LED backlight technology-RINA TECH

LED yog tsim los ntawm kev hloov CCFL txias cathode fluorescent leeg nrog lub teeb ci ua lub teeb pom kev zoo kom ua tiav cov teeb pom kev zoo dua. Txawm li cas los xij, LED backlighting tau hloov zuj zus txij thaum ntawd los, yog li nws siv rau peb qhov tseem ceeb, uas muaj cov teebmeem zaub txawv.

• a. Ncaj nraim hauv LED backlight.

Lub ntsiab tseem ceeb yog tias lub teeb vaj huam sib luag yog them nrog LEDsfor teeb pom kev zoo. Cov cwj pwm los ntawm cov duab zoo nkauj, lub teeb nrig rov qab tuaj yeem tsim nyob hauv thaj chaw, uas yog," kev tswj hwm hauv cheeb tsam ntawm lub teeb" thev naus laus zis, kom ua tiav cov tib neeg ua rau cov xim sib txawv. Txawm li cas los xij, qhov kev siv tshuab hluav taws xob rov qab no yuav cuam tshuam rau lub TVs tuab, yog li qee lub TV ultra-nyias ua qhov muag taw tes rau lwm qhov kev siv thev naus laus zis.

Raws li qhia hauv daim duab (a), ncaj ncaj hom backlighting cov txheej txheem yog yooj yim, tsis muaj lub teeb qhia qhia phaj, LED array tso rau hauv qab ntawm lub teeb lub teeb, lub teeb tawm ntawm LED dhau los ntawm sab hauv qab thiab sab ntawm sab nraud, thiab tom qab ntawd dhau ntawm lub diffusion phaj thiab kho qhov muag module uniformly tawm. Qhov tuab ntawm lub teeb taws rov qab yog txiav txim siab los ntawm qhov kev ncua deb ntawm qhov hauv qab ntawm lub thawv teeb thiab lub phaj tawg, feem ntau yog cov tuab tuab tuab, qhov zoo dua lub teeb uniformity ntawm backlight. Lub hom ntawm LED teeb teb faib ua lub luag haujlwm tseem ceeb hauv cov xim thiab lub teeb ci tsis sib thooj ntawm lub teeb nrig rov qab, LED teeb siv nyob rau hauv lub teeb rov qab feem ntau muaj Lambert hom thiab sab emission ob hom, vim tias sab emission hom LED yog ntau yam zoo rau lub teeb uniformity ntawm backlighting, ncaj qha hom backlighting feem ntau siv sab emission hom LED. Txawm li cas los xij, lub kaum ntse ntse loj sab emission LED vim nws lub teeb siv qis hauv nruab nrab, yooj yim ua rau cov xim tsaus nti, cuam tshuam rau kev sib sau ntawm lub teeb rov qab.

• b. Sab nkag hom LED backlight.

Nws yooj yim heev kom nkag siab hais tias sab nkagLEDbacklighting yog lub teeb pom kev zoo ntawm LCD vaj huam sib luag los ntawm kev teeb tsa cov qij LED nyob ib ncig ntawm lub vaj huam sib luag thiab ci rau lawv rau hauv kev qhia teeb. Vim tias muaj tsawg dua qhov muag teev, yog li ntawd cov lag luam TV yuav khiav TV lub cev tsim cov duab thinner thiab lub teeb, cov xov hluav taws xob ultra-thin TVs ntawm lub lag luam yog siv cov thev naus laus zis no. Txawm li cas los xij, vim muaj qee qhov muaj qhov tsis xws luag, tsis tuaj yeem ua tiav kev tswj hwm ntawm lub teeb, kev ua yeeb yam xim tsis zoo li hom ncaj qha.

Raws li muaj nyob hauv daim duab (b), sab teeb hom backlight module yuav yog qhov taw tes lub teeb ci teeb tsa hauv qhov tsim tshwj xeeb ntawm lub teeb coj qhia cov phaj sab ua qhov chaw taws teeb, siv cov LEDs tsawg dua; thiab vim tias qhov chaw taws teeb tau tso rau ntawm ib sab ntawm lub teeb qhia qhia, LED los ntawm tus xov tooj thiab qhov kev txwv tsis pub dhau, tseem yuav tsum tau tawg lub teeb kom sib xws thoob plaws lub dav hlau, yuav tsim thaum lub vaj huam sib luag cheeb tsam loj dua, kev siv ntau tsawg lub teeb ci ci. Vim tias cov LED teeb rov qab nyob rau sab ntawm cov khoom, yog li ntawd sab nraum qab tsuas yog xav tau ntxiv cov lus qhia teeb pom kev tuaj yeem yog cov tsos ntawm cov tuab ntawm cov khoom siv ua kua siv hluav taws xob tuaj yeem ua nyias, xws li Sony' s ZX1 series, nws yog kev siv ntawm sidelight hom backlight module.

• c. Quantum dot tshuab.

Tsis ntev los no nrov heev" quantum dot TV", qhov tseeb, kuj yog ib hom tshiab ntawm cov tshuab backlight. Nws yog tus cwj pwm los ntawm kev siv cov khoom siv ntawm nano-crystalline es tsis txhob siv cov teeb ci LED, kom ua tiav purer, qhov tseeb ntxiv kev ua dua tshiab ntawm cov xim backlight, cov xim muaj txiaj ntsig ntawm LCD TV los txhim kho qib kev sib piv ntawm OLED. Yog li, kev siv cov quantum dot tshuab LCD TVs, tab sis kuj zoo tshaj plaws cov nyhuv zaub hauv khw, cov nqi ntau tshaj plaws.

Quantum dot technology yog txoj hauv kev tshiab los txhim kho cov xim gamut. Quantum dots yog muaj li ntawm zinc, cadmium, selenium, thiab sulfur atoms thiab yog nanomaterials nrog crystal diameters ntawm 2 thiab 10 nanometers. Vim nws cov cim optoelectronic, nws emits ntshiab heev, zoo monochromatic lub teeb ntawm ntau xim thaum tsa los ntawm optoelectronic stimuli, nyob ntawm seb lub cheeb ntawm cov quantum dots. Raws li cov cuab yeej no, yog tias cov khoom siv quantum dot siv nyob rau hauv lub teeb rov qab ntawm lub TV, irradiation nrog xiav LED tuaj yeem tawm ntawm lub teeb pom kev tag nrho, yog li txiav kho lub teeb nrig rov qab, yog li txhim kho qhov xim gamut kev ua tau zoo thiab ua cov xim ntxiv pom tseeb.

Raws li pom hauv daim duab (c), nws tuaj yeem pom tias quantum dot tshuab kuj tseem xav tau xiav LED kev zam, txuas ntxiv ua pov thawj qhov tseem ceeb ntawm kev tsim muaj xiav LED. Quantum dot backlighting tsis yog qhov nyuaj, cov quantum dots tau tsim rau hauv zaj duab xis nyias thiab muab tso nruab nrab ntawm xiav LED thiab LCD vaj huam sib luag, uas tuaj yeem txhim kho xim gamut ntawm LCD vaj huam sib luag. Cov quantum dot lawv tus kheej yog qhov me me hauv qhov loj me, yog li cov tuab ntawm zaj duab xis quantum dot kuj tseem tuaj yeem tswj tau yam tsis muaj cov khoom tuab ntawm LCD ntau.