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64128L-Series

64128L-Series

Product catalog summary

General Specification:
The 64128L Series LCD Module features a 128 x 64 dot display with a dot size of 0.40mm x 0.40mm. The view area is 60.60mm x 33.10mm, and the module size is 68.80mm x 49.20mm x 8.50mm. It uses FSTN LCD type with a transflective polarizer mode and a view angle of 6 o'clock / 12 o'clock. The backlight is LED with an external power driver and white color. The controller and LCD driver is ST7565R-G, operating on a 1/65 duty and 1/9 bias driving method.

Absolute Maximum Ratings:
Power supply for logic ranges from -0.3V to 3.6V, and for LCD from -0.3V to 13.5V. The input voltage should be between -0.3V and VDD+0.3V. The LED backlight supply voltage is 3.2V. Operating temperatures range from 0°C to 50°C, with storage temperatures from -10°C to 60°C. Wide operating temperatures range from -20°C to 70°C, and wide storage temperatures from -30°C to 80°C.

Electrical Characteristics:
At 25°C and VDD=3.0V, the power supply for LCM is between 2.85V and 3.15V. Input voltage levels are VIL (low) at Vss to 0.2VDD and VIH (high) at 0.8VDD to VDD. The LCD module driving voltage is typically 9.0V at 25°C. The supply current for LCM is 0.5mA, and for LED backlight, it is 60mA.

Electro-Optical Characteristics:
The recommended operating voltage is 9.0V at 25°C. Response times are Tr (rise) at 218-268ms and Tf (fall) at 115-165ms. Viewing angles are specified at various degrees, with a contrast ratio defined for both positive and negative types.

Backlight Specification:
The backlight has nominal dimensions of 68.80 x 49.20 x 8.5 mm, with a viewing area of 61.60 x 34.10 mm. It uses 3 SMT LEDs with a forward voltage of 3.2V and an average luminous intensity of 168 cd/m². The absolute maximum ratings include a forward current of 90mA and a reverse voltage of 5V.

Quality Guarantee:
The inspection standard includes functional tests, appearance inspections, and packing specifications. The AQL inspection level follows MIL-STD-105D with major defects at 0.65% and minor defects at 2.5%.

Precautions for Using LCD Modules:
Handling precautions include ESD protection, avoiding mechanical shock, and careful handling of the polarizer. Power supply precautions emphasize observing maximum ratings and ensuring clean power sources. Operating precautions advise against plugging or unplugging the module when powered and minimizing cable length between the module and host MPU.

Mechanical/Environmental Precautions:
1. Avoid improper soldering and use of flux cleaner to prevent display failure.
2. Ensure the module is free from torque and mechanical stress.
3. Handle the LCD panel carefully to avoid scratches and clean with soft materials.
4. Use anti-static procedures and prevent moisture build-up.
5. Store away from direct sunlight and adhere to temperature and humidity constraints.
6. Avoid contact with liquid crystal material in case of leakage.

Storage Precautions:
1. Store LCD modules away from direct sunlight and fluorescent lamps.
2. Maintain storage conditions similar to shipping conditions.

Handling LCD Modules:
1. Maintain specified temperature ranges to prevent degradation.
2. Avoid touching polarizers with hard objects.
3. Use N-hexane for cleaning adhesives.
4. Prevent long-term contact with water and avoid oil and fats.
5. Handle glass carefully to avoid chipping.

Installing LCD Modules:
1. Use a protective plate to cover the surface.
2. Ensure proper spacing to avoid stress on the module surface.

Precaution for Handling LCD Modules:
1. Avoid altering or modifying the module.
2. Do not damage the printed circuit board or connectors.

Electro-Static Discharge Control:
1. Ground yourself when handling the module.
2. Ensure the module and body have the same electric potential.
3. Use grounded tools to minimize static electricity.

Precaution for Soldering:
1. Follow specified soldering temperature and time.
2. Protect the LCD surface during soldering.
3. Limit detachment of panels to prevent damage.

Operational Precautions:
1. Adjust voltage for optimal viewing angle.
2. Avoid exceeding voltage limits to prolong life.
3. Be cautious of condensation and ensure stable voltage before operation.

Storage:
1. Store in sealed polyethylene bags in dark places.
2. Avoid extreme temperatures and contact with other objects.

Safety:
1. Dispose of damaged LCDs properly.
2. Wash off any leaked liquid crystal material thoroughly.

Limited Warranty:
1. DISPLAYTECH offers a one-year warranty for functionally defective modules.
2. Cosmetic defects must be reported within 90 days.
3. Warranty does not cover violations of handling precautions.

Return LCM under Warranty:
1. Warranty is void if handling precautions are violated.
2. Modules must be returned with a description of defects.

Revision Record:
Version 1.0 - Initial revision (7 March 2008)
Version 1.1 - Correction in power supply ratings (10 June 2008)

Catalog excerpts

Website: www.displaytech.com.hk Product: 64128L Series LCD Module (128 x 64 DOTS)

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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.

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 P 3 of 21

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 P 4 of 21 Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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 is...

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 P 5 of 21 NOTE 3: CURRENT CONSUMPTION (I LCD) Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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 LCD MODULE 64128L SERIES Version : 1.1 P 11 of 21 ♦ ABSOLUTE MAXIMUM RATING TESTING POINT CIRCUIT DIAGRAM 1. AVERAGE LUMINOUS INTENSITY IS THE AVERAGE VALUE OF THE NINE INDICATED POINTS AS SHOWN. 2. MEASUREMENT INSTRUMENT: BM-7, APERTURE: ' 10mm.

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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 64128L SERIES Version : 1.1 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 64128L SERIES Version : 1.1 P 14 of 21

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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

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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 64128L SERIES Version : 1.1 P 17 of 21

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 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 this...

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◆ Storage Precautions 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. ◆ Others 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 module is subject to a low temperature....

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 P 20 of 21 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...

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Displaytech Ltd LCD MODULE 64128L SERIES Version : 1.1 P 21 of 21 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 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 more...

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64128L-Series

64128L-Series

Catalog excerpts

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