Granted Patent B2

US 12,572,239 · App. 18/736,699 · Granted Mar 10, 2026

Inventors: Seyeob Kim (Seongnam-si, KR); Hwanhee Lee (Seongnam-si, KR); Bonkee Kim (Seongnam-si, KR)

Assignee: HIDEEP INC.

G06F3/0418G06F3/04162G06F3/04166G06F2203/04104

Abstract

Claims (66)

1 . A touch apparatus comprising:

a touch panel including a plurality of touch electrodes; and

a touch driver configured to:

apply a first driving signal to at least one touch electrodes of the plurality of touch electrodes during a first period, and

apply a second driving signal to at least one touch electrodes of the plurality of touch electrodes during in a second period different from the first period,

wherein the first driving signal and the second driving signal are alternating signals; and

wherein the second driving signal has a different ratio of a disable level period to an enable level period in one repeated cycle compared with the first driving signal.

2 . The touch apparatus as claimed in claim 1 , wherein

the touch driver is further configured to:

stop applying the second driving signal during a third period after the second period, and

receive a first detection signal through at least one touch electrode of the plurality of touch electrodes from a first touch object on the touch panel during the third period.

3 . The touch apparatus as claimed in claim 2 , further comprising:

a touch controller configured to determine a location of the first touch object on the touch panel based on the first detection signal.

4 . The touch apparatus as claimed in claim 2 , wherein

the first detection signal is generated by resonance of the first touch object in response to the second driving signal.

5 . The touch apparatus as claimed in claim 1 , wherein

the second driving signal has a ratio of the disable level period to the enable level period which is at least one of a:2b+1, a:2b+2, a:2b+3, a:2b+4, a:(3b+1), a:2(b+3)+1, a:2(b+3), and a:(2b+1), in one repeated cycle, and a and b are positive integers.

6 . The touch apparatus as claimed in claim 1 , wherein

the plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes, the plurality of first touch electrodes extend in a first direction and are arranged in a second direction crossing the first direction, and the plurality of second touch electrodes extend in the second direction and are arranged in the first direction.

7 . The touch apparatus as claimed in claim 6 , wherein

the touch driver is further configured to:

apply a third driving signal to the plurality of first touch electrodes during a fourth period different from the first period and the second period, and

receive a second detection signal by a second touch object from the plurality of second touch electrodes during the fourth period.

8 . The touch apparatus as claimed in claim 7 , further comprising:

a touch controller configured to determine a location of the second touch object on the touch panel based on the second detection signal.

9 . The touch apparatus as claimed in claim 7 ,

wherein the touch driver includes a first driver connected to the plurality of first touch electrodes and a second driver connected to the plurality of the second touch electrodes, and

wherein the first driver includes:

a differential amplifier connected to two first touch electrodes of the plurality of first touch electrodes and configured to receive the second detection signal from one of the two first touch electrodes and amplify the second detection signal, and

an ADC unit configured to convert the amplified second detection signal to a digital signal.

10 . The touch apparatus as claimed in claim 9 , wherein

the two first touch electrodes are spaced apart from each other with one or more first touch electrodes therebetween.

11 . A touch detection method comprising:

applying a first driving signal to at least one touch electrodes of a plurality of touch electrodes during a first period;

applying a second driving signal to at least one touch electrode of the plurality of touch electrodes during a second period different from the first period; and

receiving a first detection signal through at least one touch electrode of the plurality of touch electrodes from a first touch object on the touch panel during a third period after the second period, wherein the second driving signal is not applied during the third period,

wherein the first driving signal and the second driving signal are alternating signals; and

wherein the second driving signal has a different ratio of a disable level period to an enable level period in one repeated cycle compared with the first driving signal.

12 . The touch detection method as claimed in claim 11 , further comprising:

determining a location of the first touch object on the touch panel based on the first detection signal.

13 . The touch detection method as claimed in claim 11 , wherein

the first detection signal is generated by resonance of the first touch object in response to the second driving signal.

14 . The touch detection method as claimed in claim 11 , wherein

the second driving signal has a ratio of the disable level period to the enable level period which is at least one of a:2b+1, a:2b+2, a:2b+3, a:2b+4, a:(3b+1), a:2(b+3)+1, a:2(b+3), and a:(2b+1), in one repeated cycle, and a and b are positive integers.

15 . The touch detection method as claimed in claim 11 , wherein

the plurality of touch electrodes include a plurality of a first touch electrodes and a plurality of a second touch electrodes, the plurality of first touch electrodes extend in a first direction and are arranged in a second direction crossing the first direction, and the plurality of second touch electrodes extend in the second direction and are arranged in the first direction.

16 . The touch detection method as claimed in claim 15 , further comprising:

applying a third driving signal to the plurality of first touch electrode during a fourth period different from the first period and the second period, and

receiving a second detection signal by a second touch object from the plurality of second touch electrode during the fourth period.

17 . The touch detection method as claimed in claim 16 , further comprising:

determining a location of the second touch object on the touch panel based on the second detection signal.

18 . A touch system comprising:

a stylus pen including a LC resonance circuit; and

a touch device including:

a touch panel including a plurality of touch electrodes;

a touch driver configured to:

apply a first driving signal to at least one touch electrode of the plurality of touch electrodes during a first period,

apply a second driving signal to at least one touch electrode of the plurality of touch electrodes during a second period different from the first period, and

receive a first detection signal through at least one touch electrode of the plurality of touch electrodes from the stylus pen on the touch panel during a third period after the second period; and

a touch controller configured to determine a location of the stylus pen on the touch panel based on the first detection signal

wherein the first driving signal and the second driving signal are alternating signals; and

wherein the second driving signal has a different ratio of a disable level period to an enable level period in one repeated cycle compared with the first driving signal.

19 . The touch system as claimed in claim 18 , wherein

the first detection signal is generated by resonance of the first touch object in response to the second driving signal.

20 . The touch system as claimed in claim 18 , wherein

the second driving signal has a ratio of the disable level period to the enable level period which is at least one of a:2b+1, a:2b+2, a:2b+3, a:2b+4, a:(3b+1), a:2(b+3)+1, a:2(b+3), and a:(2b+1), in one repeated cycle, and a and b are positive integers.

Priority Claims (1)

Continuity (4)

References Cited (14)