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US 11,237,314 B2Granted
Display apparatus, light guide plate thereof and manufacturing method for the same
AssigneeSamsung Electronics Co., Ltd.
InventorsKilhong Lee, Youngchol Lee, Hyunho Lee, Taehee Jeon, Byoung-Jin Cho, Suk-Ju Choi
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Abstract
Provided is a display apparatus including: a liquid crystal panel configured to display an image; a light guide plate configured to guide light toward the liquid crystal panel; and a light source positioned adjacent to a side of the light guide plate, wherein the light guide plate includes a substrate having transparency, and a plurality of quantum dot capsules dispersed inside the substrate to change a color of light emitted from the light source.
Claims5
A display apparatus comprising:
- a liquid crystal panel configured to display an image;
- a light guide plate configured to guide light toward the liquid crystal panel;
- and
- a light source positioned adjacent to a side of the light guide plate,
- wherein the light guide plate comprises a substrate having transparency, and a plurality of quantum dot capsules that are dispersed in the substrate,
- wherein the substrate and the plurality of quantum dot capsules are integrated to form the light guide plate, by injecting the plurality of quantum dot capsules into a molten solution of the substrate that is extruded,
- wherein the plurality of quantum dot capsules configured to change a color of light emitted from the light source, and the light source includes a first light source positioned adjacent to a first side of the light guide plate and a second light source positioned adjacent to a second side of the light guide plate, the second side being opposite to the first side,
- wherein the light guide plate comprises a first surface, which faces the first light source and to which light emitted from the first light source is incident, a second surface which faces the second light source and to which light emitted from the second light source is incident, a third surface which faces the liquid crystal panel and through which light, which is incident from the light source, exits from the light guide plate, and a fourth surface being opposite to the third surface,
- wherein a number of the plurality of quantum dot capsules per a unit volume is greater at a position toward a center portion of the light guide plate than at a position toward the first surface or the second surface,
- wherein the fourth surface is flat and does not include any pattern for reflecting the light, which is incident from the light source,
- wherein each of the plurality of quantum dot capsules includes a quantum dot resin being a mixture of a plurality of quantum dots and a cured material, and a protection layer coated on a surface of the quantum dot resin to surround the quantum dot resin, and
- wherein the protection layer includes a polystyrene (PS) material.
9 more elements
A light guide plate for a display apparatus, the light guide plate comprising:
- a substrate having transparency;
- a plurality of quantum dot capsules dispersed inside the substrate and configured to change a color of light emitted from a light source, wherein the substrate and the plurality of quantum dot capsules are integrated to form the light guide plate, by injecting the plurality of quantum dot capsules into a molten solution of the substrate that is extruded;
- a first surface to which light emitted from a first light source is incident;
- a second surface to which light emitted from a second light source is incident, the second surface being opposite to the first surface;
- a third surface which faces a liquid crystal panel and through which light, which is incident from the light source, exits from the light guide plate;
- and
- a fourth surface being opposite to the third surface;
- wherein a number of the plurality of quantum dot capsules per a unit volume is greater at a position toward a center portion of the light guide plate than at a position toward the first surface and the second surface,
- wherein the fourth surface is flat and does not include any pattern for reflecting the light, which is incident from the light source,
- wherein each of the plurality of quantum dot capsules includes a quantum dot resin being a mixture of a plurality of quantum dots and a cured material, and a protection layer coated on a surface of the quantum dot resin to surround the quantum dot resin, and
- wherein the protection layer includes a polystyrene (PS) material.
8 more elements
Dependencies are inferred from the claim text.