TOUCH PANEL AND ELECTRONIC DEVICE INCLUDING THE SAME
First Claim
1. A touch panel comprising:
- a touch panel body comprising a first substrate and a second substrate that is spaced apart from the first substrate, a plurality of driving electrodes that are arranged on the first substrate and the second substrate, and electro-rheological fluid that fills a gap between the first substrate and the second substrate;
a driving unit that applies a driving voltage to all or a portion of the plurality of driving electrodes; and
a sensing unit that applies a sensing signal sequentially to the plurality of driving electrodes and senses a variation in capacitance between the driving electrodes due to a variation of the gap between the first substrate and the second substrate in response to the sensing signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch panel and an electronic device including the same are provided. The touch panel includes a touch panel body including a first substrate and a second substrate that is spaced apart from the first substrate, driving electrodes that are arranged on the first substrate and the second substrate, and electro-rheological fluid that fills a gap between the first substrate and the second substrate; a driver that applies a driving voltage to all or a portion of the driving electrodes; and a sensor that applies a sensing signal sequentially to the driving electrodes and senses a variation in capacitance between the driving electrodes due to a variation of the gap between the first substrate and the second substrate in response to the sensing signal.
-
Citations
22 Claims
-
1. A touch panel comprising:
-
a touch panel body comprising a first substrate and a second substrate that is spaced apart from the first substrate, a plurality of driving electrodes that are arranged on the first substrate and the second substrate, and electro-rheological fluid that fills a gap between the first substrate and the second substrate; a driving unit that applies a driving voltage to all or a portion of the plurality of driving electrodes; and a sensing unit that applies a sensing signal sequentially to the plurality of driving electrodes and senses a variation in capacitance between the driving electrodes due to a variation of the gap between the first substrate and the second substrate in response to the sensing signal. - View Dependent Claims (2, 3, 4, 5, 6, 20)
-
-
7. A touch panel comprising:
-
a first substrate comprising M first electrode lines arranged in parallel and extending in a first direction, wherein M is an integer equal to or greater than 2; a second substrate spaced apart from the first substrate by a gap, the second substrate comprising N second electrode lines arranged in parallel and extending in a second direction orthogonal to the first direction, wherein N is an integer equal to or greater than 2; electro-rheological fluid filled in the gap between the first substrate and the second substrate; a pulse generating circuit unit that generates a driving pulse voltage for driving the electro-rheological fluid and a sensing pulse voltage for determining an occurrence of an input on the touch panel; a pulse applying circuit unit that combines the driving pulse voltage received from the pulse generating unit with the sensing pulse voltage and applies the combined voltage to the M first electrode lines; and a sensing circuit unit that senses a variation in capacitance at each of intersections of the M first electrode lines and the N second electrode lines, in response to the sensing pulse voltage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A method of controlling a touch panel, the touch panel comprising a first substrate comprising M first electrode lines arranged in parallel and extending in a first direction wherein M is an integer equal to or greater than 2, a second substrate spaced apart from the first substrate by a gap and comprising N second electrode lines arranged in parallel and extending in a second direction orthogonal to the first direction, wherein N is an integer equal to or greater than 2, and electro-rheological fluid filled in the gap between the first substrate and the second substrate, the method comprising:
-
sequentially applying a sensing signal to the M first electrode lines; and sensing, from the N second electrode lines, a variation in capacitance at intersections of the M first electrode lines and the N second electrode lines, in response to the sensing signal. - View Dependent Claims (18, 19)
-
-
21. A touch panel comprising:
-
an M×
N array of first driving electrodes arranged on a first substrate and an M×
N array of second driving electrodes arranged on a second substrate so as to form an M×
N array of driving electrode pairs, the first substrate and the second substrate being spaced apart by a gap;electro-rheological fluid filled in the gap; a pulse generating circuit unit that generates a driving pulse voltage and a sensing pulse voltage; a pulse applying circuit unit that combines the driving pulse voltage received from the pulse generating unit with the sensing pulse voltage and applies the combined voltage individually to each of the driving electrode pairs of the M×
N array of driving electrode pairs; anda sensing circuit unit that senses a variation in capacitance at each driving electrode pair of the M×
N array of driving electrode pairs in response to the combined voltage individually applied thereto. - View Dependent Claims (22)
-
Specification