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A, LED chip:
LED chips for LED the main raw material, LED to rely mainly on wafers.
Second, the LED chips
Mainly arsenic (AS) aluminum (AL) gallium (Ga) indium (IN) phosphorus (P) nitrogen (N) strontium (Si) this several elements of several kinds of composition.
Third, the LED chips
1, according to shine brightness points:
A, general brightness: R, H, G, Y, E, etc
B, high brightness VG: VY, SR, etc
C, brightness: UG, UR, UYS UY, etc. URF, UE
D, not visible (infrared) : R, SIR, VIR, HIR
E, infrared receiver: PT
F, phototubes: PD
2, according to the element points:
A, dual chips (p, gallium) : H, G, etc
B, triple phosphorus, gallium arsenide wafers (arsenic) : SR, UR, HR, etc
C, four yuan wafer (p, aluminum, gallium, indium) : URF, SRF, HRF VY, UY, UYS, HY, wash., UE, and UG
Four, LED chip characteristics (see table below introduction),
LED chips type emitting light colors elements wavelength (nm) wafer model emitting light colors elements wavelength (nm)
LnGaN/SBI blue sic 430 HY ultra bright yellow AlGalnP 595
SBK lighter blue lnGaN/sic 468 SE GaoLiangJie color GaAsP/GaP 610
DBK Gan/lighter blue GaunN 470 HE ultra bright orange AlGalnP 620
SGL green lnGaN/sic 502 UE brightest orange AlGalnP 620
A DGL relatively bright green LnGaN GaN/light red URF 505 AlGalnP 630 the
A bright green DGM lnGaN 523 E GaAsP GaP635 / orange
PG pure green, red GAaAsP 665 555 R GaP
SG standard green GaP 560 SR is bright red GaA/AS 660
G green GaP 565 HR ultra bright red GaAlAs 660
VG relatively bright green was the most bright red UR 565 GaAlAs 660
UG most bright green AIGalnP 574 H, GaP 697
Y GaAsP yellow GaP585 / GaAlAs 850 HIR infrared ray
A bright yellow VY GaAsP/GaP GaAlAs infrared 585 SIR 880
UYS most bright yellow AlGalnP 587 VIR infrared GaAlAs 940
The bright yellow UY AlGalnP 595 IR infrared GaAs 940
Five, the matters needing attention and other
1, LED chipmakers name: A, B light lei (ED), the nl FPD detecting C, ding yuan (toshimi koitabashi), (D) E, han AOC light (HL) F G, wide AXT, grain
2, LED chips in production process should be paid attention to in electrostatic shielding.
Six, added
The LED display panel (LED) : LED emitting diode is one
The abbreviations, light emitting diode, referred to as leds. It is a kind of control through the display of semiconductor emitting diode, used to display text, graphics, animation, market, image and video, video signal etc all kinds of information of the display screen.
The LED display screen and video display into the text by LED matrix blocks. Graphic display can be displayed with computer, English, Chinese text and graphics, Video screen using microcomputer control, graphic, image, with real-time, synchronization, clear information dissemination way play all kinds of information, but also shows 2d, 3d animation, videos, TV, VCD programs and live. The LED display screen display bright colors, stereo sense is strong, such as oil, such as films, widely applied in railway stations, docks and airports, bazaar, hospitals, hotels, Banks, securities market, market, and construction management of industrial enterprises, Christie's and other public places.
Its advantage: high brightness, working voltage, low consumption, miniaturization, easy and integrated circuit, drive is simple, long life, impact resistance, steady performance.
Seven generator, MOCVD, market investigation
Currently, there are two main MOCVD equipment manufacturer home:
1 AIXTRON Germany (UK THOMAS SWAN company has been AIXTRON company acquisitions) accumulative total sales 1000 sets
April 24, 2007, AIXTRON and Can Formosa (Taiwan), aureole Epitaxy AIXTRON announced the DiYiQianTai CCS
30x2 inches) in MOCVD (Can circle in the factory, has strengthened Can round the squad AIXTRON equipment (including several AIX 2,400/2600G3 HT)
The latest model 2800G4 AIX: AlGaInP MOCVD. -
Two American VEECO company (m&a EMCORE America).
One AIXTRON company (including THOMAS SWAN company) for about 60-70% of the international market share, and VEECO company of 30-40%.