In one corner is LCD (liquid crystal display)
As "liquid crystal display" would indicate, LCD screens use liquid crystals to switch pixels on and off to reveal a specific color. Liquid crystals are like a mixture between a solid and a liquid, where an electric current can be applied to change their state in order for a specific reaction to occur.
How do liquid crystal displays (LCDs) work? - PhysLINK
The roll-to-roll line takes rolls of plastic substrate and continuously combines them with the liquid crystal material, creating a flexible pressure sensitive display — the fundamental element of the eWriter. The manufacturing line is highly versatile, located in Kent, Ohio, and has been in operation since 2009 — indeed, KDI is developing a second line to add more capacity and capability.
LED stands for light emitting diode. Although it has a different name than liquid crystal display, it's not something entirely different, but really just a different type of LCD screen.
Technical Resources - LXD Liquid Crystal Displays
Abbreviated LCD, liquid crystal display is a flat, thin display device that has replaced the older display. LCD provides better picture quality and support for large resolutions.
What is Liquid Crystal Display (LCD)? - Lifewire
Roll-to-roll manufacturing of flexible materials is a well known art. High volume manufacturing of liquid crystal displays and functional liquid crystal panels is a well-known art.