12inch Sapphire Wafer C-Plane SSP/DSP
Introduce of wafer box
The production of 12-inch sapphire wafers is a complex and specialized process. Here are some key steps involved in the production of 12-inch sapphire wafers:
Seed Crystal Preparation: The first step is to prepare a seed crystal, which acts as a template for growing the single crystal sapphire. The seed crystal is carefully shaped and polished to ensure proper alignment and surface smoothness.
Aluminum Oxide Melting: High-purity aluminum oxide (Al2O3) is melted in a crucible. The crucible is typically made of platinum or other inert materials that can withstand high temperatures.
Crystal Growth: The melted aluminum oxide is then seeded with the prepared seed crystal and slowly cooled down while maintaining a controlled atmosphere. This process allows the sapphire crystal to grow layer by layer, forming a single crystal ingot.
Ingot Shaping: Once the crystal has grown to the desired size, it is removed from the crucible and shaped into a cylindrical boule. The boule is then carefully sliced into thin wafers.
Wafer Processing: The sliced wafers are subjected to various processes to achieve the desired thickness, surface finish, and quality. This includes lapping, polishing, and chemical-mechanical planarization (CMP) to remove surface defects and achieve the required flatness and smoothness.
Cleaning and Inspection: The processed wafers undergo thorough cleaning to remove any contaminants. They are then inspected for defects such as cracks, scratches, and impurities.
Packaging and Shipment: Finally, the inspected wafers are packaged and prepared for shipment to customers, usually in wafer carriers that provide protection during transportation.
It is important to note that the production of 12-inch sapphire wafers may require specialized equipment and facilities as compared to smaller wafer sizes. The process may also involve advanced techniques such as edge exclusion and stress management to ensure the integrity and quality of the larger wafers.
If you have a need for sapphire substrates, please feel free to contact：
mail：eric@xkh-semitech.com +86 158 0194 2596 /doris@xkh-semitech.com +86 187 0175 6522
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