IP Library › Granted Patent US 11,018,156
Granted Patent B2
US 11,018,156 · App. 17/099,706 · Granted May 25, 2021

3D memory semiconductor devices and structures

Inventors: Zvi Or-Bach (Haifa, IL); Jin-Woo Han (San Jose, CA); Eli Lusky (Ramat-Gan, IL)
Assignee: MONOLITHIC 3D INC.
H01L27/11582G11C7/18H01L27/1157H01L27/11565H01L29/42348
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Quick Facts
Patent No.
US 11,018,156
App. No.
17/099,706
Granted
May 25, 2021
Kind
B2
Abstract

A 3D memory device, the device including: a plurality of memory cells, where each of the plurality of memory cells includes at least one memory transistor, where each of the at least one memory transistor includes a source and a drain; a plurality of bit-line pillars, where each of the plurality of bit-line pillars is directly connected to a plurality of the source or the drain, where each of the plurality of bit-line pillars includes metal atoms such that the plurality of bit-line pillars have at least partial metallic properties; and a thermal path from the bit-line pillars to an external surface of the device to remove heat. Various 3D processing flows and methods are also disclosed.

Claims (62)

1. A 3D memory device, the device comprising:

a plurality of memory cells,

wherein each of said plurality of memory cells comprises at least one memory transistor,

wherein each of said at least one memory transistor comprises a source and a drain;

a plurality of bit-line pillars,

wherein each of said plurality of bit-line pillars is directly connected to a plurality of said source or said drain,

wherein each of said plurality of bit-line pillars comprises metal atoms such that said plurality of bit-line pillars have at least partial metallic properties; and

a thermal path from said bit-line pillars to an external surface of said device to remove heat.

2. The device according to claim 1 ,

wherein each of said plurality of memory cells comprises a charge trap memory and a poly-silicon channel, and

wherein said metal atoms enable hot electron programming of said charge trap memory.

3. The device according to claim 1 ,

wherein said 3D memory comprises a NOR or an AND memory architecture.

4. The device according to claim 1 ,

wherein said plurality of memory cells comprise a metalized source or drain.

5. The device according to claim 1 ,

wherein said plurality of memory cells comprise a tunneling oxide thinner than 1 nm.

6. The device according to claim 1 ,

wherein each of said at least one memory transistor comprises a channel,

wherein said channel comprises crystallized polysilicon, and

wherein said crystallized polysilicon has been crystallized from a heat sourced from said source or drain of said channel.

7. The device according to claim 1 ,

wherein at least one of said memory transistor is self-aligned to an overlaying memory transistor.

8. A 3D memory device, the device comprising:

a plurality of memory cells,

wherein each of said plurality of memory cells comprises at least one memory transistor,

wherein each of said at least one memory transistor comprises a source and a drain;

a plurality of bit-line pillars,

wherein each of said bit-line pillars is directly connected to a plurality of said source or said drain; and

a thermal path from said bit-line pillars to an external surface of said device to remove heat.

9. The device according to claim 8 ,

wherein each of said plurality of bit-line pillars comprise metal atoms such that said plurality of bit-line pillars have at least partial metallic properties.

10. The device according to claim 8 ,

wherein said 3D memory comprises a NOR or an AND memory architecture.

11. The device according to claim 8 ,

wherein said plurality of memory cells comprise a metalized source or drain.

12. The device according to claim 8 ,

wherein said plurality of memory cells comprise a tunneling oxide thinner than 1 nm.

13. The device according to claim 8 ,

wherein each of said at least one memory transistor comprises a channel,

wherein said channel comprises crystallized polysilicon, and

wherein said crystallized polysilicon has been crystallized from a heat sourced from said source or drain of said channel.

14. The device according to claim 8 ,

wherein at least one of said memory transistor is self-aligned to an overlaying memory transistor.

15. A 3D memory device, the device comprising:

a plurality of memory cells,

wherein each of said plurality of memory cells comprises at least one memory transistor,

wherein each of said at least one memory transistor comprises a source, a channel and a drain; and

a plurality of bit-line pillars,

wherein each of said bit-line pillars is directly connected to a plurality of said sources or drains,

wherein said channel comprises crystallized polysilicon, and

wherein said crystallized polysilicon has been crystallized from a heat sourced from said source or drain of said channel.

16. The device according to claim 15 ,

wherein each of said bit-line pillars comprise metal atoms such that said bit-line pillars have at least partial metallic properties.

17. The device according to claim 15 ,

wherein said 3D memory comprises a NOR or an AND memory architecture.

18. The device according to claim 15 ,

wherein said plurality of memory cells comprise a metalized source or drain.

19. The device according to claim 15 ,

wherein said plurality of memory cells comprise a tunneling oxide thinner than 1 nm.

20. The device according to claim 15 ,

wherein at least one of said memory transistor is self-aligned to an overlaying memory transistor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2020
From: OR-BACH, ZVI; HAN, JIN-WOO; LUSKY, ELI
To: MONOLITHIC 3D INC.
Reel/Frame 054438/0696 →
Continuity (6)
Continuation In Part 16836659 · Mar 31, 2020
Provisional Application 62952222 · Dec 21, 2019
Provisional Application 62897364 · Sep 8, 2019
Provisional Application 62856732 · Jun 3, 2019
Provisional Application 62831080 · Apr 8, 2019
Related Publication 20210098490A1 · Apr 1, 2021