Touch detecting panel

• US 10,248,265 B2
• Filed: 12/31/2014
• Issued: 04/02/2019
• Est. Priority Date: 12/31/2014
• Status: Active Grant

• Current Assignee: Nihat Deniz Bayramoglu
• Original Assignee: Nihat Deniz Bayramoglu
• Inventors: Bayramoglu, Nihat Deniz
• Primary Examiner(s): Yodichkas, Aneeta
• Application Number:
  US14/588,347
• Publication Number:
  US 20160188034A1
• Time in Patent Office: 1,553 Days
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

The present invention is a touch detection panel that uses capacitance changes between electrodes and changes thereof to determine a position of touch. The touch panel can be used in commercial applications where using a finger, stylus, or other object is the desired method of interface with an electronic system. The touch panel includes conductive electrodes and conductive lines connecting the conductive electrodes. The conductive electrodes themselves can be made of opaque conductive material, substantially transparent conductive material, or transparent conductive material depending on the requirements of an application. The Touch panel is connected to a controller that applies current and/or voltage to the touch panel and senses current and/or voltage from the touch panel to determine either single or multiple touch locations.

Claims

1. A capacitive touch panel, comprising:

a plurality of driving electrodes, wherein each driving electrode extends along a first direction;

a plurality of columns of sensing electrodes, wherein each column is orientated along a second direction parallel with the first direction, and each sensing electrode extends along the second direction;

a plurality of first conductive lines connected to the plurality of driving electrodes; and

a plurality of second conductive lines connected to the plurality of columns of sensing electrodes, wherein one second conductive line corresponds to one sensing electrode,

wherein each driving electrode and each column of sensing electrodes are arranged alternatively,

wherein all the first conductive lines and all the second conductive lines are adapted for connecting to a controller;

wherein the plurality of driving electrodes are capable of generating an electrical field when an alternating current is applied to the plurality of driving electrodes and the electric field causes capacitive reactance to be generated between the plurality of driving electrodes and the plurality of columns of sensing electrodes to detect at least one touch location on the capacitive touch panel.

2. The capacitive touch panel of claim 1, wherein each driving electrode is longer than each sensing electrode.

3. The capacitive touch panel of claim 2, wherein all the driving electrodes and all the sensing electrodes are made of a transparent material.

4. The capacitive touch panel of claim 3, wherein all the driving electrodes and all the sensing electrodes are made of indium tin oxide.

5. The capacitive touch panel of claim 2, wherein all the driving electrodes and all the sensing electrodes are made of an opaque material.

6. The capacitive touch panel of claim 5, wherein all the driving electrodes and all the sensing electrodes are made of silver, copper or gold.

7. The capacitive touch panel of claim 2, wherein dimensions of the driving electrodes are adapted to provide a capacitance where a signal to noise ratio at an output of the capacitive touch panel is maximized.

8. The capacitive touch panel of claim 1, wherein the plurality of driving electrodes and the plurality of columns of sensing electrodes are placed on a top layer of a substrate, and the plurality of first conductive lines and the plurality of second conductive lines are placed on a bottom layer of the substrate to form a dual layer structure;

wherein electrical connections between the plurality of first conductive lines and the plurality of driving electrodes, and electrical connections between the plurality of second conductive lines and the plurality of columns of sensing electrodes are provided through a plurality of via holes filled with a conductive material.