Tft Color Lcd - Toshiba T4900CT Manual

1.6

TFT Color LCD

The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.6.1 TFT Color LCD Module
The T4900CT TFT color LCD supports 640 x 480 pixels with an internal display controller
and 262144 colors for graphics and characters. This controller includes the functions of Video
Graphics Array (VGA) and Super VGA (SVGA) for external display.
The T4900CT's LCD receives 18-bit data signals, data enable, and shift clock for data trans-
mission. All signals are CMOS-level compatible.
The TFT LCD and FL invertor board are shown in figure 1-7. The specifications for the LCD
are described in table 1-3.
Number of dots
Dot pitch
Display area
Contrast
FL current
FL frequency
1-12
Figure 1-7 TFT color LCD
Table 1-3 TFT color LCD specifications
Item
(dots)
(mm)
(mm)
(mA)
(KHz)
Specifications
640 x 480
0.33 (W) x 0.33 (H)
211.2 (W) x 158.4 (H)
60:1 (minimum)
4
47
T4900CT