Display device capable of generating color of light close to or identical to blue primary color of DCI-P3 color gamut

• US 10,401,682 B2
• Filed: 05/14/2017
• Issued: 09/03/2019
• Est. Priority Date: 01/25/2017
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Lin, Hsiao-Lang, Yueh, Jui-Jen, Lee, Kuan-Feng, Chen, Jia-Yuan
• Primary Examiner(s): Ngo, Huyen L
• Application Number:
  US15/594,652
• Publication Number:
  US 20180210291A1
• Time in Patent Office: 842 Days
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G02F 1/133621 providing coloured light G02F1/133617, G02F1/133533 take precedence
• CPC Class Codes: G02F 1/133624 characterised by their spectral emissions
• CPC Class Codes: G02F 2202/36 Micro- or nanomaterials

Abstract

A display device is provided and a display unit of the display device capable of generating color of light close to or identical to blue primary color of DCI-P3 color gamut includes a light emitting unit and a light converting layer disposed on the light emitting unit. The display unit emits an output light under an operation of the highest gray level, the output light having an output spectrum. An intensity integral of the output spectrum from 380nm to 493nm defines as a first intensity integral, an intensity integral of the output spectrum from 494nm to 580nm defines as a second intensity integral, a ratio of the first intensity integral over the second intensity integral defines as a first ratio, and the first ratio ranges from 5 to 20.

Claims

1. A display device, comprising:

a backlight unit;

a light modulating layer disposed on the backlight unit;

a light converting layer disposed on the backlight unit; and

a first polarization layer disposed between the light modulating layer and the light converting layer,

wherein a display unit is formed of at least a portion of the backlight unit, at least a portion of the light modulating layer, at least a portion of the light converting layer, and at least a portion of the first polarization layer,

wherein the display unit emits an output light under an operation of the highest gray level, the output light having an output spectrum, an intensity integral of the output spectrum from 380nm to 493nm defines as a first intensity integral, an intensity integral of the output spectrum from 494nm to 580nm defines as a second intensity integral, a ratio of the first intensity integral over the second intensity integral defines as a first ratio, and the first ratio ranges from 5 to 20.

2. The display device of claim 1, wherein the first ratio ranges from 5 to 10.

3. The display device of claim 1, wherein the first ratio ranges from 13 to 19.

4. The display device of claim 1, wherein the output spectrum comprises a first intensity peak and a second intensity peak, the first intensity peak is a maximum peak of the output spectrum from 380nm to 493nm, the second intensity peak is a maximum peak of the output spectrum from 494nm to 580nm, a ratio of the first intensity peak over the second intensity peak defines as a second ratio, and the second ratio ranges from 5 to 35.

5. The display device of claim 4, wherein the second ratio ranges from 8 to 16.

6. The display device of claim 4, wherein the second ratio ranges from 21 to 32.

7. The display device of claim 1, further comprising a second polarization layer, wherein the light modulating layer is disposed between the first polarization layer and the second polarization layer.

8. The display device of claim 7, wherein the light modulating layer is disposed between the backlight unit and the light converting layer.

9. The display device of claim 7, wherein the light converting layer is disposed between the backlight unit and the light modulating layer.

10. The display device of claim 1, wherein the light converting layer comprises a quantum dot material a color filter material, or a phosphor material.