Canon has a reissue patent covering SED TV technology. United States Patent RE40,062 was reissued February 12, 2008. It apparently has some modifications from previous SED TV patents. This may be the beginning of Canon’s attempt to produce SED panels without using the Nano-Proprietary patented technology.
Here’s an excerpt:
Yoshioka , et al. February 12, 2008
Display device with electron-emitting device with electron-emitting region insulated from electrodes
Abstract
A display device includes an electron-emitting device which is a laminate of an insulating layer and a pair of opposing electrodes formed on a planar substrate. A portion of the insulating layer is between the electrodes and contains fine particles of an electron emitting substance, that portion acting as an electron emitting region. Electrons are emitted from the electron emission region by applying a voltage to the electrodes, thereby stimulating a phosphorous to emit light.
Inventors: Yoshioka; Seishiro (Hiratsuka, JP), Nomura; Ichiro (Atsugi, JP), Suzuki; Hidetoshi (Yokohama, JP), Takeda; Toshihiko (Yokohama, JP), Kaneko; Tetsuya (Yokohama, JP), Banno; Yoshikazu (Machida, JP), Yokono; Kojiro (Yokohama, JP)
For a much more detailed review by someone who knows what he’s talking about, check out the full story at donpatent.blogspot.com
Technorati Tags: Canon, SED TV, Nano-Proprietary
