... , exquisite and real display effect Built-in LED driver, shift register, and latch circuit.Wide ... Dot matrix type (COB) and lamp type (LED discreted on board). Single color or RG color. Driving method ... change, no color excursion4) Can repair each led lamps, so the cost of maintain is lower ... high consistency, big viewing angle, can repair each led lampsFrom material to finished product, from design to ...