Mitsubishi 3D Touch Panel Demonstrated

Mar 13, 2009 by John Messina weblog
Mitsubishi 3D Touch Panel (Prototyped)
Image copyright: Tech-On!, Nikkei Business Publications

(PhysOrg.com) -- A prototyped capacitive touch panel was demonstrated by Mitsubishi Electric Corp at the Interaction 2009 in Tokyo, Japan. The 3D touch panel can detect not only x- and y- coordinates but also its z- coordinates by detecting the distance between a finger and panel. Screen size is approximately 5.7 inches with a resolution of 640 x 480 pixels.

The 3D functions by switching between two detection methods and would be determined by the position of the finger. When a finger approaches the panel, it's defined as being in "proximity state" After the finger is in contact with the panel it's in "contact state". In "proximity state", priority is given to the screen's sensitivity and in "contact state", resolution has priority.

The panel can detect a capacitance change of approximately 0.3pF in the proximity state and about 8 to 19pF in the contact state, according to a spokesperson for Electric Corp.

In the proximity state the resolution in the x- and y- axis is equivalent to 10mm. In respect to the z-axis direction, "it is possible to determine the distance of the finger as long as it is less than 20mm," the spokesperson said. The company also stated that in the contact state, the resolution in the x-axis and y-axis directions is equivalent to 0.2mm.

Sensitivity in the proximity state is increased by connecting multiple to increase the sensor area. Parasitic capacity has also been reduced by adding a "sensor shield control". This function eliminates the need for a shield layer that reduces electromagnetic noise generated from an .

This prototype is based on a capacitive touch panel that is available on the market today, and only required a few changes. The changes involved adding switch elements to connect multiple sensors and improved the detection circuit to reduce its parasitic capacity.

Since the touch panel is still in its developmental stages, there is no set time as to when it will be publically announced. The company needs to verify its resistance to environment as well as operability in actual devices before it can become marketable.

via Tech-On!, Nikkei

© 2009 PhysOrg.com

Explore further: LG Chem's super-efficient OLED lighting has life of 40,000 hours

add to favorites email to friend print save as pdf

Related Stories

Samsung Exhibits 400ppi-Equivalent LCD Panel for Cell Phones

Apr 14, 2004

Samsung Electronics Co, Ltd of Korea exhibited a variety of panels, including a 2.03-inch LCD panel with the resolution equivalent to 400ppi, and a 1.83-inch QVGA-size LCD panel with the resolution of 223ppi, at the 19th ...

SAMSUNG Electronics Showcases Innovative Display Technology

Aug 24, 2004

Samsung LCD Business, a division of Samsung Electronics Co., Ltd. and the world's largest provider of TFT-LCD display panels, today unveiled a wide range of display components and technologies at the International Display Research Conference (As ...

Recommended for you

Google to test cars without a driver

16 hours ago

Google plans to begin testing its new prototype of a self-driving car - which, unlike earlier models, doesn't require a back-up driver - at NASA's Ames Research Center, just a few miles from the tech company's ...

Self-driving cars now need a permit in California

19 hours ago

Computer-driven cars have been testing their skills on California roads for more than four years—but until now, the Department of Motor Vehicles wasn't sure just how many were rolling around.

Index ranks Japan Asia's most efficient innovator (Update)

Sep 12, 2014

A new index ranks Japan as the most efficient among Asian countries in turning the building blocks of creativity into tangible innovations that benefit their economies and people while Myanmar, Pakistan and Cambodia are least ...

Making travel quick, safe for cars, bikes, walkers

Sep 10, 2014

Cellphones that warn drivers when people are crossing in front of them. Bicycles and cars that communicate with traffic lights. Sensors in cars that quickly alert other drivers to black ice, potholes or other ...

Tech giants bet on 'smart home' revolution

Sep 10, 2014

It's long been the stuff of science fiction, but tech giants hope the "smart home", where gadgets talk to each other and the fridge orders the milk, will soon become reality.

User comments : 1

Adjust slider to filter visible comments by rank

Display comments: newest first

raron
not rated yet Mar 13, 2009
Very cool! Combine this with a lenticular screen in front, and voilá! Stuff like 3D virtual keyboards are possible. Only thing lacking is a tactile sense (when hovering over the screen).