DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 1/16
LCD Module Technical Specification
DMC40457NY-LY-B-CKN
Table of Contents
1. General Specifications...............................................................................................................................2
2. Electrical Specifications............................................................................................................................3
3. Optical Specifications ................................................................................................................................6
4. I/O Terminal...................................................................................................................................................8
5. Test.................................................................................................................................................................10
6. Appearance Standards.............................................................................................................................11
7. Code System of Production Lot.........................................................................................................14
8. Type Number...............................................................................................................................................14
9. Applying Precautions ...............................................................................................................................14
10. Precautions Relating Product Handling............................................................................................15
11. Warranty.......................................................................................................................................................16
Revision History
Rev. Date Page Comment
Type No.
Oct 30, 2005
First Edition
Final Revision
******
Checked by (ACI Engineering Division)
)
Approved by (Quality Assurance Division)
)
Prepared by (ACI Engineering Division)
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 2/16
1. General Specifications
Operating Temp. ：min. 0℃ 〜 max. 50℃
Storage Temp. ：min. -20℃ 〜 max. 70℃
Display Format ：40 characters × 4 lines
Display Fonts ：5 × 8 dots ( 1 character )
Viewing Area ：147.0 (W) × 29.5 (H) mm
Outline Dimensions ：190.0 (W) × 54.0 (H) × 14.6 max. (D) mm
Weight ：140g max.
LCD Type ：NTD-7705
( STN / Yellow-mode / Transmissive )
Viewing Angle ：6:00
Backlight ：LED Backlight / Yellow-green
Drawings ：Dimensional Outline UE-31695C
RoHS regulation   :To our best knowledge, this product satisfies material
requirement of RoHS regulation.
Our company is doing the best efforts to obtain
the equivalent certificate from our suppliers.
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 3/16
2. Electrical Specifications
2.1. Absolute Maximum Ratings VSS=0V
Parameter Symbol Conditions Min. Max. Units
Supply Voltage
(Logic)
VCC-VSS −-0.3 6.5 V
Supply Voltage
(LCD Drive)
VCC-VEE −06.5 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 VCC=5.0V±10% 2.2 −VCC V
Low Level
Input Voltage
VIL VCC=5.0V±10% 0−0.8 V
High Level
Output Voltage
VOH IOH=-0.205mA 2.4 −VCC V
Low Level
Output Voltage
VOL IOL=1.2mA 0−0.4 V
Supply Current ICC VCC-VSS=5.0V −5.7 15.0 mA
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 4/16
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, 2 300 −ns
Enable Rise/Fall Time tEr, tEfFig.1, 2 −25 ns
60 *1 25 ns
Address Setup Time tAS Fig.1, 2 100 *2 −ns
Address Hold Time tAH Fig.1, 2 10 −ns
Write Data Setup Time tDSW Fig.1 100 −ns
Write Data Hold Time tDHW Fig.1 10 −ns
Read Data Delay Time tDDR Fig.2 −190 ns
Read Data Hold Time tDHR Fig.2 20 −ns
*1 : 8 bit operation mode
*2 : 4 bit operation mode
Fig.1 Write Operation Timing
Fig.2 Read Operation Timing
E
R/W
VIH
VIL
PWEH
VIL
t
CYC
t
Er
t
Ef
t
DSW
t
DHW
t
AH
t
AS
VIL
RS
DB0
〜
DB7
Valid Data
VIH
VIL
VIH
VIL VIH VILVIL
VIH
VIL VIH
VIL
E
R/W VIHVIH
VIH
PWEH
t
DDR
t
Ef
t
CYC
t
DHR
t
Er
t
AH
t
AS
VIL
RS
DB0
〜
DB7
Valid Data
VIH
VIL
VIH
VIL
VIH VIL
VIL
VOH
VOL
VOH
VOL
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 5/16
2.4. Lighting Specifications
2.4.1. Absolute Maximum Ratings Ta=25℃
Parameter Symbol Conditions Min. Typ. Max. Units
Foward Current IFNote 1 − − 960 mA
Reverse Voltage VR− − − 8V
LED Power Dissipation PD− − − 4.1 mW
Note 1 : Refer to the foward current derating curve.
2.4.2. Operating Characteristics Ta=25℃
Parameter Symbol Conditions Min. Typ. Max. Units
Foward Voltage VFIF = 480mA 3.8 4.0 4.2 V
Luminance of
Backlight Surface
LIF = 480mA 50 − − cd/㎡
50
25
0
Ta (
℃
)
IF (mA)
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 6/16
3. Optical Specifications
3.1. LCD Driving Voltage
Parameter Symbol Conditions Min. Typ. Max. Units
Recommended Ta= 0℃ − − 5.0 V
LCD Driving Voltage VCC-VEE Ta=25℃4.3 4.6 4.9 V
Note 1 Ta=50℃4.0 − − 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=4.6V (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 τ
r− − 130 200 ms
Time Decay Note 3 τ
d− − 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 : 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 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.
V
O-P
1 /
f
F
( B-2 )
×
V
O-P
/ B
1 / (
f
F
×
A )
〈OFF SIGNAL〉〈ON SIGNAL〉
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 7/16
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=4.6V, fF=84.3Hz
･Area shows typ. CR≧2
3.4. System Block Diagram
φ
Halogen bulb
Computer
Rotation Table (
θ
,
φ
)
Temperature Chamber
LCD
Optical Fiber
Waveform Generator
Control Unit &
#1980A WB
Photometer
θ
0
ﾟ
90
ﾟ
ﾟ
ﾟ
θ
φ
ﾟ
ﾟ
ﾟ
ﾟ
45
ﾟ
ﾟ
90
ﾟ
θ
(
φ
= 0
ﾟ）
φ
10
20
30
40
50
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 8/16
4. I/O Terminal
4.1. Pin Assignment
No. Symbol Level Function
1DB7 H / L Data Bus Line
2DB6 H / L Data Bus Line
3DB5 H / L Data Bus Line
4DB4 H / L Data Bus Line
5DB3 H / L Data Bus Line / Non-connection at 4-bit operation
6DB2 H / L Data Bus Line / Non-connection at 4-bit operation
7DB1 H / L Data Bus Line / Non-connection at 4-bit operation
8DB0 H / L Data Bus Line / Non-connection at 4-bit operation
9E1 H, H→LEnable Signal (No pull-up Resister)
10 R/W H / L Read/Write Select Signal H : Read L : Write
11 RS H / L Register Select Signal
12 VEE −Power Supply for LCD Drive
13 VSS −Power Supply (0V, GND)
14 VCC −Power Supply for Logic
15 E2 H, H→LEnable Signal (No pull-up Resister)
16 NC −Non-connection
17 LED K −LED Cathode Terminal
18 LED A −LED Anode Terminal
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
VEE
VSS
VCC (+Voltage)
VR=10
〜
20
K
Ω
VSS (0V)
VR
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 9/16
4.3. Block Diagram
〜
E1
R/W
RS
Control LSI
or equivalent
NT3881
L C D P
40 characters × 4 lines
Column Driver
LED Backlight
or equivalent
NT3883 × 2
DB7
DB0
4
SEG 40 SEG 160
COM 16
LED A
LED K
8
VEE
VSS
VCC
To LSIBias Circuit
COM 16
SEG 40 SEG 160
Column Driver
or equivalent
NT3883 × 2
4
Control LSI
or equivalent
NT3881
E2
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 10/16
5. Test
No change on display and in operation under the following test condition.
No. Parameter Conditions Notes
1High Temperature Operating 50℃±2℃, 96hrs (operation state)
2Low Temperature Operating 0℃±2℃, 96hrs (operation state) 3
3High Temperature Storage 70℃±2℃, 96hrs 4
4Low Temperature Storage -20℃±2℃, 96hrs 3, 4
5Damp Proof Test 40℃±2℃, 90〜95%RH, 96hrs 3, 4
6Vibration 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
7Shock 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
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 11/16
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
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 12/16
6.3. Standards
No. Parameter Criteria
1Black and (1) Round Shape
White Spots, Zone Acceptable Number
Foreign Substances Dimension (mm) A B C
D ≦ 0.1 * * *
0.1 ＜ D ≦ 0.2 55*
0.2 ＜ D ≦ 0.3 01*
0.3 ＜ D 00*
D = ( Long + Short ) / 2 * : Disregard
(2) Line Shape
Zone Acceptable Number
X(mm) Y(mm) A B C
−0.02≧W* * *
2.0≧L0.03≧W33*
1.0≧L0.04≧W12*
1.0≧L0.05≧W02*
−0.05＜WIn the same way (1)
X : Length Y : Width * : Disregard
Total defects shall not exceed 5.
2Air Bubbles
(between glass Zone Acceptable Number
& polarizer) Dimension (mm) A B C
D ≦0.15 * * *
0.15＜ D ≦0.3 23*
0.3 ＜ D ≦0.5 12*
0.5 ＜ D ≦1.0 01*
* : Disregard
Total defects shall not exceed 3.
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 13/16
No. Parameter Criteria
3The Shape of Dot (1) Dot Shape (with Dent)
As per the sketch of left hand.
(2) Dot Shape (with Projection)
Should not be connected to next dot.
(3) Pin Hole
(X+Y) / 2≦0.2mm
(Less than 0.1mm is no counted.)
Total defects shall not exceed 5.
4Polarizer Scratches Not to be conspicuous defects.
5Polarizer Dirts If the stains are removed easily from LCDP surface, the module is not
defective.
6Color Variation Not to be conspicuous defects.
0.15
≧
Y
X
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 14/16
7. Code System of Production Lot
The production lot of module is specified as follows.
Factory Control Number (0~99)
Date of the week (A~G)
Factory Number (0~9)
Factory Code (Alphabet)
Production Week (1~5)
Production Month (1~9, X, Y, Z)
Production Year (Lower 2 digits)
8. Type Number
The type number of module is specified as follows.
DMC40457NY-LY-B-CKN
9. Applying Precautions
Please contact us when questions and/or new problems not specified in this
Specifications arise.
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 15/16
10. Precautions Relating Product Handling
The Following precautions will guide you in handling our product correctly.
1) Liquid crystal display devices
1. The liquid crystal display device panel used in the liquid crystal display module is
made of plate glass. Avoid any strong mechanical shock. Should the glass break
handle it with care.
2. The polarizer adhering to the surface of the LCD is made of a soft material.
Guard against scratching it.
2) Care of the liquid crystal display module against static electricity discharge.
1. When working with the module, be sure to ground your body and any electrical
equipment you may be using. We strongly recommend the use of anti static mats
( made of rubber ), to protect work tables against the hazards of electrical shock.
2. Avoid the use of work clothing made of synthetic fibers. We recommend cotton
clothing or other conductivity-treated fibers.
3. Slowly and carefully remove the protective film from the LCD module, since this
operation can generate static electricity.
3) When the LCD module alone must be stored for long periods of time:
1. Protect the modules from high temperature and humidity.
2. Keep the modules out of direct sunlight or direct exposure to ultraviolet rays.
3. Protect the modules from excessive external forces.
4) Use the module with a power supply that is equipped with an overcurrent protector
circuit,since the module is not provided with this protective feature.
5) Do not ingest the LCD fluid itself should it leak out of a damaged LCD module. Should
hands or clothing come in contact with LCD fluid, wash immediately with soap.
6) Conductivity is not guaranteed for models that use metal holders where solder
connections between the metal holder and the PCB are not used. Please contact us
to discuss appropriate ways to assure conductivity.
7) For models which use CFL:
1. High voltage of 1000V or greater is applied to the CFL cable connector area.
Care should be taken not to touch connection areas to avoid burns.
2. Protect CFL cables from rubbing against the unit and thus causing the wire jacket to
become worn.
3. The use of CFLs for extended periods of time at low temperatures will significantly
shorten their service life.
8) For models which use touch panels:
1. Do not stack up modules since they can be damaged by components on neighboring
modules.
2. Do not place heavy objects on top of the product. This could cause glass breakage.
9) For models which use COG,TAB,or COF:
1. The mechanical strength of the product is low since the IC chip faces out unprotected
from the rear. Be sure to protect the rear of the IC chip from external forces.
2. Given the fact that the rear of the IC chip is left exposed, in order to protect the unit
from electrical damage, avoid installation configurations in which the rear of the IC
chip runs the risk of making any electrical contact.
DMC40457NY-LY-B-CKN (CK) No.2005-0059 OPTREX CORPORATION Page 16/16
10) Models which use flexible cable, heat seal, or TAB:
1. In order to maintain reliability, do not touch or hold by the connector area.
2. Avoid any bending, pulling, or other excessive force, which can result in broken
connections.
11) In case of buffer material such as cushion / gasket is assembled into LCD module,
it may have an adverse effect on connecting parts ( LCD panel-TCP / HEAT SEAL / FPC /
etc., PCB-TCP / HEAT SEAL / FPC etc., TCP-HEAT SEAL, TCP-FPC, HEAT SEAL-FPC,
etc.,) depending on its materials.
Please check and evaluate these materials carefully before use.
12) In case of acrylic plate is attached to front side of LCD panel, cloudiness ( very small
cracks ) can occur on acrylic plate, being influenced by some components generated
from polarizer film..
Please check and evaluate those acrylic materials carefully before use.
11. Warranty
This product has been manufactured to your company’s specifications as a part for use in
your company’s general electronic products. It is guaranteed to perform according to
delivery specifications. For any other use apart from general electronic equipment, we
cannot take responsibility if the product is used in medical devices, nuclear power control
equipment, aerospace equipment, fire and security systems, or any other applications in
which there is a direct risk to human life and where extremely high levels of reliability are
required. If the product is to be used in any of the above applications, we will need to enter
into a separate product liability agreement.
1. We cannot accept responsibility for any defect, which may arise from additional
manufacturing of the product (including disassembly and reassembly), after
product delivery.
2. We cannot accept responsibility for any defect, which may arise after the application
of strong external force to the product.
3. We cannot accept responsibility for any defect, which may arise due to the application
of static electricity after the product has passed your company’s acceptance inspection
procedures.
4. When the product is in CFL models, CFL service life and brightness will vary
According to the performance of the inverter used, leaks, etc. We cannot accept
responsibility for product performance, reliability, or defect, which may arise.
5. We cannot accept responsibility for intellectual property of a third party, which may
arise through the application of our product to your assembly with exception to those
issues relating directly to the structure or method of manufacturing of our product.
6. Optrex will not be held responsible for any quality guarantee issue for defect products
judged as Optrex-origin longer than 2 (two) years from Optrex production or 1(one)
year from Optrex, Optrex America, Optrex Europe delivery which ever comes later.