Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 71SDI PDP 9.
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 Main function of Each Assembly
9.2 Abbreviation List
9.3 IC Data Sheets
9.1 Main function of Each Assembly
9.1.1 X Main Board
The X Main board generate a drive signal by switching the FET
in synchronization with logic main board timing and supplies
the X electrode of the panel with the drive signal through the
connector.
1. Maintain voltage waveforms (including ERC).
2. Generate X rising ramp signal.
3. Maintain Ve bias between Scan intervals.
9.1.2 Y Main Board
The Y Main board generate a drive signal by switching the FET
in synchronization with the logic Main Board timing and
sequential supplies the Y electrode of the panel with the drive
signal through the scan driver IC on the Y-buffer board. This
board connected to the panel’s Y terminal has the following
main functions.
1. Maintain voltage waveforms (including ERC).
2. Generate Y-rising Falling Ramp.
3. Maintain V scan bias.
9.1.3 Logic Main Board
The Logic Main board generates and outputs the address drive
output signal and the X,Y drive signal by processing the video
signals. This Board buffers the address drive output signal and
feeds it to the address drive IC (COF module, video signal- X Y
drive signal generation, frame memory circuit / address data
rearrangement).
9.1.4 Logic Buffer (E, F)
The Logic Buffer transmits data signal and control signal.
9.1.5 Y Buffer Board (Upper, Lower)
The Y Buffer board consisting of the upper and lower boards
supplies the Y-terminal with scan waveforms. The board
comprises eight scan driver ICs (ST microelectronics STV
7617: 64 or 65 output pins), but four ICs for the SD class.
9.1.6 AC Noise Filter
The AC Noise filter has function for removing noise (low
frequency) and blocking surge. It affects safety standards
(EMC, EMI).
9.1.7 TCP (Tape Carrier Package)
The TCP applies the Va pulse to the address electrode and
constitutes address discharge by the potential difference
between the Va pulse and the pulse applied to the Y electrode.
The TCP comprise four data driver ICs (STV7610A: 96 pins
output pins). Seven TCPs are required for signal scan.
9.2 Abbreviation List
AC Alternating Current
COF Circuit On Foil
DC Direct Current
ERC Energy Recovery Circuit
ESD Electro Static Discharge
FET Field Effect Transistor
FFC Flat Foil Cable
FPC Flexible Printed Circuit
FTV Flat TeleVision
HD High Definition
I/O Input/Output
IC Integrated Circuit
LB Logic Buffer
LED Light Emitting Diode
LVDS Low Voltage Differential Signalling
PCB Printed Circuit Board (same as PWB)
PDP Plasma Display Panel
PSU Power Supply Unit
PWB Printed Wiring Board (same as PCB)
RGB Red, Green, Blue colour space
SD Standard Definition
SDI Samsung Display Industry (supplier)
SMPS Switched Mode Power Supply
SSB Small Signal Board
SF Sub Field
TCP Tape Carrier Package
VR Variable Resistor
Vsc Scan Voltage
YBL Y Buffer Lower board
YBU Y Buffer Upper board
YM Y Main board
9.3 IC Data Sheets
Not applicable.
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