公开(公告)号：US20170006245A1

公开(公告)日：2017-01-05

申请号：US14788532

申请日：2015-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Arash AKHAVAN FOMANI ,  Patrick SMITH

IPC: H04N5/376 ,  G06K9/00 ,  H04N5/378

CPC classification number: G06K9/00013 ,  G06K9/0002

Abstract: Embodiments described herein include an input device including an array of sensing pixels configured to sense an input object in a sensing region, each of the sensing pixels including a sense element. Each of the sensing pixels also includes a first transistor, wherein the first transistor includes a gate terminal connected to a row select line and a second terminal connected to the sense element. Each of the sensing pixels also includes a non-linear circuit element, wherein the non-linear circuit element includes a first terminal connected to the sense element and the second terminal of the first transistor, and wherein the non-linear circuit element further includes a second terminal connected to a column output line.

Abstract translation: 本文描述的实施例包括输入设备，其包括被配置为感测感测区域中的输入对象的感测像素的阵列，每个感测像素包括感测元件。 每个感测像素还包括第一晶体管，其中第一晶体管包括连接到行选择线的栅极端子和连接到感测元件的第二端子。 每个感测像素还包括非线性电路元件，其中非线性电路元件包括连接到感测元件的第一端子和第一晶体管的第二端子，并且其中非线性电路元件还包括一个 第二端子连接到列输出线。

公开(公告)号：US20180204037A1

公开(公告)日：2018-07-19

申请号：US15612250

申请日：2017-06-02

Applicant: SYNAPTICS INCORPORATED

Inventor： Kirk HARGREAVES ,  Arash AKHAVAN FOMANI ,  Patrick SMITH

IPC: G06K9/00

CPC classification number: G06K9/0002

Abstract: Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. When performing code division multiplexing (CDM), multiple sensor electrodes are coupled to the same sensor module. As such, the sensor module generates a measurement that represents the sum of the charges on the sensor electrodes rather than an individual charge on a single sensor electrode. By repeatedly sensing multiple sensor electrodes in parallel, the input device can determine a change of capacitance for each individual sensor electrode.

公开(公告)号：US20180204036A1

公开(公告)日：2018-07-19

申请号：US15406109

申请日：2017-01-13

Applicant: SYNAPTICS INCORPORATED

Inventor： Arash AKHAVAN FOMANI ,  Kirk HARGREAVES ,  Patrick SMITH

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G06F3/0416 ,  G06F3/044 ,  G06F3/047

Abstract: Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. During a charge stage, the input device applies a charging voltage to neighboring sensor electrodes in the array. The input device then drives the neighboring sensor electrodes to a reference voltage and measures the amount of charge accumulated on at least one of the sensor electrodes. Because of the parasitic capacitance between the neighboring electrodes, driving these electrodes (even the ones not being measured) to the same charging and reference voltages reduces the effect of the parasitic capacitance on the capacitive sensing measurement. Thus, during the read stage, the measured charge is affected primarily by the capacitance between the sensor electrodes and an input object (e.g., a finger).

公开(公告)号：US20170003770A1

公开(公告)日：2017-01-05

申请号：US14788499

申请日：2015-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Arash AKHAVAN FOMANI ,  Patrick SMITH

IPC: G06F3/041 ,  G06K9/00

CPC classification number: G06F3/041 ,  G06K9/0004

Abstract: Embodiments described herein include an input device including an array of sensing pixels configured to sense an input object in a sensing region. Each of the sensing pixels includes a sense element and a first transistor, wherein the first transistor includes a gate terminal connected to a row select line and a second terminal connected to the sense element. Each of the sensing pixels also includes a second transistor, wherein the second transistor includes a gate terminal connected to the sense element and the second terminal of the first transistor, and wherein the second transistor further includes a second terminal connected to a column output line.

Abstract translation: 本文描述的实施例包括输入设备，其包括被配置为感测感测区域中的输入对象的感测像素的阵列。 每个感测像素包括感测元件和第一晶体管，其中第一晶体管包括连接到行选择线的栅极端子和连接到感测元件的第二端子。 每个感测像素还包括第二晶体管，其中第二晶体管包括连接到感测元件的栅极端子和第一晶体管的第二端子，并且其中第二晶体管还包括连接到列输出线的第二端子。

公开(公告)号：US20170038866A1

公开(公告)日：2017-02-09

申请号：US14975042

申请日：2015-12-18

Applicant: SYNAPTICS INCORPORATED

Inventor： Arash AKHAVAN FOMANI ,  Patrick SMITH

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/047

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/047

Abstract: This disclosure generally provides an input device that includes a plurality of sensor modules coupled to sensor electrodes arranged in a matrix that measure capacitive sensing signals corresponding to the electrodes. To mitigate the effect of capacitive coupling between a sensor electrode being sensed and its neighbors in the matrix, the input device drives the neighboring electrodes in a same manner as the selected sensor electrode so that there is little or no voltage difference between the sensor electrode being sensed and its neighbors. For example, during a drive phase, the electrode being sensed and the neighboring electrodes are coupled to the same charge voltage. During a read phase, the neighboring electrodes and the selected electrode may be coupled to the same reference voltage—e.g., ground—so there is again no voltage difference between the electrodes.

Abstract translation: 本公开通常提供一种输入装置，其包括耦合到布置成矩阵的传感器电极的多个传感器模块，其测量对应于电极的电容感测信号。 为了减轻正在感测的传感器电极和其矩阵中的邻居之间的电容耦合的影响，输入装置以与选择的传感器电极相同的方式驱动相邻电极，使得传感器电极之间几乎没有或没有电压差 感觉及其邻居。 例如，在驱动阶段期间，被感测的电极和相邻的电极耦合到相同的充电电压。 在读取阶段期间，相邻电极和所选择的电极可以耦合到相同的参考电压，例如接地，因此电极之间再次没有电压差。

公开(公告)号：US20170003777A1

公开(公告)日：2017-01-05

申请号：US14788604

申请日：2015-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Arash AKHAVAN FOMANI ,  Kirk HARGREAVES ,  Patrick SMITH ,  Petr SHEPELEV

IPC: G06F3/044 ,  G06K9/00

CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06K9/0002

Abstract: Embodiments described herein include a method for operating an input device by applying a charge voltage to a sense element through a first transistor that is between the sense element and a column output line and a first switch that is between the column output line and a drive voltage. The method also includes storing an electric charge on the sense element, wherein the electric charge comprises a magnitude corresponding to a feature of an input object. The method also includes driving a gate terminal of the first transistor low and disconnecting the charge voltage via the first switch. The method further includes transferring the electric charge to a feedback capacitor.

Abstract translation: 本文描述的实施例包括一种用于通过在感测元件和列输出线之间的第一晶体管和位于列输出线和驱动电压之间的第一开关向感测元件施加充电电压来操作输入器件的方法 。 该方法还包括在感测元件上存储电荷，其中电荷包括与输入对象的特征对应的幅度。 该方法还包括将第一晶体管的栅极端子驱动为低电平，并通过第一开关断开充电电压。 该方法还包括将电荷转移到反馈电容器。