Lcd Panel - Toshiba TLP411E Technical Training Manual

2-8. LCD Panel

The LCD panel uses the active matrix panel with 3.3 cm in
diagonal length and a built in driver made of the super thin
film multi-crystal silicone transistor. Use of 3 panels en-
ables to display in full color mode. The pixels are arranged
in square form which is adequate for the data projection
use. This realizes to display figures and characters clearly.
Also, use of a high luminance screen employing the ad-
vanced on-chip black matrix and a built-in cross-talk free
circuit provides a high screen quality with less cross-talk.
The poly-silicone TFT high speed scanner is used and up/
down and left/right inversion function is provided. Further-
more, use of 5V system interface circuit realizes a low volt-
age consumption for the timing and control signals.
Pre-charge
control circuit
V shift register
(bidirectional scan)
Black frame
control circuit
COM
polarity
Black frame
control circuit
V shift register
(bidirectional scan)
Fig. 4-12 Liquid crystal panel block diagram
2-8-1. Features
• Number of dots displayed: 519,000 dots in diagonal
length of 3.3 cm (1.3 type)
• High transparent ratio: 20%
• Built-in cross-talk free circuit
• High contrast ratio in normally white mode:
200 (Standard)
• Built-in H, V driver (Built-in input level conversion cir-
cuit, 5V driving possible)
• Up/down and left/right inversion display function
2-8-2. Element component
• Number of dots: 832 (H) x 624 (V) = 519,168
• Active matrix panel with the driver using multi-crystal
silicone transistors
The block diagram of the LCD panel is shown in Fig. 4-12
and terminal description is in Table 4-1.
Left-right/upper-lower
reverse control circuit
Input
signal
shifter
circuit
4-7
PSIG
1
HST
13
HCK1
14
level
15 HCK2
BLK
17
RGT
9
VST
20
VCK
19
PCG
21
DWN
22
ENB
18
MODE1
12
MODE2
11
10 MODE3
8
HV
DD
VV
23
DD
VSS
16
SIG1
7
5 SIG2
3 SIG3
2
SIG4
4
SIG5
6 SIG6
24
COM