# US 9,883,270 B2 · Microphone with coined area

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- Number: US 9,883,270 B2
- Document ID: US9883270B2
- Status: Granted
- Kind: B2
- Application number: 15/154,545
- Filed: 2016-05-13
- Published: 2016-11-17
- Granted: 2018-01-30
- Earliest claimed: 2015-05-14
- Assignees: Knowles Electronics, LLC
- Applicants: Knowles Electronics, LLC
- Inventors: Tony K. Lim
- Web page: https://patentgrep.com/patent/US9883270B2

## CPC

- H04R 1/086: {Protective screens, e.g. all weather or wind screens}
- H04R 19/005: {using semiconductor materials}
- H04R 19/04: Microphones (H04R19/01 takes precedence)
- H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
- H10W 90/753: {between laterally-adjacent chips}
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A microphone includes a base and a microelectromechanical system (MEMS) die mounted to the base. The microphone also includes an integrated circuit fixed to the base. The microphone further includes a lid mounted to the base that encloses the MEMS die and the integrated circuit within a cavity formed by the base and the lid. The lid has an indented portion extending into but not fully through the lid.

## Claims

### Claim 1

A microphone comprising:
a base;
a microelectromechanical system (MEMS) die mounted to the base,
an integrated circuit fixed to the base;
a lid mounted to the base that encloses the MEMS die and the integrated circuit within a cavity formed by the base and the lid, wherein the lid has an indented portion extending into but not fully through the lid.

### Claim 2 (depends on 1)

The microphone of claim 1, wherein the indented portion comprises at least one opening that extends through the lid.

### Claim 3 (depends on 2)

The microphone of claim 2, wherein the at least one opening comprises a plurality of openings.

### Claim 4 (depends on 2)

The microphone of claim 2, wherein the at least one opening is configured to prevent ingress of contaminants.

### Claim 5 (depends on 2)

The microphone of claim 2, wherein the at least one opening is a single opening.

### Claim 6 (depends on 5)

The microphone of claim 5, wherein the single opening does not prevent the ingress of contaminants.

### Claim 7 (depends on 1)

The microphone of claim 1, wherein a port extends through the base, and wherein the MEMS die is mounted on a surface of the base that surrounds the port.

### Claim 8 (depends on 1)

The microphone of claim 1, further comprising a mesh screen that is disposed at least partially in the indented portion.

### Claim 9 (depends on 8)

The microphone of claim 8, wherein the mesh screen is completely disposed in the indented portion.

### Claim 10 (depends on 8)

The microphone of claim 8, wherein the indented portion comprises an opening, and wherein the mesh screen covers the opening.

### Claim 11 (depends on 8)

The microphone of claim 8, wherein the mesh screen extends out of the indented portion.

### Claim 12 (depends on 1)

The microphone of claim 1, wherein edges around the perimeter of the indented portion are rounded.

### Claim 13 (depends on 1)

The microphone of claim 1, further comprising wires between the integrated circuit and the MEMS device, wherein the indented portion allows a greater freedom of movement for the wires.

### Claim 14 (depends on 1)

The microphone of claim 1, wherein the base comprises a top surface and a bottom surface, and wherein the MEMS die and the lid are mounted to the top surface of the base.

### Claim 15 (depends on 1)

The microphone of claim 1, wherein the indented portion is on an inside surface of the lid.

### Claim 16 (depends on 15)

The microphone of claim 15, wherein the lid comprises a plurality of indented portions.

### Claim 17 (depends on 1)

The microphone of claim 1, wherein the indented portion is on an outside surface of the lid.

### Claim 18 (depends on 1)

The microphone of claim 1, wherein edges around the perimeter of the indented portion are square.

### Claim 19 (depends on 1)

The microphone of claim 1, wherein the lid is made of a metal, and wherein the base comprises a printed circuit board.

### Claim 20 (depends on 1)

The microphone of claim 1, wherein the lid comprises two printed circuit board pieces.

### Claim 21 (depends on 1)

The microphone of claim 1, wherein the lid does not comprise an opening.