Farqiga ugu weyn ee u dhexeeya crystal dareere iyo balasmaha waa in crystal dareere ah waa in ay ku tiirsan yihiin il dadban, halka plasma TV iska leh qalab soo bandhigay luminescence firfircoon. Waqtigan xaadirka ah, teknoolajiyada ugu weyn ee dareere crystal backlighting suuqa waxaa ka mid ah LED (iftiin-firfircoon diode) iyo CCFL(lambalka qabow ee cathode fluorescent) LCD LCD waaQaab dhismeedka LCD waa Crystal dareere ah oo la dhex dhigo laba qaybood oo quraarad ah oo is barbar socda.Waxaa jira fiilooyin yar yar oo toosan iyo siman oo u dhexeeya labada qaybood ee muraayadda.
Karistaanka dareeraha ah lafteedu ma sii daayo iftiin, kaliya waxay soo saari kartaa isbeddelka midabka, waxay u baahan tahay iftiin dambe si ay u aragto waxa ku jira bandhigga. Farqiga u dhexeeya shaashadaha laptop-dhaqameedka, kuwaas oo isticmaala tuubooyinka fluorescent ee cathode qabow (CCFL) sida iftiinka dambe, iyo muraayadaha LED. kuwaas oo adeegsada diodes-ka-iftiinka (leads), waa taas. LED-ga cad waa isha iftiinka, CCFL tube waa isha iftiinka. Waxay leeyihiin wax ka badan dhowr watts, waxaad u baahan tahay inaad tixgeliso wareegga ku habboon ee wadista si aad u wanaajiso waxtarka. CCFL waa inay lahaataa "saxadda cadaadiska sare" isticmaalka u dhigma. CCFL (Cold Cathode Fluorescent Lamp) ama waxa loo yaqaan CCFT
CCFL (lambalka qabow ee cathode fluorescent) dhabarka waa sheyga ugu weyn ee iftiinka dambe ee LCD TV.It wuxuu shaqeeyaa marka danabka sare ee labada daraf ee tuubada, tuubada ku dhex jirta dhowr saameyn xawaare sare oo elektiroonig ah ka dib markii korantadu ay soo saarto qiiqa elektarooniga ah, bilaabay inuu sii daayo, tuubada meerkuri ama gaaska inert elektarooniga ah saamaynta ka dib, shucaaca excitation 253.7 nm ultraviolet iftiinka, ultraviolet excitation of tu fosfooraska derbiga tuubada oo soo saara iftiin muuqda. CCFL nolosha guud ahaan waxaa lagu qeexaa sida: at 25 ℃ heerkulka deegaanka, lagu qiimeeyay. Laydhka darawalka ee hadda jira, iftiinka ayaa hoos u dhacay 50% iftiinka bilowga ah ee dhererka wakhtiga nolosha laambada. Waqtigan xaadirka ah, nolosha magaca ah ee iftiinka dambe ee LCD TV wuxuu gaari karaa saacadaha 60,000. CCFL dhabarka dambe waxaa lagu gartaa qiimo jaban, laakiin waxqabadka midabka uma fiicna sida iftiinka dambe ee LED.
Nalalka LED-ku waxay u isticmaalaan LED sida isha iftiinka, taas oo ah tignoolajiyada ugu rajo-gelinta badan si ay u bedesho tuubada fluorescent ee cathode dhaqameed ee mustaqbalka. Leds waxay ka samaysan yihiin lakabyo khafiif ah oo ah walxo semiconductor ah, mid ka mid ah electrons xad-dhaaf ah, iyo kan kale iyaga oo aan lahayn. abuurista godad si togan loo dallacay iyada oo electrons iyo godadka isku daraan sida korontadu u gudubto, sii daayo tamar xad-dhaaf ah ee qaabka shucaaca iftiinka.Leds leh sifooyin luminescence kala duwan waxaa lagu heli karaa iyadoo la isticmaalayo qalab semiconductor kala duwan.Leds horeba isticmaalka ganacsiga ku siin kara casaan, cagaar, buluug. , cagaar, oranji, amber iyo caddaan.Telefoonka gacanta waxa uu badiyaa isticmalaa nalka LED-ka ee cad, halka nalka LED-ka ee lagu isticmaalo TV-ga LCD uu noqon karo caddaan, casaan, cagaar iyo buluug.Alaabooyinka ugu sarreeya, nalalka LED-ka ee midabada badan ayaa sidoo kale lagu dabaqi karaa si loo sii wanaajiyo muujinta midabka, sida lix midab oo asaasi ah oo LED ah. Faa'iidada iftiinka iftiinka LED waa in dhumucdiisu ay khafiif tahay, qiyaastii 5 cm, iyo midabka midabka waa mid aad u ballaaran, kaas oo gaari kara 105% gamut midabka NTSC.Dareeraha iftiinka madow ee madow waxaa lagu yarayn karaa 0.05 lumens, taas oo ka dhigaysa saamiga isbarbardhigga TV-ga LCD sida ugu sarreeya 10,000: 1. Isla mar ahaantaana, isha iftiinka dambe ee LED wuxuu leeyahay 100,000 saacadood oo kale oo nolosha ah. Waqtigan xaadirka ah, dhibaatada ugu weyn ee xaddidaya horumarinta iftiinka dambe ee LED waa kharashka, sababtoo ah qiimaha ayaa aad uga sarreeya isha iftiinka ee nalka fluorescent qabow, Ilaha iftiinka iftiinka LED wuxuu ka muuqan karaa oo keliya LCD TVS-ga sare ee dibadda.
Faa'iidooyinka isha iftiinka dambe ee LED
1. Shaashada waxaa laga dhigi karaa mid khafiif ah.Haddii aan eegno qaar ka mid ah LCDS, waxaan arki karnaa in ay jiraan dhowr fiilooyinka CCFL tubes habaysan.Backlighting, dhanka kale, waa shay siman iftiin-bixiya, u baahan ma qalab dheeraad ah.
2. Saamaynta sawirka ka sii wanaagsan CCFL screen backlit guud ahaan waxay leedahay dhalaal kala duwan ee dhexda iyo agagaarkeeda, iyo qaar cadcad marka shaashadu gabi ahaanba madow tahay
Laambadaha fluorescent CCFL, sida nalalka dhaadheer, da'da waqti ka dib, markaa muraayadaha laptop-yada dhaqameedku waxay isu rogi doonaan huruud iyo madow laba ama saddex sano ka dib, halka muraayadaha iftiinka LED-ku ay sii socon doonaan muddo dheer, ugu yaraan laba ama saddex jeer ka badan.
Dhammaanteen waan ognahay in nalalka fluorescent ay u baahan yihiin danab sare si ay u qarxiyaan uumiga meerkuriga, sidaas darteed isticmaalka awoodda shaashadda CCFL waa mid weyn, guud ahaan 14 inji oo isticmaalka awoodda in ka badan 20 watts. Leds waa semiconductors kuwaas oo ka shaqeeya danab hooseeya, waa sahlan tahay qaab dhismeedka. oo ay isticmaalaan awood yar, taas oo ka dhigaysa gaar ahaan kuwa u wanaagsan nolosha batteriga laptop-ka.
5. Meerkuriga ku jira nalalka CCFL-ka oo deegaan ahaan u wanaagsan ayaa deegaanka u keenaya wasakh weyn, aad bayna u adkaan doontaa in dib loo warshadeeyo si aan waxyeello lahayn.
Mabda'a shaqada ee CCFL qabow cathode fluorescent laambad
Halabuurka jireed ee CCFL qabow nalka fluorescent cathode waa in gaaska qallafsan ee Ne+Ar ee ka kooban uumiga meerkuri (mg) lagu shaabadeeyey tuubo dhalada ah iyo walaxda fluorescent waxaa lagu dahaadhay gidaarka gudaha ee galaaska.CCFL qabow tuubooyinka fluorescent cathode. Ku sii daaya iftiin adoo garaacaya budada fluorescent ee derbiga leh iftiinka ultraviolet oo uu ku faraxsan yahay meerkuriga gaaska iyada oo loo marayo electrodes ee labada daraf ee tuubada. Mawjada dhererka waxaa lagu go'aamiyaa sifooyinka walxaha fluorescent.
Cilad ku timid CCFL qabow nalka fluorescent cathode
Isha iftiinka CCFL ee dareeraha crystal TV ISTICMAALO inta badan wakhtigan xaadirka ah, iyada oo aan loo eegin in ay iska bixiso mabda'a iftiinka ama qaab dhismeedka jirka, fiiri tuubada iftiinka ee aan isticmaalno maalin kasta si aad u dhow. heerkulka hooseeya ee dusha sare ee tuubada, dhalaalka sare ee dusha sare ee tuubada iyo farsamaynta fudud ee qaabab kala duwan. Laakiin nolosha adeeggu waa gaaban tahay, waxaa ku jira meerkuri, midabka gambit waa cidhiidhi, kaliya wuxuu gaari karaa NTSC 70% ~ 80%-weyn - cabbirka shaashadaha TV-ga, korantada CCFL iyo habaynta dhuumaha fidsan way adagtahay.
Marka hore, madax xanuunka ugu weyn waa cimriga gaaban ee nolosha. CCFL nolosha adeega dhabarka guud ahaan waa 15,000 saacadood ilaa 25,000 saacadood, inta ay sii dheeraato isticmaalka LCD(gaar ahaan laptop LCD), waxaa sii muuqda hoos u dhaca dhalaalka, isticmaalka 2-3 sano , Shaashadda LCD waxay noqon doontaa madow, jaalle ah, tani waa nolosha gaaban ee cilladaha CCFL ee ay sababtay.
Marka labaad, waxay xaddidaysaa ciyaarta midabka LCD. pixel kasta oo LCD ah wuxuu ka kooban yahay R, G iyo B blocks midab leydi ah, iyo waxqabadka midabka LCD gebi ahaanba waxay ku xiran tahay waxqabadka moduleka iftiinka iyo filimka midabka midabka. midabada filimka shaandhada waxay la mid yihiin iftiinka cad ee ay soo saarto CCFL (ka kooban saddexda midab ee aasaasiga ah), laakiin moduleka CCFL dhab ahaantii ma buuxin karo shuruudaha naqshadeynta, kaliya qiyaastii 70% ee heerka NTSC.
Saddexaad, qaab-dhismeedku waa mid adag oo isku-duubnida wax-soo-saarka dhalaalku waa mid liidata.Sababtoo ah nalka fluorescent cathode qabow maaha il iftiin diyaaradeed, si loo gaaro wax soo saarka dhalaalka isku midka ah ee iftiinka dambe, moduleka iftiinka dambe ee LCD wuxuu u baahan yahay in lagu qalabeeyo qalab badan oo caawiya. sida saxanka faafiya, saxan hagaha iftiinka iyo saxanka milicsiga.
Afaraad, mugga weyn, isticmaalka korantadu maaha mid ku habboon. Mugga LCD lama sii dhimi karo sababtoo ah CCFL iftiinka dambe waa inuu ka kooban yahay saxan fidiyaha, saxan ka tarjumaysa iyo aaladaha kale ee adag ee indhaha. aan ku qanacsanayn, maadaama 14-inch LCDS ay u baahan yihiin 20W ama ka badan.
Dabcan, labadii sano ee la soo dhaafay soo saarayaasha gudaha iyo kuwa ajnabiga ah marka loo eego cilladaha CCFL-dhaqameedka waxay sameeyeen qaar ka mid ah hagaajinta, waxay u muuqdaan inay gaareen heer aad u sarreeya, wax-soo-saarka wax-soo-saarka ayaa sheegay in sixirka, laakiin hagaajintaani waa xaddidan tahay, oo aan si buuxda u baabi'in karin. cilladaha farsamada ee lagu dhasho ee CCFL.
Waqtigan xaadirka ah, nalka dambe wuxuu u badan yahay tuubada CCFL, qiimaha ayaa laga yaabaa inuu yara hooseeyo, tignoolajiyada ayaa aad u bislaaday.Iftiinka dhabarka ee LED wuxuu sidoo kale ku xaddidan yahay alaabooyinka shaashadda yar yar sida taleefanka gacanta, MP3, MP4, iwm. Wixii alaabooyinka waaweyn ee shaashadda, waa weli jihada dadaalka.Si kastaba ha ahaatee, waa tamar-badbaadin badan, taas oo faa'iido u leh
Waqtiga boostada: Juun-29-2019