Touch window and touch device

Patent metadata

Field	Value
Publication number	US-2016378256-A1
Application number	US-201415112091-A
Country	US
Kind code	A1
Filing date	Dec 26, 2014
Priority date	Jan 17, 2014
Publication date	Dec 29, 2016
Grant date	—

Abstract

A touch window includes a substrate, and a sensor part provided on the substrate and performing a sensing process through a time domain reflectrometry. The sensor part includes a conductive pattern.

First claim

1 . A touch window comprising:
a substrate; and a sensor part disposed on the substrate to process a sensing process through a time domain reflectometry, wherein the sensor part comprises a conductive pattern.

2 . The touch window of claim 1 , wherein the conductive pattern comprises a conductive pattern opening part and a conductive pattern line part.

3 . The touch window of claim 1 , further comprising a ground electrode adjacent to the sensor part.

4 . A touch window comprising:
a substrate; and a sensor part disposed on the substrate to perform a sensing process through a time domain reflectometry, wherein the sensor part comprises: a first sensor part to receive a first signal; and a second sensor part adjacent to the first sensor part to receive a second signal.

5 . The touch window of claim 4 , wherein the first sensor part comprises a first sub sensor part and a second sub sensor part having directionalities different from each other.

6 . The touch window of claim 4 , wherein, when a first point of the substrate is touched, variation of first impedance occurs at a first point of the first sensor part, variation of second impedance occurs at a first point of the second sensor part, and the first impedance is different from the second impedance.

7 . A touch device comprising:
a screen section; a peripheral section to surround the screen section; and a touch window in at least one of the screen section and the peripheral section, wherein the touch window comprises a sensor part to sense a touch position or a touch pressure.

8 . The touch device of claim 7 , wherein the sensor part senses the touch position through a time domain reflectometry.

9 . The touch device of claim 7 , wherein the sensor part has a length varied depending on use of a user.

10 . The touch device of claim 7 , wherein the sensor part comprises:
a sensing electrode in the screen section; and a sensor part in the peripheral section, and wherein the sensing electrode and the sensor part have patterns different from each other.

11 . The touch window of claim 1 , wherein the sensor part comprises a mesh pattern.

12 . The touch window of claim 1 , wherein the sensor part comprises a first sensor part and a second sensor part having directionalities different from each other.

13 . The touch window of claim 4 , wherein the first and second signals progress in direction opposite to each other.

14 . The touch window of claim 4 , wherein the first and second signals progress in the same direction.

15 . The touch device of claim 7 , wherein the sensor part senses the touch pressure by a length variation of the sensor part.

16 . The touch device of claim 7 , wherein the sensor part is disposed on the screen section and the peripheral section.

17 . The touch device of claim 7 , wherein the sensor part senses touch gesture.

18 . The touch device of claim 7 , wherein the peripheral section is opaque.

19 . The touch window of claim 7 , wherein the sensor part comprises a mesh pattern.

20 . The touch window of claim 7 , wherein the peripheral part is the rim of a smart phone screen when the display device is a smart phone.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Sang Young
• Lee Tae Jin

Classifications

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F1/1692

  the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders · CPC title

• G06F2203/04105

  Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position · CPC title