These are seven layers of a backlight from an old laptop LCD. The amount of optical engineering required to produce a nice, even glow from an edge-lit panel is impressive.
The layers include horizontal and vertical polarizing films, a diffusion screen for the backlight, and anti-reflex glass.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.