Sapphire Substrate Processing Flow

Sapphire Substrate Processing Flow

1. Growing: The single sapphire crystal with large size and high quality is grown in the crystal growth furnace.

2. Orientation: Ensure the sapphire crystal in the correct position on the cutting machine, so as to facilitate the cut processing;

3. Take out the rod: Take out the sapphire rod from the sapphire crystal in a specific way (including head and tail removal and end face grinding);

4. Rolling grinding: The cylindrical grinding of the crystal rod is carried out with an external grinder to obtain the accurate cylindrical dimension accuracy (rolling, grinding of the surface);

5. Quality inspection: To ensure that the quality of the sapphire rod and the size and orientation of the inserted sapphire rod meet the customer's specifications;

6. Orientation: Accurately locate the position of sapphire crystal rod on the slicing machine, so as to facilitate the precise slicing process;

7. Slicing: Use diamond wire saw to cut the sapphire crystal rod into thin wafers;

8. Grinding: Remove the chip cutting damage layer caused by slicing and improve the flatness of the wafer;

9. Chamfer: Trim the edge of the wafer into a circular arc to improve the mechanical strength of the edge of the wafer and avoid defects caused by stress concentration, with a 45-degree chamfer of 0-0.2 mm;

10. Polishing: Improve the surface roughness of the wafer to reach the epitaxial wafer-level precision (first double-sided polishing, then single-sided polishing). The front surface roughness is less than 0.3μm, and the back surface roughness is 0.4-1.0 μm;

11. Cleaning: Remove the pollutants on the wafer surface, such as dust particles, metal, organic dirt, etc.;

12. Quality inspection: The wafer (flatness, surface dust particles, etc.) should be inspected with a high-precision detector to meet the requirements of customers.

Excellent quality and stable supply capabilities can make sapphire substrate suppliers highly recognized and trusted by customers. CRYSCORE purchases high-precision imported equipment and has a strong large-scale production capacity of various types of high-quality sapphire substrates, leave us a message to get a quote.

Related News
  • Growth Method for Sapphire Crystal

    Growth Method for Sapphire Crystal

    The composition of sapphire is aluminium oxide (Al2O3), which is formed by covalent bonding of three oxygen atoms and two aluminum atoms, and its crystal structure is a hexagonal lattice. It is often ...
  • The Obvious Advantages of Sapphire Windows

    The Obvious Advantages of Sapphire Windows

    Ⅰ. Advantages of sapphire windows themselvesAs a kind of corundum, sapphire has the characteristics of high strength, high hardness, high temperature resistance, corrosion resistance, good wear resis...
  • The Manufacturing Process of Sapphire Wafer

    The Manufacturing Process of Sapphire Wafer

    In practical production, the sapphire wafer is made by cutting the crystal bar and then grinding and polishing.
Sapphire Product- Inquiry