LTD-4708JG LED Display Datasheet - Tsawon Lambobi 0.4-inch - AlInGaP Kore - 2.6V Na Gaba - Takardun Fasaha na Turanci

1. Bayyani Game da Samfur

LTD-4708JG na'urar nuni ce mai lambobi biyu, sassa bakwai, wacce aka tsara don aikace-aikacen da ke buƙatar karanta lambobi masu haske da bayyananne. Babban aikinta shi ne nuna lambobi biyu (0-9) ta amfani da sassan LED masu sarrafa kansu. Fasahar cibiyar tana amfani da kayan semiconductor na AlInGaP (Aluminum Indium Gallium Phosphide) da aka girma akan tushen GaAs marar gani, wanda aka sani da samar da hasken kore mai inganci. Na'urar tana da fuskar launin toka tare da alamun sassa fari, wanda ke haɓaka bambanci da karantawa a ƙarƙashin yanayi daban-daban na haske.

An rarraba nunin a matsayin nau'in cathode gama gari, ma'ana an haɗa cathodes na LED na kowane lamba a ciki. Wannan tsari yana sauƙaƙa haɗakarwa a cikin da'irori masu tuƙi, yana ba da damar sarrafa lambobi da yawa tare da rage adadin filayen I/O na microcontroller. Babban fa'idodinsa sun haɗa da kyakkyawan bayyanar haruffa saboda sassa masu daidaito, haske mai ƙarfi da bambanci, faɗin kusurwar kallo don ganin daga wurare daban-daban, da kuma amincin tsayayyen yanayi na fasahar LED. Kunshin ya bi ka'idojin RoHS, ba shi da gubar.

2. Zurfin Bayanan Fasaha

2.1 Halayen Hoto da Na Gani

Aikin gani shine tsakiyar aikin nunin. A daidaitaccen gwajin na'urar na 1mA a kowane sashe, matsakaicin ƙarfin haske ya bambanta daga mafi ƙanƙanta na 320 µcd zuwa ƙimar yau da kullun na 850 µcd. Wannan ma'auni yana ayyana hasken da ake gani. Tsawon zango mai rinjaye (λd) an ƙayyade shi a 572 nm, yana sanya fitarwa a cikin yankin kore na bakan gani. Tsawon zango mafi girma (λp) shine 571 nm, tare da rabin faɗin layin bakan (Δλ) na 15 nm, yana nuna launin kore mai tsafta da cikakke. An tabbatar da daidaitawar ƙarfin haske tsakanin sassa a cikin yanki mai haske iri ɗaya ya kasance cikin rabo 2:1, yana tabbatar da daidaiton haske a cikin harafin da aka nuna. An ƙayyade maganganun da ba a zaɓa ba, hasken da ba a so na sassan da ba a zaɓa ba, ya zama ≤ 2.5%.

2.2 Halayen Lantarki

Ma'aunin lantarki yana ayyana iyakokin aiki da yanayi na na'urar. Ƙarfin lantarki na gaba (VF) a kowane sashe yawanci 2.6V ne tare da matsakaicin 2.6V a ƙarfin lantarki na gaba (IF) na 1mA. Wannan ƙimar tana da mahimmanci don ƙirƙirar da'irar iyakancewar na'urar. Matsakaicin ƙididdiga na cikakke yana saita iyakoki masu ƙarfi: ci gaba da ƙarfin lantarki na gaba a kowane sashe shine 25 mA, yana raguwa da layi ta 0.28 mA/°C sama da yanayin yanayi na 25°C. Ana ba da izinin matsakaicin ƙarfin lantarki na gaba na 60 mA a ƙarƙashin yanayin bugun jini (1/10 aikin aiki, faɗin bugun jini 0.1ms). Matsakaicin ƙarfin lantarki na baya a kowane sashe shine 5V, wanda aka yi niyya don gwada ƙarfin lantarki na baya (IR, matsakaicin 100 µA a VR=5V) kuma ba don ci gaba da aiki ba. Matsakaicin ɓarnawar wutar lantarki a kowane sashe shine 70 mW.

3. Bayanan Injiniya da Kunshin

Nunin yana da tsayin lamba na 0.4 inches (10.0 mm). An ba da girman kunshin a cikin zane mai cikakken bayani. Muhimman bayanan injiniya sun haɗa da: duk ma'auni suna cikin millimeters tare da juzu'i na gabaɗaya na ±0.25 mm; juzu'in canjin ƙugiya shine ±0.4 mm; diamita na ramin PCB da aka ba da shawarar shine 1.0 mm. An kuma ayyana ƙayyadaddun kayan ado, yana iyakance kayan waje akan sassa zuwa ≤10 mils, gurɓataccen tawada a saman zuwa ≤20 mils, lanƙwasa zuwa ≤1/100, da kumfa a cikin sassa zuwa ≤10 mils.

4. Tsarin Ƙugiya & Da'irar Ciki

Na'urar tana da tsarin ƙugiya 10. Zanen da'irar ciki yana nuna nodes na cathode gama gari guda biyu, ɗaya ga kowane lamba (Lamba 1 da Lamba 2). An fitar da anodes na sassa A zuwa G da ma'aunin decimal (D.P.) zuwa ƙugiyoyi daban-daban. Aikin ƙugiya na musamman shine: 1 (Anode C), 2 (Anode D.P.), 3 (Anode E), 4 (Common Cathode Digit 2), 5 (Anode D), 6 (Anode F), 7 (Anode G), 8 (Anode B), 9 (Common Cathode Digit 1), 10 (Anode A). Wannan tsari yana da mahimmanci don ƙirƙirar da'irar tuƙi ta waje.

5. Matsakaicin Ƙididdiga na Cikakke & Yanayin Aiki

Bin waɗannan ƙididdiga da ƙarfi yana da mahimmanci don hana lalacewa na dindindin. Na'urar na iya aiki a cikin kewayon yanayin zafi na -35°C zuwa +105°C kuma ana iya adana ta a cikin wannan kewayon. Don yin solder yayin haɗawa, an ƙayyade yanayin 260°C na dakika 3 a 1/16 inch (kusan 1.6 mm) a ƙasa da matakin wurin zama. Dole ne a guje wa wuce gona da iri na matsakaicin zafin jiki yayin haɗawa.

6. Bincike na Lanƙwasa Aiki

Takardun bayanan yana nuni zuwa lanƙwasa na halayen lantarki/na gani na yau da kullun. Duk da yake ba a cikakke bayanin zane-zane na musamman a cikin rubutun da aka bayar, irin waɗannan lanƙwasa yawanci suna nuna alaƙa tsakanin ƙarfin lantarki na gaba (IF) da ƙarfin haske (IV), suna nuna yadda haske ke ƙaruwa tare da na'urar har zuwa matsakaicin ƙididdiga. Hakanan suna iya nuna ƙarfin lantarki na gaba (VF) daidai da na'urar da kuma bambancin ƙarfin haske tare da yanayin zafi na yanayi. Waɗannan lanƙwasa suna da mahimmanci ga masu ƙira don inganta ƙarfin tuƙi don hasken da ake so yayin kiyaye inganci da tsawon rai, da kuma fahimtar raguwar aiki a yanayin zafi mai girma.

7. Shawarwarin Aikace-aikace & Abubuwan Ƙira

7.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan nunin ya dace da aikace-aikacen da ke buƙatar ƙananan alamomin lambobi masu haske da aminci. Amfanin gama gari ya haɗa da kayan aikin gwaji da aunawa (multimeters, masu ƙididdiga mitar), faranti na sarrafa masana'antu, kayan amfani na mabukaci (microwaves, tanda, injunan wanki), karatun dashboard na mota (don kayan haɗi na baya), da tashoshi na siyarwa. Haske mai ƙarfi da faɗin kusurwar kallonsa sun sa ya dace da wurare masu haske mai yawa na yanayi.

7.2 Jagororin Ƙira

Lokacin haɗa wannan nunin, dole ne a yi la'akari da abubuwa da yawa.Iyakancewar Na'urar:Masu juriya na iyakancewar na'urar na waje suna wajibi ne ga kowane layin anode ko cathode don saita ƙarfin lantarki na gaba a kowane sashe, yawanci tsakanin 1-20 mA dangane da hasken da ake buƙata da kasafin wutar lantarki. Ana iya ƙididdige ƙimar mai juriya ta amfani da R = (Vcc - VF) / IF, inda VF shine ƙarfin lantarki na gaba na yau da kullun.Haɗakarwa:Don nunin lambobi biyu na cathode gama gari, tsarin tuƙi na haɗakarwa ya fi dacewa. Wannan ya haɗa da aiwatar da cathode gama gari na lamba ɗaya a lokaci guda (ta hanyar sauya transistor) yayin amfani da daidaitattun ƙirar anode don sassan da ake so na wannan lamba. Dole ne ƙimar sabuntawa ta yi girma sosai (yawanci >60 Hz) don guje wa flicker da ake iya gani.Tsarin PCB:Bi girman ramin da aka ba da shawarar na 1.0 mm don yin solder mai aminci. Tabbatar da isasshen faɗin gado don ƙarfin lantarki na sashe.Kusurwar Kallo:Sanya nunin yana la'akari da ƙayyadaddun kusurwar kallonsa don tabbatar da mafi kyawun ganin mai amfani na ƙarshe.

8. Kwatancen Fasaha da Bambance-bambance

Idan aka kwatanta da tsofaffin fasahohi kamar daidaitattun LED kore na GaP (Gallium Phosphide), AlInGaP yana ba da ingantaccen inganci na haske sosai, yana haifar da haske mafi girma don ƙarfin tuƙi iri ɗaya. Amfani da tushen GaAs marar gani yana inganta bambanci ta hanyar rage tarwatsa haske na ciki. Fuskar launin toka tare da sassa fari zaɓi ne na ƙira wanda ke haɓaka bambanci idan aka kwatanta da fuskar baƙar fata ko launin toka gaba ɗaya. Kasancewar kunshin na musamman na sassa bakwai, yana ba da mafi haɗakar da ƙarfi na injiniya idan aka kwatanta da amfani da LED daban-daban don ƙirƙirar lambobi, yana adana lokacin haɗawa da kuma tabbatar da daidaiton jeri na sassa.

9. Tambayoyin da ake yawan yi (FAQs)

Q: Menene manufar tsarin cathode gama gari?

A: Yana sauƙaƙa ƙirar da'irar don haɗakar lambobi da yawa. Maimakon buƙatar haɗin ƙasa daban-daban ga kowane 14+ sassa na kowane lamba, kuna buƙatar ɗaya kawai a kowane lamba, yana rage adadin layukan tuƙi da ake buƙata sosai.

Q: Ta yaya zan ƙididdige ƙimar mai juriya mai iyakancewa?

A: Yi amfani da Dokar Ohm: R = (Ƙarfin Wutar Lantarki - Ƙarfin Lantarki na Gaba na LED) / Ƙarfin Lantarki na Gaba da ake so. Don wadata na 5V, VF na 2.6V, da IF da ake so na 10mA: R = (5 - 2.6) / 0.01 = 240 Ohms. Koyaushe yi amfani da ƙimar daidaitaccen da ya fi kusa kuma tabbatar da ƙimar wutar lantarki.

Q: Shin zan iya tuƙa wannan nunin tare da tushen ƙarfin lantarki na dindindin ba tare da iyaka ba?

A: A'a. LED na'urori ne masu tuƙi. Ƙarfin lantarki na gabansu yana da juzu'i kuma yana raguwa tare da zafin jiki. Haɗa kai tsaye zuwa tushen ƙarfin lantarki wanda ya wuce VF zai haifar da wuce gona da iri na na'urar, yana iya lalata sashe. Mai juriya a jere ko direba na'urar dindindin yana da mahimmanci.

Q: Menene ma'anar \"an rarraba don ƙarfin haske\"?

A: Yana nuna cewa an rarraba na'urori ko an tsara su bisa ga fitar hasken da aka auna. Wannan yana ba masu ƙira damar zaɓar sassa tare da matakan haske masu daidaito don aikace-aikacensu, wanda ke da mahimmanci ga nunin lambobi da yawa inda daidaito ke da mahimmanci.

10: Nazarin Shari'ar Ƙira mai Aiki

Yi la'akari da ƙirƙirar ƙirar ƙididdiga mai sauƙi ta amfani da microcontroller. Microcontroller zai sami filayen I/O 8 da aka haɗa zuwa anodes na sassa (A-G da DP) ta hanyar masu juriya masu iyakancewa. Ƙarin filayen I/O guda biyu za su sarrafa transistors na NPN (ko masu sauya iri ɗaya) da aka haɗa zuwa ƙugiyoyin cathode gama gari guda biyu (Lamba 1 da Lamba 2). Firmware zai aiwatar da tsarin haɗakarwa: kunna transistor don Lamba 1, fitar da ƙirar sassa don ƙimar lamba ta farko akan tashoshin anode, jira ɗan gajeren lokaci (misali, 5ms), sannan kashe transistor na Lamba 1. Na gaba, kunna transistor don Lamba 2, fitar da ƙirar sassa don lamba ta biyu, jira, sannan kashe ta. Wannan zagayowar yana maimaitawa ci gaba. Lokacin dole ne ya tabbatar cewa ba a wuce matsakaicin ƙarfin lantarki a kowane sashe ba kuma matsakaicin ƙarfin lantarki ya cika hasken da ake so.

11. Ka'idar Aiki

Na'urar tana aiki bisa ka'idar electroluminescence a cikin haɗin p-n na semiconductor. Lokacin da aka yi amfani da ƙarfin lantarki na gaba wanda ya wuce ƙarfin kunna diode (kusan 2.05-2.6V don wannan kayan AlInGaP), electrons daga yankin n-type da ramuka daga yankin p-type ana shigar da su cikin yankin aiki inda suke sake haɗuwa. A cikin LED na AlInGaP, wannan sake haɗuwa yana sakin makamashi da farko a cikin nau'in photons tare da tsawon zango daidai da hasken kore (kusan 572 nm). Takamaiman haɗin gawa na Aluminum, Indium, Gallium, da Phosphide yana ƙayyade ƙarfin bandgap don haka launin hasken da aka fitar. Tsarin sassa bakwai an ƙirƙira shi ta hanyar ƙirƙira irin waɗannan guntuwar LED da yawa akan tushe da haɗa su da igiyoyin haɗin gwiwa zuwa ƙugiyoyin waje.

12. Trends na Fasaha

Duk da yake nunin LED na sassa bakwai ya kasance ingantaccen mafita mai tsada don karatun lambobi, faɗin yanayin fasahar nuni yana ci gaba. Akwai wani yanayi na gabaɗaya zuwa ga haɗakarwa mafi girma, kamar nunai tare da cikakkun direba ICs (misali, modules masu dacewa da TM1637) waɗanda ke sadarwa ta hanyar ƙa'idodin jeri masu sauƙi (I2C, SPI), yana rage nauyin albarkatun microcontroller. Dangane da kayan, yayin da AlInGaP ke da inganci sosai ga ja, orange, amber, da kore, fasahar InGaN (Indium Gallium Nitride) ta mamaye don haske mai ƙarfi shuɗi, kore, da farar LED. Don aikace-aikacen da ke buƙatar iyawar haruffa ko zane, nunin LED na dot-matrix ko OLED suna ƙara zama gama gari. Duk da haka, don sauƙi, haske, ƙananan alamomin lambobi masu ƙarancin wutar lantarki a cikin mawuyacin yanayi, nunin LED na sassa bakwai daban-daban kamar LTD-4708JG suna ci gaba da ba da haɗin gwiwar aminci, sauƙi, da aiki wanda ba za a iya doke shi ba.