Toshiba T200 User Manual page 10

1.5 Monochrome LCD
The monochrome LCD is composed of an LCD module, a Fluorescent Lamp (FL), and an FL
inverter board.
1.5.1 Monochrome LCD Module
The computer's monochrome LCD supports 640 x 480 pixels with a video controller and 16
levels of gray. The video controller includes the functions of the VGA and SVGA for external
display.
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 1-6 and its specifications are provided in Table 1-3.
Number of dots
Dot pitch
Display area
Contrast
FL current
FL frequency
1-10
Figure 1-6 Monochrome LCD
Table 1-3 Monochrome LCD Specifications
Item
(dots)
(mm)
(mm)
(mA)
(KHz)
Specifications
640 x 480
0.27 (W) x 0.27 (H)
196 (W) x 147.6 (H)
10:1 (typically)
5.5 (r.m.s.)
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T200/T200CS