Light transmission touch panel

• US 8,493,337 B2
• Filed: 12/15/2008
• Issued: 07/23/2013
• Est. Priority Date: 09/22/2008
• Status: Expired due to Fees

• Current Assignee: RitFast Corporation
• Original Assignee: RitFast Corporation
• Inventors: Lee, Chih Yen, Liang, Hsuan Han
• Primary Examiner(s): Nguyen, Dung
• Assistant Examiner(s): DUONG, TAI V
• Application Number:
  US12/335,195
• Publication Number:
  US 20100073310A1
• Time in Patent Office: 1,681 Days
• Field of Search: 349/12, 349/139, 349/143, 178/18.03, 178/18.06, 178/18.01, 345/173, 345/174
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A light transmission touch panel comprises a transparent substrate, a transparent conductive layer, an insulating layer, a plurality of first metal lines, and a plurality of second metal lines. The transparent conductive layer is overlaid on a surface of the transparent substrate and comprises a plurality of first cells, a plurality of second cells and a plurality of connecting lines, wherein the plurality of first cells and the plurality of second cells are arranged in a staggered manner and the plurality of connecting lines respectively connect the adjacent second cells. The insulating layer further comprises a plurality of insulating areas, each of which is overlaid on one of the first cells. The plurality of second metal lines are respectively disposed on the connecting lines. The plurality of first metal lines are respectively disposed on the plurality of insulating areas, and respectively connect the adjacent first cells.

Claims

1. A light transmission touch panel, comprising:

a transparent substrate;

a plurality of bridging lines overlaid on a surface of the transparent substrate;

an insulating layer comprising a plurality of insulating areas respectively overlaid on the plurality of bridging lines;

a transparent conductive layer overlaid on the surface of the transparent substrate and comprising a plurality of first cells, a plurality of second cells and a plurality of connecting lines, wherein the plurality of first cells and the plurality of second cells are arranged in a staggered manner, the plurality of connecting lines respectively connect adjacent pairs of the second cells, and the plurality of bridging lines respectively connect two of the plurality of first cells that are adjacent to each other; and

a plurality of second metal lines respectively and directly disposed on the plurality of connecting lines.

2. The light transmission touch panel of claim 1, wherein each of the bridging lines follows the shortest path between the two adjacent first cells.

3. The light transmission touch panel of claim 1, wherein the material of the bridging lines is conductive oxide or metal.

4. The light transmission touch panel of claim 1, wherein the material of the transparent conductive layer is conductive oxide.

5. The light transmission touch panel of claim 1, wherein the material of the transparent substrate is glass or transparent polymer.