US 2014/0191978 A1 · BORDERLESS TOUCH PANEL DESIGN

Abstract

A borderless touchscreen panel includes a first conductive layer having rows of capacitive sensors and receiving traces, and a second conductive layer having columns of sensor bars and transmitting traces. The capacitive sensors are coupled to control circuitry via the receiving traces, and the sensor bars are coupled to the control circuitry via the transmitting traces. Peripheral sensor bars are disposed over the receiving traces such that the receiving traces can be routed within an active portion of the borderless touchscreen panel without obstructing its touch-detection capabilities. Furthermore, the receiving traces are comprised of a transparent material such as indium tin oxide, and therefore do not obstruct the display capabilities of the active portion. Thus, there is no need for an inactive border region since the receiving traces are disposed within the active portion without obstructing either the touch-detection or display capabilities of the borderless touchscreen panel.

Claims17

Dependent claims

A borderless touchscreen panel, comprising:

a plurality of transmit electrodes extending in a first direction, including a first transmit electrode and a last transmit electrode;
and
a plurality of sensing electrodes extending in a second direction substantially perpendicular to the first direction,
wherein a first subset of the plurality of sensing electrodes are coupled to receiving traces routed beneath the first transmit electrode and extending in the first direction along a length of the first transmit electrode, and a second subset of the plurality of sensing electrodes are coupled to receiving traces routed beneath the last transmit electrode and extending in the first direction along a length of the last transmit electrode.

1 more element

A borderless touchscreen panel, comprising:

a plurality of rows of series-connected sensing electrodes;
a plurality of transmit electrodes extending in a first direction substantially perpendicular to the rows of series-connected sensing electrodes, the plurality of transmit electrodes including:
a last transmit electrode, the last transmit electrode operable during a first mode to receive a first drive signal, and
a first transmit electrode, the first transmit electrode operable during a second mode to receive a second drive signal;
a first set of receiving traces routed beneath the first transmit electrode and extending in the first direction along a length of the first transmit electrode, the first set of receiving traces coupled to a first subset of the plurality of rows of series-connected sensing electrodes and operable during the first mode to provide first sense signals from the first subset of the plurality of series-connected sensing electrodes;
and
a second set of receiving traces routed beneath the last transmit electrode and extending in the first direction along a length of the last transmit electrode, the second set of receiving traces coupled to a second subset of the plurality of rows of series-connected sensing electrodes and operable during the second mode to provide second sense signals from the second subset of the plurality of series-connected sensing electrodes.

4 more elements

Dependencies are inferred from the claim text.

Borderless touch panel design

Life of this patent

Borderless touch panel design

Life of this patent

Abstract

Claims17