X'inhu l-proċess biex isiru dwal ta 'strixxi LED?
What is the LED production process
What is the LED chip manufacturing process?
Actually epitaxial wafer production process is very complex, in the exhibition after the epitaxial wafer, began to LED epitaxial wafer do next electrode (P, N), and then began to use laser machine for cutting the LED epitaxial wafer (previously LED epitaxial wafer mainly use diamond cutting knife), made into a chip, in different locations in the wafer on extraction of nine points test parameters.
- Mainly test the voltage, wavelength and brightness of the wafers that can meet the normal shipping standard parameters and then proceed with the next operation. If the nine-point test does not meet the relevant requirements, the wafers will be put aside for another processing.
2, wafer cutting into chips, % visual inspection (VI/VC), the operator should use magnification microscope 30 times for visual inspection.
3, then use automatic classifier according to different voltage, wavelength, brightness prediction parameters of the chip to fully automatic selection, testing and classification. - Fl-aħħarnett, check (VC) and label the LED chip. The chip area shall be in the center of the blue film, and there shall be at most chips on the blue film, but the number of chips on each blue film shall not be less than chips, and the chip type, lot number, quantity and photoelectric measurement statistics shall be recorded on the label attached to the back of the waxy paper. The chips on the blue film will undergo the final visual inspection according to the same standards as the first visual inspection to ensure that the chips are neatly arranged and of good quality. This makes LED chips (collectively known as squares on the market at present).
In the process of LED chip production, the chip with some defects or electrode wear, sorted out, these are the loose crystals behind, at this time in the blue film there are some do not meet the normal shipping requirements of the chip, it will naturally become a side piece or hair, etc.
Talked about in different locations on the wafer extraction parameters testing, nine points do to do not conform to the requirements of the wafer for additional processing, these cannot be directly used to make the LED wafer square piece, also won’t do any sorting, sold directly to customers, which is currently on the market the LED wafer (but also have good things in your wafer, such as the party).
Dwal tan-neon LED
Mill-miġja tad-dwal tan-neon, after a hundred years of unfailing. It is a special low pressure cold cathode glow discharge electric light source, u hija differenti minn oħrajn bħal lampa fluworexxenti, fanal tas-sodju bi pressjoni għolja, fanal tal-alid tal-metall, fanal tal-merkurju, incandescent lamp and other arc lamp. Neon lights are produced by a cold cathode glow discharge under a high voltage field of inert gas filled in a glass tube. The color of the neon lamp is determined by the spectral characteristics of the inert gas. Fluorescent neon lights are filled with argon and mercury, filwaqt li d-dwal tan-neon jarmu dawl blu u isfar. These two types of neon lights are generated by excited radiation from the atoms of the working gas in the tube. Compared with other electric light sources, dwal tan-neon għandhom il-karatteristiċi li ġejjin:
L-ewwel, effiċjenza għolja
Id-dwal tan-neon jiddependu fuq l-elettrodi fiż-żewġt itruf tad-dawl fil-kamp ta 'vultaġġ għoli se jkun gass inert fit-tubu, huwa differenti mis-sors tad-dawl ordinarju għandu jaħarqu wajer tat-tungstenu għal temperatura għolja għad-dawl, li jirriżulta f'ammont kbir ta 'enerġija elettrika fil-forma ta' enerġija tas-sħana hija kkunsmata, għalhekk, bl-istess ammont ta 'enerġija elettrika, neon għandu luminożità ogħla.
Tnejn, it-temperatura hija baxxa, l-użu mhuwiex ristrett mill-klima
Bozza tan-neon minħabba l-proprjetà tal-katodu kiesaħ tagħha, it-temperatura tat-tubu hija taħt is-60 ° C meta taħdem, so it can be placed in the open air in sunlight and rain or in the body.
Low energy consumption
In the era of continuous technological innovation, the manufacturing technology of neon lights and the technical level of related parts are constantly improving. The application of new electrodes and electronic transformers has greatly reduced the power consumption of neon lights, from 56 watts per meter of lamp to 12 watts per meter of lamp.
Four, ħajja twila
Neon lights in continuous work under the condition of continuous electricity, life of more than 10,000 sigħat, this advantage is difficult to achieve any other electric light source.
Five, flexible production, diverse colors
Neon is made of glass tubes that can be fired and bent into any shape with great flexibility. Billi tagħżel tipi differenti ta 'tubi u timlahom b'gassijiet inerti differenti, in-neon jista 'jipproduċi ikkulurit, dawl b'ħafna kuluri.
Sitt, dinamiku, effett tajjeb, ekonomiku u prattiku
Skrin tad-dawl tan-neon mit-tubu tad-dawl stabbli u l-kompożizzjoni tat-tubu tal-iskannjar tad-dawl dinamiku, jista 'jiġi ssettjat biex jaqbżu l-iskannjar, skan gradwali, kulur imħallat bidla seba kulur scan. Tubu tal-iskannjar minn mgħammar b'kontroll tal-iskaner tal-ipprogrammar tal-mikrokompjuter, tubu tal-iskannjar skont id-dawl tal-programm ipprogrammat jew mitfi, li jiffurmaw fluss ta 'stampi, bħal qawsalla fis-sema, bħall-Mixja tal-Ħalib, aktar bħal dinja tal-ħolm, affaxxinanti, indimentikabbli. Għalhekk, in-neon huwa forma ta' reklamar b'inqas investiment, effett qawwi u utilità ekonomika
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