US 9,811,195 B2
Touch screen with soft key enabling electromagnetic resonance input
Joo-Hoon Lee, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Joo-Hoon Lee, Gyeonggi-do (KR)
Filed on Jul. 9, 2012, as Appl. No. 13/544,378.
Claims priority of application No. 10-2011-0069165 (KR), filed on Jul. 12, 2011.
Prior Publication US 2013/0016064 A1, Jan. 17, 2013
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01); G06F 3/046 (2006.01)
CPC G06F 3/0416 (2013.01) [G06F 3/044 (2013.01); G06F 3/046 (2013.01); G06F 2203/04106 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A touch screen comprising:
a user interface including a display area and at least one soft key, wherein the display area and the at least one soft key are in different sections of the user interface;
a touch sensor unit disposed under the display area and the at least one soft key of the user interface, for sensing a touch on the display area or the at least one soft key;
a display unit disposed under the touch sensor unit, for outputting a display screen;
a first electromagnetic sensor unit disposed under the display unit, for sensing an electromagnetic field incident on the display area by using a plurality of first loop units included in the first electromagnetic sensor unit, wherein each of the plurality of first loop units is overlapped with each other; and
a second electromagnetic sensor unit physically separated from the first electromagnetic sensor unit, for sensing at least one electromagnetic field incident on the at least one soft key by using at least one second loop unit included in the second electromagnetic unit, wherein the at least one second loop unit is disposed at a position corresponding to the at least one soft key.