Invention Grant
- Patent Title: Ghost resolution for a capacitive touch panel
- Patent Title (中): 电容式触摸屏的Ghost分辨率
-
Application No.: US12649779Application Date: 2009-12-30
-
Publication No.: US08619056B2Publication Date: 2013-12-31
- Inventor: Chia-Hsing Lin , Yi-Hsin Tao , Po-Hao Kuo , Hsin-Shieh Tsai , Min-Jhih Lin
- Applicant: Chia-Hsing Lin , Yi-Hsin Tao , Po-Hao Kuo , Hsin-Shieh Tsai , Min-Jhih Lin
- Applicant Address: TW Hsinchu
- Assignee: Elan Microelectronics Corp.
- Current Assignee: Elan Microelectronics Corp.
- Current Assignee Address: TW Hsinchu
- Agency: Muncy, Geissler, Olds & Lowe, PLLC
- Priority: TW98100351A 20090107; TW98105214A 20090219
- Main IPC: G06F3/045
- IPC: G06F3/045

Abstract:
Ghost resolution sensing methods are provided for capacitive touch panels. When ghost is detected involving two points on a capacitive touch panel, for each of the two points, the intersected traces at that one are concurrently charged to sense the capacitance value from either one of the intersected traces, and according thereto, a real point and a ghost point can be distinguished from each other. Alternatively, the intersected traces are crisscross driven by two synchronous and in phase signals or synchronous but out of phase signals, to sense the capacitance values at the two points. Preferably, intersectional calibration is performed in conjunction therewith, to recognize the real points.
Public/Granted literature
- US20100188364A1 GHOST RESOLUTION FOR A CAPACITIVE TOUCH PANEL Public/Granted day:2010-07-29
Information query