Lokhu kwehluleka kunamaphethini, futhi okuningi kungaxilonga emaminithini angu-30 noma ngaphansi. Lo mhlahlandlela uhlelwe ngendlela yokuthi ukuxazulula inkinga kusebenza kanjani ngempela: kusukela kulokho ongakubona esikrinini, bese usebenza uhlehle emuva kumbangela. Ukuthi uyalondolozaizikrini zokubonisa ze-LCD zezentengisoekuthengiseni, sebenzisa amaphaneli kumakhiyoski omphakathi, noma susa iphutha lezingxenyekazi zekhompuyutha ezishumekiwe phakathi nokuthuthukiswa, inqubo yokuxilonga iyafana.
Quick Symptom Reference
Sebenzisa leli thebula njengesihlungi sakho sokuqala. Izimbangela eziningi zingaveza uphawu olufanayo, ngakho-ke luphathe njengesiqondiso sokuqala, hhayi impendulo yokugcina.
| Uphawu | Okungenzeka Kakhulu | Isenzo sokuqala |
|---|---|---|
| Isikrini esimnyama ngokuphelele, akukho ukukhanya kwangemuva | Ukuhluleka kwamandla noma i-fuse eshaywayo | Linganisa i-voltage yokufaka kumaphini wemojuli |
| Isikrini sivuliwe kodwa sifiphele kakhulu | Ukwehliswa kokukhanya kwangemuva noma uhlu lwe-LED oluhlulekayo | Hlola i-backlight circuit ngokuzimela |
| Isithombe esifiphele sibonakala ngethoshi kuphela | Ukuhluleka kokukhanya kwangemuva - iphaneli ngokwayo iyasebenza | Hlola imigqa ye-LED kanye nesekhethi yomshayeli |
| Isibonisi esicwayizayo noma esikhanyayo | Intambo yeribhoni exegayo noma i-voltage yokuhlinzeka engazinzile | Sula kabusha zonke izixhumi; hlola ukunikezwa kwe-ripple |
| Imigqa eqondile noma evundlile esikrinini sonke | I-substrate ephukile noma iphutha le-IC yomshayeli | Ukuhlola okubonakalayo; shintsha ibhodi lomshayeli |
| Izinhlamvu ezicashile noma ezingekho | Ukungafani kwephrothokholi noma iphutha le-firmware | Qinisekisa izilungiselelo zokuxhumana usebenzisa idatha |
| Isikrini esimhlophe esingenakho okuqukethwe | Ukwehluleka ukuqalisa noma ukulahleka kwesignali | Hlola ukulungiselelwa kwephrothokholi; qinisekisa ukusetha kabusha isikhathi |
| Isithombe esiyisipoki esiqhubekayo noma ukushiswa-phakathi | Isithombe esimile kuphaneli yokuguga side kakhulu | Umjikelezo wamandla; sebenzisa i-pixel-iphethini yokuhlola yokuvuselela |
| Okokufaka kokuthinta akubhalisi | Ikhebuli yokuthinta eyonakele noma i-firmware eyonakele | Hlola ikhebula iribhoni; kabusha-isilawuli sokuthinta i-flash |
| Ukusetha kabusha okungahleliwe noma ukuhamba ngebhayisikili ngamandla | I-voltage spike noma umthamo wamanje onganele | Kala ukunikezwa nge-oscilloscope; engeza ukuvikelwa kokuhlinzwa |
Yini Empeleni Edala Ukwehluleka Kwemojula ye-LCD?
Ukwehliswa kwe-Backlight
I-backlight iwukwehluleka okuvame kakhulu-kwengxenye eyodwa kumamojula e-LCD. Amalungu afanayo e-LED aba mnyama kancane kancane ngaphezu kwempilo yawo yokusebenza - abakhiqizi bafanelekela imikhiqizo ngokumelene nayoAmazinga okuhlola ukuthembeka kwe-semiconductor ye-JEDEC, kanye nesikhathi sokuphila esilinganiselwe sihluka kakhulu phakathi kwamaphaneli{{0}ebanga kanye-nebanga lezimboni. Ngaso sonke isikhathi bhekisela kumininingwane yedatha yemojuli ethile yempilo yayo yesevisi elinganiselwe ngaphansi kwezimo zakho zokusebenza, hhayi isibalo semboni ejwayelekile.
Isibonisi esinesibani sangemuva esonakele sisadlula amasheke kagesi. Iphaneli iyasebenza - ayikwazi nje ukukhiqiza isithombe esifundekayo ekukhanyeni okujwayelekile okuzungezile. Uma isikrini sibukeka samukelekile egumbini elimnyama kodwa sicishe singabonakali ngaphansi kokukhanya kwehhovisi okukhanyayo noma ngaphandle, ukukhanya kwangemuva kuyinto yokuqala okufanele ihlolwe.
⚠️ Iphutha elivamile:kunxephezela ukukhanya kwangemuva okufiphele ngokucindezela ukukhanya kufike kubukhulu. Lokhu kusheshisa ukuguga kwe-LED futhi kufinyeze impilo esele ewusizo yengxenye{1}eyehlisa isithunzi kakade. Ukukhetha izingxenyekazi zekhompuyutha ezinokukhanya okufanele kusukela ekuqaleni kugwema inkinga ngokuphelele - bona ukuthi yini ehlukanisayoamamojula e-LCD-ebanga lezentengisokusuka kwezinye{0}ezihlukile zebanga lomthengi.
Izinkinga zesixhumi nekhebula
Izintambo zamaribhoni, izixhumi ze-zebra, namajoyinti e-solder kuncipha ngaphansi kokudlidliza, ukuhamba ngebhayisikili okushisayo, nokuguquguquka okuphindaphindiwe. Imodi yokwehluleka icishe ihlale isikhashana: icwayiza ezindaweni ezithile, yehlise amasegimenti esibonisi ngaphansi kokudlidliza, noma isikrini esisebenza ekuqaleni kodwa esihlulekayo kuzinga lokushisa lokusebenza. Ukubuyisela kabusha zonke izixhumi ngaphambi koku-oda izingxenye kuxazulula ingxenye ebalulekile yezikhalazo zenkambu ngezindleko eziyiziro.
Ukucindezeleka Kwemvelo
Ukubanda kubambezela ukusabela kwekristalu eliwuketshezi; ukushisa kusheshisa ukuguga kwe-polarizer kanye ne-adhesive delamination; umswakama ugqwalisa ama-electrode kusukela ngaphakathi, okhiqiza amasegimenti esibonisi ashodayo aba nzima kancane kancane emavikini. Hlala njalo ucacise izimo ezimbi kakhulu-, hhayi ezimaphakathi. Ngezicelo ezindaweni ezidinga kakhulu,izixazululo zokubonisa ze-LCD ezihlanganisiwe ezinezilinganiso zemvelo ezifanayokufanele zihlolwe ngaphambi kokuthunyelwa, hhayi ngemva kokwehluleka kwenkambu.
⚠️ Iphutha elivamile:ukuhlola isibonisi ezimweni zelebhu futhi ucabange ukuthi kuzokwenza okufanayo ngaphandle, endaweni yokugcina impahla ebandayo, noma eduze nomthombo womswakama - ngaphandle kokuqinisekisa ukuthi isigaba se-IP esilinganiselwe semojuli kanye nebanga lokushisa empeleni kufana nendawo yokusebenzisa.
Izinkinga Zokuhlinzekwa Kwamandla kanye Namaphutha Omshayeli
Ama-voltage spikes adala ukulimala kwe-IC yomshayeli ngokushesha. Hambisa i-ripple - Umsindo we-AC kumzila we-DC - ubangela umonakalo ocashile, onqwabelene: ukusetha kabusha okungahleliwe, umsindo wesithombe, nempilo ye-LED efinyeziwe. Bheka imininingwane yedatha yemojula yakho ukuze uthole ubuningi bevoltheji yayo evumelekile ye-ripple; awukho umkhawulo osebenza kuzo zonke izinhlobo zamaphaneli.
Iziphazamisi ze-Firmware nokungafani kwephrothokholi kuyisigaba esihlukile esilingisa ukwehluleka kwehadiwe ngendlela ekholisayo. Isikrini esimhlophe noma okukhiphayo okuhlahliwe ngemva kokushintshwa kwebhodi noma isibuyekezo sesofthiwe ngokuvamile kuba iphutha lokumisa, hhayi iphaneli ephukile. Lo mehluko ubalulekile laphoukuqhathanisa i-LCD namafomethi wesikrini sebha ye-LED- ubuchwepheshe obuhlukahlukene bunokuziphatha okuhlukile kwephrothokholi namasignesha anephutha.
Izinqubo-eziyisithupha zokuxilonga
Sebenza ngalezi ngokulandelana. Yima ngokushesha uma ukhomba iphutha - ukushintsha okungadingekile kokumosha isikhathi futhi wethule okuguquguqukayo okusha.
Isinyathelo 1 - Sokuhlola okubonakalayo ngaphambi kokuthi amandla{1}}avule.Bheka imifantu, ukujiya ngemuva kwephaneli, amamaki ashisayo ku-PCB, kanye nezintambo zeribhoni ezisusiwe noma ezikhiyiwe. Uma uthola ukulimala ngokomzimba, ungasebenzisi amandla. Uxhumano olufushane lungabangela umonakalo obiza kakhulu kunephutha langempela.
Isinyathelo 2 - Qinisekisa i-voltage yokufaka.Sebenzisa i-multimeter kumaphini okufaka amandla emojuli. Ama-voltage ajwayelekile alinganiselwe amaphaneli e-TFT athi 3.3V, 5V, noma 12V - hlola idatha yakho. Ukufundwa okungaphezu kuka-5% ngaphandle kwe-spec kudinga uphenyo. Ukuze uthole amaphutha ngezikhathi ezithile, engeza i-oscilloscope ukuze uhlole i-ripple yokuhlinzeka ngokuqhathanisa nemininingwane evunyelwe yedatha yedatha.
Isinyathelo 3 - Hlukanisa isibani sangemuva.Egunjini elimnyama, khanyisa ithoshi endaweni yephaneli nge-engeli. Uma ungenza isithombe esifiphele, iphaneli iyasebenza futhi i-backlight kuphela ehlulekile. Lokhu kuhlola okukodwa kuqeda ingxenye yesihlahla sokuxilonga ngaphansi kwamasekhondi angu-10 - futhi kusebenza kahle ngokulinganayoibha-ifomethi ye-LCD yokubonisanjengakumaphaneli angama-rectangular ajwayelekile.
Isinyathelo 4 - Shintshanisa amakhebuli namabhodi ngendlela.Layisha{0}}iphethini yokuhlola eyaziwayo. Shintshanisa ikhebuli yeribhoni ngeyunithi yokusebenza eqinisekisiwe. Uma iphutha lilandela ikhebula, ikhebula liyinkinga. Uma ihlala nebhodi, ibhodi lilandela. Shintshanisa ingxenye engabizi kakhulu, efinyeleleka kakhulu kuqala.
Isinyathelo 5 - Hlola iphrothokholi yokuxhumana.Isikrini esimhlophe noma okukhiphayo okubolile ngemva kokushintsha ibhodi cishe kuhlale kuyiphutha lokulungisa. Qinisekisa isilinganiso se-baud (UART), imodi ye-SPI (CPOL/CPHA), noma ikheli le-I2C ngokumelene nedatha yedatha. Lesi sinyathelo sibamba ingxenye engalingani yamaphutha kuwoizindawo zokubonisa ikhiyoskilapho amamojula ashintshwa khona endaweni, ngokuvamile avela kumadokhumenti angaphelele.
Isinyathelo 6 - Phinda futhi izimo zenkambu ebhentshini.Isibonisi esisebenza elebhu kodwa esihlulekayo ekusetshenzisweni cishe ngaso sonke isikhathi sinembangela eshisayo noma yokudlidliza. Isixhumi esimaphethelweni ku-22℃singase sivuleke ngokuphelele ku-55 degree. Faka ukushisa okulawulwayo phakathi nokuhlola ibhentshi - iphutha elivela ngaphezu kwezinga lokushisa elithile likhomba ukunwetshwa kokushisa njengomshini ngokuqondile.
Lungisa noma Faka esikhundleni? Uhlaka Lwesinqumo
Ukulungisa kunengqondo umaiphutha lenziwa lasendaweni entweni eyodwa eshintshwayo - ikhebula, i-backlight array, isibuyekezo se-firmware - imojuli iyingxenye yesistimu lapho ukuthola okushintshile kuhilela ukwehla okuphawulekayo noma ukuklama kabusha, futhi izindleko zokulungisa zingaphansi kweyunithi entsha ngokusobala.
Ukushintshwa kwenza umqondo owengeziwe umaizimpawu eziningi zivela kanyekanye. Ukukhanya kwangemuva okufiphele, ukuguga kwesixhumi, nesipoki sesithombe esivela ndawonye kuyinkomba ethembekile yokuphela kwempilo yesevisi, hhayi iphutha elilodwa elingalungiseka. Ukushintsha futhi kunengqondo uma imojuli yamanje inikeza izicaciso ezingcono - ukukhanya okuphezulu, izinga lokushisa elibanzi lokusebenza, ukuvikela okungcono kokungena - okunganciphisa umthwalo wokulungisa wesikhathi esizayo.
Ngaphambi kokuthi uzibophezele kunoma iyiphi indlela, phendula le mibuzo emihlanu:
- Ingabe leli yunithi ukwehluleka kokuqala, noma liye lehluleka ngaphambilini?
- Ingabe iphutha lilinganiselwe engxenyeni eyodwa, eshintshwayo?
- Ingabe isamba sokulungisa sibiza - izingxenye, abasebenzi, nesikhathi sokuphumula - sihlala ngokucacile ngaphansi kwezindleko zokumiselela?
- Ingabe iyunithi elungisiwe izohlala ngokweqiniso ngemfuneko yesevisi esele yesistimu?
- Ingabe ukumiselela kwamanje kunikeza izicaciso ezingcono ngokunenjongo zalolu hlelo lokusebenza?
Uma izimpendulo ezintathu noma ngaphezulu zikhetha ukushintshwa, ngokuvamile leyo yindlela ecacile. Phequlula ngokugcweleuhla lomkhiqizonomakhuluma nochwepheshemayelana nokutholakala. Okuqukethwe kwezitolo nezimpawu,ukucushwa kwe-LCD ngokwezifiso kwezimpawu zokuthengisangokuvamile iletha umnotho wesikhathi eside-ongcono kunokufana ngqo-nokushintsha{2}}njengokushintshaniswa.
Ukugcinwa Kokuvimbela
- Izilawuli zemvelo:Sebenzisa ngaphakathi kwebanga lokushisa elilinganiselwe lemojuli kanye nomswakamo, usebenzisa{0}}izimo ezimbi kakhulu zokuhlela. Ezindaweni{2}}ezinomswakama ophezulu, izindawo ezivalekile ezinezilinganiso ze-IP eziqinisekisiwe ziyimfuneko, hhayi ukuqapha.
- Ukuphathwa kwamandla:Sebenzisa izinto ezilawulwayo ezinokuvikelwa kokuhlinzwa kwehadiwe. Gwema ukukhanyisa amalambu angemuva ngokuqhubekayo ngokugqama okukhulu - ukulawula ukukhanya okuvumelana nezimo kunciphisa ukuguga kwe-LED ngaphandle komthelela obonakalayo ekusebenzisekeni.
- Ukuhlola okuhleliwe:Nyanga zonke - hlola indawo yokuhlala yesixhumi futhi ubheke ukuminyana. Ngekota - sebenzisa iphethini yokuhlola yokuxilonga futhi uqinisekise amandla kagesi alayishiwe. Minyaka yonke - hlola i-ripple yokuhlinzeka futhi uhlole izendlalelo ezibonakalayo ukuze uthole i-delamination noma ukuguga kwe-polarizer.
Ngoba-itheminali yesevisiukuthunyelwa okuqhubekayo okuqhubekayo-ezindaweni zethrafikhi ephezulu, ukuhlola kwekota kungumsebenzi wokulungisa owodwa ophezulu-wenani.Izikrini ze-LCD ezinwetshiwe ezisetshenziswa ezindaweni zesuphamaketheabhekane nokuchayeka okukhethekile kumswakama kanye namakhemikhali okuhlanza amashejuli okugcinwa okujwayelekile angeke akwazi ukubhekana nawo ngokugcwele.
imibuzo ejwayelekile ukubuzwa
I-LCD yami ibonisa isikrini esimhlophe - ingabe iphaneli iphukile?
Akunjalo. Isikrini esimhlophe ngokuvamile siwukuhluleka kokuxhumana noma ukuqalisa kunokulimala ngokomzimba. Qinisekisa ukucushwa kwephrothokholi - isilinganiso se-baud, imodi ye-SPI, noma ikheli le-I2C - usebenzisa idatha yemojuli. Lokhu kubaluleke kakhulu ngemva kokubuyekezwa kwe-firmware noma ukushintshaniswa kwebhodi lapho izilungiselelo kungenzeka ukuthi azidluliswanga kahle.
Ngingasho kanjani ukuthi i-backlight noma iphaneli ye-LCD yehlulekile?
Khanyisa ithoshi endaweni yesikrini nge-engeli egumbini elifiphele. Uma ubona isithombe esifiphele, iphaneli ikhiqiza okukhiphayo ngendlela efanele futhi i-backlight kuphela ehlulekile. Asikho isithombe nhlobo ngaphansi kwethoshi okusho ukuthi iphutha lisephaneli, ebhodini lomshayeli, noma indlela yesignali phakathi kwabo.
Ingabe isibonisi esicwayizayo singalungiswa ngaphandle kokushintsha imojuli?
Ezimweni eziningi, yebo. Ukucwayiza kuvame ukubangelwa intambo yeribhoni exegayo, ijoyinti le-solder eliseceleni, noma i-ripple yokuhlinzeka ngokweqile. Ukuhlalisa kabusha izixhumi nokuqinisekisa ukuzinza kwamandla kagesi ngaphansi komthwalo kuxazulula iningi lezikhalazo ezintengantengayo ngaphambi kokuba kudingeke noma iyiphi enye ingxenye.
Ingabe kuphephile ukufaka amandla kusibonisi esichayeke kumswakama?
Cha. Vumela imojuli ukuthi yome ngokugcwele{1}}esimeni esinomswakama ophansi ngaphambi kokufaka amandla. Ukunika amandla isibonisi esimanzi kubeka engcupheni ukugqwala kwe-electrode namasekhethi amafushane angalimaza unomphela iphaneli.
Kungani ukubonisa kwami kusebenza ebhentshini kodwa kuhluleke ensimini?
Ukwehluleka kwenkambu yesikhashana-kuphela ukwehluleka cishe njalo kubangelwa ukwanda okushisayo kwezinga lokushisa lokusebenza, ukudlidliza{1}}ubuncane besikhashana besixhumi esibangelwayo, noma ukujiya ngesikhathi sokuqalisa. Phinda futhi imvelo yangempela yokusebenzisa - izinga lokushisa, ukudlidliza, umswakamo - phakathi nokuhlolwa kwebhentshi. Ukuze uthole isiqondiso sokukhetha izingxenyekazi zekhompuyutha ezisingatha izimo ezinzima ngokungaguquguquki,lokhu kubuka konke{0}}kwezinketho zokubonisa ze-LCD zokusebenza okuphezuluihlanganisa ukuhluka kwezincazelo ezibaluleke kakhulu.
Isiphetho
Ukwehluleka kwemojula ye-LCD kuyafundeka uma wazi ukuthi yini okufanele uyibheke. Iphaneli elimnyama, isikrini esicwayizayo, okukhiphayo okubolile - imephu ngayinye eya ohlwini olulawulekayo lwezimbangela ezingaba khona, kanye nenqubo yokuxilonga ehlelekile ithola iphutha langempela ngokushesha kunokushintsha izingxenye ngokungahleliwe. Inqubo efanayo futhi ikutshela ngokucacile lapho ukulungisa sekuqalile futhi ukushintshwa kuyimpendulo efanele.
Uma ukwehluleka kwakamuva kufaka ihadiwe entsha ku-ajenda yakho, hlolaukuthi izikrini zesimanje ze-LCD zezentengiso ziqhathaniswa kanjani nezinketho zokubonisa zendabuko, nomahambisa uphenyoukuxoxa ngezidingo zakho zohlelo lokusebenza.
