CAPACITANCE TOUCH PANEL

• US 20110128252A1
• Filed: 12/01/2010
• Published: 06/02/2011
• Est. Priority Date: 12/01/2009
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: NAH, HYUNMIN
• Granted Patent: US 9,280,221 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

Disclosed is a capacitance touch panel, including a substrate, a transparent electrode formed at a partial area of a substrate, and an optical layer formed on the substrate formed with the transparent electrode in an overspreading (blanketing) way, whereby the optical layers are formed on a transparent electrode, each having a different refractive index to reduce a reflexibility of the transparent electrode and a reflexibility of a substrate, thereby improving a transparent electrode-visible phenomenon.

Claims

1. A capacitance touch panel, the panel comprising:

a substrate;

a transparent electrode formed at a partial area of a substrate; and

an optical layer formed on the substrate formed with the transparent electrode in an overspreading (blanketing) way, wherein the optical layer is formed with a refractive index different from that of the transparent electrode.

2. The panel of claim 1, further comprising an undercoating layer between the substrate and the transparent electrode, the layer having a refractive index higher than that of the substrate but smaller than that of the transparent electrode.

3. The panel of claim 1, wherein the optical layer is formed of one or more selected from a group consisting of aluminum oxide, SiO₂, zinc oxide, and a mixture thereof.

4. A capacitance touch panel, the panel comprising:

a substrate;

a transparent electrode formed at a partial area of a substrate; and

an optical layer formed between the substrate and the transparent electrode, the layer having a refractive index different from that of the substrate.

5. The panel of claim 4, wherein the optical layer is formed of one or more selected from a group consisting of aluminum oxide, SiO₂, zinc oxide, and a mixture thereof.