Raws li tus yam ntxwv ntawm LED high light efficiency, tsawg carbon tiv thaiv kev tiv thaiv thiab txuag hluav taws xob, feem ntau LCD TVs thiab txawb tes ntawm kev ua lag luam tau hloov raws li teeb pom kev zoo. Nyob rau tib lub sij hawm, thiaj li ua tau raws li cov xim siab gamut cov kev pab cuam ntawm LED backlight sources, qhov kev lag luam yog maj qhia plawg cov ntaub ntawv tshiab nrog rau nqaim ib nrab hnub, xws li fluoride phosphors thiab quantum dot phosphors. Yuav kom nkag siab txog cov yam ntxwv ntawm cov phosphor cov ntaub ntawv, peb yuav tsom mus rau kev taw qhia thiab kev piav qhia ntawm cov tshuaj fluoride phosphors thiab lawv daim ntaub ntawv.
Ua ntej tshaj plaws, ua ntej peb nkag siab thiab nkag siab txog cov tshuaj fluoride phosphors, peb yuav qhia ib co kev paub txog cov teeb ci hauv LED hauv kev siv cov ntaub ntawv.
1, LCD kev paub txog kev paub txog
A, LCD lub ntsiab lus
LCD: Ua rau cov kua Crystal Display, lub npe tag nrho ntawm cov kua siv lead ua kua, uas muaj xws li TFT, UFB, TFD, STN thiab lwm hom kua siv lead ua kua.
LCD TV, txawb xov tooj: TV los yog txawb lub xov tooj nrog LCD zaub ua zaub;
B, Kev siv LCD
Kev siv lub tshuab ua Piv txwv li coj los ua ib qho piv txwv, cov qauv tsim muaj xws li lub teeb nrig, lub teeb qhia ntawv, lub phaj siab thiab qis qis, ua kua ua kua, xim lim, ib zaj duab xis transistor, thiab lwm yam. hauv daim duab 1), thiab qhov tseem ceeb ua haujlwm muaj raws li nram no:
1. Tom Qab Teeb: Lub hauv paus ntawm LCD zaub yog thaiv lub teeb thiab lub teeb los ntawm cov kua siv lead ua kom tswj tau lub teeb thiab tsaus. Nws yog ib qho tsim nyog kom muaj lub teeb pom kev hauv daim duab ntawm lub vijtsam, vim li ntawd cov teeb ci ntsa iab yog lub luag haujlwm rau cov khoom siv rau LCD yooj yim. Lub teeb qhov chaw.
2. Cov Ntawv Qhia Teeb Ntawm Lub Teeb: muab lub teeb sib npaug los sib npaug ntawm tag nrho cov npo;
3. Sab Qaum Nres / Yav Qaum Nruab Nrab (Polarizer): Qhov kev taw qhia ntawm lub teeb xa tuaj ntawm lub backlight yog inconsistent thiab radial. Yog hais tias lub teeb pom zoo los ntawm qhov sib tw ntawm cov kua tshuaj pleev xim molecules, peb tseem tsis tuaj yeem pom cov duab uas peb xav pom ntawm qhov screen. Lub sij hawm no, lub thawv polarizing hauv qab no xav txog kev ua haujlwm ntawm normalizing cov kev taw qhia ntawm lub teeb rau cov kua siv lead ua kua.
4. Thin Film Transistor (TFT): Kev tswj ntawm lub kaum ntswg ntawm kua siv lead ua kua molecules
5. Ua kua dej ua kua: Cov txheej txheem ntawm cov kua siv lead ua kua tshuaj yog cov hauv qab tswjhwm ntawm TFT, thiab lub teeb uas muaj qhov kev taw qhia tseem muaj peev xwm ua kom muaj kev kaj siab, thiaj li ci ntsa iab ntawm lub pixel tsev hloov.
6. Xim lim: Tom qab cov lim dej lim tas, peb pom tau tias lub teeb sib txuas rau cov xim ntawm cov lim no, yog li nyob rau hauv cov vijtsam LCD, kev ua haujlwm ntawm cov xim lim yog xim. .
LCD backlight siab xim gamut tso txujci
C, LCD txoj cai qauv
Lub hauv paus ntsiab lus ntawm LCD ntsuam xyuas yog muab cov kua siv lead ua ntawm ob nplooj ntawv ntawm cov yeeb yam iav. Los ntawm kev tswj cov tsav tsheb ntawm cov hluav taws xob ntawm lub nruab nrab ntawm sab saud thiab qis qis thiab cov tshuab hluav taws xob sab nrauv thiab sab nraud, cov nyhuv fais fab ntawm cov kua siv lead ua kua dej yog cov nplaum thiab nematic los tswj cov kev sib txuas ntawm cov teeb ci ntsa iab los yog siv lub taub hau, pabcuam kev ua haujlwm rau cov haujlwm ua kom rov qab tau cov duab.
D, LCD kev taw qhia txog kev lag luam
Txij li cov kua dej ua kom pom tseeb los ntawm lub teeb ci ntxiv, cov nraub qaum feem ntau siv hauv LCD yog CCFL (Txias Cathode Fluorescent Teeb), LED (Lub teeb Emitting Diode), HCFL (Kub Cathode Fluorescent Teeb), Cov teeb ci ntsa VFD Teeb), EL (Cov Ntawv Teev Tseg Electroluminescent), OLED (organic electroluminescent sheet) thiab cov zoo li no. Ntawm lawv, CCFL yog tam sim no feem ntau siv LCD teeb pom kev zoo, feem ntau hu ua tsoos tsho;
CCFL vs. LED:
CCFL - ua los ntawm cov tawv iav thiab trichromatic phosphors. Lub raj muaj cov mercury thiab cov roj ua kom zoo. Sab hauv phab ntsa ntawm lub raj yog coated nrog phosphor thiab muaj ib qho electrode ntawm txhua kawg. Qhov tsis zoo yog tias qhov xim tsuas yog tsawg. .
LED - Ib qho khoom siv hluav taws xob uas siv hluav taws xob ua hluav taws xob uas siv cov khoom siv hluav taws xob uas yog siv cov khoom siv hluav taws xob los ua cov khoom siv hluav taws xob tuaj rau hauv ib lub tshuab hluav taws xob los ntawm cov khoom xa tuaj, ua rau emission liab, daj, xiav, ntsuab, cyan, thiab txiv kab ntxwv. , liab doog, dawb lub teeb. Vim tias cov LEDs muaj cov xim zoo, lawv tau hloov lub teeb ci ntawm cov tsos mob txias cathode fluorescent leeg.
