Product Details
Place of Origin: CHINA
Brand Name: ZMSH
Certification: rohs
Model Number: Patterned Sapphire Substrate (PSS)
Payment & Shipping Terms
Minimum Order Quantity: 25
Price: by case
Packaging Details: Single wafer package in 100-grade cleaning room
Delivery Time: 2-4weeks
Payment Terms: T/T
Item:: |
Patterned Sapphire Substrate |
Size:: |
2inch, 4inch, 6inch |
Front Surface Finish:: |
Patterned |
Back Surface Finish:: |
SSP:Fine-ground,Ra=0.8-1.2um; DSP:Epi-polished,Ra<0.3nm |
Laser Mark:: |
Back Side |
Edge Exclusion:: |
≤2 Mm |
Customization:: |
Sapphire PSS Of Various Orientations; Nanometer Patterned Sapphire Substrate（NPSS） |
Application:: |
Light Emitting Diodes (LEDs) |
Item:: |
Patterned Sapphire Substrate |
Size:: |
2inch, 4inch, 6inch |
Front Surface Finish:: |
Patterned |
Back Surface Finish:: |
SSP:Fine-ground,Ra=0.8-1.2um; DSP:Epi-polished,Ra<0.3nm |
Laser Mark:: |
Back Side |
Edge Exclusion:: |
≤2 Mm |
Customization:: |
Sapphire PSS Of Various Orientations; Nanometer Patterned Sapphire Substrate（NPSS） |
Application:: |
Light Emitting Diodes (LEDs) |
Patterned sapphire substrate (PSS) is a substrate on which micro and nano structures are formed by lithography and etching techniques. It is mainly used in LED (light emitting diode) manufacturing to improve light extraction efficiency through surface patterning design, thereby improving the brightness and performance of LED.
Patterned sapphire substrate(PSS) is a process of making some specific micrometer pattern like Dome,Cone or Pyramid-shaped on the sapphire substrate.Uneven patterns on sapphire substrates can generate light scattering or refraction,thereby improving the luminous efficiency.
|
Crystal Structure |
Hexagonal |
|
Lattice Constant(nm) |
a=4.76Å c=12.99Å |
|
Density(g/cm3) |
3.98 |
|
Melting point(℃) |
2040 |
|
Mohs Hardness(mohs) |
9 |
|
Dielectric Constant |
9.3(A plane) 11.5(C plane) |
|
Thermal Conductivity(W/cm.K) |
0.46 |
|
Thermal Expansion |
6.7*10-6/k(C plane) 5.0*10-6/k(A plane) |
|
Refractive Index |
1.762-1.777 |
|
Transmission |
Test sample:Sapphire:D76.2*4mm |
|
UV:200~380nm 74%~84% |
|
|
Visible light:380~760nm 85% |
|
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Infrared:760~1000nm 85% |
|
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Far-Infrared:>1000nm 80%~100% |
- Material characteristics: The substrate material is single crystal sapphire (Al₂O₃), which has high hardness, high heat resistance and chemical stability.
- Surface structure: The surface is lithographed and etched to form periodic micro-nano structures, such as cones, pyramids or hexagonal arrays.
- Optical properties: Through the surface patterning design, the total reflection of light at the interface is reduced and the efficiency of light extraction is improved.
- Thermal performance: Sapphire substrate has excellent thermal conductivity and is suitable for high power LED applications.
- Size specification: Common sizes are 2 inches (50.8mm), 4 inches (100mm), and 6 inches (150mm).
|
Item |
Patterned Sapphire Substrate(2~6inch) |
||
|
Diameter |
50.8 ± 0.1 mm |
100.0 ± 0.2 mm |
150.0 ± 0.3 mm |
|
Thickness |
430 ± 25μm |
650 ± 25μm |
1000 ± 25μm |
|
Surface Orientation |
C-plane (0001) off-angle toward M-axis (10-10) 0.2 ± 0.1° |
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C-plane (0001) off-angle toward A-axis (11-20) 0 ± 0.1° |
|||
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Primary Flat Orientation |
A-Plane (11-20) ± 1.0° |
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Primary Flat Length |
16.0 ± 1.0 mm |
30.0 ± 1.0 mm |
47.5 ± 2.0 mm |
|
R-Plane |
9-o'clock |
||
|
Front Surface Finish |
Patterned |
||
|
Back Surface Finish |
SSP:Fine-ground,Ra=0.8-1.2um; DSP:Epi-polished,Ra<0.3nm |
||
|
Laser Mark |
Back side |
||
|
TTV |
≤8μm |
≤10μm |
≤20μm |
|
BOW |
≤10μm |
≤15μm |
≤25μm |
|
WARP |
≤12μm |
≤20μm |
≤30μm |
|
Edge Exclusion |
≤2 mm |
||
|
Pattern Specification |
Shape Structure |
Dome, Cone,Pyramid |
|
|
Pattern Height |
1.6~1.8μm |
||
|
Pattern Diameter |
2.75~2.85μm |
||
|
Pattern Space |
0.1~0.3μm |
||
Customization specifications:
* Nanometer patterned sapphire substrate(NPSS).
* Sapphire PSS of various orientations.
· Highlight extraction efficiency: The surface patterning design reduces light loss and significantly improves the luminous efficiency of leds.
· Excellent material properties: Sapphire substrate has high hardness, high temperature resistance and chemical stability, suitable for harsh process environments.
· Strong compatibility: High lattice matching with GaN (Gallium nitride) epitaxy layer, suitable for high-quality epitaxy growth.
· Long life and high reliability: Sapphire substrate is resistant to wear and corrosion, extending the service life of the device.
· Environmental protection and energy saving: Improve LED efficiency, reduce energy consumption, in line with the green manufacturing trend.
1.Q: What role does patterned sapphire substrate (PSS) play in LED manufacturing?
A: PSS reduces light loss through the surface micro-nano structure and improves light extraction efficiency, thus significantly improving the brightness and luminous efficiency of LED.
2.Q: What are the advantages of patterned sapphire substrate (PSS)?
A: PSS has high light extraction efficiency, excellent heat resistance and chemical stability, and good compatibility with GaN epitaxial layer, suitable for high-performance LED manufacturing.
Tag: #Patterned Sapphire Substrate (PSS), #Sapphire wafer, #Flat Sapphire Substrates, #Hardness 9.0, #PSS,#NPSS, #Light Emitting Diodes (LEDs), #LED manufacturing, #GaN-based power devices, #Single Crystal Sapphire Al₂O₃
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