Feb 12, 2020
The Global LED Backlight Source Market report present framework on market potential for each geological district in light of the growth...
LED Backlight Source
https://teletype.in/@industryandresearch/LX3MZCvq
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The Global LED Backlight Source Market report present framework on market potential for each geological district in light of the growth...
LED Backlight Source
https://teletype.in/@industryandresearch/LX3MZCvq
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LED backlight source faceplate attempts to make the market of cope display unit of the desk popular
Utilize LED peculiar ultrathin and electricity-saving characteristic, use LED backlight source faceplate Liquid crystal screen Israel very fast speed a dark horse. Though the market of cope display unit of the desk has been already quite ripe, faceplate factory and brand manufacturer cooperate development has ultrathin or ultra electric-saving that waits for this kind to specialize distinct products, attempt to make this market popular once again. The faceplate factory uses LED backlight source in the liquid crystal faceplate such as 18.5 " W, 19" W, 22" W, and 23 " W/24" In major size such as W. Though the infiltration rate of LED backlight source only accounts for 1.4% in the third quarter of 2009, factory thinks the faceplate, if manufacturer adopts the brand under the situation of LED backlight source faceplate more actively, predict after the third quarter by 2010 of 2 years, the infiltration rate of LED backlight source in the liquid crystal display faceplate will reach 22%.
See the brand, introduce LED display unit dimensional range in a poor light including 18.5 in the third quarter of 2009 like Samsung, Dell, LG, Acer, Lenovo, BenQ and AOC,etc. " W To 24 " W. It is estimated in first quarter by 2010, the manufacturer will put out 20 successively too " W, 23.6 " W and 27 " W equidimension LED display unit products in a poor light. In addition, like 26 " The size of W, this kind of desk cope display unit faceplate, can be used on small-scaler LCD TV, it is likewise attractive that LED carries the grain side board. VIZIO puts out 18.5 " W and 23 " W adopts the LCD TV of LED backlight source desk cope display unit faceplate, it is expected that more brand manufacturers will follow up in 2010 too.
Release LED backlight source to drive IC in wide roc science and technology
The news on April 24, wide roc science and technology (ADDtek Corp.) Introducing can drive 80 LEDs, efficiency to be up to 93% of the eight -channel, continuous current LED backlight source and drive IC— — A723. From 4.5V to the wide input voltage range of 25V, can cooperate with various power and drive 18 to 80 LEDs to produce the even luminance. Products & mdash of the homologous series; — A706 of the six -channel and A707 of the three -channel, have already generally used in South Korea and Taiwan in LED of Netbook PC and Notebook PC in a poor light drive. A723 focuses on relatively LED application in a poor light of jumbo size Notebook PC and Monitor.
Series A706/A707/A723 of wide roc science and technology are made up of boost driver core of a built-in high voltage switch and multi channel constant-current source, and tickle the mechanism and impel and drive IC to work in the optimum efficiency mode at any time with the voltage, not only can remedy LED straight forward voltage (VF) Difference,it is be getting straight more forward because in conformity with LED last change, real-time steering output voltage of temperature voltage, make, drive IC work, maintain at the high efficiency. Presumed electric current size multi channel constant-current source is designed by the department resistance beyond the user, can make the electric current between each LED bunch unanimous, dispel LED luminance difference between bunch, it is one that can offer the extremely homogeneous backlight source solution of the luminance. This serial IC can use the wave-wide regulation of the pulse (PWM) Way go on adjust luminance,transfer by light freqency within the range of 100Hz 25KHz when,can which offer better for linear scale, can reach and exceed adjusting luminance of 256 steps even more. The switch mechanism of mistiming, stagger feed-through and turn-off time of the electric current of every -channel, can reduce PWM interference produced of adjusting luminance.
There is technical multiple protection mechanism of wide roc's scientific and technical innovation patent in A706/A707/A723 series IC: LED open a way protective circuit can make other to take place LED open a way signal channel of the state keep normal operation, prevent the backlight source from totally going out; Over voltage protective circuit can make, drive IC and peripheral assembly avoid over voltage damage, and can presume that presses and protects some by oneself according to the withstand voltage of peripheral assembly by the user, and then reduce the cost capacitive in output stage; The excess current protective circuit can protect and drive IC and peripheral assembly to avoid the excess current to damage; The overheated protective circuit will touch off the overheated protection mechanism and shut off the whole driving circuit in order to avoid burning when LED short out spoiled one is counted too many, after dropping in temperature, will activate and combine output current again automatically; Other protective circuit such as Under Voltage Lock Out are protected (UVLO) Wait, stability and safety when can improve operation even more.