Granted Patent B2

US 11,315,965 · App. 17/487,369 · Granted Apr 26, 2022

Inventors: Zvi Or-Bach (Haifa, IL); Deepak C. Sekar (Sunnyvale, CA)

Assignee: Monolithic 3D Inc.

H01L27/14603H01L25/0756H01L27/156H01L33/16H01L33/62

Abstract

Claims (98)

1. A 3D micro display, the 3D micro display comprising:

a first single crystal layer comprising a first plurality of light emitting diodes (LEDs);

a second single crystal layer comprising a second plurality of light emitting diodes (LEDs),

wherein said first single crystal layer comprises at least ten individual first LED pixels,

wherein said second single crystal layer comprises at least ten individual second LED pixels,

wherein said first plurality of light emitting diodes (LEDs) emits a first light with a first wavelength,

wherein said second plurality of light emitting diodes (LEDs) emits a second light with a second wavelength,

wherein said first wavelength and said second wavelength differ by greater than 10 nm; and

a third single crystal layer comprising at least one LED driving circuit.

2. The 3D micro display according to claim 1 ,

wherein a plurality of said first LED pixels are individually driven, each of said plurality of said first LED pixels is driven by a unique said LED driving circuit, and

wherein said third single crystal layer and said second single crystal layer are separated by a vertical distance of less than ten microns and greater than 0.1 microns.

3. The 3D micro display according to claim 1 , further comprising:

an oxide to oxide bonding structure.

4. The 3D micro display according to claim 1 ,

wherein said second single crystal layer is disposed on top of said first single crystal layer.

5. The 3D micro display according to claim 1 ,

wherein said third single crystal layer comprises at least ten third LED pixels.

6. A 3D micro display, the 3D micro display comprising:

a first single crystal layer comprising a first plurality of light emitting diodes (LEDs);

a second single crystal layer comprising a second plurality of light emitting diodes (LEDs),

wherein said first single crystal layer comprises at least ten individual first LED pixels,

wherein said second single crystal layer comprises at least ten individual second LED pixels,

wherein said first plurality of light emitting diodes (LEDs) emits a first light with a first wavelength,

wherein said second plurality of light emitting diodes (LEDs) emits a second light with a second wavelength, and

wherein said first wavelength and said second wavelength differ by greater than 10 nm;

a third single crystal layer comprising at least one LED driving circuit;

a top surface of said first single crystal layer; and

a bottom surface of said second single crystal layer,

wherein said second single crystal layer and said first single crystal layer are separated by a vertical distance of less than ten microns and greater than 0.1 microns, and

wherein said vertical distance is a distance from said top surface of said first single crystal layer to said bottom surface of said second single crystal layer.

7. A 3D micro display, the 3D micro display comprising:

a first single crystal layer comprising a first plurality of light emitting diodes (LEDs);

a second single crystal layer comprising a second plurality of light emitting diodes (LEDs),

wherein said first single crystal layer comprises at least ten individual first LED pixels,

wherein said second single crystal layer comprises at least ten individual second LED pixels,

wherein said first plurality of light emitting diodes (LEDs) emits a first light with a first wavelength,

wherein said second plurality of light emitting diodes (LEDs) emits a second light with a second wavelength, and

wherein said first wavelength and said second wavelength differ by greater than 10 nm;

a third single crystal layer comprising at least one LED driving circuit,

wherein said third single crystal layer and said first single crystal layer are separated by a vertical distance of less than twenty microns and greater than 0.1 microns.

8. A 3D micro display, the 3D micro display comprising:

a first single crystal layer comprising at least one LED driving circuit;

a second single crystal layer comprising a first plurality of light emitting diodes (LEDs),

wherein said second single crystal layer is disposed on top of said first single crystal layer,

wherein said second single crystal layer comprises at least ten individual first LED pixels,

wherein said 3D micro display comprises a bonding structure, and

wherein said bonding structure comprises oxide to oxide bonding.

9. The 3D micro display according to claim 8 ,

wherein a plurality of said first LED pixels are individually driven, and

wherein each of said plurality of said first LED pixels is driven by a unique said at least one LED driving circuit.

10. The 3D micro display according to claim 8 , further comprising:

a top surface of said first single crystal layer; and

a bottom surface of said second single crystal layer,

wherein a vertical distance is a distance from said top surface of said first single crystal layer to said bottom surface of said second single crystal layer, and

wherein said vertical distance is less than ten microns and greater than 0.1 microns.

11. The 3D micro display according to claim 8 ,

wherein said first plurality of light emitting diodes (LEDs) emits a first light with a first wavelength,

wherein said second plurality of light emitting diodes (LEDs) emits a second light with a second wavelength, and

wherein said first wavelength and said second wavelength differ by greater than 10 nm.

12. The 3D micro display according to claim 8 , further comprising:

a third single crystal layer,

wherein said third single crystal layer is disposed on top of said second single crystal layer, and

wherein said third single crystal layer comprises at least ten individual third LED pixels.

13. The 3D micro display according to claim 8 , further comprising:

a third single crystal layer,

wherein said third single crystal layer is disposed on top of said second single crystal layer, and

wherein each of said at least one LED driving circuit comprises n type devices and p type devices.

14. A 3D micro display, the 3D micro display comprising:

a first single crystal layer comprising a plurality of LED driving circuits;

a second single crystal layer comprising a first plurality of light emitting diodes (LEDs),

wherein said second single crystal layer comprises at least ten individual first LED pixels; and

a second plurality of light emitting diodes (LEDs),

wherein said first plurality of light emitting diodes (LEDs) emits a first light with a first wavelength,

wherein said second plurality of light emitting diodes (LEDs) emits a second light with a second wavelength,

wherein said first wavelength and said second wavelength differ by greater than 10 nm,

wherein said plurality of LED driving circuit comprise individual control of each of said first plurality of light emitting diodes (LEDs), and

wherein said 3D micro display comprises a bonding structure.

15. The 3D micro display according to claim 14 ,

wherein a plurality of said first LED pixels are individually driven, and

wherein each of said plurality of said first LED pixels is driven by a unique said LED driving circuit.

16. The 3D micro display according to claim 14 ,

wherein said bonding structure comprises oxide to oxide bonding.

17. The 3D micro display according to claim 14 , further comprising:

a top surface of said first single crystal layer; and

a bottom surface of said second single crystal layer,

wherein a vertical distance is a distance from said top surface of said first single crystal layer to said bottom surface of said second single crystal layer, and

wherein said vertical distance is less than ten microns and greater than 0.1 microns.

18. The 3D micro display according to claim 14 , further comprising:

a third plurality of light emitting diodes (LEDs),

wherein said third plurality of light emitting diodes (LED) emits a third light with a third wavelength, and

wherein said first wavelength, said second wavelength and said third wavelength differ by greater than 10 nm from each other.

19. The 3D micro display according to claim 14 , further comprising:

a third single crystal layer,

wherein said third single crystal layer is disposed on top of said second single crystal layer, and

wherein said third single crystal layer comprises at least ten third LED pixels.

20. The 3D micro display according to claim 14 ,

wherein said second single crystal layer is disposed on top of said first single crystal layer.

Assignments (1)

Continuity (9)

Cited By (1)

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