Allon haya na LED: duba cikakkun bayanan allo na haya

2021/01/06

Abubuwan amfani na allon haya suna ƙayyade cewa yakamata ya kasance halaye ne na "kyakkyawar kamanni, haske da ɗaga hannu, daidaitaccen abin dogaro", musamman matsalar shigarwa, suna fuskantar dogon lokaci da maimaita amfani. Sauran kuwa shine bidi'a , ta fuskar sabon buƙatar kasuwar haya, don samun ƙira ta musamman.

A cikin 'yan shekarun nan, ko shirye-shiryen TV daban-daban ko ainihin wasan kwaikwayo a gidajen kallo, don nuna bambancin da bambancin tasirin matakin, ana amfani da adadi mai yawa na allo a cikin matakin. fasalin zane tare da nuni na LED (wanda aka fi sani da allon haya a masana'antar), mai zuwa don kuyi bayanin ilimin da ya dace na allon haya ta LED daki-daki.

Tsarin mataki tare da fasalin nuni na LED

Allon nuni na LED don nuna zane-zane iri-iri (wanda aka fi sani da allon haya a masana'antar) da kuma tsayayyar shigar da allo na zamani (wanda aka fi sani da allo na injiniya a cikin masana'antar) suna da manyan bambance-bambance a cikin tsari da tsarin tsarin. Allon nuni na allo don zane-zane yafi haɗuwa da buƙatun ƙirar matakai daban-daban:

1) An rarraba akwatunan nuni masu yawa a cikin yankin nuni wanda ke biyan bukatun ƙirar matakan. A halin yanzu, yankin nuni na akwatin shine 512 mm × 512 mm, 576 mm × 576 mm da 1 000 mm × 500 mm.

2) Don sauƙaƙe shigarwa da rarrabawa, akwatin nuni yana buƙatar haske da ƙanana; Don tabbatar da ingancin nuni da ƙira daidai, ana buƙatar akwatin nuni don samun ƙarfi mai ƙarfi tare da ci gaba da raguwar nunin pixel mai nunawa. , kasuwar amfani magnesium titanium gami ko carbon fiber abu sanya daga nuni akwatin tsari, amma mafi dace ko aluminum akwatin, baƙin ƙarfe akwatin sannu a hankali ana kawar da.

3) Domin inganta ɗinka daidaitattun abubuwa da rarraba katako tsakanin akwatunan, akwai na'urori masu kullewa da sauri tsakanin akwatunan, har ma da masana'antun da yawa ma suna samar da hanyar sanyawa tsakanin kwalaye.

4) Don kare sashin fitar hasken LED wanda zai iya lalacewa ta hanyar karo yayin tarwatsewa da haduwa akai-akai, masana'antun galibi suna girka wani abu mai kariya wanda ake kira maski a gaban sashen fitar da hasken LED.

5) Don jimre wa manyan buƙatu na aminci kamar watsa shirye-shiryen TV, siginar tushen abun ciki da tsarin watsa sigina mai sarrafawa ya kamata suna da aƙalla madadin sau biyu; Hakanan don buƙatun ƙaƙƙarfan amincin, wasu masana'antun sun tsara tsarukan tsaftacewa ko tsari mai saurin sauyawa .

Na'urar fitar haske (fitilar LED)

Nunin LED nuni ne wanda aka hada shi da matrix na LED.Saboda daidaiton launi na fitilar manna tebur yana da kyau, Angle na kallo yana da girma, kuma tasirin hada launi yana da kyau sosai, a halin yanzu, kusan 100% LED nuni don zane-zane yana ɗaukar abubuwa uku-cikin-ɗaya na teburin tebur.Saboda haka, wannan takarda kawai tana bayanin halaye masu alaƙa da fitilar ƙasa, wanda yawanci ya ƙunshi guntu, sashi, gubar, harsashi da manne mai cikawa. kasuwa sunkai mil 6 (1mil = 0.001in = 0.00254cm), 7mil, 8mil, 9mil, 10mil, 12mil, 14mi, da sauransu, wafer ɗin masana'anta iri ɗaya ya kasu zuwa girman girman guntu daban, ƙaramin girma, girman motar na yanzu a kowane yanki guda guda; Akasin haka, ya fi girman girman guntu, karami yake tuki a kowane yanki yanki guda daya.Sai dai, yayin da girman guntu ya canza, karfinsa na yanayin zafi ma yana canzawa, don haka dangantakar dake tsakanin guntu da abin da ake bukata tuki a halin yanzu ba layi ba ne a karkashin jigon lum Domin tabbatar da haske, daidaito da kwanciyar hankali na fitilar tebur, zaɓin kayan guntu zai zama aiki mai mahimmanci, alal misali, ɗayan mafi kyawun haɗin kwakwalwan gida shine Taiwan mai haske ja LED + Hangzhou shuɗi da kore LED.

Tsarin sashi gabaɗaya an kasu zuwa tsarin PCB da sashin ƙarfe, ƙarfe na jan ƙarfe, sashin ƙarfe na tagulla, da dai sauransu. bayyanar tinning ko zoben azurfa. Yanayin yanayi daban daban ya banbanta. Samfurai masu ƙayyadaddun masana'antu suna amfani da baƙin ƙarfe na ƙarfe.Ya kamata a sanya sashi na jan jan ƙarfe da shigo da kayan PPA gwargwadon iko don tabbatar da yaduwar zafi da kwanciyar hankalin samfurin.

Hakanan, jagororin suna da baƙin ƙarfe, jan ƙarfe, gami, gwal na gwal da sauran zaɓuɓɓuka, igiyar zinariya ta Heraeus 99.99% na ɗayan samfuran da suka dace.Mafi yawan manne cike da ake amfani da shi a cikin fitilar tebur na nuni ana shigo da shi daga Japan. Kowane kamfani na kwalliyar guntu zai daidaita madaidaicin tsari gwargwadon halaye na samfurin, don yin fitilar teburin tebur yana da ƙarfin juriya mai kyau, ƙarancin haske mara nauyi da daidaita yanayin damuwa.

Don inganta bambancin allon nuni da rage ƙwanƙwasa hasken fage, an gabatar da manufar hasken jikin baƙar fata a cikin marufin fitilar manna agogon. Na'urar tana amfani da zane-zane mai launin baki baki, don kara inganta bambancin allon nuni. An tsara fuskar da ke jikin na'urar tare da farfajiyar iska don rage tsangwama mai nunawa da kuma nuna allon ya zama mai taushi da haske. Koyaya, amfani da fitilar jikin baƙar fata zai rage ƙwanƙwasawar halin tuki guda ɗaya, don haka nunin LED tare da buƙatun haske iri ɗaya zai ƙara farashin masana'antu.

Domin inganta Anguwan kallon a kwance da kuma daidaita daidaituwa tsakanin hagu da dama na matakin nuni, masana'antun marufi na fitilun teburin teburin suma sun karɓi tsarin tsarin guntu guda "ɗaya" don maye gurbin farkon "samfurin" glyphs tsari.

Ana buƙatar kulawa da wannan nuni teburin da aka yi amfani da shi don manne fitila dole ne ya yi amfani da tsari iri ɗaya bayan gwajin zaɓi na haske, saboda hakan yana amfani da yanki ɗaya na ɓarkewar wafer, girman girman guntu, a cikin wannan hanyar ta yanzu Yanayi ya banbanta da na zango na haske mai haske ana yin shi, rarraba ƙazantarwar da rashin daidaituwa ya haifar (da wafer) da kuma buƙatun janar na teburin da aka yi amfani da su a cikin fitilar sandar allon guda daban-daban ƙarfin su zama cikin + / - 5 nm a A sabili da wannan dalili, ba a ba da izinin cakuda fuskokin allo daban-daban a cakuɗe su ba.

LED Module

Ma'anar tsarin nuni na LED shine samfurin samar da taro. A zahiri, ya riga ya zama na'urar matrix ta LED. Da yawa kayayyaki sun zama fuskar nuni na akwatin nuni.Yana kunshi harsashi na ƙasa (tsari), allon PCB da abin rufe fuska. An rarraba kwamitin PCB gaba ɗaya tare da fitilar farfajiyar farfajiya ta saman, tuki IC, dikodi mai lamba IC, sigina da mahaɗan masu alaƙa da wutar lantarki da sauran kayan haɗin lantarki.

Daga farfajiyar, ƙasan harsashin rukunin koyaushe shine tsarin ɗaukar hoto na hukumar PCB. A zahiri, daidaituwar kansa, ƙarfi da aikin watsa zafi suna da mahimmanci ga jikin nuni.Koda yake mafi yawancin kayayyaki an yi su ne da filastik injiniya, ƙananan samfuran samfuran an yi su ne da aluminum. daidaiton aikin inji da ƙarfi na ƙashin ƙirar ƙirar kanta, amma a lokaci guda, zai rage ƙimar samarwa.

Bearingarfin ɗaukar hoto akan sigar nunawa yana da girma, kuma bukatun aminci suma suna da yawa, don haka kayan PCB gabaɗaya farantin FR4 ne da 94V0.Kuma saboda LED kayan aiki ne na nunawa, don haka digiri na shafin PCB yana da buƙatu masu yawa, don haka yin amfani da farantin matakin farko 1. Kaurin samfurin da aka gama shi ne 1.6mm ko 2.0mm don tabbatar da flatness na PCB na samfurin nunawa. Bugu da kari, yakamata a yi la’akari da rarraba zafin a cikin tsarin kewayen PCB don rage tasirin na zafin jiki akan bututun mai fitar da haske. A cikin da'irar zuwa layin wutar da layin ƙasa koda wayoyi ne, saboda rarraba zafin ya zama iri ɗaya, guji saboda zafin da ya faru sakamakon abin da ya faru na wuraren haske a kan tebur.

Don sanya samfuran su cika ƙa'idodin EMC, wayoyin PCB da kuma marufi na kayan haɗin jirgi duk suna buƙatar madaidaicin ƙira da zaɓi. A cikin tsarin tsarin PCB, ana amfani da matattara don sarrafa tsangwama da aka gudanar.Ya samar da ingantaccen ƙaddara ƙarfin ƙarfin yin aikin jirgin IC yana aiki abin dogaro, kuma yana rage amo mai yawa a cikin wutan lantarki, saboda haka yana rage EMI.Domin tasirin tasirin shigar waya da sauran sifofin parasitic, saurin amsawar samar da wuta da kuma madugun mai kawo shi a hankali, wanda zai sanya saurin halin yanzu da ake buƙata don fitar da IC a cikin sauri mai sauri bai isa ba.Hankin da aka tsara na kewayewa ko ƙaddamar da ƙarfin haɗi da rarraba ƙarfin a cikin layin samar da wuta na iya samar da kayan aiki na yanzu da sauri ta amfani da ajiyar makamashi na masu ƙarfin ƙarfin kafin ƙarfin Amsawa.Yarda da karfin capacitance shine mabuɗin don rage yanayin EMI na yau da kullun. Tsarin ƙasa shine mabuɗin don rage EMI na ɗaukacin kwamitin. , filaye masu yawa da yawa ko yanayin ƙasa mai haɗuwa.Digital ƙasa, analog ƙasa da ƙasa mai amo, kuma ana amfani da ƙirar jirgin sama mai ɗumbin yawa don tabbatar da cewa akwai jirgin saman ƙasa don rage ƙarancin ƙasa.

IC mai arha mai sauƙi ne kawai ke ba da aiki na yau da kullun don jagorar LED (ta hanyar iyakancewar ƙayyadadden halin yanzu, kusan ba za a iya daidaita shi bayan masana'anta ba), kuma kulawar haske ta LED tana zuwa ne daga siginar kashe katin karɓa (OE + Data = PWM) , matsakaicin ƙarfin shakatawa zai kasance a ƙarƙashin iyakar mafi girman agogo da ake samu akan allon PCB.Kuma tare da aikin PWM mai daidaita yanayin buguwa na direban IC, ban da samar da aikin tuki na yanzu, ƙarfinsa na tsaye zai iya kuma Kasance mai kyau ta hanyar ginannun rijista (ma'ana, daidaiton riba na yanzu) .Mene yafi banbanta shine yana daidaita hasken LED na siginar PWM da aka samar ta da kansa cikin gutsun, ma'ana, idan dai bayanan haske an ba ta shi zai iya cimma ikon sarrafa hasken wutar lantarki a mafi ƙarancin wartsakewa.ICs tare da PWM adaptive pulse wide modulation aiki suna daidai iya cimma babban ingancin nuni har ma a ƙaramin zagayen agogo maras kyau ncies (alal misali, mitar agogo 6MHz ce kawai, yayin da ICs na al'ada ke buƙatar aƙalla 18MHz don kwatankwacin wannan shaƙatawa) .Rage mitar agogon PCB yana da mahimmin mahimmanci mai kyau ga EMI.

Don IC mai tuka-kai, halin yanzu fitowar kuskuren da ke tsakanin kwakwalwan kwamfuta da fil abu ne mai matukar muhimmanci.Yawancin ICs na yau da kullun suna aiki tare gabaɗaya tare da ikon tuki na fitilun LED 8 ~ 24. Bayan cikakkiyar la'akari da hasken nunin, komitin komputa na PCB mai dauke da yalwa, shakatawa mitar buƙata, amfani da ƙarfi da ƙimar masana'antu, waɗannan IC-drive ɗin na yau da kullun suna aiki tare tare da kewaya yanayin juyawa a cikin yanayin binciken.

Haske na LED

Maski na iya kare bututun fitowar fitilun LED da kwamiti na PCB, don haka samfurin a yayin tarwatsewa da sarrafawa don kauce wa haɗarin LED zuwa lalacewar fitilar LED da kwamiti na PCB; A lokaci guda, shi ma yana iya kawar da sabon abu mai gani na zamani (ta hanyar kafa tsarin rubutun saman), don tabbatar da cewa taron naúrar nuni ba tare da bayyananniyar layuka da duhu ba; Hakanan za'a iya amfani dashi don kariya ta UV ta waje (ta hanyar ƙirar da ke sama).

Saboda abin rufe fuska yana gaban hasken mita na LED, tsarinta zai taka muhimmiyar rawa a cikin kallon Angon dukkan nunin.Don wannan dalili, shi ne fuskar dukkan nunin, daidaiton launinsa kuma yana da mahimmanci , da yawa masana'antun sunyi amfani da tsarin "mai fesawa" don kara bayyanar daidaiton jikin allo, kuma launi tawada shima yana taimakawa wajen inganta bambancin nuni.

Kodayake abin rufe fuska karami ne, ba shi da sauki a kera shi. Hardarfi da taushi na kayan maskin ya zama matsakaici kuma flatness ya zama babba. Musamman, haƙurin masana'antu yana da matukar wahalar sarrafawa saboda raguwa bayan lalatawa da tasirin yanayin zafin yanayi.

LED HUB

HUB hukumar sake rarraba sigina ce wacce ke haɗa sigar LED da katin karɓa. Hanya mafi sauki ita ce haɗawa da samfurin nuni na LED tare da allon PCB da layin waya.Domin yawan buɗe kayan ado yana da girma sosai, wannan haɗin yana da saurin fuskantar mummunan halayen haɗin haɗi, amma tare da ci gaban rawar kyakkyawar allo, da kwanciyar hankali na siginar allo na buƙatar yana da girma kuma mafi girma, don haka yanzu ga wasu samfuran ƙarshe suna amfani da allon PCB tare da masu haɗin haɗi masu saurin gaske, suna amfani da hanyar ƙwanƙwasa dunƙulewa, kauce wa faɗakarwa yayin aiwatarwa da jigilar jirgin HUB yana kwance kuma yana haifar da sigina ba shi da karko.

HUB ita ce gada tsakanin tsarin sarrafawa da tsarin nunawa. Kodayake masu samar da tsarin kula da LED gabaɗaya suna samar da samfuran HUB, amma yawancin masana'antun nuni suna tsara nasu allon na HUB. A cikin ƙirar HUB, EMI ƙira da kwanciyar hankali yakamata a bincika su sosai. , ana watsa dukkan sigina da samar da wuta ta hanyar PCB, don samfurin ya zama mafi taƙaitacce, mafi kyawun tsari, yayin guje wa yin amfani da haɗin waya wanda aka samu ta hanyar fitowar hasken wuta. Hakanan ana karɓar rarar madadin a cikin siginar sigina, wanda ke haɓaka kwanciyar hankali na samfurin.

LED Nuni hukuma

Ta hanyar tattara abubuwan da ke sama da akwatin, ana fahimtar akwatin nuni.