Transparent conductive film roll and production method thereof, touch panel using it, and non-contact surface resistance measuring device
US7436190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2002 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/263
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.