1.6 Monochrome LCD (T1950)
The monochrome Liquid Crystal Display (LCD) is composed of an LCD module, a Fluores-
cent Lamp (FL), and an FL inverter board.
1.6.1 Monochrome LCD Module
The T1950 monochrome LCD supports 640x480 pixels with a Video controller and 64 levels
of gray. The video controller includes the functions of the Video Graphics Array (VGA).
The LCD receives vertical and horizontal synchronizing signals, 8-bit data signals (4-bit upper
block data signal and 4-bit lower block data signal), and shift clock for data transmission. All
signals are CMOS-level compatible.
The sidelit LCD is shown in Figure 1-7, and its specifications are listed in Table 1-3.
Figure 1-7 Monochrome LCD
Table 1-3 Monochrome LCD Specifications
Item Specifications
Number of Dots (dots) 640 x 480
Dot pitch (mm) 0.30 (W) x 0.30 (H)
Display area (mm) 198 (W) x 150 (H)
Contrast 17:1 (typically)
FL current (mA) 5.0
FL frequency (KHz) 42
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