Kayayyakin direban nunin LED sun haɗa da guntuwar direban sikanin layi da guntuwar direba, kuma filayen aikace-aikacen su galibitallan waje LED fuska,na cikin gida LED nuni da bas tasha LED nuni. Daga yanayin nau'in nuni, yana rufe nunin LED monochrome, nunin LED mai launi biyu da cikakken nunin LED mai launi.
A cikin aikin LED cikakken launi nuni, aikin direban IC shine karɓar bayanan nuni (daga katin karɓa ko mai sarrafa bidiyo da sauran hanyoyin bayanan) waɗanda suka dace da ka'idar, samar da PWM a ciki da canje-canjen lokaci na yanzu, kuma sabunta fitarwa da haske launin toka. da sauran hanyoyin PWM masu alaƙa don haskaka LEDs. Na gefe IC wanda ya ƙunshi direba IC, ma'ana IC da MOS sauyawa suna aiki tare akan aikin nuni na nunin jagora kuma yana ƙayyade tasirin nunin da yake gabatarwa.
Ana iya raba kwakwalwan direban LED zuwa kwakwalwan kwamfuta-manufa na gaba ɗaya da kwakwalwan kwamfuta na musamman.
Guntu-manufa ta gaba ɗaya, guntu kanta ba a keɓance ta musamman don LEDs ba, amma wasu kwakwalwan kwakwalwan kwamfuta (kamar serial 2-parallel shift rajista) tare da wasu ayyukan dabaru na nunin jagora.
Guntu ta musamman tana nufin guntu direban da aka ƙera musamman don nunin LED bisa ga halayen haske na LED. LED na'urar siffa ce ta halin yanzu, wato, a ƙarƙashin tsarin jikewa, haskensa yana canzawa tare da canjin halin yanzu, maimakon ta daidaita wutar lantarki a cikinsa. Saboda haka, daya daga cikin manyan fasalulluka na kwazo guntu ne don samar da akai halin yanzu tushen. Tushen na yau da kullun na iya tabbatar da ingantaccen tuƙi na LED kuma ya kawar da flickering na LED, wanda shine buƙatu don nunin LED don nuna hotuna masu inganci. Wasu kwakwalwan kwamfuta masu manufa na musamman kuma suna ƙara wasu ayyuka na musamman don buƙatun masana'antu daban-daban, kamar gano kuskuren LED, sarrafa riba na yanzu da gyara na yanzu.
Juyin Halitta na direba ICs
A cikin 1990s, aikace-aikacen nunin LED sun mamaye launuka ɗaya da dual, kuma ana amfani da direban ICs akai-akai. A cikin 1997, ƙasata ta fito da guntuwar sarrafa tuƙi ta farko 9701 don nunin LED, wanda ya tashi daga matakin grayscale 16 zuwa matakin launin toka na 8192, yana fahimtar WYSIWYG don bidiyo. Daga baya, bisa la'akari da halaye masu fitar da hasken LED, direban na yanzu koyaushe ya zama zaɓi na farko don direban nunin LED mai cikakken launi, kuma direban tashoshi 16 tare da babban haɗin gwiwa ya maye gurbin direban tashoshi 8. A ƙarshen 1990s, kamfanoni irin su Toshiba a Japan, Allegro da Ti a Amurka sun ci gaba da ƙaddamar da guntun direbobin LED na yau da kullun na tashar tashoshi 16. A zamanin yau, domin magance matsalar wayoyi na PCB nakananan farar LED nuni, Wasu masana'antun IC direba sun gabatar da haɗakarwa mai mahimmanci 48-tashar LED kwakwalwan direba na yanzu.
Alamomin aiki na direba IC
Daga cikin alamun aikin nunin LED, ƙimar wartsakewa, matakin launin toka da bayyanar hoto sune ɗayan mahimman bayanai. Wannan yana buƙatar babban daidaito na halin yanzu tsakanin tashoshi na nunin LED direban IC, ƙimar saurin sadarwa mai sauri da saurin amsawa na yanzu. A baya, ƙimar wartsakewa, sikelin launin toka da rabon amfani sun kasance alaƙar ciniki. Don tabbatar da cewa ɗaya ko biyu daga cikin alamun na iya zama mafi kyau, ya zama dole a sadaukar da sauran alamun biyu daidai. Saboda wannan dalili, yana da wahala ga nunin LED da yawa don samun mafi kyawun duniyoyin biyu a aikace-aikace masu amfani. Ko dai adadin wartsakewa bai isa ba, kuma baƙaƙen layukan suna yiwuwa su bayyana ƙarƙashin kayan aikin kyamara masu sauri, ko launin toka bai isa ba, kuma launi da haske ba su da daidaituwa. Tare da ci gaban fasaha na masu kera IC direba, an sami ci gaba a cikin manyan matsaloli uku, kuma an magance waɗannan matsalolin. A halin yanzu, yawancin nunin SRYLED LED suna da ƙimar wartsakewa tare da 3840Hz, kuma babu layukan baƙi da zasu bayyana lokacin hoto tare da kayan kyamara.
Trends a cikin direba ICs
1. tanadin makamashi. Ajiye makamashi shine bin diddigin LED na har abada, kuma yana da mahimmancin ma'auni don la'akari da aikin direban IC. Ajiye makamashi na direba IC ya ƙunshi abubuwa biyu. Ɗayan shine don rage yawan ƙarfin wutar lantarki na yau da kullun na yanzu, ta yadda za a rage ƙarfin wutar lantarki na 5V na gargajiya don aiki ƙasa da 3.8V; ɗayan shine don rage ƙarfin aiki da ƙarfin aiki na direban IC ta hanyar inganta IC algorithm da ƙira. A halin yanzu, wasu masana'antun sun ƙaddamar da direban IC na yau da kullun tare da ƙaramin ƙarfin juyi na 0.2V, wanda ke haɓaka ƙimar amfani da LED fiye da 15%. Ƙarfin wutar lantarki yana da 16% ƙasa da na samfurori na al'ada don rage yawan zafin jiki, ta yadda ƙarfin makamashi na nunin LED ya inganta sosai.
2. Haɗin kai. Tare da saurin raguwar farar pixel na nunin LED, na'urorin da aka haɗa da za a ɗora su akan yanki naúrar suna ƙaruwa ta hanyar juzu'i na geometric, wanda ke ƙaruwa da yawa na ɓangaren tuƙi na ƙirar. DaukeP1.9 karamin farar LED allo a matsayin misali, 15-scan 160*90 module yana buƙatar 180 direban ICs na yanzu, bututun layi 45, da 2 138s. Tare da na'urori da yawa, sararin wayoyi da ke akwai akan PCB ya zama cunkoso, yana ƙara wahalar ƙirar da'ira. A lokaci guda, irin wannan cunkoson abubuwan da aka gyara na iya haifar da matsaloli cikin sauƙi kamar ƙarancin siyarwar, da kuma rage amincin tsarin. Ana amfani da IC ɗin direba kaɗan, kuma PCB yana da yanki mafi girma na wayoyi. Buƙatar ɓangaren aikace-aikacen yana tilasta direban IC ya hau kan hanyar fasaha mai haɗaka sosai.
A halin yanzu, babban direban IC dillalai a cikin masana'antar sun ci gaba da ƙaddamar da haɗakarwa ta 48-tashar LED akai-akai na yanzu direban ICs, wanda ke haɗa manyan da'irori na gefe a cikin direban IC wafer, wanda zai iya rage rikitaccen tsarin ƙirar PCB-gefen aikace-aikace. . Hakanan yana guje wa matsalolin da ke haifar da iyawar ƙira ko bambance-bambancen ƙira na injiniyoyi daga masana'antun daban-daban.
Lokacin aikawa: Maris-03-2022
