Jumbotron

A Jumbotron is a large-screen television using technology developed by Sony, typically used in sports stadiums and concert venues to show close up shots of the event. Although JumboTron is a registered trademark owned by the Sony Corporation, the word jumbotron is often used by the public as a genericized trademark. Sony JumboTrons ceased being sold in 2001, when the company decided to exit the business.

Read more about Jumbotron:  Design, Deployments, Similar Devices