|
|
| |
 |
|
|
| |
| I) Gerenal information for 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. |
| |
|
|
| |
|
| |
|
| |
|
| |
| II) 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. |
|
| |
|
| |
|
| |
|
| |
| III) 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. |
|
| |
|
| |
|
| |
|
| |
| IV) 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¢XC ¡Ó 10¢XC.
- 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 dur 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 electoluminescent panel from the
PC board, be sure the solder has completely melted, the soldered
pad on
the PC board could be damaged. |
|
| |
|
| |
|
| |
|
| |
| V) 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¢XC , 50% RH. |
| (6) |
When turning the power on, input each signal after
the positive/negative voltage becomes stable. |
| |
 |
|
| |
|
| |
|
| |
|
| |
| 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 dessicant.
|
| (2) |
Store them in a dark place. Do not expose to sunlight
or fluorescent light, keep the temperature between 0¢XC and 35¢XC. |
| (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¢XC.
- Should not be left for more than 48hrs. at -20¢XC. |
|
| |
|
| |
| (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 leakes out of a damaged glass cell
and comes in contact with the hands, wash off thoroughly with soap
and water. |
|
| |
|
| |
|
| |
|
