Kaneka Transparent Polyimide Film is a glass substitute film that has the characteristics of glass, such as transparency, heat resistance, dimensional stability, and electrical properties, while adding the flexibility (bending resistance) and lightness of film. In particular, the use of this film is particularly popular in Foldable smartphones.
Features
- Transparency: Colorless and transparent polyimide film is realized by optimizing the material design of our polyimide and the manufacturing process of the optical films
- Bending resistance: No breakage or cracking even after repeated bending
- Heat resistance: Both transparency and high heat resistance are achieved, making it possible to apply to applications that require high temperature processing
- Low dielectric constant: Relative dielectric constant 2.9 (@10GPa)
Characteristic
| Item | Unit | Characteristic value | Measurement method | |
|---|---|---|---|---|
| Thickness | μm | 50 | Contact type thickness gauge | |
| Optical properties | Total light transmittance | % | 88 | JIS K7361-1 |
| Haze | % | 0.4 | JIS K7136 | |
| YI | ー | 1 | JIS K7373 | |
| Mechanical properties | Flexibility | times | >100,000 | Bending radius 1mm Kaneka method |
| Thermal properties | Glass transition temperature Tg | ℃ | 300 | DMA |
| Electrical properties | Volume resistivity | Ω・cm | >1016 | 100V,23℃ |
These data are not guaranteed values
but the typical measurement values at our company.
but the typical measurement values at our company.
Applications
- Cover window (Foldable display)
- Touch panel
- Heat-resistant and insulating substrates and films