DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 1/15
OPTREX
Type No.
*******
Aug 19, 1999
First Edition
Final Revision
Quality Assurance Div.
Production Div.
Checked by
Checked by
Approved by
Production Div.
Design Engineering Div.
Prepared by
LCD Module Specification
ＤＭＣ２０２６１Ｈ
ＤＭＣ２０２６１Ｈ
ＤＭＣ２０２６１Ｈ
ＤＭＣ２０２６１Ｈ
Table of Contents
1. General Specifications .............................................................................2
2. Electrical Specifications...........................................................................3
3. Optical Specifications ..............................................................................5
4. I/O Terminal.............................................................................................7
5. Test............................................................................................................9
6. Appearance Standards............................................................................10
7. Code System of Production Lot ..........................................................13
8. Type Number..........................................................................................13
9. Applying Precautions .............................................................................13
10. Precautions Relating Product Handling................................................14
11. Warranty..................................................................................................15
Revision History
Rev. Date Page
Comment
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 2/15
OPTREX
1. General Specifications
Operating Temp.
：
min. -20℃ ～ max. 70℃
Storage Temp.
：
min. -30℃ ～ max. 80℃
Display Format
：
20 characters × 2 lines
Display Fonts
：
5 × 8 dots ( 1 character )
Viewing Area
：
83.0 (W) × 18.6 (H) mm
Outline Dimensions
：
116.0 (W) × 37.0 (H) × (11) (D) mm
Weight
：
50g max.
LCD Type
：
FRD-7057
( TN / Clear / Reflective )
Viewing Angle
：
6:00
Backlight
：
None
Drawings
：
Dimensional Outline
UE-30779A
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 3/15
OPTREX
2.Electrical Specifications
2.1.Absolute Maximum Ratings
V
SS
=0V
Parameter Symbol Conditions
Min. Max.
Units
Supply Voltage
(Logic)
V
CC
-V
SS
－
-0.3
7.0
V
Supply Voltage
(LCD Drive)
V
CC
-V
EE
－
0
13.0
V
Input Voltage
V
I
－
-0.3
V
CC
+0.3 V
2.2.DC Characteristics
Ta=25℃, V
SS
=0V
Parameter Symbol Conditions
Min. Typ. Max.
Units
Supply Voltage
(Logic)
V
CC
-V
SS
－
4.5
－
5.5
V
Supply Voltage
(LCD Drive)
V
CC
-V
EE
Shown in 3.1
V
High Level
Input Voltage
V
IH
V
CC
=5.0V±10% 2.2 －
V
CC
V
Low Level
Input Voltage
V
IL
V
CC
=5.0V±10% -0.3 － 0.6
V
High Level
Output Voltage
V
OH
I
OH
=-0.205mA 2.4
－
－
V
Low Level
Output Voltage
V
OL
I
OL
=1.2mA
－
－
0.4
V
I
CC
V
CC
-V
SS
=5.0V
－
mA
Supply Current
I
EE
V
CC
-V
EE
=8.1V
－
mA
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 4/15
OPTREX
2.3.AC Characteristics
V
CC
=5.0V±10%
Parameter Symbol
Conditions
Min.
Max.
Units
Enable Cycle Time
t
CYC
Fig.1,
2 500
－
ns
Enable Pulse Width
PW
EH
Fig.1,
2 230
－
ns
Enable Rise/Fall Time
t
E
r,
t
E
f Fig.1,
2 － 20 ns
Address Setup Time
t
AS
Fig.1,
2 40
－
ns
Address Hold Time
t
AH
Fig.1,
2 10
－
ns
Write Data Setup Time
t
DSW
Fig.1 80 － ns
Write Data Hold Time
t
DHW
Fig.1 10 － ns
Read Data Delay Time
t
DDR
Fig.2 － 160 ns
Read Data Hold Time
t
DHR
Fig.2 5
－
ns
Fig.1 Write Operation Timing
Fig.2 Read Operation Timing
E
R/W
V
IH
V
IL
PW
EH
V
IL
t
CYC
t
E
r
t
E
f
t
DSW
t
DHW
t
AH
t
AS
V
IL
RS
DB0
～
DB7
Valid Data
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IL
V
IH
V
IL
V
IH
V
IL
E
R/W
V
IH
V
IH
V
IH
PW
EH
t
DDR
t
E
f
t
CYC
t
DHR
t
E
r
t
AH
t
AS
V
IL
RS
DB0
～
DB7
Valid Data
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IL
V
OH
V
OL
V
OH
V
OL
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 5/15
OPTREX
3.Optical Specifications
3.1.LCD Driving Voltage
Parameter Symbol
Conditions
Min.
Typ.
Max.
Units
Recommended
Ta=
-20℃
－
－
10.2 V
LCD Driving Voltage
V
CC
-V
EE
Ta=25℃ 7.5
8.1
8.7
V
Note 1
Ta=70℃ 6.4
－
－
V
Note 1 :
Voltage (Applied actual waveform to LCD Module) for the best contrast. The range of
minimum and maximum shows tolerance of the operating voltage. The specified contrast ratio and
response time are not guaranteed over the entire range.
3.2.Optical Characteristics
Ta=25℃, 1/16 Duty, 1/5 Bias, V
D
=8.1V (Note 4), θ=10 ﾟ, φ=270 ﾟ
Parameter Symbol
Conditions
Min.
Typ.
Max.
Units
Contrast Ratio
Note 1
CR
θ
=20 ﾟ, φ=270 ﾟ
－
3.5 －
Viewing Angle
Shown in 3.3
Response Rise
Note 2
T
ON
－
－
150 230 ms
Time Decay
Note 3
T
OFF
－
－
40 80 ms
Note 1 : Contrast ratio is definded as follows.
CR = L
OFF
/ L
ON
CR = L
ON
/ L
OFF
L
ON
: Luminance of the ON segments
L
OFF
: Luminance of the OFF segments
Note 2 : The time that the luminance level reaches 90% of the saturation level from 0% when ON
signal is applied.
Note 3 : The time that the luminance level reaches 10% of the saturation level from 100% when OFF
signal is applied.
Note 4 : Definition of Driving Voltage V
D
Assuming that the typical driving waveforms shown below are applied to the LCD Panel at
1/A Duty - 1/B Bias ( A : Duty Number, B : Bias Number ). Driving voltage V
D
is definded
as follows.
V
D
= (Vth1+Vth2) / 2
Vth1 : The voltage V
O-P
that should provide 50% of the satulation level in the luminance
measured atθ= 10 ﾟ, φ=270 ﾟ on the segment which the ON signal is applied to.
Vth2 : The voltage V
O-P
that should provide 26% of the satulation level in the luminance
measured atθ= 40 ﾟ, φ=270 ﾟ on the segment which the OFF signal is applied to.
V
O-P
1 /
f
F
( B-2 )
×
V
O-P
/ B
1 / (
f
F
×
A )
〈
OFF SIGNAL
〉
〈
ON SIGNAL
〉
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 6/15
OPTREX
3.3.Definition of Viewing Angle and Optimum Viewing Area
･
Point ● shows the point where contrast ratio is measured. : θ= 20 ﾟ, φ=270 ﾟ
･
Driving condition : 1/16 Duty, 1/5 Bias, V
D
=8.1V,
f
F
=90Hz
･
Area shows typ. CR≧2
3.4.System Block Diagram
270
ﾟ
0
ﾟ
90
ﾟ
180
ﾟ
270
ﾟ
θ
φ
135
ﾟ
315
ﾟ
225
ﾟ
45
ﾟ
180
ﾟ
90
ﾟ
(
φ
= 0
ﾟ）
φ
10
20
30
40
50
θ
φ
Halogen bulb
Computer
Rotation Table (
θ
,
φ
)
Temperature Chamber
LCD
Optical Fiber
Waveform Generator
Control Unit &
#1980A WB
Photometer
θ
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 7/15
OPTREX
4.I/O Terminal
4.1.Pin Assignment
No. Symbol Level
Function
1
V
SS
－
Power Supply (0V, GND)
2
V
CC
－
Power Supply for Logic
3
V
EE
－
Power Supply for LCD Drive
4
RS
H / L
Register Select Signal
5
R/W
H / L
Read/Write Select Signal H : Read L : Write
6
E
H / L
Enable Signal (No pull-up Resister)
7
DB0
H / L
Data Bus Line / Non-connection at 4-bit operation
8
DB1
H / L
Data Bus Line / Non-connection at 4-bit operation
9
DB2
H / L
Data Bus Line / Non-connection at 4-bit operation
10
DB3
H / L
Data Bus Line / Non-connection at 4-bit operation
11
DB4
H / L
Data Bus Line
12
DB5
H / L
Data Bus Line
13
DB6
H / L
Data Bus Line
14
DB7
H / L
Data Bus Line
4.2.Example of Power Supply
It is recommended to apply a potentiometer for the contrast adjust due to the tolerance
of the driving voltage and its temperature dependence.
MODULE
VCC
VEE
VSS
VEE (-Voltage)
VCC (+Voltage)
VR=10
～
20K
Ω
VSS (0V)
VR
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 8/15
OPTREX
4.3.Block Diagram
～
E
R/W
RS
Control LSI
or equivalent
HD44780
L C D P
20 characters
×
2 lines
Column Driver
or equivalent
LC7930N
×
2
DB7
DB0
4
SEG 40
SEG 60
COM 16
8
VEE
VSS
VCC
To LSI
Bias Circuit
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 9/15
OPTREX
5.Test
No change on display and in operation under the following test condition.
No. Parameter
Conditions
Notes
1
High Temperature Operating
70℃±2℃, 96hrs (operation state)
2
Low Temperature Operating
-20℃±2℃, 96hrs (operation state)
3
3
High Temperature Storage
80℃±2℃, 96hrs
4
4
Low Temperature Storage
-30℃±2℃, 96hrs
3, 4
5
Damp Proof Test
60℃±2℃, 85～90%RH, 96hrs
3, 4
6
Vibration Test
Total fixed amplitude : 1.5mm
5
Vibration Frequency : 10～55Hz
One cycle 60 seconds to 3 directions of X, Y, Z for
each 15 minutes
7
Shock Test
To be measured after dropping from 60cm high on
the concrete surface in packing state.
Note 1 : Unless otherwise specified, tests will be conducted under the following condition.
Temperature : 20±5℃
Humidity :
65±5%
Note 2 : Unless otherwise specified, tests will be not conducted under functioning state.
Note 3 : No dew condensation to be observed.
Note 4 : The function test shall be conducted after 4 hours storage at the normal temperature and humidity
after removed from the test chamber.
Note 5 : Vibration test will be conducted to the product itself without putting it in a container.
E
A
G
D
C
F
60cm
Concrete Surface
Dropping method corner dropping
E,F,G face : once
B,C,D edge : once
A corner : once
Face dropping
Edge dropping
B
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 10/15
OPTREX
6.Appearance Standards
6.1.Inspection conditions
The LCD shall be inspected under 40W white fluorescent light.
The distance between the eyes and the sample shall be more than 30cm.
All directions for inspecting the sample should be within 45 ﾟ against perpendicular line.
6.2.Definition of applicable Zones
A Zone : Active display area
B Zone : Area from outside of "A Zone" to validity viewing area
C Zone : Rest parts
A Zone + B Zone = Validity viewing area
A Zone
B Zone
C Zone
Bezel Flame
45
ﾟ
DMC20261H (AJ) No.99-0268
OPTREX CORPORATION
Page 11/15
OPTREX
6.3.Standards
No. Parameter
Criteria
1
Black and
(1) Round Shape
White Spots,
Zone
Acceptable Number
Foreign Substances
Dimension (mm)
A
B
C
D ≦ 0.1
*
*
*
0.1
＜
D ≦
0.2
5 5 *
0.2
＜
D ≦
0.3
0 1 *
0.3
＜
D
0 0 *