Doodle Boards

A liquid crystal doodle board is an electronic writing device that utilizes pressure-sensitive liquid crystal display technology. Its core working principle is as follows: when a stylus or hard object applies pressure on the surface, the liquid crystal molecules in the compressed area undergo a change in alignment, forming a visible pattern. When the drawing is cleared via a circuit button, the liquid crystal molecules reset to their original state, erasing the content. It is primarily designed for art启蒙 (artistic enlightenment) and writing practice for children aged 4-12, while also meeting temporary note-taking needs for adults, such as meeting memos or family messages. The device typically features a display area ranging from 7 to 12 inches and employs a blue-light-free reflective display technology to avoid the eye strain associated with traditional screens. As an eco-friendly alternative requiring no paper or ink, its physical structure consists of a liquid crystal layer, conductive layer, and hardened protective film. Common additional features include a magnetic backplate design, drawing lock mechanism, and replaceable battery configuration, making it suitable for multi-scenario use at home, in school, or while traveling.