Sensor module and protective glass

Patent metadata

Field	Value
Publication number	US-11761799-B2
Application number	US-202218057784-A
Country	US
Kind code	B2
Filing date	Nov 22, 2022
Priority date	Jul 5, 2017
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A sensor module includes: a base member; at least one of a single or a plurality of sensors and vibrators arranged on the base member; and a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators. A part or whole of the protective member is formed of a strengthened glass and the strengthened glass is a chemically strengthened glass or a physically strengthened glass.

First claim

The invention claimed is:

1. A sensor module comprising:
a base member;
at least one of a single or a plurality of sensors and vibrators arranged on the base member; and
a protective member constituted of at least one flat surface or a curved surface, provided so as to cover the at least one of the sensors and the vibrators,
wherein a part or whole of the protective member is formed of a strengthened glass,
the strengthened glass is a chemically strengthened glass, and has a thickness of 1.5 mm or more,
the chemically strengthened glass has a curved surface shape having a convex surface and a concave surface, and
a value obtained by subtracting a surface compressive stress value of the concave surface from a surface compressive stress value of the convex surface is 10 MPa or more.

2. The sensor module according to claim 1 , wherein the strengthened glass has a surface compressive stress value of 400 MPa or more.

3. The sensor module according to claim 1 , wherein the strengthened glass has a surface compressive stress value of 600 MPa or more.

4. The sensor module according to claim 1 , wherein the strengthened glass has a surface compressive stress value of 700 MPa or more.

5. The sensor module according to claim 1 , wherein the chemically strengthened glass has a depth of the compressive stress layer in a range of from 250 μm to 580 μm, and has a compressive stress value at a depth of 100 μm from a surface of 100 MPa or more.

6. The sensor module according to claim 1 , wherein a value obtained by subtracting a depth of compressive stress layer of the concave surface from a depth of compressive stress layer of the convex surface is 10 μm or more.

7. The sensor module according to claim 1 , wherein the vibrator has an ultrasonic generating element.

8. The sensor module according to claim 1 , wherein the protective member has a transparent heater.

9. The sensor module according to claim 1 , wherein the strengthened glass is a glass ceramics.

10. The sensor module according to claim 1 , wherein the strengthened glass has a water-repellent film on the surface of the strengthened glass.

11. A protective glass constituted of a flat surface or a curved surface,
wherein a part or whole of the protective glass is a strengthened glass,
the strengthened glass is a chemically strengthened glass, and has a thickness of 1.5 mm or more,
the chemically strengthened glass has a curved surface shape having a convex surface and a concave surface, and
a value obtained by subtracting a surface compressive stress value of the concave surface from a surface compressive stress value of the convex surface is 10 MPa or more.

12. The protective glass according to claim 11 , having an ultrasonic vibrator.

13. The protective glass according to claim 11 , having a transparent heater.

Assignees

• Agc Inc

Inventors

• Akiba shusaku
• Ozeki Masao
• Takeda Satoshi
• Kanasugi Satoshi
• Ogami Satoshi

Classifications

• B32B17/10137 Primary

  Chemical strengthening · CPC title

• G01D11/26 Primary

  Windows; Cover glasses; Sealings therefor · CPC title

• C03B27/012

  by heat treatment, e.g. for crystallisation; Heat treatment of glass products before tempering by cooling (C03B27/008, C03B27/016 take precedence) · CPC title

• C03C10/00

  Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition · CPC title

• C03C17/28

  with organic material (C03C17/34, C03C17/44 take precedence) · CPC title