TOUCH SCREEN PANEL

• US 20170097703A1
• Filed: 10/05/2016
• Published: 04/06/2017
• Est. Priority Date: 10/05/2015
• Status: Active Grant

• Current Assignee: G2touch Co Ltd
• Original Assignee: G2touch Co Ltd
• Inventors: LEE, Sung Ho
• Granted Patent: US 9,904,429 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

Disclosed herein is a touch screen panel detecting a capacitive touch input applied by a finger or a touch input means having conductivity like the finger. According to the present invention, the touch screen panel includes: a touch pad forming touch electrostatic capacity (Ct) between the touch pad and the touch input means; and a sensor signal line connecting the touch pad and a touch integrated circuit (IC) to transmit a Ct signal changed on the touch pad to the touch IC, wherein when a resistance value varying with a distance between the touch pad and the touch IC is lower than or equal to a set value, the sensor signal line forms a resistance compensation pattern compensating for the resistance value.

Claims

1. A touch screen panel sensing a generation of touch electrostatic capacity Ct by an approach of a touch input means, including a finger or a touch by the touch input means, the touch screen panel comprising:

a touch pad configured to form the touch capacitance Ct between the touch pad and the touch input means; and

a sensor signal line connecting the touch pad and a touch integrated circuit (IC) to transmit a Ct signal changed on the touch pad to the touch IC,

wherein the sensor signal line is provided with a resistance compensation pattern compensating for a resistance value according to a distance between the touch pad and the touch IC, and

the resistance compensation pattern includes at least one of an internal resistance compensation pattern formed inside the touch pad and an external resistance compensation pattern formed outside the touch pad.

2. The touch screen panel of claim 1, wherein as the resistance value to be compensated based on a set value of the sensor signal line is increased, a length of the resistance compensation pattern is getting longer.

3. The touch screen panel of claim 1, wherein the sensor signal line has a wiring width increased in proportion to a connection distance between the touch pad and the touch IC.

4. The touch screen panel of claim 3, wherein a spacing between the sensor signal lines is changed according to a wiring width of a sensor signal line having the wider wiring width of the two adjacent sensor signal lines.

5. The touch screen panel of claim 1, wherein an area of the touch pad is increased in proportion to a distance from the touch IC.

6. The touch screen panel of claim 1, wherein the touch screen panel has a matrix form in which the touch pad is continuously disposed vertically to form one column that is disposed in a plurality of columns or the touch pad is continuously disposed horizontally to form one row that is disposed in a plurality of rows.

7. The touch screen panel of claim 6, wherein the sensor signal lines connected to a plurality of touch pads disposed in the same column or the same row are formed so that lengths of adjacent resistance compensation patterns are different from each other according to the distance between the respective touch pads and the touch IC.

8. The touch screen panel of claim 6, wherein adjacent columns or adjacent rows are formed to intersect each other, having a predetermined offset.

9. The touch screen panel of claim 8, wherein a shape of resistance compensation patterns formed in odd-numbered columns and a shape of resistance compensation patterns formed in even-numbered columns in a disposition order of the plurality of columns are different from each other, and

a shape of resistance compensation patterns formed in odd-numbered rows and a shape of resistance compensation patterns formed in even-numbered rows in a disposition order of the plurality of rows are different from each other.

10. The touch screen panel of claim 1, wherein the resistance compensation pattern has a meander shape.

11. The touch screen panel of claim 1, wherein the resistance compensation pattern prevents electrostatic discharge (ESD) introduced into the touch screen panel or overvoltage generated from the touch IC.

12. The touch screen panel of claim 1, wherein the touch pad includes a touch pattern in a state in which diamond-shaped basic touch patterns are disposed in a row

13. The touch screen panel of claim 12, wherein the touch pattern is formed by repeatedly patterning a transparent conductive material in a plurality of fine patterns.

14. The touch screen panel of claim 1, wherein the sensor signal line is formed by repeatedly patterning a transparent conductive material in a plurality of fine patterns.

15. The touch screen panel of claim 14, wherein the transparent conductive material is any one of ITO, CNT, ATO, and IZO.