Title:
CAPACITIVE TOUCH DETECTION MEANS AND DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2014/168399
Kind Code:
A1
Abstract:
The present invention relates to a capacitive touch detection means and a detection method using a new scheme, which detects a touch signal using a difference between voltage magnitudes detected according to whether a touch is generated on a touch detection unit when an alternate voltage is applied to a line equivalent capacitor formed between a sensing pad being detecting touch and a non-sensing pad adjacent to the sensing pad. The touch detection means according to the present invention detects whether a touch capacitance (Ct) is generated by an approach of a touch input means which presses the upper surface of a display device and is exemplified as a finger (25) of a human body or a conductive material similar to the same. The touch detection means comprises: a sensing pad (10a) generating the touch capacitance (Ct) between the sensing pad (10a) and the touch input means; an alternate voltage applied to a line equivalent capacitor (Ceq) formed between the sensing pad (10a) and a non-sensing pad (10b) adjacent to the sensing pad (10a); and a touch detection unit (14) connected to the sensing pad (13) to detect a voltage difference generated according to whether the touch is generated by the touch input means. According to the present invention, a parasitic capacitor generated between a sensing pad signal line and a non-sensing pad signal line is used for detecting a touch, thereby easily designing and manufacturing a touch panel, and improving touch sensitivity.
More Like This:
| WO/2021/076192 | OPTICALLY TRANSPARENT PRESSURE SENSOR |
| WO/2016/132647 | TOUCH PANEL SYSTEM AND TOUCH PEN |
| WO/2014/032282 | TOUCH CONTROL ORNAMENT |
Inventors:
LEE SUNG HO (KR)
Application Number:
PCT/KR2014/003034
Publication Date:
October 16, 2014
Filing Date:
April 08, 2014
Export Citation:
Assignee:
LEE SUNG HO (KR)
International Classes:
G06F3/044; G06F3/03
Domestic Patent References:
| WO2012005483A2 | 2012-01-12 | |||
| WO2012121517A2 | 2012-09-13 |
Foreign References:
| US20120092288A1 | 2012-04-19 | |||
| KR20110042676A | 2011-04-27 | |||
| US20120043973A1 | 2012-02-23 |
Other References:
See also references of EP 2985683A4
None
None
Attorney, Agent or Firm:
AIP PATENT & LAW FIRM (KR)
특허법인에이아이피 (KR)
특허법인에이아이피 (KR)
Download PDF: