Backlight unit and display device including the same
AssigneeLG Display Co., Ltd.
InventorsSuhun Lee, Donghwi Kim
Life of this patent
Estimating the term…
Abstract
Embodiments of the present disclosure provide a backlight unit comprising at least one light emitting unit emitting light in a first wavelength band, a phosphor film exciting the light in the first wavelength band emitted from the light emitting unit to emit the light in the first to a third wavelength bands, a first reflective film disposed in a position corresponding to a rim of the phosphor film and causing to reflect the light in the first wavelength band, a second reflective film disposed adjacent to the first reflective film and causing to reflect the light in the second and third wavelength bands, and a dam disposed around the light emitting unit. A display device using the backlight unit is also provided.
Claims15
A backlight unit comprising:
- a light emitting unit configured to irradiate light in a first wavelength band;
- a phosphor film excited by the light in the first wavelength band irradiated from the light emitting unit to emit the light in the first wavelength band, a second wavelength band and a third wavelength band;
- a first reflective film disposed in a position corresponding to a rim of the phosphor film, and configured to reflect the light in the first wavelength band;
- a second reflective film disposed adjacent to the first reflective film, and configured to reflect the light in the second and third wavelength bands;
- and
- a dam disposed around the light emitting unit,
- wherein the light emitting unit further comprises:
- a plurality of light emitting devices disposed on a substrate;
- at least one reflector disposed on a partial area of the substrate between the plurality of light emitting devices;
- and
- a resin layer disposed on the plurality of light emitting devices and the at least one reflector.
A backlight unit comprising:
- a light emitting unit configured to irradiate light in a first wavelength band;
- a phosphor film excited by the light in the first wavelength band irradiated from the light emitting unit to emit the light in the first wavelength band, a second wavelength band and a third wavelength band;
- a first reflective film disposed in a position corresponding to a rim of the phosphor film, and configured to reflect the light in the first wavelength band;
- a second reflective film disposed adjacent to the first reflective film, the second reflective and configured to reflect the light in the second and third wavelength bands;
- and
- a dam disposed around the light emitting unit,
- wherein the dam is coated with a reflective film.
A display device comprising:
- a display panel;
- and
- a backlight unit configured to irradiate light onto the display panel, the backlight unit comprising:
- at least one light emitting unit configured to emit light in a first wavelength band;
- a phosphor film being excited by the light in the first wavelength band emitted from the at least one light emitting unit to emit the light in the first wavelength band, a second wavelength band and a third wavelength band;
- a first reflective film disposed in a position corresponding to a rim of the at least one light emitting unit, the first reflective film being configured to reflect the light in the first wavelength band;
- a second reflective film disposed adjacent to the first reflective film, the second reflective film being configured to reflect the light in the second and third wavelength bands;
- and
- a dam disposed around the at least one light emitting unit,
- wherein the at least one light emitting unit further comprises:
- a plurality of light emitting:
- devices disposed on a substrate;
- at least one reflector disposed on a partial area of the substrate between the plurality of light emitting devices;
- and
- a resin layer disposed on the plurality of light emitting devices and the at least one reflector.
Dependencies are inferred from the claim text.