Invention Grant
- Patent Title: Transparent conductive film roll and production method thereof, touch panel using the same, and non-contact surface resistance measuring device
- Patent Title (中): 透明导电膜卷及其制造方法,使用其的触摸屏,以及非接触表面电阻测定装置
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Application No.: US12212177Application Date: 2008-09-17
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Publication No.: US07812623B2Publication Date: 2010-10-12
- Inventor: Toshiyuki Oya , Hideo Murakami , Chikao Morishige , Yuji Kakita , Hideki Jinbou , Kenjiro Ueda , Takahiro Kubota
- Applicant: Toshiyuki Oya , Hideo Murakami , Chikao Morishige , Yuji Kakita , Hideki Jinbou , Kenjiro Ueda , Takahiro Kubota
- Applicant Address: JP Osaka-Shi
- Assignee: Toyo Boseki Kabushiki Kaisha
- Current Assignee: Toyo Boseki Kabushiki Kaisha
- Current Assignee Address: JP Osaka-Shi
- Agency: Kenyon & Kenyon LLP
- Priority: JP2001-188556 20010621; JP2001-319735 20011017
- Main IPC: G01R31/302
- IPC: G01R31/302

Abstract:
A transparent conductive film roll which has a transparent conductive layer on at least one surface thereof and has an excellent distribution uniformity of surface resistance in longitudinal and lateral directions thereof wherein the distribution uniformity D of surface resistance defined by the following expression (1) is 0.2 or less when the surface resistance of the transparent conductive layer is measured at a total of 33 points within the film roll, and therefore, is suitable especially for a large panel, D=(Rmax−Rmin)/(Rmax+Rmin) (1) where Rmax and Rmin represent the maximum and minimum values of 33 surface resistance measurement values.
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