LCD Character and LCM Caution for Operation



 
   
  LCD Character
1.Operating temperature and storage temperature£º
Operating temperature 0¡æ~50¡æ£¬storage temperature -20¡æ¡«70¡æ¡£
Wide rangeLCDoperating temperature -30¡æ¡«80¡æ£¬storage temperature -40¡æ¡«100¡æ.
2. Contrast£º
TN¡¡LCD£ºDUTY¡¡1¡«1/8£¬Cr > 5.
DUTY 1/8~1/16 (1/8 included)£¬Cr >3.
STN LCD£ºCr > 3 for blue and gray type
Cr¡µ5 for yellow, green, yellow and green type
3. Response time£º
TN LCD£ºRising time < 250ms;
Falling time < 300ms.
STN LCD£ºRising time<400ms;¡¡
Falling time < 400ms.
4. Viewing angle£º
TN LCD£ºDUTY 1~1/8¡µ 30¡ã;
DUTY 1/8~1/16£¬> 25¡ã.
STN LCD£ºDUTY > 1/64£¬> 50¡ã;
DUTY < =1/64£¬> 30¡ã.
5. Threshold Voltage£º
Minimum 0.7V for TN type under normal atmospheric temperature, minimum 0.8V for STN type.
Threshold voltage may rise if LCD has a wide range temperature.

LCM Caution for Operation

1. MOUNTING METHOD
The panel of the LCD module consists of two thin glass plates with polarizers which easily get damaged since the module is fixed by utilizing fitting holes in the printed circuit board. Extreme care should be taken when handling the LCD modules.
2. CAUTION OF LCD HANDLING & CLEANING
When cleaning the display surface. Use soft cloth with solvent (recommended as below) and wipe lightly.
-Isopropyl alcohol -Ethyl alcohol
Do not wipe the display surface with dry or hard materials that will damage the polarizers surface.
Do not use the following solvents:
-Water
-Ketones solvents
-Aromatics solvents
3.CAUTION AGAINST STATIC CHARGE
The LCD modules use C-MOS LSI drivers. So we recommend that you connect any unused input terminal to Vdd
or Vss, do not input any signals before power is turned on and ground your body, work/assembly table and asse
mbly equipment to protect against static electricity.
4.PACKAGING
Modules use LCD elements, Do not subject to excessive shocks by dropping the units.
-To prevent modules from degradation, do not operate or store them in sunshine or at high temperature/humidity.
5.CAUTION FOR OPERATION
It is indispensable to drive LCM within the specified voltage limit since the higher voltage than the limit will
shortens LCM life.Response time will be extremely delayed at lower temperature than in the specified operating
temperature range and on the other hand at higher temperature LCD will show dark color in them. However those
phenomena do not mean malfunction or out of order with LCD, which will come back in the specified operating
temperature range.
If the display area is pushed hard during operation. Some font will be abnormally displayed but it resumes normal
condition once turning off .
A slight dew depositing on terminals may cause Electro-chemical reaction resulting in terminal open circuit.
Under the maximum operating temperature, 50%RH or less is required
6 STORAGE
In the case of storing for a long period of time (for instance, for years) for the purpose of replacement use£¬ the
following ways are recommended
-Storage in a anti-static polyethylene bag with the opening sealed so as not to enter fresh air outside in it, and with
no desiccant.
-Placing in a dark place where neither exposure to direct sunlight nor to light, keeping temperature in the specified
storage
temperature range.
-Storing with no touch on polarizers surface by anything else. (it is recommended to store them as they have been
contained in the inner container ).

 
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