The SED panel is a type of flat panel display panel display characterized by using technology of traditional CRT displays (CRT) for each of the dots (pixels) displayed on the screen. Each pixel is a micro cathode ray tube. In principle, these panels offer the advantages of picture tubes and TFT, without the shortcomings of both. This will get better contrast and viewing angle without increasing consumption. It also allows to extend the dimensions of the screen with respect to the TFT screens or plasma. The project has been jointly developed by Canon and Toshiba.
Development Goals and
The panel SED (Surface-conduction Electron-emitter Display, or panel directed electron emission) was designed and created to improve the technology they have flat panel TVs. This panel aims to meet the needs required for high definition in all fields related to digital image (since its implementation in televisions, and in the application for photography and film).
The project began in the mid 80's by Canon, and later, in 1999 had a lot of support from Toshiba, a multinational company dedicated to electronics. This union suggests the creation of a joint project under the same name, so it appears this technology called SED Inc. In addition, the development of this technology has accelerated rapidly so that it can market to prospects in 2007 (sales forecast Unconfirmed market). The company provides display that supports more than 40 inches.
Technology
The project began in the mid 80's by Canon, and later, in 1999 had a lot of support from Toshiba, a multinational company dedicated to electronics. This union suggests the creation of a joint project under the same name, so it appears this technology called SED Inc. In addition, the development of this technology has accelerated rapidly so that it can market to prospects in 2007 (sales forecast Unconfirmed market). The company provides display that supports more than 40 inches.
Technology
Technology used for these panels is still under development and there is no specification of how it will work exactly. The principle lies in the standard of television cathode ray tube (CRT). In the CRT, an electron beam is focused into each pixel to illuminate as appropriate. SED technology in this process is "easier" because it uses a single electron beam for each pixel, which then lit the match in charge of producing the light that will shine the primary colors RGB of each pixel. Thanks to this there will be to direct and focus a single beam of electrons over an array of pixels, but you have to assemble millions of rays electron on a SED panel. One for each pixel.
Thus, each pixel has its own electron gun. The electron gun is formed from two electrodes very small (microscopic) separated by a few nanometers away. These electrodes are applied a voltage of 16 volts that "through" the NMS that separates the electrodes. The result of this shift between electrodes, the current generates electrons shoot out in all directions. To channel these electrons to the match that will shine using a 10-kilovolt electric field in the direction in which the home match. This will generate an electron beam way that impacts on phosphorus belonging to a particular pixel.
to form an entire image is needed hundreds of thousands of pixels (million high definition). So now we are studying the placement of the electron guns in a small space, without this meaning a loss of function of these guns or a loss of homogeneity in the image.
Features and Benefits
Thus, each pixel has its own electron gun. The electron gun is formed from two electrodes very small (microscopic) separated by a few nanometers away. These electrodes are applied a voltage of 16 volts that "through" the NMS that separates the electrodes. The result of this shift between electrodes, the current generates electrons shoot out in all directions. To channel these electrons to the match that will shine using a 10-kilovolt electric field in the direction in which the home match. This will generate an electron beam way that impacts on phosphorus belonging to a particular pixel.
to form an entire image is needed hundreds of thousands of pixels (million high definition). So now we are studying the placement of the electron guns in a small space, without this meaning a loss of function of these guns or a loss of homogeneity in the image.
Features and Benefits
By using a technology as similar to the CRT, all the characteristics and achievements of this technology can be applied to the SED screens. TVs using SED panels have a picture quality equal to all CRT TVs, achieving an excellent way to improve the shortcomings of LCD flat screen devices, Plasma or TFT.
The color, contrast and brightness are equal to or better than CRT.
There will be no problem for the viewing angle of the screen (So no change of color and brightness from different angles). Its use lowers
2 / 3 the power used in a CRT. 1 / 3 with respect to that used in LCDs.
tolerate temperatures from -40 º to +85 º.
The manufacturing process is simpler than LCD screens.
No problem with the image refresh and fluency as they use the same frame rate that a normal CRT TV. The black
achieve higher quality.
Future and marketing
commercialization is expected in mid to late 2007. Its low manufacturing costs and high quality make this a very competitive technology to all ranges of flat TVs. Furthermore, it has improved considerably the length of the screens, which bear measures higher than 40 inches.
The color, contrast and brightness are equal to or better than CRT.
There will be no problem for the viewing angle of the screen (So no change of color and brightness from different angles). Its use lowers
2 / 3 the power used in a CRT. 1 / 3 with respect to that used in LCDs.
tolerate temperatures from -40 º to +85 º.
The manufacturing process is simpler than LCD screens.
No problem with the image refresh and fluency as they use the same frame rate that a normal CRT TV. The black
achieve higher quality.
Future and marketing
commercialization is expected in mid to late 2007. Its low manufacturing costs and high quality make this a very competitive technology to all ranges of flat TVs. Furthermore, it has improved considerably the length of the screens, which bear measures higher than 40 inches.
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