Laminated pane comprising a photopolymer layer and PDLC element

Patent metadata

Field	Value
Publication number	US-11960081-B2
Application number	US-202117911086-A
Country	US
Kind code	B2
Filing date	Feb 24, 2021
Priority date	Mar 13, 2020
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A laminated pane, includes, in this order, an outer pane, an intermediate layer, a functional element with electrically controllable optical properties that is selected from among a PDLC functional element, a PNLC functional element, or an SPD functional element, an intermediate layer, a holographic display element, an intermediate layer, and an inner pane.

First claim

The invention claimed is:

1. A laminated pane, comprising, in this order,
an outer pane,
a first intermediate layer,
a functional element with electrically controllable optical properties that is selected from among a PDLC functional element, a PNLC functional element, or an SPD functional element,
a second intermediate layer,
a holographic display element,
a third intermediate layer), and
an inner pane.

2. The laminated pane according to claim 1 , wherein the holographic display element comprises, in this order, a cover layer, a photopolymer layer, and a substrate layer.

3. The laminated pane according to claim 2 , wherein the functional element comprises, in this order, a first carrier layer, a first surface electrode, an active layer, a second surface electrode, and a second carrier layer.

4. The laminated pane according to claim 3 , wherein
in the holographic display element, the substrate layer has a thickness in the range from 50 to 200 μm, the photopolymer layer has a thickness in the range from 10 to 80 μm, or the cover layer has a thickness in the range from 50 to 250 μm, or both, or
in the functional element, the first and second carrier layers have, independently in each case, a thickness in the range from 100 to 200 μm, the first and second surface electrodes have, independently in each case, a thickness in the range from 30 to 400 nm, or the active layer has a thickness in the range from 10 to 30 μm, or both, or
the first, second and third intermediate layers have, independently in each case, a thickness in the range from 200 to 800 μm.

5. The laminated pane according to claim 3 , wherein in the functional element, the first and second carrier layers are formed from polyethylene terephthalate (PET) film, or the first and second surface electrodes are formed from ITO layers, or both.

6. The laminated pane according to claim 5 , wherein in the functional element is the PDLC functional element.

7. The laminated pane according to claim 2 , wherein
the substrate layer of the holographic display element is formed from polyamide (PA) film or cellulose triacetate (TAC) film, or

the cover layer of the holographic display element is formed from polyamide (PA) film, cellulose triacetate (TAC) film, polymethyl methacrylate (PMMA) film, or polyethylene terephthalate (PET) film,
or both.

8. The laminated pane according to claim 1 , wherein the functional element is a PDLC functional element.

9. The laminated pane according to claim 1 , wherein
the first, second and third intermediate layers are formed from polyvinyl butyral (PVB) film, thermoplastic polyurethane (TPU) film, ethylene vinyl acetate copolymer (EVA) film, OCA film, or a combination thereof.

10. A method for generating visual information with a head-up display, comprising generating an image with an imaging unit, and directing the image onto a laminated pane according to claim 1 as a projection surface, wherein the visual information is viewed from a space that faces a side of the inner pane.

11. The method according to claim 10 , wherein the laminated pane is mounted in a vehicle or a structure.

12. A method comprising forming a projection surface for a head-up display with the laminated pane according to claim 1 .

13. The method according to claim 12 , wherein the laminated pane is mounted in a vehicle or in a structure.

14. A vehicle or structure, in which a laminated pane according to claim 1 is mounted.

15. The vehicle or structure according to claim 14 ,
that is the vehicle selected from among a motor vehicle or a transport vehicle, or
that is the structure wherein the laminated pane is mounted as a window pane or a separating pane.

16. The vehicle or structure according to claim 15 , wherein the motor vehicle is a passenger car and the transport vehicle is a bus, a train an aircraft, or a watercraft.

17. The vehicle or structure according to claim 14 , wherein the laminated pane is a rear window, side window, windshield or roof panel of a vehicle.

18. The vehicle or structure according to claim 14 , in which a head-up display is mounted that comprises an imaging unit, wherein the laminated pane serves as a projection surface of the head-up display.

Assignees

• Saint Gobain

Inventors

• Gomer Andreas
• Roderburg Andreas
• Zhang Huixing

Classifications

• G02B27/0103 Primary

  comprising holographic elements · CPC title

• B32B7/02

  Physical, chemical or physicochemical properties · CPC title

• B32B17/10

  of synthetic resin · CPC title

• B32B25/08

  of synthetic resin · CPC title

• B32B27/08

  of synthetic resin · CPC title