1) LED Zaub Xim Rov Ua Raws Cai
LED yog lub teeb ci -emitting diode. Nws zoo li lub teeb me me, tab sis nws "filament" yog ua los ntawm cov khoom siv semiconductor. Thaum siv hluav taws xob, cov khoom siv hluav taws xob sab hauv txav thiab sib tsoo nrog lub qhov kom tawm lub teeb. LEDs muaj txiaj ntsig zoo, muaj lub neej ntev, thiab tshwj xeeb tshaj yog lub zog-txuag, yog vim li cas tam sim no lawv muaj nyob txhua qhov chaw.
Ib qho LED zaub yog tsim los ntawm ntau lub LEDs me me, txhua lub teeb liab, ntsuab, thiab xiav.
Xav txog yog tias peb qhib tag nrho peb xim ntawm lub teeb -liab, ntsuab, thiab xiav- thiab kho qhov ci, peb tuaj yeem tsim txhua hom xim, puas yog? Ib yam li cov xim palette, liab, ntsuab, thiab xiav yog peb lub ntsiab xim, thiab lawv tuaj yeem hloov kho los tsim cov xim uas xav tau.
1.2) Kev txheeb xyuas qhov zoo ntawm LED zaub hauv xim Saturation, Brightness, thiab sib piv
Xim Saturation:
Cov xim ntawm LED zaub yog qhov tshwj xeeb vibrant, zoo li zaj sawv. Qhov no yog vim lub teeb liab, ntsuab, thiab xiav lub teeb tawm los ntawm LEDs yog ntshiab heev, ua rau cov xim raug heev.
Brightness:
LED zaub muaj qhov ci ci tshwj xeeb vim tias cov LEDs lawv tus kheej tawm lub teeb, tshem tawm qhov xav tau rau lub teeb pom kev sab nraud. Yog li ntawd, txawm nyob rau hauv ib puag ncig uas ci heev, cov ntsiab lus ntawm cov zaub tuaj yeem pom meej.
Zoo sib xws:
LED zaub muaj qhov tshwj xeeb zoo nkauj dub - thiab - qhov sib txawv dawb, zoo li qhov txawv ntawm hmo ntuj thiab nruab hnub. Qhov no yog vim hais tias LEDs tuaj yeem hloov tau tag nrho, yog li thaum lawv pom cov xim dub, nws yog xim dub tiag tiag, tsis zoo li lwm cov duab uas tshwm sim me ntsis greyish.
2). Colour Reproduction Principles of Traditional Display Technologies
CRT (Cathode Ray Tube):
CRT saib zoo li qub -fashioned TV teeb. Nws muaj ib rab phom hluav taws xob uas tua hluav taws xob hluav taws xob. Lub beam no deflected los ntawm ib tug magnetic teb thiab ntaus lub phosphor screen, ua rau nws emit lub teeb.
Lub vijtsam phosphor muaj peb xim phosphor: liab, ntsuab, thiab xiav. Thaum lub teeb hluav taws xob tawm tsam cov phosphor, nws emits cov xim sib xws ntawm lub teeb, yog li nthuav tawm ntau xim. Txawm li cas los xij, CRT saib tam sim no tsis tshua pom vim tias lawv loj dhau, siv zog ntau dhau, thiab muaj lub neej luv luv.
LCD (Kua Crystal Display):
Ib qho screen LCD zoo li lub qhov rais tej yam yees siv. Sab hauv, muaj ib txheej ntawm cov kua siv lead ua kua. Nyob rau hauv lub zog ntawm lub teb hluav taws xob, cov kua siv lead ua kua molecules hloov lawv cov kev sib raug zoo, yog li tswj cov kis ntawm lub teeb.
Txawm li cas los xij, kua siv lead ua nws tus kheej tsis tawm lub teeb, yog li xav tau ib txheej backlight los muab lub teeb ci. Lub backlight txheej zoo li lub teeb me me.
Nws emits lub teeb dawb, uas yog hloov mus rau hauv liab, ntsuab, thiab xiav lub teeb los ntawm cov xim lim. Tom qab ntawd, los ntawm kev hloov pauv hauv kev npaj ntawm cov kua siv lead ua kua molecules, ntau yam xim tuaj yeem pom.
2.1). Sib piv qhov sib txawv ntawm cov xim ua haujlwm ntawm cov thev naus laus zis no thiab cov duab LED
Xim Saturation:
Cov xim ntawm LED zaub zoo li vibrant zoo li ib qho khoom qab zib zaj sawv, thaum cov xim ntawm LCD zaub zoo li ntxuav - tawm cov khoom qab zib zaj sawv, me ntsis faded. Qhov no yog vim hais tias lub teeb emissions los ntawm LED teeb yog purer, uas ua rau kom raug ntau xim hloov.
Brightness:
LED zaub zoo li lub hnub me me, ci heev, thaum lub LCD zaub zoo li lub rooj teeb me me, tsis kaj li. Qhov no yog vim hais tias LED teeb emit teeb lawv tus kheej thiab tsis tas yuav tsum tau lub teeb pom kev sab nraud, ua rau lawv ci dua.
Kev sib piv:
Cov xim dub-thiab- qhov sib piv dawb ntawm LED zaub yog qhov tseeb raws li qhov sib txawv nruab hnub thiab hmo ntuj; thaum nyob rau hauv ib qho LCD zaub, qhov sib piv yog tsawg pronounced, zoo li nyob rau hauv ib tug huab hnub. Qhov no yog vim tias LED teeb tuaj yeem raug tua tag nrho, yog li thaum lawv pom cov xim dub, nws yog xim dub tiag tiag.
Feem ntau, cov lus qhia LED yog qhov zoo tshaj rau cov khoom siv thev naus laus zis hauv cov ntsiab lus ntawm cov xim saturation, brightness, thiab sib piv. Yog li ntawd, tam sim no peb tuaj yeem pom cov duab LED hauv ntau qhov chaw, xws li cov ntawv tshaj tawm, cov chaw ua yeeb yam, thiab chaw ntau pob.
