AN.No.G321EV-560E
- ii -
CONTENTS
1. SPECIFICATIONS
1.1
General .........................................................................................................
1
1.2
Features ........................................................................................................
1
1.3
Option Specifications ....................................................................................
1
1.4
Absolute Maximum Ratings (excluding CFL backlight) ................................
2
1.5
Mechanical Characteristics ...........................................................................
2
1.6
Electrical Characteristics (excluding CFL backlight).....................................
2
1.7
Optical Characteristics ..................................................................................
3
1.8
LCD Panel Lifetime .......................................................................................
4
1.9
Dimensions ...................................................................................................
5
2. CIRCUIT STRUCTURE
2.1
Liquid Crystal Driving Circuit.........................................................................
6
2.2
Circuit Structure ............................................................................................
8
2.3
Timing Characteristics ..................................................................................
12
2.4
Interface Circuit.............................................................................................
14
3. CFL BACKLIGHTING
3.1
Absolute Maximum Ratings ..........................................................................
18
3.2
Electrical Characteristics ..............................................................................
18
3.3
Brightness .....................................................................................................
18
3.4
Service Life ...................................................................................................
19
3.5
Connector for CFL Backlight.........................................................................
19
3.6
Recommended CFL Inverter ........................................................................
19
3.7
CFL Backlight Replacement Procedures......................................................
23
4. NOTES ..................................................................................................................
25
INDEX
AN.No.G321EV-560E
- 1 -
1.
SPECIFICATIONS
1.1 General
The G321E is a thin liquid crystal display (LCD) module that consists of a full dot-matrix LCD panel,
CMOS LSIs, and a CFL backlight. The LCD panel features a wide viewing angle and high
contrast. The full dot-matrix structure allows both graphics and character display. In addition, the
display is clear and stable, with no image warping or position skew, because the display position is
specified by the intersection of transparent electrodes in a matrix.
1.2 Features
Full dot-matrix structure with 320
240 dots
duty
Four-bit parallel data input
Two power supplies : V
DD
= 5 V, V
LC
= -24 V (for driving liquid crystal)
Built-in CFL backlighting, high-brightness, side-lighting type, using one CFL
Easy replacement of the CFL
Weight : Approx. 195 g
1.3 Option Specifications
Model name
LCD
Dot color*
Background
color*
Viewing
angle
G321EV5R000
FSTN type
(black and
white)
White
Black
6 o'clock
Transmissive, with CFL
backlighting (white),
negative mode**
G321EV5B000
STN type
(blue)
White
Blue
6 o'clock
Transmissive, with CFL
backlighting (white),
negative mode**
*
The LCD colors are affected by temperature, so the colors at low or high temperature differ slightly
from those in the above table.
** On a negative mode LCD, the dots are white when the display data is high, and black
(G321EV5R000) or blue (G321EV5B000) when the display data is low. To get a positive display
on a negative mode LCD, invert the display data before inputting it to the module.
AN.No.G321EV-560E
- 2 -
1.4 Absolute Maximum Ratings (excluding CFL backlight)
Vss = 0 V
0
V
DD
- 30.0
V
DD
- 30.0
-0.3
0
-20
+20
+20
V
O
V
LC
65%RH
48 hrs
1000 hrs
6.0
V
DD
V
DD
V
DD
+ 0.3
+ 50
+ 60
+85
+65
V
V
V
V
C
C
%RH
%RH
V
DD
V
LC
V
O
V
IN
T
opr
T
stg
Power supply voltage
Input voltage
Operating temperature
Storage temperature
Storage humidity
Item
Symbol
Conditions
Min.
Max.
Unit
1.5 Mechanical Characteristics
Item
Standard
Dot configuration
320
240 dots
Module dimensions ( H
V
T )
[ mm ]
150.0
96.0
14.0 max.
Viewing area ( H
V )
[ mm ]
103.0
80.0
Active display area ( H
V )
[ mm ]
95.97
71.97
Dot dimensions ( H
V )
[ mm ]
0.27
0.27
Dot pitch ( H
V )
[ mm ]
0.30
0.30
Weight
[ g ]
195 typ.
H : Horizontal V : Vertical T : Thickness (max.)
1.6 Electrical Characteristics (Excluding CFL Backlight)
1.6.1
FSTN type (Black and white, transmissive type)
Vss = 0 V, Ta = 0
C to 50
C
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit
V
DD_
4.75
5.00
5.25
V
V
LC
V
DD
= 5 V
-24.5
-24.0
-23.5
V
V
O
V
DD
= 5 V
V
O
V
LC
-23.0
-5.0
V
High
V
IH
V
DD
= 5 V
5%
0.8 V
DD
V
DD
V
Low
V
IL
V
DD
= 5 V
5%
0
0.2 V
DD
V
I
DD
6.4
15
mA
I
LC
5.7
15
mA
Frame frequency
f
FLM
V
DD
= 5 V
5%
66.5
70
73.5
H
Z
* Display patterns : Checkered patterns
Display data shift clock frequency : 3.0 MH
Z
Power supply voltage
Input voltage
V
DD
= 5.0 V, V
LC
=-24.0 V
V
O
=-15.6 V
f
FLM
= 70 H
Z
, Ta = 25
C
Current consumption*
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