Claims
- 1. An electrophoretic display fluid comprising charged pigment particles dispersed in a mixture comprising a perfluoropolyether and a hydrofluoropolyether.
- 2. The display fluid of claim 1 wherein said perfluoropolyether is a homopolymer of trifluoro(trifluoromethyl)oxirane.
- 3. The display fluid of claim 1 wherein said perfluoropolyether is selected from Dupont K series or Solvay Solexis HT series.
- 4. The display fluid of claim 3 wherein said perfluoropolyether is selected from Solvay Solexis HT170, HT200, HT230 and Dupont K6 and K7.
- 5. The display fluid of claim 1 wherein said hydrofluoropolyether is selected from Solvay Solexis ZT series.
- 6. The display fluid of claim 5 wherein said hydrofluoropolyether is Solvay Solexis ZT180.
- 7. The display fluid of claim 1 wherein said mixture has a weight ratio of hydrofluoropolyethers to perfluoropolyethers from about 2/98 to about 98/2.
- 8. The display fluid of claim 7 wherein said ratio is from about 5/95 to about 50/50.
- 9. The display fluid of claim 8 wherein said ratio is from about 8/92 to about 30/70.
- 10. The display fluid of claim 1 wherein said pigment particles are primary pigment particles or pigment-containing microcapsules or microparticles.
- 11. The display fluid of claim 10 wherein said pigment is TiO2, ZnO, or BaSO4.
- 12. The display fluid of claim 1 wherein said solvent mixture comprises a mixture of a Si phthalocyanine or naphthalocyanine dye and a Cu phthalocyanine or naphthalocyanine dye dissolved therein.
- 13. The display fluid of claim 12 wherein said Si phthalocyanine dye is:
- 14. The display fluid of claim 13 wherein said Si phthalocyanine dye is:
- 15. The display fluid of claim 13 wherein said Si phthalocyanine dye is:
- 16. The display fluid of claim 13 wherein said Si phthalocyanine dye is:
- 17. The display fluid of claim 13 wherein said Si phthalocyanine dye is:
- 18. The display fluid of claim 13 wherein said Si phthalocyanine dye is:
- 19. The display fluid of claim 12 wherein said Si phthalocyanine dye is:
- 20. The display fluid of claim 12 wherein said Cu phthalocyanine dye is:
- 21. The display fluid of claim 20 wherein said Cu phthalocyanine dye is:
- 22. The display fluid of claim 12 wherein the weight ratio of the Si dye to the Cu dye is from about 1/10 to about 10/1.
- 23. The display fluid of claim 22 wherein said weight ratio of the Si dye to the Cu dye is from about 1/4 to about 4/1.
- 24. The display fluid of claim 23 wherein said weight ratio of the Si dye to the Cu dye is from about 1/2 to about 2/1.
- 25. An electrophoretic display comprising display cells filled with an electrophoretic display fluid comprising charged pigment particles dispersed in a mixture comprising a perfluoropolyethers and a hydrofluoropolyether.
- 26. The display fluid of claim 25 wherein said perfluoropolyether is a homopolymer of [trifluoro(trifluoromethyl)oxirane].
- 27. The display fluid of claim 25 wherein said perfluoropolyether is selected from Dupont K series or Solvay Solexis HT series.
- 28. The display fluid of claim 27 wherein said perfluoropolyether is selected from Solvay Solexis HT170, HT200, HT230 and Dupont K6 and K7.
- 29. The display fluid of claim 25 wherein said hydrofluoropolyether is selected from Solvay Solexis ZT series.
- 30. The display fluid of claim 29 wherein said hydrofluoropolyether is Solvay Solexis ZT180.
- 31. The display of claim 25 wherein said solvent mixture comprises a mixture of a Si phthalocyanine or naphthalocyanine dye and a Cu phthalocyanine or naphthalocyanine dye dissolved therein.
- 32. The display fluid of claim 31 wherein the weight ratio of the Si dye to the Cu dye is from about 1/10 to about 10/1.
- 33. The display fluid of claim 32 wherein said weight ratio of the Si dye to the Cu dye is from about 1/4 to about 4/1.
- 34. The display fluid of claim 33 wherein said weight ratio of the Si dye to the Cu dye is from about 1/2 to about 2/1.
- 35. The display of claim 25 which is a conventional partition type display, the display prepared by the microencapsulation process or the display prepared by the microcup technology.
RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional Application No. 60/411,854 filed Sep. 18, 2002, which is incorporated herein by reference in its entirety.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60411854 |
Sep 2002 |
US |