IP Library Granted Patent US 10,361,172
Granted Patent B2
US 10,361,172 · App. 16/169,227 · Granted Jul 23, 2019

Apparatus and method for multi-die interconnection

Inventors: Jean-Philippe Fricker (Los Altos, CA); Philip Ferolito (Los Altos, CA)
Assignee: Cerebras Systems Inc.
H01L25/0655H01L21/4889H01L23/5386H01L23/562H01L23/564H01L24/43H01L24/48H01L24/94H01L2224/48137
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Quick Facts
Patent No.
US 10,361,172
App. No.
16/169,227
Granted
Jul 23, 2019
Kind
B2
Abstract

A semiconductor and a method of fabricating the semiconductor having multiple, interconnected die including: providing a semiconductor substrate having a plurality of disparate die formed within the semiconductor substrate, and a plurality of scribe lines formed between pairs of adjacent die of the plurality of disparate die; and fabricating, by a lithography system, a plurality of inter-die connections that extend between adjacent pair of die of the plurality of die.

Claims (62)

1. A semiconductor having multiple, interconnected die, the semiconductor comprising:

a substrate comprising a semiconductor wafer;

a plurality of die formed with the substrate;

a circuit layer formed at each of the plurality of die;

a plurality of inter-die connections that communicatively connect disparate die formed with the substrate, wherein each of the plurality of inter-die connections extends between each pair of adjacent die of the plurality of die,

wherein each of the plurality of inter-die connections comprises a conductive material that is the same as the conductive material forming intra-die connections on the circuit layer of each die; and

a plurality of peripheral connections distinct from the plurality of inter-die connections is formed along at least one side of a subset of the plurality of die positioned along an outer periphery of the substrate.

2. The semiconductor according to claim 1 , wherein:

the semiconductor wafer comprises a singular, integrally continuous form, and

the plurality of die is formed integrally and continuously with the singular, integrally continuous form of the semiconductor wafer.

3. The semiconductor according to claim 1 , further comprising:

a plurality of scribe lines, wherein each scribe line of the plurality of scribe lines is positioned at the substrate between each pair of adjacent die of the plurality of die,

wherein each of the plurality of inter-die connections extends over one scribe line of the plurality of scribe lines positioned between each pair of adjacent die of the plurality of die.

4. The semiconductor according to claim 1 , wherein:

each of the plurality of die comprises a protective barrier comprising a seal ring that encompasses a periphery of each of the plurality of die.

5. The semiconductor according to claim 4 , wherein:

the seal ring extends between the circuit layer of each of the plurality of die and intersecting edges of side faces and a top surface of each of the plurality of die.

6. The semiconductor according to claim 1 , wherein:

each end of each of the plurality of inter-die connections extends to a position on the circuit layer of each pair of adjacent die of the plurality of die, and

each of the plurality of inter-die connections operably connects circuit layers of each pair of adjacent die.

7. The semiconductor according to claim 1 , wherein:

each of the plurality of inter-die connections comprises a conductive material that enables a transmission of signals thereon between circuit layers of adjacent die of the plurality of die.

8. The semiconductor according to claim 1 , wherein:

the plurality of die includes:

(i) a first subset of interior die defining an interior of the semiconductor substrate, wherein the first subset of interior die has inter-die connections with adjacent die along all sides of the first subset of die;

(ii) a second subset of peripheral die defining a periphery of the semiconductor substrate, wherein at least one side of each of the second subset of peripheral die are formed without inter-die connections.

9. The semiconductor according to claim 1 , wherein:

the plurality of die is integrally formed with and maintained integrally with the substrate without dicing each of the plurality of die from each other.

10. A semiconductor having multiple, interconnected die, the semiconductor comprising:

a semiconductor substrate comprising a semiconductor wafer;

a plurality of die formed with the substrate, wherein the plurality of die includes:

(i) a first subset of interior die defining an interior of the semiconductor substrate, wherein the first subset of interior has have inter-die connections with adjacent die along all sides of the first subset of die;

(ii) a second subset of peripheral die defining a periphery of the semiconductor substrate, wherein at least one side of each of the second subset of peripheral die are formed without inter-die connections;

a circuit layer formed at each of the plurality of die;

a plurality of inter-die connections that communicatively connect disparate die formed with the substrate, wherein each of the plurality of inter-die connections extends between each pair of adjacent die of the plurality of die.

11. The semiconductor according to claim 10 , wherein:

each of the plurality of inter-die connections comprises a conductive material that is the same as the conductive material forming intra-die connections on the circuit layer of each die.

12. The semiconductor according to claim 10 , wherein:

the plurality of die is integrally formed with and maintained integrally with the substrate without dicing each of the plurality of die from each other.

13. The semiconductor according to claim 10 , wherein:

the semiconductor wafer comprises a singular, integrally continuous form, and

the plurality of die is formed integrally and continuously with the singular, integrally continuous form of the semiconductor wafer.

14. The semiconductor according to claim 10 , further comprising:

a plurality of scribe lines, wherein each scribe line of the plurality of scribe lines is positioned at the substrate between each pair of adjacent die of the plurality of die,

wherein each of the plurality of inter-die connections extends over one scribe line of the plurality of scribe lines positioned between each pair of adjacent die of the plurality of die.

15. The semiconductor according to claim 10 , wherein:

each of the plurality of die comprises a protective barrier comprising a seal ring that encompasses a periphery of each of the plurality of die.

16. The semiconductor according to claim 10 , wherein:

each of the plurality of die comprises a protective barrier comprising a seal ring that extends between the circuit layer of each of the plurality of die and intersecting edges of side faces and a top surface of each of the plurality of die.

17. The semiconductor according to claim 10 , wherein:

each end of each of the plurality of inter-die connections extends to a position on the circuit layer of each pair of adjacent die of the plurality of die, and

each of the plurality of inter-die connections operably connects circuit layers of each pair of adjacent die.

18. The semiconductor according to claim 10 , further comprising:

a plurality of peripheral connections distinct from the plurality of inter-die connections is formed along at least one side of a subset of the plurality of die positioned along an outer periphery of the semiconductor wafer.

19. A semiconductor having multiple, interconnected die, the semiconductor comprising:

a substrate comprising a semiconductor wafer;

a plurality of die formed with the substrate;

a circuit layer formed at each of the plurality of die;

a plurality of inter-die connections that communicatively connect disparate die formed with the substrate, wherein each of the plurality of inter-die connections extends between each pair of adjacent die of the plurality of die, wherein:

each end of each of the plurality of inter-die connections extends to a position on the circuit layer of each pair of adjacent die of the plurality of die, and

each of the plurality of inter-die connections operably connects the circuit layers of each pair of adjacent die; and

a plurality of peripheral connections distinct from the plurality of inter-die connections is formed along at least one side of a subset of the plurality of die positioned along an outer periphery of the substrate.

Assignments (2)
SECURITY INTEREST Recorded Jun 18, 2026
From: CEREBRAS SYSTEMS INC.
To: MORGAN STANLEY SENIOR FUNDING, INC., AS THE COLLATERAL AGENT
Reel/Frame 075845/0844 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2018
From: FRICKER, JEAN-PHILIPPE; FEROLITO, PHILIP
To: CEREBRAS SYSTEMS INC.
Reel/Frame 047531/0893 →
Continuity (3)
Continuation 16019882 · Jun 27, 2018
Provisional Application 62536063 · Jul 24, 2017
Related Publication 20190057953A1 · Feb 21, 2019