# US 2021/0280475 A1 · Semiconductor manufacturing apparatus and method of manufacturing semiconductor device

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- Number: US 2021/0280475 A1
- Document ID: US20210280475A1
- Status: Published application
- Kind: A1
- Application number: 17/017,404
- Filed: 2020-09-10
- Published: 2021-09-09
- Earliest claimed: 2020-03-06
- Assignees: Kioxia Corporation
- Applicants: Kioxia Corporation
- Inventors: Jun TAKAGI
- Web page: https://patentgrep.com/patent/US20210280475A1

## CPC

- H10P 74/238: {comprising acting in response to an ongoing measurement without interruption of processing, e.g. endpoint detection or in-situ thickness measurement}
- B24B 37/013: Devices or means for detecting lapping completion
- H10P 52/402: {of semiconductor materials}
- H10P 74/23: {characterised by multiple measurements, corrections, marking or sorting processes}
- H10P 74/203: {Structural properties, e.g. testing or measuring thicknesses, line widths, warpage, bond strengths or physical defects}
- H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS

## Abstract

In one embodiment, a semiconductor manufacturing apparatus includes a polisher configured to polish a film provided on a substrate. The apparatus further includes a thickness measurement module configured to measure a thickness of the film while the substrate is being conveyed before the polishing. The apparatus further includes a controller configured to control the polishing of the film by the polisher based on the thickness measured by the thickness measurement module.

## Claims

### Claim 1

A semiconductor manufacturing apparatus comprising:
a polisher configured to polish a film provided on a substrate;
a thickness measurement module configured to measure a thickness of the film while the substrate is being conveyed before the polishing; and
a controller configured to control the polishing of the film by the polisher based on the thickness measured by the thickness measurement module.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein the thickness measurement module measures the thickness at a plurality of portions of the film.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the controller sets a polishing condition in which the polisher polishes the film, based on the thickness measured by the thickness measurement module.

### Claim 4 (depends on 1)

The apparatus of claim 1, further comprising a conveyance module configured to hold and convey the substrate,
wherein the thickness measurement module is provided in the conveyance module.

### Claim 5 (depends on 4)

The apparatus of claim 4, wherein
the conveyance module includes a first member positioned under the substrate during the conveyance of the substrate, and
the thickness measurement module is provided in the first member.

### Claim 6 (depends on 4)

The apparatus of claim 4, wherein
the conveyance module includes a second member positioned above the substrate during the conveyance of the substrate, and
the thickness measurement module is provided in the second member.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the thickness measurement module measures the thickness while the substrate is moving.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the thickness measurement module measures the thickness when the substrate passes through a predetermined point in the semiconductor manufacturing apparatus.

### Claim 9 (depends on 1)

The apparatus of claim 1, further comprising a transporter configured to transport the substrate in a polishing chamber provided with the polisher,
wherein the thickness measurement module is provided in the transporter.

### Claim 10 (depends on 1)

The apparatus of claim 1, further comprising a reversing module configured to reverse orientations of a first face and a second face of the substrate,
wherein the thickness measurement module is provided in the reversing module.

### Claim 11 (depends on 2)

The apparatus of claim 2, wherein
the polisher includes an airbag that presses the substrate against a polishing pad, and
the thickness measurement module measures the thickness at the plurality of portions, a number of the portions being equal to or greater than a number of airbag zones of the airbag.

### Claim 12

A method of manufacturing a semiconductor device, comprising:
measuring a thickness of a film provided on a substrate by a thickness measurement module while the substrate is being conveyed before polishing by a polisher;
polishing the film by the polisher; and
controlling, by a controller, the polishing of the film by the polisher based on the thickness measured by the thickness measurement module.

### Claim 13 (depends on 12)

The method of claim 12, wherein the thickness measurement module measures the thickness at a plurality of portions of the film.

### Claim 14 (depends on 12)

The method of claim 12, wherein the controller sets a polishing condition in which the polisher polishes the film, based on the thickness measured by the thickness measurement module.

### Claim 15 (depends on 12)

The method of claim 12, further comprising holding and conveying the substrate by a conveyance module,
wherein the thickness measurement module is provided in the conveyance module.

### Claim 16 (depends on 13)

The method of claim 13, wherein
the polisher includes an airbag that presses the substrate against a polishing pad, and
the thickness measurement module measures the thickness at the plurality of portions, a number of the portions being equal to or greater than a number of airbag zones of the airbag.

### Claim 17

A semiconductor manufacturing apparatus comprising:
a processing module configured to process a film provided on a substrate;
a thickness measurement module configured to measure a thickness of the film while the substrate is being conveyed before the processing; and
a controller configured to control the processing of the film by the processing module based on the thickness measured by the thickness measurement module.

### Claim 18 (depends on 17)

The apparatus of claim 17, wherein the processing of the film is polishing or etching of the film.

### Claim 19

A method of manufacturing a semiconductor device, comprising:
measuring a thickness of a film provided on a substrate by a thickness measurement module while the substrate is being conveyed before processing by a processing module;
processing the film by the processing module; and
controlling, by a controller, the processing of the film by the processing module based on the thickness measured by the thickness measurement module.

### Claim 20 (depends on 19)

The method of claim 19, wherein the processing of the film is polishing or etching of the film.
