# WIA-SEMI-011: Flexible Display Specification

## Version 1.0 | 2025

### Scope
This specification defines requirements for flexible displays including foldable, rollable, and stretchable types.

### Normative References
- IEC 62715-6-2: Flexible displays - Foldable
- JESD22-A104: Mechanical Shock
- MIL-STD-810H: Environmental Engineering

### Classification
**Type 1: Foldable**
- Bend radius: 1.5-5mm
- Fold cycles: ≥200,000

**Type 2: Rollable**
- Bend radius: 2-8mm
- Roll cycles: ≥100,000

**Type 3: Stretchable**
- Strain: 20-50% biaxial
- Cycles: ≥100,000

### Mechanical Requirements
- Bend radius: <3mm (Type A), <5mm (Type B)
- Fold cycles: 200,000 minimum, 300,000 premium
- Crease depth: <0.5mm after 200K cycles
- Hinge torque: 0.2-2.0 N·m (±25% variation allowed)

### Optical Requirements
- Luminance: ≥400 cd/m² peak white
- Uniformity: ≥85% (9-point measurement)
- Color gamut: ≥90% DCI-P3 or ≥100% sRGB
- Contrast: ≥5,000:1 (OLED), ≥1,000:1 (LCD)
- Response time: <10ms gray-to-gray

### Environmental Requirements
- Operating temperature: -10°C to +50°C
- Storage temperature: -20°C to +60°C
- Humidity: 10-90% RH non-condensing
- Thermal shock: 30 cycles (-20°C to +60°C)

### Testing Procedures
Detailed in WIA-SEMI-011-testing.md

© 2025 WIA | 弘益人間

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