1, Cov Khoom Siv Hluav Taws Xob Ua Kua: Dual Test ntawm Thermal Stability thiab Fais Fab Kev kam rau siab
Lub hauv paus ntsiab lus ntawm LCD tso siab rau cov yam ntxwv deflection ntawm cov kua siv lead ua kua molecules nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb. Cov ntaub ntawv siv lead ua kua lawv tus kheej muaj thermal rhiab heev, thiab kev ruaj ntseg ntawm lawv cov qauv molecular cuam tshuam los ntawm qhov kub thiab txias. Thaum lub LCD nyob rau hauv lub hwj chim lub sij hawm ntev, lub tshav kub generated los ntawm lub backlight module yuav raug xa mus rau cov kua siv lead ua txheej los ntawm cov thermal conductive khoom, ua rau lub zos kub nce. Yog tias qhov kub siab tshaj qhov hloov pauv theem pib ntawm cov ntaub ntawv siv lead ua kua (feem ntau -20℃mus rau 70 degree), cov kua siv lead ua kua molecules yuav hloov los ntawm cov kua mus rau cov khoom los yog roj, ua rau muaj teeb meem hauv qab no:
Lub sijhawm teb txuas ntxiv: Lub deflection ceev ntawm cov kua siv lead ua kua molecules txo qis, ua rau cov duab dynamic ghosting;
Kev txo qis: Qhov teeb meem ntawm cov kua siv lead ua kua ua rau lub teeb tsis sib xws thiab greying ntawm daim duab;
Cov duab seem tshwm sim: Thaum cov duab zoo li qub tau tshwm sim rau lub sijhawm ntev, cov kua siv lead ua kua molecules ua rau qaug zog vim tsis tu ncua deflection, thiab cov qauv duab qub tseem khaws cia tom qab hloov daim duab.
Kev them nyiaj yug Case: Ib lub chaw kuaj xyuas LCD uas tau ua haujlwm tsis tu ncua rau 96 teev thiab pom tias nws lub sijhawm teb tau txuas ntxiv los ntawm 5ms mus rau 12ms, qhov sib piv tau txo qis los ntawm 30%, thiab txawm tias thaum hloov mus rau cov xim xim tom qab tom qab tso tawm cov qauv checkerboard, cov seem seem checkerboard duab ntxoov ntxoo tseem tuaj yeem pom.
2, Backlight system: irreversible poob ntawm LED lifespan thiab lub teeb lwj
LCD nws tus kheej tsis tawm lub teeb, thiab nws cov txiaj ntsig tso rau ntawm cov teeb pom kev zoo (xws li CCFL lossis LED) los muab lub teeb ci. Kev laus ntawm lub teeb pom kev zoo yog qhov kev xav tau tshaj plaws ntawm LCD tom qab lub sijhawm ntev - lub hwj chim rau, tshwj xeeb tshaj yog manifested li:
Brightness attenuation: Lub neej ntev ntawm LED backlight hlaws feem ntau yog 30000 txog 50000 teev, tab sis ntev -lub sij hawm ua haujlwm siab ci tuaj yeem ua kom lub teeb attenuation. Piv txwv li, tom qab khiav tsis tu ncua ntawm 100% ci ntsa iab rau 10000 teev, qhov ci ntsa iab tuaj yeem txo mus rau 70% ntawm tus nqi pib;
Xim kub hloov pauv: LEDs nrog cov wavelengths sib txawv muaj qhov sib txawv attenuation, uas yuav ua rau cov duab tig daj lossis xiav tom qab siv ntev -;
Kev txo qis tsis sib xws: Daim ntawv qhia lub teeb lossis cov yeeb yaj kiab diffusion hauv lub teeb pom kev zoo tuaj yeem tsim cov chaw ci hauv zos lossis qhov tsaus ntuj vim qhov sib txawv ntawm thermal expansion coefficients.
Cov ntaub ntawv txhawb nqa: Tom qab ua haujlwm tsis tu ncua sab nraum zoov rau 2 xyoos, qhov ci ntsa iab ntawm qee lub npe ntawm LCD advertising tshuab txo qis los ntawm thawj 2000nits mus rau 1400nits, xim kub hloov ntawm 6500K txog 5800K, thiab cov duab tsis sib xws kev ua yuam kev nthuav dav ntawm ± 5% mus rau ± 15%.
3, Environmental yam: synergistic nyhuv ntawm kub, av noo, thiab mechanical stress
LCDs uas tau siv rau lub sijhawm ntev feem ntau yog nyob rau hauv qhov chaw ruaj khov, thiab lawv cov kev laus raug cuam tshuam los ntawm cov hauv qab no:
Kub: Kub kub tuaj yeem ua kom cov khoom tawg ntawm cov khoom siv lead ua kua, qhov lwj ntawm cov hlaws rov qab, thiab oxidation ntawm cov khoom siv hluav taws xob. Piv txwv li, ib qho LCD uas ua haujlwm tsis tu ncua ntawm 40℃muaj ob zaug ntawm kev laus li ntawm 25 degree;
Humidity: Qhov chaw ntub dej yuav ua rau hydrolysis ntawm cov nplaum txheej ntawm cov kua siv lead ua kua thiab cov polarizer, ua rau delamination lossis npuas. Tom qab ua haujlwm nyob rau hauv ib puag ncig nrog cov av noo ntawm 80% rau 6 lub hlis, ib qho kev lag luam tswj vaj huam sib luag tau ntsib ntau delamination;
Mechanical stress: LCDs uas tau teeb tsa rau lub sijhawm ntev tuaj yeem ua rau me ntsis deformation vim cov cuab yeej vibration lossis thermal expansion thiab contraction, ua rau misalignment ntawm cov kua siv lead ua kua molecules. Piv txwv li, tom qab khiav hauv ib puag ncig kev vibration tsis tu ncua rau ib xyoos, lub LCD ntawm drone chaw taws teeb tswj qhia ntau yam tsis zoo pixels.
4, Kev siv tus cwj pwm: optimization ntawm brightness, cov ntsiab lus, thiab kev pw tsaug zog zoo
Tus neeg siv tus cwj pwm siv tau muaj kev txiav txim siab ntawm kev laus ntawm LCD. Cov cwj pwm hauv qab no ua rau kom muaj kev laus:
Kev ua haujlwm siab ci ntsa iab: Rau txhua 10% nce hauv qhov ci, lub zog siv ntawm cov hlaws rov qab nce li ntawm 20%, thiab lub teeb tawg nrawm nrawm los ntawm 30%. Nws raug pom zoo tias qhov ci ntsa iab rau kev siv txhua hnub yuav tsum tsis txhob ntau tshaj 60%, thiab nws tuaj yeem nce mus ib ntus rau kev ua si lossis zaj duab xis scenes;
Cov duab zoo li qub: Cov duab ntev ntev ntawm tib daim duab (xws li cov ntsiab lus ruaj khov ntawm cov ntxaij vab tshaus los yog cov tshuab tshaj tawm) tuaj yeem ua rau qaug zog ntawm cov kua siv lead ua kua molecules, uas ua rau cov duab mus tas li. Qhia hloov cov ntxaij vab tshaus los yog ua kom cov tshuaj ntsuam xyuas txhua 2 teev;
Tsis muaj kev pw tsaug zog: LCDs uas ua haujlwm tsis tu ncua rau ntau tshaj 72 teev muaj peb zaug ntawm qhov tsis ua haujlwm ntawm cov khoom siv hluav taws xob (xws li tsav ICs thiab capacitors) piv rau cov khoom siv uas khiav tsis tu ncua. Nws raug nquahu kom teeb tsa hom pw tsaug zog tsis siv neeg (xws li tua lub saib tom qab 20 feeb ntawm kev tsis ua haujlwm los ntawm lub neej ntawd ntawm Windows systems).
Kev sim sib piv: Ob txheej ntawm LCDs ntawm tib tus qauv, ib lub teeb khiav ntawm 50% ci ntsa iab, hloov cov ntxaij vab tshaus txhua 2 teev, thiab ua kom tsis siv neeg pw tsaug zog rau 1 xyoo; Lwm pab pawg ua haujlwm tsis tu ncua rau ib xyoos nrog 100% ci ntsa iab, kho cov duab zoo li qub, thiab ua haujlwm 24-teev. Cov txiaj ntsig tau pom tias yav dhau los muaj qhov ci ntsa iab ntawm 8% thiab tsis muaj cov duab seem; Qhov ci ntsa iab tom kawg tau txo qis los ntawm 35%, ua rau 5 cov duab seem, thiab qhov tsis ua haujlwm ntawm lub rooj tsavxwm yog siab li 40%.
5, Kev tawm tswv yim rau kev ncua kev laus
Kev tswj qhov kub thiab txias: xyuas kom meej tias qhov ntsuas kub ntawm lub LCD yog nyob nruab nrab ntawm 20℃thiab 30 degree, tsis txhob tshav ntuj ncaj qha lossis ze rau qhov chaw sov;
Kev tswj cov av noo: Siv cov dehumidifiers lossis desiccants los tswj cov av noo ib puag ncig ntawm 40% thiab 60% RH;
Kev kho qhov ci ntsa iab: Qhov ci ci yuav tsum tsis pub tshaj 60% rau kev siv txhua hnub, thiab tuaj yeem nce ib ntus mus rau 80% rau kev ua si lossis kev ua yeeb yaj kiab;
Kev sib hloov cov ntsiab lus: Tsis txhob tso saib cov duab zoo li qub rau lub sijhawm ntev, ua kom lub ntsej muag zoo nkauj lossis lub sijhawm hloov cov ntsiab lus;
Kev saib xyuas tsis tu ncua: ntxuav cov plua plav ntawm qhov screen nrog cov ntaub mos muag txhua 3 lub hlis, tsis txhob siv cawv lossis tshuaj kuab tshuaj;
Kev saib xyuas kev tshaj lij: Yog tias muaj qhov ci tsis sib xws, cov duab seem lossis cov pixels tsis zoo, hu rau lub chaw tsim khoom raws sijhawm los hloov lub teeb pom kev zoo lossis LCD vaj huam sib luag.
