Gas distribution plate and substrate treating apparatus including the same
First Claim
1. A gas distribution plate that is installed in a chamber providing a reaction space and supplies a reaction gas onto a substrate placed on a substrate placing plate, the gas distribution plate comprising:
- first and second surfaces opposite to each other, wherein the second surface faces the substrate placing plate and has a recess; and
a plurality of injection holes each including;
an inflow portion that extends from the first surface toward the second surface;
a diffusing portion that extends from the second surface toward the first surface; and
an orifice portion between the inflow portion and the diffusing portion,wherein heights of the plurality of inflow portions in a gas path direction decrease from an edge portion to a center portion of the gas distribution plate, and wherein the plurality of diffusing portions of the plurality of injection holes have substantially the same dimensions in the gas path direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A gas distribution plate that is installed in a chamber providing a reaction space and supplies a reaction gas onto a substrate placed on a substrate placing plate, wherein the gas distribution plate includes: first and second surfaces opposing to each other, wherein the second surface faces the substrate placing plate and has a recess shape; and a plurality of injection holes each including: an inflow portion that extends from the first surface toward the second surface; a diffusing portion that extends from the second surface toward the first surface; and an orifice portion between the inflow portion and the diffusing portion, wherein the plurality of inflow portions of the plurality of injection holes decrease in gas path from edge to middle of the gas distribution plate, and wherein the plurality of diffusing portions of the plurality of injection holes have substantially the same gas path.
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Citations
20 Claims
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1. A gas distribution plate that is installed in a chamber providing a reaction space and supplies a reaction gas onto a substrate placed on a substrate placing plate, the gas distribution plate comprising:
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first and second surfaces opposite to each other, wherein the second surface faces the substrate placing plate and has a recess; and a plurality of injection holes each including; an inflow portion that extends from the first surface toward the second surface; a diffusing portion that extends from the second surface toward the first surface; and an orifice portion between the inflow portion and the diffusing portion, wherein heights of the plurality of inflow portions in a gas path direction decrease from an edge portion to a center portion of the gas distribution plate, and wherein the plurality of diffusing portions of the plurality of injection holes have substantially the same dimensions in the gas path direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A substrate treating apparatus, comprising:
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a chamber providing a reaction space; a substrate placing plate in the reaction space, wherein a substrate is placed on the substrate placing plate; and a gas distribution plate in the reaction space, the gas distribution plate including; first and second surfaces opposing to each other, wherein the second surface faces the substrate placing plate and has a recess shape; and a plurality of injection holes each including; an inflow portion that extends from the first surface toward the second surface; a diffusing portion that extends from the second surface toward the first surface; and an orifice portion between the inflow portion and the diffusing portion, wherein dimensions in a gas path direction of the plurality of inflow portions of the plurality of injection holes decrease from edge to middle of the gas distribution plate, and wherein the plurality of diffusing portions of the plurality of injection holes have substantially the same dimensions in the gas path direction. - View Dependent Claims (16)
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17. A gas distribution plate configured to supply a reaction gas to a substrate placed on a substrate placing plate in a chamber providing a reaction space, the gas distribution plate comprising:
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first and second surfaces arranged opposite to each other, wherein the second surface is configured to face the substrate placing plate when arranged in the chamber; and a recess formed along the second surface such that the gas distribution plate is narrower toward a center thereof and thicker toward edges thereof; a plurality of injection holes extending through the gas distribution plate from the first surface to the second surface, each injection hole including; an inflow portion having a length that extends from the first surface toward the second surface; a diffusing portion having a length that extends from the second surface toward the first surface; and an orifice portion having a length that extends between the inflow portion and the diffusing portion, wherein lengths of the inflow portions of the plurality of injection holes decrease from an edge portion to a center portion of the gas distribution plate, and wherein lengths of each of the diffusing portions of the plurality of injection holes are substantially the same. - View Dependent Claims (18, 19)
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20. A substrate treating apparatus, comprising:
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a chamber providing a reaction space; a substrate placing plate disposed in the reaction space, wherein the substrate placing plate is configured to receive a substrate on a top surface of the substrate placing plate; and a gas distribution plate arranged in the reaction space, the gas distribution plate including; first and second surfaces arranged opposite to each other, wherein the second surface faces the substrate placing plate and has a shape recessed toward the first surface; and a plurality of injection holes arranged through the gas distribution plate, each injection hole including; an inflow portion that extends for a length from the first surface toward the second surface; a diffusing portion that extends for a length from the second surface toward the first surface; and an orifice portion extending between the inflow portion and the diffusing portion, wherein the lengths of one or more of the inflow portions of the plurality of injection holes near a center portion of the gas distribution plate are shorter than the lengths of one or more of the inflow portions of the plurality of injection holes near an edge portion thereof, and wherein the lengths of the diffusing portions of the plurality of injection holes are substantially the same.
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Specification