This is a polyimide precursor varnish that can be used as a substrate material for OLED displays. By forming a film on base material and heating it, it becomes a polyimide film with low CTE, high heat resistance and good adhesion to glass.
As a material for backplanes that support the evolution of displays, it contributes to the realization of thinner, lighter and more flexible displays.
As a material for backplanes that support the evolution of displays, it contributes to the realization of thinner, lighter and more flexible displays.
Features
- High heat resistance
- High dimensional stability (equivalent to non-alkali glass)
- Flexibility
- Chemical resistance
- Particle control
- Grades can be set to suit your requirements
- Transparent varnishes are under development for a variety of applications
Characteristic
| Item | Unit | Characteristic value | Measurement method | |
|---|---|---|---|---|
| Film properties | Thermal expansion coefficient | ppm/K | <5 | Kaneka method |
| 1% Weight loss | ℃ | >560 | Kaneka method | |
| Tensile modulus | GPa | 9 | Kaneka method | |
| Tensile strength | MPa | 450 | Kaneka method | |
| Tensile elongation | % | 25 | Kaneka method | |
| Varnish properties | Viscosity | cps | 2,000~8,000 | Kaneka method |
| Solids concentration | wt% | 10~19 | Kaneka method |
Films based on Kaneka Polyimide Material are expected to have the above characteristics.
Film thickness = 10μm
These data are not guaranteed values but the typical measurement values at our company.
Film thickness = 10μm
These data are not guaranteed values but the typical measurement values at our company.
Application Examples
- TFT substrates (smartphones, smartwatches, etc.) for flexible OLED displays