Multi-chambered chemical solid precursor ampoule
AssigneeVersum Materials US, LLC
InventorsCharles M. Birtcher, Robert Eschbach
Life of this patent
Estimating the term…
Abstract
A multi-chamber ampoule having a multi-chamber container and a lid is disclosed. The lid includes conduits for fluidly connecting multiple chambers of the container. The sublimation rate of each chamber is defined by a surface area of each chamber, a temperature of each chamber, and a headspace pressure of each chamber, and the sublimation rate of each chamber is substantially equal.
Claims53
A sublimation ampoule comprising:
- a sublimation container having an open end and a closed end, a sidewall and at least two chambers extending between the open end and the closed end, each chamber is separated by a container wall, each chamber having a surface area and a sublimation rate;
- and,
- a container lid having a top surface and a bottom surface defining a thickness, the bottom surface removably securable to the open end of the sublimation container forming a fluid seal, the container lid comprising:
- a lid inlet positioned on the top surface of the container lid, the lid inlet extending through the thickness;
- a lid outlet positioned on the top surface of the container lid the lid outlet extending through the thickness;
- at least one chamber inlet positioned on the bottom surface of the container lid fluidly connected to the lid inlet, each chamber inlet fluidly connected to a chamber of the at least two chambers, each chamber inlet having a cross-sectional area;
- and,
- a conduit having a conduit inlet and a conduit outlet positioned on the bottom surface, the conduit inlet and conduit outlet extending partially into the thickness, the conduit fluidly connecting to two chambers of the at least two chambers, the conduit having cross-sectional area.
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A sublimation ampoule comprising:
- a sublimation container having an open end and a closed end, a sidewall, and a central longitudinal axis, the sublimation container comprising:
- an interior wall extending across the sidewall of the sublimation container;
- a radial wall radial wall concentric with the central longitudinal;
- a first chamber and a second chamber separated by the interior wall;
- and,
- a third chamber and a fourth chamber and are separated from the first chamber and second chamber by the radial wall, and adjacent to the sidewall of the sublimation container;
- and,
- a container lid having a top surface and a bottom surface defining a thickness, the bottom surface removably securable to the open end of the sublimation container forming a fluid seal, the container lid comprising:
- a lid inlet positioned on the top surface of the container lid having a fixed inlet flow rate, the lid inlet extending through the thickness;
- at least one chamber inlet positioned on the bottom surface of the container lid fluidly connected to the lid inlet, the chamber inlet in fluid communication with the first chamber;
- the chamber inlet having a cross-sectional area;
- a lid outlet positioned on the top surface of the container lid having a fixed outlet pressure, the lid outlet extending through the thickness and in fluid communication with the fourth chamber;
- and,
- a plurality of conduits having a conduit inlet and a conduit outlet positioned on the bottom surface, the conduit inlet and conduit outlet extending partially into the thickness, the conduit fluidly connecting the first chamber, the second chamber, the third chamber and the fourth chamber, each of the plurality of conduits having cross-sectional area.
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Dependencies are inferred from the claim text.