Light emitting device, display, and electronic apparatus

1. A light emitting device comprising:

a first light source configured to perform an operation of blinking first emission light including first blue light and first red light; and

a second light source configured to perform an operation of blinking second emission light independently of the operation of blinking the first emission light by the first light source, the second emission light including second red light and green light,

wherein the first light source and the second light source are configured to be concurrently turned on, and the second light source is turned off after the first light source is turned off.

2. The light emitting device according to claim 1 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a second blue light emitting element and a second phosphor layer, the second blue light emitting element emitting second blue light, the second phosphor layer including a second red phosphor and a green phosphor, the second red phosphor being excited by the second blue light to emit the second red light, the green phosphor being excited by the second blue light to emit the green light.

3. The light emitting device according to claim 1 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a green light emitting element and a second phosphor layer, the green light emitting element emitting the green light, the second phosphor layer including a second red phosphor that is excited by the green light to emit the second red light.

4. The light emitting device according to claim 1 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a second blue light emitting element, a green light emitting element, and a second phosphor layer, the second blue light emitting element emitting second blue light, the green light emitting element emitting the green light, the second phosphor layer including a second red phosphor that is excited by both the second blue light and the green light to emit the second red light.

5. The light emitting device according to claim 1 , wherein a half width of a maximum peak of the first red light is narrower than a half width of a maximum peak of the second red light.

6. The light emitting device according to claim 1 , wherein

intensity distribution of the first red light with respect to a wavelength exhibits an emission line spectrum, and

intensity distribution of the second red light with respect to a wavelength exhibits a continuous spectrum.

7. The light emitting device according to claim 2 , wherein the first red phosphor includes an KSF phosphor (K 2 SiF 6 : Mn 4+ ) or a quantum dot.

8. The light emitting device according to claim 2 , wherein

the second red phosphor includes a nitride phosphor including respective elements of Ca (calcium), Al (aluminum), Si (silicon), and N (nitrogen), and

the green phosphor includes an oxynitride phosphor or a YAG phosphor (Y 3 (Al, Ga) 5 O 12 : Ce 3+ ), the oxynitride phosphor including respective elements of Si (silicon), Al (aluminum), O (oxygen), and N (nitrogen).

9. The light emitting device according to claim 1 , wherein the second light source further includes a blue light component cut filter that prevents a blue light component from passing through the blue light component cut filter.

10. A display comprising:

a light emitting device; and

a display panel that displays an image by using light from the light emitting device, wherein

the light emitting device includes

a first light source configured to perform an operation of blinking first emission light including first blue light and first red light, and

a second light source configured to perform an operation of blinking second emission light independently of the operation of blinking the first emission light by the first light source, the second emission light including second red light and green light,

wherein the first light source and the second light source are configured to be concurrently turned on, and the second light source is turned off after the first light source is turned off.

11. The display according to claim 10 , further comprising a controller that synchronizes a lighting switch operation and a display switch operation, the lighting switch operation being for switching an operation of turning on the first light source and an operation of turning on the second light source, the display switch operation being for switching an operation of displaying a first image corresponding to the first emission light and an operation of displaying a second image corresponding to the second emission light.

12. An electronic apparatus comprising

a display including a light emitting device and a display panel that displays an image by using light from the light emitting device, wherein

the light emitting device includes

a first light source configured to perform an operation of blinking first emission light including first blue light and first red light, and

a second light source configured to perform an operation of blinking second emission light independently of the operation of blinking the first emission light by the first light source, the second emission light including second red light and green light,

wherein the first light source and the second light source are configured to be concurrently turned on, and the second light source is turned off after the first light source is turned off.

13. The display according to claim 10 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a second blue light emitting element and a second phosphor layer, the second blue light emitting element emitting second blue light, the second phosphor layer including a second red phosphor and a green phosphor, the second red phosphor being excited by the second blue light to emit the second red light, the green phosphor being excited by the second blue light to emit the green light.

14. The display according to claim 10 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a green light emitting element and a second phosphor layer, the green light emitting element emitting the green light, the second phosphor layer including a second red phosphor that is excited by the green light to emit the second red light.

15. The display according to claim 10 , wherein

the first light source includes a first blue light emitting element and a first phosphor layer, the first blue light emitting element emitting the first blue light, the first phosphor layer including a first red phosphor that is excited by the first blue light to emit the first red light, and

the second light source includes a second blue light emitting element, a green light emitting element, and a second phosphor layer, the second blue light emitting element emitting second blue light, the green light emitting element emitting the green light, the second phosphor layer including a second red phosphor that is excited by both the second blue light and the green light to emit the second red light.

16. The display according to claim 10 , wherein a half width of a maximum peak of the first red light is narrower than a half width of a maximum peak of the second red light.

17. The display according to claim 10 , wherein

intensity distribution of the first red light with respect to a wavelength exhibits an emission line spectrum, and

intensity distribution of the second red light with respect to a wavelength exhibits a continuous spectrum.

18. The display according to claim 13 , wherein the first red phosphor includes an KSF phosphor (K 2 SiF 6 : Mn 4+ ) or a quantum dot.

19. The display according to claim 13 , wherein

the second red phosphor includes a nitride phosphor including respective elements of Ca (calcium), Al (aluminum), Si (silicon), and N(nitrogen), and

the green phosphor includes an oxynitride phosphor or a YAG phosphor (Y 3 (Al, Ga) 5 O 12 : Ce 3+ ), the oxynitride phosphor including respective elements of Si (silicon), Al (aluminum), O (oxygen), and N (nitrogen).

20. The display according to claim 10 , wherein the second light source further includes a blue light component cut filter that prevents a blue light component from passing through the blue light component cut filter.