公开(公告)号：US20220206657A1

公开(公告)日：2022-06-30

申请号：US17555893

申请日：2021-12-20

申请人： Shanghai Tianma Micro-Electronics Co., Ltd.

发明人： Yuki ITO ,  Yukihiro ITO

IPC分类号： G06F3/041 ,  G06F3/044 ,  H04N13/302

摘要： A detection device includes a plurality of first electrodes extending in a first direction, a plurality of second electrodes extending in a second direction that crosses the first direction, and a controller. The controller selects, as first detection electrodes, two of the first electrodes and two of the second electrodes positioned outermost in a predetermined detection region, selects, as first driving electrodes, at least one of first electrodes and the second electrodes not selected as the first detection electrodes, and detects a target in a non-contacting state from signals expressing capacitances acquired, by applying a voltage to the first driving electrodes, from the first detection electrodes.

公开(公告)号：US20220365650A1

公开(公告)日：2022-11-17

申请号：US17738692

申请日：2022-05-06

申请人： Shanghai Tianma Micro-Electronics Co., Ltd.

发明人： Tsuyoshi ICHIRAKU ,  Yukihiro ITO ,  Hitoshi HIRATSUKA

IPC分类号： G06F3/041 ,  G06F3/044

摘要： A touch panel includes arranged touch electrodes, and a driver IC connected to each of the touch electrodes. The plurality of touch electrodes is grouped into a plurality of groups such that electrodes belonging to different groups are included in a range smaller than an object to be detected, such as a finger. The driver IC alternately or sequentially applies a driving voltage to the touch electrodes of the plurality of groups, detects a capacitance of each of the sensor electrodes, and detects, based on the detected capacitance, whether there is a touch.