US 9,285,939 B2Granted

Touch panel

AssigneeWintek Corporation

InventorsTing-Yu Chang, Chong-Wei Li, Ching-Fu Hsu, Chen-Ho Hsu

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Abstract

A touch panel including a substrate, a touch-sensing element, transmission lines, a ground electrode, a first electrode layer, an insulation layer and a second electrode layer is provided. The transmission lines are electrically connected to the touch-sensing element. The ground electrode surrounds the touch-sensing element and the transmission lines. The first electrode layer is located around and electrically connected to the ground electrode. The insulation layer is at least disposed on the first electrode layer. The second electrode layer is disposed on the insulation layer to form at least one capacitance storage unit, so that the electro static discharge can be conducted to the ground electrode through the capacitance storage unit.

Claims15

Dependent claims

A touch panel, comprising:

a substrate;
a touch-sensing element disposed on the substrate;
a plurality of transmission lines disposed on the substrate and electrically connected to the touch-sensing element;
a ground electrode disposed on the substrate and surrounding the touch-sensing element and the transmission lines;
a first electrode layer disposed on the substrate and located around the ground electrode, the first electrode layer electrically connected to the ground electrode;
an insulation layer at least disposed on the first electrode layer;
and
a second electrode layer disposed on the insulation layer, wherein the second electrode layer, the insulation layer and the first electrode layer form at least one capacitance storage unit, so that an electro static discharge is conducted to the ground electrode through the capacitance storage unit.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/494,608Filed 24 Sep 2014
Priority: TW 102134306 A24 Sep 2013
Published: US 2015/0083569 A126 Mar 2015
Granted: 15 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G06F 3/0446
By capacitive means: using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
G06F 3/0445
By capacitive means: using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
G06F 2203/04107
Indexing scheme relating to G06F3/041 - G06F3/045: shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive…
G06F
Computing and data processing