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tfungus
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LED not OLED
tfungus   6/25/2014 1:45:16 PM
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"creating GaN LEDs on glass substrate, which could not only cut manufacturing costs but also help to develop OLED light panels."  Author should edit this since GaN is inherently NOT OLED.  This paper only demonstrated GaN LED on a silicon wafer with an SiO2 layer.  Nice academic paper but the prospects of fabrication on organic substrate is just another academic buzzword funding pitch.  

docdivakar
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Re: LED not OLED
docdivakar   6/27/2014 4:40:59 PM
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@tfungus You are quite right, OLEDs have organometallics in the emissive layer, GaN on glass substrate does not qualify as one.

The author is quite correct in that the current processing technologies using MOCVD for InGaN on either bulk GaN or SiC or Sapphire or Si substrates is some what limited to 6inch max wafer size (bulk GaN is even lower). This invariably leads to higher cost. And the cost reduction curve will most likely NOT follow the CMOS models if and when larger substrates become viable.

MP Divakar

chanj0
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Estimated cost
chanj0   6/26/2014 1:44:26 AM
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The technology sounds promising. Question is how much compared to the current cost of OLED. Another challenge is the life time of the glass.

docdivakar
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Re: Estimated cost
docdivakar   6/27/2014 4:52:36 PM
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@chanj0 I am some what hopeful about costs coming down IF roll-to-roll processing can be implemented. But I agree with you that reliability of devices on flexible glass substrates needs to be proven first. Therein, ITO on flexible glass substrates has already been proven and Corning offers solution today for manufacturing. This can be leveraged for GaN LEDs.

There is always the option to go to rigid glass substrates in panellized form (where reliability has already been proven for 2.5D interposers) but this may be not as attractive from a cost perspective.

MP Divakar

Kinnar
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Great Remarkable Research Indeed
Kinnar   6/26/2014 1:30:08 PM
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This is really a great remarkable research, this will really make the read LED Televisions/Video Monitors possible. We see and call LED TV and LED Monitor are all Liquid Crystal Displays (LCDs) with LEDs being used as back light. Chana is pioneer and leading manufacturer of Actual LED based large scale displays. But still today I have not heard any leading manufacturers involved in Actual LED based Video Dispalys. With this research of growing RGB LEDs on the Glass subtract will really make the Actual LED based displays more feasible.

elctrnx_lyf
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Re: Great Remarkable Research Indeed
elctrnx_lyf   6/26/2014 3:14:10 PM
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Japan is always front runner in developing technologies for the displays and they seem to have never ending passion for displays,

Kinnar
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Re: Great Remarkable Research Indeed
Kinnar   6/27/2014 1:35:25 AM
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Japan is a way ahead in many technologies, like mobile telephony, displays, audio and automobile. It is because of technologies development and documentation in their own local language it takes time to reach to the world.



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