IP Library Granted Patent US 10,833,108
Granted Patent B2
US 10,833,108 · App. 16/860,027 · Granted Nov 10, 2020

3D microdisplay device and structure

Inventors: Zvi Or-Bach (San Jose, CA); Deepak C. Sekar (San Jose, CA)
Assignee: Monolithic 3D INC.
H01L27/14603H01L27/1218H01L27/15H01L27/281
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Quick Facts
Patent No.
US 10,833,108
App. No.
16/860,027
Granted
Nov 10, 2020
Kind
B2
Abstract

A 3D micro display, the 3D micro display including: a first single crystal layer including at least one LED driving circuit; a second single crystal layer including a first plurality of light emitting diodes (LEDs), where the second single crystal layer is on top of the first single crystal layer, where the second single crystal layer includes at least ten individual first LED pixels; and a second plurality of light emitting diodes (LEDs), where the 3D micro display includes an oxide to oxide bonding structure.

Claims (84)

1. 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 on top of said first single crystal layer,

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 3D micro display comprises an oxide to oxide bonding structure.

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

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

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

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

a top surface of said first single crystal layer; and

a bottom surface of said second single crystal layer,

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

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

a third single crystal layer,

wherein said third single crystal layer overlays said second single crystal layer.

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

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.

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

a third single crystal layer,

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

7. 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 on top of said first single crystal layer,

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

a second plurality of light emitting diodes (LEDs); and

a third single crystal layer,

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

wherein said LED driving circuit comprises n type devices and p type devices.

8. The 3D micro display according to claim 7 ,

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

9. The 3D micro display according to claim 7 ,

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

10. The 3D micro display according to claim 7 ,

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.

11. The 3D micro display according to claim 7 ,

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 7 ,

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

13. The 3D micro display according to claim 7 , further comprising:

a fourth single crystal layer,

wherein said fourth single crystal layer is on top of said third single crystal layer.

14. 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 on top of said first single crystal layer,

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, and

wherein said 3D micro display comprises an oxide to oxide bonding structure.

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

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

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

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

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.

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 and 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 on top of said second single crystal layer, and

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

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

a third single crystal layer,

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

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

a fourth single crystal layer,

wherein said fourth single crystal layer is on top of said third single crystal layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2020
From: OR-BACH, ZVI; SEKAR, DEEPAK
To: MONOLITHIC 3D INC.
Reel/Frame 052619/0206 →
Continuity (5)
Continuation In Part 15920499 · Mar 14, 2018
Continuation In Part 14936657 · Nov 9, 2015
Continuation In Part 13274161 · Oct 14, 2011
Continuation In Part 12904103 · Oct 13, 2010
Related Publication 20200259048A1 · Aug 13, 2020