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Backlight unit and display device including the same

  • US 10,705,278 B2
  • Filed: 11/06/2018
  • Issued: 07/07/2020
  • Est. Priority Date: 01/08/2018
  • Status: Active Grant
First Claim
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1. A backlight unit comprising:

  • a light source that emits light having a first predetermined wavelength;

    a light guide plate configured to guide light emitted from the light source;

    a light conversion layer disposed on the light guide plate; and

    a reflective pattern layer arranged between the light guide plate and the light conversion layer in which light traveling in the light guide plate is reflected by the reflective pattern layer, the reflective pattern layer including a plurality of holes, andwherein the light conversion layer absorbs at least a portion of the light emitted from the light source at the first predetermined wavelength and generates light having a second predetermined wavelength different than the first predetermined wavelength;

    a reflective layer, wherein the light conversion layer is disposed between the reflective pattern layer and the reflective layer;

    wherein the light conversion layer is configured to convert incident light that passes through the plurality of holes of the reflective pattern layer from the light guide plate at the first predetermined wavelength into converted light at least one of the second predetermined wavelength or a third predetermined wavelength, and wherein the converted light is reflected by the reflective layer and passes through the plurality of holes of the reflective pattern layer.

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