Display assembly and display device using the same

Patent metadata

Field	Value
Publication number	US-2016377263-A1
Application number	US-201514936797-A
Country	US
Kind code	A1
Filing date	Nov 10, 2015
Priority date	Jun 23, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A display assembly and display device using the same is disclosed. The display assembly includes a light source for outputting blue light; a quantum dot converter for converting the blue light output from the light source to output at least one of red light and green light; a light transmitter for transmitting the blue light output from the light source by scattering all or part of the blue light; and a substrate on which the quantum converter and the light transmitter are arranged.

First claim

What is claimed is:

1 . A display assembly comprising:
a light source configured to output blue light; a quantum dot converter configured to convert the blue light output from the light source to output at least one of red light and green light; a light transmitter configured to transmit the blue light output from the light source by scattering all or part of the blue light; and a substrate on which the quantum converter and the light transmitter are arranged.

2 . The display assembly of claim 1 ,
wherein the quantum dot converter comprises a first output face from which at least one of red light and green light is output, wherein the light transmitter includes a second output face from which the blue light is output, and wherein an area of the first output face is greater than an area of the second output face.

3 . The display assembly of claim 1 ,
wherein the quantum dot converter comprises at least one of at least one red light quantum dot element configured to convert blue light output from the light source to red light and to output red light and at least one green light quantum dot element configured to convert blue light output from the light source to green light and to output green light.

4 . The display assembly of claim 3 ,
wherein the at least one red light quantum dot element comprises a third output face from which red light is output, wherein the at least one green light quantum dot element comprises a fourth output face from which green light is output, and wherein at least one of an area of the third output face and an area of the fourth output face is greater than an area of a second output face of the light transmitter.

5 . The display assembly of claim 3 ,
wherein the at least one red light quantum dot element, the at least one green light quantum dot element, and the light transmitter are arranged on the substrate in a predetermined pattern.

6 . The display assembly of claim 5 ,
wherein the number of the at least one red light quantum dot element and/or the number of the at least one green light quantum dot element arranged on the substrate is greater than the number light transmitters arranged on the substrate.

7 . The display assembly of claim 5 ,
wherein the substrate includes unit sections in which the at least one red light quantum dot element, the at least one green light quantum dot element, and the light transmitter are located.

8 . The display assembly of claim 7 ,
wherein one unit section includes a plurality of sub-sections, and wherein the light transmitter is located in at least one of the sub-sections while at least one of the at least one red light quantum dot element and the at least one green light quantum dot element is located in the other sub-sections.

9 . The display assembly of claim 8 ,
wherein at least one of the at least one red light quantum dot element and the at least one green light quantum dot element is located in more sub-sections than the light transmitter.

10 . The display assembly of claim 3 ,
wherein the light source comprises multiple light sources, and the multiple light sources irradiate blue light toward the at least one red light quantum dot element, green light quantum dot element, and light transmitter, respectively.

11 . The display assembly of claim 1 ,
further comprising: a light guide plate, on which light output from the light source is laterally incident and from which the incident light is output through an output face, wherein light output from the light guide plate is incident upon the quantum dot converter and the light transmitter.

12 . The display assembly of claim 1 ,
wherein the light source is installed to face the substrate on which the quantum dot converter and the light transmitter are arranged.

13 . The display assembly of claim 1 ,
wherein the light transmitter comprises a main body comprising a light transmitting material, and at least one scattering particle arranged inside the main body and configured to scatter incident blue light.

14 . The display assembly of claim 13 ,
wherein the at least one scattering particle comprises at least one of zinc oxide, titanium oxide, and silicon oxide.

15 . The display assembly of claim 13 ,
wherein the light transmitting material comprises at least one of natural resins, synthetic resins, and glass.

16 . A display device comprising:
a light source configured to output blue light; and a quantum dot sheet on which at least one red light quantum dot element configured to convert the blue light to red light and to output red light, at least one green light quantum dot element configured to convert the blue light to green light and to output green light, and at least one light transmitter configured to transmit the blue light by scattering all or part of the blue light and outputting the scattered light are arranged.

17 . The display device of claim 16 ,
wherein an output face of at least one of the at least one red light quantum dot element and the at least one green light quantum dot element is larger than an output face of the at least one light transmitter.

18 . The display device of claim 16 ,
wherein the number of the at least one red light quantum dot element and/or the number of the at least one green light quantum dot element is greater than the number of light transmitters arranged on the quantum dot sheed.

19 . The display device of claim 16 ,
further comprising: a liquid crystal layer, wherein the light source is arranged to face the quantum dot sheet with respect to the liquid crystal layer.

20 . The display device of claim 16 ,
further comprising: a light guide plate, on which the blue light is laterally incident and from which the incident light is output through an output face, wherein the light output through the output face is incident upon the quantum dot sheet.

21 . A display device comprising:
a plurality of light sources configured to output blue light; at least one red light quantum dot element installed to correspond to at least one first light source among the plurality of light sources configured to convert the blue light to red light and to output red light; at least one green light quantum dot element installed to correspond to at least one second light source among the plurality of light sources configured to convert the blue light to green light and to output green light; and at least one light transmitter installed to correspond to at least one third light source among the plurality of light sources configured to transmit blue light by scattering all or part of the blue light and outputting the scattered light.

22 . The display device of claim 21 ,
wherein an output face of at least one of the at least one red light quantum dot element and the at least one green light quantum dot element is larger than an output face of the at least one light transmitter.

23 . The display device of claim 21 ,
wherein the number of at least one of the at least one red light quantum dot element and the number of at least one green light quantum dot element is greater than the number of the light transmitter.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Kye Hoon

Classifications

• G02B6/0068 Primary

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title

• G02F1/133606

  including a specially adapted diffusing, scattering or light controlling members · CPC title

• G02F2202/108

  quantum wells · CPC title

• G02B6/0031

  Reflecting element, sheet or layer · CPC title

• G02F1/133617

  Illumination with ultraviolet light; Luminescent elements or materials associated to the cell · CPC title