Shower head apparatus and method for controlling plasma or gas distribution
First Claim
Patent Images
1. An apparatus, comprising:
- a stage configured to support a semiconductor wafer;
a shower head configured to be mounted inside a chamber and provide a processing gas onto the semiconductor wafer inside the chamber, the shower head having a supply plenum for supplying the gas to the chamber and a vacuum manifold fluidly coupled to the supply plenum, wherein the vacuum manifold comprises a plurality of vacuum zones, wherein each of the plurality of vacuum zones has a respective plurality of openings;
a first vacuum system fluidly coupled to the respective plurality of openings of a first subset of the plurality of vacuum zones of the vacuum manifold of the shower head, wherein the first vacuum system is configured to selectively apply a first vacuum level to the first subset of the plurality of vacuum zones; and
a second vacuum system fluidly coupled to the respective plurality of openings of a second subset of the plurality of vacuum zones of the vacuum manifold of the shower head, wherein the second vacuum system configured to selectively apply a second vacuum level to the second subset of the plurality of vacuum zones; and
a controller connected to the first and the second vacuum systems and configured to receive a thickness measurement of a film deposited on the semiconductor wafer for at least a first area of the semiconductor wafer and a second area of the semiconductor wafer after supplying the processing gas, with the first vacuum system at the first vacuum level and the second vacuum system at the second vacuum level, wherein the controller is configured to adjust at least one of the first vacuum level of the first vacuum system and the second vacuum level of the second vacuum system in response to the film thickness measurement, to increase uniformity of the deposited film.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus comprises: a shower head having a supply plenum for supplying the gas to the chamber and a vacuum manifold fluidly coupled to the supply plenum; and at least one vacuum system fluidly coupled to the vacuum manifold of the shower head.
18 Citations
17 Claims
-
1. An apparatus, comprising:
-
a stage configured to support a semiconductor wafer; a shower head configured to be mounted inside a chamber and provide a processing gas onto the semiconductor wafer inside the chamber, the shower head having a supply plenum for supplying the gas to the chamber and a vacuum manifold fluidly coupled to the supply plenum, wherein the vacuum manifold comprises a plurality of vacuum zones, wherein each of the plurality of vacuum zones has a respective plurality of openings; a first vacuum system fluidly coupled to the respective plurality of openings of a first subset of the plurality of vacuum zones of the vacuum manifold of the shower head, wherein the first vacuum system is configured to selectively apply a first vacuum level to the first subset of the plurality of vacuum zones; and a second vacuum system fluidly coupled to the respective plurality of openings of a second subset of the plurality of vacuum zones of the vacuum manifold of the shower head, wherein the second vacuum system configured to selectively apply a second vacuum level to the second subset of the plurality of vacuum zones; and a controller connected to the first and the second vacuum systems and configured to receive a thickness measurement of a film deposited on the semiconductor wafer for at least a first area of the semiconductor wafer and a second area of the semiconductor wafer after supplying the processing gas, with the first vacuum system at the first vacuum level and the second vacuum system at the second vacuum level, wherein the controller is configured to adjust at least one of the first vacuum level of the first vacuum system and the second vacuum level of the second vacuum system in response to the film thickness measurement, to increase uniformity of the deposited film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A semiconductor equipment system, comprising:
-
a processing chamber including a stage configured to support a semiconductor wafer; and an apparatus configured to provide a processing gas onto a semiconductor wafer inside the processing chamber, the apparatus comprising; a shower head configured to be mounted inside the processing chamber, the shower head having a supply plenum for supplying the gas to the chamber and a vacuum manifold fluidly coupled to the supply plenum, wherein the vacuum manifold comprises a plurality of vacuum zones, wherein each of the plurality of vacuum zones has a respective plurality of openings; and a first vacuum system fluidly coupled to the respective plurality of openings of a first subset of the plurality of vacuum zones of the vacuum manifold of the shower head, and; and a second vacuum system fluidly coupled to the respective plurality of openings of a second subset of the plurality of vacuum zones of the vacuum manifold of the shower head; and a controller connected to the first and the second vacuum systems and configured to receive a thickness measurement of a film deposited for at least a first area of the semiconductor wafer and a second area of the semiconductor wafer after supplying the processing gas, wherein the controller is configured to adjust at least one of the first vacuum system and the second vacuum system in response to the film thickness measurement, to increase uniformity of the deposited film. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. A semiconductor equipment system, comprising:
-
a processing chamber including a stage configured to support a semiconductor wafer; and an apparatus configured to provide a processing gas onto a semiconductor wafer inside the processing chamber, the apparatus comprising; a shower head configured to be mounted inside the processing chamber, the shower head having a supply plenum for supplying the gas to the chamber and a vacuum manifold fluidly coupled to the supply plenum, wherein the supply plenum comprises a first plate and a second plate in an opposed relationship, wherein the vacuum manifold comprises a plurality of vacuum zones, and wherein each of the plurality of vacuum zones has a respective plurality of openings formed in the second plate; and a first vacuum system fluidly coupled to the respective plurality of openings of a first subset of the plurality of vacuum zones of the vacuum manifold of the shower head, and wherein the respective plurality of openings of the first subset of the plurality of vacuum zones are arranged in a circular shape oriented concentrically with the stage inside the chamber; and a second vacuum system fluidly coupled to the respective plurality of openings of a second subset of the plurality of vacuum zones of the vacuum manifold of the shower head, and wherein the respective plurality of openings of the second subset of the plurality of vacuum zones are arranged in a circular shape oriented concentrically with the stage inside the chamber and concentrically with the respective plurality of openings of the first subset of the plurality of vacuum zones; and a controller connected to the first and the second vacuum systems and configured to receive a thickness measurement of a film deposited for at least a first area of the semiconductor wafer and a second area of the semiconductor wafer after supplying the processing gas, with the first vacuum system at a first vacuum level and the second vacuum system at a second vacuum level, wherein the controller is configured to adjust at least one of the first vacuum level of the first vacuum system and the second vacuum level of the second vacuum system in response to the film thickness measurement.
-
Specification