Method of defining a line width
AssigneeMotorola, Inc.
InventorsRichard S. Burton, Gordon M. Grivna
Life of this patent
Estimating the term…
Abstract
A method of defining a line width includes forming a spacer (45) over a layer (42) and using the spacer (45) as an etch mask (57) while etching the layer (42). In this manner, a width (47) of the spacer (45) is used to define a width or line width (47) for the layer (42). Another method of using a spacer to define a line width includes forming a spacer (14) over a substrate (11), depositing a layer (15) over the substrate (11) and the spacer (14), planarizing the layer (15) to expose the spacer (14), and removing the spacer (14) to form an opening (19) over the substrate (11), wherein the opening (19) has a width or line width (17) of the spacer (14).
Claims23
A method of defining a line width, the method comprising the steps of:
- providing a spacer having a width;
- depositing a layer over the spacer;
- and
- using the width of the spacer to define the line width by removing the spacer to form a hole in the layer, the hole having the line width.
A method of making a semiconductor device, the method comprising the steps of:
- providing a spacer having a width;
- using the width of the spacer to define a line width, wherein the step of using the width of the spacer to define the line width includes using the spacer as an etch mask;
- providing a substrate under the spacer;
- and
- forming a temporary structure over the substrate, wherein the step of using the width of the spacer to define the line width includes using the width of the spacer to define a line width of the temporary structure.
A method of manufacturing a semiconductor device, the method comprising the steps of:
- providing a spacer having a width;
- using the width of the spacer to define a line width, wherein the step of providing the spacer includes providing a temporary structure comprised of the spacer;
- providing a substrate under the spacer;
- providing an electrically insulating layer over the temporary structure and the substrate;
- removing a first portion of the electrically insulating layer to expose a second portion of the temporary structure;
- and
- removing the temporary structure to form an opening over the substrate, the opening defined by the temporary structure.
A method of forming a semiconductor component, the method comprising the steps of:
- providing a substrate;
- forming a spacer having a width, the spacer located over the substrate;
- covering the spacer with a dielectric layer;
- exposing a portion of the spacer;
- forming an opening over the substrate by etching the spacer;
- and
- depositing an electrically conductive layer in the opening.
A method of fabricating a semiconductor component, the method comprising the steps of:
- providing a semiconductor substrate;
- depositing a first dielectric layer over the semiconductor substrate;
- depositing a second dielectric layer over the first dielectric layer;
- using the second dielectric layer to form a spacer over the first dielectric layer;
- using the first dielectric layer and the spacer to create a temporary structure over the semiconductor substrate;
- depositing a third dielectric layer over the temporary structure;
- planarizing the third dielectric layer to expose the temporary structure;
- forming an opening over the semiconductor substrate by removing the temporary structure;
- and
- depositing an electrically conductive layer in the opening.
A method of making a semiconductor component, the method comprising the steps of:
- providing a semiconductor substrate;
- depositing a gate layer over the semiconductor substrate;
- depositing a first dielectric layer over the gate layer;
- using the first dielectric layer to form a spacer over the gate layer, the spacer having a width;
- and
- transferring the width of the spacer into the gate layer to produce a gate electrode having a gate length substantially equal to the width of the spacer.
A method of making a semiconductor component, the method comprising the steps of:
- providing a semiconductor substrate;
- depositing a gate layer over the semiconductor substrate;
- depositing a first dielectric layer over the gate layer;
- using the first dielectric layer to form a spacer over the gate layer, the spacer having a width;
- transferring the width of the spacer into the gate layer to produce a gate electrode having a gate length substantially equal to the width of the spacer, wherein the step of transferring the width of the spacer into the gate layer includes anisotropically etching the gate layer and wherein the step of using the first dielectric layer to form the spacer includes the steps of:
- etching the first dielectric layer to form a temporary structure;
- depositing a second dielectric layer over the first dielectric layer and over the gate layer;
- anisotropically etching the second dielectric layer to form the spacer adjacent to the temporary structure;
- and
- removing the temporary structure.
Dependencies are inferred from the claim text.