Advertisement
EN 30
9.
LGE PDP 2K6
9.2.2
Power ON and Power OFF Sequence
•
For a correct functioning of the display, the different supply
voltages have to be powered up and down according to a
Vcc
(5V)
Va
Vs
DISPEN
Symbol
If power sequence does not meet to above sequence diagram, PDP drivers may be damaged permanently.
Even when AC input power supply is switched ON/OFF, above sequence should be observed strictly.
Transition section: Transition section is needed to drive PDP as a initial and set-up period. At this period,
Brightness is low and there is no gray.
If DISPEN is low, picture is changed to BLACK pattern. Signal is operated by synchronized vertical signal.
The panel will not malfunction, if DISPEN is high at start up.
9.3
Control Board
9.3.1
Purpose
Creates signal processing, and controls many FETs on each
DRIVER board with R, G, and B signals.
MCM
(Multi Chip Module)
LVDS Signal
8 bit or 10
Input pin
bit signal
Figure 9-3 Control board
Circuit Descriptions, Abbreviation List, and IC Data Sheets
T On
T VaR
T VsR
Min.
Power_on
5 frames
3 Sec
Description
Time interval between 90% of Vcc and 10% of Vs
T On
when Power On
Time interval between 10% of Vs and 90% of Vcc
T Off
when Power Off
T VaR
Rising Time of Va (10% to 90%)
T VaF
Falling Time of Va (90% to 10%)
T VsR
Rising Time of Vs (10% to 90%)
T VsF
Falling Time of Vs (90% to 10%)
Figure 9-2 Power supply sequence
MCM
6 bi t
signal
( Multi Chip Module )
G_16390_035.eps
certain sequence. This sequence is shown in the following
figure.
Normal Display
9.4
X Board
9.4.1
Purpose
Receives LOGIC signal from the CONTROL board and makes
the ADDRESS PULSE (generates Address discharge) by ON/
OFF operation, and then supplies this waveform to TCP (data).
TCP
100806
T Off
T VaF
T VsF
Power_off
3 Sec
Min. 2 frame
Min.
Max.
unit
0.2
-
sec
20
-
ms
10
400
ms
100
300
ms
100
800
ms
90
500
ms
G_16390_080.eps
310806
X Left board
X Right board
Figure 9-4 X boards
G_16390_083.eps
010906
Advertisement
