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LN has a very large capability of 'piezoelectricity' which generate an electric potential in response to applied mechanical stress.
Utilizing this characteristics, it is used as a SAW Filter.
Up to 4 inches diameter wafer is available, and a high level of surface flatness, orientation-flat accuracy and edge profiling accuracy can be finished.
Broad range of wafer surface orientation(crystal axis) including 128Y, 64Y and Ycut can be provided.
One-side mirror polishing is mainly used in order to prevent radio noise(spurious output) from the back-side of the wafer, which is characteristic of a SAW Filter. With mechano-chemical polishing using colloidal silica, it achieves a high spec mirror face roughness at several tens of nanometers.
The roughness of the back-side surface of the wafer widely varies from Ra=0.1µm to 4µm.
The thickness of wafer widely varies from 200µm to 1mm, and it is required highly accurate flatness and very few thickness variation.
LN has a characteristic of large birefringence. Birefringence is the difference between the normal ray refractive index and extraordinary ray refractive index.
Since LN has a birefringence of 10 times greater than quartz and allows a low-pass filter to be thinly built, it is used in top class Digital S.L.R.(single-lens refles) Cameras.
The rectangular shape wafer is available, and the size and thickness can freely be chosen.
Mirror polishing on both sides of rectangular wafer.
It is a polishing process to achieve highly accurate flatness and very few thickness variation, which are definitely required for optical application.
LN has a very large capability of 'piezoelectricity' which generate an electric potential in response to applied mechanical stress.
Utilizing this characteristic, it is used as a Gyro Sensor for transportation equipment in land, maline and aviation.
Up to 4 inches diameter wafer is available, and wafer surface orientation(crystal axis) and orientation-flat direction can freely be selected.
Both-side lapping and both-side polishing are available.
