A top emission stack enables a higher aperture ratio for OLED panels. Merck focuses on ink formulations for the flat films solution-based deposition process, which is crucial for high performance pure color top emission stacks. According to the presentation, their ink formulation know how for TE and high-resolution display is suitable for 4K IT monitors and 8KOLED TVs. The UDC presentation also focused on their mask-less, solvent-less, OVJP product and formation of an OVJP company to commercialize the technology. According to the company, in their OVJP patented approach they can use the same stack in OLED for conventional and OJP, enabling RGB side by side low cost TV production. OLED with IJP. Click for higher resolution OLED Materials: More efficient Blue UDC also presented about progress made in phosphorescent OLED display.