AI Article Synopsis
- To create high-resolution OLED displays, precise micrometer-scale patterns must be made in metal shadow masks, with Invar chosen for its low thermal expansion properties.
- A new cost-efficient method for micromachining Invar is presented, utilizing a combination of advanced laser technology and beam-splitting modules.
- This method allows for drilling and cutting with 784 laser beams simultaneously, achieving high precision while minimizing thermal effects, thereby enhancing production efficiency.
Article Abstract
To fulfil the requirements for high-resolution organic light-emitting diode (OLED) displays, precise and high-quality micrometer-scale patterns have to be fabricated inside metal shadow masks. Invar has been selected for this application due to its unique properties, especially a low coefficient of thermal expansion. In this study, a novel cost-efficient method of multi-beam micromachining of invar will be introduced. The combination of a Meopta beam splitting, focusing and monitoring module with a galvanometer scanner and HiLASE high-energy pulse laser system emitting ultrashort pulses at 515 nm allows drilling and cutting of invar foil with 784 beams at once with high precision and almost no thermal effects and heat-affected zone, thus significantly improving the throughput and efficiency.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7372339 | PMC |
| http://dx.doi.org/10.3390/ma13132962 | DOI Listing |
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Article Synopsis
- To create high-resolution OLED displays, precise micrometer-scale patterns must be made in metal shadow masks, with Invar chosen for its low thermal expansion properties.
- A new cost-efficient method for micromachining Invar is presented, utilizing a combination of advanced laser technology and beam-splitting modules.
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