OPTICAL MEMBER AND DISPLAY DEVICE INCLUDING THE SAME

• US 20150354784A1
• Filed: 08/19/2015
• Published: 12/10/2015
• Est. Priority Date: 04/13/2011
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: OH, Jeong Taek
• Granted Patent: US 9,599,314 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B82Y 20/00 Nanooptics, e.g. quantum optics or photonic crystals
• CPC Class Codes: G02B 1/11 Anti-reflection coatings
• CPC Class Codes: G02B 5/0242 by means of dispersed particles
• CPC Class Codes: G02B 5/0278 used in transmission
• CPC Class Codes: G02B 5/22 Absorbing filters G02B5/201 - G02B5/208 take precedence
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G02F 2202/36 Micro- or nanomaterials
• CPC Class Codes: Y10S 977/774 Exhibiting three-dimensional carrier confinement, e.g. quantum dots

Abstract

Disclosed are an optical member and a display device including the same. The optical member includes a wavelength conversion layer to convert a wavelength of an incident light, and an impact absorbing layer on the wavelength conversion layer.

Claims

1. An optical member comprising:

a lower substrate;

an upper substrate on the lower substrate

a wavelength conversion layer between the lower substrate and the upper substrate; and

an anti-reflective layer on the lower and upper substrates,

wherein the anti-reflective layer has a refractive index lower than that of the lower and upper substrates,

wherein the wavelength conversion layer includes a host layer; and

a plurality of quantum dots in the host.

2. The optical member of claim 1, wherein the anti-reflective layer comprising;

a lower anti-reflective layer under the lower substrate; and

a upper anti-reflective layer on the upper substrate.

3. The optical member of claim 2, wherein the lower anti-reflective layer has a refractive index lower than that of the lower substrate, and wherein the upper anti-reflective layer has a refractive index lower than that of the upper substrate.

4. An optical member comprising:

a lower substrate;

an upper substrate on the lower substrate

a wavelength conversion layer between the lower substrate and the upper substrate;

a sealing improvement layer on the lower and upper substrates; and

an anti-reflective layer on the lower and upper substrates,

wherein the lower and upper substrates include one surface disposing the wavelength conversion layer; and

other surface opposite to the one surface,

wherein the sealing improvement layer is disposed on the other surface,

wherein the wavelength conversion layer includes a host layer; and

a plurality of quantum dots in the host.

5. The optical member of claim 4, wherein the sealing improvement layer comprising;

a lower sealing improvement layer under the lower substrate; and

a upper sealing improvement layer on the upper substrate.

6. The optical member of claim 5, wherein the lower sealing improvement layer has a refractive index lower than that of the lower substrates,

wherein the upper sealing improvement layer has a refractive index lower than that of the upper substrates,

7. The optical member of claim 4, wherein the anti-reflective layer comprising;

a lower anti-reflective layer under the lower substrate; and

a upper anti-reflective layer on the upper substrate.

8. The optical member of claim 7, wherein the lower anti-reflective layer has a refractive index lower than that of the lower substrate, and wherein the upper anti-reflective layer jas a refractive index lower than that of the upper substrate.

9. The optical member of claim 4, wherein an elastic modulus of the sealing improvement layer is in a range of 5.8N/cm² to 6.6N/cm².

10. The optical member of claim 4, wherein the sealing improvement layer includes a material selected from the group consisting of acrylic resin and urethane resin.

11. A display device comprising:

a light source;

a wavelength conversion member to convert a wavelength of light emitted from the light source; and

a display panel on the wavelength conversion member,

wherein the wavelength conversion member comprises;

a lower substrate;

an upper substrate on the lower substrate

a wavelength conversion layer between the lower substrate and the upper substrate; and

an anti-reflective layer on the lower and upper substrates,

wherein the anti-reflective layer has a refractive index lower than that of the lower and upper substrates,

wherein the wavelength conversion layer includes a host layer; and

a plurality of quantum dots in the host.

12. The display device of claim 11, wherein the anti-reflective layer comprising;

a lower anti-reflective layer under the lower substrate; and

a upper anti-reflective layer on the upper substrate.

13. The display device of claim 12, wherein the lower anti-reflective layer has a refractive index lower than that of the lower substrate, and wherein the upper anti-reflective layer jas a refractive index lower than that of the upper substrate.

14. A display device comprising:

a light source;

a wavelength conversion member to convert a wavelength of light emitted from the light source; and

a display panel on the wavelength conversion member,

wherein the wavelength conversion member comprises;

a lower substrate;

an upper substrate on the lower substrate

a wavelength conversion layer between the lower substrate and the upper substrate;

a sealing improvement layer on the lower and upper substrates; and

an anti-reflective layer on the lower and upper substrates,

wherein the lower and upper substrates include one surface disposing the wavelength conversion layer; and

other surface opposite to the one surface,

wherein the sealing improvement layer is disposed on the other surface,

wherein the wavelength conversion layer includes a host layer; and

a plurality of quantum dots in the host.

15. The display device of claim 14, wherein the sealing improvement layer comprising;

a lower sealing improvement layer under the lower substrate; and

a upper sealing improvement layer on the upper substrate.

16. The display device of claim 15, wherein the lower sealing improvement layer has a refractive index lower than that of the lower substrates,

wherein the upper sealing improvement layer has a refractive index lower than that of the upper substrates,

17. The display device of claim 14, wherein the anti-reflective layer comprising;

a lower anti-reflective layer under the lower substrate; and

a upper anti-reflective layer on the upper substrate.

18. The display device of claim 17, wherein the lower anti-reflective layer has a refractive index lower than that of the lower substrate, and wherein the upper anti-reflective layer jas a refractive index lower than that of the upper substrate.

19. The display device of claim 14, wherein an elastic modulus of the sealing improvement layer is in a range of 5.8N/cm² to 6.6N/cm².

20. The display device of claim 14, wherein the sealing improvement layer includes a material selected from the group consisting of acrylic resin and urethane resin.