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website: www.displaytech.com.hk lcd m odule p roduct specification product: DT043BTFT & DT043BTFT - ts 4.3 '' tft display module ( 480 rgbx 272 dots) 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. 3 november 2011 .
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 1 1. revision record version changes date 1.0 initial revision 25 july 2011 1.1 number of leds on page 5 was corrected. 27 july 2011 1.2 correct the resolution figure in introduction section. 3 august 2011 1.3 changed the temperature range of ts version 3 november 2011
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 2 table of content 1. revision record ................................ ................................ .......... 1 2. introduction ................................ ................................ .......................... 3 3. general s pecifications ................................ ................................ .......... 3 4. mechanical drawing ................................ ................................ ............. 4 5. interface description ................................ ................................ ............ 6 6. absolute maximum ratings ................................ ................................ 7 7. electrical characteristics ................................ ................................ ..... 7 8. display controller /power supply t iming ................................ ......... 7 9. backlight specification ................................ ................................ ......... 8 10. optical characteristics ................................ ................................ ......... 8 11. safety precaution ................................ ................................ ................ 11
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 3 2. introduction DT043BTFT and DT043BTFT - ts is a display module that contains a tft display with a 272 * 480 rgb resolution. the driver used for this project is the himax hx8257 - a or compatible and can display 16.7m colors. the driver is mounted on the glass and the interconnection via fpc including components to drive the display module. 3. general s pecifications item specification unit lcd mode transmissive --- resolution 480 (rgb) line 272 li ne diagonal size 4.3 inch overall size 105.50 mm 67.20 m m active area 95.04 m m 53.86 m m optimum viewing direction 6 o clock --- driver ic hx8257 - a --- interface type 24 - bit digital (rgb) --- colours 16.7m --- operation temperature range - 20~70 c storage temperature range - 30~80 c remarks: (1) recommended mating connector: hirose fh19sc - 45s - 0.5sh , fh12s - 45s - 0.5sh ; or molex 0512964593 , 0512964594 ; or equivalent (2) color tune may be changed slightly by temperature and driving voltage. (3) rohs compliant . component life cycle 1) storage life : min. 1 year 2) operation life ( *1 ): min. 4 3 x 10 3 h (2 4 h r/d ay x 7days / week x 52weeks/year x 5years) (not include backlight) 3) storage and operation life times are defined for a temperature of +25c notes: *1. operation life ends when one of the listed faults occurs: ? the on/off response - times reach 1.5 times of the max. value specified for a new display ? the contrast is reduced to 0.5 of the original contrast value ? loss of function ? the number of cosmetic defects exceeds the maximum defined
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 4 4. mechanical drawing DT043BTFT
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 5 DT043BTFT - ts
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 6 5. interface description pin no symbol i/o description 1~2 gnd --- power ground 0v 3 v dd --- power supply 3.3v 4 / reset i res et pin. 5~12 r0 ~ r7 i red data 13~20 g0 ~ g7 i gree n data 21~28 b0 ~ b7 i blue data 29 p clk i clock for input data. 30 disp i display on/off mode control. disp=l: standby mode. disp=h: normal display mode. 31 hsync i horizontal sync input with negative polarity. 32 vsync i vertical sync input with ne gative polarity. 33 d e i data input enable. 34 ud i shift direction selection signal (ud=h: up -- >down, ud=l: down -- >up) 35 lr i scan direction selection signal (lr=h: left -- >right, lr=l: right -- >left) 36 /cs i chip select pin of serial interface. leave it open when not used. 37 scl i serial clock input pin. leave it open when not used. 38 sdi i serial input signal. leave it open when not used. 39 sdo o serial output signal. leave it open when not used. 40 nc / xr - -- no connection (DT043BTFT) / xr o f touch screen (DT043BTFT - ts) 41 nc / yd - -- no connection (DT043BTFT) / yd of touch screen (DT043BTFT - ts) 42 nc / xl --- no connection (DT043BTFT) / xl of touch screen (DT043BTFT - ts) 43 nc / yu - -- no connection (DT043BTFT) / yu of touch screen (dt043b tft - ts) 44 k --- backlight cathode . 45 a --- back light anode.
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 7 6. absolute maximum ratings (ta=25 ? ) item symbol min. max. unit power s upply voltage v cc - 0.3 + 4.0 v logic signal input/output voltage v dd - 0.3 + 4.0 v operating temperature t op - 2 0 + 7 0 ? storage temperature t st - 3 0 + 8 0 ? note: when temperature is below 0 ? , the response time of liquid crystal (lc) will be slower and the color o f panel will be darker. if module driving condition exceeds the absolute maximum ratings , permanent da maged may be resulted. if module is driven within the absolute maximum ratings but exceeded the dc characteristics, mal - function may be resulted. vdd /vcc > vs s 7. electrical characteristics dc characteristics (vss=0v, ta=25 ? ) item symbol condition min. ty p. max. unit power supply v cc / v dd 3.135 3.3 3.465 v input voltage ? v ih --- 0. 7 vdd --- v dd v input voltage l v il --- vss --- 0. 3 v dd v output voltage h v oh ioh= - 100ua 0.9 v dd --- v dd v output voltage l v ol ioh=100ua vss --- 0.1 vdd v 8. d i splay controller /power supply timing see display controller specification: himax hx8257 - a
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 8 9. backlight specification (vcc=3.3v, vss=0v, ta=25 ? ) item symbol condition min typ max unit note supply voltage vf if=40ma 15.0 16.0 17.0 v 2 forward current if --- --- 40 ma 1, 2 u niformity bp if=40ma 70 --- --- % color coordination x 0.275 --- 0.317 --- y 0.275 --- 0.317 --- led circuit diagram: constant current if=2x20ma=40ma; vf=16.0v(typ) note: 1) the led s driver mode needs to be constant cur rent mode. 2) permanent damage to the device may occur if maximum values are exceede d. functional operation should be restricted to the conditions described under normal operating conditions. 10. optical characteristics (vcc=3.3v, vss=0v, ta=25 ? ) item symbol co ndition min typ max unit note brightness bp =0 =0 220 --- --- c d/m 2 1 u niformity bp 70 --- --- % 1, 2 viewing angle 1 ( =90 or 270) cr 10 - 70 ~ 50 deg 3 2 ( =0 or 180) - 70 ~ 70 contrast ratio cr =0 =0 400 450 --- --- 4 response time tr --- 20 30 m s 5 tf cie (x,y) c hroma ti city white x =0 =0 0.273 0.323 0.373 --- 1, 6 y 0.298 0.348 0.398 red x 0.536 0.586 0.636 y 0.307 0.357 0.407 green x 0.294 0.344 0.394 y 0.427 0.577 0.527 blue x 0.104 0.154 0.204 y 0.052 0.102 0.152 ntsc ratio s --- 50 --- %
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 9 note 1: the data are measured after leds are turned on for 5 minutes. lcm displays full white. the brightness is the average value of 9 measured spots. measurement equipment pr - 705 ( 8mm) measuring condition: - measuring surrou ndings: dark room. - measuring temperature: ta=25c. - adjust operating voltage to get optimum contrast at the center of the display. measured value at the center point of lcd panel after more than 5 minutes while backlight turning on. note 2: the luminance uniformity is calculated by using following formula. bp = bp (min.) / bp (max.) 100 (%) bp (max.) = maximum brightness in 9 measured spots bp (min.) = minimum brightness in 9 measured spots. measurement equipment pr - 705 ( 8mm) note 3: the definition of viewing angle: refer to the graph below marked by and w/6 w/3 w/3 l/6 l/3 l/3
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 10 note 4: the definition of contrast ratio (test lcm using pr - 705): contrast ratio (cr) = luminance when lcd is at white state luminance when lcd is at blac k state (contrast ratio is measured in optimum common electrode voltage) note 5: definition of response time. (test lcd using dms501): the output signals of photo detector are measured when the input signals are changed from black to ?hite (fallin g time) and from white to black (rising time), respectively. the response time is defined as the time interval between the 10% and 90% of amplitudes. refer to figure as below. the definition of response time note 6: definition of color of cie coord inate and ntsc ratio. color gamut: s = area of rgb triangle x 100% area of ntsc triangle
displaytech ltd lcd module DT043BTFT / DT043BTFT - ts version: 1. 3 11 11. s afety p recaution handling precautions: this device is susceptible to electro - static discharge (esd) damage. observe anti - st atic precautions. power supply 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 vcc and gnd, h owever briefly. use a clean power source free from transients. power up conditions are occasionally jolting and may exceed the maximum ratings of the modules. the vcc power of the module should also supply the power to all devices that may access the di splay. don t allow the data bus to be driven when the logic supply to the module is turned off. operating precautions: do not plug or unplug the module when the system is powered up. minimize the cable length between the module and host mpu. operate the module within the limits of the modules temperature specifications. mechanical/environmental precautions: 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. mount the module so that it is free from torque and mechanical stress. surface of the lcd panel should not be touched or scratched. the display front surface is an easily scratched, plastic polarizer. avoid contact and clean on ly 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 hu midity. 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 wa ter and soap
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