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 light blocking, uniform black appearance, and extreme 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, electronic assemblies, motor insulation, and flexible electronics.  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.

Design Challenge 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 & Opaque Polyimide Film (PIB) Approach 

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

• Uniform black surface appearance
  Ensuring consistent light absorption and minimizing stray light reflection

• Fully opaque film structure
  Effectively blocking stray and backside light in sensitive assemblies

• High dielectric strength
  Providing reliable electrical insulation for electronic systems

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

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

How Black & Opaque PI Film (PIB) Fits into System Design

PIB is typically integrated as:

• A light-blocking insulation layer in sensor and camera modules

• An optical isolation layer between electronic and optoelectronic components

• A protective insulating film where electrical safety and light control are required

By providing uniform opacity and high dielectric strength, PIB enables engineers to focus on system-level design without compensating for material inconsistencies.

Why Black & Opaque PI Film (PIB) Works : Engineering the Functional Role of PIB in Light-Sensitive Modules

Light & Noise Control Challenges in Light-Sensitive Modules

Stray light, internal reflections, and thermal coupling are major sources of optical noise and signal instability in light-sensitive electronic modules. These challenges become increasingly critical as modules shrink and performance requirements rise.

PIB as a Functional Isolation Solution

By integrating a black & opaque polyimide film (PIB), unwanted light is effectively blocked, thermal coupling is reduced, and system reliability is significantly improved.

Key Features & Performance:

1, Low Light Transmission: Excellent light-blocking / Optical Isolation.

2, Reduced Optical Noise.

3, High Heat Resistance: Improved Thermal Stability → Stable Output.

4, Enhanced System Reliability.

5, Uniform Black Appearance: Consistent color for functional and aesthetic designs.

6, High Dielectric Strength & Excellent Electrical Insulation.

7, Outstanding Chemical Resistance.

8, Flexible & Durable: Maintains mechanical integrity under bending and stress

Typical Applications:

1. Automotive ADAS / Camera Module.

2, Display & Optical Modules.

3, Thermal & Structural Black Layer.

4, Satellite blankets, Radiant heat absorber.

5. Automitive COMOS image sensor Light blocking & protection.

6. Wire and Cable (W&C)

Application Case: 

Available Sizes:      

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

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.