Title:
静電容量式タッチパネルの多点検出方法
Document Type and Number:
Japanese Patent JP4981113
Kind Code:
B2
Abstract:
A multi-point sensing method applicable to a capacitive touch panel is disclosed to detect a voltage variation of every electrode patterned on two parallel electrode layers by means of a capacitive sensing circuit, and measure the vertical capacitance at the intersection crossed by the electrodes of the two electrode layers where the voltage variation is detected, and then compare the vertical capacitance thus measured with the initial vertical capacitance at the same intersection before touch, as a result, the intersection corresponding to the measured vertical capacitance may be determined as the touch point when the comparison result shows difference.
Inventors:
Jiang-Ting Chen
Chang-Pochao
Jun-Yao Ruang
Chang-Pochao
Jun-Yao Ruang
Application Number:
JP2009253238A
Publication Date:
July 18, 2012
Filing Date:
November 04, 2009
Export Citation:
Assignee:
ACER INCORPORATED
International Classes:
G06F3/041; G06F3/044
Domestic Patent References:
| JP2009098942A | ||||
| JP2007286814A | ||||
| JP2002342033A | ||||
| JP2005267478A | ||||
| JP8095701A | ||||
| JP59046827A | ||||
| JP61084729A | ||||
| JP62134717A |
Foreign References:
| WO2009107415A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Yuichi Yamada
Masakazu Noda
Ikeda adult
Yuichi Yamada
Masakazu Noda
Ikeda adult