To simplify the system power rails design, we suggest that VR, VCC use one power rail, and VG, VB use another power rail. Figure 11-1 gives an example for power rails routing.

Connect the GND pin to thermal pad on board with the shortest wire and the thermal pad is connected to GND plane with the vias, as many as possible to help the power dissipation.

Figure 11-1 Power Rails Routing Suggestion

Figure 11-2 gives an example for line routing. Connect the line switch to the center of the line bus, so as to uniform the current flowing from the line switch to the left side and right side LEDs in white grayscale. With this connection, the unbalance of the parasitic inductor from the routing is the smallest and the display performance is better, especially in low grayscale condition.

Figure 11-2 Line Routing Suggestion

Figure 11-3 gives an example for channel routing with the shortest wire. With this connection, the channel to the LED path is the shortest, which can reduce the wire inductance, and be a benefit to the performance. However, the data transmission sequence must be adjusted to follow the pins routing map. For example, R0 connects to column 15 (LED15 ). The first data must be column 15 (LED15) rather than column 0 (LED0).

Figure 11-3 Channel Routing Suggestion With Shortest Wire

Figure 11-4 gives an example for channel routing with pin number sequence. With this connection, the data transmission sequence are the same with pin number sequence. For example, R0 connects to column 0 (LED0 ). The first data is column 0 (LED0). However, with this connection, the inductance for each channel can be different, which can bring a slight difference for the worst case.

Figure 11-4 Channel Routing Suggestion With Channel Order Sequence