Electrode member and touch window including the same

• US 9,921,709 B2
• Filed: 07/11/2015
• Issued: 03/20/2018
• Est. Priority Date: 07/11/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Park, Dong Wook, Ahn, Myoung Soo, Park, Duck Hoon
• Primary Examiner(s): Dharia, Prabodh M
• Application Number:
  US14/797,118
• Publication Number:
  US 20160011703A1
• Time in Patent Office: 983 Days
• Field of Search: 345156-184, 257 40, 359275, 4302851
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04112 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 Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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 3/047 using sets of wires, e.g. crossed wires
• CPC Class Codes: H05K 1/097 Inks comprising nanoparticles and specially adapted for being sintered at low temperature H05K1/095 takes precedence
• CPC Class Codes: H05K 2201/0145 Polyester, e.g. polyethylene terephthalate [PET], polyethylene naphthalate [PEN]
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 2203/107 Using laser light shaping a substrate by laser ablation H05K3/0026

Abstract

The electrode member according to the embodiment includes: a substrate; and an electrode part on the substrate, wherein the electrode part includes a sensing electrode and a wire electrode, at least one electrode of the sensing electrode and the wire electrode includes an opening part and the electrode part has a black color.

Claims

1. An a touch window for detecting a touch comprising:

a substrate;

a resin layer on the substrate; and

an electrode layer on the resin layer,

wherein the resin layer comprises a plurality of engraved pattern parts,

wherein the electrode layer is provided in the plurality of engraved pattern parts,

wherein the plurality of engraved pattern parts have a mesh shape,

wherein the electrode layer has a mesh shape,

wherein the electrode layer comprises a first electrode layer and a second electrode layer,

wherein the first electrode layer is provided in the plurality of engraved pattern parts,

wherein the second electrode layer is provided on top of the first electrode layer,

wherein a bottom surface of the second electrode layer is in direct physical contact with the a top surface of the first electrode layer,

wherein the electrode layer includes a sensing electrode and a wire electrode,

wherein the electrode layer includes a carbonized metal,

wherein the first and second electrode layers have a psychrometric lightness (L*) of 60 or less,

wherein a psychrometric lightness of the second electrode layer is lower than a psychrometric lightness of the first electrode layer,

wherein a height of the engraved pattern parts is higher than a height of the electrode layer.

2. The a touch window for detecting a touch of claim 1, wherein the electrode layer including the sensing electrode and the wire electrode includes at least one of Cr, Ni, Cu, Al, Ag, Mo, Au, Ti and an alloy thereof.

3. The a touch window for detecting a touch of claim 1, wherein the engraved pattern part has a height of 1 μ

m to 6 μ

m, and the electrode layer is arranged to have a height of 70% to 90% based on the height of the engraved pattern part.

4. The a touch window for detecting a touch of claim 1, wherein the electrode material further includes a third electrode layer, the first electrode layer is disposed in the engraved pattern part, the second electrode material is disposed on the first electrode layer, the third electrode layer is disposed on the second electrode layer, and the psychrometric lightness (L*) of the first electrode layer and the third electrode layer are lower than the psychrometric lightness (L*) of the second electrode layer.

5. The a touch window for detecting a touch of claim 1, wherein a first electrode layer is arranged higher than a second electrode layer.

6. A touch window for detecting a touch comprising:

a first substrate; and

a second substrate on the first substrate,

wherein the touch window according to claim 1 is disposed on at least one of the first substrate and the second substrate.

7. A touch device comprising:

a touch window according to claim 6; and

a driving part on the touch window.

8. The a touch window for detecting a touch of claim 1, the ratio of the height of the first electrode layer and the height d4 the second electrode layer is 6:

4 to 8;

2.

9. The a touch window for detecting a touch of claim 1, wherein the first electrode layer includes silver,

wherein the second electrode layer includes carbonized silver.

10. The a touch window for detecting a touch of claim 1, wherein the substrate includes a flexible, curved or bent substrate.

11. The a touch window for detecting a touch of claim 1, wherein the substrate includes an active area and an inactive area,

wherein the a sensing electrode is provided in the active area,

wherein the wire electrode is provided in the inactive area.

12. The a touch window for detecting a touch of claim 1, wherein a width of the engraved pattern part is 10 μ

m or less.

13. The a touch window for detecting a touch of claim 1, wherein the sensing electrode includes a first sensing electrode and a second sensing electrode,

wherein the first sensing electrode and the second sensing electrode are provided on a same surface of the substrate.