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128240D-RGB-Series

128240D-RGB-Series

Product catalog summary

General Specification:
The 128240D-RGB Series LCD Module features a 240 x 128 dot display with a dot size of 0.325 x 0.325 mm. The view area is 92.0 mm x 53.0 mm, and the module size is 98.7 mm x 67.7 mm x 9.5 mm. It uses an FSTN LCD type with a transflective polarizer and a view angle of 6/12 o'clock. The backlight is LED with RGB color, requiring an external power driver. The controller and LCD driver is ST7529-G, with a driving method of 1/144 Duty, 1/12 Bias.

Absolute Maximum Ratings:
Power supply for logic ranges from -0.5 to 4.0 V, and for LCD from -0.5 to 20.0 V. Input voltage should be between -0.5 and VDD+0.5 V. LED backlight supply voltage is 3.2 V. Operating temperatures range from 0 to 50°C, with storage temperatures from -10 to 60°C. Wide operating temperatures range from -20 to 70°C, and wide storage temperatures from -30 to 80°C.

Electrical Characteristics:
At 25°C and VDD=3.0V±5%, the power supply for LCM is between 2.85 and 3.15 V. Input voltage levels are VIL from Vss to 0.3VDD and VIH from 0.7VDD to VDD. The supply current for LCM is typically 2.0 mA.

Electro-Optical Characteristics:
Recommended operating voltage (VLCD) at 25°C is between 14 and 15 V. Response times at 25°C are 240 ms for Tr and 200 ms for Tf. Viewing angles at 25°C are 40° for Φ=0°, 35° for Φ=180°, 30° for Φ=90°, and 30° for Φ=270°.

Backlight Specification:
The backlight uses 6 SMT LEDs with a forward voltage of 3.2 V. Average luminous intensity is 50 cd/m² for red, 160 cd/m² for green, and 45 cd/m² for blue.

Quality Guarantee:
Inspection includes functional tests, appearance inspections, and packing specifications. Sampling follows MIL-STD-105D with a major defect rate of 0.65% and a minor defect rate of 2.5%.

Precautions for Using LCD Modules:
Handle with care to avoid ESD damage and mechanical shock. Avoid excessive force on the display surface and use appropriate solvents for cleaning. Ensure proper grounding during assembly to prevent static electricity damage.

Operating Precautions:

Avoid plugging or unplugging the module while powered.
Minimize cable length between the module and host MPU.
Do not disable EL backlights by interrupting the HV line.
Operate within specified temperature limits.

Mechanical/Environmental Precautions:

Improper soldering can cause issues; avoid flux cleaners.
Mount the module to avoid torque and stress.
Avoid touching or scratching the LCD panel.
Use anti-static procedures during handling.
Prevent moisture build-up and adhere to storage conditions.
Avoid direct sunlight exposure.
Handle liquid crystal material with care.

Storage Precautions:

Avoid direct sunlight and fluorescent light exposure.
Store in conditions similar to shipping conditions.

Using LCD Modules:

Handle with care to avoid damage to glass and polarizers.
Use recommended cleaning agents and methods.
Avoid prolonged contact with water or oil.
Prevent condensation and handle with care to avoid damage.

Installing LCD Modules:

Ensure proper spacing to avoid stress on the module.

Handling Precautions:

Avoid excessive shocks and modifications.
Do not alter the metal frame or PCB.

Electro-Static Discharge Control:

Ground yourself when handling the module.
Ensure the module and body have the same electric potential.
Use grounded tools to minimize static discharge.

Soldering Precautions:

Follow specified temperature and time guidelines.
Protect the LCD surface during soldering.

Operation Precautions:

Adjust voltage for optimal viewing angle.
Avoid exceeding voltage limits to prolong life.
Be aware of temperature effects on response time.

Storage:

Store in sealed bags away from light and extreme temperatures.

Safety:

Dispose of damaged LCDs properly.
Wash off any leaked liquid crystal material.

Limited Warranty:

One-year warranty for functional defects.
Cosmetic defects must be reported within 90 days.

Return Policy:

Warranty void if precautions are disregarded.
Modules must be returned with a description of defects.

Revision Record:

Version 1.0: Initial revision (29 July 2008).
Version 1.1: Added remark (2 October 2008).
Version 1.2: Corrected VLCD voltage (12 December 2011).

Catalog excerpts

Website: www.displaytech.com.hk Product: 128240D-RGB Series LCD Module (240 x 128 DOTS)

Open the catalog to page 1

Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 2 of 21 ■ ABSOLUTE MAXIMUM RATINGS ■ PRECAUTIONS FOR USING LCD MODULES 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.

Open the catalog to page 2

Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 3 of 21 • When the loading of LCD panel is heavier, the performance of booster will not be in a good working condition. The user may set the BOOSTER EFFICIENCY level to be higher and only a little bit more current needed.

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 4 of 21 Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 4 of 21 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...

Open the catalog to page 4

Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 5 of 21 NOTE 3: CURRENT CONSUMPTION (I LCD) Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 5 of 21 Conditions:l.Driving waveform: static waveform. 2.Voltage applied to all segments NOTE 4: RESPONSE TIME (Tr, Tf) NOTE 5: CONTRAST RATIO (CR) Measuring Methode Of Capacitance Voltage applied to all segments.

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Displaytech Ltd  BLOCK DIAGRAM

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 11 of 21 ♦ ABSOLUTE MAXIMUM RATING TESTING POINTS CIRCUIT DIAGRAM 1. AVERAGE LUMINOUS INTENSITY IS THE AVERAGE VALUE OF THE NINE INDICATED POINTS AS SHOWN. 2. MEASUREMENT INSTRUMENT: BM-7, APERTURE: ' 10mm.

Open the catalog to page 11

Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 12 of 21 • FUNCTION TEST • APPEARANCE INSPECTION • PACKING SPECIFICTION • 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. • SAMPLING METHOD • SAMPLING PLAN • MAJOR DEFECT • MINOR DEFECT • GENERAL LEVEL 0.65% (MAJOR) 2.5% (MINOR) II/NORMAL View area Viewing boundary

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 13 of 21 1) FUNCTIONAL TEST STANDARD Inspection Standard Description Defect type Display wrong pattern Display segment open Dimsegment I Dimsegment Reject Wrong LCD viewing direction Pattern parallelism

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 14 of 21

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 15 of 21 Standard description of inspection Defect type Line defect Finger print PCB/COB specification PCB deformity Deformity at PCB edge, damage circuit. Damage excess 2x2mm at the PCB corner Scratch on PCB coat/leakage coat on PCB surface Open circuit Color different from one side to another side. Repaired solder mask area Scratch circuit, damage Circuit Bezel specification

Open the catalog to page 15

Standard description of inspection h≦0.01 mm/mm h>0.01 mm/mm Standard Defect type Accept Reject MIN 3.10 Void gap between bezel and PCB Bezel clip incorrectly 4 Solder specification 4.1 Wrong component 4.2 Broken component Reject Reject Component legs extend beyond the pad and Legs >pad distance(w) on solder area >W2 Component legs extend beyond the pad and Legs >pad distance(w) on solder area 1/4W 4.5 CHIP components hoist≦0.5mm 4.6 CHIP components hoist>0.5mm Accept Reject

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 17 of 21

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 18 of 21 ■ PRECAUTIONS FOR USING LCD MODULES 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...

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 19 of 21 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. 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...

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 20 of 21 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...

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Displaytech Ltd LCD MODULE 128240D-RGB SERIES Version : 1.2 P 21 of 21 When storing LCDs as spares for some years, the following precautions 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.) • Do not leave them for more than 168hrs. at 60°C. • Should not be left for...

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128240D-RGB-Series

128240D-RGB-Series

Catalog excerpts

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