INTEGRATED TOUCH SCREEN

• US 20120313877A1
• Filed: 06/11/2012
• Published: 12/13/2012
• Est. Priority Date: 06/13/2011
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: HAN, JAE HEUNG
• Granted Patent: US 9,323,361 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/133302 Rigid substrates, e.g. inorganic substrates
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

Disclosed is a structure of a touch screen which is integrally implemented with a liquid crystal panel. In the structure, a touch sensor module is integrally implemented with the liquid crystal panel, a substrate of the liquid crystal panel is formed of two side strengthened glass, and the touch sensor module is integrally implemented on the two strengthened glass, thereby being capable of improving strength of the whole touch sensor module and simplifying a process.

Claims

1. An integrated touch window, comprising:

a touch sensor module formed integrally with a liquid crystal panel including a first substrate and a second substrate on the first substrate,

wherein the touch sensor module includes;

a sensing electrode pattern layer including a patterned sensing electrode formed on the first substrate of two side strengthened glass; and

a transparent window formed on the sensing electrode pattern layer.

2. The integrated touch window of claim 1, wherein the sensing electrode pattern layer has a structure in which a first sensing electrode pattern and a second sensing electrode pattern are formed on one surface and other surface of the base substrate, respectively, and is bonded to the transparent window and the first substrate via an adhesive material.

3. The integrated touch window of claim 1, wherein the sensing electrode pattern layer includes:

a first sensing electrode pattern layer bonded to the transparent window via a first adhesive material layer, and having a sensing electrode on one surface; and

a second sensing electrode pattern layer bonded to other surface of the first sensing electrode pattern layer via a second adhesive material layer, and having the sensing electrode on one surface.

4. The integrated touch window of claim 1, wherein the sensing electrode pattern layer is formed directly on the transparent window and includes the first and second sensing electrode patterns which are patterned to be insulated from each other.

5. The integrated touch window of claim 1, wherein the sensing electrode pattern layer includes:

a base substrate bonded onto one surface of the transparent window via an adhesive material layer; and

the first and second sensing electrode patterns which are formed directly on one surface of the substrate and are patterned to be insulated from each other.

6. The integrated touch window of claim 1, wherein the transparent window uses one among glass, acrylic resins, PET (polyethylene terephthalate), PC (polycarbonate), PES (polyether sulfone), PI (polyimide), and PMMA (PolyMethly MethaAcrylate).

7. The integrated touch window of claim 1, wherein the sensing electrode is formed of one selected from ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), CNT (carbon nano tube), Ag Nano wires, conductive polymers, or Graphene.

8. The integrated touch window of claim 7, wherein the sensing electrode of the first and second sensing electrode pattern layers and a wiring part are formed of the same material as each other.

9. The integrated touch window of claim 1, wherein the sensing electrode pattern layer is configured such that each unit sensing electrode is formed in a mesh structure, the mesh structure including an external line pattern for forming an outer angle part of a unit pattern and an internal line pattern for connecting the inside of the external line pattern in a cross structure.

10. The integrated touch window of claim 9, wherein the sensing electrode pattern layer includes the first sensing electrode pattern or the second sensing electrode pattern which are disposed to be insulated from each other, and the first sensing electrode pattern and the second sensing electrode pattern are disposed to partially overlap with each other.

11. The integrated touch window of claim 10, wherein one of the first sensing electrode pattern and the second sensing electrode pattern has a curvature pattern with periodicity.

12. The integrated touch window of claim 11, wherein the curvature pattern with periodicity is configured such that the sensing electrode pattern in a linear type is disposed between an n curvature part and a (n+1) curvature part.

13. The integrated touch window of claim 12, wherein the curvature pattern is the first sensing electrode pattern.

14. The integrated touch window of claim 12, wherein an angle θ

in which the first sensing electrode pattern and the second sensing electrode pattern overlap with each other is formed as an acute angle or an obtuse angle.

15. The integrated touch window of claim 12, wherein the curvature pattern is a sine pattern or a cosine pattern, and the second sensing electrode pattern passes through an inflection point of the n curvature part and the (n+1) curvature part, (n represents a natural number of more than 1)