MATRIX RESISTIVE TOUCH DEVICE

• US 20100164899A1
• Filed: 12/25/2008
• Published: 07/01/2010
• Est. Priority Date: 12/25/2008
• Status: Abandoned Application

• Current Assignee: Eturbotouch Technology Inc.
• Original Assignee: Eturbotouch Technology Inc.
• Inventors: Wu, Ming-Tsung, Wu, Cheng-Ko
• Application Number:
  US12/344,269
• Publication Number:
  US 20100164899A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A matrix resistive touch device includes a first substrate, a spacer layer, and a second substrate. The first substrate is used for detecting a position of an input point in a first direction. The second substrate is used for detecting the position of the input point in a second direction. The first substrate has a conductive layer. The conductive layer has a voltage difference in the first direction. The second substrate has a plurality of electrodes. The plurality of electrodes is perpendicular to the second direction. The spacer layer is located between the first substrate and the second substrate for separating the conductive layer and the plurality of electrodes.

Claims

1. A matrix resistive touch device, comprising:

a first substrate, for detecting a position of an input point in a first direction;

a first conductive layer, formed on the first substrate, having a voltage difference in the first direction;

a second substrate, for detecting the position of the input point in a second direction;

a plurality of electrodes, formed on the second substrate, perpendicular to the second direction; and

a spacer layer, formed between the first substrate and the second substrate, for separating the conductive layer and the plurality of electrodes.

2. The touch device of claim 1, further comprising:

a complex programmable logic device (CPLD), for processing a short voltage of the plurality of electrodes and the conductive layer so as to generating analog signals of the first direction and digital signals of the second direction;

an analog to digital (A/D) converter, for converting the analog signals of the first direction to digital signals of the first direction; and

a micro controller unit (MCU), for generating coordinate values of the input point according to the digital signals of the first direction and the digital signals of the second direction.

3. The touch device of claim 1, wherein the conductive layer is an indium tin oxide (ITO) transparent conductive layer.

4. The touch device of claim 1, wherein the plurality of electrodes is formed by etching an indium tin oxide (ITO) transparent conductive layer.

5. The touch device of claim 1, wherein the plurality of electrodes has a common voltage.

6. The touch device of claim 1, wherein the spacer layer is a dot spacer.

7. A matrix resistive touch device, comprising:

a first substrate, for detecting a position of an input point in a first direction;

a plurality of first electrodes, formed on the second substrate, having a first voltage difference in the first direction;

a second substrate, for detecting the position of the input point in a second direction;

a plurality of second electrodes, formed on the second substrate, having a second voltage difference in the second direction; and

a spacer layer, formed between the first substrate and the second substrate, for separating the plurality of first electrodes and the plurality of second electrodes.

8. The touch device of claim 7, further comprising:

a complex programmable logic device (CPLD), for processing a short voltage of the plurality of first electrodes and the plurality of second electrodes so as to generating analog signals of the first direction and analog signals of the second direction;

an analog to digital (A/D) converter, for converting the analog signals of the first direction and the analog signals of the second direction to digital signals of the first direction and digital signals of the second direction respectively; and

a micro controller unit (MCU), for generating coordinate values of the input point according to the digital signals of the first direction and the digital signals of the second direction.

9. The touch device of claim 7, wherein the plurality of first electrodes and the plurality of second electrodes are formed by etching (ITO) transparent conductive layers.

10. The touch device of claim 7, wherein the plurality of first electrodes is perpendicular to the first direction and the plurality of second electrodes is perpendicular to the second direction.

11. The touch device of claim 7, wherein the spacer layer is a dot spacer.