1.7 STN Color LCD (T1950CS)
The STN Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.7.1 STN Color LCD Module
The T1950CS STN color LCD is backlit and supports 640x480 pixels with a Video control-
ler. This video controller includes the functions of Video Graphics Array (VGA).
The T1950CS’s LCD receives vertical and horizontal synchronizing signals, 16-bit data signal
(8-bit upper block data signal and 8-bit lower block data signal) and shift clock for data
transmission. All signals are CMOS-level compatible.
The STN LCD is shown in Figure 1-8, and specifications for the LCD are listed in Table 1-5.
Figure 1-8 STN Color LCD
Table 1-5 STN Color LCD Specifications
Item Specifications
Number of Dots (dots) 640x480
Dot pitch (mm) 0.3 (W)x0.3 (H)
Display area (mm) 195 (W)x147 (H)
Contrast 18:1 (Typically)
FL current (mA) 5.0
FL frequency (KHz) 47
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