Display apparatus having quantum dot unit or quantum dot sheet and method for manufacturing quantum dot unit

Patent metadata

Field	Value
Publication number	US-10424691-B2
Application number	US-201715711290-A
Country	US
Kind code	B2
Filing date	Sep 21, 2017
Priority date	Dec 5, 2016
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

There is provided a display apparatus and a method of manufacturing the same. The display apparatus includes: a quantum dot unit or a quantum dot sheet capable of improving heat dissipation performance. A wire with high heat transfer rate is provided in the quantum dot unit or the quantum dot sheet, and the wire is connected to the bottom chassis of the display apparatus so as to dissipate heat generated in the quantum dot.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel;
a light source configured to emit light;
a light guide plate configured to guide the light emitted from the light source toward the display panel;
a quantum dot unit disposed on a light path between the light source and the display panel and comprising a plurality of quantum dots and at least one wire between the plurality of quantum dots; and
a chassis configured to support the quantum dot unit,
wherein both ends of the at least one wire are connected to the chassis, and
wherein the chassis comprises a heat dissipation member and the both ends of the at least one wire are connected to the heat dissipation member.

2. The display apparatus according to claim 1 , wherein the at least one wire comprises a plurality of wires between the plurality of quantum dots.

3. The display apparatus according to claim 1 , wherein:
the light guide plate has a light-incident surface on which light emitted from the light source is incident; and
the quantum dot unit is between the light-incident surface and the light source.

4. A display apparatus comprising:
a display panel;
a light source configured to emit light;
a light guide plate configured to guide the light emitted from the light source toward the display panel;
a quantum dot unit disposed on a light path between the light source and the display panel and comprising a plurality of quantum dots and at least one wire between the plurality of quantum dots, wherein:
the quantum dot unit further comprises a glass fiber having a hollow;
the plurality of quantum dots is accommodated in the hollow; and
the at least one wire has a length greater than a length of the glass fiber and extends into the hollow to protrude from both ends of the glass fiber.

5. The display apparatus according to claim 4 , wherein the quantum dot unit further comprises a protection layer at the both ends of the glass fiber to prevent the plurality of quantum dots from being exposed.

6. The display apparatus according to claim 4 , further comprising a plurality of quantum dot units, including the quantum dot unit, stacked in a thickness direction of the light guide plate.

7. The display apparatus according to claim 6 , wherein the plurality of quantum dot units are attached to each other by an adhesive member.

8. The display apparatus according to claim 6 , further comprising:
a printed circuit board mounted with the light source and under the light guide plate in the thickness direction of the light guide plate;
a middle mold configured to support the display panel, the middle mold comprising an intermediate support part on the light guide plate in the thickness direction of the light guide plate to face the printed circuit board with the light source between the intermediate support part and the printed circuit board; and
a fixing member comprising:
a first fixing member at the intermediate support part to fix a first quantum dot unit facing the intermediate support part among the plurality of quantum dot units, and
a second fixing member installed at the printed circuit board to fix a second quantum dot unit facing the printed circuit board among the plurality of quantum dot units.

9. The display apparatus according to claim 6 , further comprising:
a printed circuit board mounted with the light source and under the light guide plate in the thickness direction of the light guide plate; and
a middle mold configured to support the display panel, the middle mold comprising an intermediate support part on the light guide plate in the thickness direction of the light guide plate to face the printed circuit board with the light source disposed between the intermediate support part and the printed circuit board,
wherein at least one of the plurality of quantum dot units is fixed to at least one of the printed circuit board and the intermediate support part.

10. The display apparatus according to claim 6 , wherein the plurality of quantum dot units are disposed to be spaced apart respectively from the light guide plate and the light source.

11. The display apparatus according to claim 4 , further comprising:
a plurality of quantum dot units, including the quantum dot unit,
wherein the plurality of quantum dot units comprises:
a first quantum dot unit comprising a first quantum dot configured to generate a first color; and
a plurality of second quantum dot units each comprising a second quantum dot configured to generate a second color different from the first color and arranged along an outer circumference of the first quantum dot unit, and

wherein the first quantum dot unit does not include the second quantum dot and the plurality of second quantum dot units do not include the first quantum dot.

12. A display apparatus comprising:
a display panel;
a light source configured to emit light to the display panel;
an optical sheet above the light source;
a quantum dot sheet adjacent to the optical sheet and comprising a plurality of quantum dots and at least one wire between the plurality of quantum dots; and
a chassis configured to support the quantum dot sheet,
wherein both ends of the at least one wire protruding from both ends of the quantum dot sheet are connected to the chassis.

13. The display apparatus according to claim 12 , wherein the chassis comprises a heat dissipation member and the both ends of the at least one wire are connected to the heat dissipation member.

14. The display apparatus according to claim 12 , further comprising:
a diffuser plate between the display panel and the light source and configured to diffuse the light emitted from the light source and guide the light toward the display panel,
wherein the quantum dot sheet is between the optical sheet and the diffuser plate.

15. The display apparatus according to claim 12 , wherein:
the quantum dot sheet further comprises at least one quantum dot unit comprising a glass fiber having a hollow,
the plurality of quantum dots is accommodated in the hollow of the glass fiber, and
the at least one wire is aligned to penetrate the hollow of the glass fiber.

16. The display apparatus according to claim 15 , wherein the at least one quantum dot unit further comprises a protection layer at both ends of the glass fiber configured to prevent the plurality of quantum dots from being exposed.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jang Nae-Won
• Hur Jean
• Park Tae Soon
• Yoo Jun-Mo

Classifications

• G02B6/0085

  Means for removing heat created by the light source from the package · CPC title

• G02F2202/36

  Micro- or nanomaterials · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• F21V2200/10

  of light guides of the optical fibres type · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title