Touch screen panel and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-9298291-B2
Application number	US-201213731460-A
Country	US
Kind code	B2
Filing date	Dec 31, 2012
Priority date	Apr 23, 2012
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A touch screen panel and a manufacturing method thereof are provided, which can reduce the surface reflectance (Fresnel reflectance) of a touch screen in indoor and outdoor environments, suppress degradation of the visibility of a display by a reduction in surface reflectance, and improve light transmittance. The touch screen panel includes: a first transparent substrate; a transparent conductive layer formed on the first transparent substrate, and having an electrode pattern of nanorods; a transparent adhesive layer formed on the transparent conductive layer; and a second transparent substrate formed on the transparent adhesive layer.

First claim

What is claimed is:

1. A touch screen panel comprising:
a first transparent substrate having a first surface and a second surface opposite to the first surface;
a transparent conductive layer formed on the first surface of the first transparent substrate, and having an electrode pattern of nanorods;
a transparent adhesive layer formed on the transparent conductive layer;
a second transparent substrate formed on the transparent adhesive layer;
a first antireflective layer formed on the second transparent substrate; and
a second antireflective layer formed on the second surface of the first transparent substrate,
wherein the transparent conductive layer has a refractive index between a refractive index of the first transparent substrate and a refractive index of the transparent adhesive layer.

2. The touch screen panel of claim 1 , wherein the refractive index of the transparent conductive layer is an average value of the refractive index of the first transparent substrate and the refractive index of the transparent adhesive layer.

3. The touch screen panel of claim 1 , further comprising an LCD (liquid crystal display) panel positioned on the touch screen panel.

4. The touch screen panel of claim 3 , wherein the LCD panel comprises:
a first polarizer;
liquid crystals formed on the first polarizer;
a second polarizer formed on the liquid crystals; and
a third antireflective layer formed on the second polarizer.

5. The touch screen panel of claim 1 , wherein the first antireflective layer has a refractive index between the refractive index of the first transparent substrate and the refractive index of an air layer.

6. The touch screen panel of claim 1 , wherein the second antireflective layer has a refractive index between the refractive index of the second transparent substrate and the refractive index of the air layer.

7. The touch screen panel of claim 4 , wherein the third antireflective layer has a refractive index between the refractive index of the second polarizer and the refractive index of the air layer.

8. A manufacturing method of a touch screen panel, the method comprising the steps of:
forming a transparent conductive layer having an electrode pattern of nanorods on a first surface of a first transparent substrate, the first transparent substrate having a second surface opposite to the first surface;
forming a transparent adhesive layer on the transparent conductive layer;
forming a second transparent substrate on the transparent adhesive layer;
forming a first antireflective layer on the second transparent substrate; and
forming a second antireflective layer on the second surface of the first transparent substrate,
wherein the transparent conductive layer has a refractive index between a refractive index of the first transparent substrate and a refractive index of the transparent adhesive layer.

9. The method of claim 8 , wherein the refractive index of the transparent conductive layer is an average value of the refractive index of the first transparent substrate and the refractive index of the transparent adhesive layer.

10. The method of claim 8 , further comprising the step of positioning an LCD (liquid crystal display) panel on the touch screen panel, with an air layer interposed therebetween,
wherein the step of positioning the LCD panel comprises the steps of:
forming a first polarizer;
forming liquid crystals on the first polarizer;
forming a second polarizer on the liquid crystals; and
forming a third antireflective layer on the second polarizer.

11. The method of claim 8 , wherein the first antireflective layer has a refractive index between the refractive index of the first transparent substrate and the refractive index of an air layer.

12. The method of claim 8 , wherein the second antireflective layer has a refractive index between the refractive index of the second transparent substrate and the refractive index of the air layer.

13. The method of claim 10 , wherein the third antireflective layer has a refractive index between the refractive index of the second polarizer and the refractive index of the air layer.

Assignees

• Lg Electronics Inc
• Postech Acad Ind Found

Inventors

• Jeon Seongman
• Kim Jongkyu
• Park Joodo
• Lee Seehyung
• Kim Yongdae

Classifications

• G02F1/13338

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

• Y10T29/49105

  Switch making · CPC title

• G06F2203/04103

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

• G06F3/041 Primary

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title