Transparent PI + UTG Composite Cover Window
( 95 mm Low-Crease, Shatter-Resistant Solution )
UTG Applications in Composite Cover Window: Enhanced Performance
Providing Thinner, More Resilient, and Better User Experience Flexible Display Options
Low Crease × Tear-Resistant × Thinner Foldable Screen Material
Crease-Free Next-Generation Foldable Cover Window
Microcosm Technology introduces its latest-generation Transparent PI + UTG Composite Cover Window, with a total thickness of only 95 μm (Transparent PI 45 μm + UTG 50 μm).
Compared with the PET + UTG reference sample evaluated under the same test method, this design showed a nearly 40% reduction in overall thickness.
- Ultra-low crease depth: 3–8 μm (almost invisible to the naked eye)
- Stylus drop impact resistance: up to 45 cm
- 2,500-cycle steel wool scratch resistance
- 200,000 dynamic bending cycles at 85°C / 85% RH with no cracks
This solution is designed for 2025–2026 next-generation foldable smartphones, foldable laptops, and automotive curved displays that require thin form factors and reduced crease visibility.
Common Challenges and Limitations
As modern transparent display technologies continue to evolve rapidly, material requirements in the market are becoming increasingly stringent:
- Visible creases that degrade user experience and brand perception
- Insufficient impact resistance in flexible cover window materials
- PET + UTG stacks are difficult to thin further, limiting overall device slimness
- Constraints on bending radius and cycle life, reducing design freedom and product lifespan
We understand these challenges deeply. Over the past five years, we have worked closely with leading foldable smartphone brands to address them, and have successfully completed impact resistance, crease resistance, and bending reliability tests.
Product Application Scenario
| Feature | Description | Product Values |
|---|---|---|
| Ultra-thin thickness | Only 95μm（nearly 40% thinner） | Slimmer device profile, larger battery capacity, greater design flexibility |
| Virtually crease-free | Crease depth only 3–8 μm, almost imperceptible | Improved visual performance |
| Excellent impact resistance | Withstands a 45 cm pen drop without damage | Improved product durability |
| High-temperature & high-humidity folding durability | Under the specified bending test conditions, no cracking was observed after 200,000 cycles at 85°C / 85% RH. Test radius, frequency and acceptance criteria are defined in the corresponding test report. | Documented durability data for product datasheets |
| Superior surface hardness & scratch resistance | 2,500 steel wool cycles with no visible damage | Supports everyday durability |
Why Choose Us?
See the Product Comparison
| Foldable Device Challenge | Microcosm Transparent PI + UTG Composite Cover Window | PET + UTG reference sample |
|---|---|---|
| Total Thickness | 95 μm (Composite cover 45 μm + UTG 50 μm) | 155μm（PET55μm + UTG50μm） |
| Pen Drop Height | 45cm | 33cm |
| Crease Depth | 3~8μm | Approx. 20μm |
| Thickness Reduction Capability | Enables thickness reduction to below 50% | Limited thinning capability |
The Optimal Solution
The Optimal Solution
The Microcosm solution delivers thinner profiles, lower crease visibility, and greater durability for next-generation flexible display materials.
Product Application Structure
