Display apparatus

Patent metadata

Field	Value
Publication number	US-2016291231-A1
Application number	US-201514822112-A
Country	US
Kind code	A1
Filing date	Aug 10, 2015
Priority date	Mar 31, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

Provided is a display apparatus including: a display panel; and a backlight unit configured to output light to the display panel, wherein the backlight unit includes: a light source configured to emit light having a particular color; a light guide plate (LGP) configured to scatter the light incident from the light source and configured to emit the scattered light through a light emitting surface; and an optical converter configured to convert the light emitted from the light source and including an optical conversion pattern disposed on an inner side from the display panel, the optical converter including an optical conversion material for converting color of light; and wherein the optical converter is provided at an edge portion of the backlight unit.

First claim

What is claimed is:

1 . A display apparatus comprising:
a display panel; and a backlight unit configured to output light to the display panel, wherein the backlight unit comprises:
a light source configured to emit light having a particular color;
a light guide plate (LGP) configured to scatter the light incident from the light source and configured to emit the scattered light through a light emitting surface; and
an optical converter configured to convert the light emitted from the light source and comprising an optical conversion pattern disposed on an inner side from the display panel, the optical converter including an optical conversion material for converting color of light; and
wherein the optical converter is provided at an edge portion of the backlight unit.

2 . The display apparatus of claim 1 , wherein the optical conversion material comprises a fluorescent material.

3 . The display apparatus of claim 2 , wherein the backlight unit further comprises a mold frame configured to support the display panel, and
the optical converter is disposed on at least one of an inner surface of the mold frame or an inner surface of the LGP.

4 . The display apparatus of claim 3 , wherein the mold frame comprises:
a front surface on which the display panel is supported; and a rear surface comprising an installation groove, the optical converter provided in the installation groove.

5 . The display apparatus of claim 1 , wherein the optical conversion pattern comprises at least one of a circular shape, an oval shape, a rectangular shape, and a polygonal shape.

6 . The display apparatus of claim 5 , wherein the optical conversion pattern is provided on a rear surface of the LOP.

7 . The display apparatus of claim 1 , wherein the backlight unit further comprises a quantum dot sheet configured to convert the light emitted from the light emitting surface of the LOP.

8 . The display apparatus of claim 1 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and density of the optical conversion patterns is formed based on a position of each optical conversion pattern of the plurality of optical conversion patterns with respect to the edge portion and a center portion of the LOP.

9 . The display apparatus of claim 1 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and densities of the plurality of optical conversion patterns are decreased toward a center portion of the LGP from the edge portion of the LGP.

10 . A display apparatus comprising:
a display panel configured to form an image; a light source configured to emit light having at least one of red, green, and blue colors toward the display panel; a light guide plate (LGP) configured to scatter the light incident from the light source and configured to emit the scattered light through a light emitting surface; a mold frame supporting the display panel; a reflector member configured to reflect light leaking out of the LGP in a direction of the LGP; and an optical converter configured to convert the light emitted from the light source, wherein the optical converter is disposed on the mold frame or the LGP, comprises an optical conversion pattern and includes an optical conversion material for converting color of light.

11 . The display apparatus of claim 10 , wherein the optical conversion material comprises a fluorescent material.

12 . The display apparatus of claim 10 , wherein the optical conversion pattern is provided on a rear surface of the LOP.

13 . The display apparatus of claim 10 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and density of the plurality of optical conversion patterns are formed based on a position of each optical conversion pattern of the plurality of optical conversion patterns with respect to an edge portion of the LGP and a center portion of the LGP.

14 . The display apparatus of claim 10 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and density of the plurality of optical conversion patterns is decreased toward a center portion of the LGP from an edge portion of the LOP.

15 . A display apparatus comprising:
a display panel configured to form an image; a light source configured to emit light having a particular color; a light guide plate (LGP) configured to scatter the light incident from the light source and configured to emit the scattered light in a direction of the display panel; a quantum dot sheet configured to convert the light emitted from a light emitting surface of the LGP; a mold frame supporting the display panel; and an optical converter configured to convert the light emitted from the light source, wherein the optical converter is provided on at least one of the mold frame and the LGP and comprises an optical conversion pattern and includes an optical conversion material for converting color of light.

16 . The display apparatus of claim 15 , wherein the optical conversion pattern is provided on a rear surface of the LOP.

17 . The display apparatus of claim 15 , wherein the light source comprises one of red, green, and blue colors.

18 . The display apparatus of claim 17 , wherein the optical converter comprises a yellow fluorescent material configured to convert blue light into white light.

19 . The display apparatus of claim 15 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and density of the plurality of optical conversion patterns are formed based on a position of each optical conversion pattern of the plurality of optical conversion patterns with respect to an edge portion of the LGP and a center portion of the LGP.

20 . The display apparatus of claim 15 , wherein the optical conversion pattern comprises a plurality of optical conversion patterns and density of the plurality of optical conversion patterns is decreased toward a center portion of the LGP from the edge portion of the LGP.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jang Nae-Won
• Lee Dae-Hee
• Lee Kye Hoon
• Lee Young Chol
• Cho Byoung-Jin
• Hyung Sin-Wook

Classifications

• G02B6/0088

  of the light guide or other optical sheets in the package · CPC title

• G09G3/2003

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G02F1/1336 Primary

  Illuminating devices · CPC title

• G02B6/0043

  provided on the surface of the light guide · CPC title

• G02B6/005 Primary

  provided by one optical element, or plurality thereof, placed on the light output side of the light guide · CPC title