64128K Datasheet, PDF (18/22 Pages) List of Unclassifed Manufacturers – ABSOLUTE MAXIMUM RATINGS

Displaytech Ltd _{LCD MODULE 64128K SERIES Version : 1.2 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 “jolting” and 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. Don’t 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