Touch panel

摘要

A touch panel is provided. The touch panel includes a substrate, a plurality of first sensing pads, a plurality of second sensing pads and an extension sensing pad. The substrate has a body portion and an extension portion. The first sensing pads are arranged abreast on the body portion of the substrate along a first direction. The second sensing pads are arranged abreast on the extension portion of the substrate along a second direction. The material of the first sensing pads is different from the material of the second sensing pads. The extension sensing pad is arranged on the extension portion of the substrate. Thus, the touch panel can be extended to side portions of an electronic device, so as to replace functions of physical buttons by using the touch panel on the side portions.

主权项

1. A touch panel, comprising:
a substrate, having a body portion and a curved extension portion, and the substrate is a glass substrate; a plurality of first sensing pads, arranged abreast on the body portion of the substrate along a first direction; an extension sensing pad, arranged on the curved extension portion of the substrate, the extension sensing pad and the first sensing pads being made of metal, and the extension sensing pad and the first sensing pads being formed by a same first sensing pattern layer, wherein the body portion of the substrate is located on a plane, the curved extension portion is not located on the plane and an extension plane of the plane, an edge of the curved extension portion as well as a body of the curved extension portion doesn't overlap the body portion in a direction perpendicular to the plane, and wherein the extension sensing pad is a single-layer sensing pad structure, a whole of the extension sensing pad is fully located within an area of the curved extension portion, the extension sensing pad includes a first electrode axis and a plurality of first electrode blocks spaced apart from each other, and each of the first electrode blocks is electrically connected with one of the first sensing pads respectively; and a plurality of second sensing pads, formed by a second sensing pattern layer and arranged abreast on the body portion of the substrate along a second direction, wherein the first direction is intersected with the second direction, and the first sensing pattern layer and the second sensing pattern layer are made of different materials, and wherein the second sensing pattern layer is made of indium tin oxide (ITO), the second sensing pattern layer is less flexible than the first sensing pads and the extension sensing pad, a whole of the second sensing pattern layer is fully located within an area of the body portion so that the first sensing pads and the second sensing pads provide touch sensing in the body portion and the extension pad provides touch sensing in the curved extension portion, and a whole of the first sensing pads and the second sensing pads collectively constitute a double-layer sensing pad structure and are fully located within the area of the body portion.