Touch panel with electrode bridging structure

• US 9,310,910 B2
• Filed: 03/13/2014
• Issued: 04/12/2016
• Est. Priority Date: 03/20/2013
• Status: Active Grant

• Current Assignee: Miracle Touch Technology Incorporated
• Original Assignee: Miracle Touch Technology Incorporated
• Inventors: Li, Yu-Jie
• Primary Examiner(s): Hicks, Charles
• Application Number:
  US14/207,997
• Publication Number:
  US 20140285731A1
• Time in Patent Office: 761 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

The invention relates to a touch panel with an electrode bridging structure. The touch panel includes an electroconductive substrate and an electroconductive film disposed on the electroconductive substrate. Surfaces of the electroconductive substrate have upper and lower electrodes. The invention is characterized in that at least two electroconductive bridging portions are disposed between the electroconductive substrate and the electroconductive film, and can electrically connect the electroconductive substrate to the electroconductive film. Thus, the upper and lower electrodes of the touch panel can perform the induction conduction through the electroconductive bridging portions, thereby effectively increasing the conduction rate, decreasing the power load of the touch panel and saving the energy.

Claims

1. A touch panel comprising an electroconductive substrate coated with a transparent electroconductive layer, an electroconductive film coated with a transparent electroconductive layer, an electrode loop provided on a circumference of the electroconductive substrate, four electroconductive wires connected to four corners of the electrode loop, an insulating layer provided between the electroconductive substrate and the electroconductive film corresponding to the electrode loop, a plurality of insulators enclosed by the insulating layer, an adhesive layer for adhering the electroconductive film to the electroconductive substrate, and a connection comprising four electroconductive connection terminals connected to the electroconductive wires and a signal connection terminal to be connected to the electroconductive film for induction conduction, and the characteristic lies in that:

the touch panel further comprises at least two signal wires each comprising a first end connected to the signal connection terminal of the connection terminal portion and a second end formed with at least one electroconductive bridging portion which is rectangular and has a length in parallel with an X-axis or a Y-axis corresponding to an arranged position of the electroconductive bridging portion and a width perpendicular to the length, wherein the length is in a range of 12 to 25 mm, wherein the width is in a range of 0.8 to 2 mm; and

the insulating layer and the adhesive layer are formed with elongated through holes corresponding to the electroconductive bridging portions, respectively, so that the electroconductive bridging portions are in contact with the transparent electroconductive layer of the electroconductive film through the elongated through holes.

2. The touch panel according to claim 1, wherein the electroconductive bridging portions are located opposite to each other.

3. The touch panel according to claim 1, wherein the touch panel comprises four electroconductive bridging portions disposed on the corners, respectively.

4. The touch panel according to claim 1, wherein the two electroconductive bridging portions are disposed on an X-axis side and a Y-axis side corresponding to diagonal corners, respectively.

5. The touch panel according to claim 1, wherein the two electroconductive bridging portions are disposed on middle portions of two opposite parallel axis sides other than the connection terminal portion.