Yes we have many flexible led matrixs, and now we designed a bigger matrix with rigid PCB board. It's a customized design from our customer in France. 

        They said they will use them to work led displays, and each display using 6pcs this matrix together. They use ws2801 32leds/m flexible led strip work this display before.but now they use this the rigid panel, it will be more easy for install, and saving cost.