Ndai hkrat sum ai lam ni hta hkrang masa ni nga ai, law malawng gaw minit 30 (sh) dai hta n-ga, dai hta n-ga, jep chyoi lu ai. Ndai laika buk gaw manghkang hparan ai lam gaw teng sha gara hku galaw ai hpe madung tawn nna gram lajang da ai: screen ntsa kaw mu lu ai kaw nna hpang nna, byin pru wa ai lam de bai nhtang wa nna galaw ai. Nang gram lajang ai rai timhpaga lam a matu LCD madun ai screen niretail hta, shawa kiosk ni hta panel ni hpe run galaw ai, shing nrai, rawt jat galu kaba wa ai shaloi, embedded hardware hpe debug galaw ai, ana jep chyoi ai ladat gaw maren sha rai nga ai.
Lawan ai kumla ni hpe yu ai
Ndai table hpe shawng nnan na filter hku lang u. Lam law law a majaw, kumla langai hpe shabyin ya lu ai majaw, hpang jahtum na mahtai n re ai sha, hpang jahtum na lam hku nna mu mada u.
| Ana kumla | Laksan byin mai ai lam | Shawng nnan galaw ra ai |
|---|---|---|
| Screen tsep kawp nsin sin ai, hpang nhtoi n nga ai | Power hkrat ai (sh) fuse hkrat ai | Module pin ni hta shang wa ai wan n-gun hpe shadawn yu u |
| Screen hpaw tim grai nhtoi htoi ai | Backlight hkrat sum ai (sh) hkrat sum ai LED array | Hpang nhtoi circuit hpe tinang hkrai chyam yu u |
| N-gun n rawng ai sumla hpe wan n-ga hte sha mu lu ai | Backlight hkrat sum ai - panel shi nan bungli galaw nga ai | LED strips hte mawdaw gau ai circuit hpe jep yu u |
| Htoi tu ai (sh) htoi tu ai display | Ribbon sumri n-gun n rawng ai (sh) n grin ai wan n-gun | Connector yawng hpe bai tawn da u; Jaw ai ripple hpe jep yu u |
| Screen ting hta dingyang (sh) dingyang line ni | Substrate hkrat mat ai (sh) mawdaw gau ai IC mara mat ai | Myi man hte jep joi ai lam; mawdaw gau ai board hpe galai kau ai |
| Scrambled (sh) n lawm ai laika si ni | Protocol n htap htuk ai (sh) firmware n kaja ai | Datasheet hte matut mahkai ai lam hpe jep yu u |
| Hpa n lawm ai screen hpraw | Shawng nnan galaw ai hta hkrat sum ai (sh) signal sum mat ai | Protocol hpe yu yu ga; Reset aten hpe kam u |
| N htum n wai ai nat sumla (sh) wan nat-in | Asak kaba sai panel ntsa na static sumla grai galu ai | Power shingjawng ai lam; pixel- hpe gram lajang ai chyam dinglik hkrang hpe galaw u |
| Touch input hpe n ka bang ai | Hten za ai hkra ai cable (sh) hten za ai firmware | Ribbon n-gang hpe jep yu u; re-htoi hkra ai hpe hkang ai jak |
| Random reset (sh) n-gun shingjawng ai lam | Voltage rawt jat wa ai (sh) n hkum tsup ai ya n-gun atsam | Oscilloscope hte n-gun jaw ai lam hpe shadawn ai; Surge makawp maga lam hpe jat bang u |
LCD Module hkrat sum ai lam hpe teng sha hpa majaw byin shangun ai kun?
Hpang nhtoi hten za mat ai
Backlight gaw LCD module ni hta langai sha - hkrat sum ai lam law dik htum rai nga ai. LED arrays ni gaw shanhte a bungli galaw ai aten laman hta loi loi hte nhtoi htoi mat wa ai - galaw shapraw ai ni gawJEDEC semiconductor kam hpa mai ai chyam dinglik ai madang ni, hte rated asak hkrung lam ni gaw, jai lang ai-grade hte bungli galaw ai-grade panel ni a lapran hta grai shai hkat nga ai. Na a bungli galaw ai masa hta shi a rated service prat a matu na a module a datasheet hpe galoi mung yu u, generic industry jahpan hpe n re.
Hten za mat sai backlight nga ai display gaw, wan n-gun jep ai lam ni hpe naw lai nga ai. Panel gaw bungli galaw nga ai - shi gaw shingra tara nhtoi hta hti mai ai sumla hpe n lu shapraw ai. Screen gaw nhtoi htoi ai nta kata hta hkap la mai ai zawn rai tim, nhtoi htoi tu ai rung (sh) shinggan de n mu lu na daram rai mat yang, backlight hpe shawng chyam yu ra ai.
⚠️ Masha law malawng shut chye ai:nhtoi htoi ai hpe grau htum hkra shadut ai hku nna dimming backlight hpe gram lajang ai. Ndai gaw LED hpe lawan ladan n-gun shayawm ya nna, -hten za mat sai daw langai a ngam nga ai akyu rawng ai aten hpe kadun shangun ai. Shawng nnan kaw nna htuk manu ai nhtoi htoi ai headroom hte hardware hpe lata ai gaw manghkang hpe tsep kawp koi lu ai - hpa gaw garan ginhka ai hpe yu uhpaga yumga - madang LCD module nin-gun jaw ai -grade kaga ladat ni kaw na.
Connector hte Cable manghkang ni
Ribbon cable ni, zebra matut mahkai ai lam ni, solder joint ni gaw, n-gun rawng ai, nbung n-gun rawng ai, bai kahtap nna n-gun rawng ai npu hta hkrat sum mat chye ai. Dai hkrat sum ai lam gaw galoi mung n-gun n rawng ai: orientation nkau mi hta htoi tu ai, vibration npu hta display segment ni hkrat sum mat ai, shing nrai, screen langai mi gaw startup galaw ai shaloi bungli galaw ai raitim, bungli galaw ai temperature hta hkrat sum ai. Connector shagu hpe daw ni hpe n order shi yang bai gram lajang ai gaw, zero cost hte field complaints law law hpe hparan ya lu ai.
grup yin myit ru myit tsang lam
Katsi ai gaw liquid crystal hpe bai htang ai lam hpe shayawm ya ai; n-gun gaw polarizer a asak kaba wa ai hte n-gun yawm wa ai hpe lawan shangun ai; humidity gaw kata kaw na electrode ni hpe jahten kau ya nna, n nga mat ai display segment ni hpe shabyin ya nna, bat law law na ai hpang loi loi hte grau sawng wa ai. Galoi mung grau sawng ai-case masa ni hpe tsun dan u, shadawn shadang masa ni hpe n re. Ra kadawn ai makau grup yin ni hta jai lang na matu,grup yin masat masa ni hte bung ai LCD madun ai hparan ladat nifield hkrat sum ai hpang n re ai sha, deployment garai n galaw shi yang jep joi na matu manu dan ai.
⚠️ Masha law malawng shut chye ai:lab masa hta display langai hpe chyam yu nna, shinggan, katsi ai sutdek kata, shing nrai, hka lim ai shara - makau kaw dai zawn sha galaw na ngu sawn la ai, module a rated IP class hte temperature range gaw deployment makau grup yin hte teng sha bung ai hpe n jep yu ai sha.
Power jaw ai lam hte Driver a shut ai lam ni
Voltage n-gun ja wa ai majaw, kalang ta driver IC hpe hkra machyi shangun ai. Supply ripple - DC rail - ntsa na AC nsen gaw grau nna n mu lu ai, shinggyin la lu ai hkra machyi lam ni hpe byin shangun ai: random reset, sumla nsen, LED prat hpe kadun shangun ai. Na a module a datasheet hpe yu nna, shi a n-gun grau law ai hpe yu u; panel amyu shagu hta jai lang mai ai universal threshold n nga ai.
Firmware n kaja ai lam ni hte protocol n htap htuk ai lam ni gaw hardware hkrat sum ai lam hpe kam hpa mai ai hku kasi la ai laksan daw langai mi re. Board galai ai (sh) software update galaw ngut ai hpang screen hpraw (sh) scrambled output pru wa ai gaw grai law hkra configuration shut ai lam re, panel hkrat sum ai lam n re. Ndai garan ginhka ai lam gaw ahkyak ai shaloi .LCD hte LED bar screen hkrang ni hpe shingdaw yu ai- hpaji masa amyu myu hta protocol arawn alai hte mara masat kumla amyu myu nga ai.
Lahkam kru- Ana jep chyoi ai ladat
Ndai ni hpe ladat hte maren galaw u. Mara hpe mu ai hte rau jahkring kau u - n ra ai swaps ni aten hpe jahten kau nna variable nnan ni hpe shalawm ai.
Lahkam 1 - Power-n n hpaw shi yang, myi man hte yu yu ai.Panel a hpang kaw n-gun n rawng ai, hka lim ai, PCB ntsa wan hkru ai masa ni, shara htawt sit ai (sh) shinggrup mat ai ribbon cable ni hpe tam yu u. Hkum hkrang hkra machyi ai hpe mu yang, n-gun hkum lang. Short connection gaw, shawng na mara hta grau manu dan ai cascading hkra machyi lam byin shangun chye ai.
Lahkam 2 - Shang ai voltage hpe jep yu u.Module a n-gun shang ai pin ni hta multimeter lang u. TFT panel ni a matu 3.3V, 5V, shing nrai 12V - ngu ai n-gun hpe maram yu u. 5% jan hti ai gaw shinggan spec warrants sawk sagawn ra ai. Kalang lang shut ai lam ni a matu, datasheet a ahkang jaw da ai masat da ai lam hte maren, supply ripple hpe jep yu na matu oscilloscope hpe jat bang u.
Lahkam 3 - Hpang nhtoi hpe garan tawn da u.Nhtoi htoi ai nta langai mi hta, panel ntsa kaw angle langai mi hku nna flashlight hpe htoi tu shangun u. N-gun n rawng ai sumla hpe shapraw lu yang, panel gaw bungli galaw nga ai rai nna, backlight sha hkrat sum mat sai. Ndai chyam dinglik ai lam langai sha gaw, ana jep chyoi ai hpun a daw mi hpe second 10 - npu hta yeng seng kau ya nna, 10 hta mung maren sha bungli galaw ya ai.bar- hkrang LCD madun ain-gun rawng ai panel ni hta zawn.
Lahkam 4 - Cable hte board ni hpe ladat hte galai shai u.Chye da ai-kaja ai chyam dinglik ladat hpe load galaw u. Ribbon cable hpe jep chyoi da ai bungli galaw ai unit hte galai kau u. Fault gaw cable a hpang hkan nang ai rai yang, cable gaw manghkang re. Board hte rau sha nga yang, board gaw hpang na re. Manu n law dik ai, hkap la mai ai daw hpe shawng galai kau u.
Step 5 - Matut mahkai ai lam hpe jep yu u.Board galai ai hpang screen hpraw (sh) garbled pru wa ai gaw galoi mung configuration shut ai lam rai nga ai. Baud rate (UART), SPI ladat (CPOL/CPHA), shing nrai I2C address hpe datasheet hte shingdaw nna jep yu u. Ndai lahkam gaw 2019 ning hta n bung ai mara ni hpe rim la ai.kiosk madun dan ai grup yindai shara hta module ni hpe field hta galai shai ai, law malawng gaw n hkum tsup ai laika buk ni kaw na.
Step 6 - Bench ntsa kaw na field masa ni hpe bai galaw u.Lab kaw bungli galaw ai raitim, deployment hta hkrat sum mat ai display gaw galoi mung ngu na daram thermal (sh) vibration root byin ai lam nga ai.℃kaw n-gun n rawng ai connector gaw 55℃kaw tsep kawp hpaw mai ai. Bench chyam dinglik ai shaloi hkang lu ai katsi ai hpe jai lang u - katsi ai lam langai ngai a ntsa kaw pru wa ai mara gaw katsi ai lam jat wa ai hpe mechanism hku nna hkrak sha chye ginhka lu ai.
Hkrang shapraw na (sh) galai na kun? Dawdan ai lam a hkrang masa
Repair gaw lachyum pru ai shaloi .dai mara gaw galai shai mai ai arung arai langai mi hta sha nga ai - cable, backlight array, firmware update - module gaw galai shai na matu sourcing galaw ai shaloi grai hkrat sum ai aten (sh) bai hkrang shapraw ai lam ni lawm ai system langai a daw langai rai nna, gram lajang ai manu gaw unit nnan langai hta grau n law ai hpe asan sha mu lu ai.
Galai shai ai lam gaw grau nna lachyum pru ai shaloi .ana kumla law law kalang ta pru wa ai. Dim backlight, connector wear, hte sumla ghosting ni rau dan dawng wa ai gaw, kam mai ai hku nna, magam bungli prat ngut sai hpe madun ai, gram lajang mai ai mara langai mi n re. Ya aten na module langai mi gaw grau kaja ai masat da ai lam ni hpe jaw ai shaloi mung lachyum pru ai - grau htoi tu ai, grau dam lada ai bungli galaw ai nbung katsi ai, grau kaja ai ingress makawp maga ai lam - rai nna, dai gaw htawm hpang na gram lajang ai lam hpe shayawm ya lu na re.
Lam lahkawng hta na langai ngai hpe n kam shi yang, ndai ga san manga hpe galaw yu u:
- Ndai gaw unit a shawng nnan hkrat sum ai lam rai kun, shing nrai, shawng de hkrat sum yu sai kun?
- Mara gaw, galai shai mai ai daw langai sha hta sha nga ai kun?
- Yawng gram lajang ai manu - a daw ni, bungli galaw masha ni, hte n bungli galaw ai aten - gaw galai shai ai manu hta asan sha npu kaw nga ai kun?
- Dai gram lajang da ai unit gaw, system a ngam nga ai service ra ai lam hku nna, teng sha nga lu na kun?
- Ya aten hta galai shai ai gaw ndai application a matu lachyum rawng ai grau kaja ai masat masa ni hpe jaw ya ai kun?
Mahtai masum (sh) dai hta jan ai gaw galai shai na hpe ra sharawng ai rai yang, dai gaw madung hku nna grau dan dawng ai lam re. Hkum tsup hkra tam yu uarung arai amyu myushing nraihpaji ninghkring langai hte tsun shaga usourcing hte seng nna. Retail hte signage masa ni a matu,dut mari masat kumla ni a matu laksan LCD hkrang shapraw ai lamlaw law lang, direct like-for-like swap hta grau kaja ai- aten galu sut masa hpe jaw ya lu ai.
Makawp maga ai lam
- grup yin hpe hkang zing ai lam:Module a masat da ai nbung katsi ai hte nbung katsi ai ginra kata kaw deploy galaw nna, masing jahkrat na matu worst-case masa ni hpe jai lang u. Hka lum ai -hkum tsup ai shara ni hta, IP ratings ni hpe jep chyoi da ai pat da ai shingdu shingwang ni gaw ra kadawn ai lam rai nna, sadi maja ai lam n re.
- N-gun hpe hparan ai lam:Hardware surge makawp maga ai tara shang arung arai ni hpe lang u. Backlight ni hpe n-gun grau ja ai aten hta matut manoi n-gun dat ai hpe koi nga u - htoi tu ai hpe htuk manu hkra hkang ai gaw LED hpe shayawm ya nna, jai lang mai ai lam hpe n mu lu hkra hkra machyi shangun ai.
- Jahpan masat da ai jep joi ai lam ni:Shata shagu - gaw connector dung shara hpe jep yu nna, hka lim ai hpe tam yu u. Quarter shagu - gaw ana jep chyoi ai ladat hpe galaw nna, load npu hta supply voltage hpe jep yu u. Shaning shagu - gaw, n-gun jaw ai lam hpe jep yu nna, nhtoi htoi ai n-gun (delamination) (sh) polarizer aging byin ai lam hpe jep yu ai.
A matutinang - daw jau ai sharadeployments ni hpe matut manoi galaw nga ai -traffic law ai makau grup yin ni hta, shata mali hta kalang jep joi ai lam gaw -manu dan dik htum ai langai sha gram lajang ai magam bungli re.Supermarket grup yin hta lang ai LCD screen ni hpe gang je kau aihka lim ai hte san seng ai tsi ni hpe laksan hku nna hkrum katut ra ai, dai hpe masat da ai gram lajang ai aten ladaw ni hta tup hkrak n lu hparan ya lu ai.
Galoi mung san ai ga san ni
Ngai na LCD kaw hpraw ai screen - nga ai panel gaw hkrat mat sai kun?
N ra ai. Screen hpraw gaw hkum hkrang hkra machyi ai hta grau nna matut mahkai lam (sh) initialization hkrat sum ai lam byin chye ai. Module a datasheet hte shingdaw nna, protocol gram lajang ai lam - baud rate, SPI masa, shing nrai I2C address - hpe jep yu u. Ndai lam gaw grau nna firmware update (sh) board swap galaw ngut ai hpang, settings ni hpe hkrak n htawt sit ai rai na re.
Backlight (sh) LCD panel n kaja ai hpe gara hku chye lu na kun?
Nhtoi htoi ai nta kata kaw angle langai hku nna screen ntsa kaw flashlight hpe htoi tu shangun u. N-gun n rawng ai sumla hpe mu lu yang, panel gaw output hpe hkrak shapraw nga ai rai nna, backlight sha hkrat sum mat ai. Flashlight npu kaw sumla langai mi mung n nga ai ngu ai gaw, mara gaw panel, driver board, shing nrai, shan lahkawng a lapran na signal lam hta nga ai ngu ai lachyum re.
Module hpe n galai ai sha, htoi tu ai display hpe gram lajang mai na kun?
Law malawng hta gaw, rai na re. Flickering byin ai lam gaw, n-gun n rawng ai ribbon cable, marginal solder joint (sh) grai law ai supply ripple a majaw byin pru wa ai. Connector ni hpe bai tawn da nna, load npu hta supply voltage hpe ngang grin ai hku jep yu ai gaw, gara component hpe mung galai shai ra ai aten garai n du shi yang, flickering complaint law malawng hpe hparan ya lu ai.
Moisture hte hkrum katut ai display hpe power hpaw na matu shim ai kun?
No. Power n bang shi yang, module hpe n-gun n law ai-hkum hkrang hta tup hkrak hkyet mat hkra ahkang jaw u. Wet display hpe power jaw ai shaloi, electrode ni n-gun yawm mat nna, panel hpe prat tup hkra machyi shangun ai short circuit ni byin chye ai.
Hpa majaw nye a display gaw bench ntsa kaw bungli galaw tim, hkai sun kaw hkrat sum ai kun?
Intermittent field-sha hkrat sum ai lam ni gaw, bungli galaw ai nbung laru hta thermal jat wa ai, vibration-a majaw connector n-gun jat wa ai, shing nrai, hpaw hpang ai shaloi condensation byin wa ai majaw galoi mung byin chye ai. Bench chyam dinglik ai shaloi, tengman ai deployment grup yin - nbung katsi ai, katsi ai, katsi ai - hpe bai galaw u. Ra kadawn ai masa ni hpe grau nna hkan sa lu ai hardware hpe lata la na matu lam matsun lu na matu,ndai gaw -magam bungli kaja ai LCD madun na lata la mai ai lam ni hpe sumtang yu aiahkyak dik htum ai specification shai hkat ai lam ni hpe shinggrup da ai.
Daw dan lam
LCD module hkrat sum ai lam ni hpe hpa hpe tam ra ai hpe chye ngut ai hpang hti mai ai. Nsin sin ai panel, htoi tu ai screen, garbled output - langai hpra gaw byin mai ai lam ni a hparan mai ai jahpan de map galaw ya ai, gram lajang da ai jep chyoi ai ladat gaw, random hku nna daw ni hpe galai shai ai hta, teng man ai mara hpe grau lawan ai hku mu lu ai. Dai zawn re ai ladat gaw, gram lajang ai lam ngut sai aten hpe asan sha tsun dan nna, galai shai ai lam gaw teng man ai mahtai re.
Kade nna ai aten hta hkrat sum ai lam langai gaw, na a agenda hta hardware nnan hpe bang da ai rai yang, sawk sagawn yu u .dai ni na aten na hpaga lam hte seng ai LCD screen ni hpe moi na hkrang shapraw ai ladat ni hte gara hku shingdaw ai, shing nraisan ai lam hpe tang madun una a laksan application ra ai lam ni hpe bawngban na matu.
