Display substrate preventing light source light from passing to light sensor

Patent metadata

Field	Value
Publication number	US-12280668-B2
Application number	US-202318361394-A
Country	US
Kind code	B2
Filing date	Jul 28, 2023
Priority date	Jul 28, 2023
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A vehicle includes a window having a display. The display includes a substrate, a light source disposed at a first location of the substrate, a light sensor disposed at a second location of the substrate, and a first optical medium disposed on the substrate over the light source. The first optical medium includes a surface at an angle that prevents light from the light source from passing through the first optical medium and into the light sensor.

First claim

What is claimed is:

1. A display, comprising: a substrate; a light source disposed at a first location of the substrate; a light sensor disposed at a second location of the substrate; and a first optical medium disposed on the substrate over the light source, the first optical medium including a surface oriented such that light from the light source is incident at the surface at an angle greater than a critical angle for total internal reflection, thereby preventing light from the light source from passing through the first optical medium and into the light sensor.

2. The display of claim 1 , wherein the surface is a curved surface between the first location and the second location within a plane that is perpendicular to the substrate and includes the first location and the second location.

3. The display of claim 2 , wherein the surface is in a shape of a parabola and a focus of the parabola is located at the first location.

4. The display of claim 1 , further comprising an opening in the first optical medium above the light sensor, wherein a second optical medium fills the opening and is in contact with the first optical medium, wherein a first index of refraction of the first optical medium is greater than a second index of refraction of the second optical medium.

5. The display of claim 4 , wherein the second optical medium is air.

6. The display of claim 1 , wherein the surface is parallel to the substrate, further comprising a notch in the surface disposed at a location between the light source and an adjacent light source.

7. A window for a vehicle, comprising a display comprising: a substrate; a light source disposed at a first location of the substrate; a light sensor disposed at a second location of the substrate; and a first optical medium disposed on the substrate over the light source, the first optical medium including a surface oriented such that light from the light source is incident at the surface at an angle greater than a critical angle for total internal reflection, thereby preventing light from the light source from passing through the first optical medium and into the light sensor.

8. The window of claim 7 , wherein the surface is a curved surface between the first location and the second location within a plane that is perpendicular to the substrate and includes the first location and the second location.

9. The window of claim 8 , wherein the surface is in a shape of a parabola and a focus of the parabola is located at the first location.

10. The window of claim 7 , further comprising an opening in the first optical medium above the light sensor, wherein a second optical medium fills the opening and is in contact with the first optical medium, wherein a first index of refraction of the first optical medium is greater than a second index of refraction of the second optical medium.

11. The window of claim 10 , wherein the second optical medium is an optical bonding material that bonds a first pane of the window to a second pane of the window.

12. The window of claim 10 , wherein the second optical medium is air.

13. The window of claim 7 , wherein the surface is parallel to the substrate, further comprising a notch in the surface disposed at a location between the light source and an adjacent light source.

14. A vehicle, comprising: a window having a display, the display comprising: a substrate; a light source disposed at a first location of the substrate; a light sensor disposed at a second location of the substrate; and a first optical medium disposed on the substrate over the light source, the first optical medium including a surface oriented such that light from the light source is incident at the surface at an angle greater than a critical angle for total internal reflection, thereby preventing light from the light source from passing through the first optical medium and into the light sensor.

15. The vehicle of claim 14 , wherein the surface is a curved surface between the first location and the second location within a plane that is perpendicular to the substrate and includes the first location and the second location.

16. The vehicle of claim 15 , wherein the surface is in a shape of a parabola and a focus of the parabola is located at the first location.

17. The vehicle of claim 14 , further comprising an opening in the first optical medium above the light sensor, wherein a second optical medium fills the opening and is in contact with the first optical medium, wherein a first index of refraction of the first optical medium is greater than a second index of refraction of the second optical medium.

18. The vehicle of claim 17 , wherein the second optical medium is an optical bonding material that bonds a first pane of the window to a second pane of the window.

19. The vehicle of claim 17 , wherein the second optical medium is air.

20. The vehicle of claim 14 , wherein the surface is parallel to the substrate, further comprising a notch in the surface disposed at a location between the light source and an adjacent light source.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Park Jonglee
• Allen Jodi Mary Jean
• Larsen Michael K

Classifications

• B60K2360/1442

  Emulation of input devices · CPC title

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• B60K2360/92

  Manufacturing of instruments · CPC title

• B60K2360/785

  on or in relation to the windshield or windows · CPC title

• B60K2360/343

  Illumination of matrix displays · CPC title