ANNOUNCEMENT ABOUT THE PRESENT MULTI TOUCH SCREEN TECHNOLOGY
Now, some manufacturers brought out a new type of multi touch screen whose size ranges from 12 inch to larger and can be used on LCD. They all announced that they used the projected capacitive technology. To these, I announce below:
These touch screens can determine the exact location of 2 or more touch points, even can output the touch image. And the external feature of them is similar to the projected capacitive touch screen and the size of them is larger than 12 inch.
The technology applied here is not the projected capacitive as they announced.
It is my technology, a new type touch screen.
My technology detected touch by the variations of electric field: via loading the variations of electric field to the ray (such as ultrasonic or light) instead of conductors, it gets the high SNR and large screen size.
The major difference of the screen s based on my technology to the screens based on projected capacitive technology is that my screen contains the sound or light devices, but the projected capacitive touch screen only utilizes conductor and glass, optical gel.
My technology already has been applied for a patent; the priority date is February, 2008. I already applied for a US patent, and will apply for a Europe patent in the near future.
My patent’s PCT international publication date is august, 2009.
I am both the inventor and the holder of the patent; I have not promised any manufacturer to use the technology. The multi touch screens use the two structures below:
The first one is suit medium or small size screen:
The second one is suit medium or large size screen
If the readers are interested or already manufacturing touch screens which meet above characteristics, I urge you to examine and detect your products in accordance with the display above.
I already got a table pc, the multi touch screen in it is based on my technology, and detected it, and have gotten evidences.
The assumption that the mere presence of acoustic wave generator and receiver from transparent piezoelectric materials and conductors can evident the declaration of the utilization of projected capacitive touch screen technology is wrong and dangerous.
Interested person can detected the acoustic (light) wave or wave generator and receiver in the screen to ascertain whether the touch screen use the technology. Now, contact me is welcome.
More information (structure images of the touch screen)
http/cid-4557f72e336c23f4.spaces.live.com
My email: kkdoout@hotmail.com