Originally Posted by eat meat
you have seen 1 new TI chip come out and its not even 1280x800(its 1140x912)and pico making for a few pocket pjs. wheres it gona go?Whos leds are you gonna use?the strongest led are used in the expensive 1080p leds (the pt120 led is 5 years old now).the 1080p led market is packed and even the huge (30lb avg)led projectors are only doing 700-1000 lumens.
would you buy the new 500 lumen q3 qumi for 700-800$.the 1000lumen samsung SP-F10M cost 1350$ didnt sell and seems to have a lot of refurbs for sale(problems?).http://www.google.com/products/catal...wAA#scoring=tp
I just dont see whos gona make it for what market.There are no led HT pjs under 10000$ after all right?
I also looked around for about brighter/cheaper led chips but I forgot who said what?? but I do remember somebody said OSRAM??
I asked and they said bigger wafers means per chip prices going lower.
Oh and they are also gearing up for 8 inch wafers!!http://www.ecnmag.com/news/2012/01/O...ps-on-Silicon/
Thursday, January 12, 2012
Researchers at OSRAM Opto Semiconductors have succeeded in manufacturing high-performance blue and white LED prototypes in which the light-emitting gallium-nitride layers are grown on silicon wafers with a diameter of 150 millimeters (approx. 6 inches). The silicon wafers replace the sapphire substrates commonly used in the industry up to now, with no loss of quality. Already in the pilot stage, the new LED chips are being tested under practical conditions, meaning that the first LEDs on silicon from OSRAM Opto Semiconductors could hit the market in as little as two years.
Advantages of silicon
This is a pioneering development for several reasons. Silicon is an attractive and low-cost option for the lighting markets of the future. Due to its already widespread use in the semiconductor industry, the availability of large wafer diameters and its very good thermal properties, silicon is an attractive and low cost option for large-volume fabrication. Quality and performance data on the fabricated LED silicon chips match those of sapphire-based chips: the blue UX:3 chips in OSRAM's standard Golden Dragon Plus package achieve a record brightness of 634 mW at 3.15 volts, equivalent to 58 percent efficiency.
These are outstanding values for state-of-the-art 1 mm² chips driven at 350 mA. In combination with a conventional phosphor converter in a standard housing -- in other words as white LEDs -- these prototypes correspond to 140 lm at 350 mA with an efficiency of 127 lm/W at 4500K.
For these LEDs to become widely established in lighting, the component cost must come down significantly while maintaining the same level of quality and performance, says Dr. Peter Stauss, project manager at OSRAM Opto Semiconductors. We are developing new methods along the entire technology chain for this purpose, from chip technology to production processes and housing technology. Mathematically speaking, it is already possible today to fabricate over 17,000 LED chips of one square millimeter in size on a 150 millimeter (6 inch) wafer. Larger silicon wafers could increase productivity even more; researchers have already demonstrated the first structures on 200 millimeter substrates (approx. 8 inches).
OSRAM Opto Semiconductors has acquired comprehensive expertise over the last 30 years in the process of artificial crystal growth (epitaxy), the foundation for this milestone in the development of new manufacturing technologies. The German Federal Ministry of Education and Research funds these activities as part of its GaNonSi project network. Our investments in years of research are paying off, because we have succeeded in optimizing the quality of the gallium-nitride layers on the silicon substrates to the point where efficiency and brightness have reached competitive market levels, noted Dr. Stauss. Stress tests we've already conducted demonstrate the high quality and durability of the LEDs, two of our traditional hallmarks.