Panel Drive (TH-42PX75U)

Discharge Control

IC9500 of the D board contains the Discharge Control circuit that analyzes the RGB and sync information of the video signal to create the Scan data to drive the Scan operation (SC) board and Sustain data to drive the Sustain operation (SS) board.

The SC board is responsible for the generation of the scan pulses. Scan pulses are used for initialization and selection of the pixels. The SU and SD boards are de-multiplexer boards that are responsible for converting the serial data output of the SC board into parallel data to drive the panel. Each board drives one half of the panel horizontally.

The SS board is responsible for the generation of the sustain pulses. Sustain pulses are used to initialize and control the brightness of the panel.

Data Drive

IC9900 memorizes the 10 bit data into two field data to drive the left and right side of the panel. IC9900 subsequently converts the picture data into the 10, 11, or 12 subfields data to feed the data electrodes of the panel.

The data drive signal of IC9900 is output to the C boards. The C boards are buffer boards that are used to distribute data to the shift registers of the panel.

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Panasonic Generation Plasma Display Television manual Panel Drive TH-42PX75U

Generation Plasma Display Television specifications

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