300mm sapphire wafer
300mm is also called 12-inch wafer, which is a commonly used specification for large size wafers in the semiconductor industry.
With high hardness, high transmittance, good thermal conductivity and chemical stability, 300mm sapphire wafers have a wide range of applications in the semiconductor lighting industry, optical windows, high temperature infrared windows and many other fields.
300mm sapphire wafer
Due to its large size and excellent performance, the 300mm sapphire wafer is particularly suitable for the manufacture of high-end electronic products, optical equipment and precision instruments.
For example, it can be used as a substrate material for LEDs (light-emitting diodes) and lasers, as well as a screen or protective glass for high-end smartphones, smartwatches and other devices.
Sapphire wafers are cleaned with ultrapure water of 18M cm or more in a Class 100 cleanroom to ensure the cleanliness of each wafer surface. Sapphire wafers come in a variety of size specifications, including 1-inch, 2-inch, 3-inch, 4-inch, 5-inch, 6-inch, and 8-inch, as well as square and rectangular wafers.
While there is no direct mention of the 300mm (approx. 12 in.) specification. .
