Curved vehicle displays

Patent metadata

Field	Value
Publication number	US-11919396-B2
Application number	US-202318142116-A
Country	US
Kind code	B2
Filing date	May 2, 2023
Priority date	Sep 13, 2017
Publication date	Mar 5, 2024
Grant date	Mar 5, 2024

Abstract

Embodiments of a curved vehicle display including a display module having a display surface, a curved glass substrate disposed on the display surface having a first major surface, a second major surface having a second surface area, and a thickness in a range from 0.05 mm to 2 mm, wherein the second major surface comprises a first radius of curvature of 200 mm or greater, wherein, when the display module emits a light, the light transmitted through the glass substrate has a substantially uniform color along 75% or more of the second surface area, when viewed at a viewing angle at a distance of 0.5 meters from the second surface. Methods of forming a curved vehicle display are also disclosed.

First claim

What is claimed is:

1. A curved vehicle display comprising:
a display module having a display surface;
a curved glass substrate that is cold-formed and attached to the display surface with an adhesive, the glass substrate comprising a first major surface adjacent the display module, a second major surface having a second surface area, a minor surface connecting the first major surface and the second major surface, and a thickness in a range from 0.05 mm to 2 mm, wherein the second major surface comprises a first radius of curvature in a range from 200 mm to 1500 mm,
wherein, when the display module emits a light, the light is transmitted through the glass substrate and adhesive and has a substantially uniform color along 75% or more of the second surface area, when viewed at a viewing angle at a distance of 0.5 meters from the second major surface.

2. The curved vehicle display of claim 1 , wherein the adhesive comprises a thickness that is in a range from 200 μm to 500 μm.

3. The curved vehicle display of claim 2 , wherein the adhesive is disposed on a portion of a periphery of the curved glass substrate.

4. The curved vehicle display of claim 1 , wherein the display surface is curved and has a second radius of curvature that is within 10% of the first radius of curvature.

5. The curved vehicle display of claim 1 , wherein, after the light is transmitted through the glass substrate and adhesive, the light exhibits a ΔE* value that is less than 10, as measured using CIE L*a*b* color space and the equation ΔE*=[ΔL 2 +Δa 2 +Δb 2 ] 1/2 between different portions of the second surface area.

6. The curved vehicle display of claim 5 , wherein the viewing angle is 45 degrees from normal as measured at a center point of the first major surface.

7. The curved vehicle display of claim 1 , wherein the display module comprises a light source selected from the group consisting of light-emitting diodes (LEDs), an electroluminescent panel (ELP), cold cathode fluorescent lamps (CCFLs), hot cathode fluorescent lamps (HCFLs), and external electrode fluorescent lamps (EEFLs).

8. The curved vehicle display of claim 1 , wherein the display module comprises:
a touch panel; and
a backlight unit, wherein the touch panel and backlight unit are curved.

9. The curved vehicle display of claim 8 , wherein the touch panel comprises a second glass substrate that is cold-formed to exhibit a second radius of curvature that is within 10% of the first radius of curvature.

10. The curved vehicle display of claim 9 , wherein the second glass substrate is disposed adjacent to the first major surface of the curved glass substrate.

11. The curved vehicle display of claim 9 , wherein the backlight unit comprises a curved light guiding plate and wherein the second glass substrate is cold-fromed to the curved light guiding plate, wherein two different optically clear adhesives having different refractive indices attach the curved light guiding plate to the second glass substrate, wherein a first one of the optically clear adhesives is adjacent the curved light guiding plate and comprises a greater refractive index.

12. The curved vehicle display of claim 1 , wherein a maximum thickness of the glass substrate measured between the first and second major surfaces is less than or equal to 1.5 mm.

13. The curved vehicle display of claim 1 , wherein the glass substrate comprises strengthened glass.

14. The curved vehicle display of claim 1 , wherein at least one of an anti-glare coating, an anti-reflection coating, a tactile layer, and an easy-to-clean coating is disposed on the first major surface of the glass substrate.

15. A curved vehicle display comprising:
a support structure; and
a curved laminate structure that is cold-formed and attached to the support structure, the curved laminate structure comprising:
a back panel;
an adhesive; and
a curved glass substrate, the glass substrate comprising a first major surface attached to the back panel via the adhesive, a second major surface having a second surface area, a minor surface connecting the first major surface and the second major surface, and a thickness in a range from 0.05 mm to 2 mm, wherein the second major surface comprises a first radius of curvature in a range from 200 mm to 1500 mm,

wherein both the back panel and the curved glass substrate are cold-formed when the adhesive is partially cured,
wherein, when light from the back panel is transmitted through the glass substrate and adhesive, the light has a substantially uniform color along 75% or more of the second surface area, when viewed at a viewing angle at a distance of 0.5 meters from the second major surface.

16. The curved vehicle display of claim 15 , wherein, after the light is transmitted through the glass substrate and adhesive, the light exhibits a ΔE* value that is less than 10, as measured using CIE L*a*b* color space and the equation ΔE*=[ΔL 2 +Δa 2 +Δb 2 ] 1/2 between different portions of the second surface area.

17. The curved vehicle display of claim 16 , wherein the viewing angle is 45 degrees from normal as measured at a center point of the first major surface.

18. The curved vehicle display of claim 15 , wherein the back panel comprises:
a touch panel; and
a backlight unit, wherein the touch panel and backlight unit are curved.

19. The curved vehicle display of claim 18 , wherein the touch panel comprises a second glass substrate that is cold-formed to exhibit a second radius of curvature that is within 10% of the first radius of curvature.

20. The curved vehicle display of claim 19 , wherein the backlight unit comprises a curved light guiding plate and wherein the second glass substrate is cold-formed to the curved light guiding plate, wherein two different optically clear adhesives having different refractive indices attach the curved light guiding plate to the second glass substrate, wherein a first one of the optically clear adhesives is adjacent the curved light guiding plate and comprises a greater refractive index.

Assignees

• Corning Inc

Inventors

• Benjamin Jeffrey Michael
• Boggs Jordon Thomas
• Kumar Atul
• Li Cheng-Chung
• Sun Yawei

Classifications

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60K35/53

  Movable instruments, e.g. slidable · CPC title

• B60K35/80

  Arrangements for controlling instruments · CPC title

• B60K35/22

  Display screens · CPC title

• B60K35/50

  Instruments characterised by their means of attachment to or integration in the vehicle (B60K35/231 takes precedence) · CPC title