In the publication of Brian Q, et al., Optics and Laser Technology (2012), the authors reported a laser ablation method to pattern ITO film on a glass substate for the solar cell fabrication.
Continue reading “Laser ablation”Category: Converting process
Deep reactive ion etching (DRIE)
Deep receive ion etching (DRIE) include two process: Bosch process and Cryogenic process (Reference 1).
Continue reading “Deep reactive ion etching (DRIE)”Dry etching
It is difficult for wet etching to achieve good anisotropy in fabrication; therefore dry etching is adopted to solve this problem.
Continue reading “Dry etching”Wet etching
Etching is an important step in the fabrication of semiconductor devices and other similar process. It includes wet etching, a solution based method, and drying etching, based on vacuum process typically.
Continue reading “Wet etching”Ellipsometry
Ellipsometry is a powerful tool in thin film field to characterize film properties, e.g. refractive index (n), extinction coefficiency (k), surface roughness, crystallinity, etc.
Continue reading “Ellipsometry”Corona treatment
In the coating/printing industry, the corona treatment is a commonly adopted step to enhance the surface energy of the coating/printing web, typically made of plastics, paper, fabrics with low surface energy of low 30s mN/m or dyne/cm.
Continue reading “Corona treatment”Major coating method and thickness control
The following are simple introduction of major coating methods and factors affecting coating process and coating thickness.
Continue reading “Major coating method and thickness control”Wet film thickness estimation in blade coating or similar process
As a rule of thumb, the wet thickness of a coating is estimated to be half of the gap between blade edge and substate surface in the blade coating or similar coating process.
Continue reading “Wet film thickness estimation in blade coating or similar process”Coating Defects Inspection Resolution
Surface defects inspection is an important step to in-line detect coating defects such as voids, streaks, clumps, bubbles, scratches etc. in continuous web coating and similar processes. It provides evidences for process optimization, root cause analysis, as well as quality control/assurance.
Continue reading “Coating Defects Inspection Resolution”Names of coating/surface defects
The following pictures are useful in guiding the naming of coating or film defects. The content are from Wintriss website.
Continue reading “Names of coating/surface defects”