64128M-RGB Series Specification Datasheet by Displaytech

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Efl Displaytech Ltd? a seacomp company
Website: www.displaytech.com.hk
LCD Module
Product Specification
Product: 64128M-RGB Series LCD Module (128 x 64 DOTS)
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 2 of 21
PRODUCT SPECIFICATIONS
n GENERAL SPECIFICATION
n ABSOLUTE MAXIMUM RATINGS
n ELECTRICAL CHARACTERISTICS
n ELECTRO-OPTICAL CHARACTERISTICS
n BLOCK DIAGRAM
n MECHANICAL DRAWING
n BACKLIGHT DRAWING
n BACKLIGHT SPECIFICATION
n QUALITY GUARANTEE
n PRECAUTIONS FOR USING LCD MODULES
n USING LCD MODULES
n REVISION RECORD
Contents in this document are subject to change without notice. No part of this document may be
reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose,
without the express written permission of Displaytech Ltd.
10 June 2008.
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 3 of 21
n GENERAL SPECIFICATION
Contents
128 x 64 DOTS
0.48mm x 0.48mm
70.00mm x 40.00mm
77.40mm x 52.40mm x 10.50mm
FSTN
Transflective
6 o’clock / 12 oclock
LED
External Power
RGB
ST7565R-G
1/65 Duty, 1/9 Bias
n ABSOLUTE MAXIMUN RATINGS (Ta=25°C VSS=0V)
ITEM
SYMBOL
MIN.
TYP.
MAX.
UNIT
Power Supply for Logic
VDD-VSS
-0.3
---
3.6
V
Power Supply for LCD
V0-VSS
-0.3
---
13.5
V
Input Voltage
VIN
-0.3
---
VDD+0.3
V
Supply Voltage for LED Backlight
VLED
---
3.2
---
V
Normal Operating Temperature
Top
0
---
50
°C
Normal Storage Temperature
Tst
-10
---
60
°C
Wide Operating Temperature
Top
-20
---
70
°C
Wide Storage Temperature
Tst
-30
---
80
°C
n ELECTRICAL CHARACTERISTICS (Ta=25°C, VDD=3.0V)
ITEM
SYMBOL
CONDITION
MIN.
TYP.
MAX.
UNIT
Power Supply for LCM
VDD-VSS
---
2.85
3.0
3.15
Volt
Input Voltage
VIL
L level
Vss
---
0.2VDD
Volt
VIH
H level
0.8VDD
---
VDD
Volt
LCD Module Driving
Voltage
VO-VSS
---
---
---
---
Volt
25°C
---
9.0
---
---
---
---
---
Supply Current for
LCM
IDD
VDD=3.0V
---
0.5
---
mA
Ie
---
---
---
---
ILED
VLED=3.2V
---
80
---
| T\ u T! u
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 4 of 21
n ELECTRO-OPTICAL CHARACTERISTICS
NO
Item
Symbol
Measuring
Condition
STD.Value
Unit
Remark
°C
Min
Typ
Max
1
Recommended
Operating
Voltage
VLCD
= 0
Φ= 0
25
---
9.0
---
V
Note1
Note2
2
Operating
Voltage
Vth
= 0
Φ= 0
0
---
---
---
25
---
9.0
---
40
---
---
---
Vsat
= 0
Φ= 0
0
---
---
---
25
---
---
---
40
---
---
---
3
Response time
Tr
= 0
Φ= 10
0
---
---
---
ms
Note4
25
---
218
268
40
---
---
---
Tf
= 0
Φ= 10
0
---
---
---
25
---
115
165
40
---
---
---
4
Viewing
Angle (Cr2)
Φ=0°
25
-10
10
40
Deg
Note1
Φ=180°
25
30
10
---
Φ=90°
25
30
---
---
Φ=270°
25
---
---
---
5
Current
Consumption
ILCD
Hz=64
25
---
82
---
uA
Note3
NOTE 1: DEFINITION OF VIEWING ANGLE AND DIRECTION
NOTE 2: THERSHOLD VOLTAGE AND SATURATION VOLTAGE
Vth: The voltage Vop which the transmission rate of segment is 90%(positive) or 10%(negative) of saturated value on conditions
of the selected waveform. (non-selected waveform is opposition)
Vsat: The voltage Vop which the transmission rate of segment is 10%(positive) or 10%(negative) of saturated value on
conditions of the selected waveform. (non-selected waveform is opposition)
Detector
3H Φ =90°
Φ
6H Φ =0°
Z =0°
9H Φ =270°
12H Φ =180°
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 5 of 21
NOTE 3: CURRENT CONSUMPTION (I LCD)
NOTE 4: RESPONSE TIME (Tr, Tf)
NOTE 5: CONTRAST RATIO (CR)
5.1 POSITIVE TYPE:
CONTRAST RATIO =
BRIGHTNESS AT VOP (NON-SELECTED)
BRIGHTNESS AT VOP (SELECTED)
5.2 NEGATIVE TYPE:
CONTRAST RATIO =
BRIGHTNESS AT VOP (SELECTED)
BRIGHTNESS AT VOP (NON-SELECTED)
NOTE 6: CAPACITANCE (C)
Conditions:
Voltage applied to all segments.
Conditions:
1.Driving waveform: static waveform. 2.Voltage applied to all segments
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 6 of 21
n BLOCK DIAGRAM
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 7 of 21
n MECHANCIAL DRAWING
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 8 of 21
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 9 of 21
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 10 of 21
n BACKLIGHT DRAWING
in.‘
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 11 of 21
n BACKLIGHT SPECIFICATION
MECHANICAL SPECIFICATIONS
ITEM
NOMINAL DIMENSIONS
UNIT
OUTLINE SIZE (LxWxH)
77.40 x 52.40x 9.30
mm
VIEWING AREA (LxW)
72.00 x 41.00
mm
CONTACT PIN PITCH/LENGTH
NIL
mm
NO.OF LED SMT
4
---
ELECTRICAL/OPTICAL CHARACTERISTICS (Ta=25°C, If=80mA typ.)
MODE
PARAMETER
UNIT
COLOR
RED
PURE
GREEN
BLUE
---
CHROMATICITY COORDINATE
X=0.6933
Y=0.3000
X=0.1964
Y=0.7334
X=0.1415
Y=0.0619
---
FORWARD VOLTAGE (Vf)
3.2 typ
3.2 typ
3.2 typ
V
FORWARD CURRENT (If)
80
80
80
mA
AVERAGE LUMINOUS INTENSITY (Iv)
23
126
50
cd/m2
ABSOLUTE MAXIMUM RATING
ITEM
RED
PURE
GREEN
BLUE
UNIT
FORWARD CURRENT
120mA
120mA
120mA
If
REVERSE VOLTAGE
5V
5V
5V
Vr
POWER DISSIPATION
384mW
384mW
384mW
Pd
OPERATING TEMPERATURE
-20°C TO 70°C
Top
STORAGE TEMPERATURE
-30°C TO 80°C
Tstg
TESTING POINT CIRCUIT DIAGRAM
REMARK:
1. AVERAGE LUMINOUS INTENSITY IS THE AVERAGE VALUE OF THE NINE INDICATED POINTS AS
SHOWN.
2. MEASUREMENT INSTRUMENT: BM-7, APERTURE: 10mm.
/////////
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 12 of 21
n QUALITY GUARANTEE
PURPOSE: It is to define the inspection standard of LCD modules
PRODUCT STANDARD
1) INSPECTION AND TEST
FUNCTION TEST
APPEARANCE INSPECTION
PACKING SPECIFICTION
2) INSPECTION CONDITION
Put under the lamp (20w×2) at a distance 100mm from the LCD Modules.
Tilt upright 45 degree by the front (back) to inspect LCD appearance.
3) AQL INSPECTION LEVEL
SAMPLING METHOD : MIL-STD-105D
SAMPLING PLAN : SINGLE
MAJOR DEFECT : 0.65% (MAJOR)
MINOR DEFECT : 2.5% (MINOR)
GENERAL LEVEL : II/NORMAL
DISPLAY AREA DEFINITION:
LAMP
LCM
OPERATOR
Viewing boundary
View area
segmem LJ J; \ J; \
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 13 of 21
INSPECTION STANDARD
1) FUNCTIONAL TEST STANDARD
Item
Inspection Standard Description
Standard
Defect type
1
LCD has no display
Reject
MAJ
2
LCM display do not change
Reject
MAJ
3
Display wrong pattern
Reject
MAJ
4
Display segment open
Reject
MAJ
5
Display dim segment
Reject
MAJ
6
Wrong LCD viewing direction
Reject
MAJ
7
Dim Display
See
sample
MAJ
8
LCD color variation
See
sample
MAJ
9
Pattern parallelism
Acceptable range
L
<a
b
Accept
20mm
| 0.43° |
0.15mm
30mm
| 0.38° |
0.2mm
40mm
| 0.43° |
0.3mm
50mm
| 0.40° |
0.35mm
60mm
| 0.43° |
0.45mm
70mm
| 0.41° |
0.50mm
80mm
| 0.43° |
0.60mm
90mm
| 0.41° |
0.65mm
100mm
| 0.43° |
0.75mm
10
LCD display
Pin hole
Standard
Ø=
2
yx +
QTY
Ø0.25
1
Accept
Ø>0.25
1
Accept
Ø<
4
1
W
1
Accept
Ø>
4
1
W
1
Reject
MIN
Missing
segment
Missing
segment
Dim
segment
Dim
segment
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 14 of 21
Item
Inspection Standard Description
Standard
Defect type
11
LCD display
Broken segment(dots)
Draw
Standard
X
y
QTY
4
1
b
4
1
a
1
Reject
MIN
(X or y) 0.2mm
1
Reject
MIN
4
1
b
4
1
a
1
Accept
5
1
b
5
1
a
2
Accept
12
LCD display
Black spot or
White spot
Ø=
2
yx +
QTY
Ø<0.10
Accept
0.1<Ø0.20
2
Accept
0.20Ø<0.25
1
Accept
0.25< Ø0.4
0
Reject
MIN
Ø>0.4
0
Reject
MAJ
13
LCD display excess black line or white line
Black line/white line(L×w)mm
QTY
(L1.0)×(W0.025)
2
Accept
(1.0<L1.5)×(W一‧0.025)
1
Accept
(L>1.5)×(W0.025)
0
Reject
MIN
(L>2)×(W>0.025)
0
Reject
MAJ
14
Backlight not function
Reject
MAJ
15
LED not function or dim
Reject
MIN
16
Backlight defect (dirt, scratch)
Reject
MIN
2) COSMETIC INSPECTION STANDARD
Item
Standard description of inspection
Standard
Defect type
1
LCD inspection item
1.1
LCD color variation
See
sample
MIN
1.2
LCD broken
Reject
MAJ
1.3
Wrong polarizer of LCD
Reject
MAJ
1.4
Spot on LCD surface
Reject
MAJ
1.5
Scratch on LCD
Scratch = Ø
QTY
Ø<0.1
Except
Accept
0.1ø0.15
2
Accept
0.15< ø0.25
1
Accept
Ø>0.25
1
Reject
MIN
1.6
LCD scratch
Scratch depth see sample
Scratch =L
scratch =W
QTY
W0.015
Accept
<0.5
W0.02
2
Accept
<1.0
W0.03
1
Accept
1.0
W0.03
1
Reject
MIN
1.7
White or black spot on LCD
Ø=
2
yx +
QTY
Ø<0.1
Accept
0.1Ø<0.2
2
Accept
0.2Ø0.25
1
Accept
Ø>0.25
1
Reject
MIN
Bevy point
-
Reject
MIN
Ø=
2
yx +
x
y
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 15 of 21
Item
Standard description of inspection
Standard
Defect type
1.8
Black line in LCD
(L)
(W)
QTY
L1.0
W0.025
2
Accept
1.0<11.5
W0.025
1
Accept
1.5<L
W>0.025
1
Reject
MIN
1.9
Round air bubble
Size
QTY
Ø<0.15
2
Accept
0.15Ø0.25
1
Accept
Ø>0.25
0
Reject
MIN
1.10
Line defect
(L)
(W)
QTY
L<0.5
W<0.02
2
Accept
L<1.0
W<0.03
1
Accept
L1.0
W0.3
0
Reject
MIN
1.11
Finger print
Reject
MIN
2
PCB/COB specification
2.1
PCB deformity
L
H
6.0mm
1.5mm
Accept
>6.0mm
1.5mm
Reject
MIN
<6.0mm
>1.5mm
Reject
MIN
>6.0mm
>1.5mm
Reject
MIN
2.2
Deformity at PCB edge, damage circuit.
Reject
MAJ
2.3
Convex at PCB edge
L
H
6.0mm
1.5mm
Accept
>6.0mm
1.5mm
Reject
MIN
<6.0mm
>1.5mm
Reject
MIN
>6.0mm
>1.5mm
Reject
MIN
2.4
Damage excess 2x2mm at the PCB corner
Reject
MIN
2.5
Scratch on PCB surface
See sample
MIN
2.6
Scratch on PCB coat/leakage coat on PCB surface
Reject
MAJ
2.7
Open circuit
Reject
MAJ
2.8
PCB PTH open
Reject
MAJ
2.9
Repair PCB PTH
QTY2PCS
Accept
QTY3PCS
Reject
MAJ
2.10
Color different from one side to another side.
Reject
MIN
2.11
Repaired solder mask area
30mm2
Accept
30mm2
Reject
MIN
2.12
Scratch circuit, damage
Circuit
a1/2w or b<w
Accept
a>1/2w or b>w
Reject
3
Bezel specification
3.1
Wrong Materials
MAJ
3.2
Incorrect dimension
MAJ
3.3
Bezel broken
MAJ
3.4
Rust on Bezel
MAJ
3.5
Hole or dirty on oil
Paint surface
Size
cm2/per
Top surface
Ø0.3
2
Accept
0.3<Ø0.5
1
Accept
Ø>0.5
0
Reject
MIN
Side
Ø0.5
2
Accept
0.5<Ø0.8
1
Accept
Ø>0.8
0
Reject
MIN
’~// // // // // // N G
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 16 of 21
Item
Standard description of inspection
Standard
Defect type
3.6
Bezel bow or twist
h0.01 mm/mm
Accept
h>0.01 mm/mm
Reject
MIN
3.7
d1-d2tolerance
Accept
d1-d2>tolerance
Reject
MIN
3.8
Scratch on bezel
Face
Accept
QTY
L
W
Not
defined
See
Sample
-
W0.15
L3
W0.20
2
L2
W0.3
2
-
W>0.3
side
Accept
QTY
L
W
See
Sample
-
W0.2
except
L3
W0.25
2
L2
W0.3
2
3.9
Twist angle α=45º+5º
Accept
3.10
Void gap between bezel and PCB
Reject
MIN
3.11
Bezel clip incorrectly
Reject
MIN
4
Solder specification
4.1
Wrong component
Reject
MAJ
4.2
Broken component
Reject
MAJ
4.3
Mis-alignment
Component legs extend beyond the pad and
Legs >pad distance(w) on solder area >W2
Accept
Component legs extend beyond the pad and
Legs >pad distance(w) on solder area <W2
Reject
MIN
Component
Offset
Solder legs offset distance L<solder legs
1/4W
Accept
Solder legs offset L>1/4W
Reject
MIN
4.4
Component assembly defect
Reject
MIN
4.5
CHIP components hoist0.5mm
Accept
4.6
CHIP components hoist>0.5mm
Reject
MIN
NG
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 17 of 21
Item
Standard description of inspection
Standard
Defect type
4.7
Components hoist
h2.0mm
Accept
h>2.0mm
Reject
MIN
4.8
Switch (socket) hoist
h0.5mm
Accept
h>0.5mm
Reject
MIN
4.9
Components cold solder or incomplete solder
Reject
MAJ
4.10
Solder PAD tilt up, but height (h) less than
Solder PAD thickness (a)
Accept
4.11
Excess solder above components
Reject
Min
4.12
Insufficient solder below
components height or less than diameter
Reject
MIN
4.13
Solder area less than soldering PAD Area by 2/3
Reject
MIN
4.14
Trimmed pin length beyond 0.09inch (2.3mm)
Reject
Min
5
Packing specification
5.1
Wrong carton mark .
Reject
MAJ
5.2
Carton mark problem
Reject
MIN
5.3
Carton damage extend than 150mm
Reject
MAJ
5.4
Carton damage, scratch more 50mm, less 150mm.
Reject
MIN
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 18 of 21
n PRECAUTIONS FOR USING LCD MODULES
HANDLING PRECAUTIONS
1. This device is susceptible to Electro-Static Discharge (ESD) damage. Observe Anti-Static precautions.
2. The display panel is made of glass. Do not subject it to a mechanical shock by dropping it or impact.
3. If the display panel is damaged and the liquid crystal substance leaks out, be sure not to get any in your mouth. If the
substance contacts your skin or clothes, wash it off using soap and water.
4. Do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to vary.
5. The polarizer covering the display surface of the LCD module is soft and easily scratched. Handle this polarizer carefully.
6. If the display surface becomes contaminated, breathe on the surface and gently wipe it with a soft dry cloth. If it is heavily
contaminated, moisten cloth with one of the following solvents :
Isopropyl alcohol
Ethyl alcohol
7. Solvents other than those above-mentioned may damage the polarizer. Especially, do not use the following.
Water
Ketone
Aromatic solvents
8. Exercise care to minimize corrosion of the electrode. Corrosion of the electrodes is accelerated by water droplets, moisture
condensation or a current flow in a high-humidity environment.
9. Install the LCD Module by using the mounting holes. When mounting the LCD module make sure it is free of twisting,
warping and distortion. In particular, do not forcibly pull or bend the I/O cable or the backlight cable.
10. Do not attempt to disassemble or process the LCD module.
11. NC terminal should be open. Do not connect anything.
12. If the logic circuit power is off, do not apply the input signals.
13. To prevent destruction of the elements by static electricity, be careful to maintain an optimum work environment.
Be sure to ground the body when handling the LCD modules.
Tools required for assembling, such as soldering irons, must be properly grounded.
To reduce the amount of static electricity generated, do not conduct assembling and other work under dry conditions.
The LCD module is coated with a film to protect the display surface. Exercise care when peeling off this protective film
since static electricity may be generated.
POWER SUPPLY PRECAUTIONS:
1. Identify and, at all times, observe absolute maximum ratings for both logic and LC drivers. Note that there is some variance
between models.
2. Prevent the application of reverse polarity to VDD and VSS, however briefly.
3. Use a clean power source free from transients. Power-up conditions are occasionally joltingand may exceed the maximum
ratings of the modules.
4. The VDD power of the module should also supply the power to all devices that may access the display. Dont allow the data
bus to be driven when the logic supply to the module is turned off.
OPERATING PRECAUTIONS:
1. DO NOT plug or unplug the module when the system is powered up.
2. Minimize the cable length between the module and host MPU.
3. For models with EL backlights, do not disable the backlight by interrupting the HV line. Unload inverters produce voltage
extremes that may arc within a cable or at the display.
4. Operate the module within the limits of the modules temperature specifications.
MECHANICAL/ENVIRONMENTAL PRECAUTIONS:
1. Improper soldering is the major cause of module difficulty. Use of flux cleaner is not recommended as they may seep
under the elastomeric connection and cause display failure.
2. Mount the module so that it is free from torque and mechanical stress.
3. Surface of the LCD panel should not be touched or scratched. The display front surface is an easily scratched, plastic
polarizer. Avoid contact and clean only when necessary with soft, absorbent cotton dampened with petroleum benzene.
4. Always employ anti-static procedure while handling the module.
5. Prevent moisture build-up upon the module and observe the environmental constraints for storage temperature and humidity.
6. Do not store in direct sunlight
7. If leakage of the liquid crystal material should occur, avoid contact with this material, particularly ingestion. If the body
or clothing becomes contaminated by the liquid crystal material, wash thoroughly with water and soap
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
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Storage Precautions
When storing the LCD modules, avoid exposure to direct sunlight or to the light of fluorescent lamps. Keep the modules in
bags (avoid high temperature / high humidity and low temperatures below 0°C). Whenever possible, the LCD modules should be
stored in the same conditions in which they were shipped from our company.
Others
Liquid crystals solidify under low temperature (below the storage temperature range) leading to defective orientation or the
generation of air bubbles (black or white). Air bubbles may also be generated if the module is subject to a low temperature.
If the LCD modules have been operating for a long time showing the same display patterns, the display patterns may
remain on the screen as ghost images and a slight contrast irregularity may also appear. A normal operating status can be
regained by suspending use for some time. It should be noted that this phenomenon does not adversely affect performance
reliability.
To minimize the performance degradation of the LCD modules resulting from destruction caused by static electricity etc.,
exercise care to avoid holding the following sections when handling the modules.
Exposed area of the printed circuit board.
Terminal electrode sections.
n USING LCD MODULES
Liquid Crystal Display Modules
LCD is composed of glass and polarizer. Pay attention to the following items when handling.
1. Please keep the temperature within specified range for use and storage. Polarization degradation, bubble generation or
polarizer peel-off may occur with high temperature and high humidity.
2. Do not touch, push or rub the exposed polarizers with anything harder than an HB pencil lead (glass, tweezers, etc.).
3. N-hexane is recommended for cleaning the adhesives used to attach front/rear polarizers and reflectors made of organic
substances which will be damaged by chemicals such as acetone, toluene, ethanol and isopropylalcohol.
4. When the display surface becomes dusty, wipe gently with absorbent cotton or other soft material like chamois soaked in
petroleum benzin. Do not scrub hard to avoid damaging the display surface.
5. Wipe off saliva or water drops immediately, contact with water over a long period of time may cause deformation or color
fading.
6. Avoid contacting oil and fats.
7. Condensation on the surface and contact with terminals due to cold will damage, stain or dirty the polarizers. After products
are tested at low temperature they must be warmed up in a container before coming is contacting with room temperature air.
8. Do not put or attach anything on the display area to avoid leaving marks on.
9. Do not touch the display with bare hands. This will stain the display area and degradate insulation between terminals (some
cosmetics are determinated to the polarizers).
10. As glass is fragile. It tends to become or chipped during handling especially on the edges. Please avoid dropping or jarring.
Installing LCD Modules
The hole in the printed circuit board is used to fix LCM as shown in the picture below. Attend to the following items when
installing the LCM.
1. Cover the surface with a transparent protective plate to protect the polarizer and LC cell.
2. When assembling the LCM into other equipment, the spacer to the bit between the LCM and the fitting plate should have
enough height to avoid causing stress to the module surface, refer to the individual specifications for measurements. The
measurement tolerance should be ±0.1mm.
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Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
P 20 of 21
Precaution for Handing LCD Modules
Since LCM has been assembled and adjusted with a high degree of precision, avoid applying excessive shocks to the
module or making any alterations or modifications to it.
1. Do not alter, modify or change the shape of the tab on the metal frame.
2. Do not make extra holes on the printed circuit board, modify its shape or change the positions of components to be attached.
3. Do not damage or modify the pattern writing on the printed circuit board.
4. Absolutely do not modify the zebra rubber strip (conductive rubber) or heat seal connector.
5. Except for soldering the interface, do not make any alterations or modifications with a soldering iron.
6. Do not drop, bend or twist LCM.
Electro-Static Discharge Control
Since this module uses a CMOS LSI, the same careful attention should be paid to electrostatic discharge as for an ordinary
CMOS IC.
1. Make certain that you are grounded when handing LCM.
2. Before remove LCM from its packing case or incorporating it into a set, be sure the module and your body have the same
electric potential.
3. When soldering the terminal of LCM, make certain the AC power source for the soldering iron does not leak.
4. When using an electric screwdriver to attach LCM, the screwdriver should be of ground potentiality to minimize as much as
possible any transmission of electromagnetic waves produced sparks coming from the commutator of the motor.
5. As far as possible make the electric potential of your work clothes and that of the work bench the ground potential.
6. To reduce the generation of static electricity be careful that the air in the work is not too dried. A relative humidity of
50%-60% is recommended.
Precaution for soldering to the LCM
1. Observe the following when soldering lead wire, connector cable and etc. to the LCM.
Soldering iron temperature : 280°C ± 10°C.
Soldering time : 3-4 sec.
Solder : eutectic solder.
If soldering flux is used, be sure to remove any remaining flux after finishing to soldering operation. (This does not apply
in the case of a non-halogen type of flux.) It is recommended that you protect the LCD surface with a cover during soldering to
prevent any damage due to flux spatters.
2. When soldering the electroluminescent panel and PC board, the panel and board should not be detached more than three
times. This maximum number is determined by the temperature and time conditions mentioned above, though there may be
some variance depending on the temperature of the soldering iron.
3. When remove the electroluminescent panel from the PC board, be sure the solder has completely melted, the soldered pad on
the PC board could be damaged.
Precautions for Operation
1. Viewing angle varies with the change of liquid crystal driving voltage (VO). Adjust VO to show the best contrast.
2. Driving the LCD in the voltage above the limit shortens its life.
3. Response time is greatly delayed at temperature below the operating temperature range. However, this does not mean the
LCD will be out of the order. It will recover when it returns to the specified temperature range.
4. If the display area is pushed hard during operation, the display will become abnormal. However, it will return to normal if it
is turned off and then back on.
5. Condensation on terminals can cause an electrochemical reaction disrupting the terminal circuit. Therefore, it must be used
under the relative condition of 40°C , 50% RH.
6. When turning the power on, input each signal after the positive/negative voltage becomes stable.
Displaytech Ltd
LCD MODULE
64128M-RGB SERIES
Version : 1.1
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Storage
When storing LCDs as spares for some years, the following precaution are necessary.
1. Store them in a sealed polyethylene bag. If properly sealed, there is no need for desiccant.
2. Store them in a dark place. Do not expose to sunlight or fluorescent light, keep the temperature between 0°C and 35°C.
3. The polarizer surface should not come in contact with any other objects. (We advise you to store them in the container in
which they were shipped.)
4. Environmental conditions :
Do not leave them for more than 168hrs. at 60°C.
Should not be left for more than 48hrs. at -20°C.
Safety
1. It is recommended to crush damaged or unnecessary LCDs into pieces and wash them off with solvents such as acetone and
ethanol, which should later be burned.
2. If any liquid leaks out of a damaged glass cell and comes in contact with the hands, wash off thoroughly with soap and
water.
Limited Warranty
Unless agreed between DISPLAYTECH and customer, DISPLAYTECH will replace or repair any of its LCD modules
which are found to be functionally defective when inspected in accordance with DISPLAYTECH LCD acceptance standards
(copies available upon request) for a period of one year from date of shipments. Cosmetic/visual defects must be returned to
DISPLAYTECH within 90 days of shipment. Confirmation of such date shall be based on freight documents. The warranty
liability of DISPLAYTECH limited to repair and/or replacement on the terms set forth above. DISPLAYTECH will not be
responsible for any subsequent or consequential events.
Return LCM under warranty
No warranty can be granted if the precautions stated above have been disregarded. The typical examples of violations are :
Broken LCD glass.
PCB eyelet’s damaged or modified.
PCB conductors damaged.
Circuit modified in any way, including addition of components.
PCB tampered with by grinding, engraving or painting varnish.
soldering to or modifying the bezel in any manner.
Module repairs will be invoiced to the customer upon mutual agreement. Modules must be returned with sufficient
description of the failures or defects. Any connectors or cable installed by the customer must be removed completely without
damaging the PCB eyelet’s, conductors and terminals.
n REVISION RECORD
VERSION
CHANGES
DATE
1.0
Initial revision
7 April 2008
1.1
Power Supply for Logic and LCD inside ABSOLUTE MAXIMUN RATINGS was
corrected
10 June 2008

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