Toshiba TLP510E Technisch trainingshandboek - Pagina 8

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4. R.G.B. DRIVE CIRCUIT

4-1. Outline

The outline of RGB drive circuit is described below
using the G process of the RGB drive circuit as an
example.
SW1
Odd number
1
pixel memory
DAC1
2
1
Even number
DAC2
pixel memory
2
SW2
Frame inverted
Digital PC board
In the panel, 1024 pixels are arranged in a horizontal
direction and 768 lines of the pixels are in a vertical as
shown in Fig. 4-1-2.
As an H inverted drive system is employed, the panel
input signal waveform is as shown in Fig. 4-1-3.
Black level
White level
2nd line
Center voltage
1st line
White level
Black level
1st frame
Fig. 4-1-3
Q505,Q506,Q507
Normal
Q502
amp.1
1
Amp.
Q508,Q509,Q510
2
Inverted
amp.1
Q511,Q512,Q513
Normal
Q504
amp.2
1
Amp.
Q523,Q524,Q510
2
Inverted
amp.2
Line inverted
Drive PC board
Fig. 4-1-1
1st line
2nd line
2nd frame
4-1
Exclusive for odd number pixel
Q516
Q514
Q515
SW3
SW5
1
2
1
Q514
1
Q515
SW4
SW6
2
2
Q517
Exclusive for
even number pixel
12-phase decomposite
1024 pixels
1
2 3
Fig. 4-1-2
Panel
VIDEO
1
input
2
3
4
5
6
7
8
9
10
11
12
12-phase composite
(12-phase collectively input)
1022 1023 1024
1st line
768 lines
768th line