Invention Grant
- Patent Title: Touch panel, position sensing method of touch panel, and integrated circuit
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Application No.: US14410755Application Date: 2012-06-29
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Publication No.: US09639201B2Publication Date: 2017-05-02
- Inventor: Masashi Hashimoto
- Applicant: Masashi Hashimoto
- Applicant Address: KR Seoul
- Assignee: LG INNOTEK CO., LTD.
- Current Assignee: LG INNOTEK CO., LTD.
- Current Assignee Address: KR Seoul
- Agency: KED & Associates, LLP
- Priority: KR10-2012-0068237 20120625; KR10-2012-0068238 20120625; KR10-2012-0068807 20120626
- International Application: PCT/KR2012/005214 WO 20120629
- International Announcement: WO2014/003225 WO 20140103
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044 ; G06F3/038

Abstract:
A touch panel according to the disclosure includes a touch screen including a plurality of X electrode lines and Y electrode lines, which are alternately disposed with each other, and generating signals that vary depending on a touch position; and a plurality of comparators connected between first and second Y electrode lines adjacent to each other, wherein the touch position on the touch screen is detected based on output codes prepared by using output values of the comparators. A method for detecting a position of a touch panel according to the disclosure includes the steps of generating a position signal that varies according to a touch position between a plurality of X electrode lines and first and second Y electrode lines, which are adjacent to each other and alternately disposed with X electrode lines; detecting adjacent signals from a Y electrode line adjacent to a left of the first Y electrode and a Y electrode line adjacent to a right of the second Y electrode line; inputting the adjacent signal as an input signal of the comparator; overlapping the position signal on one of the detected adjacent signals; and comparing the input signal using the comparator. An integrated circuit according to the disclosure includes a plurality of comparators including a positive input terminal receiving a first input signal that varies depending on a touch position, a negative input terminal receiving a second input signal, and an output terminal outputting a comparison signal of the first and second input signals; and an operation unit generating a position signal by reading out the comparison signal of the comparators.
Public/Granted literature
- US20150177901A1 TOUCH PANEL, POSITION SENSING METHOD OF TOUCH PANEL, AND INTEGRATED CIRCUIT Public/Granted day:2015-06-25
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