This is the world's first 86-inch in-cell electronic whiteboard. The bezeless design supports ease of writing while the interactive box ensures convenient use. The reduction of the bezel like with a smartphone allows the user to feel that the screen is touchable. In addition, all interfaces are contained in the interface box, allowing for intuitive and convenient usability. In order to reduce visual discomfort when peripheral IT devices are connected, the user can open or close the door, ensuring a visually clean environment.