OLED Pen / student

This type of the pen of the front application the OLED material. The light switch is located in the end.Mainly used to solve our at ordinary times in the dim light can place the normal writing.Such as:Someone take the curtains closed when the public class on show PPt .OLED's advantages
solid-state institutions, there is no liquid material, so a better seismic performance, not afraid of wrestling;can create different substrate materials can be made to bend the flexible display.