Optical sheet and process for production of the same

Details Optical sheet and process for production of the same Optical sheet and process for production of the same

2005-01-11

2005-01-11

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

C428S325000, C428S327000, C428S343000, C428S352000, C427S164000

Reexamination Certificate

active

06841237

ABSTRACT:
The invention provides an optical sheet having and sufficiently exhibiting high light transparency and uniform light diffusivity. The optical sheet comprises transparent resin layers2and3and a fine particle layer5consisting of transparent fine particles4which are arranged as a monoparticle layer between the transparent resin layers2and3in an embedded state, wherein the refractive indexes of said transparent resin layers are different from that of said transparent fine particle. The optical sheet is produced by a process which comprises at least a step of forming a transparent resin layer having at least temporary stickiness on a substrate, a step of forming a fine particle layer by covering said transparent resin layer with transparent fine particles so as to form a monoparticle layer and fixing them, and a step of laminating a transparent resin layer on said fine particle layer.

REFERENCES:
patent: 5169707 (1992-12-01), Faykish et al.
patent: 5988822 (1999-11-01), Abe et al.
patent: 6383558 (2002-05-01), Fujiwara et al.
patent: 6558009 (2003-05-01), Hannington et al.
patent: 6692647 (2004-02-01), Moshrefzadeh et al.
patent: 2001-026061 (2001-01-01), None

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