Matrix sensor for image touch sensing

a technology of image touch and matrix sensor, which is applied in the field of capacitive touch sensing devices, can solve the problems of ineffective compact electric fields of transcapacitive sensing methods, and achieve the effect of improving absolute sensing

Inactive Publication Date: 2015-04-02
SYNAPTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, transcapacitive sensing methods generally rely on compact electric fields which are not very effective for detecting the presence or approach of objects spaced from the surface of the proximity sensor device.

Method used

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  • Matrix sensor for image touch sensing
  • Matrix sensor for image touch sensing
  • Matrix sensor for image touch sensing

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Embodiment Construction

[0029]The following detailed description is merely exemplary in nature and is not intended to limit the invention or the application and uses of the invention. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0030]Various embodiments of the present technology provide input devices and methods for improving usability. Particularly, embodiments described herein advantageously utilized absolute sensing techniques to provide good input object location within a sensing region, even in applications where multiple input objects are present or when the input object is in motion. Additionally, some other embodiments provide for switching between absolute and transcapacitive sensing mode, thus allowing the appropriate sensing mode to be utilized to best determine the position and motion of one or more objects within the sensing region.

[0031]FIG. 1 is a ...

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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, all of which include a grid electrode for improved absolute sensing. Other embodiments 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, wherein the capacitive sensing device includes a matrix of discrete sensor electrodes.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]Embodiments of the present invention generally relate to a method and apparatus for touch sensing, and more specifically, a capacitive touch sensing device having grid electrodes for improved absolute sensing, and methods for using the same.[0003]2. Description of the Related Art[0004]Input devices including proximity sensor devices (also commonly called touchpads or touch sensor devices) are widely used in a variety of electronic systems. A proximity sensor device typically includes a sensing region, often demarked by a surface, in which the proximity sensor device determines the presence, location and / or motion of one or more input objects. Proximity sensor devices may be used to provide interfaces for the electronic system. For example, proximity sensor devices are often used as input devices for larger computing systems (such as opaque touchpads integrated in, or peripheral to, notebook or desktop computers). Proxim...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): G06F3/044
CPCG06F2203/04112G06F3/044G06F2203/04101G06F2203/04107G06F3/0445G06F3/04184G06F3/041662G06F3/0448G06F3/0443G06F3/0412G06F3/0418G06F2203/04111G06F2203/04104G06F2203/04106
InventorSHEPELEV, PETRLUDDEN, CHRISTOPHER A.LUKANC, JEFFREYMOREIN, STEPHEN L.SEMERARO, GREG P.REYNOLDS, JOSEPH KURTH
OwnerSYNAPTICS INC