Black and Opaque Polyimide Film (PIB) - for Uniform Light Blocking and Electrical Insulation

Product Description:

Black & Opaque Polyimide Film PIB is a high-performance, non-transparent polyimide film specifically engineered for applications requiring complete light blocking, uniform black appearance, and extreme electrical, thermal, and chemical resistance.  PIB effectively prevents light leakage while maintaining the outstanding electrical insulation, mechanical strength, and flexibility expected from premium polyimide materials.  

Besides, PIB offers excellent resistance to heat, chemicals, and atomic radiation, making it a reliable insulation solution for demanding environments such as satellite systems, flexible electronic assemblies, ADAS Camera & LiDAR, and CMOS image sensor.  With its balanced combination of durability, flexibility, and insulation performance, PIB is an ideal choice for for applications where uncontrolled light, thermal disturbance, and long-term reliability directly impact system performance.

Key Features & Performance:

1. Deep Black Glossy Surface : Consistent color for functional and aesthetic designs.
   
2. Light Transmission 0% : Excellent light-blocking / Optical Isolation.
3. High Heat Resistance: Improved Thermal Stability → Stable Output.
4. Excellent Surface Integrity : Precision Masking Capability and enhanced System Reliability.
5. High Dielectric Strength : Stable dielectric performance for medium-voltage and signal-level applications.
6. Outstanding Electrical, and Chemical Resistance.
7. Flexible & Durable: Maintains mechanical integrity under bending and stress.

Design Challenges in Light-Blocking & Insulation Systems

Engineers specifying black insulating films frequently encounter:

• Non-uniform black appearance causing inconsistent light absorption

• Residual light leakage through thin or uneven regions

• Electrical insulation degradation under long-term operation

• Trade-offs between opacity, film thickness, and dielectric strength

• Variability between production lots affecting system consistency

In practice, optical reliability and electrical safety often depend on material uniformity, not just nominal specifications.

Our Black Polyimide Film (PIB) Approach 

PIB is engineered as a functionally uniform black polyimide film, addressing optical and electrical requirements at the material level, featuring:

• Effective Light Blocking & Stray Light Suppression
  Ensuring consistent light absorption and minimizing stray light reflection

• High dielectric strength
  Providing reliable electrical insulation for electronic systems

• Balanced Performance for Optoelectronic Systems
  Delivers light blocking, electrical insulation, and mechanical flexibility

• Stable PI base material
  Maintaining insulation and optical performance under thermal, chemical, and environmental stress

Unlike generic black films or coated materials, PIB is designed to deliver predictable and repeatable optical and electrical behavior.

Available Sizes:      

•  Film Thickness： 25µm, 50µm, 75µm, 100µm, 125µm, 150µm
•  Roll Width： 250mm, 520mm

Typical Applications:

1. LCD Backlight Module & Touch Panel.
2. Flexible FPC Coverlay.
3. Automotive Displays: Center stack, instrument cluster, and curved displays.
4. Advanced Human-Machine Interfaces (HMI): Automotive and smart device interfaces.
5. Sensor Integration Zones: IR, proximity, and ambient light sensor areas.
6. Wire and Cable (W&C)
7. X-ray Screen

Application Case: 

I. Black PI Film PIB for Automotive Touch Panels

PIB is a glossy black polyimide film applied as a functional masking layer within automotive touch panels. It enables precise light blocking, clean UI integration, and stable system performance while remaining hidden beneath the surface.

Designing systems requiring reliable light blocking and electrical insulation?

Contact us to discuss Black & Opaque Polyimide Film (PIB) solutions tailored for your optical sensitivity, insulation requirements, and integration constraints.