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6inch 8inch 4H-SEMI SiC Substrate for AR Glasses Optical Grade

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6inch 8inch 4H-SEMI SiC Substrate for AR Glasses Optical Grade

Grande immagine : 6inch 8inch 4H-SEMI SiC Substrate for AR Glasses Optical Grade

Dettagli:

Place of Origin:	CHINA
Marca:	ZMSH
Certificazione:	rohs
Model Number:	6inch 8inch 4H-SEMI SiC

Termini di pagamento e spedizione:

Minimum Order Quantity:	25pc
Prezzo:	by case
Packaging Details:	customzied plastic box
Delivery Time:	in 30days
Payment Terms:	T/T
Supply Ability:	1000pc/month

Contatto

Descrizione di prodotto dettagliata

Size:	6inch,8inch	Type:	4H-SEMI
Thickness a (Tropel):	500.0 µm ±25.0 µm	Refractive index a:	>2.6 @550nm
Haze a:	≤0.3%	Microtube density:	≤0.5/cm²
Notch orientation:	<1-100>±2°
Evidenziare:	6inch SiC substrate for AR glasses , 8inch optical grade SiC substrate , 4H-SEMI SiC substrate optical grade

6 Inch 8 Inch 4H-SEMI SiC Substrate Overview

Optical Grade 6inch 8inch 4H-SEMI Type SiC Substrate for AR Glasses

A revolutionary optical-grade 4H-SiC substrate designed specifically for AR glasses, grown via Physical Vapor Transport (PVT) and refined through nano-scale polishing and low-stress slicing. This product achieves the world’s first single-layer waveguide full-color display solution, addressing critical challenges in AR optics:

Ultra-High Refractive Index (n=2.619@750 nm): Outperforms traditional glass (1.5–1.9) and resin (1.4–1.7), enabling >80° field of view (FOV) with a thickness of only 0.55 mm and weight <2 g, eliminating the bulkiness and chromatic aberration of multi-layer glass solutions.
Thermal Conductivity of 490 W/m·K: Efficiently dissipates heat from high-power optical modules, ensuring stable performance during prolonged use.
Transmittance >95% (post-anti-reflective coating): Ultra-low absorption coefficient (α<0.5%/μm @550 nm) minimizes optical loss, enhancing brightness and contrast.

This substrate redefines lightweight, immersive AR experiences, driving the next generation of consumer-grade AR glasses.

6 Inch 8 Inch 4H-SEMI SiC Substrate Innovative Features

1. High Refractive Index with Low Dispersion

Technical Breakthrough: The 4H polytype (ABCABCB stacking sequence) achieves n=2.619@750 nm, compressing grating periods to 300 nm to suppress environmental light diffraction, reducing chromatic dispersion by 40%.
Application Value: Replaces traditional 3-layer glass waveguides with a single-layer SiC solution, reducing thickness by 80% and enabling compatibility with Micro LED micro-displays for high-resolution full-color rendering.

2. Ultra-Low Thermal Expansion Coefficient (CTE=3.7×10⁻⁶/K)

Technical Breakthrough: The 4H-SiC crystal structure ensures thermal stability, with CTE 1/3 that of glass, preventing warping and optical path shifts under thermal cycling.
Application Value: Operates reliably in -20–85°C environments, ideal for outdoor AR applications.

3. Nano-Scale Surface Flatness (Ra<0.2 nm)

Technical Breakthrough: Combines chemical mechanical polishing (CMP) and plasma etching to eliminate subsurface damage, achieving ±5 nm etching precision.
Application Value: Achieves 98% waveguide efficiency, minimizing light leakage.

4. Defect Density <0.04/cm² (8-inch)

Technical Breakthrough: Advanced liquid-phase growth (TSSG) reduces microtube density to <0.04/cm² and dislocation density to <1000/cm².
Application Value: Improves yield to >95%, lowering manufacturing costs.

5. Large-Scale 8-inch Production Capability

Technical Breakthrough: 8-inch wafers reduce edge waste by 7%, yielding 10–12 AR lenses per wafer.
Application Value: Reduces per-lens cost by 30–50%, accelerating mass-market adoption.

6 Inch 8 Inch 4H-SEMI SiC Substrate Applications

1. AR Lens Waveguides

Function: 6 inch 8 inch 4H-SEMI SiC substrate acts as a substrate for surface-relief grating waveguides (SRG), enabling full-color, high-resolution displays.
Advantage: Replaces multi-layer glass with a 0.55 mm-thin, <2 g lens, achieving FOV >80°.

2. Micro LED Display Modules

Function: 6 inch 8 inch 4H-SEMI SiC substrate serves as a carrier for mass transfer of Micro LEDs, enhancing brightness and contrast.
Advantage: High thermal conductivity (490 W/m·K) resolves Micro LED heat dissipation challenges, supporting >10,000 PPI pixel density.

3. AR Optical Stabilization Systems

Function: Integrates MEMS micromirror arrays for dynamic light path compensation.
Advantage: SiC’s mechanical strength (450 GPa Young’s modulus) and thermal resilience (-55–300°C) ensure reliability.

4. Smart Glasses Thermal Management

Function: 6 inch 8 inch 4H-SEMI SiC substrate provides heat dissipation support for AR chips (e.g., SoCs, laser drivers).
Advantage: Withstands >10 W/mm² transient power density, preventing thermal throttling.

6 Inch 4H-SEMI SiC Substrate Technical Parameter

Crystal parameters
Type	4H
Refractive index a	>2.6 @550nm
Absorptivity a	≤0.5% @450-650nm
MP transmittance a (without anti-reflection conditions)	≥66.5%
Haze a	≤0.3%
Polymorphism a	None permitted
Microtube density	≤0.5/cm²
Hexagonal void density	None permitted
Impurity Grain on Hexagonal a	None permitted
MP Inclusion a	None permitted
Mechanical parameters
Dia(inches)	6
Surface orientation	(0001)±0.3°
Notch reference edge	Notch
Notch orientation	<1-100>±2°
Notch angle	90±5°/1°
Notch depth	1 mm ±0.25 mm (-0 mm)
Surface treatment	C-Si side (CMP)
Wafer edge	Bevel
Surface roughness (AFM)	Ra≤0.2 nm (5×5 µm scan area)
Thickness a (Tropel)	500.0 µm ±25.0 µm
LTV (Tropel)	≤2 µm
TTV a (Tropel)	≤3 µm
Bow a (Tropel)	≤5 µm
Warp a (Tropel)	<15 µm

Recommend other type of SiC

1. dummy production Research Grade Silicon Carbide high purity 4h-semi un-doped transparent sic Wafer

2. HPSI High Purity Semi-insulating SiC Wafers 2"3"4"6" 8" Prime/Dummy/Research Grade

6 Inch 8 Inch 4H-SEMI SiC Substrate FAQ

1. Q: What are the key advantages of SiC substrates for AR glasses?

A: High refractive index (n=2.619@750nm) enables ultra-thin single-layer waveguides (<0.55mm) with >80° FOV, eliminating rainbow effects and weight issues in traditional glass solutions.

2. Q: Why choose 4H-SEMI type SiC substrates over other polytypes?

A: 4H-SiC offers superior thermal stability (CTE=3.7×10⁻⁶/K) and defect density <0.04/cm² (8-inch), ensuring reliability in high-power optical systems and mass production scalability.

Tag: #Silicon carbide substrate, #6inch, #8inch, #Semiconductor materials, #4H-SEMI SiC, #Product Grade, #5G Communications, # AR Glasses, #MOS Grade, #4H-SiC Substrates,#Optical Grade

Prodotto Tag:

Persona di contatto: Mr. Wang

Telefono: +8615801942596

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