PET Diffusion Film
Product Name: PET Diffusion Film
Material Composition: PET + Diffusion Coating
Dimensions: Customizable
Shape: Customizable
Advantages:
Light Uniformization:
Anti-glare and Soft Light Output
Expanded Viewing Angle
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Rina Technology Co., Ltd. is one of the leading manufacturers and suppliers of pet diffusion film in China. Welcome to wholesale durable products in stock here and get quotation from our factory. All customized products are with high quality and low price.
Products Description
I. Introduction to PET Diffusion Film
PET Diffusion Film is an optical film based on an optical-grade polyester (PET) substrate, featuring diffusion particles and functional coatings applied to its surface through a precision coating process.
Its core principle lies in harnessing the multiple refraction, reflection, and scattering effects that occur as light traverses media with varying refractive indices, thereby transforming concentrated point or line light sources into soft, uniform surface light sources.
As a critical optical component in backlight modules and planar lighting systems, PET Diffusion Film offers a combination of high light transmittance, excellent haze characteristics, and dimensional stability.
RINA TECH has introduced a series of PET Diffusion Film products capable of precisely balancing light uniformity with light utilization efficiency, making them suitable for a diverse range of applications, including LCD displays and LED lighting.
II. Functions of PET Diffusion Film
Light Uniformization:
PET Diffusion Film efficiently diffuses the concentrated light emitted by LED beads and light guide plates, eliminating screen hotspots, light patches, and dark zones. This ensures a high degree of uniformity in both brightness and chromaticity across the light-emitting surface, thereby providing a pristine light source foundation for display panels.
Anti-Glare and Soft Light Output:
Through the synergistic interaction of surface microstructures and internal diffusion particles, PET Diffusion Film enhances light haze and mitigates the harshness of direct light. This results in softer illumination, safeguarding visual comfort for the human eye.
Expanded Viewing Angle:
By redirecting light propagation, the film widens the light-emitting angle of the backlight module. This improves clarity in the peripheral viewing zones of the display, preventing issues such as dimness or color distortion when viewed from the side.
Concealment of Optical Defects:
It effectively conceals the dot patterns of light guide plates, the outlines of LED beads, and structural imperfections within the module, ensuring that the final display output remains free of visual artifacts or light leakage.
III. Structural Composition of PET Diffusion Film
The PET Diffusion Film employs a three-layer composite structure, wherein each layer serves a precisely defined function to ensure stable optical and physical performance:
Bottom Layer (Scratch-Resistant & Abrasion-Resistant): Approximately 2–5 μm in thickness, this layer is primarily composed of silicone and polyurethane resins, supplemented with abrasion-resistant micro-particles.
Middle Layer (PET Substrate): Serving as the core support layer, this component utilizes a 50–188 μm bi-axially oriented optical-grade PET film. With a light transmittance of ≥90% and a thermal shrinkage rate of ≤1.0%, it exhibits high mechanical strength, exceptional dimensional stability, and excellent thermal resistance, thereby serving as the fundamental foundation for the diffusion film's optical performance.
Top Layer (Light Diffusion Layer): This core functional layer is formed by coating a uniform mixture of acrylic/polyurethane binders and diffusion particles-which may be organic (e.g., PMMA, acrylic resins) or inorganic (e.g., silicon dioxide, calcium carbonate). The diffusion particles range in size from 1 to 10 μm; through precise formulation control, this layer achieves highly efficient light scattering while simultaneously maintaining high light transmittance.
RINA TECHNOLOGY
is a high-tech enterprise specializing in research, development, production ,sales of Optical LED products and provide the one step optical lighting solution for customers.Established in 2011, Hong Kong, after years of rapid development, Rina Tech has settled office and factory in Shenzhen,and has professional senior technicians and qualified managers,has a talented team for product research and designing.
Nowadays, we have laser cutting machines, printers, film cutting machines, injection molding equipments,high-standard assembly workshops, BM-7 clean machines and other advanced equipments.
Our factory daily output is more than 80000pcs. to cater for the market at home and abroad.With years of unremitting effort,RINA TECH has passed get the Registration Certificate ofCustoms Declaration Unit of the People's Republic of China , National Credit Cultivation Certificate and Get our own Brand already.
We has made many breakthroughs in researching and manufacturing and has
obtained lots of good reputation from oversea customers.
Now we has cooperated with and become strategic partner of some famous enterprises such as LG, Samsung, Lenovo etc."Living on Sincerity, following with Market, Advancing by Specialty" is our eternal philosophy,and the company motto is "Good at Production, Good for Society".
We look forward to cooperating with you to make the world better and future brighter!
FAQ
Q1: What is the difference between PET Diffusion Film and PC Diffusion Film?
A: PET Diffusion Film uses PET as its base material; it offers excellent cost-effectiveness, superior light transmittance, and good dimensional stability, making it the mainstream choice for consumer electronics and general lighting applications. PC Diffusion Film, on the other hand, possesses stronger impact resistance and thermal stability, making it more suitable for demanding environments such as automotive displays and industrial instrumentation.
Q2: How do I select the appropriate PET Diffusion Film model?
A: The key factors to consider are haze and light transmittance: For display applications, high light transmittance (≥88%) combined with medium haze (40%–70%) is required. For lighting applications, options featuring high haze (70%–90%) and medium light transmittance are typically preferred. RINA TECH offers a comprehensive range of customizable PET Diffusion Films, allowing parameters to be precisely matched to the specific application scenario.
Q3: Does the thickness of the PET Diffusion Film affect its performance?
A: Thickness primarily influences mechanical strength and compatibility with the module assembly: For standard display applications, a thickness of 75–125μm strikes an optimal balance between toughness and slimness. For ultra-thin devices, 50μm is recommended; conversely, for lighting applications, a thicker 188μm variant is available to provide enhanced stability.
Q4: What is the operating temperature range for PET Diffusion Film?
A: Standard products can withstand long-term temperatures ranging from -20°C to 85°C, with short-term tolerance up to 105°C. RINA TECH also offers high-temperature-resistant PET Diffusion Films capable of operating in environments up to 120°C, thereby meeting the rigorous demands of automotive and industrial high-temperature settings.
Q5: Can PET Diffusion Film be die-cut to custom dimensions?
A: Yes. PET Diffusion Film exhibits excellent die-cutting properties and can be cut to any specific size or shape required. RINA TECH provides precision die-cutting and slitting services to ensure compatibility with the dimensions of various backlight units and lighting modules.
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