The Secret Behind Samsung’s Foldable Smartphone


Technology giants, Samsung recently displayed their prototype of the foldable smartphone with Infinity Flex Display at Samsung Developer Conference. Interestingly, the smartphone converts into a tablet when the display is unfolded. However, the company has not yet spilled the beans on the technology they are using or the secret which is enabling them to make foldable devices.

On closely reviewing it we can see that the tech giant, Samsung has ditched the all-glass ideology and has adopted the high-tech polymers -procured from their most trusted and long-term technology partners. According to sources, Samsung has come into a collaboration with their Japenese partners – Sumitomo Chemical for producing a beyond imaginable transparent polyimide that can be bent numerous times without any visible differences and has the touch facility.

According to experts, this very transparent polyimide layer will be attached to a flexible OLED panel directly underneath the coating. The segment will be connected using an extremely durable and flexible agglutinative which Samsung has been building for years. This adhesive will allow the whole OLED to bend at the middle. The glue will also be able to expand to a certain extent and is expected to hold onto the unit. This adhesive from Samsung is called Optical Transparent Adhesive or OCA film and is a particular type of elasticized glue that can be twisted for thousands of times and continue to hold its real size and form. Further, it’s announced that the flexible OLED panel that Samsung is practicing has about 45 percent thinner polarizer.

As per inside reports, Japanese supplier, Nichido Denko, is making the polarizer film for the bendable display. Surprisingly, the OLED display panel used in the Galaxy F smartphone is the same that has been used in the current Galaxy S9 or Note 9 models. Another prominent part of the foldable smartphone is the stretchy flexible joint, and it is being anticipated that the hinge will be sourced locally by Samsung from a company named KH Vatec. Reportedly, Samsung has put in a lot of time and effort with KH Vatec to create the seemingly elastic and stretching hinge that sits right below the foldable display.

In its folded form the phone, tentatively being referred to as Galaxy F, presents us with a 4.6” 480 x 1,960px display. The hinge looks similar to the one on the Surface Book, but the design has not been confirmed and is part of one of the several options patented by Samsung. Concealed inside is a tablet-sized screen that unfolds to 7.3” in diagonal and 1,536 x 2,152px resolution. Samsung has worked with Google to plan the UI so applications can go between the small and the big screens consistently.