A Projection Display is a technology that projects images or videos onto a surface, typically a screen or wall. This method uses a light source, such as a lamp or laser, to illuminate the image, which is then magnified and displayed. Commonly used in classrooms, theaters, and home entertainment systems, projection displays can create large visuals that are easily viewable by multiple people. There are various types of projection displays, including LCD (Liquid Crystal Display), DLP (Digital Light Processing), and LED (Light Emitting Diode) projectors. Each type has its own advantages, such as brightness, color accuracy, and portability. These devices are essential for presentations, movies, and gaming, enhancing the viewing experience.