Yuav Ua Li Cas Xaiv Txoj Kev Sib Txuas Ntawm Lub Teeb Backlight?
Apr 11, 2022
Lub backlight ntawm ntu LCD npo tuaj yeem muab faib ua peb hom raws li txoj kev sib txuas: hauv -kab teeb, SMD lub teeb, thiab lub teeb qhia phaj tsis muaj lub teeb. Ntawm lawv, SMD lub teeb tuaj yeem muab faib ua SMD liab thiab dub kab, SMD mos Hlau taw, thaj txhuam hniav. Hnub no, kuv yuav qhia rau koj paub qhov zoo thiab qhov tsis zoo ntawm txhua txoj kev.
Ua ntej tshaj plaws, hauv - kab teeb yog ib txheej txheem yooj yim heev. Txhawm rau muab nws bluntly, nws yog lub teeb -emitting diode tsau rau txoj hauj lwm ntawm lub teeb lub taub hau zaj duab xis nrog kua nplaum, yog li tus nqi kuj pheej yig. Rau lub backlight nrog ib lub teeb lossis ob lub teeb, koj tuaj yeem xaiv ua nws. Txuas lub teeb. Disadvantages: 1. Vim hais tias cov hlaws dai ntawm lub teeb nyob rau hauv - kab teeb loj dua, lub teeb qhov muag loj dua, yog li lub taub hau zaj duab xis feem ntau ua ntau tshaj 7MM, uas yog mob taub hau rau cov phooj ywg uas muaj qhov txwv ntawm qhov chaw. Circuit Board; 2. Cov pob qij txha ntawm lub hauv- kab txuas Ntxiv, ib lub teeb hlaws sib raug rau 2 lub pob qij txha, yog tias muaj pes tsawg lub teeb hlaws loj, tus nqi ntawm kev ua hauv - kab teeb yuav yog heev. siab.
Qhov thib ob, SMD teeb, raws li tau hais los saum toj no, tuaj yeem muab faib ua peb hom: kab liab thiab dub, mos hlau taw, thiab txhuam hniav. SMD lub teeb yog los lo rau lub teeb hlaws ntawm ib qho me me ntawm PCB, thiab tom qab ntawd muab nws tso rau hauv lub teeb qhia phaj. Vim tias nws yog SMD ntim lub teeb hlaws, nws yog hu ua SMD teeb. Qhov zoo tshaj plaws ntawm qhov teeb pom kev zoo yog tias txawm tias muaj pes tsawg lub teeb hlaws, tsuas muaj ob tus pins zoo thiab tsis zoo.
Txoj kev sib txuas ntawm cov kab liab thiab dub yog hloov tau yooj yim dua. Rau qhov txwv qhov chaw ntawm PCB, cov khoom tuaj yeem hla dhau thiab cov pob qij txha tuaj yeem raug xaiv, thiab cov txheej txheem txheej txheej ntawm ob kab yog qhwv nrog cov ntaub ntawv insulating, yog li ntawd yuav tsis muaj luv luv Circuit Court. Disadvantage: Thaum lub sij hawm kev thauj mus los los yog ua, cov hlau lead liab thiab dub yog ib qho yooj yim mus poob.
Txoj kev sib txuas ntawm cov hlau muag muag zoo ib yam li kev sib txuas ntawm cov xov hlau liab thiab dub. Txoj hauj lwm ntawm cov pob qij txha yog tsis siab, thiab cov duab ntawm cov pins tuaj yeem khoov tau raws li qhov xav tau. Disadvantages: 1. Cov pins yooj yim poob tawm. Tau kawg, kev sib txuas ntawm cov xov hlau liab thiab dub yog qhov ruaj khov. 2. Qhov loj me me ntawm PCB solder pob qij txha ntawm lub teeb qhia phaj tsis yooj yim los tswj, thiab tej zaum yuav muaj cov pob qij txha loj thiab cov pob qij txha me me. Yog hais tias cov pob qij txha loj dhau lawm, nws yuav ua rau cov pob qij txha nraub qaum ntawm lub rooj tsav xwm Circuit Court yuav tsum tau them los ntawm lub teeb lub taub hau zaj duab xis thaum lub sij hawm tsim thiab ua, thiab cov pins backlight tsis tuaj yeem soldered.
Txoj kev sib txuas ntawm cov tshuaj txhuam hniav yog siv tsawg dua. Ob qho kev coj ntawm tus ncej zoo thiab qhov tsis zoo yog tsim ua ke nrog cov PCB me me txuas nrog lub teeb hlaws, thiab lawv raug kho kom tuag, yog li yuav tsis muaj pins poob ntawm ob txoj kev saum toj no. Thiab yog hais tias lub backlight nyob rau ntawm ob sab, qhov sib nrug ntawm tus pins ntawm sab laug thiab sab xis yog qhov tseeb heev. Disadvantages: 1. Vim hais tias tus pin sib nrug ntawm sab laug thiab sab xis yog qhov tseeb heev, ib zaug qhov kev ncua deb ntawm sab laug thiab txoj cai solder pob qij txha ntawm lub rooj tsav xwm Circuit Court yog tsim tsis raug, lub teeb rov qab siv tsis tau; 2. Qhov tsawg kawg nkaus txiav txim kom muaj nuj nqis ntawm qhov teeb pom kev zoo no yuav tsum tau, feem ntau yog tsawg kawg yog 2K yam tsawg kawg nkaus.
Finally, let's talk about the next special method. This kind of backlight does not need to install lamps. Leave the lamp eye position, V groove and lamp beads on the position of the light guide plate head film. Users can use side-emitting SMD lamp beads to stick them on circuit board. The backlight of this method is very cheap. The disadvantage is that it cannot be directly fixed on the circuit board, and it needs to be fixed with double-sided tape behind the backlight.
