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re: Toshiba to commence volume production of white LEDs
krisi   8/1/2012 11:58:53 PM
thank you @docdivakar, this is very helpful...would one try to integrate some CMOS circuits if the LED is built on silicon substrates? Kris

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re: Toshiba to commence volume production of white LEDs
docdivakar   8/1/2012 10:31:29 PM
Kris, it has been mostly GaN on Sapphire so far because the epitaxy buffer layer AlN and the active layer InGaN have so far been processed mostly on Sapphire. That is not the only substrate of choice, there is bulk GaN, SiC (early Cree versions), Si and composites. If yield issues are proven, it makes sense to move away from Sapphire. Ideally, the LED industry has to work toward vertical designs with backside contact which can result in smaller chips. It is not clear if moving to Si substrate achieves that. It is ironic, Toshiba on one end announced cut in its NAND Flash production by 30%. MP Divakar

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re: Toshiba to commence volume production of white LEDs
krisi   8/1/2012 6:59:45 PM
Why do you need silicon substrate? GaN substrate would not work? Kris

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re: Toshiba to commence volume production of white LEDs
geekmaster   7/31/2012 8:17:30 PM
LEDs on 200mm GaN Silicon substrate? WOW!

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