| 发明名称 |
REDUCING FLOATING GROUND EFFECTS IN PIXELATED SELF-CAPACITANCE TOUCH SCREENS |
| 摘要 |
A touch controller is disclosed. In some examples, the touch controller can include sense circuitry configured to be coupled to a first touch pixel and a second touch pixel on a touch sensor panel. In some examples, the sense circuitry can be configured to drive and sense the first touch pixel during a first time period while coupling the second touch pixel to a reference voltage. In some examples, the sense circuitry can be configured to drive and sense the second touch pixel during a second time period while coupling the first touch pixel to the reference voltage. In some examples, the reference voltage can be a system ground of the touch controller. In some examples, the sense circuitry can be configured to drive and sense pluralities of touch pixels in a similar manner. |
| 申请公布号 |
US2015378465(A1) |
申请公布日期 |
2015.12.31 |
| 申请号 |
US201414318157 |
申请日期 |
2014.06.27 |
| 申请人 |
Apple Inc. |
发明人 |
SHIH David H.C.;LIN Albert |
| 分类号 |
G06F3/044 |
主分类号 |
G06F3/044 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A touch controller comprising:
sense circuitry configured to be coupled to a first touch pixel and a second touch pixel on a touch sensor panel, the sense circuitry configured to:
during a first time period, drive and sense the first touch pixel and couple the second touch pixel to a reference voltage; andduring a second time period, drive and sense the second touch pixel and couple the first touch pixel to the reference voltage. |
| 地址 |
Cupertino CA US |
