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| LCX028BLT 4.6cm (1.8-inch) black-and-white lcd panel description the LCX028BLT is a 4.6cm diagonal active matrix tft-lcd panel addressed by polycrystalline silicon super thin film transistors with a built-in peripheral driving circuit. use of three LCX028BLT panels provides a full-color representation. the striped arrangement suitable for data projectors is capable of displaying fine text and vertical lines. the adoption of an advanced on-chip black matrix realizes a high luminance screen. and cross talk free circuit and ghost free circuit contribute to high picture quality. this panel has a polysilicon tft high-speed scanner and built-in function to display images up/down and/or right/left inverse. the built-in 5v interface circuit leads to lower voltage of timing and control signals. the panel contains an active area variable circuit which supports 4:3 and 16:9 data signals by changing the active area according to the type of input signal. features number of active dots: 1,310,720 (1.8-inch, 4.6cm in diagonal) 4:3 and 16:9 aspect-ratio switching function 4:3 (1280 (h) 960 (v)) 16:9 (1280 (h) 720 (v)) high optical transmittance: 20% (typ.) built-in cross talk free circuit and ghost free circuit high contrast ratio with normally white mode: 300 (typ.) built-in h and v drivers (built-in input level conversion circuit, 5v driving possible) up/down and/or right/left inverse display function antidust glass package microlens used element structure dots: 1280 (h) 1024 (v) = 1,310,720 built-in peripheral driver using polycrystalline silicon super thin film transistors applications liquid crystal data projectors liquid crystal multimedia projectors liquid crystal rear-projector tvs, etc. ?1 e00637a15 sony reserves the right to change products and specifications without prior notice. this information does not convey any licens e by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustr ating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. ? the company's name and product's name in this data sheet is a trademark or a registered trademark of each company.
?2 LCX028BLT 18 com vsig6 vsig5 vsig4 vsig3 vsig2 vsig1 vss vv dd hv dd enb dwn pcg vck vst rgt blk hck2 hck1 hst v ss g psig 17 20 19 22 23 16 2 24 vb1 vb2 25 29 26 28 15 30 27 comr 9 12 11 10 8 7 4 3 5 13 6 14 vsig7 vsig8 vsig9 vsig10 vsig11 vsig12 1 21 coml 32 h shift register (bidirectional scanning) up/down and/or right/left inversion control circuit v shift register (bidirectional scanning) precharge control circuit com pad v shift register (bidirectional scanning) black frame control circuit black frame control circuit input signal level shifter circuit 31 block diagram 3 LCX028BLT absolute maximum ratings (v ss = 0v) h driver supply voltage hv dd 1.0 to +20 v v driver supply voltage vv dd 1.0 to +20 v common pad voltage com, coml, comr 1.0 to +17 v h shift register input pin voltage hst, hck1, hck2, 1.0 to +17 v rgt v shift register input pin voltage vst, vck, pcg, 1.0 to +17 v blk, enb, dwn vb1, vb2 video signal input pin voltage sig1 to 12, psig 1.0 to +15 v operating temperature ? topr 10 to +70 c storage temperature tstg 30 to +85 c ? panel temperature inside the antidust glass operating conditions (v ss = 0v) supply voltage hv dd 15.5 0.5v vv dd 15.5 0.5v input pulse voltage (vp-p of all input pins except video signal and uniformity improvement signal input pins) 4 LCX028BLT pin description pin no. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 psig comr vsig1 vsig2 vsig3 vsig4 vsig5 vsig6 vsig7 vsig8 vsig9 vsig10 vsig11 vsig12 hv dd rgt hst hck1 hck2 v ss coml blk enb vck vst dwn vb1 vb2 pcg vv dd v ss g com symbol description uniformity improvement signal voltage for right cs (storage capacity) electrode line video signal 1 to panel video signal 2 to panel video signal 3 to panel video signal 4 to panel video signal 5 to panel video signal 6 to panel video signal 7 to panel video signal 8 to panel video signal 9 to panel video signal 10 to panel video signal 11 to panel video signal 12 to panel power supply for h driver drive direction pulse for h shift register (h: nomal, l: reverse) start pulse for h shift register drive clock pulse for h shift register drive 1 clock pulse for h shift register drive 2 gnd (h, v drivers) voltage for left cs (storage capacity) electrode line black frame display pulse enable pulse for gate selection clock pulse for v shift register drive start pulse for v shift register drive drive direction pulse for v shift register (h: nomal, l: reverse) display area switching 1 display area switching 2 improvement pulse for uniformity power supply for v driver gnd for v gate common voltage of panel 5 LCX028BLT input equivalent circuit to prevent static charges, protective diodes are provided for each pin except the power supplies. in addition, protective resistors are added to all pins except the video signal inputs. all pins are connected to v ss with a high resistor of 1m ? (typ.). the equivalent circuit of each input pin is shown below: (resistance value: typ.) input hv dd signal line 1m ? (1) vsig1 to vsig12, psig hv dd 250 ? 250 ? 250 ? 250 ? level conversion circuit (2-phase input) input 1m ? 1 ? level conversion circuit (2-phase input) (2) hck1,hck2 level conversion circuit (single-phase input) 2.5k ? 2.5k ? hv dd input 1m ? (3) rgt level conversion circuit (single-phase input) 250 ? 250 ? hv dd input 1m ? (4) hst are all vss 6 LCX028BLT level conversion circuit (single-phasa input) 250 ? 250 ? vv dd input 1m ? (5) pcg, vck level conversion circuit (single-phase input) 2.5k ? 2.5k ? vv dd input 1m ? (6) vst,blk,enb,vb1,vb2 2.5k ? 2.5k ? vv dd input 400k ? level conversion circuit (signal phase input) (7) dwn input lc 1m ? vv dd (8) com,coml,comr input 1m ? (9) hv dd , v ss g, vv dd are all vss 7 LCX028BLT input signals 1. input signal voltage conditions (v ss = 0v) item h shift register input voltage hst, hck1, hck2, rgt (low) (high) (low) (high) vhil vhih vvil vvih vvc vsig vcom vpsigb vpsigg 0.5 4.5 0.5 4.5 6.9 vvc 4.5 vvc 0.6 vvc 4.4 vvc 1.7 0.0 5.0 0.0 5.0 7.0 7.0 vvc 0.5 vvc 4.5 vvc 1.8 0.4 5.5 0.4 5.5 7.1 vvc + 4.5 vvc 0.4 vvc 4.6 vvc 1.9 v v v v v v v v v shift register input voltage vb1, vb2, blk, vst, vck, pcg, enb, dwn video signal center voltage video signal input range ? 1 common voltage of panel ? 2 uniformity improvement signal input voltage (psig) ? 3 symbol min. typ. max. unit ? 1 input video signal shall be symmetrical to vvc. ? 2 the typical value of the common pad voltage may lower its suitable voltage according to the set construction to use. in this case, use the voltage of which has maximum contrast as typical value. when the typical value is lowered, the maximum and minimum values may lower. ? 3 input a uniformity improvement signal psig in the same polarity with video signals vsig1 to vsig12 and which is symmetrical to vvc. psig wave form is 2 steps like below, in the upper chart, upper shows signal level of the 1st step, lower shows signal level of the 2nd step. also, the rising and falling of psig are synchronized with the rising of pcg pulse, and the rise time trpsig and fall time tfpsig are suppressed within 400ns (as shown in a diagram below). level conversion circuit the LCX028BLT has a built-in level conversion circuit in the clock input unit on the panel. the input signal level increases to hv dd or vv dd . the v cc of external ics are applicable to 5 0.5v. trpsig tfpsig vvc psig pcg 90% 10% prg ? 4 psigg psigb input waveform of uniformity improvement signal psig ? 4 prg shows the time of the 1st step of psig signal, and it is not input to the panel. 8 LCX028BLT 2. clock timing conditions (ta = 25 c) (sxga mode: fhckn = 4.5mhz, fvck = 32.0khz, fv = 60hz) ? 5 hckn means hck1 and hck2. ? 6 the minimum value of tdenb is 450ns. when h-blk has a long cycle and has some time to spare, take more time prior to other value. ? 7 blk is the timing during 4:3 and 16:9 aspect-ratio mode, which keeps "h" level in other modes. hst rise time hst fall time hst data set-up time hst data hold time hckn rise time ? 5 hckn fall time ? 5 hck1 fall to hck2 rise time hck1 rise to hck2 fall time vst rise time vst fall time vst data set-up time vst data hold time vck rise time vck fall time enb rise time enb fall time horizontal video period completed to enb fall time enb rise to horizontal video period started enb fall to pcg rise time enb pulse width pcg rise time pcg fall time pcg rise to vck rise/fall time pcg fall to horizontal video period start time pcg pulse width prg ? 4 rise to pcg rise time prg ? 4 fall to pcg fall time prg ? 4 pulse width blk rise time blk fall time blk rise to enb fall time blk fall to pcg rise time trhst tfhst tdhst thhst trhckn tfhckn to1hck to2hck trvst tfvst tdvst thvst trvck tfvck trenb tfenb tdenb tuenb topcg twenb trpcg tfpcg tovck tovideo twpcg topcgr topcgf twprg ? 4 trblk tfblk toenb topcg 35 35 15 15 2 2 450 ? 6 800 750 1800 100 200 1600 10 400 1100 2 1 45 45 0 0 6 6 700 1100 1000 0 270 1800 0 600 1200 1 0 30 30 55 55 30 30 15 15 100 100 10 10 100 100 100 100 30 30 100 10 100 100 0 1 ns s ns item symbol min. typ. max. unit hst hck vst vck enb pcg blk ? 5 prg ? 4 s 9 LCX028BLT ? 8 definitions: the right-pointing arrow ( ) means +. the left-pointing arrow ( ) means . the black dot at an arrow ( ) indicates the start of measurement. 10 LCX028BLT 11 LCX028BLT item symbol waveform conditions prg ? 4 fall to pcg fall time prg ? 4 topcgf prg ? 4 pulse width twprg ? 4 50% ? 8 prg ? 4 pcg topcgf 50% 50% twprg ? 4 topcgr 50% ? 8 blk 50% topcg 50% toenb 50% 50% pcg enb blk blk rise time trblk blk fall time tfblk blk rise to enb fall time toenb blk fall to pcg rise time topcg 90% 10% 10% 90% tfblk trblk ? 9 pcg input pin and prg ? 4 should be "h" level during the horizontal 1h period, where the above blk is low more than 10ns. ? 9 twpcg 50% 50% tovideo pcg ? 8 50% vck h. blanking period h. video period tovck pcg ? 9 pcg rise time trpcg pcg fall time tfpcg pcg rise to vck rise/fall time tovck pcg fall to horizontal video period start time pcg pulse width prg ? 4 rise to pcg rise time tovideo twpcg topcgr 90% 10% 10% 90% pcg trpcg tfpcg 12 LCX028BLT electrical characteristics (ta = 25 c, hv dd = 15.5v, vv dd = 15.5v) 1. horizontal drivers item input pin capacitance hckn hst input pin current hck1 hck2 hst rgt video signal input pin capacitance current consumption chckn chst csig ih hck1 = gnd hck2 = gnd hst = gnd rgt = gnd hckn: hck1, hck2 (4.5mhz) 1000 1000 500 150 35 25 500 500 190 40 200 17.0 40 30 250 25.0 pf pf a a a a pf ma symbol min. typ. max. unit condition 2. vertical drivers item input pin capacitance vck vst input pin current vck,pcg vst, enb, dwn, blk, hb, vb current consumption cvck cvst iv 500 150 15 15 150 35 4.0 20 20 6.0 pf pf a a ma symbol min. typ. max. unit condition 3. total power consumption of the panel 4. pin input resistance item pin v ss input resistance rpin 0.4 1 m ? symbol min. typ. max. unit item com pin capacitance (com, coml, comr total) com 25 30 nf symbol min. typ. max. unit item total power consumption of the panel pwr 330 480 mw symbol min. typ. max. unit vck = gnd, pcg = gnd vst, enb, dwn,blk, hb vb = gnd vck: (32.0khz) 5. uniformity improvement signal item input pin capacitance for uniformity improvement signal cpsigo 15 nf symbol min. typ. max. unit 18 6. com pin capacitance 13 LCX028BLT reflection preventive processing when a phase substrate which rotates the polarization axis is used to adjust to the polarization direction of a polarization screen or prism, use a phase substrate with reflection preventive processing on the surface. this prevents characteristic deterioration caused by luminous reflection. electro-optical characteristics (sxga mode) item contrast ratio 25 c 25 c 25 c 60 c 25 c 60 c 25 c 60 c 0 c 25 c 0 c 25 c 60 c 25 c 25 c cr t rv 90-25 gv 90-25 bv 90-25 rv 90-60 gv 90-60 bv 90-60 rv 50-25 gv 50-25 bv 50-25 rv 50-60 gv 50-60 bv 50-60 rv 10-25 gv 10-25 bv 10-25 rv 10-60 gv 10-60 bv 10-60 ton0 ton25 toff0 toff25 f yt60 ctk 1 2 3 4 5 6 7 % v ms db s % optical transmittance v-t characteristics v 90 v 50 on time off time v 10 response time flicker image retention time cross talk symbol measurement method min. typ. max. unit 200 18 0.9 1.0 1.2 0.9 1.0 1.1 1.3 1.4 1.5 1.2 1.3 1.4 1.7 1.8 1.9 1.7 1.8 1.8 300 20 1.3 1.4 1.6 1.3 1.4 1.5 1.7 1.8 1.9 1.6 1.7 1.8 2.1 2.2 2.3 2.1 2.2 2.2 24.0 9.0 99.0 27.0 82.0 0 1.6 1.7 1.9 1.6 1.7 1.8 2.0 2.1 2.2 1.9 2.0 2.1 2.4 2.5 2.6 2.4 2.5 2.5 80.0 40.0 200.0 70.0 40.0 5 14 LCX028BLT 15 LCX028BLT 2. optical transmittance optical transmittance (t) is given by the following formula (2). white luminance t = 100 [%] ... (2) luminance of light source "white luminance" means the maximum luminance on the screen at the input signal amplitude v ac = 0.5v on measurement system i . 3. v-t characteristics v-t characteristics, or the relationship between signal amplitude and the transmittance of the panels, are measured by system ii by inputting the same signal amplitude v ac to each input pin. v 90 , v 50 , and v 10 correspond to the voltages which define 90%, 50%, and 10% of transmittance respectively. 4. response time response time ton and toff are defined by formulas (5) and (6) respectively. ton = t1 ton ...(5) toff = t2 toff ...(6) t1: time which gives 10% transmittance of the panel. t2: time which gives 90% transmittance of the panel. the relationships between t1, t2, ton and toff are shown in the right figure. 90 50 10 v 90 v 50 v 10 v ac signal amplitude [v] transmittance [%] input signal voltage (waveform applied to the measured pixels) 4.5v 0.5v 7.0v 0v optical transmittance output waveform 100% 90% 10% 0% ton t1 ton toff t2 toff 16 LCX028BLT 5. flicker flicker (f) is given by formula (7). dc and ac (sxga: 30hz, rms) components of the panel output signal for gray raster ? mode are measured by a dc voltmeter and a spectrum analyzer in system ii . f [db] = 20log { ac component } ...(7) dc component 6. image retention time apply the monoscope signal to the lcd panel for 60 minutes and then change this signal to the gray scale of vsig = 7.0 v ac (v ac : 3 to 4v). judging by sight at the v ac that holds the maximum image retention, measure the time till the residual image becomes indistinct. ? monoscope signal conditions: vsig = 7.0 4.5 or 2.0 [v] (shown in the right figure) vcom = 6.6v 7. cross talk cross talk is determined by the luminance differences between adjacent areas represented by wi' and wi (i = 1 to 4) around a black window (vsig = 4.5 v/1v). cross talk value ctk = 100 [%] ? each input signal voltage for gray raster mode is given by vsig = 7.0 v 50 [v] where: v 50 is the signal amplitude which gives 50% of transmittance in v-t characteristics. black level white level vsig waveform 7.0v 0v 4.5v 2.0v 4.5v 2.0v w1 w1 ' w3 w3 ' w2 w2 ' w4 ' w4 wi' wi wi 17 LCX028BLT viewing angle characteristics (without microlens) 90 270 180 0 theta phi 70 50 100 150 200 250 aa aa 50 aa aa 20 aa aa 10 cr = 5 10 30 180 x 270 y 0 90 z 0 marking measurement method 18 LCX028BLT optical transmittance of lcd panel (typical value) 30 20 10 0 400 500 600 700 wavelength [nm] trans. [%] measurement method: measurement system ii 19 LCX028BLT 1. dot arrangement the dots are arranged in a stripe. the shaded area is used for the dark border around the display. 8 dots 1296 dots 8 dots 1032 dots 4 dots 1280 dots (effective 35.84mm) 1024 dots (effective 28.672mm) 4 dots active area photo-shielding gate sw gate sw gate sw gate sw 20 LCX028BLT 2. lcd panel operations [description of basic operations] a vertical driver, which consists of vertical shift registers, enable-gates and buffers, applies a selected pulse to every 1024 gate lines sequentially in a single horizontal scanning period. (sxga mode) a horizontal driver, which consists of horizontal shift registers, gates and cmos sample-and-hold circuits, applies selected pulses to every 1280 signal electrodes sequentially in a single horizontal scanning period. these pulses are used to supply the sampled video signal to the row signal lines. vertical and horizontal shift registers address one pixel, and then thin film transistors (tfts; two tfts) turn on to apply a video signal to the dot. the same procedures lead to the entire 1024 1280 dots to display a picture in a single vertical scanning period. the data and video signals shall be input with the 1h-inverted system. [description of operating mode] this lcd panel can change the active area by displaying a black frame to support various computer or video signals. the active area is switched by vb1, vb2 and blk. however, the center of the screen is not changed. the active area setting modes are shown below. hb vb blk screen aspect ratio hh h l h ? 1 ? 1 5:4 1280 1024 4:3 1280 960 16:9 1280 720 l l ? 1 input blk pulse (refer to drive waveform and vertical blanking period of black frame mode). 21 LCX028BLT (1) vertical direction display cycle (dwn = h, l) rgt mode right scan left scan h l dwn mode down scan up scan h l this lcd panel has the following functions to easily apply to various uses, as well as various broadcasting systems. right/left inverse mode up/down inverse mode these modes are controlled by two signals (rgt and dwn). the right/left and/or up/down setting modes are shown below. right/left and/or up/down mean the direction when the pin 1 marking is located at the right side with the pin block upside. to locate the active area in the center of the panel in each mode, polarity of the start pulse and clock phase for both the h and v systems must be varied. the phase relationship between the start pulse and the clock for each mode is shown below. vertical display cycle 1024h vd 12 vck 3 1021 1022 1023 vst 1024 4 (1.1) sxga 22 LCX028BLT (2) horizontal direction display cycle (2.1.1) sxga (rgt = h) 1234 horizontal display cycle hst hck1 105 106 107 108 hck2 hd (2.1.2) sxga (rgt = l) horizontal display cycle hst hck1 12 34 105106 107 108 hck2 hd (3) vertical blanking cycle of black frame mode (4:3 and 16:9 display mode) the input waveforms of pcg, prg ? 1 and psig should be changed as shown below when blk pulse is input. blk vck enb pcg prg ? 1 psig vertical blanking cycle ? 1 prg shows the period of psig black level, it is not input to the panel. 23 LCX028BLT 3. 12-dot simultaneous sampling the horizontal shift register samples signals vsig1 to vsig12 simultaneously. this requires phase matching between signals vsig1 to vsig12 to prevent the horizontal resolution from deteriorating. thus, phase matching between each signal is required using an external signal delaying circuit before applying the video signal to the lcd panel. the block diagram of the delaying procedure using the sample-and-hold method is as follows. the following phase relationship diagram indicates the phase setting for right scan (rgt = high level). for left scan (rgt = low level), the phase settings for signals vsig1 to vsig12 are exactly reversed. vsig1 s/h s/h s/h s/h s/h s/h s/h s/h s/h s/h s/h s/h ck6 vsig2 vsig3 vsig4 vsig5 vsig6 vsig7 vsig8 vsig9 vsig10 vsig11 vsig12 3 4 5 6 7 8 9 10 11 12 13 14 LCX028BLT s/h ck5 s/h ck4 s/h ck3 s/h ck2 s/h ck1 ck6 s/h ck5 s/h ck4 s/h ck3 s/h ck2 s/h ck1 vsig (odd) vsig (even) 24 LCX028BLT 25 LCX028BLT notes on handling (1) static charge prevention be sure to take the following protective measures. tft-lcd panels are easily damaged by static charges. a) use non-chargeable gloves, or simply use bare hands. b) use an earth-band when handling. c) do not touch any electrodes of a panel. d) wear non-chargeable clothes and conductive shoes. e) install conductive mats on the working floor and working table. f) keep panels away from any charged materials. g) use ionized air to discharge the panels. (2) protection from dust and dirt a) operate in a clean environment. b) when delivered, the panel surface (glass panel) is covered by a protective sheet. peel off the protective sheet carefully so as not to damage the glass panel. c) do not touch the glass panel surface. the surface is easily scratched. when cleaning, use a clean- room wiper with isopropyl alcohol. be careful not to leave a stain on the surface. d) use ionized air to blow dust off the glass panel. (3) light resistance orientation film and organic matter such as liquid crystal used inside of the lcd panel deteriorate by the light chemical reaction. as a result, its indication characteristic may irreversible change. the progress of its chemical reaction is influenced by short wavelength side's light (characteristics of uv cut filter) and temperature when quantitiy of light is constant. to control its progress, attach suitable uv cut filter between light source and lcd panel. (sharp characteristic's filter of > 425nm is recommended.) also, use suitable ir cut filter to lower the temperature of lcd panel and cool the panel carefully. (4) other handling precautions a) do not twist or bend the flexible pc board especially at the connecting region because the board is easily deformed. b) do not drop the panel. c) do not twist or bend the panel or panel frame. d) keep the panel away from heat sources. e) do not dampen the panel with water or other solvents. f) avoid storing or using the panel at a high temperature or high humidity, which may result in panel damages. g) minimum radius of bending curvature for a flexible substrate must be 1mm. h) torque required to tighten screws on a panel must be 0.294n m or less. i) do not pressure the portion other than mounting hole (cover). 26 LCX028BLT package outline unit: mm active area incident light incident light polarizing axis 1 4 3 5 2 7 9 8 6 description molding material outside frame reinforcing board reinforcing material f p c no 1 2 3 4 5 6 cover 1 7 8 cover 2 9 glass 1 glass 2 mass 25g the rotation angle of the active area relative to h and v is 1?. electrode (enlarged) 0.5 0.1 0.5 0.15 4.0 0.4 pin32 pin1 (28.7) 50.0 0.15 40.0 0.1 5.0 0.1 25.0 0.25 (35.8) 25.0 0.25 3.0 0.1 50.0 0.1 56.0 0.15 107.6 1.4 (51.6) 2.2 0.1 2.35 0.1 5.4 0.1 16.5 0.05 2.2 0.1 4-r3.0 thickness of the connector 0.3 0.05 3- 2.3 0.05 c0.8 output light polarizing axis p 0.5 0.02 31 = 15.5 0.03 0.35 0.03 sony corporation |
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