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Title:
TRANSPARENT FILM, METHOD FOR USING THE SAME, AND TOUCH PANEL
Document Type and Number:
Japanese Patent JP2014097649
Kind Code:
A
Abstract:

To provide a transparent film for a display which, when used in a pen input type touch panel, can give an input touch similar to writing on paper with a pencil.

The transparent film includes a transparent substrate film and a coating layer formed on at least one surface of the transparent substrate film, in which the total light transmittance of the film is adjusted to at least 85% in accordance with JIS K7136, and the surface profile of the coating layer is adjusted to a maximum height of rolling circle waviness profile (WEM) of at least 15 μm in accordance with JIS B0610. The transparent film is disposed on the outermost surface of a display in a pen input-type touch panel. The coating layer may contain microparticles and a binder component. The average particle diameter of the microparticles may be 1 to about 5 times the thickness of the coating layer. The binder component may further contain a thermoplastic elastomer.


Inventors:
YOKOYAMA AYA
ITO HISAYOSHI
Application Number:
JP2013002034A
Publication Date:
May 29, 2014
Filing Date:
January 09, 2013
Export Citation:
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Assignee:
DAICEL CORP
International Classes:
B32B7/02; B32B27/00; C08J7/043; C08J7/046; G06F3/041
Domestic Patent References:
JP2004240548A2004-08-26
JPH09230985A1997-09-05
JPH07253504A1995-10-03
JPH06309090A1994-11-04
Foreign References:
WO2003067416A12003-08-14
Attorney, Agent or Firm:
Mitsuo Kata
Hiroshi Sanaka