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2.2 TECHNICAL INFORMATION
2.2.1 PDP STRUCTURE AND CHARACTERISTIC
This unit (Display Unit) uses the flat type panel PDP (Plasma Display Panel), instead of the conventional CRT (Cathode Ray Tube),
as a display unit.
2.2.2 PIXEL (CELL) ARRAY
PDP is constructed by sealing the xenon, which emits neon and ultraviolet rays for discharging purpose, in between the electrodes
lay on the front glass substrate and rear glass substrate.
One pixel is composed of 3 RGB cells, with cell pitch of 0.299mm (1 pixel 0.897mm) horizontally and 0.675mm vertically.
The cell is arrayed in each RGB color as shown in Fig. 1. One pixel is formed by interlacing each RGB color cell.
One cell size is 0.299mm horizontally and 0.675mm vertically.
Direction
Horizontally
Vertically
sequence
No.1
R G B R G B
Pixel line
No.2
R G B R G B
Pixel line
No.767
R
Pixel line
No.768
R
Pixel line
2.2.3 PIXEL DEFECTS
Though PDP is made by means of ultra precise technology, there are cases whereby not all pixels (cell) will function properly. In some
cases, there may be defective pixels that do not light at all or the ones that always light on.
There are 2 types of Pixel defects, [Bright Dot Defects] and [Dark Dot Defects], as defined respectively in the following:
(1) Bright Dot Defects
Bright dot defect is a pixel cell that lights or blinks though it should not light.
The presence of bright dot defects can be confirmed by inputting a full black signal (pattern).
(2) Dark Dot Defects
Dark dot defect is a pixel cell that does not light, blinks, or lights twice as brightly as the pixel cell should light, though it should light.
The presence of dark dot defects can be confirmed by inputting a 100% full white signal (pattern).
No.1
No.2
Pixel
Pixel
sequence
G B R G B
G B R G B
1 pixel
(1 dot)
0.897mm(Horizontally)
Pixel pitch
No.1023
No.1024
Pixel
sequence
sequence
R G B R G B
R G B R G B
R
G B R G B
R
G B R G B
R Cell
G Cell
B Cell
0.299mm(Vertically)
Cell pitch
Fig.1
Pixel
0.675mm
(Verticall)
Pixel pitch
(Cell pitch
(No.52088)1-7
PD-42DX
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