Light transmitting hard coat film for use in touch panels

Details Light transmitting hard coat film for use in touch panels Light transmitting hard coat film for use in touch panels

2007-05-01

2007-05-01

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S215000, C428S328000, C428S331000, C428S451000, C428S697000, C428S699000, C428S701000, C428S702000

Reexamination Certificate

active

10713209

ABSTRACT:
The present invention provides a light transmitting hard coat film for use in touch panels, which comprises: (A) a light transmitting hard coat layer composed of a cured product of an ionizing-radiation-curable compound; (B) a high refractive index layer composed of a cured product of an ionizing-radiation-curable compound and containing antimony-doped tin oxide plus zirconium oxide and/or titanium oxide, as metal oxides, which has a refractive index in the range of 1.65 to 1.90 and a thickness of 30 to 160 nm; and (C) a low refractive index layer composed of a cured product of a siloxane-based curable compound which has a refractive index in the range of 1.40 to 1.55 and a thickness of 10 to 50 nm, all the layers being laminated on one side of a light transmitting base film in this order. The light transmitting hard coat film for use in touch panels has a high light transmittance and can produce transmitted light of blue color.

REFERENCES:
patent: 5472798 (1995-12-01), Kumazawa et al.
patent: 6773835 (2004-08-01), Shoshi et al.
patent: 2002/0127408 (2002-09-01), Nishida et al.

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