A 200mm silicon wafer that has been cut into two 100mm wafers with multiple wafer flats. The major wafer flats have been aligned to the original wafer's notch.
LSG cores, or resizes, various types of wafers, including silicon wafers, up to 12", or 300mm in diameter into smaller wafers. We core all standard sized wafers; 2", 3", 4", 6", 8", and 12". Patterned and blank wafers can be cut to any geometry or size; round, square, notched, flat on the bottom, multiple flats, etc.
We core silicon, germanium, gallium arsenide, indium phosphide, graphite, silicon carbide, diamond coated wafers, stainless steel wafers, and many others.
LSG's standard Coring and Wafer Processing Details:
A blanket coat of photoresist is applied for wafer protection
The wafers are background to the required thickness if required
A custom program is created based on customer requirements
The wafers are laser cut to the customers requirements
The resized wafers are edge rounded to increase their ability to handle mechanical stress
A detailed inspection is performed
The processed wafers are stripped of the photoresist layer and cleaned in a class 100 clean room environment
The wafers are packaged and shipped