Quantum dot/remote phosphor display system improvements

Patent metadata

Field	Value
Publication number	US-11454847-B2
Application number	US-201916568201-A
Country	US
Kind code	B2
Filing date	Sep 11, 2019
Priority date	Sep 19, 2012
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

A display system comprises light sources configured to emit first light with a first spectral power distribution; light regeneration layers configured to be stimulated by the first light and to convert at least a portion of the first light and recycled light into second light, the second light comprising (a) primary spectral components that correspond to primary colors and (b) secondary spectral components that do not correspond to the primary colors; and notch filter layers configured to receive a portion of the second light and to filter out the secondary spectral components from the portion of the second light. The portion of the second light can be directed to a viewer of the display system and configured to render images viewable to the viewer.

First claim

What is claimed is:

1. A method, comprising:
using a light modulation layer to modulate transmissive light;
wherein a color filter layer comprises a plurality of pixel structures in a plurality of pixels,
wherein each pixel in the plurality of pixels comprises one or more subpixels in a plurality of subpixels, wherein each pixel structure in the plurality of pixel structures comprising one or more subpixel structures in the plurality of subpixels;

using each subpixel structure in the one or more subpixel structures of each such pixel structure to pass a corresponding primary color in a plurality of primary colors and to reflect other primary colors, other than the corresponding primary color, in the plurality of primary colors; and
stimulating a light regeneration layer, disposed in between the light modulation layer and the color filter layer, by specific spectral components of light that transmits through the light regeneration layers and to convert at least a portion of the specific spectral components of light into second light, the second light comprising spectral components of one or more primary colors in the plurality of primary colors.

2. The method as recited in claim 1 , wherein the light regeneration layer extends across the plurality of subpixels with homogeneous distribution of light regeneration materials over subpixels of different primary colors in the plurality of subpixels.

3. The method as recited in claim 1 , wherein the light regeneration layer extends across the plurality of subpixels with non-homogeneous distribution of light regeneration materials configured to generate different primary colors in the one or more subpixels.

4. The method as recited in claim 1 , wherein the color filter layer comprises a dichroic mirror that reflects the light of the one or more other primary colors.

5. The method as recited in claim 1 , wherein the display system further comprises a second color filter layer disposed in between the light regeneration layer and the light modulation layer.

6. The method as recited in claim 5 , wherein the second color filter layer comprises a homogeneous dichroic mirror configured to reject light of the one or more primary colors.

7. The method as recited in claim 5 , wherein the second color filter layer comprises a non-homogeneous dichroic mirror.

8. The method as recited in claim 1 , wherein the light regeneration layer comprises at least one of quantum dot materials, or phosphor materials.

9. The method as recited in claim 1 , wherein each pixel in the plurality of pixels comprises a plurality of subpixel types that impart respective primary colors.

Assignees

• Dolby Laboratories Licensing Corp

Inventors

• Ninan Ajit
• Wan Chun Chi
• Kunkel Timo
• Miller Michael Eugene

Classifications

• Y10S977/774

  Exhibiting three-dimensional carrier confinement, e.g. quantum dots · CPC title

• B82Y20/00

  Nanooptics, e.g. quantum optics or photonic crystals · CPC title

• H04N13/334

  using spectral multiplexing · CPC title

• G02F1/133514 Primary

  Colour filters · CPC title

• G02B5/22

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title