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website: www.displaytech.com.hk lcd m odule p roduct specification product: 128240D series lcd module (240 x 128 dots)
displaytech ltd lcd module 128240D series version : 1. 2 p 2 of 21 product specifications ? general specificati on ? absolute maximum ratings ? electrical characteristics ? electro - optical characteristics ? block diagram ? mechanical drawing ? backlight drawing ? backlight specification ? quality guarantee ? precautions for using lcd modules ? using lcd modules ? re vision record 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. 1 2 december 20 11 . displaytech ltd lcd module 128240D series version : 1. 2 p 3 of 21 ? general specification item contents display format 240 x 128 dots dot size (w x h) 0.325 x 0.325 view area (w x h) 92.0 mm x 53.0mm module size (w x h x t) 98.7 mm x67.7mm x 9.5 mm lcd type fstn polarizer m ode trans flective view angle 6 / 12 o clock backlight led backlight driver type external power backlight color white controller & lcd driver st7529 - g driving method 1/1 44 duty, 1/12 bias ? absolute maximun ratings (ta=25 c vss=0v) item symbol min . typ. max. unit power supply for logic vdd - vss - 0. 5 --- 4.0 v power supply for lcd v lcd - v ss - 0 .5 --- 20.0 v input voltage v in - 0. 5 --- vdd+0. 5 v supply voltage for led backlight v led --- 3.2 --- v normal operating temperature top 0 --- 5 0 c normal storage temperature tst - 1 0 --- 6 0 c wide operating temperature top - 20 --- 70 c wide storage temperature tst - 3 0 --- 80 c ? electrical characteristics (ta=25 c, vdd= 3.0 v +/ - 5% ) item symbol condition min. typ. max. unit power supply for lcm vdd - vs s --- 2.85 3.0 3. 15 volt input voltage vil l level vss --- 0. 3 vdd volt v ih h level 0. 7 vdd --- v dd volt lcd module driving voltage vlcd --- --- --- --- volt 25 c --- 1 5 .5 --- --- --- --- --- supply current for lcm idd vdd= 3.0 v --- 2.0 --- m a ie --- --- --- --- iled vled=3.2v --- 120 --- remark: 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 mo re current needed. displaytech ltd lcd module 128240D series version : 1. 2 p 4 of 21 ? electro - optical characteristics no item symbol measuring condition std.value unit remark c min typ max 1 recommended operating voltage vlcd ? = 0 = 0 25 14 14.5 15 v note1 note2 2 operating voltage vth ? = 0 = 0 0 --- -- - --- 25 --- 1.869 --- 40 --- --- --- vsat ? = 0 = 0 0 --- --- --- 25 --- 2.116 --- 40 --- --- --- 3 response time tr ? = 0 = 1 0 0 --- --- --- ms note4 25 --- 240 --- 4 0 --- --- --- tf ? = 0 = 1 0 0 -- - --- --- 25 --- 200 --- 4 0 --- --- --- 4 viewing angle (cr 2) ? =0 25 --- 40 --- deg note1 ? =180 25 --- 35 --- ? =90 25 --- 30 --- ? =270 25 --- 30 --- 5 current consumption ilcd hz=64 25 --- 16 --- ua note3 n ote 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. (n on - 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 opposition) detector 3h =90 6h =0 z ? =0 9h =270 12h =180 ? displaytech ltd lcd module 128240D series version : 1. 2 p 5 of 21 note 3 : current consumptio n (i lcd ) note 4 : response time (tr, tf) note 5 : contrast ratio (cr) 5.1 positive type: contrast ratio = brightness at vop (non - selected) brightness at vop (selected) 5.2 negative type: contrast ratio = brightness at vop (selected) brightness at vop (non - selected) note 6 : capacitance (c) conditions: voltage applied to all segments. conditions: 1.driving waveform: static waveform. 2.voltage applied to all segments displaytech ltd lcd module 128240D series version : 1. 2 p 6 of 21 ? block diagram displaytech ltd lcd module 128240D series version : 1. 2 p 7 of 21 ? mechancial drawing displaytech ltd lcd module 128240D series version : 1. 2 p 8 of 21 displaytech ltd lcd module 128240D series version : 1. 2 p 9 of 21 displaytech ltd lcd module 128240D series version : 1. 2 p 10 of 21 ? backlight drawing displaytech ltd lcd module 128240D series version : 1. 2 p 11 of 21 ? backlight specification mechanical specifications item nominal dimensions unit outli ne size (lxwxh) 98.70 x 67.70 x 9.50 mm viewing area (lxw) 92.00 x 53.00 mm contact pin pitch/length nil mm no.of led smt 6 --- electrical/optical characteristics (t a =25 c, i f = 120 ma typ.) mode parameter unit color white --- chromaticity coordin ate x= 0.25~0.35 y= 0.25~0.35 --- average luminous intensity (iv) min: 100 cd/ m 2 forward voltage (vf) 3.2 typ v absolute maximum rating item value unit forward current 18 0 ma if reverse voltage 5v vr power dissipation 576 mw pd operating temperatur e - 20 c to 70 c top storage temperature - 30 c to 80 c tstg testing point s circuit diagram remark: 1. average luminous intensity is the average value of the nine in dicated points as s hown . 2. measurement instrument: bm - 7, aperture: ? 10mm . displaytech ltd lcd module 128240D series version : 1. 2 p 12 of 21 ? quality guarantee pur po se: it is to define the inspection standard of lcd modules product standar d 1) inspection and test function test appearance inspection packing specifiction 2) i nspection condition 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 . 3) aql inspection level sampling method : mil - std - 105d sampling plan : single major defect : 0.65% (major) minor defect : 2.5% (minor) general level : ii/normal display area definition: lamp lcm operator viewing boundary view area displaytech ltd lcd module 128240D series version : 1. 2 p 13 of 21 inspection standard 1 ) function al test standard i tem i n spection standard descri p tion s tandard defect type 1 lcd has no display reject maj 2 lcm d isplay do not change reject maj 3 display wrong pattern r eject maj 4 display segment open r eject maj 5 display dim segment r eject maj 6 wrong lcd view ing direction r eject maj 7 dim display see sample maj 8 lcd color variation see samp le maj 9 pattern parallelism acceptable range l |