DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 1/14
OPTREX
Type No.
*******
June 24, 1998
First Edition
Final Revisi on
Quality A ssurance Di v.
Product i on Di v.
Checked by
Checked by
Approved by
Product i on Di v.
Design Engi neeri ng Di v.
Prepared by
LCD Module Specification
ＤＭＣ２４２２７Ｎ－Ｂ
ＤＭＣ２４２２７Ｎ－ＢＤＭＣ２４２２７Ｎ－Ｂ
ＤＭＣ２４２２７Ｎ－Ｂ
Table of Cont ent s
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. Handling Precautions.............................................................................14
Revision History
Rev. Date Page Comment
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 2/14
OPTREX
1.General Specifications
Operating Temp . ： min. 0℃ ～ max. 50℃
Storage Temp. ： min. -20℃ ～ max. 70℃
Display Format ： 24 characters × 2 lines
Display Fonts ： 5 × 8 dots ( 1 character )
Viewing Area ： 93.5 (W) × 15.8 (H) mm
Outline Dimensions ： 118.0 (W) × 36.0 (H) × (11.0) (D) mm
Weight ： 45g max.
LCD Type ： NRD-7126
( STN / Neutral -mode / Reflective )
Viewing Angle ： 6:00
Backlight ： None
Drawings ： Dimensional Outline UE-30372A
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 3/14
OPTREX
2.Electrical Specifications
2.1.Absolute Maximum Ratings VSS=0V
Parameter Symbol Conditions Min. Max. Units
Supply Voltage
(Logic)
VCC-VSS － -0.3 7.0 V
Supply Voltage
(LCD Drive)
VCC-VEE － 0 13.0 V
Input Voltage VI － -0.3 VCC+0.3 V
2.2.DC Characteristics Ta=25℃, VSS=0V
Parameter Symbol Conditions Min. Typ. Max. Units
Supply Voltage
(Logic)
VCC-VSS － 4.5
－ 5.5 V
Supply Voltage
(LCD Drive)
VCC-VEE Shown in 3.1 V
High Level
Input Voltage
VIH V
CC=5.0V±10% 2.2 － V
CC V
Low Level
Input Voltage
VIL V
CC=5.0V±10% 0 － 0.6 V
High Level
Output Voltage
VOH I
OH=-0.205mA 2.4
－ V
CC V
Low Level
Output Voltage
VOL I
OL=1.2mA 0
－ 0.4 V
Supply Current ICC V
CC-VSS=5.0V － 2.0 3.0 mA
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 4/14
OPTREX
2.3.AC Characteristics VCC=5.0V±10%
Parameter Symbol Conditions Min. Max. Units
Enable Cycle Time tCYC Fig.1, 2 500 － ns
Enable Pulse Width PWEH Fig.1, 2 230 － ns
Enable Rise/Fall Time tEr, tEf Fig.1, 2 － 20 ns
Address Setup Time tAS Fig.1, 2 40 － ns
Address Hold Time tAH Fig.1, 2 10 － ns
Write Data Setup Time tDSW Fig.1 80 － ns
Write Data Hold Time tDHW Fig.1 10 － ns
Read Data Delay Time tDDR Fig.2 － 160 ns
Read Data Hold Time tDHR Fig.2 5 － ns
Fig.1 Write Operation Timing
Fig.2 Read Operation Timing
E
R/W
VIH
VIL
PWEH
VIL
tCYC
tErtEf
tDSW tDHW
tAH
tAS
VIL
RS
DB0～DB7 Valid Data
VIH
VIL
VIH
VIL VIH VIL
VIL
VIH
VIL VIH
VIL
E
R/W VIH
VIH
VIH
PWEH
tDDR
tEf
tCYC
tDHR
tEr
tAH
tAS
VIL
RS
DB0～DB7 Valid Data
VIH
VIL
VIH
VIL VIH VIL
VIL
VOH
VOL VOH
VOL
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 5/14
OPTREX
3.Optical Specifications
3.1.LCD Driving Voltage
Parameter Symbol Conditions Min. Typ. Max. Units
Recommended Ta= 0℃ － － 5.4 V
LCD Driving Voltage VCC-VEE Ta=25℃ 4.4 4.7 5.0 V
Note 1 Ta=50℃ 4.2
－ － 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, 1/4.5 Bias, VD=4.7V (Note 4), θ= 0ﾟ, φ=－ﾟ
Parameter Symbol Conditions Min. Typ. Max. Units
Contrast Ratio Note 1 CR θ= 0ﾟ, φ=－ﾟ － 5 －
Viewing Angle Shown in 3.3
Response Rise
Note 2 TON － － 130 200 ms
Time Decay Note 3 TOFF － － 180 280 ms
Note 1 : Contrast ratio is definded as follows.
CR = LOFF / LON
LON : Luminance of the ON segments
LOFF : Luminance of the OFF segments
Note 2 : T he time that the luminance level reaches 90% of the saturation level from 0% when ON
signal is applied.
Note 3 : T he time that the luminance level reaches 10% of the saturation level from 100% when OFF
signal is applied.
Note 4 : Definition of Driving Voltage VD
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 VD is definded
as follows.
VD = (Vth1+Vth2) / 2
Vth1 : The voltage VO-P that should provide 50% of the satulation level in the luminance at
the segment which the ON signal is applied to.
Vth2 : The voltage VO-P that should provide 50% of the satulation level in the luminance at
the segment which the OFF signal is applied to.
VO-P
1 / fF
(
B-2
)
×VO-P / B
1 /
(
fF×A
)
〈OFF SIGNAL〉
〈ON SIGNAL〉
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 6/14
OPTREX
3.3.Definition of Viewing Angle and Optimum Viewing Area
･Point ● shows the point where contrast ratio is measured. : θ= 0ﾟ, φ=－ﾟ
･Driving condition : 1/16 Duty, 1 /4 . 5 Bias, VD=4.7V, fF=70Hz
･Area shows typ. CR
≧2
3.4.System Block Diagram
0ﾟ
90ﾟ
180ﾟ
270ﾟ
θ
φ
270ﾟ
135ﾟ
315ﾟ
225ﾟ
45ﾟ
180ﾟ
90ﾟ
θ(φ= 0ﾟ）
φ
10 20 30 40 50
φ
Halogen bulb
Computer
Rotation Table (θ,φ)
Temperature Chamber
LCD
Optical Fiber
Waveform Generator
Control Unit &
#1980A WB
Photometer
θ
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 7/14
OPTREX
4.I/O Terminal
4.1.Pin Assignment
CN1
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, 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 B us Line
12 DB5 H / L Data B us Line
13 DB6 H / L Data B us Line
14 DB7 H / L Data B us 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
VCC (+Voltage)
VR=10～20KΩ
VSS (0V)
VR
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 8/14
OPTREX
4.3.Block Diagram
～
E
R/W
RS
Control LSI
or equivalent
HD44780
L C D P
24 characters × 2 lines
Column Driver
or equivalent
LC7930N × 2
DB7
DB0
4
SEG 40 SEG 80
COM 16
8
VEE
VSS
VCC
To LSIBias Circuit
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 9/14
OPTREX
5.Test
No change on display and in operation under the following test condition.
No. Parameter Conditions Notes
1 High Temperature Operating 50℃±2℃, 96hrs (operation state)
2 Low Temperature Operating 0℃±2℃, 96hrs (operation state) 3
3 High Temperature Storage 70℃±2℃, 96hrs 4
4 Low Temperature Storage -20℃±2℃, 96hrs 3, 4
5 Damp Proof Test 40℃±2℃, 90～95%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 b e 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 : Vibratio n test will be conducted to the product itself without putting it in a container.
E
A
GDC
F
60cm
C o ncrete S urface
Dropping method corner dropping
E,F,G face : once
B,C,D edge : once
A corner : once
Face dropping
Edge drop ping
B
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 10/14
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 = Vali dity viewing area
A Zone
B Zone
C Zone
Bezel Flame
45ﾟ
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 11/14
OPTREX
6.3.Standards
No. Parameter Criteria
1 Black and (1) Round Shape
White Spots, Zone Acceptable Number
Fore i gn Substance s 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 *
D = ( Long + Short ) / 2 * : Disregard
(2) Line Shape
Zone Acceptable Number
X(mm) Y(mm) A B C
－ 0.02≧W * * *
2.0≧L 0.03≧W 3 3 *
1.0≧L 0.04≧W 1 2 *
1.0≧L 0.05≧W 0 2 *
－ 0.05＜W In the same way (1)
X : Length Y : Width * : Disregard
Total defects shall not exceed 5.
2 Air Bubbles
(between glass Zone Acceptable Number
& polari zer) Dimension (mm) A B C
D ≦0.15 * * *
0.15＜ D ≦0.3 2 3 *
0.3
＜ D ≦0.5 1 2 *
0.5
＜ D ≦1.0 0 1 *
* : Disregard
Total defects shall not exceed 3.
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 12/14
OPTREX
No. Parameter Criteria
3 The Shape of Dot (1) Dot Shape (with Dent)
As per the sketch of left hand.
(2) Dot Shape (with Projection)
Should not be connec t ed to next do t.
(3) Pin Hole
(X+Y) / 2≦0.2mm
(Less than 0.1mm is no counted.)
Total defects shall not exceed 5.
4 Polarizer Scratches Not to be conspicuous defects.
5 Polarizer Dirts If the stains are removed easily from LCDP surface, the module is not
defective.
6 Color Variation Not to be conspicuous defects.
0.15≧
Y
X
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 13/14
OPTREX
7.Code System of Production Lot
The production lot of module is specified as follows.
□ □ □ □ □ □
Factory Number (Numeral)
Factory Code (Alphabet)
Production Week (1～5)
Pr oduct ion Month (1～9, X, Y, Z)
Production Year (Lower 2 digits)
8.Type Number
The type number of module is specified on the back of module as follows.
ＤＭＣ２４２２７ Ｎ－Ｂ
Stamp
Etchi ng or Printing
9.Applying Precautions
Please contact us when questions and/or new problems not specified in this specifications arise.
DMC24227N-B (AZ) No.98-0163 OPTREX CORPORATION Page 14/14
OPTREX
10.Handling Precautions
Optrex Products are designed for use in ordinary electronic devices such as business machines,
telecommunications equipment, measurement devices and etc..
Optrex Products are not designed, intended, or authorized for use in any application in which the failure of
the product could result in a situation where personal injury or death may occur. These applications
include, but are not limited to, life-sustaining equipment, nuclear control devices, aerospace equipment,
devices related to hazardous or flammable materials, etc. (If Buyer intends to purchase or use the Optrex
Products for such unintended or unauthorized applications, Buyer must secure prior written consent to
such use by a responsible officer of Optrex Corporation.) Should Buyer purchase or use Optrex Products
for any such unintended or unauthorized application (without such consent), Buyer shall indemnify and
hold Optrex and its officers, emplo yees, subsidiaries, affiliates and distributors harmless against all claims,
costs, damages and expenses, and reasonable attorney's fees, arising out of, directly or indirectly, any
claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that Optrex was negligent regardi ng t he design or manufacture of the par t .
1) LCD may be broken because it is made of glass.
2) Polarizer is a soft material and can easily be scratched.
3) Please avoid static electricity.
① Please be sure to ground human body and electric appliances during work.
② It is preferable to use conductive mat on table and wear cotton clothes or conduction processed fiber.
Synthetic fiber is not recommended.
③ Please slowly peel off protective film, because static electricity may be charged.
4) If it is necessary to store LCD mod ules for a long time, please comply with the following procedures.
If storage condition is not satisfactory, display (especially polarizer) may be deteriorated or soldering
I/O terminals may become difficult (some oxide is generated at I/O terminals plating).
① Store as delivered by Optrex
② If you store as unpacked, put in anti-static bag, seal its opening and store where it is not subjected to
dir ect sunshine nor fluorescent lamp.
③ Store at temperature 0 to +35℃ and at low humidity. Please refer to our specification sheets for
storage temperature range and humidity condition.
5) The module does not contain excess current limiter.
Please design the limiter to cut excess current in your power supply circuit.
6) Liquid crystal may be leaked when display is broken. Never taste it. If your hands or clothes touch it,
please immediately wash using soap.
7) The connection between the bezel and VSS (GND) is not specified in the module.
(Some module do not maintain connection between them.)
Please consult OPTREX to specify the connection.
Optrex shall not be responsible for any infringement of industrial property rights of third parties in any
country arising out of the application or use of Optrex Pr oducts, except which directly concern the
structure or production of such products.
