ʻO ka ʻokoʻa nui loa ma waena o ke aniani wai a me ka plasma ʻo ia ka wai aniani e hilinaʻi i ke kumu kukui passive, ʻoiai ʻo ka TV plasma no nā mea hōʻike luminescence ikaika. CCFL(cold cathode fluorescent lamp).ʻO ke ʻano o ka LCD he Liquid Crystal i waiho ʻia ma waena o nā ʻāpana aniani ʻelua.He nui nā uwea kūhelu liʻiliʻi a ākea ma waena o nā ʻāpana aniani ʻelua.
ʻAʻole hiki ke hoʻokuʻu i ke kukui Liquid ponoʻī, hiki ke hana i nā loli kala, pono i kahi backlight e ʻike i nā mea o ka hōʻike. ʻO ia ka mea e hoʻohana ai i nā diodes māmā (leds), ʻo ia. ʻO ke kukui keʻokeʻo ke kumu kumu kukui, ʻo ka pahu CCFL kahi kumu māmā. 'Oi aku ma mua o kekahi mau watts, pono 'oe e no'ono'o i ke kaapuni kaapuni kūpono e ho'omaika'i ai i ka pono. ʻO CCFL (Cold Cathode Fluorescent Lamp) a i kapa ʻia ʻo CCFT (Cold Cathode Fluorescent Tube).
CCFL (cold cathode fluorescent lamp) backlight ʻo ia ka huahana backlight nui o LCD TV. Ke hana nei ia i ka wā e hoʻokuʻu ai ka uila kiʻekiʻe ma nā ʻaoʻao ʻelua o ka paipu, paipu i loko o kahi hopena uila kiʻekiʻe ma hope o ka hana ʻana o ka electrode i ka lua o ka electron emission, hoʻomaka e hoʻokuʻu, ka paipu o mercury a inert kinoea uila ma hope o ka hopena, ka excitation radiation 253.7 nm ultraviolet kukui, ultraviolet excitation o tu na phosphors ma ka paipu paia a hana ike ike kukui. I kēia manawa, hiki i ke ola nominal o LCD TV backlight hiki i 60,000 hola. CCFL backlight ua hōʻike ʻia e ke kumu kūʻai haʻahaʻa, akā ʻo ka hana kala. ʻAʻole maikaʻi e like me ke kukui LED.
LED backlight USES LED e like me backlight kumu, ka mea o ka loa olelo hoopomaikai 'enehana e pani i ka kuʻuna anu cathode fluorescent paipu i loko o ka future.Leds ua hana 'ia me ka lahilahi papa o doped semiconductor mea, kekahi me ka oi o electrons, a me ka kekahi me ka ole o lakou. ka hana ʻana i nā lua i hoʻopiʻi maikaʻi ʻia ma kahi e hui ai nā electrons a me nā lua e like me ka hala ʻana o ka uila, e hoʻokuʻu ana i ka ikehu keu ma ke ʻano o ka radiation māmā. Hiki ke loaʻa nā LED me nā ʻano luminescence like ʻole ma ka hoʻohana ʻana i nā mea semiconductor like ʻole. ,'ōmaʻomaʻo,ʻalani, amber a me ke keʻokeʻo.ʻO ke kelepona paʻa ka hoʻohana nuiʻana i ke kukui LED keʻokeʻo, aʻo ka LED backlight i hoʻohanaʻia ma LCD TV hiki ke keʻokeʻo,ʻulaʻula,'ōmaʻomaʻo a me ka uliuli.I nā huahana kiʻekiʻe, hiki ke hoʻohana ʻia nā kukui LED he nui no ka hoʻomaikaʻi hou ʻana i ka hōʻike kala, e like me ʻeono mau kala kumu LED backlight. ʻO ka pōmaikaʻi o ka LED backlighting ʻo ia ka lahilahi o ka mānoanoa, ma kahi o 5 cm, a me ka gamut kala. ākea loa, hiki ke hiki i ka 105% o ka gamut kala NTSC.Hiki ke ho'emi 'ia ka luminous flux o ka 'ele'ele i ka 0.05 lumens, e hana ana i ka ratio like 'ole o ka LCD TV e like me 10,000: 1. I ka manawa like, he 100,000 mau hola o ke ola o ka LED backlight. ʻO ka hoʻomohala ʻana o ka LED backlight ke kumu kūʻai, no ka mea, ʻoi aku ka kiʻekiʻe o ke kumukūʻai ma mua o ke kumu kukui o ke kukui fluorescent anu, hiki ke ʻike ʻia ke kumu backlight LED ma nā TV LCD kiʻekiʻe ma waho.
Nā pōmaikaʻi o ke kumu kukui kukui LED
1. Hiki ke hana lahilahi ka pale.Inā mākou e nānā i kekahi LCDS, hiki iā mākou ke ʻike aia kekahi mau filament CCFL paipu i hoʻonohonoho ʻia. ʻO ka backlighting, ma ka ʻaoʻao ʻē aʻe, he mea hoʻoheheʻe kukui pālahalaha, ʻaʻole koi i nā mea hana hou.
2. ʻOi aku ka maikaʻi o ke kiʻi ʻoi aku ka maikaʻi o ke kiʻi CCFL backlit pale maʻamau he ʻokoʻa ka ʻōlinolino ma waena a puni, a ʻo kekahi keʻokeʻo ke ʻeleʻele loa ka pale.
ʻO nā kukui uila CCFL, e like me nā kukui fluorescent, ka makahiki ma mua o ka manawa, no laila e huli melemele a ʻeleʻele nā pale pona kahiko ma hope o ʻelua a ʻekolu mau makahiki, ʻoiai e lōʻihi ka lōʻihi o nā pale backlit LED, ʻelua a ʻekolu paha manawa.
ʻIke mākou a pau e pono nā kukui fluorescent i ka uila kiʻekiʻe e hoʻopaʻa i ka mahu mercury, no laila ka nui o ka hoʻohana ʻana i ka mana o ka pale CCFL, ma ke ʻano he 14 iniha o ka hoʻohana ʻana i ka mana ma mua o 20 watts. ʻO nā leds he semiconductor e hana ana i ka haʻahaʻa haʻahaʻa, maʻalahi i ka hoʻolālā. a hoʻopau i ka mana liʻiliʻi, e hana maikaʻi loa iā lākou no ke ola pākaukau laptop.
5. ʻOi aku ka maikaʻi o ke kaiapuni i ka mercury i nā kukui CCFL e hoʻohaumia nui i ke kaiapuni, a he mea paʻakikī loa ka hana hou ʻana me ka ʻole.
ʻO ke kumu hana o ke kukui fluorescent cathode anuanu CCFL
ʻO ke kinona o ka CCFL anu cathode fluorescent kukui ʻo ia ke kinoea inert Ne + Ar hui pū ʻia me ka trace mercury vapor (mg) i hoʻopaʻa ʻia i loko o ke aniani paipu a ua uhi ʻia ka mea fluorescent ma ka paia o loko o ke aniani. CCFL cold cathode fluorescent tubes E hoʻokuʻu i ka mālamalama ma ka hahau ʻana i ka pauka fluorescent ma ka paia me ke kukui ultraviolet e hoʻohauʻoli ʻia e ke kinoea mercury ma o nā electrodes ma nā kihi ʻelua o ka paipu.
Ka hemahema o ke kukui fluorescent cathode anuanu CCFL
ʻO ke kumu kukui CCFL e hoʻohana pinepine ʻia ai ka TV kristal wai i kēia manawa, ʻaʻohe mea e nānā mai ka hāʻawi ʻana i ke kumu kukui a i ʻole mai ke ʻano kino, e nānā me ka paipu o ke ao a mākou e hoʻohana ai i kēlā me kēia lā kokoke loa. piʻi ka haʻahaʻa haʻahaʻa ma luna o ka ʻili o ka paipu, kiʻekiʻe ka ʻōlinolino ma luna o ka ʻili o ka paipu a me ka hana maʻalahi i nā ʻano like ʻole. 80%.No nā pale TV nui nui, paʻakikī ka uila CCFL a me ka hana paipu lōʻihi.
ʻO ka mea mua, ʻo ka maʻi poʻo nui loa ka pōkole o ke ola. , E pōʻeleʻele ka pale LCD, melemele, ʻo ia ke ola pōkole o nā hemahema CCFL i hana ʻia e.
ʻO ka lua, e kaupalena i ka pāʻani kala LCD. ʻO kēlā me kēia pika i ka LCD i haku ʻia me R, G a me B mau ʻāpana kala rectangular, a ʻo ka hana kala o ka LCD e hilinaʻi loa i ka hana o ka module backlight a me ke kiʻi kānana kala. ʻO nā waihoʻoluʻu o ke kiʻi kānana e like me ke kukui keʻokeʻo i hoʻokuʻu ʻia e CCFL (ka haku o nā kala kumu ʻekolu), akā ʻaʻole hiki i ka CCFL backlight module ke hoʻokō maoli i nā koi hoʻolālā, aia wale nō ma kahi o 70% o ka maʻamau NTSC.
ʻO ke kolu, paʻakikī ka hoʻolālā a ʻaʻole maikaʻi ka like ʻana o ka puka aniani. e like me ka pā diffuser, ka pā alakaʻi māmā a me ka pā reflector.
ʻO ka hā, ka leo nui, ʻaʻole kūpono ka mana. ʻaʻole ʻoluʻolu, no ka mea, koi ʻo 14-inch LCDS i 20W a ʻoi aku paha ka mana.
ʻOiaʻiʻo, i nā makahiki ʻelua i hala aku nei nā mea hana hale a me nā ʻāina ʻē i ka nānā ʻana i nā hemahema o ka CCFL kuʻuna i hana i kekahi mau hoʻomaikaʻi, me he mea lā ua hiki i kahi kiʻekiʻe kiʻekiʻe loa, ua ʻōlelo ʻia nā mea hoʻolaha hoʻolaha i ke kilokilo, akā ua kaupalena ʻia kēia mau hoʻomaikaʻi ʻana, ʻaʻole hiki ke hoʻopau loa. ka CCFL backlight congenital technical defects.
I kēia manawa, ʻo ka backlight ka nui o ka CCFL tube, ʻoi aku ka liʻiliʻi o ke kumukūʻai, ʻoi aku ka nui o ka ʻenehana. ʻO ka backlighting LED i kaupalena ʻia i nā huahana pale liʻiliʻi e like me ke kelepona paʻa, MP3, MP4, etc. No nā huahana pale nui, ʻo ia. he kuhikuhi no na hooikaika ana.Eia nō naʻe, ʻoi aku ka mālama ʻana i ka ikehu, ʻo ia kona pono
Ka manawa hoʻouna: Jun-29-2019