LTD-6740JD LED Display Datasheet - 0.56-inch Digit Height - Hyper Red Color - 2.6V Forward Voltage - 70mW Power Dissipation - Takardun Fasaha na Turanci

1. Bayanin Samfur

Na'urar ita ce tsarin nuni na LED mai lambobi biyu bakwai, wanda aka tsara don nuna bayanan lambobi. Babban aikinta shine samar da karatu na lambobi masu haske, bayyananne, kuma amintattu a cikin kayan lantarki daban-daban. Babban aikace-aikacen yana cikin kayan aikin ma'auni, kwamfitin sarrafawa, da na'urorin lantarki na mabukaci inda ake buƙatar nuni na lambobi biyu.

Nunin yana amfani da ci-gaban fasahar AlInGaP (Aluminum Indium Gallium Phosphide) don abubuwan fitar da haske. An zaɓi wannan tsarin kayan musamman saboda ingantaccen aiki da ingantaccen aiki a cikin bakan launin ja/lemu/amber. Ana yin guntu-guntu a kan wani abu na GaAs (Gallium Arsenide) marar gani, wanda ke taimakawa wajen inganta bambanci ta hanyar rage tarwatsa haske da tunani a ciki. Kunshin yana da fuskar launin toka tare da alamomin sassa fari, yana inganta bambancin gani tsakanin yanayin haske da maras haske don ingantaccen karatu a ƙarƙashin yanayin haske daban-daban.

2. Bincike Mai Zurfi na Ma'auni na Fasaha

2.1 Halayen Hoto da Na Gani

Ana ayyana aikin gani a ƙarƙashin daidaitattun yanayin gwaji a yanayin zafin jiki (Ta) na 25°C. Babban ma'auni, Matsakaicin Ƙarfin Hasken (Iv), yana da ƙimar al'ada na 700 µcd lokacin da aka tuka shi da kwararar gaba (IF) na 1 mA a kowane sashe. Mafi ƙarancin ƙayyadaddun ƙimar shine 320 µcd, kuma babu iyakar iyaka da aka ƙayyade a cikin ma'auni na al'ada, yana nuna mayar da hankali kan tabbacin mafi ƙarancin haske. An ƙayyade ma'aunin daidaiton ƙarfin haske tsakanin sassan a matsakaicin 2:1, yana tabbatar da kamanni iri ɗaya a duk faɗin nunin.

Ana ayyana halayen launi ta hanyar ma'auni na tsawon raƙuman ruwa. Mafi Girman Tsawon Raƙuman Fitowa (λp) yawanci shine 650 nm, yana sanya wannan na'urar a cikin yankin ja mai zurfi na bakan gani. An ƙayyade Tsawon Raƙuman Mamaya (λd) a matsayin 639 nm. Bambanci tsakanin kololuwar tsawon raƙuman ruwa da mamayar tsawon raƙuman ruwa, tare da Rabin Faɗin Layin Bakan (Δλ) na 20 nm (na al'ada), yana bayyana tsaftar bakan da takamaiman inuwar ja da aka fitar. Ana yin ma'aunin ƙarfin haske ta amfani da haɗin firikwensin da tace wanda ya kusanci lanƙwaran amsawar ido na CIE photopic, yana tabbatar da cewa ƙimar suna da alaƙa da hangen nesa na ɗan adam.

2.2 Ma'auni na Lantarki da Zafin Jiki

Ma'auni Mafi Girman Cikakken suna ayyana iyakokin aiki waɗanda ba za a wuce su ba don hana lalacewa ta dindindin. Ci gaba da Kwararar Gaba a kowane sashe an ƙididdige shi a 25 mA. Duk da haka, ƙimar rage ƙima na 0.33 mA/°C yana aiki a layi sama da 25°C, ma'ana mafi girman ƙimar ci gaba da kwarara yana raguwa yayin da zafin jiki ya tashi. Don aikin bugun jini, ana ba da izinin Kololuwar Kwararar Gaba na 90 mA a ƙarƙashin takamaiman sharuɗɗa: ma'auni na 1/10 na aiki da faɗin bugun jini na 0.1 ms. Mafi girman Ragewar Wutar Lantarki a kowane sashe shine 70 mW.

Ƙarfin Wutar Lantarki na Gaba (VF) a kowane sashe, ma'auni mai mahimmanci don ƙira na'urar lantarki, ya bambanta daga 2.1V (ƙarami) zuwa 2.6V (matsakaici) a gwajin na'urar na 20 mA. Ƙarfin juriya na Koma baya (VR) shine 5V, kuma Kwararar Koma baya (IR) an iyakance shi zuwa matsakaicin 100 µA a wannan ƙarfin lantarki. An ƙididdige na'urar don Kewayon Zafin Aiki da Ajiya na -35°C zuwa +85°C, yana nuna dacewa ga masana'antu da faɗaɗa yanayin kasuwanci.

3. Tsarin Rarraba da Rarrabawa

Takardun bayanan ya bayyana a sarari cewa na'urorin "An Rarraba su don Ƙarfin Hasken." Wannan yana nuna tsarin rarraba samarwa inda ake rarraba raka'a bisa ga ƙimar fitar da haske da aka auna a daidaitaccen gwajin na'urar (yawanci 1 mA kamar yadda teburin halaye ya nuna). Wannan yana ba masu ƙira damar zaɓar sassa masu daidaitattun matakan haske don aikace-aikacensu, wanda yake da mahimmanci ga tsarin nuni da yawa ko samfuran da ke buƙatar takamaiman matakan haske. Duk da yake ba a yi cikakken bayani a cikin wannan ɓangaren ba, irin wannan rarrabuwar sau da yawa ya haɗa da rarrabuwa zuwa kewayon ƙarfi (misali, rumbun haske mai girma, rumbun ma'auni).

4. Bincike na Lanƙwaran Aiki

Takardun bayanan yana nuni zuwa "Lanƙwaran Halayen Lantarki / Na Gani na Al'ada." Ko da yake ba a ba da takamaiman zane-zane a cikin rubutun ba, daidaitattun lanƙwasa don irin waɗannan na'urori yawanci sun haɗa da:

• Dangantakar Ƙarfin Hasken da Kwararar Gaba (Lanƙwasa I-V):Wannan jadawalin yana nuna yadda fitar da haske ke ƙaruwa tare da kwararar tuƙi, yawanci a cikin yanayin ƙasa-layin layi, yana taimakawa wajen tantance mafi kyawun kwararar tuƙi don haske da inganci da ake so.
• Ƙarfin Wutar Lantarki na Gaba da Kwararar Gaba:Mahimmanci don ƙira na'urar iyakance kwarara da lissafin amfani da wutar lantarki.
• Dangantakar Ƙarfin Hasken da Yanayin Zafin Jiki:Yana nuna raguwar fitar da haske yayin da zafin haɗin gwiwa ya tashi, wanda yake da mahimmanci ga sarrafa zafin jiki a cikin aikace-aikacen zafi mai girma ko babban kwarara.
• Rarraba Bakan:Zanen ƙarfin dangi da tsawon raƙuman ruwa, yana kwatanta kololuwar tsawon raƙuman ruwa da mamayar tsawon raƙuman ruwa da faɗin bakan.

Waɗannan lanƙwasa suna da mahimmanci don fahimtar halayen na'urar a ƙarƙashin yanayin da ba na ma'auni ba da kuma don ƙirar tsarin ƙarfi.

5. Bayanin Injiniya, Kunshin, da Tsarin Ƙira

5.1 Girman Kunshin da Gina

Na'urar tana amfani da daidaitaccen kunshin nuni na LED mai lambobi biyu. An ba da duk ma'auni a cikin milimita tare da juzu'in gabaɗaya na ±0.25 mm sai dai idan an ƙayyade in ba haka ba. Bayanin "fuskar launin toka da sassa fari" yana nuna kunshin filastik mai watsewa, inda bangon launin toka ke ɗaukar hasken yanayi don inganta bambanci, kuma alamomin sassa fari suna taimakawa wajen watse hasken LED daidai.

5.2 Haɗin Ƙira da Na'urar Ciki

Nunin yana da tsarin ƙira 18. Yana daKatod Gama Garigine-gine, ma'ana an haɗa katod (tashoshi mara kyau) na LED na kowane lamba tare a ciki. Lamba 1 da Lamba 2 suna da ƙira na katod gama gari daban (ƙira 14 da 13, bi da bi). Wannan yana ba da damar haɗawa, inda ake haskaka lambobi biyu a madadin a babban mitar don haifar da tunanin cewa duka biyun suna kunne a lokaci guda, don haka rage adadin ƙira na direba da ake buƙata.

An fitar da anodes (tashoshi masu kyau) na kowane sashe (A zuwa G, da Decimal Point) zuwa ƙira ɗaya ga kowane lamba. Teburin tsarin ƙira yana ba da taswira daidai. Zanen na'urar ciki, wanda aka ambata a cikin takardun bayanan, zai nuna wannan tsari na katod gama gari, mai yuwuwar haɗawa ga lambobi biyu a zahiri.

6. Jagororin Solder, Haɗawa, da Sarrafawa

Mahimmin ma'auni na haɗawa da aka ƙayyade shine matsakaicin zafin solder da aka yarda: 260°C na matsakaicin tsawon lokaci na dakika 3, wanda aka auna a wani batu 1.6 mm (1/16 inci) ƙasa da matakin wurin zama na kunshin. Wannan shine daidaitaccen ƙayyadaddun yanayin sake kunnawa na solder don hana lalacewar zafi ga kunshin filastik da haɗin waya na ciki. Don solder na hannu, ana ba da shawarar ƙaramin zafi da gajeren lokacin tuntuɓar. Faɗin kewayon zafin ajiya (-35°C zuwa +85°C) yana nuna babu takamaiman buƙatun ajiya a ƙarƙashin yanayi na al'ada, amma ana ba da shawarar kariya daga danshi da wutar lantarki koyaushe don na'urorin semiconductor.

7. Shawarwari da La'akari na Ƙira na Aikace-aikace

7.1 Daidaitattun Na'urorin Lantarki na Aikace-aikace

Mafi yawan hanyar tuƙi don nuni mai lambobi biyu na katod gama gari kamar wannan shinehaɗawa. Microcontroller ko takamaiman direba IC zai:

1. Saita tsarin sashe don Lamba 1 akan ƙira na anode.
2. Ja katod gama gari don Lamba 1 zuwa ƙasa (ƙasa), kunna Lamba 1.
3. Jira ɗan gajeren lokaci (misali, 1-10 ms).
4. Kashe Lamba 1 ta hanyar saita katod ɗinsa sama.
5. Saita tsarin sashe don Lamba 2 akan ƙira na anode (sau da yawa ana amfani da ƙira iri ɗaya).
6. Ja katod gama gari don Lamba 2 zuwa ƙasa, kunna Lamba 2.
7. Maimaita zagayowar a mitar sama da 60 Hz don guje wa kyan gani.

Masu juriya na iyakance kwararalallai sun zama dolea cikin jerin tare da kowane ƙira na anode (ko kowane fitarwa na direban sashe) don saita kwararar gaba zuwa ƙimar aminci, yawanci tsakanin 5-20 mA dangane da hasken da ake buƙata da kasafin wutar lantarki. Ana iya ƙididdige ƙimar resistor ta amfani da R = (Vcc - Vf) / If, inda aka ɗauki Vf daga takardun bayanan (amfani da ƙimar matsakaici don ƙirar mafi munin yanayi).

7.2 La'akari na Ƙira

• Sarrafa Hasken:Ana iya sarrafa haske ta hanyar daidaita kwararar gaba (ta hanyar iyakance resistor) ko ta amfani da daidaitawar faɗin bugun jini (PWM) akan direbobin katod yayin haɗawa.
• Gudanar da Zafin Jiki:Lokacin aiki kusa da matsakaicin kwarara ko a cikin manyan yanayin zafi, tabbatar da isasshen iska. Dole ne a mutunta lanƙwasa rage ƙima don kwararar gaba.
• Kusurwar Dubawa:Fasalin "faɗin kusurwar dubawa" yana da amfani ga aikace-aikacen inda za a iya duba nunin daga wuraren da ba su da axis.
• Haɓaka Bambanci:Fuskar launin toka tana ba da kyakkyawan bambanci na asali. Don mafi kyawun aiki, yi la'akari da amfani da ma'auni mai tsaka-tsaki ko tace haɓaka bambanci akan nunin, musamman a cikin yanayin haske mai yawa.

8. Kwatancen Fasaha da Bambance-bambance

Idan aka kwatanta da tsofaffin fasahohi kamar daidaitattun LED ja na GaAsP (Gallium Arsenide Phosphide), fasahar AlInGaP da aka yi amfani da ita a nan tana ba da ingantaccen inganci mai haske sosai, yana haifar da mafi girma haske don irin wannan kwararar tuƙi. Hakanan yana ba da mafi kyawun kwanciyar hankali na zafin jiki da tsawon rayuwar aiki. Idan aka kwatanta da nunin lamba ɗaya, wannan naúrar lambobi biyu ta haɗa kai tana adana sararin allo, tana rage adadin abubuwan, kuma tana sauƙaƙa haɗawa. Tsarin katod gama gari sau da yawa ana fifita shi don haɗawa tare da tsarin tushen microcontroller, saboda yawanci yana ba da damar sauƙin tuƙi na nutsewar kwarara a gefen katod.

9. Tambayoyin da ake yawan yi (FAQ) Dangane da Ma'auni na Fasaha

Q: Menene bambanci tsakanin kololuwar tsawon raƙuman ruwa (650 nm) da mamayar tsawon raƙuman ruwa (639 nm)?

A: Kololuwar tsawon raƙuman ruwa ita ce tsawon raƙuman ruwa inda mafi girman ƙarfin wutar lantarki na fitarwa yake. Tsawon raƙuman mamaya shine tsawon raƙuman ruwa guda ɗaya na haske mai launi ɗaya wanda zai dace da launin da aka gani na LED. Bambancin ya samo asali ne saboda siffar bakan fitarwa na LED. Tsawon raƙuman mamaya ya fi dacewa don ƙayyadaddun launi.

Q: Shin zan iya tuƙa wannan nunin ba tare da haɗawa ba, tare da lambobi biyu a kan ci gaba?

A: Haka ne, amma yana buƙatar ninka ƙira na direba (anodes daban-daban ga kowane sashe na kowane lamba) kuma zai cinye kusan ninki biyu na kololuwar kwarara. Haɗawa shine daidaitaccen hanyar, ingantacciyar hanya.

Q: Matsakaicin ci gaba da kwarara shine 25 mA, amma yanayin gwaji don Vf shine 20 mA. Wanne ya kamata in yi amfani da shi don ƙira?

A: Don aiki mai dogon lokaci mai aminci, ƙira don kwarara a ko ƙasa da 20 mA a kowane sashe. Ƙimar 25 mA ita ce mafi girman cikakken; yin aiki a wannan iyaka yana rage tsawon rayuwa kuma yana buƙatar kulawa da zafin jiki. Daidaitaccen ƙirar kwarara shine 10-20 mA.

Q: Menene ma'anar "ja mai zurfi"?

A: "Ja mai zurfi" kalmar kasuwanci ce da ake amfani da ita sau da yawa don LED ja tare da tsawon raƙuman mamaya fiye da kusan 635 nm, yana samar da launin ja mai zurfi, mai cika ido idan aka kwatanta da daidaitattun LED "ja" waɗanda ƙila sun fi kusa da 620-630 nm.

10. Misalan Aikace-aikace na Aiki

Misali 1: Nunin Digital Multimeter:Lambobi biyu sun dace don nuna wurin goma da naúrar karatun ƙarfin lantarki ko juriya (tare da lamba na uku mai yuwuwar sarrafa ta wani nunin lamba ɗaya). Babban haske da bambanci suna tabbatar da karatu a cikin yanayin haske daban-daban a cikin gidan aiki.

Misali 2: Lokaci/Mai Ƙidaya na Masana'antu:Ana amfani dashi don nuna lokacin da ya wuce ko ƙidaya abubuwa akan layin samarwa. Faɗin kewayon zafin aiki yana sa ya dace da yanayin masana'anta. Ana iya sarrafa tuƙin haɗawa cikin sauƙi ta hanyar microcontroller mai arha.

Misali 3: Nunin Kayan Aikin Mabukaci:Kamar nunin saitin zafin jiki mai lambobi biyu akan hita ko saitin gudu akan fan. Ƙarancin buƙatun wutar lantarki yana dacewa da allunan sarrafa kayan aiki.

11. Gabatarwar 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 2.1-2.6V don wannan kayan AlInGaP), electrons daga yankin n-type da ramuka daga yankin p-type ana shigar da su a kan haɗin gwiwa. Lokacin da waɗannan masu ɗaukar caji suka sake haɗuwa a cikin yankin aiki na semiconductor, ana sakin makamashi a cikin nau'in photons (haske). Takamaiman tsawon raƙuman ruwa (launi) na haske an ƙaddara shi ta hanyar ƙarfin bandgap na kayan semiconductor, wanda ga AlInGaP an ƙera shi don samar da hasken ja. Sassan bakwai sune guntu-guntu na LED ɗaya ko sassan guntu da aka haɗa su don samar da daidaitattun ƙirar lambobi, ana sarrafa su ta hanyar ƙira na waje.

12. Trends na Fasaha da Mahallin

While discrete seven-segment LED displays remain vital for specific applications requiring simplicity, robustness, and direct readability, the broader trend in display technology is towards integrated dot-matrix displays (like OLED or TFT-LCD modules) and programmable smart displays. These offer greater flexibility in showing alphanumeric characters, symbols, and graphics. However, the advantages of seven-segment displays—extreme simplicity of interface, very low cost, high brightness, and excellent readability from a distance—ensure their continued use in instrumentation, industrial controls, appliances, and as status indicators. The shift within the segment itself is towards higher efficiency materials (like AlInGaP replacing older GaAsP), lower power consumption, smaller packages, and surface-mount versions for automated assembly.