Touch sensor integrated type display device

Patent metadata

Field	Value
Publication number	US-9342178-B2
Application number	US-201414580637-A
Country	US
Kind code	B2
Filing date	Dec 23, 2014
Priority date	Aug 11, 2014
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A touch sensor integrated type display device includes gate and data lines, pixel electrodes, and touch electrodes arranged in a matrix with a row direction and a column direction. The touch electrodes include 1 - 1, 1 - 2, 2 - 1 , and 2 - 2 touch electrodes respectively connected to 1 - 1, 1 - 2, 2 - 1 , and 2 - 2 touch routing wires. The 1 - 1 touch routing wire connect 1 - 1 touch electrodes and is arranged in the row direction. The 2 - 1 touch routing wires are respectively connected to 2 - 1 touch electrodes and arranged in the column direction. The 1 - 2 touch routing wire connects 1 - 2 touch electrodes and is arranged parallel to the 1 - 1 touch routing wire. The 2 - 2 touch routing wire connects 2 - 2 touch electrodes and is arranged parallel to the 2 - 1 touch routing wire.

First claim

What is claimed is:

1. A touch sensor integrated type display device, comprising:
a plurality of gate lines and a plurality of data lines which are arranged crossing each other;
a plurality of pixel electrodes respectively disposed in pixel areas defined by the crossing of the plurality of gate lines and the plurality of data lines;
a plurality of touch electrodes arranged in a matrix with a row direction and a column direction, each touch electrode overlapping at least one respective pixel electrode;
a 1 - 1 touch routing wire arranged in the row direction and configured to connect 1 - 1 touch electrodes among the plurality of touch electrodes disposed in a single row and only one of odd numbered columns and even-numbered columns;
a plurality of 2 - 1 touch routing wires arranged in the column direction and respectively connected to 2 - 1 touch electrodes disposed in only one of odd numbered rows and even numbered rows such that the rows includes the row of the 1 - 1 touch routing wire and a single column of the other one of the odd numbered columns and the even-numbered columns that does not include any column of the 1 - 1 electrodes;
a 1 - 2 touch routing wire arranged in parallel with the 1 - 1 touch routing wire and configured to connect 1 - 2 touch electrodes disposed in a single row adjacent to the row of the 1 1 touch electrodes and only the other one of the odd-numbered columns and the even numbered columns that does not include the columns of the 1 - 1 touch electrodes; and
at least one 2 - 2 touch routing wire arranged in parallel with the 2 - 1 touch routing wire and configured to connect 2 - 2 touch electrodes disposed in only the other one of the even numbered rows and the odd numbered rows such that the rows do not include the row of the 1 - 1 touch electrode and a single column of the same one of the odd-numbered columns and the even-numbered columns that includes one of the columns of the 1 - 1 touch electrodes.

2. The touch sensor integrated type display device of claim 1 , wherein the 1 - 1 touch electrodes and the 2 - 1 touch electrodes are alternately disposed on a same row, and the 1 - 2 touch electrodes and the 2 - 2 touch electrodes are alternately disposed on another same row.

3. The touch sensor integrated type display device of claim 2 , wherein each of the plurality of 2 - 2 touch routing wires connects the 2 - 2 touch electrodes disposed on a same column.

4. The touch sensor integrated type display device of claim 1 , further comprising a plurality of thin film transistors disposed at crossings of the plurality of gate lines and the plurality of data lines,
wherein the pixel electrode is disposed on a gate insulating layer covering the plurality of thin film transistors and is connected to a drain electrode of the thin film transistor,
wherein the 2 - 1 and 2 - 2 touch routing wires are disposed on a first passivation layer covering and parallel to the pixel electrode,
wherein the 1 - 1 and 1 - 2 touch routing wires are disposed on a second passivation layer covering the 2 - 1 and 2 - 2 touch routing wires, and
wherein the plurality of touch electrodes are disposed on a third passivation layer covering the 1 - 1 and 1 - 2 touch routing wires.

5. The touch sensor integrated type display device of claim 4 , wherein the 1 - 1 touch routing wire is connected to the 1 - 1 touch electrode through a first contact hole passing through the third passivation layer, and the 1 - 2 touch routing wire is connected to the 1 - 2 touch electrode through a second contact hole passing through the third passivation layer.

6. The touch sensor integrated type display device of claim 5 , wherein the 2 - 1 touch routing wire is connected to the 2 - 1 touch electrode through a third contact hole passing through the second and third passivation layers, and the 2 - 2 touch routing wire is connected to the 2 - 2 touch electrode through a fourth contact hole passing through the second and third passivation layers.

7. The touch sensor integrated type display device of claim 1 , further comprising a plurality of thin film transistors disposed at crossings of the plurality of gate lines and the plurality of data lines,
wherein the 1 - 1 and 1 - 2 touch routing wires are disposed on a same layer as the gate lines in parallel with the gate lines,
wherein the data lines are disposed on a gate insulating layer covering the gate lines formed on a substrate and the 1 - 1 and 1 - 2 touch routing wires,
wherein the pixel electrode is connected to a drain electrode of the thin film transistor formed on the same layer as the data lines,
wherein the 2 - 1 and 2 - 2 touch routing wires are disposed on a first passivation layer covering and parallel to the pixel electrode,
wherein the plurality of touch electrodes are disposed on a second passivation layer covering the 1 - 1 and 1 - 2 touch routing wires,
wherein the 1 - 1 touch routing wire is connected to the 1 - 1 touch electrode through a first contact hole, and the 1 - 2 touch routing wire is connected to the 1 - 2 touch electrode through a second contact hole,
wherein the 2 - 1 touch routing wire is connected to the 2 - 1 touch electrode through a third contact hole, and the 2 - 2 touch routing wire is connected to the 2 - 2 touch electrode through a fourth contact hole.

8. The touch sensor integrated type display device of claim 1 , wherein a common voltage is supplied to the plurality of touch electrodes in a display driving period,
wherein in a touch driving period before or after the display driving period, a touch driving voltage is supplied to the plurality of touch electrodes, and a voltage having a same frequency and a same magnitude as the touch driving voltage is supplied to the plurality of gate lines and the plurality of data lines.

9. A touch sensor integrated type display device, comprising:
a plurality of gate lines and a plurality of data lines which are arranged crossing each other;
a plurality of pixel electrodes respectively disposed in pixel areas defined by the crossing of the plurality of gate lines and the plurality of data lines;
a plurality of touch electrodes arranged in an oblique direction of a row direction and an oblique direction of a column direction, each touch electrode overlapping at least one respective pixel electrode, and including a first touch electrode and a second touch electrode completely surrounding the first touch electrode;
a plurality of touch link lines configured to connect a predetermined number of first touch electrodes and form a plurality of groups of the first touch electrodes;
a plurality of first touch routing wires which are respectively connected to the plurality of touch link lines and are arranged in the column direction;
a plurality of second touch routing wires which connect the second touch electrodes arranged in respective columns of only one of odd-numbered columns and even-numbered columns among the plurality of touch electrodes and are arranged in parallel with one another in the column direction; and
a third touch routing wire which connects the second touch electrodes on one row arranged in columns of only the other one of the odd-numbered columns and the even-numbered columns among the plurality of touch electrodes that are not in the columns of the second touch routing wires.

10. The touch sensor integrated type display device of claim 9 , wherein each of the plurality of touch link lines are electrically connected to define one of a triangle, a quadrangle, a polygon, and a star shape.

11. A touch sensor integrated type display device, comprising:
a plura

Assignees

• Lg Display Co Ltd

Inventors

• Lee Deuksu
• Hwang Jonghee
• Shin Seungrok
• Kim Taeyun

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G06F3/047

  using sets of wires, e.g. crossed wires · CPC title

• G06F3/045

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title