Description Of Operation; Lcd Panel - Toshiba 4560 Service Manual

5.4 Description of Operation

5.4.1 Dot matrix LCD display circuit
(1) Structure
The liquid crystal module comprises an STN black-and-white mode transparent liquid crystal that
has a 320 x 240 dots display area, driver LSI, frame, printed circuit board and side-type CFL backlight.
*STN:Super Twisted Nematic
(2) Block diagram
CP
D0
D1
D2
D3
FRAME
LOAD
D.OFF
VDD
power
VSS
supply
Vo
VEE
Nov. 1997 © TOSHIBA
Fig. 4.1-1
IC3
120

LCD PANEL

320 x 240 DOTS
120
IC4
Fig. 4.1-2
5 - 7
IC1 IC2
160 160
Transparent SW
4560/4570 DISPLAY