DV4018 Densitron Corporation, DV4018 Datasheet
DV4018
Manufacturer Part Number
DV4018
Description
40x2 LCD module with optional backlight
Manufacturer
Densitron Corporation
Datasheet
1.DV4018.pdf
(10 pages)
These drawings and specifications are
the property of DV3 Displays Ltd and
may not be reproduced, copied or used
without written permission
1.
2.
3.
4.
Notes: (unless otherwise specified)
Dimensions are mm
Unless otherwise
Tolerances are:
0.XX =
0.X = 0.5
Specification subject to change without notice.
All dimensions and specifications apply to standard modules. This information may vary for modules with optional
features.
All dimensions are in millimetres.
Precautions: These precautions apply equally to modules from all makers, not just Densitron. Violation of these
guidelines may void the warranty and can cause problems ranging from erratic operation to catastrophic display
failure.
specified:
X = 3
Handling precautions:
Power supply precautions:
Operating precautions:
Mechanical / Environmental precautions:
0.05
This device is susceptible to Electro-Static Discharge (ESD) damage. Observe Anti-Static precautions.
Identify and, at all times, observe absolute maximum ratings for both logic and LC drivers. Note that there is some
variance between models.
Prevent the application of reverse polarity to VDD and VSS, however briefly.
Use a clean power source free from transients. Power up conditions are occasionally “jolting” and may exceed the
maximum ratings of the module.
The +5V 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.
DO NOT install a capacitor between the VO (contrast) pin and ground. VDD must, at all times, exceed the VO voltage
level. The capacitor combines with the contrast potentiometer to form an R-C network which “holds -up” VO, at power-
down, possibly damaging the module.
DO NOT plug or unplug the module when the system is powered up.
Minimise the cable length between the module and host MPU. (Recommended max. length 30 cm).
For models with EL backlights, do not disable the backlight by interrupting the HV line. Unloaded inverters produce
voltage extremes that may arc within a cable or at the display.
Operate the module within the limits of the modules temperature specifications.
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. Densitron recommends the use of Kester “245” no-clean
solder.
Mount the module so that it is free from torque and mechanical stress.
Surface of LCD panel should not be touched or scratched. The display front surface is an easily scratched, plastic
polariser. Avoid contact and clean only when necessary with soft, absorbent cotton dampened with petroleum
benzene.
ALWAYS employ anti-static procedure while handling the module.
Prevent moisture build-up upon the module and observe the environmental constraints for storage temperature and
humidity.
DO NOT store in direct sunlight.
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.
DRAWN
CHECKED
ISSUED
APPROVALS
DATE
REV.
DV3 Displays Ltd
Europe: +44 1959 542000
TITLE: 40x2 LCD module with optional backlight
DWG.NO.
www.dv3displays.com
USA: +1 562 941 5000
Asia: +81 33767 9701
DESCRIPTION
DV2018 and DV4018
DV3 Displays Ltd
BIGGIN HILL, ENGLAND
REVISIONS
DATE
SHEET 1 of 8
APPROVED
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DV4018 Summary of contents
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... 0.X = 0.5 ISSUED 0.XX = 0.05 REV. DESCRIPTION DV3 Displays Ltd www.dv3displays.com Europe: +44 1959 542000 USA: +1 562 941 5000 Asia: +81 33767 9701 DATE DV3 Displays Ltd TITLE: 40x2 LCD module with optional backlight DV2018 and DV4018 DWG.NO. REVISIONS DATE BIGGIN HILL, ENGLAND APPROVED SHEET ...
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