Dyed polymer coating for display panel

• US 20050100690A1
• Filed: 11/06/2003
• Published: 05/12/2005
• Est. Priority Date: 11/06/2003
• Status: Abandoned Application

• Current Assignee: Viavi Solutions, Inc. (Lumentum Holdings Inc.)
• Original Assignee: Optical Coating Laboratory, Inc. (Lumentum Holdings Inc.)
• Inventors: Mayer, Thomas, Shah, Hiren V., Duffy, Brad A., Zoborowski, Richard K.
• Application Number:
  US10/705,161
• Publication Number:
  US 20050100690A1
• Time in Patent Office: Days
• US Class Current: 428/34
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10339 Specific parts of the laminated safety glass or glazing being colored or tinted tinted glass sheet B32B17/1011; tinted interlayer B32B17/10651
• CPC Class Codes: C03C 17/007 containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase
• CPC Class Codes: C03C 17/32 with synthetic or natural resins C03C17/30 takes precedence
• CPC Class Codes: C03C 17/34 with at least two coatings having different compositions C03C17/44 takes precedence
• CPC Class Codes: C03C 2217/445 Organic continuous phases
• CPC Class Codes: C03C 2217/77 Coatings having a rough surface
• CPC Class Codes: C09D 175/04 Polyurethanes
• CPC Class Codes: G02B 1/111 using layers comprising organic materials
• CPC Class Codes: Y10T 428/24355 Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Abstract

An transmissive panel includes a polymer coating with a textured antireflective surface. Texturing of the surface is achieved in a variety of fashions. In some embodiments the polymer coating is embossed after application to the panel. In other embodiments, the polymer coating is solvent-based and develops a textured surface as a result differential shrinkage. In yet other embodiments, an aerosol of solvent-based polymer precursor is applied to the surface as a combination of high-viscosity droplets and low-viscosity droplets, portions of high-viscosity droplets extending above a film of polymer formed from low-viscosity droplets to provide a textured antireflective surface.

Claims

1. A transmissive panel comprising:

a substrate;

a polymer coating dried on the substrate forming a textured antireflective surface of the polymer coating.

2. The transmissive panel of claim 1 wherein the polymer coating includes a dye to form a dyed polymer coating.

3. The transmissive panel of claim 2 wherein the polymer coating is formed from a water-based polymer system and the dye comprises a cyanine dye.

4. The transmissive panel of claim 2 wherein the dyed polymer coating is a contrast-enhancing filter.

5. The transmissive panel of claim 2 wherein the dyed polymer coating is a color-balancing filter.

6. The transmissive panel of claim 2 wherein the polymer coating has a total thickness variation of not more than 5% to achieve a transmission variation substantially undetectable by an unaided human eye.

7. The transmissive panel of claim 6 wherein the substrate is a glass panel at least 61 cm×

61 cm.

8. The transmissive panel of claim 6 wherein the substrate is a curved glass panel.

9. The transmissive panel of claim 2 further comprising an electromagnetic field filter disposed between the substrate and the polymer coating.

10. The transmissive panel of claim 1 wherein the textured antireflective surface is formed by embossing a partially dry polymer layer.

11. The transmissive panel of claim 1 wherein the polymer coating is formed from a solubilized polymer solution applied to the substrate and the textured antireflective surface comprises a random textured surface pattern formed from differential shrinkage of the solubilized polymer solution on the substrate.

12. The transmissive panel of claim 1 wherein the polymer coating is formed from a solubilized polymer solution applied to the substrate as an aerosol having high-viscosity droplets and low-viscosity droplets, the textured antireflective surface comprising portions of at least some high-viscosity droplets extending above an essentially continuous polymer film.

13. The transmissive panel of claim 12 wherein the solubilized polymer solution comprises dye at a concentration selected to avoid phase separation of the dye in both the high-viscosity droplets and the essentially continuous polymer film.

14. The transmissive panel of claim 1 wherein the substrate is a glass panel and the polymer coating has a thickness selected to retard the formation of loose glass shards if the glass panel shatters.

15. The transmissive panel of claim 2 wherein the substrate is a glass panel and the polymer coating has a dye concentration and a thickness selected to retard the formation of loose glass shards if the glass panel shatters and to provide a selected absorption of light having a wavelength of about 585 nm.

16. The transmissive panel of claim 1 wherein the polymer coating includes a clear polymer layer having the textured antireflective surface and a dyed polymer layer between the clear polymer layer and the substrate.

17. The transmissive panel of claim 1 wherein the polymer coating is formed from water-based polyurethane containing at least one co-solvent.

18. The transmissive panel of claim 17 wherein the substrate comprises glass and the co-solvent comprises a high boiling alcohol.

25. A plasma display panel comprising:

a transmissive panel according to claim 1;

a gas space, and

a glass sheet separated from the transmissive panel by the gas space, wherein the textured antireflective surface of the polymer coating is proximate to the gas space.

19. A transmissive panel comprising:

a glass substrate;

a first thin-film stack forming an electromagnetic field filter on the glass substrate; and

a dyed polymer coating disposed on the first thin-film stack, the dyed polymer coating having a textured antireflective surface.

20. The transmissive panel of claim 19 further comprising a second thin-film stack disposed between the first thin-film stack and the dyed polymer coating.

21. The transmissive panel of claim 20 wherein the second thin-film stack is an index-matching structure.

22. The transmissive panel of claim 20 wherein the first thin-film stack includes

at least one moisture-sensitive layer, and

a plurality of voids formed by removing nodules from the first thin-film stack, the second thin-film stack sealing at least some of the plurality of voids.

23. A transmissive panel comprising:

a glass substrate;

a first thin-film stack forming an electromagnetic field filter on the glass substrate; and

a dyed polymer coating disposed on the first thin-film stack, the dyed polymer coating having a textured antireflective surface.

24. The transmissive panel of claim 23 further comprising a second thin-film stack forming a barrier overcoat on the first thin-film stack to seal voids left by removal of nodules from the first thin-film stack and to index-match the first thin-film stack to the dyed polymer coating.