公开(公告)号：US20150091850A1

公开(公告)日：2015-04-02

申请号：US14278893

申请日：2014-05-15

Applicant: Synaptics Incorporated

Inventor： Stephen L. MOREIN ,  Joseph Kurth REYNOLDS

IPC: G06F3/044 ,  G05F1/625

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418

Abstract: An input device comprising a display device having an integrated capacitive sensing device. The input device includes a plurality of sensor electrodes a plurality of display electrodes, a modulated power supply configured to provide a modulated reference signal, and a processing system. The processing system includes a sensor module configured to drive a plurality of sensor electrodes with a modulated capacitive sensing signal that is based on the modulated reference signal for capacitive sensing during a first time period. The processing system also includes a display driver module configured to drive a plurality of display electrodes of a display device with modulated signals based on the modulated reference signal during the first time period. The modulated signals cause voltage between the plurality of display electrodes and the plurality of sensor electrodes to remain substantially constant.

Abstract translation: 一种输入装置，包括具有集成电容感测装置的显示装置。 输入装置包括多个传感器电极，多个显示电极，被配置为提供调制参考信号的调制电源和处理系统。 处理系统包括传感器模块，该传感器模块被配置为利用基于用于在第一时间段内的电容感测的调制参考信号的调制电容感测信号来驱动多个传感器电极。 所述处理系统还包括显示驱动器模块，所述显示驱动器模块被配置为在所述第一时间段内基于所述经调制的参考信号来驱动具有调制信号的显示装置的多个显示电极。 调制信号使得多个显示电极和多个传感器电极之间的电压基本保持不变。

公开(公告)号：US20150091848A1

公开(公告)日：2015-04-02

申请号：US14212815

申请日：2014-03-14

Applicant: SYNAPTICS INCORPORATED

Inventor： Stephen L. MOREIN ,  Petr SHEPELEV ,  Jeffrey LUKANC ,  Joseph Kurth REYNOLDS

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416

Abstract: Embodiments described herein include a display device having a capacitive sensing device, a processing system and a method for detecting presence of an input object using a capacitive sensing device. In one embodiment, the display device includes a plurality of sensor electrodes arranged in a matrix. The processing system performs absolute capacitive sensing with the matrix of sensor electrodes. When an area of interest is detected using the absolute capacitive sensing techniques, the processing system performs targeted transcapacitance sensing using a selected subset of the sensor electrodes in the area of interest.

Abstract translation: 本文描述的实施例包括具有电容感测装置，处理系统和用于使用电容感测装置检测输入对象的存在的方法的显示装置。 在一个实施例中，显示装置包括以矩阵形式布置的多个传感器电极。 处理系统利用传感器电极的矩阵执行绝对电容感测。 当使用绝对电容感测技术检测到感兴趣的区域时，处理系统使用感兴趣区域中的选定的传感器电极子集来执行目标反向感测。