Chapter 17
LCD
"A" electrode
(COM3-SEG3)
"B" electrode
(COM1-SEG3)
XVII - 36
LCD Display Examples
COM3
COM2
COM1
COM0
SEG3
(data)
(1)
(OFF)
(OFF)
Figure:17.4.4 LCD display example in 1/4 duty
Frame period
(1)
(1)
(0)
(OFF)
(OFF)
(OFF)
(ON)
(OFF)
(OFF)
V
LC1
V
LC2
V
LCD
V
LC3
V
SS
V
LC1
V
LC2
V
LC3
V
SS
V
LC1
V
LC2
V
LC3
V
SS
V
LC1
V
LC2
V
LC3
V
SS
V
LC1
V
LC2
V
LC3
V
SS
+V
LCD
+1/3V
LCD
0
-1/3V
LCD
-V
LCD
+V
LCD
+1/3V
LCD
0
-1/3V
LCD
-V
LCD