Touch-sensitive display device

Patent metadata

Field	Value
Publication number	US-9671886-B2
Application number	US-201414586813-A
Country	US
Kind code	B2
Filing date	Dec 30, 2014
Priority date	Mar 13, 2014
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

Disclosed herein is a touch-sensitive display device comprising: a first set of metal electrodes including a first metal electrode; a second set of metal electrodes including a second metal electrode and a third metal electrode, the first metal electrode located between the second metal electrode and the third metal electrode such that the second metal electrode is physically separated from the third metal electrode; a first set of touch electrodes including a first touch electrode that is connected to the first metal electrode; a second set of touch electrodes including a second touch electrode and a third touch electrode, the second touch electrode connected to the second metal electrode and the third touch electrode connected to the third metal electrode; an insulation film having a plurality of contact holes; and a connection electrode electrically connecting the second metal electrode to the third metal electrode through the plurality of contact holes.

First claim

What is claimed is:

1. A touch-sensitive display device, comprising:
a flexible substrate comprising a plurality of pixels defined by a black matrix;
a plurality of metal electrodes in a mesh pattern disposed on the black matrix, each of the plurality of metal electrodes including a plurality of electrode lines that intersect one another; and
a plurality of transparent touch electrodes disposed on the plurality of metal electrodes, each transparent touch electrode including a plurality of segments defined by an intersection of a plurality of the electrode lines,
wherein the intersection of the plurality of the electrode lines is at a center of a corresponding transparent touch electrode; and
wherein each segment has a size equal to an integer multiple greater than that of a size of the pixels to distribute stress exerted on the transparent touch electrodes over the plurality of segments.

2. The touch-sensitive display device according to claim 1 , further comprising:
an insulation film over the plurality of metal electrodes.

3. A touch-sensitive display device, comprising:
a first metal electrode in a mesh pattern formed on a black matrix, the first metal electrode including a plurality of electrode lines that intersect each other;
a plurality of first transparent touch sensitive segments disposed on and overlapping intersections of the first metal electrode having its center on the intersection;
a second metal electrode in a mesh pattern disposed on the black matrix and disconnected with the first metal electrode at a boundary between the first metal electrode and the second metal electrode, the second metal electrode including a plurality of electrode lines that intersect each other;
a plurality of second transparent touch sensitive segments disposed on and overlapping an intersection of the second metal electrode having its center on the intersection;
an insulation layer on the first metal electrode and the second metal electrode; and
a connection electrode disposed on the insulation layer;
wherein the connection electrode is configured to connect with the second metal electrode through a plurality of apertures of the insulation layer.

4. The touch-sensitive display device according to claim 3 , wherein the plurality of transparent touch sensitive segments and the plurality of second transparent touch sensitive segments have a size equal to an integer multiple greater than that of a size of a sub-pixel.

5. The touch-sensitive display device according to claim 4 , wherein a plurality sub-pixels is defined by the black matrix on a flexible substrate, and the first metal electrode and the second metal electrode correspond to the black matrix.

6. The touch-sensitive display device according to claim 3 , further comprising:
a first transparent touch electrode included in the plurality of first transparent touch sensitive segments; and
a second transparent touch electrode included in the plurality of second transparent touch sensitive segments.

Assignees

• Lg Display Co Ltd

Inventors

• Yoo Sejong
• Choi Nackbong
• Kim Yongchul
• Han Jonghyun
• Jeong Haeyeon

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · 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

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title