Foldable display configuration with generalized layer mechanical compatibility

摘要

A flexible organic light emitting diode (OLED) display device comprising an upper module having a cover window film, a lower module, and a display module between the upper module and the lower module. The display module includes an organic light emitting diode (OLED) and an organic light emitting diode (OLED) substrate. The rigidity of the display device components is adjusted to satisfy a specific relationship such that the bending stiffness of the upper module and the lower module is adjusted in order to place the bending neutral plane under the display module. , The display is placed in a compressive strain state, not a strain of zero. This configuration is suitable for a two-fold flexible display in which the upper module can be folded to face itself.