LG LAEC015-GN Owner's Manual page 26

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LED Display Module (LDM)
The front face of the LAEC015-GN LED display is fitted with 72 light emitting diode (LED) dot LED
modules known as LDMs. Each LMD is fitted with 28880 LEDs* plus associated drive electronics.
Electrical connections (low voltage power, and digital data) are made to the rear of each LDM, from
inside of the enclosure.
Figures 3 and 4 are showing the front and rear views of an LAEC015-GN LDM.
* Remark: each LDM contains 160x180 pixels (row x column) and each pixel is composed by 3 in 1 LEDs,
so there are totally 28800 LEDs fitted on the front face of an LDM.
Figures 3. LDM - front view
Figures 4. LDM - rear view