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Title:
OPTICAL FILM AND ANTIREFLECTION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JP2007164166
Kind Code:
A
Abstract:

To provide an optical film, an antireflection film in particular, which produces no stripe of an equal pitch, is excellent in antireflection characteristic and produces no fading of a screen and further to provide a polarizing plate and an image display device which are equipped with the optical film or the antireflection film and are of high grade.

An edge face 16 of an application head 14 is pressed to a continuously running web 12 and a plurality of application solutions supplied into the application head 14 are ejected from respective slits 30 to perform multi-layer application by wet-on-wet onto the web 12. Thus the optical film in which capillary number Ca of the lower formula (1) is 0.1≤Ca≤ 4 and a fluorine compound is contained in at least one layer, is formed. The antireflection film, the polarizing plate and the image display device equipped with the optical film are also provided. The formula (1) is shown by Ca=Uμ/σ, wherein U is travel speed of the web [m/second], μ is average high share viscosity of a plurality of application solutions [Pa second], σ is surface tension of an uppermost layer application solution among multi-layer application layers [N/m].


Inventors:
Suzuki, Takato
Application Number:
JP2006000312925
Publication Date:
June 28, 2007
Filing Date:
November 20, 2006
Export Citation:
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Assignee:
FUJIFILM CORP
International Classes:
G02B1/11; B32B7/02; G02B5/30; G02F1/1335
Domestic Patent References:
JP2004138662A2004-05-13
JP2002086050A2002-03-26
JP2005257786A2005-09-22
Foreign References:
WO2005033752A12005-04-14
Attorney, Agent or Firm:
小栗 昌平
本多 弘徳
市川 利光
高松 猛
矢澤 清純