Digital signage; LED signage for theater; Display screens; Digital signage display panels; Organic light emitting diodes (OLED); Television receivers; Television monitors; Smartphones; Displays for smartphones; Digital set-top boxes; Computer application software for mobile phones; Computer application software for televisions; Tablet PCs; Monitors for computers; Rechargeable batteries; Battery chargers; Network surveillance cameras; Digital cameras; LED display apparatus; Electronic panels for displaying messages.;