Kuwulula ma Enigmatic World of Chip-on-Board (COB) ma LCD

Pachiyambi chake, COB LCD imadziwika ndi kulumikizidwa mwachindunji kwa tchipisi chimodzi kapena zingapo zophatikizika (IC) - nthawi zambiri woyendetsa - pagawo lagalasi la gulu la LCD. Kumangirira kwachindunji kumeneku kumatheka kudzera munjira yotchedwa wire bonding, momwe mawaya ochepa kwambiri agolide kapena aluminiyamu amalumikiza mosamalitsa mapepala a silicon kufa ndi zotengera zofananira pagalasi. Pambuyo pake, chotchinga choteteza, chomwe nthawi zambiri chimakhala ndi utomoni wa epoxy, chimagwiritsidwa ntchito kuteteza chip ndi ma waya osalimba kuzinthu zosokoneza zachilengedwe monga chinyezi komanso kukhudzidwa kwathupi. Kuphatikiza uku kwa ma driver circuitry molunjika pagalasi kumapangitsa kuti pakhale mawonekedwe owoneka bwino komanso olimba poyerekeza ndi njira zina zochitira msonkhano.

Zotsatira za paradigm yomangayi ndizochuluka. Ubwino umodzi wodziwika bwino waukadaulo wa COB ndikuchita bwino kwa malo. Pochotsa kufunikira kwa bolodi yosindikizidwa yosiyana (PCB) kuti ikhazikitse ma driver IC, ma COB modules amawonetsa kutsika kwambiri. Kuphatikizika kumeneku kumakhala kopindulitsa makamaka pamapulogalamu omwe malo amakhala okwera mtengo, monga ukadaulo wovala, zida zogwirira m'manja, ndi zowonera zina zamagalimoto. Kuphatikiza apo, njira zazifupi zamagetsi pakati pa chip chip ndi gulu la LCD zimathandizira kukulitsa kukhulupirika kwa ma siginecha ndikuchepetsa kusokoneza kwamagetsi (EMI). Kuwongolera kwamagetsi kumeneku kumatha kumasulira kukhala mawonekedwe okhazikika komanso odalirika, makamaka m'malo ovuta kwambiri amagetsi.

Mkhalidwe wina wokakamiza wa COB LCDs uli pakulimba kwawo komanso kulimba mtima kwawo pakugwedezeka kwamakina ndi kugwedezeka. Kumangika kwachindunji kwa chip ku gawo lapansi lagalasi, kuphatikiza ndi encapsulation yoteteza, kumapereka msonkhano wamawonekedwe omveka bwino poyerekeza ndi njira zomwe zimadalira kulumikizana kogulitsidwa ku PCB yosiyana. Kuvuta kwachilengedweku kumapangitsa COB LCDs kukhala chisankho chokondedwa pamapulogalamu omwe amakumana ndi zovuta zogwirira ntchito, monga mapanelo owongolera mafakitale ndi zikwangwani zakunja. Kuphatikiza apo, mawonekedwe amafuta a COB amatha kukhala opindulitsa muzochitika zina. Kulumikizana kwachindunji pakati pa chip ndi gawo lapansi lagalasi kumatha kuwongolera kutentha, ngakhale izi zimadalira kwambiri kapangidwe kake ndi zida zomwe zimagwiritsidwa ntchito.

Komabe, monga njira iliyonse yaukadaulo, ma COB LCD amaperekanso malingaliro ena. Kuphatikizika kwa chip mwachindunji kumafuna zida zapadera zopangira ndi ukatswiri, zomwe zitha kupangitsa kuti pakhale zokwera mtengo zoyambira poyambira poyerekeza ndi njira zina zolumikizira. Kuphatikiza apo, kukonzanso kapena kusintha chip cholakwika mu COB module kumatha kukhala chinthu chovuta komanso chosatheka. Kuperewera kwa kukonzanso uku kumatha kukhala chinthu chofunikira pamapulogalamu omwe ali ndi zofunikira zokhazikika. Kuonjezera apo, kusinthasintha kwa mapangidwe a COB modules kungakhale kovuta poyerekeza ndi njira zomwe zimagwiritsa ntchito ma PCB osiyana, kumene kusintha ndi kusintha kwa zigawo zingathe kukhazikitsidwa mosavuta.

Kuti mumvetse bwino za kukula kwa ma module a LCD, ndikofunikira kulingalira matekinoloje okhudzana,makamaka Chip-on-Glass (COG). Funso "Kodi pali kusiyana kotani pakati pa COB ndi COG?" zimachitika pafupipafupi pazokambirana zokhudzana ndi kupanga ma module. Ngakhale onse a COB ndi COG amaphatikiza kulumikizidwa mwachindunji kwa ma driver IC kugawo lagalasi, njira yomwe imagwiritsidwa ntchito imasiyana kwambiri. Muukadaulo wa COG, dalaivala wa IC amalumikizidwa mwachindunji kugalasi pogwiritsa ntchito anisotropic conductive film (ACF). ACF iyi ili ndi tinthu tating'onoting'ono tomwe timakhazikitsa kulumikizana kwamagetsi pakati pa mapepala pa chip ndi mapepala ofananira pagalasi, pomwe amapereka kutchinjiriza kwamagetsi mu ndege yopingasa. Mosiyana ndi COB, COG sigwiritsa ntchito ma waya.

Zotsatira za kusiyana kofunikiraku muukadaulo wolumikizana ndizokulirapo. Ma module a COG nthawi zambiri amawonetsa mawonekedwe ang'onoang'ono komanso opepuka poyerekeza ndi anzawo a COB, chifukwa kuchotsedwa kwa ma waya amalola kuti pakhale mawonekedwe osavuta. Kuphatikiza apo, COG nthawi zambiri imapereka maulumikizidwe abwino kwambiri, omwe amathandizira mawonekedwe apamwamba komanso makulidwe akulu a pixel. Izi zimapangitsa COG kukhala chisankho chokondedwa cha zowonetsera zowoneka bwino kwambiri mu mafoni a m'manja, mapiritsi, ndi zida zina zamagetsi zomwe zimalumikizana komanso kuwona bwino ndikofunikira.

Komabe, ukadaulo wa COG ulinso ndi magawo ake amalonda. Njira yolumikizirana ya ACF imatha kukhudzidwa kwambiri ndi kusiyana kwa kutentha ndi chinyezi poyerekeza ndi kutsekeka komwe kumagwiritsidwa ntchito mu COB. Kuphatikiza apo, kulimba kwamakina kwa ma module a COG kumatha kutsika pang'ono kuposa ma module a COB m'malo ena owopsa kwambiri. Mtengo wa msonkhano wa COG ukhozanso kukhala wokwera kuposa COB, makamaka pamawonekedwe okulirapo komanso ma pini apamwamba.

Kupitilira COB ndi COG, ukadaulo wina wofananira womwe ungatchulidwe ndi Chip-on-Flex (COF). Mu COF, dalaivala wa IC amalumikizidwa ndi gawo losindikizidwa (FPC) lomwe limalumikizidwa ndi gawo lapansi lagalasi. COF imapereka chiyerekezo pakati pa kuphatikizika kwa COG ndi kusinthasintha kwa mapangidwe achikhalidwe chokhazikitsidwa ndi PCB. Amagwiritsidwa ntchito nthawi zambiri m'mapulogalamu omwe amafunikira mawonekedwe osinthika kapena pomwe malo amafunikira kulumikizana kocheperako komanso kopindika.

Ku Malio Technology, kudzipereka kwathu popereka mayankho osiyanasiyana komanso apamwamba kwambiri kumawonekera pazogulitsa zathu zonse. Mwachitsanzo, athu "COB/COG/COF Module, FE-based Amorphous C-Cores"Zimapereka chitsanzo cha ukatswiri wathu popanga ma module omwe amagwiritsa ntchito matekinoloje osiyanasiyana a chip-on kuti akwaniritse zofunikira zogwiritsira ntchito. Mofananamo, "COB/COG/COF Module, FE-based 1K101 Amorphous Ribbon"Imatsimikiziranso kusinthasintha kwathu pakugwiritsa ntchito njira zotsogola zotsogolazi. Kuphatikiza apo, kuthekera kwathu kumafikira paziwonetsero zamagulu a LCD ndi LCM, monga zikuwonetseredwa ndi ntchito yathu "Cage Terminal for Metering Mwamakonda Anu LCD/LCM Segment Segment for Metering."Zitsanzo izi zikuwonetsa luso lathu pakukonza njira zowonetsera pazofunikira zapadera zamafakitale osiyanasiyana.

Pomaliza, ukadaulo wa Chip-on-Board (COB) LCD umayimira njira yayikulu yowonetsera kupanga ma module, opereka maubwino okhudzana ndi kulimba, kulimba, komanso kupititsa patsogolo mphamvu zamagetsi. Ngakhale ili ndi malire okhudzana ndi kusinthikanso ndi kusinthasintha kwa mapangidwe poyerekeza ndi njira zina monga COG ndi COF, mphamvu zake zobadwa nazo zimapangitsa kuti ikhale chisankho choyenera pamagwiritsidwe osiyanasiyana, makamaka omwe amafunikira kulimba komanso kugwiritsa ntchito malo. Kumvetsetsa zovuta zaukadaulo wa COB, komanso kusiyanitsa kwake ndi njira zofananira, ndikofunikira kwa mainjiniya ndi opanga omwe akufuna kusankha njira yoyenera yowonetsera pazosowa zawo zenizeni. Ku Malio Technology, timakhalabe patsogolo pazatsopano zowonetsera, kupatsa anzathu chidziwitso ndi zinthu zofunika kuunikira tsogolo laukadaulo wowonera.