Ink-jet printing of light-emitting polymers onto a thin film has been demonstrated by a Princeton group (James Sturm, 609-258-5610), bringing about a new way to fabricate a light-emitting diode (LED) made of polymers. An LED is typically built by surrounding a semiconducting material with two electrodes. When an electron from one electrode and a hole from the other meet in the semiconductor, they can annihilate each other and release the energy as light. LEDs in which the semiconductor materials are polymers instead of inorganic materials such as gallium phosphide would be cheaper and easier to manufacture. To make polymer LEDs, the Princeton researchers replaced the ink cartridges of a conventional ink-jet printer with a polymer solution containing the semiconducting polymer polyvinylcarbazol (PVK) and a light-emitting dye dissolved in a chloroform solvent. The researchers printed this solution onto a thin polyester film coated with indium tin oxide (ITO), which served as one of the electrodes. Over the polymer layer they deposited a metal film, which served as the other electrode. With this technique, they produced LEDs emitting green light. In separate experiments, they used the ink-jet printer to make dot patterns of PVK mixed with either red, green, or blue dyes on the ITO-coated polyester film, although they have not yet used these patterned films to make LEDs. (T.R. Hebner et al., Applied Physics Letters, 2 February 1998.)
...and its failed attempt to put the.GIF cat back into the bag, out of which the.GIF cat clawwed (for many years) before Unisys even knew they owned the Genie in the bottle.
Look up Adverse Possession in a real estate reference book. If I was Prodigy's defending lawyer, I'd certainly make reference to adverse possession.....Mike
Yes. And while there are a lot of companies working on Light Emitting Polymers (LEPs) and other electroluminescent displays, one company is working on Organic Light Emitting Displays (OLEDS) in both rigid and flexible form.
Universal Display Corp. appears to have the lead in numerous developments.
This thing didn't happen yesterday. Yes, they launched their first satellite the other day. But at my first scan nobody here has a clue. I've followed Sirius and XMSR for about a year. Both are real. It's all about receivers in cars, not deskjockeys like you and your MP3s that yearn to be free. It's about driving for 15 hours and having your favorite radio format whether you're in Billings Montana or BooFoo Florida. otoh, this reactionary space is entertaining, if not informative.....M
Slashdot Mirror
The Panel
Furthermore, from 1998:
Ink-jet printing of light-emitting polymers
Ink-jet printing of light-emitting polymers onto a thin film has been demonstrated by a Princeton group (James Sturm, 609-258-5610), bringing about a new way to fabricate a light-emitting diode (LED) made of polymers. An LED is typically built by surrounding a semiconducting material with two electrodes. When an electron from one electrode and a hole from the other meet in the semiconductor, they can annihilate each other and release the energy as light. LEDs in which the semiconductor materials are polymers instead of inorganic materials such as gallium phosphide would be cheaper and easier to manufacture. To make polymer LEDs, the Princeton researchers replaced the ink cartridges of a conventional ink-jet printer with a polymer solution containing the semiconducting polymer polyvinylcarbazol (PVK) and a light-emitting dye dissolved in a chloroform solvent. The researchers printed this solution onto a thin polyester film coated with indium tin oxide (ITO), which served as one of the electrodes. Over the polymer layer they deposited a metal film, which served as the other electrode. With this technique, they produced LEDs emitting green light. In separate experiments, they used the ink-jet printer to make dot patterns of PVK mixed with either red, green, or blue dyes on the ITO-coated polyester film, although they have not yet used these patterned films to make LEDs. (T.R. Hebner et al., Applied Physics Letters, 2 February 1998.)
Update 358o .pdf
11 Feb 98 http://www.ee.princeton.edu/~sturmlab/pdf/apl/ijp
http://www.indetech.com/productfunction.html
IT could have a fun aspect, parts would fit in a duffelbag, etc, etc. Shop and compare!
...and its failed attempt to put the .GIF cat back into the bag, out of which the .GIF cat clawwed (for many years) before Unisys even knew they owned the Genie in the bottle.
Look up Adverse Possession in a real estate reference book. If I was Prodigy's defending lawyer, I'd certainly make reference to adverse possession. ....Mike
Yes. And while there are a lot of companies working on Light Emitting Polymers (LEPs) and other electroluminescent displays, one company is working on Organic Light Emitting Displays (OLEDS) in both rigid and flexible form. Universal Display Corp. appears to have the lead in numerous developments.
This thing didn't happen yesterday. Yes, they launched their first satellite the other day. But at my first scan nobody here has a clue. I've followed Sirius and XMSR for about a year. Both are real. It's all about receivers in cars, not deskjockeys like you and your MP3s that yearn to be free. It's about driving for 15 hours and having your favorite radio format whether you're in Billings Montana or BooFoo Florida. otoh, this reactionary space is entertaining, if not informative. ....M