Sensor module and protective glass

Patent metadata

Field	Value
Publication number	US-11543271-B2
Application number	US-202117476601-A
Country	US
Kind code	B2
Filing date	Sep 16, 2021
Priority date	Jul 5, 2017
Publication date	Jan 3, 2023
Grant date	Jan 3, 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,
the chemically strengthened glass has a surface compressive stress value of 200 MPa or more and a depth of compressive stress layer of 200 μm or more, and
a compressive stress value at a depth of 200 μm from a surface of the chemically strengthened glass is 0.39 times or more than a compressive stress value at a depth of 100 μm from the surface of the chemically strengthened glass.

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

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

4. The sensor module according to claim 1 , wherein the chemically strengthened glass has a surface compressive stress value of 800 MPa or more.

5. The sensor module according to claim 1 , wherein the chemically strengthened glass has a surface compressive stress value of 1,000 MPa or more.

6. The sensor module according to claim 1 , wherein the chemically strengthened glass has a surface compressive stress value of 1,100 MPa or more.

7. The sensor module according to claim 1 , wherein the chemically strengthened glass has a depth of compressive stress layer of 400 μm or more.

8. The sensor module according to claim 1 , wherein the chemically strengthened glass has a depth of compressive stress layer of 500 μm or more.

9. The sensor module according to claim 1 , wherein the chemically strengthened glass has a depth of compressive stress layer of 550 μm or more.

10. The sensor module according to claim 1 , wherein the compressive stress value at a depth of 200 μm from the surface of the chemically strengthened glass is 0.58 times or more than the compressive stress value at a depth of 100 μm from the surface the chemically strengthened glass.

11. The sensor module according to claim 1 , wherein the compressive stress value at a depth of 200 μm from the surface of the chemically strengthened glass is 0.60 times or more than the compressive stress value at a depth of 100 μm from the surface the chemically strengthened glass.

12. The sensor module according to claim 1 , wherein the chemically strengthened glass has a thickness of 1.5 mm or more.

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

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

15. 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,
the chemically strengthened glass has a surface compressive stress value of 200 MPa or more and a depth of compressive stress layer of 200 μm or more, and
a compressive stress value at a depth of 200 μm from a surface of the chemically strengthened glass is 0.39 times or more than a compressive stress value at a depth of 100 μm from the surface the chemically strengthened glass.

16. The protective glass according to claim 15 , having an ultrasonic vibrator.

17. The protective glass according to claim 15 , having a transparent heater.

Assignees

• Agc Inc

Inventors

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

Classifications

• 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

• G01D11/26 Primary

  Windows; Cover glasses; Sealings therefor · CPC title

• B32B17/10137 Primary

  Chemical strengthening · CPC title

• G01D11/245

  Housings for sensors · CPC title