公开(公告)号：US09256330B2

公开(公告)日：2016-02-09

申请号：US13899700

申请日：2013-05-22

Applicant: Qualcomm Technologies, Inc.

Inventor： Ashutosh R. Joharapurkar ,  Rajesh Tiruvuru

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/044 ,  G06F3/03545 ,  G06F3/0416

Abstract: A capacitive touch panel includes sense electrodes arranged next to one another and drive electrodes arranged next to one another across the sense electrodes. The drive electrodes and the sense electrodes define a coordinate system where each coordinate location comprises a capacitor formed at a junction between one of the drive electrodes and one of the sense electrodes via mutual capacitance between the electrodes. The drive electrodes are configured to receive a first signal from a driver coupled with the drive electrodes for powering the drive electrodes to sense passive input to the capacitive touch panel at each coordinate location. Passive input can also be sensed via self-capacitance of the capacitive touch panel sensors. The drive electrodes and the sense electrodes are configured to receive a second signal from an active stylus to sense active input to the capacitive touch panel at each coordinate location.

Abstract translation: 电容式触摸面板包括彼此相邻布置的感测电极和在感测电极上彼此相邻布置的驱动电极。 驱动电极和感测电极定义坐标系，其中每个坐标位置包括通过电极之间的互电容而形成在驱动电极中的一个和感测电极中的一个之间的接合处的电容器。 驱动电极被配置为从与驱动电极耦合的驱动器接收第一信号，以驱动驱动电极来感测在每个坐标位置处的电容式触摸面板的被动输入。 无源输入也可以通过电容式触摸屏传感器的自身电容来感测。 驱动电极和感测电极被配置为从有源触针接收第二信号，以在每个坐标位置感测到电容式触摸面板的有源输入。