摘要:
Embodiments of the invention provide apparatuses for atomic layer deposition (ALD), such as plasma-enhanced ALD (PE-ALD). In one embodiment, an inlet manifold assembly is provided which includes an annular channel encompassing a centralized channel, wherein the centralized channel extends through the inlet manifold assembly and injection holes extending from the annular channel, through a sidewall of the centralized channel, and to the centralized channel. The injection holes have a first plurality of injection holes extending towards or substantially towards a central axis of the centralized channel and the injection holes have a second plurality of injection holes extending tangential or substantially tangential towards the sidewall of the centralized channel.
摘要:
A high pressure, high throughput, single wafer, semiconductor processing reactor (10) is disclosed which is capable of thermal CVD, plasma-enhanced CVD, plasma-assisted etchback, plasma self-cleaning, and deposition topography modification by sputtering, either separately or as part of in-situ multiple step processing. The reactor includes cooperating arrays of interdigitated susceptor (16) and wafer fingers (20) which collectively remove the wafer (15) from a robot transfer blade (24) and position the wafer with variable, controlled, close parallel spacing between the wafer and the chamber gas inlet manifold (26) then return the wafer to the blade. A combined RF/gas feed-through device (36) protects against process gas leaks and applies RF energy to the gas inlet manifold without internal breakdown or deposition of the gas. The gas inlet manifold (26) is adapted for providing uniform gas flow over the wafer. Temperature-controlled internal and external manifold surfaces suppress condensation, premature reactions and decomposition and deposition on the external surfaces. The reactor also incorporates a uniform radial pumping gas system which enables uniform reactant gas flow across the wafer and directs purge gas flow downwardly and upwardly toward the periphery of the wafer for sweeping exhaust fases radially away from the wafer to prevent deposition outside the wafer and keep the chamber clean. The reactor provides uniform processing over a wide range of pressure including very high pressures. A low temperature CVD process for forming a highly conformal layer of silicon dioxide is also disclosed. The process uses very high chamber pressure and low temperature, and TEOS and ozone reactants. The low temperature CVD silicon dioxide deposition step is particularly useful for planarizing underlying stepped dielectric layers, either alone on in conjunction with a subsequent isotropic etch. A preferred in-situ multiple-step process for forming a planarized silicon dioxide layer uses (1) high rate silicon dioxide deposition at a low temperature and high pressure followed by (2) the deposition of the conformal silicon dioxide layer also at high pressure and low temperature, followed by (3) a high rate isotropic etch, preferably at low temperature and high pressure in the same reactor used for the two oxide deposition steps. Various combinations of the steps are disclosed for different applications, as is a preferred reactor self-cleaning step.
摘要:
Embodiments of the invention provide apparatuses for atomic layer deposition (ALD), such as plasma-enhanced ALD (PE-ALD). In one embodiment, an inlet manifold assembly is provided which includes an annular channel encompassing a centralized channel, wherein the centralized channel extends through the inlet manifold assembly and injection holes extending from the annular channel, through a sidewall of the centralized channel, and to the centralized channel. The injection holes have a first plurality of injection holes extending towards or substantially towards a central axis of the centralized channel and the injection holes have a second plurality of injection holes extending tangential or substantially tangential towards the sidewall of the centralized channel.
摘要:
A one-piece gas distribution faceplate (1502) for a showerhead. The one-piece gas distribution faceplate (1502) includes a first surface (1504), a second surface (1506), and a third surface. The one-piece gas distribution faceplate comprises a plurality of first gas holes (1510) extending through the one-piece gas distribution faceplate between the first surface (1504) and the second surface (1506). The one-piece gas distribution faceplate (1502) has an internal gas distribution cavity (1509) defined by a plurality of interconnecting channels (1512B). A plurality of second gas holes (1520) extend through the one-piece gas distribution faceplate between the first surface (1504) into a plurality of the interconnecting channels (1512B). The interconnecting channels are fluidly coupled to a plenum (1606) that is in turn connected to at least one gas conduit (1630). The gas conduit extends to the third surface.
摘要:
A lid assembly for distributing gases in a semiconductor process chamber (202). In one embodiment, a lid assembly (210) comprising a perforated center portion (218), a mounting portion (1202) circumscribing the perforated center portion and a plurality of bosses (1210) extending from the mounting portion each having a hole (1306) disposed therethrough is provided. Another embodiment of the invention provides a showerhead (218) that includes a mounting portion having a first side (1206) circumscribing a perforated center portion. A ring extends from the first side of the mounting portion. A plurality of mounting holes are disposed in the mounting portion radially to either side of the ring. The showerhead provides controlled thermal transfer between the showerhead and chamber lid resulting in less deposition on the showerhead.
摘要:
A one-piece gas distribution faceplate (1502) for a showerhead. The one-piece gas distribution faceplate (1502) includes a first surface (1504), a second surface (1506), and a third surface. The one-piece gas distribution faceplate comprises a plurality of first gas holes (1510) extending through the one-piece gas distribution faceplate between the first surface (1504) and the second surface (1506). The one-piece gas distribution faceplate (1502) has an internal gas distribution cavity (1509) defined by a plurality of interconnecting channels (1512B). A plurality of second gas holes (1520) extend through the one-piece gas distribution faceplate between the first surface (1504) into a plurality of the interconnecting channels (1512B). The interconnecting channels are fluidly coupled to a plenum (1606) that is in turn connected to at least one gas conduit (1630). The gas conduit extends to the third surface.
摘要:
A high pressure, high throughput, single wafer, semiconductor processing reactor (10) is disclosed which is capable of thermal CVD, plasma-enhanced CVD, plasma-assisted etchback, plasma self-cleaning, and deposition topography modification by sputtering, either separately or as part of in-situ multiple step processing. The reactor includes cooperating arrays of interdigitated susceptor (16) and wafer fingers (20) which collectively remove the wafer (15) from a robot transfer blade (24) and position the wafer with variable, controlled, close parallel spacing between the wafer and the chamber gas inlet manifold (26) then return the wafer to the blade. A combined RF/gas feed-through device (36) protects against process gas leaks and applies RF energy to the gas inlet manifold without internal breakdown or deposition of the gas. The gas inlet manifold (26) is adapted for providing uniform gas flow over the wafer. Temperature-controlled internal and external manifold surfaces suppress condensation, premature reactions and decomposition and deposition on the external surfaces. The reactor also incorporates a uniform radial pumping gas system which enables uniform reactant gas flow across the wafer and directs purge gas flow downwardly and upwardly toward the periphery of the wafer for sweeping exhaust fases radially away from the wafer to prevent deposition outside the wafer and keep the chamber clean. The reactor provides uniform processing over a wide range of pressure including very high pressures. A low temperature CVD process for forming a highly conformal layer of silicon dioxide is also disclosed. The process uses very high chamber pressure and low temperature, and TEOS and ozone reactants. The low temperature CVD silicon dioxide deposition step is particularly useful for planarizing underlying stepped dielectric layers, either alone on in conjunction with a subsequent isotropic etch. A preferred in-situ multiple-step process for forming a planarized silicon dioxide layer uses (1) high rate silicon dioxide deposition at a low temperature and high pressure followed by (2) the deposition of the conformal silicon dioxide layer also at high pressure and low temperature, followed by (3) a high rate isotropic etch, preferably at low temperature and high pressure in the same reactor used for the two oxide deposition steps. Various combinations of the steps are disclosed for different applications, as is a preferred reactor self-cleaning step.
摘要:
The disclosure relates to a showerhead for distributing gases in a semiconductor process chamber (100). In one embodiment, a showerhead (118) comprising a perforated center portion (214), a mounting portion (202) circumscribing the perforated center portion and a plurality of bosses (210) extending from the mounting portion each having a hole disposed therethrough is provided. Another embodiment of the invention provides a showerhead that includes a mounting portion (202) having a first side circumscribing a perforated center portion (214). A ring (304) extends from the first side of the mounting portion. A plurality of mounting holes (306) are disposed in the mounting portion radially to either side of the ring. The showerhead provides controlled thermal transfer between the showerhead and chamber lid resulting in less deposition on the showerhead.
摘要:
A lid assembly for distributing gases in a semiconductor process chamber (202). In one embodiment, a lid assembly (210) comprising a perforated center portion (218), a mounting portion (1202) circumscribing the perforated center portion and a plurality of bosses (1210) extending from the mounting portion each having a hole (1306) disposed therethrough is provided. Another embodiment of the invention provides a showerhead (218) that includes a mounting portion having a first side (1206) circumscribing a perforated center portion. A ring extends from the first side of the mounting portion. A plurality of mounting holes are disposed in the mounting portion radially to either side of the ring. The showerhead provides controlled thermal transfer between the showerhead and chamber lid resulting in less deposition on the showerhead.