Foldable display devices provide the users with a large display area in a compact form. As a result, the device may be vulnerable to mechanical damage in the hinge and fold. Samsung seems to be particularly working on improvements for reducing the probability of damage to these foldable devices.
U.S. Publication No. 20200233464 assigned to Samsung and titled, “Display Device”, is focused on preventing damage to a display panel and a hinge portion. The design of the device includes a display panel support made of three support panel portions with a first hinge connecting the first support portion and the second support portion and a second hinge portion connecting the second support portion and the third support portion. The design further comprises a hinge controller which either makes the first, second or both hinges rotatable or non-rotatable based on an angle between the first and second support panel portions or second and third support panel portions. This design reduces the probability of the foldable device getting damaged due to bending the display beyond its capability.
US Publication No. 20200233464 assigned to Samsung
While the above publication is focusing on a hinge design that does not allow a display to be flexed beyond its capability, U.S. Publication No. 20200233461 assigned to Samsung and titled, “Electronic Device And Method For Preventing Damage Of Display” is focused on detecting the presence of external objects on the display device before folding the display. The foldable display device uses a force touch sensor to detect the presence of any external objects in contact with the display when in the unfolded state. Upon detection of external objects, the device outputs a warning notification of potential damage to the flexible display if the device is folded closed with the external object present on the flexible display.
US Publication No. 20200233461 assigned to Samsung