OPERATION KEY AND TERMINAL DEVICE

WIPO Patent Application WO/2011/004878

A1

Provided an operation key in which the force of a finger is efficiently transferred and a terminal device equipped with said operation key. The operation key is equipped with a first plane that protrudes upwards in the entire region and has an upper side that is a smooth curved section provided with a maximum point between both ends; and a second plane that connects the curved section and a side opposite the first plane, is provided in the direction of said opposite side with a maximum point in between the side of both connected ends that protrudes upwards in the entire region, and is a curved surface that falls in a direction orthogonal to the opposite side. The length of a line from the maximum point of the first plane toward the bottom side of said first plane that is drawn along said first plane perpendicularly to the bottom side is shorter than the length of a line from the maximum point to the side opposite the first plane that is drawn along the second plane perpendicularly to the opposite side.

IWAKI YOSHIHIRO (JP)

PCT/JP2010/061647

January 13, 2011

July 02, 2010

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NEC CORP (JP)
IWAKI YOSHIHIRO (JP)

G06F3/02; H01H13/14; H04M1/02; H04M1/23

JPH06309992A	1994-11-04
JP2009105634A	2009-05-14
JPH08115634A	1996-05-07
JP2009009195A	2009-01-15
JP2003123584A	2003-04-25
JP2009164059A	2009-07-23

OSAMU SONOBE, SHASHIN DE KAISETSU SURU 'SH-04A' (1/3), 11 November 2008 (2008-11-11), XP008150206, Retrieved from the Internet [retrieved on 20100903]
See also references of EP 2453338A4

ASAI, TOSHIO (JP)
Toshio Asai (JP)

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