[2muchcoffeeman]

Apparently not the automatic sliding door.

Star Trek the original series 1966.

https://en.wikipedia.org/wiki/Automatic_door

“In 1954, Dee Horton and Lew Hewitt invented the first sliding automatic door. The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market.[4]”

And not just flat panel displays, but capacitive touch screens.

[Krasnol]

Seems like neither flat displays nor touch screens:

https://en.wikipedia.org/wiki/Touchscreen#History

https://en.wikipedia.org/wiki/Flat-panel_display#History