# US 2025/0082015 A1 · Cartridge for aerosol generating device including vibrator and method of manufacturing vibrator

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- Number: US 2025/0082015 A1
- Document ID: US20250082015A1
- Status: Published application
- Kind: A1
- Application number: 18/569,456
- Filed: 2023-06-14
- Published: 2025-03-13
- Earliest claimed: 2022-06-23
- Assignees: Kt&G Corporation
- Applicants: Kt&G Corporation
- Inventors: Chul Ho JANG; Gyoung Min GO; Jangwon SEO; Jin Chul JUNG
- Web page: https://patentgrep.com/patent/US20250082015A1

## CPC

- A24F 40/05: Devices without heating means
- A24F 40/42: Cartridges or containers for inhalable precursors
- A24F 40/10: Devices using liquid inhalable precursors
- A24F 40/51: Arrangement of sensors
- A24F 40/70: Manufacture
- A24F: SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES (inhaling appliances for medical purposes, shaped like cigars, cigarettes or pipes A61M15/06)

## Abstract

A cartridge for an aerosol generating device includes a reservoir configured to store an aerosol generating material, and a vibrator configured to generate vibration to atomize the aerosol generating material, wherein the vibrator may include a body configured to generate vibration, an electrode layer stacked on at least one surface of the body, and a coating layer stacked in a partial area of the electrode layer and formed of a light absorbing material.

## Claims

### Claim 1

A cartridge for an aerosol generating device, the cartridge comprising:
a reservoir configured to store an aerosol generating material; and
a vibrator configured to generate vibration to atomize the aerosol generating material,
wherein the vibrator comprises:
a body configured to generate the vibration;
an electrode layer stacked on at least one surface of the body; and
a coating layer stacked in a partial area of the electrode layer and formed of a light absorbing material.

### Claim 2 (depends on 1)

The cartridge of claim 1, wherein
the vibrator comprises the electrode layer in plurality,
wherein a plurality of electrode layers comprise:
a first electrode layer formed on one surface of the body of the vibrator; and
a second electrode layer formed on the other surface, opposite to the one surface, of the body of the vibrator.

### Claim 3 (depends on 2)

The cartridge of claim 2, wherein
the coating layer is stacked on the second electrode layer.

### Claim 4 (depends on 2)

The cartridge of claim 2, wherein
the vibrator further comprises a shield layer stacked in a partial area of the first electrode layer and formed of a non-conductive material.

### Claim 5 (depends on 4)

The cartridge of claim 4, wherein
the shield layer comprises a water-repellent material to prevent the vibrator from absorbing the aerosol generating material.

### Claim 6 (depends on 1)

The cartridge of claim 1, further comprising:
a transmission member configured to receive the aerosol generating material from the reservoir and atomize the aerosol generating material by vibration of the vibrator,
wherein the vibrator comprises a first surface facing the transmission member and a second surface opposite to the first surface.

### Claim 7 (depends on 6)

The cartridge of claim 6, wherein
the coating layer is stacked to overlap a substantial center of the second surface of the vibrator.

### Claim 8 (depends on 6)

The cartridge of claim 6, wherein
the coating layer occupies 50% or larger of an area of the second surface of the vibrator.

### Claim 9 (depends on 6)

The cartridge of claim 6, wherein
the coating layer comprises:
a first coating area stacked to overlap a substantial center of the second surface of the vibrator; and
a second coating area stacked to overlap a substantial periphery of the second surface of the vibrator.

### Claim 10 (depends on 1)

The cartridge of claim 1, wherein
the coating layer comprises a dye having a reflectance smaller than 50%, and is formed of glass, ceramic, a polymer, or a combination thereof.

### Claim 11 (depends on 1)

The cartridge of claim 1, wherein
the coating layer is formed of a combination of a dye having a reflectance smaller than 50% and substantially a same material as the body of the vibrator.

### Claim 12

An aerosol generating device comprising:
a reservoir configured to store an aerosol generating material;
a vibrator configured to generate vibration to atomize the aerosol generating material; and
a temperature sensor configured to sense a temperature of the vibrator,
wherein the vibrator comprises:
a body configured to generate the vibration;
an electrode layer stacked on at least one surface of the body; and
a coating layer stacked in a partial area of the electrode layer and formed of a light absorbing material,
wherein the coating layer is stacked in a partial area, facing the temperature sensor, of the electrode layer.

### Claim 13

A method of manufacturing a vibrator, the method comprising:
disposing a body of a vibrator configured to generate vibration when a current is supplied thereto;
depositing an electrode layer on one surface and the other surface, opposite to the one surface, of the body;
depositing a coating layer formed of a light absorbing material on a partial area of the electrode layer deposited on the one surface of the body; and
performing heat treatment on the body, the electrode layer, and the coating layer.

### Claim 14 (depends on 13)

The method of claim 13, further comprising:
prior to the depositing of the coating layer,
forming the coating layer by combining a dye having a reflectance smaller than 50% with glass, ceramic, a polymer, or a combination thereof.

### Claim 15 (depends on 13)

The method of claim 13, further comprising:
prior to the depositing of the coating layer,
forming the coating layer by combining a dye having a reflectance smaller than 50% with substantially a same material as the body of the vibrator.