IP Library › Granted Patent US 12,278,129
Granted Patent B2
US 12,278,129 · App. 17/190,615 · Granted Apr 15, 2025

Alignment fixture for a reactor system

Inventors: Surojit Ganguli (Tempe, AZ); Todd Robert Dunn (Cave Creek, AZ); Ankit Kimtee (Phoenix, AZ)
Assignee: ASM IP Holding B.V.
H01L21/68C23C16/45544C23C16/4583H01L21/67259H01L21/68735H01L21/67069
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Quick Facts
Patent No.
US 12,278,129
App. No.
17/190,615
Granted
Apr 15, 2025
Kind
B2
Abstract

An alignment fixture for a reactor system may comprise a fixture body comprising an inner perimeter at least partially defining a shape which comprises an inner space of the fixture body, wherein the inner space is configured to receive a susceptor of a reactor system; and/or a measuring protrusion coupled to the fixture body at a first position and protruding from the fixture body toward the inner space. The measuring protrusion may comprise an indicator between the fixture body and a measuring protrusion end of the measuring protrusion.

Claims (29)

1. A reactor system, comprising:

a susceptor comprising a top surface and a susceptor outer edge, wherein the top surface of the susceptor is configured to receive a substrate thereon;

a spacer plate comprising a plate interior space defined by a spacer plate inner wall, wherein the susceptor is disposed at least partially in the plate interior space, the spacer plate comprising a plate positioning component;

wherein the susceptor and the spacer plate are disposed relative to one another such that there is a gap between the susceptor outer edge and the spacer plate inner wall; and

an alignment fixture disposed on the spacer plate and at least partially within the gap between the susceptor outer edge and the spacer plate inner wall, the alignment fixture physically separate from the spacer plate, wherein the alignment fixture comprises:

a fixture body comprising an upper surface, a lower surface, and an inner perimeter, the inner perimeter at least partially defining a shape which comprises an inner space of the fixture body, wherein the susceptor is disposed at least partially within the inner space;

a measuring protrusion protruding from the fixture body at a first position toward the inner space, wherein the measuring protrusion comprises an indicator between the fixture body and a measuring protrusion end of the measuring protrusion, wherein the measuring protrusion is coupled to the upper surface of the fixture body and protrudes toward the inner space, wherein the top surface of the susceptor is disposed below the upper surface; and

a fixture positioning component that is recessed in the lower surface of the fixture body, the plate positioning component configured to be received within the fixture positioning component, wherein the measuring protrusion comprises a first plurality of graduation marks disposed between the fixture body and the measuring protrusion end of the measuring protrusion, wherein the first plurality of graduation marks comprises the indicator.

2. The reactor system of claim 1 , wherein the inner perimeter of the fixture body is spaced from the susceptor outer edge, such that the inner perimeter of the fixture body is not in contact with the susceptor outer edge.

3. The reactor system of claim 1 , wherein the measuring protrusion extends over the susceptor outer edge.

4. The reactor system of claim 1 , wherein the fixture body further comprises an outer perimeter opposite the inner perimeter, wherein the outer perimeter defines an outer shape of the fixture body, which is complementary to a shape of the plate interior space.

5. The reactor system of claim 1 , wherein the upper surface is disposed on an upper plane of the alignment fixture, wherein the susceptor is disposed below the upper plane.

6. The reactor system of claim 1 , wherein the alignment fixture further comprises a second measuring protrusion protruding from the fixture body at a second position toward the inner space, wherein the second measuring protrusion comprises a second indicator between the fixture body and a second measuring protrusion end of the second measuring protrusion.

7. The reactor system of claim 6 , wherein the measuring protrusion and the second measuring protrusion extend toward a center of the shape at least partially defined by the inner perimeter, and wherein the indicator is disposed on the measuring protrusion a first distance from the inner perimeter of the fixture body, and wherein the second indicator is disposed on the second measuring protrusion a second distance from the inner perimeter of the fixture body.

8. The reactor system of claim 7 , wherein the first distance and the second distance are the same.

9. The reactor system of claim 1 , further comprising a reaction chamber, in which the susceptor, the spacer plate and the alignment fixture are at least partially disposed.

10. The reactor system of claim 1 , wherein the alignment fixture further comprises a protrusion void disposed through a portion of the measuring protrusion.

11. An alignment fixture for a reactor system, comprising:

a fixture body comprising an upper surface, a lower surface, and an inner perimeter, the inner perimeter at least partially defining a shape which comprises an inner space of the fixture body, wherein the inner space is configured to receive a susceptor of the reactor system;

a first measuring protrusion coupled to the fixture body at a first position and protruding from the fixture body toward the inner space and across the inner perimeter of the fixture body, wherein the first measuring protrusion comprises an indicator between the inner perimeter of the fixture body and a measuring protrusion end of the first measuring protrusion, wherein the first measuring protrusion is coupled to the upper surface of the fixture body and protrudes toward the inner space, the upper surface disposed on an upper plane of the fixture body, and wherein a top surface of the susceptor is disposed below the upper plane in response to the inner space receiving the susceptor of the reactor system therein;

a second measuring protrusion disposed between 30 degrees and 160 degrees apart from the first measuring protrusion relative to a center of the shape, the second measuring protrusion protruding from the fixture body at a second position toward the inner space, wherein the second measuring protrusion comprises a second indicator between the fixture body and a second measuring protrusion end of the second measuring protrusion; and

a first fixture positioning component that is recessed in the lower surface of the fixture body, the first fixture positioning component configured to receive a plate positioning component therein, wherein the first measuring

protrusion comprises a first plurality of graduation marks disposed between the fixture body and the measuring

protrusion end of the first measuring protrusion, wherein the first plurality of graduation marks comprises the indicator.

12. The alignment fixture of claim 11 , wherein the fixture body further comprises an outer perimeter opposite the inner perimeter, wherein the outer perimeter defines an outer shape of the fixture body.

13. The alignment fixture of claim 11 , wherein the shape at least partially defined by the inner perimeter is complementary to a shape of the susceptor, which the inner space is configured to receive therein.

14. The alignment fixture of claim 11 , wherein the first measuring protrusion and the second measuring protrusion extend toward the center of the shape at least partially defined by the inner perimeter, and wherein the indicator is disposed on the first measuring protrusion a first distance from the inner perimeter of the fixture body, and wherein the second indicator is disposed on the second measuring protrusion a second distance from the inner perimeter of the fixture body.

15. The alignment fixture of claim 14 , wherein the first distance and the second distance are the same.

16. The alignment fixture of claim 11 , further comprising a second fixture positioning component that is recessed in the lower surface of the fixture body, the second fixture positioning component spaced apart circumferentially from the first fixture positioning component.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2021
From: GANGULI, SUROJIT; DUNN, TODD ROBERT; KIMTEE, ANKIT
To: ASM IP HOLDING B.V.
Reel/Frame 055935/0084 →
Continuity (2)
Provisional Application 62985184 · Mar 4, 2020
Related Publication 20210280448A1 · Sep 9, 2021
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