Touch panel and touch sensing method thereof
AssigneeChunghwa Picture Tubes, Ltd.
InventorsMing-Chi Weng, Yun-Chih Chen, Hung-Hsiang Chen
Life of this patent
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Abstract
A touch panel includes a substrate, a plurality of first traces, an insulation layer, a plurality of second traces, and a microcontroller. The first traces are disposed over the substrate, the insulation layer is disposed over the first traces, and the second traces are disposed over the insulation layer. The microcontroller is electrically connected to the first traces and the second traces, and is operable to control the first traces and/or the second traces so that the first traces and/or the second traces form open loops or closed loops. Furthermore, a touch sensing method is also disclosed herein.
Claims13
A touch panel, comprising:
- a substrate;
- a plurality of first traces disposed on the substrate, wherein each of the first traces comprises:
- a first line comprising a first terminal and a second terminal;
- and
- a second line comprising a first terminal and a second terminal, wherein the second terminal of the first line is electrically connected to the second terminal of the second line;
- an insulation layer disposed on the first traces;
- a plurality of second traces disposed on the insulation layer, wherein each of the second traces comprises:
- a third line comprising a first terminal and a second terminal;
- and
- a fourth line comprising a first terminal and a second terminal, wherein the second terminal of the third line is electrically connected to the second terminal of the fourth line;
- and
- a microcontroller electrically connected to the first terminals of the first lines, the second lines, the third lines and the fourth lines is operable to control the second lines and/or the fourth lines so that the first traces and/or the second traces form open loops or closed loops, wherein the microcontroller received a capacitance variation value through the first lines and/or the third lines when the open loops are formed, the microcontroller received an electromagnetic signal through the first lines and/or the third lines when the closed loops are formed.
A touch sensing method for use in a touch panel, wherein the touch panel comprises a substrate, a plurality of first traces, an insulation layer and a plurality of second traces, wherein the first traces are disposed on the substrate, the insulation layer is disposed on the first traces, and the second traces are disposed on the insulation layer, wherein the touch sensing method comprises the following steps:
- disposing the first traces to form open loops and disposing the second traces to form closed loops;
- receiving a capacitance variation value through the first traces or receiving an electromagnetic signal through the second traces;
- determining whether the capacitance variation value or the electromagnetic signal has been received,
- if the capacitance variation value has been received, disposing the second traces to form closed loops;
- receiving the electromagnetic signal through the second traces;
- and
- determining whether the electromagnetic signal is received,
- if the electromagnetic signal has been received, disposing the first traces and the second traces to form closed loops and performing an electromagnetic signal detecting and positioning process.
A touch panel, comprising:
- a substrate;
- a plurality of first traces disposed on the substrate, wherein each of the first traces comprises:
- a first line comprising a first terminal and a second terminal;
- a second line comprising a first terminal and a second terminal, wherein the second terminal of the first line is electrically connected to the second terminal of the second line;
- and
- a first switch electrically connected to the second line thereof in series;
- an insulation layer disposed on the first traces;
- a plurality of second traces disposed on the insulation layer, wherein each of the second traces comprises:
- a third line comprising a first terminal and a second terminal;
- a fourth line comprising a first terminal and a second terminal, wherein the second terminal of the third line is electrically connected to the second terminal of the fourth line;
- and
- a second switch electrically connected to the fourth line thereof in series;
- and
- a microcontroller electrically connected to the first switch of each of the first traces and the second switch of each of the second traces, wherein the microcontroller is operable to control the first switch of each of the first traces and/or the second switch of each of the second traces so that each of the first traces and/or each of the second traces forms an open loop or a closed loop.
Dependencies are inferred from the claim text.