Delivering particulate material to a vaporization zone
View Patent ↗It is an object of the present invention to provide an effective way of replenishing particulate material for vaporization. This object is achieved by a method for delivering material into a deposition chamber having a vaporization zone to vaporize such material to form a layer. The improvement includes providing a cartridge defining a cavity for receiving material under a controlled environment for preventing material contamination, receiving material from the cavity and translating such received material along a feed path to the vaporization zone and removably securing the cartridge to the deposition chamber.
1. A cartridge made ready for insertion in or removal from a deposition apparatus and for delivering particulate material into a deposition chamber having a vaporization zone to vaporize such material to form a layer, wherein said cartridge defines:
(a) a cartridge receiver;
(b) a sealed powder sub-assembly defining a cavity for receiving material under a controlled environment for preventing material contamination;
(c) means for delivering material from the cavity into an agitation chamber and means for continuously metering such agitated material along a sealable feed path to the vaporization zone;
(d) such that the sealed powder sub-assembly and the sealable feed path together form a supply and feed sub-assembly; and
(e)
(i) means for removably securing the cartridge to the deposition chamber, and
(ii) means for removably securing the supply and feed sub-assembly to the cartridge receiver, and
(iii) means for removably securing the sealed powder sub-assembly to the supply and feed sub-assembly.
2. The cartridge of claim 1 further including means for fluidizing material in the agitation chamber.
3. The cartridge of claim 2 wherein the means for fluidizing the material includes energizing a piezoelectric actuator or an agitating auger.
4. The cartridge of claim 1 wherein the cartridge includes a heating element for providing energy for vaporization.
5. The cartridge of claim 1 wherein the cavity is under vacuum.
6. The cartridge of claim 1 wherein the cavity is under pressure.
7. The cartridge of claim 1 wherein the particulate material in the feeding path includes at least a first material and a second material.
8. The cartridge of claim 1 further including means for sensing the quantity of particulate material in the sealed powder sub-assembly.
9. The cartridge of claim 1 wherein the controlled environment is a condition that the material received in the cavity is sealed in a vacuum or pressurized environment.
10. An apparatus for using heat at a vaporization zone in a deposition chamber for vaporizing particulate material to form a layer, comprising:
a cartridge made ready for insertion in or removal from the deposition apparatus including:
a cartridge receiver,
a sealed powder sub-assembly defining a cavity for receiving material under a controlled environment for preventing material contamination,
means for receiving material from the cavity into an agitation chamber and means for continuously metering such agitated material along a sealable feed path to the vaporization zone,
such that the sealed powder sub-assembly and the sealable feed path together form a supply and feed sub-assembly, and
(i) means for removably securing the cartridge to the deposition chamber, and
(ii) means for removably securing the supply and feed sub-assembly to the cartridge receiver, and
(iii) means for removably securing the sealed powder sub-assembly to the supply and feed sub-assembly.
11. The cartridge of claim 10 further includes means for fluidizing material in the agitation chamber.
12. The apparatus of claim 11 wherein the means for fluidizing the material includes energizing a piezoelectric actuator or an agitating auger.
13. The cartridge of claim 10 wherein the cartridge or the deposition chamber includes a heating element for providing energy for vaporization.
14. The apparatus of claim 10 wherein the cavity is under vacuum.
15. The apparatus of claim 10 wherein the cavity is under pressure.
16. The apparatus of claim 10 wherein the particulate material in the feeding path includes at least a first material and a second material.
17. The cartridge of claim 10 further includes means for sensing the quantity of particulate material in the sealed powder sub-assembly.
18. The cartridge of claim 10 wherein the controlled environment is a condition that the material received in the cavity can be sealed in a vacuum or pressurized environment.