Teraokaseiko Co Ltd exhibited a touch panel display that can be operated by touching either side of the display at Sign & Display Show 2008, which is taking place from Aug 28 to 30, 2008, at Tokyo Big Sight (Fig 1).
The display was made by attaching a resistive touch panel to the both sides of a transparent inorganic EL panel developed by Teraokaseiko.
The company expects the display will be used as follows.
- When mapping software is being used, users can touch the back side of the display to operate it without hiding a part of the map with their fingers. They can see both the entire map and their fingers moving behind the display.
- The display recognizes the movement of "pinching," in addition to other finger movements such as tapping and sliding.
- Two users facing each other can play a game by using both sides of the display (Fig 2).
The pixel count of the inorganic EL panel is 256 × 120. It is an orange monochrome display. The light transmittances of the inorganic EL panel and the touch panel attached to it are both 80%. And, as a whole, the display has a transmittance of 51.2%.