Light Emitting Devices, organic and novel Message Board

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Technology Stocks : Light Emitting Devices, organic and novel

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To: John Finley who started this subject	5/10/2001 1:44:24 PM
From: kinkblot	Read Replies (1) of 330

Where's the rub? IBM's new technique for aligning liquid crystals: research.ibm.com The ion beam surface treatment ("atoms are shot by an ion gun at an angle that push aside many of the surface carbon atoms") is not in itself new, but the application is. I assume we're talking about "knock-on" effects, i.e. sputtering as opposed to implantation, along the lines of ion etching. Whereas the old rubbing technique is like a crude form of micromachining, the new technique is more of a statistical process in that the surface structure will reflect angular variations in the ion-atom interactions. The claim that "the new method is the first to replace a process discovered 95 years ago" is dubious. Philips has several issued patents covering methods to replace the rubbing process: the "Method for fabricating a liquid crystal cell" US6,191,836 as well as US5,262,882 and US4,496,220 for starters. But, hey, those were not invented at IBM! rub-a-grub WT

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