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公开(公告)号：US20170075469A1
公开(公告)日：2017-03-16
申请号：US14852847
申请日：2015-09-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Gee Heng Loh , Ravi Bhatia , Ys On
CPC classification number: G06F3/0416 , G06F3/044 , G06F2203/04108
Abstract: Disclosed is a touch sensor and method for detecting a touch in a capacitive touchscreen application, wherein the touch sensor is capable of distinguishing between a finger hovering above the touch sensor and a touch from a stylus having a small contact surface area without having to adjust the sensitivity of the touch sensor. The touch sensor includes a first sensing electrode, a transmit electrode, and a second sensing electrode, wherein the second sensing electrode is positioned substantially around the perimeter of the inner circuitry (i.e., transmit electrode and first sensing electrode). A touch is detected by sensing changes in a first capacitance between the transmit electrode and first sensing electrode and a second capacitance between the transmit electrode and second sensing electrode. The changes in the first and second capacitances are compared to determine whether the changes in the capacitances are due to a finger hover or a touch.
Abstract translation: 公开了用于检测电容式触摸屏应用中的触摸的触摸传感器和方法，其中触摸传感器能够区分在触摸传感器上方悬停的手指和具有小接触表面积的触针的触摸，而不必调整 触摸传感器的灵敏度。 触摸传感器包括第一感测电极，发射电极和第二感测电极，其中第二感测电极基本上围绕内部电路（即发射电极和第一感测电极）的周边定位。 通过感测发射电极和第一感测电极之间的第一电容的变化以及发射电极和第二感测电极之间的第二电容来检测触摸。 比较第一和第二电容的变化，以确定电容的变化是由于手指悬停还是触摸。
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公开(公告)号：US10942601B2
公开(公告)日：2021-03-09
申请号：US16532872
申请日：2019-08-06
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Gee-Heng Loh , Ravi Bhatia , Ys On
Abstract: A capacitive sensing structure includes a first sensing electrode located in a first layer for sensing a first capacitance and producing a first sense signal indicative of the sensed first capacitance. A transmit electrode is located in the first layer and positioned surrounding 90%+ of a perimeter of the first sensing electrode. A second sensing electrode is located in the first layer and positioned surrounding 90%+ of a perimeter of the transmit electrode, the second sensing electrode to sense a second capacitance and produce a second sense signal indicative of the sensed second capacitance. Controller circuitry receives the first and second sense signals, compares a change in the sensed first capacitance to a change in the sensed second capacitance, and produces an output signal indicative of a user touch based upon the comparison between the change in the sensed first capacitance and the change in the sensed second capacitance.
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公开(公告)号：US20140092053A1
公开(公告)日：2014-04-03
申请号：US13632241
申请日：2012-10-01
Applicant: STMICROELECTRONICS ASIA PACIFIC PTE LTD
Inventor： Chee Yu Ng , Ys On , Ravi Bhatia
CPC classification number: G06F3/044 , G06F3/0416 , G06F3/0488 , G06F2203/04108
Abstract: A display screen is configured to display information with a selectable one of many information display orientations. A touch screen panel of a touch screen system is positioned to overlie the display screen. The touch screen system operates to make a proximate touch detection, for example by a body part or stylus. A controller receives the proximate touch information from the capacitive touch screen system and interprets the proximate touch information to determine an indication from a user of a selection of an information display orientation for the display screen. The controller then controls the display screen to present information in accordance with the user selected information display orientation. The user selected information display orientation via the proximate touch detection will over-ride any other selected information display orientation such as a selection made in response to an orientation identified by an accelerometer or other gravity influenced sensor.
Abstract translation: 显示屏被配置为利用许多信息显示取向中的可选择的一个来显示信息。 触摸屏系统的触摸屏面板位于显示屏幕的上方。 触摸屏系统用于例如通过身体部分或触控笔进行近似触摸检测。 控制器接收来自电容式触摸屏系统的接近触摸信息，并且解释接近触摸信息以确定用户对显示屏幕的信息显示取向的选择的指示。 然后，控制器根据用户选择的信息显示方向控制显示屏幕呈现信息。 经由近程触摸检测的用户选择的信息显示取向将覆盖任何其他选择的信息显示方向，例如响应于由加速度计或其他重力影响的传感器识别的方位而进行的选择。
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公开(公告)号：US10416802B2
公开(公告)日：2019-09-17
申请号：US14852847
申请日：2015-09-14
Applicant: STMicroelectronics Asia Pacific Pte Ltd
Inventor： Praveesh Chandran , Gee-Heng Loh , Ravi Bhatia , Ys On
Abstract: Disclosed is a touch sensor and method for detecting a touch in a capacitive touchscreen application, wherein the touch sensor is capable of distinguishing between a finger hovering above the touch sensor and a touch from a stylus having a small contact surface area without having to adjust the sensitivity of the touch sensor. The touch sensor includes a first sensing electrode, a transmit electrode, and a second sensing electrode, wherein the second sensing electrode is positioned substantially around the perimeter of the inner circuitry (i.e., transmit electrode and first sensing electrode). A touch is detected by sensing changes in a first capacitance between the transmit electrode and first sensing electrode and a second capacitance between the transmit electrode and second sensing electrode. The changes in the first and second capacitances are compared to determine whether the changes in the capacitances are due to a finger hover or a touch.
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