Hariho ubwoko bwinshi bwimikorere yo gukoraho ecran yerekana, kandi ibyiciro nibyiza cyane.Biterwa ahanini nuburyo bwo gutwara no kugenzura uburyo bwa TFT LCD.Kugeza ubu, muri rusange hari uburyo bwinshi bwo guhuza amabara LCDs kuri terefone igendanwa: Imigaragarire ya MCU (nayo yanditswe nka MPU interineti), Imigaragarire ya RGB, Imigaragarire ya SPI VSYNC, Imigaragarire ya MIPI, Imigaragarire ya MDDI, Imigaragarire ya DSI, n'ibindi Muri byo, gusa Modire ya TFT ifite interineti ya RGB.
Imigaragarire ya MCU na RGB ikoreshwa cyane.
Imigaragarire ya MCU
Kuberako ikoreshwa cyane mubijyanye na microcomputer imwe-chip imwe, yitwa.Nyuma, ikoreshwa cyane muri terefone zigendanwa zo hasi, kandi ibiranga nyamukuru ni uko bihendutse.Ijambo risanzwe kuri interineti MCU-LCD ni 8080 ya bisi yatanzwe na Intel, bityo I80 ikoreshwa mukwerekeza kuri ecran ya MCU-LCD mubyangombwa byinshi.
8080 ni ubwoko bubangikanye, buzwi kandi nka DBI (Data Bus Imigaragarire) amakuru ya bisi, microprocessor MPU, interineti MCU, na CPU, mubyukuri mubintu bimwe.
Imigaragarire ya 8080 yateguwe na Intel kandi irasa, idahuye, igice cya duplex itumanaho.Ikoreshwa mukwagura hanze ya RAM na ROM, hanyuma igashyirwa mubikorwa bya LCD.
Hano hari bits 8, 9 bits, 16 bits, 18 bits, na 24 bits zo kohereza amakuru biti.Nukuvuga, bito y'ubugari bwa data bus.
Bikunze gukoreshwa ni 8-bit, 16-bit, na 24-bit.
Ibyiza ni: kugenzura biroroshye kandi byoroshye, nta saha na signal ya syncronisation.
Ingaruka ni: GRAM irakoreshwa, biragoye rero kugera kuri ecran nini (hejuru ya 3.8).
Kuri LCM hamwe na MCU yimbere, chip yimbere yitwa LCD shoferi.Igikorwa nyamukuru nuguhindura amakuru / itegeko yoherejwe na mudasobwa yakiriye muri RGB ya buri pigiseli hanyuma ukayerekana kuri ecran.Iyi nzira ntabwo isaba akadomo, umurongo, cyangwa amasaha yo kumurongo.
LCM:.
GRAM: ibishushanyo RAM, ni ukuvuga igitabo cyerekana amashusho, ibika amakuru yishusho kugirango yerekanwe muri chip ILI9325 itwara TFT-LCD yerekana.
Usibye umurongo wamakuru (dore amakuru ya 16-bit nkurugero), abandi ni chip guhitamo, gusoma, kwandika, na data / gutegeka bine.
Mubyukuri, usibye kuriyi pin, mubyukuri hariho gusubiramo pin RST, mubisanzwe bigasubirwamo numero 010.
Imigaragarire yintangarugero igishushanyo niki gikurikira:
Ibimenyetso byavuzwe haruguru ntibishobora gukoreshwa muburyo bwihariye bwumuzunguruko.Kurugero, mubisabwa bimwe byumuzunguruko, kugirango ubike ibyambu bya IO, birashoboka kandi guhuza byimazeyo guhitamo chip no gusubiramo ibimenyetso kurwego rwagenwe, kandi ntutunganyirize ibimenyetso byasomwe RDX.
Birakwiye ko tumenya kuva hejuru: ntabwo ari Data Data gusa, ahubwo na Command yoherejwe kuri ecran ya LCD.Urebye neza, bisa nkaho bikeneye kohereza gusa pigiseli yamabara kuri ecran, kandi abashya badafite ubuhanga akenshi birengagiza amabwiriza yo kohereza.
Kuberako ibyo bita itumanaho hamwe na ecran ya LCD mubyukuri ivugana na LCD ya ecran ya shoferi igenzura, kandi chip ya digitale akenshi iba ifite rejisitiri zitandukanye (keretse niba chip ifite imikorere yoroshye cyane nka 74 serie, 555, nibindi), harahari icyerekezo cyerekezo.Ukeneye kohereza iboneza.
Ikindi kintu ugomba kumenya ni: Chip ya LCD ikoresha ibice 8080 ibangikanye ikenera yubatswe muri GRAM (Graphics RAM), ishobora kubika amakuru byibura ecran imwe.Ninimpamvu ituma moderi ya ecran ikoresha iyi interface muri rusange ihenze kuruta abakoresha interineti ya RGB, kandi RAM iracyagura.
Muri rusange: Imigaragarire ya 8080 yohereza amabwiriza yo kugenzura hamwe namakuru binyuze muri bisi ibangikanye, kandi igarura ecran muguhindura amakuru kuri GRAM izanye na LCM y'amazi ya kristu.
TFT LCD Mugaragaza RGB Imigaragarire
TFT LCD Mugaragaza RGB Imigaragarire, izwi kandi nka DPI (Erekana Pixel Interface) Imigaragarire, nayo ni intera ibangikanye, ikoresha guhuza bisanzwe, isaha, n'imirongo yerekana ibimenyetso kugirango wohereze amakuru, kandi igomba gukoreshwa na bisi ya seri ya SPI cyangwa IIC kugirango wohereze. kugenzura amategeko.
Ku rugero runaka, itandukaniro rinini hagati yaryo na 8080 intera ni uko umurongo wamakuru hamwe numurongo wo kugenzura TFT LCD Screen ya TGB LCD itandukanijwe, mugihe intera 8080 iba myinshi.
Irindi tandukaniro nuko kuva interineti yerekana interineti RGB ikomeza kohereza pigiseli yamakuru ya ecran yose, irashobora kuvugurura amakuru yerekanwe ubwayo, GRAM rero ntigikenewe, igabanya cyane igiciro cya LCM.Kugirango ugaragaze LCD modules ifite ubunini nubunini bungana, ecran ya ecran yerekana RGB interineti yumushinga rusange ihendutse cyane kuruta 8080.
Impamvu ituma ecran ya ecran yerekana uburyo bwa RGB idakenera inkunga ya GRAM ni ukubera ko amashusho ya RGB-LCD yibukwa na sisitemu yo kwibuka, bityo ubunini bwayo bukaba bugarukira gusa ku bunini bwa sisitemu yo kwibuka, ku buryo RGB- LCD irashobora gukorwa mubunini bunini, Nkubu 4.3 "irashobora gufatwa nkurwego rwinjira gusa, mugihe ecran 7" na 10 "muri MID zitangiye gukoreshwa cyane.
Ariko, mugitangira igishushanyo cya MCU-LCD, birakenewe gusa gutekereza ko kwibuka kwa microcomputer imwe ya chip ari nto, bityo kwibuka bikaba byubatswe muri module ya LCD.Noneho software ivugurura ububiko bwa videwo binyuze mumabwiriza yihariye yo kwerekana, bityo ecran ya ecran yerekana MCU ecran akenshi ntishobora gukorwa nini cyane.Mugihe kimwe, umuvuduko wo kwerekana umuvuduko uratinda kurenza RGB-LCD.Hariho kandi itandukaniro ryerekana uburyo bwo kohereza amakuru.
Mugukoraho ecran yerekana ecran ya RGB ikenera gusa videwo yo gutunganya amakuru.Nyuma yo gutangira kwerekana, LCD-DMA izahita yohereza amakuru mububiko bwa videwo kuri LCM binyuze muri interineti ya RGB.Ariko ecran ya MCU ikeneye kohereza itegeko ryo gushushanya guhindura RAM imbere muri MCU (ni ukuvuga RAM ya ecran ya MCU ntishobora kwandikwa muburyo butaziguye).
Kwerekana umuvuduko wa ecran ya ecran yerekana RGB biragaragara ko yihuta kurusha MCU, kandi mubijyanye no gukina amashusho, MCU-LCD nayo iratinda.
Kuri LCM ya ecran ya ecran yerekana RGB ya interineti, ibisohoka mubakira ni amakuru ya RGB ya buri pigiseli itaziguye, nta guhinduka (usibye gukosora GAMMA, nibindi).Kuri iyi interface, umugenzuzi wa LCD arasabwa mubakira kugirango atange amakuru ya RGB n'ingingo, umurongo, ikadiri yo guhuza ibimenyetso.
Ibyinshi muri ecran nini ikoresha uburyo bwa RGB, kandi amakuru yohereza amakuru nayo agabanijwemo ibice 16, 18 bit, na 24 bit.
Kwihuza muri rusange harimo: VSYNC, HSYNC, DOTCLK, CS, GUSUBIZA, bamwe bakeneye RS, naho ibindi ni imirongo yamakuru.
Imigaragarire ya tekinoroji yo kwerekana LCD mubyukuri ni ikimenyetso cya TTL uhereye kurwego.
Imigaragarire yimikorere yibikorwa byerekana LCD igenzura iri kurwego rwa TTL, naho ibyuma byuma byerekana interineti LCD nayo iri kurwego rwa TTL.Byombi rero byashoboraga guhuzwa bitaziguye, terefone zigendanwa, tableti, hamwe nimbaho ziterambere byahujwe muburyo butandukanye (mubisanzwe bihujwe ninsinga zoroshye).
Inenge y'urwego rwa TTL nuko idashobora kwanduzwa cyane.Niba ecran ya LCD iri kure cyane yububiko bwa mama (metero 1 cyangwa irenga), ntishobora guhuzwa na TTL, kandi birasabwa guhinduka.
Hariho ubwoko bubiri bwingenzi bwimiterere yibara rya TFT LCD:
1. Imigaragarire ya TTL (Imigaragarire ya RGB)
2. Imigaragarire ya LVDS (paki yamabara ya RGB muburyo bwo kohereza ibimenyetso bitandukanye).
Isukari ya kirisiti ya ecran ya TTL ikoreshwa cyane cyane kuri ecran ntoya ya TFT iri munsi ya santimetero 12.1, hamwe n'imirongo myinshi ya interineti hamwe nintera ngufi yoherejwe;
Isura ya kirisiti ya ecran ya LVDS ikoreshwa cyane cyane kuri ecran nini ya TFT hejuru ya santimetero 8.Imigaragarire ifite intera ndende yoherejwe hamwe numubare muto wimirongo.
Mugaragaza nini yerekana uburyo bwinshi bwa LVDS, kandi pin yo kugenzura ni VSYNC, HSYNC, VDEN, VCLK.S3C2440 ishyigikira pin zigera kuri 24, kandi amakuru yamakuru ni VD [23-0].
Amashusho yishusho yoherejwe na CPU cyangwa ikarita yubushushanyo ni ikimenyetso cya TTL (0-5V, 0-3.3V, 0-2.5V, cyangwa 0-1.8V), kandi LCD ubwayo yakira ikimenyetso cya TTL, kuko ikimenyetso cya TTL ni yandujwe ku muvuduko mwinshi nintera ndende Igihe cyo gukora ntabwo ari cyiza, kandi ubushobozi bwo kurwanya kwivanga ni bubi.Nyuma, uburyo butandukanye bwo kohereza bwatanzwe, nka LVDS, TDMS, GVIF, P&D, DVI na DFP.Mubyukuri, bashiraho gusa ibimenyetso bya TTL byoherejwe na CPU cyangwa ikarita yubushushanyo mubimenyetso bitandukanye byo kohereza, kandi bagahindura ibimenyetso byakiriwe kuruhande rwa LCD kugirango babone ikimenyetso cya TTL.
Ariko uko byagenda kose uburyo bwo kohereza bwakoreshejwe, ibimenyetso byingenzi bya TTL ni bimwe.
Imigaragarire ya SPI
Kubera ko SPI ari ihererekanyabubasha, ihererekanyabubasha ryagabanutse, kandi irashobora gukoreshwa gusa kuri ecran ntoya, muri rusange kuri ecran iri munsi ya santimetero 2, mugihe ikoreshwa nka ecran ya LCD.Kandi kubera guhuza kwayo, kugenzura software biragoye.Koresha bike.
Imigaragarire ya MIPI
MIPI.Hano hari WorkGroups zitandukanye munsi ya MIPI Alliance, isobanura urukurikirane rwibipimo byimbere byimbere ya terefone igendanwa, nka kamera ya kamera CSI, kwerekana interineti DSI, interineti ya radiyo yumurongo DigRF, mikoro / imvugo yerekana SLIMbus, nibindi byiza byurwego rusanzwe rwihuriro ni uko abakora terefone igendanwa bashobora guhitamo byoroshye chip na modul zitandukanye kumasoko ukurikije ibyo bakeneye, bigatuma byihuta kandi byoroshye guhindura ibishushanyo nibikorwa.
Izina ryuzuye rya MIPI interineti ikoreshwa kuri ecran ya LCD igomba kuba interineti ya MIPI-DSI, kandi inyandiko zimwe zita gusa DSI (Erekana Serial Interface).
DSI-ihuza periferique ishyigikira uburyo bubiri bwibanze bwo gukora, bumwe nuburyo bwo gutegeka, ubundi nuburyo bwa Video.
Birashobora kugaragara muri ibi ko interineti ya MIPI-DSI nayo ifite ubushobozi nubushobozi bwo gutumanaho amakuru icyarimwe, kandi ntikeneye intera nka SPI kugirango ifashe kohereza amategeko yo kugenzura.
Imigaragarire ya MDDI
Imigaragarire MDDI (Mobile Display Digital Interface) yatanzwe na Qualcomm mu 2004 irashobora kuzamura ubwizerwe bwa terefone zigendanwa no kugabanya gukoresha amashanyarazi mugabanya imiyoboro.Dushingiye ku mugabane wa Qualcomm ku isoko rya chip mobile, mubyukuri ni umubano uhiganwa hamwe na MIPI yavuzwe haruguru.
Imigaragarire ya MDDI ishingiye kuri tekinoroji ya LVDS itandukanye kandi ishyigikira igipimo ntarengwa cya 3.2Gbps.Imirongo yikimenyetso irashobora kugabanuka kuri 6, iracyari nziza cyane.
Birashobora kugaragara ko interineti ya MDDI iracyakeneye gukoresha SPI cyangwa IIC kugirango yohereze amategeko yo kugenzura, kandi yohereza amakuru ubwayo.
Igihe cyo kohereza: Nzeri-01-2023