So you need a flexible display for your DIY project? The Flexible RGB LED Matrix Display is worth a look. It has 7 x 71 RGB LEDs and can display numbers and letters. It has a flexible PCB board, so you can bend the whole thing to use with cups, clocks, musical instruments, and everything in between.
More gadgets like this: here
You can use an Arduino UNO to drive this matrix display. More information is available here.
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