Nok Corporation
Nok Transparent FPC
Manufacturer: Nok.
Features
- Highly transparent material transparent PI (polyimide) is adopted.
- Since it is made of transparent polyimide with excellent heat resistance, it can be mounted on parts.
- It has excellent flexibility and can be used for bending when embedded in a housing.
Specifications
| Item | Units | PET (Polyethylene Terephthalate) | PEN (Polyethylene Naphthalate) | Transparent PI (Polyimide) |
|---|---|---|---|---|
| Heat resistance | ||||
| Melting point | °C | 225 | 269 | — |
| Tg (DMA) | °C | 122 | 157 | 300 |
| Water absorption | ||||
| Water absorb rate | % | 0.2 | 0.5 | 1.6 |
| Humidity expansion rate | ppm/%RH | 10 | 10 | — |
| Water absorption and dielectric properties | ||||
| Dk (10GHz) | — | 3.3 (1MHz) | 3.3 | 3.4 |
| Df (10GHz) | — | 0.010 (1MHz) | 0.004 | 0.009 |
| Transparency (50 μm thickness) | ||||
| Transmittance | % | 89 | 82 | 88 |
| Haze | % | 2 | 14 | 1.6 |
