Specific Process Knowledge/Lithography/Coaters/SprayCoater

Spray Coater

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The spray coater at Danchip is located in Cleanroom C-1. The machine is an ExactaCoat from Sono-tek which can be fitted with one of three different nozzles depending on the nature of the spray coating tasks at hand. The three different nozzles (Impact, AccuMist and Vortex) are optimized for different applications such as spray coating of large areas (e.g. entire wafers), smaller areas (e.g. wafer pieces or other small samples) or already structured samples that cannot be coated uniformly by spin coating. All nozzles use an ultrasonic tranducer for atomizing the solution to be spray coated. It is therefore a prerequisite that all components are compatible with this process. This is the case with most substances, although process parameters may need optimization to give satisfactory results.

Practically any sample that will fit inside the spray coater can be processed. Spray patterns are easily programmed either using predefined spray patterns (1D line, 2D rectangles/circles/meanders/spirals or custom 3D spray patterns).

The spray coating process as well as major features of the three nozzles are described into more detail in the manual which can be found via the Equipment Info page in LabManager. It can be found be clicking Equipment -> Info or by using the direct link below. Then follow the 'User Manual' link.

The user manual(s), quality control procedure(s) and results, user APV(s), technical information and contact information can be found in LabManager

Spray Coater in Cleanroom C-1

Equipment		Spray Coater
Purpose		Spraying imprint resist Spraying photoresist Spraying of other solutions
Performance	Substrate handling	Can handle almost any sample size and shape
	Permanent media	No permanent media
	Manual dispense option	Two syringe pumps
Process parameter range	Solution viscosity	Range
	Chemical properties	Must be non-toxic Compatible with titanium Resistant to ultrasonic atomization
Substrates	Batch size	Any sample(s) that fit inside machine
	Allowed materials	All chemicals to be spray coated must be approved specifically for spray coating Any non-toxic, non-particulate and non-crosslinking material is likely to be approved