Manufacturers Remain Divided About LED Substrate Technology

Leading LED chip industry experts had very different perspectives on GaN LED substrates at 2015 LED Executive Summit hosted by SEMI at TILS 2015 in TWTC Nangang Exhibition Hall, Taipei, Taiwan recently.
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The selling price of Sapphire substrates to be up US$30 in 4Q10 due to Supply disconnected

Following the contuse lacing of Sapphire substrates, some LED manufactures thought its price would be over US$30 in 4Q10, so they start making purchase on Sapphire substrates with cash. In Q1 of 2010, 2-inch sapphire substrates offering price was not enough US$15, but up straightly to US$25-30 in Q 3, and recently has been to US$30-35. To prevent idle production lines, some LED chipmakers had to begun price negotiation for Q4, while Some LED chipmakers had halted production lines and moved back delivery of MOCVD machines.
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Crystal IS and Japan's Asahi Kasei Join Up to Develop LED Substrates

Crystal IS Inc., a developer of ultraviolet light emitting diodes (UVC LEDs), has signed a joint development agreement with Japan's Asahi Kasei Corp.  Asahi Kasei has also invested $2 million in Crystal IS. Under the agreement, the two companies will create a manufacturing process for large diameter aluminum nitride (AlN) substrates based on Crystal IS proprietary intellectual property.
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Dow Corning Electronics Announces New Silicone Encapsulant for Overmolding Process

Today Dow Corning Corporation’s Electronics group introduced its newest silicone encapsulant, Dow Corning ®OE-6636, designed for overmolding (compression molding) and dispensing processes. The product provides for a high refractive index (RI) of 1.54 which enables better light output (see Appendix 1, below), has a low moisture uptake, improves thermal aging  and light resistance, and possesses better adhesion to typical substrate for LED packages such as Poly Phthal Amid.
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Osram Opto Semiconductors is expanding its Oslon Black family for the infrared range with six new automotive IREDs. The 850 nm versions are intended for exterior applications such as night vision, pedestrian protection, pre-field recognition a... READ MORE

Lumileds introduced the LUXEON CZ Color Line, a product line optimized to deliver maximum punch. “The LUXEON CZ features up to 48% higher punch than any other undomed color LED,” said Jennifer Holland, Product Line Direct... READ MORE