Kodi LED ndi chiyani? Zimayatsa zinthu zomwe mumagula nthawi zonse
Ma LED ali paliponse; pali mwayi wochuluka kuti mukuwerenga nkhaniyi yokhudza ma LED ndi kuwala komwe kumachokera ku LED kapena imodzi. Kotero, kodi heck ndi LED kotani? Iwe uli pafupi kuti upeze.
Tanthauzo la LED
LED imayimira Diode-Emitting Diode, chipangizo chamagetsi chopangidwa ndi mitundu iwiri yosiyana siyana ya semiconductor material . Mofananamo mu lingaliro la ma semiconductor zinthu zomwe zimagwiritsidwa ntchito mu zigawo zosiyanasiyana za makompyuta, monga RAM , zothandizira, ndi zogwiritsira ntchito, ma diode ndi zipangizo zomwe zimalola kuti magetsi awonongeke mwa njira imodzi yokha.
Dzuwa likuchita chinthu chomwecho: Imalepheretsa kuyendetsa kwa magetsi kumbali imodzi ndikuilola kusuntha mwaufulu. Pamene magetsi ali ngati ma electron amayendayenda pambali pakati pa mitundu iwiri ya zakuthupi, mphamvu imaperekedwa mwa mawonekedwe a kuwala.
Mbiri ya LED
Chiwongoladzanja choyambirira cha nyenyezi ndi cha Oleg Losev, wojambula ku Russia amene adawonetsa kuwala mu 1927. Zinatenga pafupifupi zaka makumi anayi zisanayambe ntchitoyi isanagwiritsidwe ntchito, komabe.
Ma LED anayamba kuonekera pa ntchito zamalonda mu 1962, pamene Texas Instruments anapanga kuwala kwa LED komwe kunapereka kuwala muzitsulo. Ma LED oyambirirawa amagwiritsidwa ntchito makamaka pa zipangizo zakutali, monga mapulogalamu oyambirira a televizioni .
Kuwala kowala koyambirira koyamba kunayambanso kuonekera mu 1962, kutulutsa kuwala kofiira koma kooneka kofiira. Zaka khumi zinkadutsa usanayambe kuwonjezeka, ndipo mitundu yambiri, yachikasu ndi yofiira-lalanje, inapangidwa.
Ma LED adachoka mu 1976 ndi kuunika kwapamwamba kwambiri komanso zitsanzo zabwino zomwe zingagwiritsidwe ntchito pamagwiritsidwe osiyanasiyana, kuphatikizapo mauthenga komanso ngati zizindikiro mu instrumentation. Potsirizira pake, ma LED anali kugwiritsidwa ntchito mu ziwerengero monga mawerengedwe a manambala.
Blue, Red, Yellow, Red-Orange ndi Green Zowala Kuwala
Ma LED kumapeto kwa zaka za m'ma 70s ndi oyambirira 80s anali ochepa kwa mitundu yochepa chabe; zofiira, zachikasu, zofiira, ndi zobiriwira zinali mitundu yotchuka. Ngakhale zinali zotheka mububu kuti apange ma LED omwe ali ndi mitundu yosiyana, mtengo wogulitsa unapitiriza kuwonjezera kuwonetsera kwa mtundu wa LED kuchokera pokhala opangidwa ndi misala.
Zinkaganiziridwa kuti kuwala kowala kumene kumawunikira pamtundu wa buluu kungalole kuti LED zizigwiritsidwa ntchito muzithunzi zonse. Kufufutika kunali pa LED yotulutsa mawonekedwe a buluu, omwe, palimodzi ndi ma LED omwe ali ofiira ndi achikasu, akhoza kupanga mitundu yosiyanasiyana ya mitundu. Loyamba lowala kwambiri labuluu la LED linapanga chiyambi chake mu 1994. Mphamvu zam'mwamba ndi zowonjezera zamadzimadzi a LED zinaonekera patapita zaka zingapo.
Koma lingaliro la kugwiritsira ntchito ma LED a mawonetsero onsewa sanagwiritsidwe ntchito kwambiri mpaka kuyambika kwa LED yoyera, yomwe inachitika posakhalitsa pambuyo pa kutuluka kwapamwamba kwa ma LED a buluu.
Ngakhale mutatha kuona mawu akuti TV kapena LED, mawonekedwe ambiriwa amagwiritsira ntchito LCD (Liwudi Crystal Display) kuti ziwonetsedwe zenizeni, komanso kugwiritsa ntchito LED kuti ziwalitse LCD . Izi sizikutanthauza mawonedwe enieni ochokera ku LED sapezeka m'mayang'anitsulo ndi ma TV mwa kugwiritsa ntchito zipangizo zamakono za OLED (Organic LED) ; amangofuna kukhala olemera komanso ovuta kupanga pamakono akuluakulu. Koma pamene njira yopanga zinthu ikupitirira kukula, momwemonso kuunikira kwa LED.
Zimagwiritsa ntchito ma LED
Zipangizo za LED zikupitirizabe kukula ndipo ntchito zosiyanasiyana za LED zakhala zitapezeka kale, kuphatikizapo:
- Ma LED osokoneza ntchito ogwiritsira ntchito zipangizo. Onani kuti kutali kwa TV; Mwaiwo pali maulendo opera maulendo pamapeto a bizinesi a kutali.
- Ma LED amagwiritsidwa ntchito ngati magetsi oyendera magetsi ndi zipangizo. Panthawi imodzi, magetsi a neon ndi magetsi osokonezeka amagwiritsidwa ntchito. Tsopano ma LED, omwe ali opambana kwambiri, amakhala ndi moyo wautali, ndipo kawirikawiri amakhala otsika mtengo, atenga ntchito iyi.
- Ma LED amagwiritsidwa ntchito pa mawonetsero, kuphatikizapo mawonetsero a alphanumeric omwe amawoneka mu chirichonse kuyambira oyambira oyambirira mpaka maola, zizindikiro zamalonda, ndi mawonetsero owonetsera. Ndipo musaiwale kuti mwina TV yanu ndi mawonekedwe a kompyuta akugwiritsa ntchito ma LED kuti aunikire mawonedwe.
- Ndipo ndithudi, ife sitingakhoze kuiwala kuwala; Ma LED ali ndi njira yowonjezerapo m'malo mwa mababu a kuwala omwe amapangidwa ndi Thomas Edison. Ali panjira, akuyenda bwino m'makomo ndi malo ogulitsa akuwonanso ntchito zochepa.
Ma LED adzapitiriza ntchito zosiyanasiyana, ndipo ntchito zatsopano zikutulutsidwa nthawi zonse.