Active-matrix touchscreen
AssigneeX-Celeprint Limited
InventorRonald S. Cok
Life of this patent
Estimating the term…
Abstract
An active-matrix touchscreen includes a substrate, a system controller, and a plurality of spatially separated independent touch elements disposed on the substrate. Each touch element includes a touch sensor and a touch controller circuit that provides one or more sensor-control signals to the touch sensor and receives a sense signal responsive to the sensor-control signals from the touch sensor. Each touch sensor operates independently of any other touch sensor.
Claims32
An active-matrix touchscreen having a touch area, comprising:
- a substrate;
- a system controller;
- a plurality of spatially separated independent touch elements disposed in a two-dimensional array within the touch area on and in contact with the substrate, each touch element comprising:
- a mutual-capacitive touch sensor comprising at least two electrical conductors in a common layer on and in contact with the substrate, the two electrical conductors forming a capacitor;
- and
- a touch controller circuit on and in contact with the substrate for providing one or more sensor-control signals to the touch sensor and for receiving a sense signal responsive to the one or more sensor-control signals from the touch sensor, wherein each touch sensor operates independently of any other touch sensor of the plurality of touch elements, wherein the two electrical conductors of each touch element are electrically separate from the two electrical conductors of any other touch element.
(canceled)
The display of claim 81, wherein the touch sensor is a capacitive touch sensor, an optical touch sensor, an acoustic touch sensor, an inductive touch sensor, a piezo-electric sensor, or a resistive touch sensor.
The display of claim 81, wherein the touch sensor is a capacitive touch sensor and comprises one or more capacitors, each of the one or more capacitors connected to the touch controller of the respective touch element.
14-16. (canceled)
The display of claim 81, wherein the touch sensor is an optical touch sensor and the optical touch sensor comprises a light-sensitive semiconductor diode.
18-20. (canceled)
23-25. (canceled)
28-40. (canceled)
The display of claim 81, comprising:
- a system controller;
- and
- a plurality of touch controller circuits, each touch controller circuit associated with a touch sensor and disposed on the substrate for providing one or more sensor-control signals to the touch sensor and for receiving a sense signal responsive to the one or more sensor-control signals from the touch sensor, wherein each touch sensor operates independently of any other touch sensor of the plurality of touch elements, each touch controller circuit and associated touch sensor forming a touch element.
42-46. (canceled)
48-64. (canceled)
66-80. (canceled)
A display, comprising:
- a substrate;
- a plurality of inorganic light-emitting diodes disposed exclusively on and in contact with the substrate;
- and
- a plurality of touch sensors exclusively on and in contact with the substrate, wherein the plurality of inorganic light-emitting diodes and the plurality of touch sensors are disposed on a common surface of the substrate.
82-130. (canceled)
Dependencies are inferred from the claim text.