发明名称 |
Touch sensing apparatus and method capable of supporting hover sensing |
摘要 |
Disclosed herein is a touch sensing apparatus capable of supporting hover sensing, including: a plurality of capacitance-voltage converters (C-V converters) outputting different voltage values depending on a change in capacitance of each of the sensing electrodes; a plurality of integrators integrating output voltages of each of the C-V converters; a first multiplexer multiplexing outputs of the plurality of integrators; a second multiplexer multiplexing the outputs of the plurality of integrators; a first differential amplification unit for touch sensing receiving an output of the first multiplexer and an output of the second multiplexer; a second differential amplification unit for hover sensing receiving the output of the first multiplexer and the output of the second multiplexer; and a control unit sensing a touch event or a hover event, thereby removing a common noise to accurately sense both the touch event and the hover event. |
申请公布号 |
US9389740(B2) |
申请公布日期 |
2016.07.12 |
申请号 |
US201414314867 |
申请日期 |
2014.06.25 |
申请人 |
Samsung Electro-Mechanics Co., Ltd. |
发明人 |
Jo Byeong Hak;Jeong Moon Suk;Kwon Yong Il;Park Tah Joon |
分类号 |
G06F3/044 |
主分类号 |
G06F3/044 |
代理机构 |
NSIP Law |
代理人 |
NSIP Law |
主权项 |
1. A touch sensing apparatus capable of supporting hover sensing of a touch panel including a plurality of driving electrodes and a plurality of sensing electrodes, comprising:
a plurality of capacitance-voltage converters (C-V converters) outputting different voltage values depending on a change in capacitance of each of the sensing electrodes; a plurality of integrators integrating output voltages of each of the C-V converters; a first multiplexer multiplexing outputs of the plurality of integrators; a second multiplexer multiplexing the outputs of the plurality of integrators; a first differential amplification unit for touch sensing receiving an output of the first multiplexer and an output of the second multiplexer; a second differential amplification unit for hover sensing receiving the output of the first multiplexer and the output of the second multiplexer; and a control unit sensing a touch event or a hover event based on an output of the first differential amplification unit and an output of the second differential amplification unit. |
地址 |
Suwon-si KR |