Abstract: A flexible display device is disclosed. The flexible display device comprises a first body, a second body, a flexible display, and a speaker. The first body includes a deco frame, a first sound radiation unit, and a second sound radiation unit. The first sound radiation unit and the second sound radiation unit form an outlet through which the sound (sound waves) of the speaker is transmitted to the outside of the first body. The flexible display includes a first region fixed to the first body, and is provided with the second sound radiation unit while the outer surface of the border portion of the first region is spaced apart from the deco frame. The sound (sound waves) of the speaker is transmitted to the outside of the first body through the first sound radiation unit and the second sound radiation unit, such that the sound quality of the speaker can be improved, and the second sound radiation unit can be prevented from being exposed to the outside.

Abstract: Disclosed is a composition for protecting nerve cells, promoting nerve cell growth and regenerating nerve cells comprising berberine, derivatives thereof or pharmaceutically acceptable salts thereof. The composition has protective effects against apoptosis of neuronal stem cells and differentiated neuronal stem cells, an effect of inducing the regeneration of nerve cells, a regenerative effect on neurites, a neuroregenerative effect on central nerves and peripheral nerves, a reformation effect on neuromuscular junctions, and a protective effect against apoptosis of nerve cells and a neuroregenerative effect in animals suffering from dementia and brain ischemia. Therefore, the composition can be used as a therapeutic agent for the prevention and treatment of neurodegenerative diseases, ischemic nervous diseases or nerve injuries, and for the improvement of learning capability.