400 Series
1-15
1.8
TFT Color LCD (400CDT)
The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.8.1
LCD Module
The 400CDT TFT color LCD supports 640x480 pixels with an internal display controller.
This controller includes the functions of Video Graphics Array (VGA) and Super VGA
(SVGA) for external display.
The 400CDT LCD receives 18-bit data signals, data enable signals, and has a shift clock for
data transmission. All signals are CMOS-level compatible.
The TFT LCD is shown in figure 1-9.
Figure 1-9 TFT color LCD
The specifications for the LCD are listed in table 1-6.
Table 1-6 TFT color LCD specifications
Item
Specifications
Number of dots
(dots)
640
x
480
Dot pitch
(mm)
0.33 (W)
x
0.33 (H)
Display area
(mm)
211.2 (W)
x
158.4 (H)
Contrast
100:1 (minimum)
FL current
(mA)
4.6/2.8
(Bright/Semi-bright)
FL frequency
(KHz)
40