Understanding Inverter Board

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Understanding Inverter Board

For a newer LCD Monitor design, the inverter board is joining together
with the power board as shown in the above photo. Older LCD Monitor
has the inverter board separated from the power board as shown below


There are four types of inverter designs (topologies) used in the LCD
Monitors.
1) Buck Royer inverter
2) Push pull inverter (Direct Drive)
3) Half bridge inverter and (Direct Drive)
4) Full bridge inverter (Direct Drive)
Number 2, 3 and 4 are called Direct Drive because it eliminates the need
for the inductor (buck choke) and resonant capacitors found in a
conventional Royer Oscillator. In other words, Direct Drive architecture
reduces component count, lower production cost and most importantly
improved transformer designs that optimize performance.
1) Buck Royer Inverter

Block diagram of Buck Royer inverter