Panasonic Viera TC-42P1, Service Manual

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Plasma Display Technology
Plasma display panel
FIg. A
Panasonic 37/42 inch wide plasma display panel is devel-
oped for large screen multimedia display with space saving.
The plasma display panel use AC type Sub-field drive sys-
tem with Dual scanning system.
This panel have also Panasonic original Asymmetric cell and
Plasma AI technology.
Fig. A is the CRT and Plasma Display Panel (PDP) compari-
son chart.
Plasma display panel structure
Fig. B
Plasma display panel structure.
Panasonic Plasma display panel is consist of front glass,
rear glass and Aluminum base.
The front glass has each 480 lines scan and sustain trans-
parence electrodes.
The rear glass has 2556 (852 x 3 ) data electrodes on the
inner surface. These electrodes are connected to the data
drive circuit boards directly.
Rear Glass Structure
Fig. C
On the rear glass the data electrode is mounted.
The dielectric is coated on the rear glass.
Red, Green and Blue color phosphors are formed on the
data electrode with the ribs. However to improve color repro-
duction and brightness, each color phosphors are formed dif-
ferent width This is called " Asymmetrical cell " as Panasonic
original technology.
Front Glass Structure
Fig. D
On the front glass scan and sustain transparent electrodes
are mounted in pair.
The dielectrics is coated on the front grass.
MgO over coat is also applied on the dielectrics.
The front and rear glasses are piled and sealed . And low
presser gas are charged between two glasses.
CRT PDP
Scan Dot Sequence Line Sequence
Interlace/
Progressive Progressive
Emission Dot Sequence Simultaneous
Phosphor
Excitation Electron Ultra Violet Lay
Brightness
Control Beam Current
control Discharge Time
control
(Sub-Filed Drive)
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Data Drive Boards
Data Drive Boards
Aluminum Base
Rear Glass
Front Glass
Dielectrics
Color Phosphor
Asymmetrical Cell
Data Electrodes
Rear Glass
Rib
MgO
Scan & Sustain
Electrodes
Dielectrics
Front Glass