Semes said on the 4th that it developed for mass production and held the first shipment ceremony for the world's first eighth-generation (2500×2200) high-resolution QD-OLED (quantum dot-organic light-emitting diode) inkjet equipment (model name Vincent).
QD inkjet equipment is used in the quantum dot color filter (QDCF) process to manufacture displays such as high-resolution TVs and monitors, and it is equipment that mixes quantum dots with a special solvent (ink) to make QD ink, then massively jets (discharges) it as microdroplets the size of picoliters (one trillionth of a liter), a unit for measuring red blood cell volume, and coats quickly with precision within micrometers.
This is a technology that precisely jets ultra-fine ink droplets, half the thickness of a human hair, onto hundreds of millions of pixels that make up a high-resolution display panel.
Semes' eighth-generation high-resolution inkjet equipment, Vincent, is equipped with more than 100 heads that jet QD ink to secure high productivity, while improving resolution by more than 30% to 220 ppi (pixels per inch) compared with existing systems, resulting in excellent text quality where color fringing on small characters is barely noticeable and the QD-OLED's characteristic fringe phenomenon is hardly visible, the company said.
It is also being credited with securing stable luminance in high-resolution display products by applying high-resolution inkjet printing technology to dispense quantum dot ink in uniform amounts into fine pixels.
Han Seok-gu, Semes Head of Team for displays, said, "By securing the world's first eighth-generation high-resolution QD inkjet mass-production technology and now succeeding in the first equipment shipment, we have established technological leadership in the global equipment market," and added, "Demand for high-resolution TVs and monitors has grown significantly recently, so we expect sales to increase as we strengthen our technological capabilities going forward."