Epson large
Recently, Seiko Epson Corporation invented something called the "uniform film jet" of new technology, this inkjet technology, uniform deposition of organic materials, which means large-screen OLED TV With the implementation of the conditions of production, on the already sagging in the LCD TV market constitutes a substantial pressure.
Recently held SID2009 Texas Conference on display technology, Epson papers of the technology public. Also showed a prototype using the technology of 14-inch OLED display with a resolution equal to 37 inches wide HD Display.
It is reported that, compared to the current L CD LCD, OLED display with high brightness, contrast, intensity, heat a small, low power consumption and other advantages, the thickness can be as small as a few millimeters, and has a thin flexible features can be curly. Even the latest of LCD LCD TV, there are more than 30 mm thickness.
OLED technology structure is very simple: LCD needs light, but the product itself can be light-emitting OLED can be done very thin; on the other hand, plasma TV through the discharge to achieve the display, the voltage will be high, long power-consuming large, compared to, OLED products can save more power. History is often caused by the accidental
, was full of continuity. Since 20 years ago, Eastman Kodak lab-Chinese researchers Dr. Deng Qingyun stumbled in the dark light of the organic store Battery Start, OLED technology has become the high number of vendors scramble.
And the key technological breakthroughs, the Epson researchers from more than ten years ago, a chance to "cross-border thinking" led to the idea. One day, sitting with Epson's research chat, a man suddenly asked: "We are so superior inkjet technology, can only be used in the paper?" This question, they immediately caused a domino colleagues camel thinking. Soon after, produced a series of ask, "is the ah, we can not use it in other places to print it?" "Is not also use a liquid other than ink it?" "We'll fight it?" … …
Answer there, "printed semiconductor!" "Print circuit board!"
Epson OLED R & D Center General Manager SatoruMiyashita said, "OLED TV is the next big screen trend display. Epson inkjet technology has been committed to research and development to promote the realization of large-screen production of OLED TVs . "
The previously placed before the OLED is an important problem is the most widely used organic material deposition method?? Vacuum thermal evaporation (VTE) technique?? Not resolve the problem layer of organic material evenly, and then can not be achieved large panel OLED display production.
This way, the "uniform film jet," the invention of new technologies can be described as anticipated. Epson fully optimize the use of the micro-voltage inkjet (MicroPiezo) based on patented technology, developed a new OLED display Make Process. According to experts, the technology could Photographic floor drops of different sizes on the selection and accurate control of injection, so that the volume of material deposited does not exceed the amount required, so as to realize a very uniform layer (the error is less than 1 %). It is understood that the process has been applied to produce high uniformity of the trial production of prototype panels.
Inkjet technology for OLED TV production process, the advantages of
The glass floor on the formation of uniform thin film layer of organic material technology, is a key element in producing OLED TVs. At present, the vacuum thermal evaporation (VTE) is a technique most widely used. Process using the technology must be conducted in a vacuum chamber, asked to place a shade close to the glass floor panels, floor to determine the material deposited on the pattern. However, the vacuum thermal evaporation technique in the production of large-screen OLED television several major defects exist. For example, the shading plate process vulnerable to the effects of high temperature shift, the result difficult to maintain the floor in the large-size uniform deposition rate.
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