Cov khoom siv ua kua siv lead ua ib txwm siv lub teeb txias cathode fluorescent teeb (CCFL) ua lub teeb pom kev zoo, uas muaj cov xim tsis zoo thiab muaj mercury vapor uas ua rau muaj kev phom sij rau tib neeg lub cev. Niaj hnub no, nrog txoj kev loj hlob ntawm thev naus laus zis, nws maj mam hloov los ntawm LED backlight. LED backlight muaj cov xim zoo dua qub, lub neej ntev, tsis muaj mercury, yog qhov zoo rau kev tiv thaiv ib puag ncig, thiab tuaj yeem ua haujlwm ntawm qhov hluav taws xob tsawg, muaj cov lus teb ceev ceev, thiab yooj yim dua rau kev tswj.
Lub teeb nraub qaum tau muab faib ua lub teeb pom kev ncaj qha thiab ntug-lub teeb backlight raws li txoj haujlwm ntawm lub teeb ci. Direct-lit backlights ncaj qha tso lub teeb ci LED hauv qab lub teeb-emitting nto. Lub teeb tawm los ntawm lub teeb ci yog diffused thiab sib xyaw los ntawm qhov chaw nyob deb thiab lub diffuser ua ntej yuav tawm los ua qhov chaw teeb pom kev zoo. Direct-lit backlights xav tau ib qho kev sib xyaw ntawm lub teeb. Lub ntug-lit backlight qauv yog zoo dua rau ultra-thin module tsim. Nrog rau" ultra-thin cua" tshuab, loj-loj ultra-nyias ntug-lit LED backlights tau dhau los ua kev tshawb fawb ntawm cov tuam txhab loj TV thiab cov tuam txhab ntws. Kub qhov chaw.
Tag nrho cov qauv ntawm LED backlight muaj xws li: LED lub teeb bar, tsav tsheb, zaj duab xis, lub teeb qhia phaj, tshav kub dab dej, sab sauv ncej, nraub qaum phaj, lens, thiab lwm yam. ua ib qho tseem ceeb hauv cov txheej txheem ntau lawm.
Lub teeb bar feem ntau yog ib txoj hlua ntev ntawm cov substrate, thiab cov ntaub ntawv muaj xws li: FR-4, hlau, ceramic, alloy, thiab lwm yam, thiab cov kev tso kawm tshwj xeeb yog cim rau ntawm lub substrate, feem ntau suav nrog 3-4 dispensing txoj haujlwm.
Lens, tseem hu ua LENS, cov ntaub ntawv muaj xws li: PC, iav, PMMA, silica gel, thiab lwm yam., muaj 3 los yog 4 tus pins sib raug rau cov kua nplaum txoj hauj lwm ntawm lub teeb bar, feem ntau qhov loj yog hais txog φ2cm, thiab tus pin qhov siab yog cav 1mm.
Tam sim no, txoj hauv kev kho LENS thiab lub teeb bar yog siv lub dispenser rau dispense kua nplaum ntawm lub teeb bar dispensing txoj hauj lwm. Cov kua nplaum yuav tsum muaj cov viscosity loj heev los xyuas kom meej tias cov kua nplaum ntawm 0.5-1mm qhov siab yog khaws cia li ntawm 3-5min, thiab tom qab ntawd lub lens muab tus pin rau hauv txoj hauj lwm sib txuas, ntxig tus pin rau hauv cov kua nplaum, ua cov kua nplaum tag. npog tus pin ntawm lub lens, thiab tom qab ntawd ua kom cov kua nplaum khov kho.
1. Pom zoo kua nplaum taw tes rau kev sib txuas ntawm lub teeb nraub qaum module lub teeb bar lens
Raws li cov txheej txheem sib txawv ntawm cov neeg siv khoom, muaj ob lub ntsiab ntawm LED backlight kua nplaum los ntawm Tiannuo Cov Khoom Siv Tshiab: epoxy resin structural kua nplaum thiab ultraviolet curing kua nplaum.
1. Ib qho epoxy nplaum nplaum:
siab viscosity, muaj zog adhesion, zoo cia, tuaj yeem kho tau ntawm 80 ℃, tsis muaj plua plav tom qab kho.
2, UV curing nplaum:
High viscosity, siab zog, zoo toughness, cuam tshuam tsis kam, haum rau kev sib txuas LENS thiab substrate.
