簡評:
1. 政府做了正確決定
2. 業者說了屁話:
"以250瓦為例，光通量1萬8千流明左右，但如果採用LED，同樣是250瓦，光通量卻只有3000流明，亮度只有高壓納燈的1/6"
這句話顯示了說話者的不專業--他們以為路燈還是要用聖誕燈來做嗎?
3. 如果業者表達的是目前台灣技術的實情,那麼所有投資者都不用寄望台灣的LED產業有任何競爭力了
4. 但事實上台灣的HP-LED(high power LED)還做得不差--所以只有一種可能性:這些業者在說謊
5. 鴻海以降,光寶,台達電...etc.,各大電子公司都希望能切入大陸的LED路燈市場;大家也確實碰到散熱問題.所以能有效徹底地解決散熱問題,誰就能掌握未來的LED產業.
6. 我們GreenCore明年就要好好切入這塊--現在做一點都不晚,對照明市場來說,無論規模如何,大家的站在同樣的起跑點.GC有成功的機會!夥伴們加油!
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2012年告別白熾燈？ LED業者：還早！
政府將推動在2012年底前全面汰換白熾燈泡，讓20日台股中的LED（發光二極體）族群相對抗跌，不過，對於經濟部的美意，業者卻認為這個時間表似乎定的太早，因為LED目前散熱以及光衰的問題，還沒有辦法完全克服，如果交通路燈全面用LED來取代，成本恐怕也會高出好幾倍，相當不划算。
七彩的省電燈光，加上無污染的環保特性，讓LED的前景一片光明，經濟部能源局甚至喊出2012年底前要汰換白熾燈泡，全面改用LED照明，但對於這個時間表，業者卻認為言之過早。台達電代理發言人范植祿表示，LED照明以目前的技術與成本而言，大部分都是使用在交通燈號上，它的熱的問題沒有辦法解決，反映在成本各方面也都太高，比較沒辦法直接取代照明使用。LED成本貴，要全面取代白熾燈難度高，將兩種燈泡比一比，一般的高壓納燈使用在路燈上，以250瓦為例，光通量1萬8千流明左右，但如果採用LED，同樣是250瓦，光通量卻只有3000流明，亮度只有高壓納燈的1/6，此外，LED散熱以及嚴重的光衰情況，也都是有待克服的難題。照明業者王健全也表示，LED的光衰非常厲害，這個光衰的比例，並不是一個平穩的比例，是一個相對、非常高的比例，在使用上來講，其實光衰已經衰減到50%以上的話，已經不達到使用壽命，而電池的部分是不是能夠達到4萬小時、10萬小時，又是另外一個迷思。雖然LED全面上路還需要一段時間，不過，受到消息激勵，相關族群還是演出慶祝行情，華上跟宏齊更是強攻漲停，尤其下半年已經有不少筆記型電腦採用LED作為背光源，取代含汞的冷陰極管，預期明年還會成長到四成，另一方面，LCDTV的背光源運用也愈來愈普及，讓台達電、晶電、東貝等業者前仆後繼投入，就是希望未來商機引爆時能夠分一杯羹。
2007年11月21日 星期三
2007年11月19日 星期一
Lumileds K2 with TFFC technology operates at 1 A
A new chip technology and improvements to the K2 package have enabled Lumileds to introduce a power LED that is binned and tested for standard operation at 1000 mA.
Philips Lumileds has announced its new cool-white Luxeon K2 with TFFC LED chip technology, which it describes as "the industry’s first 1A LED".
The company says that the new cool-white device is available from Future Lighting Solutions, and that it is preparing for volume production of neutral-white and warm-white to be followed by royal blue, blue, cyan and green.
The new product takes the existing K2 package and introduces Thin Film Flip Chip (TFFC) technology, which as already been made available in the Rebel package. The chip size is 1x1 mm2. TFFC technology contributes to overall light output improvement, optical performance and improved thermal capability.
Explaining the tag of "industry's first 1 A LED", Lumileds says that the Luxeon K2 with TFFC is the only LED designed, binned and tested for standard operation at 1000 mA, and capable of being driven at 1500 mA.
Light output performance from a Luxeon K2 with TFFC part binned and tested for 160 lumens minimum and 1A drive current can easily exceed 220 lumens at higher drive currents. Lumileds says that Luxeon K2 with TFFC "leads all LEDs in real-world applications" and is designed and manufactured to operate reliably and effectively in the harshest environments.
Packaging advancements have improved the thermal resistance to 5.5 °C/W, allowing the LED to be driven at higher currents and lowering thermal management engineering efforts and costs.
In its press release, Lumileds claims that products from other LED makers that are designed to operate at 350 mA cannot be driven reliably at higher currents without sacrificing lumen maintenance or causing junction temperature to exceed published maximums. "None of the other LEDs can be operated at 1A for extended periods of time," says the Lumileds press release. "In fact, even when datasheets indicate typical values at higher drive currents, they are not achievable in actual applications."
“Customers are already making the move to 1000 mA drive currents and higher to take advantage of higher light output and improved efficacies,” said Erik Milz, Product Manager at Philips Lumileds. “Incorporating TFFC technology and package improvements gives us the best LED for the most demanding applications and environments such as automotive, signaling, general lighting and architectural applications. Using a single chip allows for the smallest optical source size making it easier to design optics such as reflectors, diffusers and lenses that are essential for most applications."
The advantages of a high drive-current rating allows designers to increase current without increasing thermal management size or cost to the same degree. For applications where maximum light and robustness are required while still delivering improved efficiency, Lumileds says that Luxeon K2 with TFFC can be implemented to engineer the most cost-effective solutions that consider all costs including the thermal management system, drive electronics, optics and LED count.
Philips Lumileds has announced its new cool-white Luxeon K2 with TFFC LED chip technology, which it describes as "the industry’s first 1A LED".
The company says that the new cool-white device is available from Future Lighting Solutions, and that it is preparing for volume production of neutral-white and warm-white to be followed by royal blue, blue, cyan and green.
The new product takes the existing K2 package and introduces Thin Film Flip Chip (TFFC) technology, which as already been made available in the Rebel package. The chip size is 1x1 mm2. TFFC technology contributes to overall light output improvement, optical performance and improved thermal capability.
Explaining the tag of "industry's first 1 A LED", Lumileds says that the Luxeon K2 with TFFC is the only LED designed, binned and tested for standard operation at 1000 mA, and capable of being driven at 1500 mA.
Light output performance from a Luxeon K2 with TFFC part binned and tested for 160 lumens minimum and 1A drive current can easily exceed 220 lumens at higher drive currents. Lumileds says that Luxeon K2 with TFFC "leads all LEDs in real-world applications" and is designed and manufactured to operate reliably and effectively in the harshest environments.
Packaging advancements have improved the thermal resistance to 5.5 °C/W, allowing the LED to be driven at higher currents and lowering thermal management engineering efforts and costs.
In its press release, Lumileds claims that products from other LED makers that are designed to operate at 350 mA cannot be driven reliably at higher currents without sacrificing lumen maintenance or causing junction temperature to exceed published maximums. "None of the other LEDs can be operated at 1A for extended periods of time," says the Lumileds press release. "In fact, even when datasheets indicate typical values at higher drive currents, they are not achievable in actual applications."
“Customers are already making the move to 1000 mA drive currents and higher to take advantage of higher light output and improved efficacies,” said Erik Milz, Product Manager at Philips Lumileds. “Incorporating TFFC technology and package improvements gives us the best LED for the most demanding applications and environments such as automotive, signaling, general lighting and architectural applications. Using a single chip allows for the smallest optical source size making it easier to design optics such as reflectors, diffusers and lenses that are essential for most applications."
The advantages of a high drive-current rating allows designers to increase current without increasing thermal management size or cost to the same degree. For applications where maximum light and robustness are required while still delivering improved efficiency, Lumileds says that Luxeon K2 with TFFC can be implemented to engineer the most cost-effective solutions that consider all costs including the thermal management system, drive electronics, optics and LED count.
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