Founded in 2000, GreenBworld has spent a quarter of a century forming nano- and micro-scale patterns on film. Decorative films for smartphone battery covers, IML and IMD films, automotive interior parts, decorative sheets for payment cards, light guide plates for displays — each of those programs taught us what actually goes wrong between a pattern design and a finished product surface.

Producing nano patterns in a laboratory and producing them on a line every day are two different problems. We moved to continuous roll-to-roll (R2R) production in 2014 and have refined the process while supplying films at volume for smartphones, home appliances and automotive components. Master mold design and fabrication, pattern transfer, curing and finishing all take place in house, which keeps specification review and design changes fast.

That capability is now focused on functional optical films. We imprint structures on the scale of visible wavelengths directly onto the film surface to reduce glare (AG), lower reflectance (AR), control viewing angle (AG Privacy) and create authentication marks that are effectively impossible to replicate (latent image authentication). Because the structure is transferred rather than formed by dispersing particles in a coating, the surface is uniform and the optical specification can be defined numerically at the design stage.

GreenBworld holds six registered patents and has maintained ISO 9001 quality management and ISO 14001 environmental management certification since 2012, with a registered scope covering the design, development and manufacturing of nanoimprinting-based optical films and functional display films. Prototyping through to mass production runs on our own line, serving mobile accessories, displays, automotive electronics and security authentication.