light respectively emitted from the blue LED chip and the red LED chip, the second LED package to thereby emit white light.
A backlight unit, comprising:
- a first set of light emitting diode (LED) packages comprising first LED packages and second LED packages that are alternately arranged on a surface of the backlight unit, each of the first and second LED packages being disposed on a different region of the surface of the backlight unit,
- wherein each first LED package comprises a first LED to emit a first light, a second LED to emit a second light, and a first phosphor to emit a third light in response to the first light, the first light, the second light, and the third light being different colored lights that mix together to form white light, and
- wherein each second LED package comprises a third LED to emit a fourth light, a fourth LED to emit a fifth light, and a second phosphor to emit a sixth light in response to the fourth light, the fourth light, and the fifth light, and the sixth light being different colored lights that mix together to form white light.
A backlight unit, comprising first light emitting diode (LED) packages and second LED packages alternately arranged on a surface of the backlight unit, each of the first and second LED packages being disposed on a different region of the surface of the backlight unit,
- wherein each first LED package comprises a blue LED chip, a green LED chip, and a first phosphor, the first phosphor being excited by blue light to emit light to be mixed with blue light and green light respectively emitted from the blue LED chip and the green LED chip, the first LED package to thereby emit white light,
- wherein each second LED package comprises a blue LED chip, a red LED chip, and a second phosphor, the second phosphor being excited by blue light to emit light to be mixed with blue light and red light respectively emitted from the blue LED chip and the red LED chip, the second LED package to thereby emit white light, and
- wherein the first and second LED packages each comprise an electrode contacting the surface of the backlight unit.
Dependencies are inferred from the claim text.