US 9,791,990 B2 · Multi-sensor touch integrated display driver configuration for capacitive sensing devices

Abstract

Embodiments of the disclosure generally provide an integrated control system having an integrated controller that is configured to provide both display updating signals to a display device and a capacitive sensing signal to a sensor electrode that is disposed within the integrated input device. The internal and/or external signal routing configurations described herein can be adapted to reduce signal routing complexity typically found in conventional devices and reduce the effect of electrical interference created by the capacitive coupling formed between the display routing, capacitive sensing routing and/or other components within the integrated control system. Embodiments can also be used to reduce electromagnetic interference (EMI) on the display and touch sensing signals received, transmitted and processed within the integrated control system.

Claims20

Dependent claims

An integrated controller for use in an input device comprising a display device integrated with a sensing device, the integrated controller comprising:

display circuitry coupled to a plurality of source driver output pads, wherein the source driver output pads are configured to transfer a display updating signal to a display within the input device, wherein the source driver output pads are disposed along a first side of the integrated controller;
and
capacitive sensing circuitry coupled to a plurality of capacitive sensing pads that are configured to transfer capacitive sensing signals to a plurality of sensor electrodes to perform capacitive sensing, wherein at least one the plurality of capacitive sensing pads is disposed along a second side of the integrated controller, wherein a length of the first side is longer than a length of the second side.

A display device comprising:

a plurality of sensor electrodes, each of the plurality of sensor electrodes comprises at least one common electrode of a plurality of common electrodes of a display device, wherein the plurality of common electrodes are configured for display updating and capacitive sensing;
and
an integrated controller coupled to the plurality of sensor electrodes, the integrated controller further comprising:
a plurality of source driver output pads coupled to a plurality of source electrodes of the display device, wherein the plurality of source driver output pads are routed along a first side of the integrated controller;
and
a plurality of capacitive sensing pads coupled to the plurality of sensor electrodes, wherein the plurality of capacitive sensing pads transfer capacitive sensing signals from capacitive sensing circuitry to the plurality of sensor electrode to perform capacitive sensing, and wherein at least one of the plurality of capacitive sensing pads is disposed along a second side of the integrated controller, wherein a length of the first side is longer than a length of a second side.

3 more elements

Dependencies are inferred from the claim text.

Multi-sensor touch integrated display driver configuration for capacitive sensing devices

Life of this patent

Multi-sensor touch integrated display driver configuration for capacitive sensing devices

Life of this patent

Abstract

Claims20