OM4068 Philips Semiconductors, OM4068 Datasheet - Page 10

• Manufacturer Part Number: OM4068
• Description: LCD driver for low multiplex rates
• Manufacturer: Philips Semiconductors

Philips Semiconductors
Table 3 LCD drive modes: summary of characteristics
LCD drive mode waveforms
The static LCD drive mode is used when a single backplane is provided in the LCD. Backplane and segment drive
waveforms for this mode are shown in Fig.5.
1998 Jun 18
handbook, full pagewidth
LCD DRIVE
LCD driver for low multiplex rates
MODE
BP1
Static
1 : 2
1 : 3
DRIVER OUTPUT
BACKPLANE
BACKPLANES
1
2
3
NUMBER OF
SEG N
SEG N
BP1
(off)
(on)
off
1
Fig.5 Static drive mode waveforms (V
SEG N
V LCD
V LCD
V LCD
V SS
V SS
V SS
SEGMENTS
LEVELS
2
3
4
SEG N + 1
on
CONFIGURATION
T frame
LCD BIAS
static
1
1
2
3
10
V LCD
V LCD
V LCD
V LCD
0 V
0 V
OP
V
---------------------- -
off rms
0.354
0.333
= V
V
0
OP
LCD
SEG
V
BP1
SS
).
V
---------------------- -
on rms
0.791
0.638
V
MBK819
1
OP
Product specification
D
OM4068
=
2.2236
1.915
V
---------------------- -
V
off rms
on rms