Display device

• US 10,546,203 B2
• Filed: 09/29/2017
• Issued: 01/28/2020
• Est. Priority Date: 05/31/2017
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Lin, Hsiao-Lang, Tsai, Tsung-Han
• Primary Examiner(s): Chien, Lucy P
• Application Number:
  US15/719,600
• Publication Number:
  US 20180348574A1
• Time in Patent Office: 851 Days
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133514 Colour filters
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133614 using photoluminescence, e.g. phosphors illuminated by UV or blue light
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G02F 2202/36 Micro- or nanomaterials
• CPC Class Codes: G06V 10/143 Sensing or illuminating at different wavelengths
• CPC Class Codes: G06V 40/10 Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
• CPC Class Codes: G06V 40/12 Fingerprints or palmprints
• CPC Class Codes: G06V 40/13 Sensors therefor
• CPC Class Codes: G06V 40/1329 Protecting the fingerprint sensor against damage caused by the finger
• CPC Class Codes: H01L 2224/81 using a bump connector
• CPC Class Codes: H10K 59/00 Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels

Abstract

A display device includes a first display unit emitting an output light having an output spectrum corresponding to a highest gray level of the display device, wherein an intensity integral of the output spectrum from 494 nm to 575 nm is defined as a first intensity integral, an intensity integral of the output spectrum from 380 nm to 493 nm is defined as a second intensity integral, an intensity integral of the output spectrum from 576 nm to 780 nm is defined as a third intensity integral, a summation of the second intensity integral and third intensity integral is defined as a first summation, a ratio of the first summation to the first intensity integral is defined as a first ratio, and the first ratio is greater than 0.0% and less than or equal to 37.0%.

Claims

1. A display device, comprising:

a display unit emitting an output light having an output spectrum corresponding to a highest gray level of the display device,

wherein an intensity integral of the output spectrum from 494 nm to 575 nm is defined as a first intensity integral, an intensity integral of the output spectrum from 380 nm to 493 nm is defined as a second intensity integral, an intensity integral of the output spectrum from 576 nm to 780 nm is defined as a third intensity integral, a summation of the second intensity integral and the third intensity integral is defined as a first summation, a ratio of the first summation to the first intensity integral is defined as a first ratio, and the first ratio is greater than 0.0% and less than or equal to 37.0%.

2. The display device of claim 1, wherein a ratio of the second intensity integral to the first intensity integral is defined as a second ratio, and the second ratio is greater than 0.0% and less than 37.0%.

3. The display device of claim 1, wherein a ratio of the third intensity integral to the first intensity integral is defined as a third ratio, and the third ratio is greater than 0.0% and less than 37.0%.

4. The display device of claim 1, wherein a Rec. 2020 coverage ratio of the output spectrum is greater than or equal to 60%.

5. The display device of claim 1, further comprising:

a first substrate;

a second substrate disposed opposite to the first substrate;

a light modulating layer disposed between the first substrate and the second substrate; and

a backlight module disposed adjacent to the first substrate,

wherein the display unit comprises a portion of the first substrate, a portion of the second substrate, a portion of the light modulating layer, and a portion of the backlight module.

6. The display device of claim 5, further comprising a light converting layer, wherein the light converting layer is disposed between the backlight module and the first substrate, disposed on a surface of the second substrate opposite to the light modulating layer, or disposed between the second substrate and the light modulating layer, and the display unit further comprises a portion of the light converting layer.

7. The display device of claim 6, wherein the portion of the light converting layer comprised in the display unit includes a color adjusting material, and the color adjusting material makes the output spectrum of the output light have at least one peak at a wavelength ranging from 380 nm to 493 nm or from 576 nm to 780 nm.

8. The display device of claim 7, wherein the color adjusting material includes one of yellowish quantum-dot material and bluish quantum-dot material.

9. The display device of claim 7, wherein the portion of the light converting layer comprised in the display unit includes at least two light-converting parts, and the color adjusting material in one of the light-converting parts is different from the color adjusting material in another one of the light-converting parts.

10. The display device of claim 7, wherein the light converting layer comprises a multilayer structure.

11. The display device of claim 6, wherein the light converting layer comprises a quantum dot material, a color filter, a phosphor material, or a pigment material.

12. The display device of claim 1, further comprising:

a substrate;

a circuit disposed on the substrate; and

a plurality of light sources disposed on the substrate and electrically connected to the circuit,

wherein the display unit further comprises a portion of the substrate, a portion of the circuit, and one of the light sources.

13. The display device of claim 12, wherein the light source comprised in the display unit includes a color adjusting material, and the color adjusting material make the output spectrum of the output light have at least one peak at a wavelength ranging from 380 nm to 493 nm or from 576 nm to 780 nm.

14. The display device of claim 12, further comprising a light converting layer, wherein the light converting layer is disposed between the circuit and the light sources or disposed at a side of one of the light sources opposite to the circuit, the display unit further comprises a portion of the light converting layer, and the portion of the light converting layer comprised in the display unit make the output spectrum of the output light have at least one peak at a wavelength ranging from 380 nm to 493 nm or from 576 nm to 780 nm.

15. A display device, comprising:

a display unit emitting an output light having an output spectrum corresponding to a highest gray level of the display device,

wherein a maximum peak of the output spectrum between 494 nm and 575 nm is defined as a first intensity peak, a maximum peak of the output spectrum between 380 nm and 493 nm is defined as a second intensity peak, a ratio of the second intensity peak to the first intensity peak is defined as a fourth ratio, and the fourth ratio is greater than or equal to 1.0% and less than or equal to 15.0%.

16. The display device of claim 15, wherein a maximum peak of the output spectrum between 576 nm and 780 nm is defined as a third intensity peak, a ratio of the third intensity peak to the first intensity peak is defined as a fifth ratio, and the fifth ratio is greater than or equal to 1.0% and less than or equal to 15.0%.

17. The display device of claim 15, further comprising:

a first substrate;

a second substrate disposed opposite to the first substrate;

a light modulating layer disposed between the first substrate and the second substrate;

a backlight module disposed adjacent to the first substrate; and

a light converting layer,

wherein the light converting layer is disposed between the backlight module and the first substrate, disposed on a surface of the second substrate opposite to the light modulating layer, or between the second substrate and the light modulating layer, and the display unit includes a portion of the first substrate, a portion of the second substrate, a portion of the light modulating layer, a portion of the backlight module and a portion of the light converting layer.

18. The display device of claim 15, further comprising:

a substrate;

a circuit disposed on the substrate;

a plurality of light sources disposed on the substrate and electrically connected to the circuit; and

a light converting layer,

wherein the light converting layer is disposed between the circuit and the light sources or disposed at a side of one of the light sources opposite to the circuit, the display unit further comprises a portion of the light converting layer, and the portion of the light converting layer comprised in the display unit make the output spectrum of the output light have at least one peak at a wavelength ranging from 380 nm to 493 nm or from 576 nm to 780 nm.

19. The display device of claim 15, further comprising a light converting layer, wherein a portion of the light converting layer comprised in the display unit includes a color adjusting material, and the color adjusting material makes the output spectrum of the output light have at least one peak at a wavelength ranging from 380 nm to 493 nm or from 576 nm to 780 nm.

20. The display device of claim 19, wherein the portion of the light converting layer comprised in the display unit includes at least two light-converting parts, and the color adjusting material in one of the light-converting parts is different from the color adjusting material in another one of the light-converting parts.