Toshiba 353 User Manual
e-STUDIO350/352/353/450/452/453
CONTROL PANEL
5
5 - 9
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5.4 Description of Operation
5.4.1 Dot matrix LCD circuit
(1) Structure
(1) Structure
The LCD panel is an STN blue mode transmissive type LCD with 640x240-dot display capacity. It con-
sists of a driver LSI, frame, printed circuit board, and lateral type CCFL backlight.
* STN: Super Twisted Nematic
* CCFL: Cold Cathode Fluorescent Lamp
sists of a driver LSI, frame, printed circuit board, and lateral type CCFL backlight.
* STN: Super Twisted Nematic
* CCFL: Cold Cathode Fluorescent Lamp
(2) Block diagram
(40 x 240)
IC
XSCL
UD0
UD
UD2
UD3
WF
LP
VDD
GND
V0
VEE
GND
V0
VEE
Power
supply
supply
LCDEN
IC2
LCD PANEL
40 x 240 DOTS
40 x 240 DOTS
IC3
IC4
0
0
0
0
IC5
20
IC
20
Fig. 5-401
Fig. 5-402
05/11