Lub luag haujlwm ntawm LCD Backlight Vaj Huam Sib Luag yog dab tsi?

TVs, xov tooj ntawm tes, khoos phis tawj, ntau yam khoom siv ntse, tswj vaj huam sib luag, tag nrho nrog cov ntxaij vab tshaus LCD, txhua tus muaj cov teeb pom kev zoo, cov teeb ci backlight muaj lub luag haujlwm dab tsi?

Lub teeb qhia phaj yog siv cov khoom siv kho qhov muag acrylic / PC ntawv, thiab tom qab ntawd nrog cov kev xav tau siab heev thiab cov khoom siv tsis zoo, hauv qab ntawm cov qib kho qhov muag acrylic phaj nrog UV npo luam ntawv thev naus laus zis luam tawm ntawm cov ntawv qhia teeb pom kev zoo. .

Kev siv cov ntawv kho qhov muag acrylic los nqus lub teeb los ntawm lub teeb kom nyob twj ywm rau ntawm qhov chaw ntawm cov ntawv kho qhov muag acrylic, thaum lub teeb raug txhaj rau txhua qhov taw qhia, lub teeb pom kev yuav kis mus rau txhua lub kaum ntse ntse, thiab tom qab ntawd rhuav tshem qhov kev xav. tej yam kev mob los ntawm pem hauv ntej ntawm lub teeb qhia phaj.

Los ntawm ntau yam sib txawv, sib txawv me me ntawm lub teeb qhia cov ntsiab lus, lub teeb qhia phaj tuaj yeem ua teeb pom kev zoo. Kev siv daim ntawv qhia txog kev cuam tshuam yog los cuam tshuam lub teeb pom kev nyob rau hauv qab rov qab mus rau lub teeb qhia phaj, siv los txhim kho kev ua haujlwm ntawm kev siv lub teeb.

Ua ntej, dab tsi yog zaj duab xis tom qab lub vijtsam LCD hauv lub xov tooj ntawm tes?

Ib zaj duab xis reflective (nyiaj), daim ntawv qhia lub teeb (pob tshab ntawv yas) thiab ob qho tib si optical diffraction zaj duab xis (kom ua kom lub teeb faib ntau dua).

LCD backlight txoj cai rau daim ntawv qhia, lub teeb qhia phaj, sab sauv thiab qis BEF, LED sawb thiab nplaum thav duab hlau thav duab sib sau ua ke, LED sawb them kom cov khoom emits sab pom lub teeb, los ntawm lub teeb qhia phaj tom qab dhau los ua lub dav hlau teeb, muab backlight rau LCD zaub.

Lub xov tooj ntawm tes backlight board nyob rau hauv tus txheej txheem, lub teeb qhia sib dhos FPC pab pawg neeg cov khoom, koj yuav tsum xub rhuav tshem lub teeb nplaum tso tawm daim ntawv, thiab ces cov FPC pab pawg neeg cov khoom pasted nyob rau hauv tus coj txoj hauj lwm ntawm lub teeb qhia (feem ntau teem nrog ib tug zawj. ), los xyuas kom meej tias cov muab tshuaj txhuam kom ruaj, feem ntau kuj yuav tsum tau muab tshuaj txhuam txoj hauj lwm ntawm lub siab mount, yog hais tias lub clamping claw neeg hlau ua hauj lwm nyob rau hauv lub ua ntej kos duab, txhua qhov chaw ua hauj lwm yuav tsum muaj tsawg kawg yog ob, ib tug ntawm lub teeb nplaum tso tawm daim ntawv kua muag tawm, lwm qhov rau tuav FPC pawg khoom. Lwm qhov yog siv los tuav FPC pawg khoom.

Lub backlight yog lub teeb ci tom qab lub iav ntawm lub xov tooj. Tab sis tsis yog tsuas yog hais txog LED, vim hais tias nyob rau theem no ntawm kev teeb pom kev zoo feem ntau yog tsim los ntawm cov nplaum nplaum, cov yeeb yaj kiab zoo, cov lus qhia lub teeb, diffusion, lub teeb qis dua, lub teeb ci ntsa iab, shading adhesive, LED teeb bar.

Thib ob, TV backlight board

Lub backlight board yog siv los xyuas kom meej tias lub teeb ci khoom siv tom qab lub vijtsam LCD emits lub teeb.

Vim hais tias lub LCD ntaus ntawv nws tus kheej yog pob tshab thiab tsis emit lub teeb, yog li lub backlight board yuav tsum tau pab. Qhov ci ntsa iab, sib xws, thiab qee qhov ntsuas ntawm lub teeb pom kev hauv qab muaj qhov cuam tshuam ncaj qha rau kev ua haujlwm ntawm LCD.

Backlight phaj (rov qab lub teeb)), qhov tseeb, yog nyob rau hauv cov txheej txheem ntawm LCD LCD, nyob rau hauv nws rov qab ntxiv fluorescent teeb thiab reflectors ua ke nrog ib tug high-brightness luminous lub cev, vim hais tias lub LCD LCD vaj huam sib luag tsis emit teeb, tsuas yog lub teeb kis tau tus mob. , yog li ntxiv rau lub siab-brightness luminous lub cev hauv qab.

Backlight board txawm hais tias lub tshuab kho qhov muag zoo li yooj yim, tab sis cov yam ntxwv kho qhov muag ntawm txhua qhov sib xyaw, qhov loj thiab qhov txheeb ze ntawm qhov kev ua tau zoo ntawm lub teeb pom kev zoo ntawm lub teeb pom kev zoo tsim ib qho kev sib cuam tshuam, sib cuam tshuam zoo, yog li nyob rau hauv cov kev taw qhia ntawm nyias, kev ua haujlwm siab ntawm tib yam. lub sij hawm, yuav ua li cas yooj yim lub mechanism, txheej txheem simplification thaum tseem txhim kho kho qhov muag kev ua tau zoo, yog ib tug tseem ceeb technical yuam sij rau yav tom ntej kev loj hlob ntawm backlight board.

Qhov thib peb, vim hais tias cov kua siv lead ua kua zaub nws tus kheej yog pob tshab thiab tsis emit lub teeb, yog li lub backlight board yog xav tau los pab lub teeb.

Lub backlight board brightness, uniformity thiab ib co lwm yam indicators, As muaj kev cuam tshuam ncaj qha rau kev ua tau zoo ntawm LCD zaub.

1, cov qauv tsim ntawm cov khoom: hais txog cov qauv zoo, cov qauv ntawm cov neeg siv khoom sib dhos muaj kev cuam tshuam.

Raws li cov qauv tsim ntawm cov khoom muaj feem xyuam rau cov neeg siv khoom module, nws tsis tuaj yeem hloov pauv ntawm qhov xav tau, tshwj tsis yog cov neeg siv khoom module tsis tau tsim, tsuas yog yuav tsum tau tsim tom qab lub backlight board tawm.

2, kev ua tau zoo suav nrog: ci ntsa iab, sib xws, qhov kub thiab txias, kev ua haujlwm kub, cov khoom siv hluav taws xob tam sim no thiab lwm yam kev sim thiab cov kev xav tau kho qhov muag.

Cov tswv yim tam sim no voltage yog txiav txim los ntawm tus qhua module, yog li tus tsim yuav tsum kom meej meej to taub IF thiab Vf qhov tseem ceeb nyob rau hauv thiaj li yuav kam nrog lub brightness.

Brightness hais txog qhov siv ntawm lub teeb rau ib chav tsev ntawm luminescence cheeb tsam, qhov chaw cia kub ntawm -30 degree ~ ntxiv rau 80 degree ; ua haujlwm kub ntawm -20 degree ~ ntxiv rau 70 degree .

Plaub, lub teeb nraub qaum ntawm LED LCD TV qhov tshwm sim tsis zoo.

1, tom qab lub hwj chim ntawm lub teeb rov qab lub teeb uas ploj mus, qee lub tshuab tuaj yeem pom hauv qhov chaw tsaus ntuj tam sim no.

2, lub backlight tsis teeb kiag li. Yog tias lub teeb nyem muaj zog tiv thaiv qhov screen kom ua tib zoo saib, tuaj yeem pom cov cim, LOGO lossis cov duab hauv tsev, feem ntau tuaj yeem txiav txim siab tias lub teeb pom kev tsis ua haujlwm, xws li cov teeb liab tawm tswv yim, lub suab ntawm tus khub feem ntau yog qhov qub.

3, yog tias tsis muaj pov tseg lub teeb bar ntawm tes thiab kev siv ncaj qha luv luv txhawm rau tiv thaiv cov pab pawg teeb pom kev zoo tam sim no, kuj tuaj yeem txuas rau hauv series tam sim no limiting resistor.

Ib qho dav dav 3V teeb hlaws tuaj yeem txuas nrog hauv cov khoom siv hluav taws xob txog li 20 ohms, lub zog 2 - 3W txaus. Yog hais tias lub teeb bar puas ntau dua, nws yog qhov zoo tshaj los hloov nws nrog ib qho tshiab.

4, nco ntsoov tias yog tias hloov cov hlaws teeb tshiab, 3V tuaj yeem hloov 3V, 6V tsuas yog hloov tau 6V, tsis tuaj yeem sib xyaw. Thaum hloov lub teeb bar tshiab, ntev npaum li qhov ntev thiab qhov sib tw voltage.