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no. ld ?21y53a date nov. 18.2009 revised technical literature for tft - lcd module model no. LQ121X3LGXX the technical literature is subject to change without notice. so, please contact sharp or its representative before designing your product based on this literature. pc display & lcd monitor business planning & marketing project team , division mobile lcd group sharp corporation
records of revision LQ121X3LGXX spec no. date revised summary note no. page ld-21y53a nov. 18.2009 1st issue
ld-21y53a-1 these technical literature sheets are the propriet ary product of sharp corporation(?sharp) and include materials protected under copyright of sharp. do not reproduce or cause any third party to reproduce them in any form or by any means, electronic or mechanical, for any purpose, in whole or in part, without the express written permission of sharp. in case of using the device for applications such as control and safety equipment for transportation(aircraft, trains, automobiles, etc. ), rescue and security equipment and various safety related equipment which require higher reliability and safety, take into consideration th at appropriate measures such as fail-safe functions and redundant system design should be taken. do not use the device for equipment that requires an extreme level of reliability, such as aerospace applications, telecommunication equipment(trunk lines), nuclear power control equipment and medical or other equipment for life support. sharp assumes no responsibility for any damage resulting from the use of the device, which does not comply with the instructions, and the precautions specified in these technical literature sheets. contact and consult with a sharp sales representative for any questions about this device.
ld-21y53a-2 table of contents 1. application ................................................................................................................ .............................. 3 2. overview ................................................................................................................... .............................. 3 3. mechanical specifications .................................................................................................. .................... 3 4. input terminals ............................................................................................................ ........................... 4 4-1. tft-lcd pa nel driving .................................................................................................... ....................... 4 4-2 lvds interface block diagram ............................................................................................. .................. 5 4-3. backligh t driv ing ........................................................................................................ ............................. 6 5. absolute maximum ratings ................................................................................................... ................ 6 6. electrical characteristics ................................................................................................. ....................... 7 6-1.tft-lcd pa nel driv ing ..................................................................................................... ....................... 7 6-2. backligh t driv ing ........................................................................................................ ............................. 9 6-3. lvds input specification ................................................................................................. ..................... 10 6-3-1. ac characteristics ..................................................................................................... ..................... 10 6-3-2.lvds data ............................................................................................................... ........................ 11 7. timing characteristics of input signals .................................................................................... ............ 11 7-1. timing characteristics ................................................................................................... ......................... 11 7-2. input data signals and di splay position on the screen .................................................................... ........ 12 8. input signals, basic display colors and gray scale of each color ..................................................... 13 9. optical characteristics .................................................................................................... ...................... 14 10. display quality ........................................................................................................... .......................... 15 11. handling precautions ...................................................................................................... ...................... 16 12. packing form .............................................................................................................. ........................... 17 13. rohs regulations .......................................................................................................... ....................... 17 fig. 1 packing form ........................................................................................................... .............................. 18 fig. 2 outline dimensions ..................................................................................................... .......................... 19
ld-21y53a-3 1. application this technical literature applies to a color tft-lcd module, LQ121X3LGXX. 2. overview this module is a color active matrix lcd m odule incorporating amorphous silicon tft (thin film transistor). it is composed of a color tft-lcd panel, driver ics, control circuit and power supply circuit and a backlight unit. graphics and texts can be displayed on a 10243768 dots panel with 262,144 colors by using lvds (l ow v oltage d ifferential s ignaling) to interface and supplying +3.3v dc supply voltage for tft-lcd panel driving and supply voltage for backlight. in this tft-lcd panel , low reflection / color filters of excellent color performan ce and led backlights of high brightness are incorporated to realize brighter and clearer pictures, making this model optimum for use in multi-media applications. optimum viewing direction is 6 o'clock. led backlight-driving dc/dc converter is not built in this module. 3. mechanical specifications parameter specifications unit display size 30.7(12.1") diagonal cm active area 245.8 (h) 184.3(v) mm pixel format 1024(h) 768(v) pixel (1 pixel = r+g+b dots) aspect ratio 4 : 3 pixel pitch 0.240(h) 0.240 (v) mm pixel configuration r,g,b vertical stripe display mode normally white surface treatment antiglare and hard-coating 2h parameter min. typ. max. unit unit outline dimensions [note 1] width (258.5) (259) (259.5) mm height (204.5) (205) (205.5) mm depth (7.5) (8.0) mm mass (530) g [note 1] excluding led backlight fpc. outline dimensions is shown in fig.2
ld-21y53a-4 4. input terminals 4-1. tft-lcd panel driving cn1 (lvds signals and +3.3v dc power supply) pin no. symbol function remark 1 vcc +3.3v power supply 2 vcc +3.3v power supply 3 gnd 4 gnd 5 rxin0- receiv er signal of lvds ch0 (-) [note 1] 6 rxin0+ receiver signal of lvds ch0 (+) [note 1] 7 gnd 8 rxin1- receiv er signal of lvds ch1 (-) [note 1] 9 rxin1+ receiver signal of lvds ch1 (+) [note 1] 10 gnd 11 rxin2- receiv er signal of lvds ch2 (-) [note 1] 12 rxin2+ receiver signal of lvds ch2 (+) [note 1] 13 gnd 14 ck in- receiver signal of lvds clk (-) [note 1] 15 ck in+ receiver signal of lvds clk (+) [note 1] 16 gnd 17 nc [note 1] 18 nc [note 1] 19 gnd 20 gnd [note 1] relation between rxini(i=0,1,2) and actual data is shown in following section (4-2)(7-2). [note 2] the shielding case is connected with signal gnd. [note 3] please use nc by open or gnd. nc termin al is not connected with the internal circuit. using connector : df19l-20p-1h (hirose) or equivalent. corresponding connector : df19g-20s-1c(hirose) (sharp is not responsible to its product quality, if the user applies a connector not corresponding to the above model.)
ld-21y53a-5 4-2 lvds interface block diagram using receiver : single lvds interface contained in a control ic corresponding transmitter : thc63lvdm63a (thine) or equivalent txin12 txin17 txin 0 txin 5 txin 6 txin11 r0 r5 b0 b5 enab g0 g5 rxin0 + ( 5 ) rxin0 - ( 6 ) txin18 txin19 txin20 6 6 6 controller ttl parallel to lvds pll lvds to ttl parallel pll rxin1 + (8) rxin1 - (9) rxin2 + (11) rxin2 - ( 12 ) ck in + (14) ck in - ( 15 ) 6 6 6 r0 r5 b0 b5 enab g0 g5 internal circuits cl k cl k txclk in (computer side) (tft-lcd side) [ note 1 ] [ note 1 ] [note 1] do not use at high-impedance txin 18 - 19. 100 100 100 100 s y mbol of cn1 ( pin no. )
ld-21y53a-6 4-3. backlight driving led-back light fpc pin no. symbol function remark 1 led_c1 led-b/l cathode1 2 led_c2 led-b/l cathode2 3 led_c3 led-b/l cathode3 4 led_c4 led-b/l cathode4 5 led_c5 led-b/l cathode5 6 nc [note 1] 7 led_a led-b/l anode 8 led_a led-b/l anode 9 led_a led-b/l anode 10 led_a led-b/l anode [note1]please use nc by open. nc terminal is not connected with the internal circuit. corresponding connector : 52746-1071(molex) (sharp is not responsible to its product quality, if the user applies a connector not corresponding to the above model.) 5. absolute maximum ratings parameter symbol condition ratings unit remark min. max. input voltage v i ta=25 -0.3 vcc+0.3 v [note 1] +3.3v supply voltage vcc ta=25 0 +4.0 v led forward current i led_f ta=25 0 280 ma [note2] led reverse current i led_r ta=25 85 ma [note2] storage temperature tstg -40 +85 [note 3] operating temperature (ambient) topa -20 +60 [note 1] lvds signals [note 2] value for one led string [note 3] humidity 95%rh max. at ta Q +45 . maximum wet-bulb temperature at +44 or less at ta>+45 . no condensation.
ld-21y53a-7 6. electrical characteristics 6-1.tft-lcd panel driving ta + 25 parameter symbol min. typ. max. unit remark supply voltage vcc +3.0 +3.3 +3.6 v [note 2] current dissipation icc (380) (600) ma [note 3] permissive input ripple voltage v rp 100 mv p-p vcc = +3.3v input voltage range v i 0 2.4 v lvds signals differential input high v th +100 mv v cm = +1.2v threshold voltage low v tl ?100 mv [note 1] input current (high) i oh 10 a v i = +2.4v vcc = +3.6v input current (low) i ol 10 a v i = 0v vcc = 3.6v terminal resistor r t 100 differential input [note 1] v cm : common mode voltage of lvds driver. [note 2] on-off conditions for supply voltage symbol min. max. unit remark t1 0 10 ms t2 0 1 s t3 0 1 s t4 0 400 ms t5 200 ms t6 180 ms *1 t7 5 ms *1 *1 : as for the power sequence for backlight, it is recommended to apply above mentioned input timing. if the backlight is lit on and off at a timing other than shown above, displaying image may get disturbed. this is due to variation of output signal from timing generator when lvds signal is changed from on to off or vice versa, but has no harm to the module itself. [note] do not keep the interface signal high-imp edance or unusual signal when power is on. t1 t2 t6 0.9vcc 0.9vcc vcc valid backlight signal (lvds interface) 0.1vcc 0.1vcc 0.1vcc t3 t5 off off backlight on (lamp) t7 t4
ld-21y53a-8 vcc-dip conditions 1) 2.5 v Q vcc 3.0 v td Q 10 ms under above condition, the display image should return to an appropriate figure after vcc voltage recovers. 2) vcc 2.5 v vcc-dip conditions should also follow the on-off conditions fo r supply voltage [note 3] typical current situ ation : 16-gray-bar pattern. vcc=+3.3v maximum current situation : vcc=+3.0v vcc td 9? 9 : 9t 9 : rgb gs0 rgb gs4 rgb gs8 rgb gs56 rgb gs60 ....
ld-21y53a-9 6-2. backlight driving the backlight system is edge-lighting type with 40 white-led(white light emitting diode). the characteristics of white-led are shown in the fo llowing table. (ta=25 o c) parameter symbol min. typ. max. unit remark led forward voltage v led_f (24.0) (27.2) v [note1] led forward voltage variation S v led_f 3.2 v [note1] [note2] led forward current range i led_f (70) (70) ma value for one string number of circuit strings 5 [note 3] led power consumption w led (8.4) (9.5) w [note1] [note 4] led life time l led (50000) hour [note 5] [note1] i led_f = (70ma) [note2] variation of v led_f between each string in one lcd module. [note 3] the led backlight is composed by 5 strings from which 8 led is connected with the series. the figure below shows the circuit chart of each string. in each circuit, there is a ceramic capacitor for the electrostatic protection. [note 4] calculated value for reference ( i led_f v led_f ) [note 5] led life time is defined as the time when brightness become s 50 % of the original value. under the condition of ta = 25 and i led_f = (70ma), and continuous lighting. led_a led_c5 led_c4 led_c3 led_c2 led_c1 led 40
ld-21y53a-10 6-3. lvds input specification 6-3-1. ac characteristics vcc=+3.0v +3.6v ta -2 0 +60 parameter symbol min typ. max. unit input data position 0 (trcip=15.38ns) t ripi -0.25 0.0 +0.25 ns input data position 1 (trcip=15.38ns) t rip0 t rcip /7-0.25 t rcip /7 t rcip /7+0.25 ns input data position 2 (trcip=15.38ns) t rip6 2 t rcip /7-0.25 2 t rcip /7 2 t rcip /7+0.25 ns input data position 3 (trcip=15.38ns) t rip5 3 t rcip /7-0.25 3 t rcip /7 3 t rcip /7+0.25 ns input data position 4 (trcip=15.38ns) t rip4 4 t rcip /7-0.25 4 t rcip /7 4 t rcip /7+0.25 ns input data position 5 (trcip=15.38ns) t rip3 5 t rcip /7-0.25 5 t rcip /7 5 t rcip /7+0.25 ns input data position 6 (trcip=15.38ns) t rip2 6 t rcip /7-0.25 6 t rcip /7 6 t rcip /7+0.25 ns phase lock loop set t rpll 10 ms input clock period t rcip 14.9 15.4 20 ns lvds input timing lvds phase lock loop set i=0,1,2 t rcip ck in+/- v diff =0 v diff =0 t rip1 t rip0 t rip6 t rip5 t rip4 t rip3 t rip2 rxini6 rxini5 rxini4 rxini3 rxini2 rxini1 rxini0 rxini6 rxini5 rxini4 rxini3 rxini2 rxini1 rxini+/- note vdiff= ( rxini+ ) - ( rxini- ) ( ck in+ ) - ( ck in- ) 3.0v t rpll vcc ck in+/- pllclk 2.0v v diff =0v
ld-21y53a-11 6-3-2.lvds data 7. timing characteristics of input signals 7-1. timing characteristics vcc=+3.0v +3.6v ta -20 +60 parameter symbol min. typ. max. unit remark clock frequency 1/tc 50 65 67 mhz [note 1] data enable signal horizontal period th 1260 1344 1408 clock 19.38 20.68 s horizontal period (high) thd 1024 1024 1024 clock vertical period tv 803 806 900 line 15.56 16.67 ms vertical period (high) tvd 768 768 768 line [note 1] in case of using the long vertical period, the deterioration of display quality, flicker, etc, may occur. ck in+/- r4? r3? r2? r1? r0? g0 r5 r4 r3 r2 r1 r0 g0? rxin0+/- g5? g4? g3? g2? g1? b1 b0 g5 g4 g3 g2 g1 b1? rxin1+/- x? b5? b4? b3? b2? enab x x b5 b4 b3 b2 enab? rxin2+/- previous cycle current cycle
ld-21y53a-12 7-2. input data signals and display position on the screen 1 ? 1 1 ? 2 1?3 2 ? 1 2 ? 2 3 ? 1 768 ? 1 1 ? 1024 r g b 768 ? 1024 r1 g1 b1 r2 g2 b2 (1,1) (1,2) display position of input data(v ? h) 1024 1 2 1024 thd tvd tv tc 12 768 enab data (r,g,b) enab 767 th
ld-21y53a-13 8. input signals, basic di splay colors and gray scale of each color colors & data signal gray scale gray scale r0 r1 r2 r3 r4 r5 g0 g1 g2 g3 g4 g5 b0 b1 b2 b3 b4 b5 black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 blue 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 green 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 cyan 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 red 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 magenta 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1 yellow 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 white 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 black gs0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 gs1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 darker gs2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 brighter gs61 1 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 gs62 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 red gs63 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 black gs0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 gs1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 darker gs2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 brighter gs61 0 0 0 0 0 0 1 0 1 1 1 1 0 0 0 0 0 0 gs62 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 green gs63 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 black gs0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 gs1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 darker gs2 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 brighter gs61 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 gs62 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 blue gs63 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 : low level voltage, 1 : high level voltage each basic color can be displayed in 64 gray scales from 6 bit data signals. a ccording to the combination of total 18 bit data signals, the 262,144-color display can be achieved on the screen. basic color gray scale of red gray scale of green gray scale of blue
ld-21y53a-14 9. optical characteristics ta=+25 , vcc=+3.3v parameter symbol condition min. typ. max. unit remark viewing angle range horizontal 21, 22 cr>10 (60) (70) deg. [note 1-1,2,3] vertical 11 (40) (50) deg. 12 (50) (60) deg. contrast ratio crn =0 (600) [note 1-2,3,5] cro optimum viewing angle (600) (1000) response time r+ d =0 (30) (40) ms [note 1-2,4,5] chromaticity of white x 0.263 0.313 0.363 [note 1-2,5] y 0.279 0.329 0.379 color gamut (ntsc ratio) (40) % [note 1-2,5] luminance of white y li (1200) cd/m 2 [note 1-2,6] (i led_f =70ma) white uniformity w (1.20) (1.45) [note 1-2,7] the measurement shall be executed 30 minu tes after lighting at rating. condition : (i led_f =70ma) the optical characteristics shall be measured in a dark room or equivalent. [note 1-1] measuring viewing angle range [note1-2] measuring viewing angle range lcd panel ez contrast 160rh ( eldim ) center of the screen ( sr-3 ( topcon
ld-21y53a-15 [note 2] definitions of viewing angle range: [note 3] definition of contrast ratio: the contrast ratio is defined as the following. contrast ratio (cr) [note 4] definition of response time: the response time is defined as the following figure and shall be measured by switching the input signal for "black" and "white" . [note 5] this shall be measur ed at center of the screen. [note 6] luminance of center.(c) [note 7] definition of white uniformity: white uniformity is defined as the following with five measurements (a e). 10. display quality the display quality of the color tft-lcd module shall be in compliance with the incoming inspection standard. luminance (brightness) with all pixels white luminance (brightness) with all pixels black maximum luminance of five points (brightness) minimum luminance of five points (brightness) w 768 pixels 512 256 192 384 pixels 576
ld-21y53a-16 11. handling precautions a) be sure to turn off the power supply when inserting or disconnecting the cable. b) be sure to design the cabinet so that the module can be installed without any extra stress such as warp or twist. c) since the front polarizer is easily damaged, pay attention not to scratch it. blow away dust on the polarizer with antistatic n 2 blow. it is undesirable to wipe off because a polarizer is sensitive. it is recommended to peel off softly using the adhesive tape when soil or finger oil is stuck to the polarizer. when unavoidable, wipe off carefully with a cloth for wiping lenses. d) wipe off water drop immediately. long contact with water may cause discoloration or spots. e) when the panel surface is soiled, wipe it with absorbent cotton or other soft cloth. f) since the panel is made of glass, it may break or crack if dropped or bumped on hard surface. handle with care. g) since cmos lsi is used in this module, take care of static electricity and injure the human earth when handling. observe all other precautionary requirements in handling components. h) since there is a circuit board in the module back, stress is not added at the time of a design assembly. please make it like. if stress is added, there is a possibility that circuit parts may be damaged. i) protection film is attached to the module surface to prevent it from being scratched . peel the film off slowly , just before the us e, with strict attention to electrostatic charges. blow off 'dust' on the polarizer by using an ionized nitrogen. j) do not expose the lcd module to a direct sunlight, for a long period of time to protect the module from the ultra violet ray. k) connect gnd of mounting holes to stabilize against emi and external noise. l) when handling lcd modules and assembling them into cabinets, please avoid that long-terms storage in the environment of oxidization or deoxidization gas and the use of such materials as reagent, solvent, adhesive, resin, etc. which generate these gasses, may cause corrosion and discoloration of the modules. m) liquid crystal contained in the panel may leak if the lcd is broken. rinse it as soon as possible if it gets inside your eye or mouth by mistake. n) notice : never dismantle the module , because it will cause failure. please don't remove the fixed tape, insulating tape etc that was pasted on the original module. (except for protection film of the panel and the crepe tape (yellow tape) of fixing led fpc temporarily.) o) be careful when using it for long time with fixed pattern display as it may cause afterimage. (please use a screen saver etc. , in order to avoid an afterimage.) p) adjusting volume has been set optimally before shipment, so do not change any adjusted value. if adjusted value is changed, the specification may not be satisfied. .
ld-21y53a-17 12. packing form this packing form and the specification are tentative. this packing form and specification might be changed because they are designing now. piling number of cartons tbd package quantity in one carton 10 pcs carton size (474(w) 335(d) 296(h)mm) total mass of one carton filled with full modules (7500g) packing form fig.1 13. rohs regulations this lcd module is compliant with rohs directive.
ld-21y53a-18 this packing form and the specification are tentative. this packing form and the specification might be changed because they are designing now. fig. 1 packing form
ld-21y53a-19 fig. 2 outline dimensions

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