LTP-2088AKD 8x8 Tsarin Matrix LED Display Datasheet - Tsawon 2.3 Inch - AlInGaP Hyper Red - 2.6V Forward Voltage - 40mW Power Dissipation - Takardar Fasaha ta Hausa

1. Bayyani Game da Samfur

LTP-2088AKD wani tsari ne na jirgin sama guda ɗaya, 8x8 tsarin matrix LED display module wanda aka ƙera don gabatar da bayanan haruffa da alamomi. Babban aikinsa shine samar da ingantaccen hanyar sadarwa na gani mai ƙarancin wutar lantarki a cikin tsarin lantarki. Babban fa'idar wannan na'urar yana cikin amfani da AlInGaP (Aluminum Indium Gallium Phosphide) Hyper Red LED chips, waɗanda ke ba da daidaito na aiki da inganci. Nunin yana da fuskar launin toka tare da sassan fari, yana haɓaka bambanci da karantawa. An rarrabe shi don ƙarfin haske, yana tabbatar da daidaito a cikin haske a cikin batutuwan samarwa. Ana iya tara na'urar a kwance, yana ba da damar ƙirƙirar nunin haruffa da yawa ba tare da hadaddun hanyoyin sadarwa ba. Dacewarsa tare da daidaitattun lambobin haruffa kamar USASCII da EBCDIC ya sa ya zama mai sassauƙa don haɗawa cikin tsarin dijital daban-daban waɗanda ke buƙatar fitar da rubutu mai sauƙi.

2. Zurfin Binciken Ƙayyadaddun Fasaha

2.1 Halayen Gani

An ayyana aikin gani a yanayin zafin yanayi (T_A) na 25°C. Babban ma'auni, Matsakaicin Ƙarfin Hasken (I_V), yana da ƙimar yau da kullun na 3500 µcd (microcandelas) a ƙarƙashin yanayin gwaji na I_p=32mA da zagayowar aiki 1/16. Mafi ƙarancin ƙayyadaddun ƙima shine 1650 µcd, kuma babu iyakar iyaka da aka jera, yana nuna mayar da hankali kan cika mafi ƙarancin ƙimar haske. Na'urar tana fitarwa a cikin bakan ja tare da Tsawon Tsawon Tsawon Tsawon (λ_p) na 650 nm da Tsawon Tsawon Tsawon (λ_d) na 639 nm, wanda aka auna a I_F=20mA. An nuna tsarkin bakan ta hanyar Tsayin Tsayin Tsayin Tsayin (Δλ) na 20 nm. Ma'auni mai mahimmanci don nunin ɗigo da yawa shine Matsakaicin Matsakaicin Matsakaicin Matsakaicin (I_V-m), wanda aka ƙayyade a matsayin 2:1 matsakaici. Wannan yana nufin mafi haske ɗigo a cikin tsararrun ba zai fi haske sau biyu fiye da mafi duhu ɗigo a ƙarƙashin irin waɗannan yanayin aiki ba, yana tabbatar da kamanni iri ɗaya.

2.2 Halayen Lantarki

Hakanan an ƙayyade ma'auni na lantarki a T_A=25°C. Ƙarfin Ƙarfin Gaba (V_F) don kowane ɗigo LED guda ɗaya yawanci shine 2.6V a I_F=20mA, tare da matsakaicin 2.8V a mafi girman ƙarfin bugun jini na I_F=80mA. Mafi ƙarancin V_Fshine 2.1V a 20mA. Juyawar Juyawa (I_R) an iyakance shi zuwa matsakaicin 100 µA lokacin da aka yi amfani da Juyawar Juyawa (V_R) na 5V, yana nuna kyawawan halayen diode.

2.3 Matsakaicin Matsakaicin Matsayi

Waɗannan ratings suna ayyana iyakokin damuwa waɗanda sama da su lalacewa na dindindin na iya faruwa. Matsakaicin Rage Wutar Lantarki kowane ɗigo bai kamata ya wuce 40 mW ba. Matsakaicin Ƙarfin Gaba kowane ɗigo an ƙididdige shi a 90 mA. Matsakaicin Ƙarfin Gaba kowane ɗigo shine 15 mA a 25°C, tare da ƙimar ragewa na 0.2 mA/°C, ma'ana ƙarfin ci gaba da yarda yana raguwa yayin da yanayin yanayi ya tashi sama da 25°C. Matsakaicin Juyawar Juyawa kowane ɗigo shine 5V. An ƙididdige na'urar don Kewayon Zazzabi na Aiki na -35°C zuwa +85°C da daidaitaccen Kewayon Zafin Ajiya. An ƙayyade solderability don tsarin igiyar ruwa ko sake karkatarwa: na'urar na iya jure 260°C na dakika 3 a wani batu 1/16 inch (kusan 1.59 mm) ƙasa da wurin zama na kunshin.

3. Bayanan Injiniya da Kunshin

Nunin yana da tsayin matrix na 2.3 inches (58.42 mm). An ba da girman kunshin a cikin cikakken zane tare da duk ma'auni a cikin millimeters. Tolerancin ƙira don waɗannan ma'auni shine ±0.25 mm (ko ±0.01 inches) sai dai idan an lura da shi a zahiri akan zane. Wannan matakin daidaito yana da mahimmanci don dacewa da injiniya cikin bangon ko akwati.

4. Haɗin Pin da Da'irar Ciki

Na'urar tana amfani da tsarin pin 16 don haɗawa. An ƙera pinout don tuƙi matrix X-Y. Pin 1-4 da 9-12 sune Anodes don Ginshiƙai 1-4 da 8-5 bi da bi. Pin 5-8 da 13-16 sune Cathodes don Layuka 5-8 da 4-1 bi da bi. Wannan tsari na musamman yana da mahimmanci don ƙirar daidaitaccen da'irar tuƙi. Zanen da'irar ciki yana nuna cewa an tsara LED 64 (layuka 8 x ginshiƙai 8) a cikin tsarin haɗin gwiwa-cathode don layuka. Wannan yana nufin don haskaka takamaiman ɗigo, dole ne a tuƙi madaidaicin anode ginshiƙi sama (ƙarfin lantarki mai kyau) yayin da cathode ɗin sa ya kasance ƙasa (ƙasa). Ana amfani da dabarun haɗawa don duba ta cikin layuka ko ginshiƙai don nuna alamu.

5. Bayanin Tsarin Binning

Takardar bayanai ta bayyana cewa na'urar "An Rarrabe don Ƙarfin Hasken." Wannan yana nuna tsarin binning inda ake rarraba na'urorin da aka kera bisa ga ƙimar hasken da aka auna (a cikin µcd) a ƙarƙashin daidaitattun yanayin gwaji. Ana haɗa na'urorin da suka faɗi cikin takamaiman kewayon ƙarfi. Wannan yana ba masu ƙira damar zaɓar nunin da ke da daidaitaccen haske don wani aikace-aikace, yana hana bambance-bambance masu bayyane tsakanin na'urori daban-daban a cikin samfur. Kodayake ba a cikakken bayani a cikin wannan takarda ba, yawanci binning don irin waɗannan nunin na iya haɗawa da matakan ƙarfi da yawa (misali, high-brightness, standard-brightness).

6. Binciken Lanƙwasa Aiki

Takardar bayanai tana nufin "Yawanci Lantarki / Halayen Gani." Waɗannan jadawali, yawanci ana haɗa su a cikin cikakkun sigogin takardun bayanai, za su wakilci alaƙar da ke tsakanin maɓuɓɓuka masu mahimmanci. Ana tsammanin lanƙwasa sun haɗa da: Ƙarfin Gaba vs. Ƙarfin Gaba (Lanƙwasa I-V), yana nuna alaƙar ƙima kuma yana ba da damar lissafin ƙarfin tuƙi; Ƙarfin Hasken vs. Ƙarfin Gaba, yana nuna yadda fitar da haske ke ƙaruwa tare da halin yanzu, sau da yawa a cikin yanayin ƙasa-layin a mafi girman halin yanzu; Ƙarfin Hasken vs. Yanayin Yanayi, yana nuna raguwar fitarwa yayin da zafin jiki ya tashi; kuma mai yiwuwa lanƙwasa Rarraba Bakan, yana kwatanta ƙarfin dangi a tsawon tsawon tsakiya kusan 650 nm. Bincikin waɗannan lanƙwasa yana da mahimmanci don haɓaka yanayin tuƙi da fahimtar aiki a ƙarƙashin yanayin zafi mara daidaituwa.

7. Jagororin Solder da Haɗawa

Babban jagora da aka bayar shine Matsakaicin Matsakaicin Matsayi don zafin solder: 260°C na dakika 3, wanda aka auna 1.59mm (1/16") ƙasa da wurin zama na kunshin. Wannan shine daidaitaccen ƙima don tsarin igiyar ruwa ko sake karkatarwa. Dole ne masu ƙira su tabbatar da bayanin martabar solder ɗin su bai wuce wannan iyaka ba don hana lalacewa ga cikin LED chips, igiyoyin igiya, ko kunshin filastik. Don solder na hannu, yakamata a yi amfani da ƙarfe mai sarrafa zafin jiki tare da ƙaramin lokacin tuntuɓar. Yakamata a koyaushe a bi daidaitattun hanyoyin sarrafa ESD (Electrostatic Discharge) yayin haɗawa, saboda LED suna da hankali ga lantarki.

8. Shawarwari na Aikace-aikace

8.1 Yanayin Aikace-aikace na Yau da Kullun

Wannan 8x8 tsarin matrix yana da kyau don aikace-aikacen da ke buƙatar ƙanƙanta, rubutu mai ƙarancin ƙuduri ko zane-zane masu sauƙi. Amfanin gama gari sun haɗa da: bangon sarrafa masana'antu don nuna lambobin matsayi ko saƙonni masu sauƙi; kayan aikin gwaji da aunawa don nuna ƙimomin lambobi ko raka'a; da kayan lantarki na mabukaci kamar allunan maki masu sauƙi ko nunin bayanai; da kayan koyon ilimi don koyo game da haɗin microcontroller da haɗawa.

8.2 Abubuwan da ake la'akari da ƙira

Da'irar Tuƙi:Ana buƙatar microcontroller tare da isassun fil ɗin I/O ko na'urorin tuƙi na LED (kamar maɓallin canji tare da fitarwa na yau da kullun). Dole ne da'irar ta aiwatar da haɗawa don zagayawa ta cikin layuka 8 (ko ginshiƙai).
Iyakance Halin Yanzu:Resistors ko masu tuƙi na yau da kullun wajibi ne ga kowane ginshiƙi na anode (ko kowane ɗigo, dangane da ƙira) don saita ƙarfin gaba da hana wuce Matsakaicin Matsakaicin Matsayi.
Rage Wutar Lantarki:Dole ne a mutunta iyakokin 40mW kowane ɗigo da 15mA matsakaicin halin yanzu a cikin tsarin haɗawa. Misali, tare da zagayowar aiki 1/8, halin yanzu na kowane ɗigo na iya zama mafi girma fiye da 15mA, amma dole ne a ƙididdige *matsakaicin* a cikin cikakken zagayowar don tsayawa cikin iyaka.
Kusurwar Dubawa:Siffar "faɗin kusurwar dubawa" tana da fa'ida, amma ba a ƙayyade ainihin rarraba hasken kusurwa ba. Don aikace-aikacen dubawa mai faɗi, ana ba da shawarar kimanta samfuri.
Tari:Siffar tari a kwance tana sauƙaƙa ƙirƙirar nunin lambobi da yawa. Ana buƙatar tsara daidaitawar injiniya da haɗin lantarki tsakanin modules.

9. Kwatancen Fasaha da Bambance-bambance

Babban bambance-bambancen LTP-2088AKD shine amfani da fasahar AlInGaP Hyper Red. Idan aka kwatanta da tsofaffin fasahohi kamar daidaitattun GaAsP (Gallium Arsenide Phosphide) ja LEDs, AlInGaP yana ba da ingantaccen inganci mai haske. Wannan yana nufin zai iya samar da ƙarin haske (mafi girman ƙarfin haske) don adadin wutar lantarki iri ɗaya, yana ba da gudummawa kai tsaye ga siffar "ƙarancin buƙatun wutar lantarki". Hakanan yawanci yana ba da ingantaccen kwanciyar hankali na tsawon tsawon zafin jiki da tsawon rayuwa. Ƙirar fuskar toka/ sassan fari tana inganta bambanci idan aka kwatanta da duk ja ko koren fakitin, musamman a ƙarƙashin yanayin haske mai yawa. Rarrabe ƙarfin haske a bayyane (binning) fa'ida ce don aikace-aikacen da ke buƙatar daidaito.

10. Tambayoyin da ake yawan yi (Bisa Ƙayyadaddun Fasaha)

Q: Menene bambanci tsakanin Tsawon Tsawon Tsawon Tsawon (650nm) da Tsawon Tsawon Tsawon (639nm)?
A: Tsawon tsawon tsawon shine mafi girman ƙarfin wutar lantarki a cikin fitarwar bakan. Tsawon tsawon tsawon shine tsawon tsawon tsawon guda ɗaya na hasken monochromatic wanda zai samar da irin wannan launi (hue) kamar fitarwar LED. Bambancin ya samo asali ne saboda siffar lanƙwasa bakan LED, wanda yana da faɗi.

Q: Ta yaya zan iya ƙididdige resistor na jerin da ake buƙata don ɗigo?
A: Yi amfani da Dokar Ohm: R = (V_supply- V_F) / I_F. Don samar da 5V, yawanci V_Fna 2.6V, da kuma so I_Fna 20mA: R = (5 - 2.6) / 0.02 = 120 Ω. Yi amfani da matsakaicin V_F(2.8V) don ƙirar masu ra'ayin mazan jiya wanda ke tabbatar da cewa halin yanzu bai taɓa wuce manufa ba.

Q: Shin zan iya tuƙa shi tare da ƙarfin lantarki na yau da kullun ba tare da iyakance halin yanzu ba?
A: A'a. Ƙarfin Ƙarfin Gaba na LED yana da haƙuri kuma yana raguwa tare da zafin jiki. Ƙarfin lantarki na yau da kullun kusa da V_Fzai iya haifar da guduwar zafi, inda ƙara halin yanzu yana dumama LED, yana rage V_F, yana haifar da ƙarin halin yanzu, yana haifar da gazawa. Koyaushe yi amfani da iyakance halin yanzu.

Q: Menene ma'anar Matsakaicin Matsakaicin Matsakaicin Matsakaicin 2:1 don ƙirar ta?
A> Yana ba da garantin daidaiton gani. A cikin mafi munin yanayi, ɗigo ɗaya na iya zama sau biyu mafi haske fiye da wani. Don yawancin nunin haruffa, wannan rabo yana karɓuwa kuma ba ya damuwa. Don zane-zane da ke buƙatar daidaitattun matakan toka, yana iya zama la'akari.

11. Nazarin Shari'ar Ƙira da Amfani

Yanayi: Gina nunin haruffa 4 don mai sarrafa zafin jiki.
Zane:An tara modules LTP-2088AKD huɗu a kwance. Ana amfani da microcontroller guda ɗaya (misali, ATmega328P). Saboda ƙarancin I/O, an yi amfani da maɓallin canji na 8-bit serial-in/parallel-out guda biyu (kamar 74HC595) don tuƙi ginshiƙan anode 32 (ginshiƙai 8 x nunin 4). Cathodes 8 na layi (gama gari a duk nunin saboda tari) ana tuƙa su kai tsaye ta hanyar fil ɗin microcontroller 8 waɗanda aka tsara azaman fitarwa mai buɗe-rami/ nutsewa, kowannensu yana da transistor don ƙarin ƙarfin halin yanzu.
Software:Firmware yana aiwatar da tsarin haɗawa. Yana saita tsarin layi ɗaya (ta hanyar maɓallin canji) sannan kawai ya kunna (ƙasa) wannan cathode na layin da ya dace. Yana zagayawa cikin duk layuka 8 da sauri (misali, ƙimar duban 1-2 kHz). Dagewar hangen nesa yana haifar da tunanin ingantaccen hoto.
Lissafin Halin Yanzu:Don nuna duk ɗigo a cikin layi a matsakaicin haske, halin yanzu na kowane ɗigo na iya saita zuwa 25mA. Tare da zagayowar aiki 1/8, matsakaicin halin yanzu kowane ɗigo shine 25mA / 8 = 3.125mA, ƙasa da ƙimar matsakaicin 15mA. Jimlar halin yanzu na wadata ya kai kololuwa lokacin da cikakken layi ya haskaka: 8 ɗigo/nuni * 4 nunin * 25mA = 800mA. Dole ne a ƙididdige wutar lantarki da transistors masu tuƙi layin daidai.

12. Ka'idar Aiki

LTP-2088AKD ya dogara ne akan ka'idar electroluminescence a cikin haɗin p-n semiconductor. Tsarin kayan AlInGaP shine semiconductor kai tsaye bandgap. Lokacin da aka nuna bambanci gaba (ƙarfin lantarki mai kyau akan anode dangane da cathode), electrons daga yankin n-type da ramuka daga yankin p-type ana shigar da su cikin yankin aiki. Lokacin da waɗannan masu ɗaukar caji suka sake haɗuwa, suna sakin makamashi a cikin nau'in photons (haske). Takamaiman abun da ke ciki na Aluminum, Indium, Gallium, da Phosphide yana ƙayyade ƙarfin bandgap, wanda kuma yana ƙayyade tsawon tsawon (launi) na hasken da aka fitar—a wannan yanayin, ja a kusan 650 nm. Substrate na GaAs mara kyau yana taimakawa hasken haske sama, yana inganta ingantaccen fitar da haske na waje daga saman guntu. An kafa matrix 8x8 ta hanyar haɗa igiyoyin LED 64 waɗannan ƙananan guntun LED a cikin tsarin grid na layi-ginshiƙi a cikin kunshin guda ɗaya.

13. Trends na Fasaha

Nunin tsarin matrix ɗigo daban-daban kamar LTP-2088AKD suna wakiltar fasaha mai girma. Trends na yanzu a cikin fasahar nuni suna motsawa zuwa haɗin kai mafi girma da nau'ikan siffofi daban-daban. Haɗaɗɗun modules na tsarin matrix LED tare da ingantattun masu sarrafawa (I2C ko SPI interface) suna zama gama gari, suna sauƙaƙa ƙoƙarin ƙira ga mai amfani na ƙarshe. Don sabbin ƙira waɗanda ke buƙatar ƙananan nunin haruffa, sassan LCDs ko OLEDs sau da yawa suna ba da ƙarancin wutar lantarki da ƙarin tsari mai sassauƙa. Koyaya, na gargajiya LED matrix suna riƙe da fa'idodi a cikin takamaiman wurare: matuƙar haske mai girma don duban waje ko haske mai yawa, faɗin kewayon zafin aiki, tsawon rayuwa, da ƙarfi a cikin mawuyacin yanayin masana'antu. Tushen fasahar LED chip na AlInGaP yana ci gaba da inganta, tare da ci gaba da bincike don ƙara inganci (lumens kowace watt) da inganta tsarkin launi, wanda ke amfanar duk aikace-aikacen LED ja, gami da nunin matrix.