TOUCH-SENSING MODULE

• US 20130213783A1
• Filed: 11/28/2012
• Published: 08/22/2013
• Est. Priority Date: 02/17/2012
• Status: Active Grant

• Current Assignee: E Ink Holdings Incorporated
• Original Assignee: E Ink Holdings Incorporated
• Inventors: Hsieh, Yun-Nan
• Granted Patent: US 8,853,569 B2
• Time in Patent Office: Days
• US Class Current: 200/5.R
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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
• CPC Class Codes: H03K 17/96 Touch switches specially adapted for electronic time-pieces with no moving parts G04G21/08
• CPC Class Codes: Y10T 29/49105 Switch making

Abstract

A touch-sensing module including a plurality of first sensing strings and a plurality of second sensing strings is provided. Each of the first sensing strings includes a first strip-shaped conductive line and a plurality of first sensing pads connected to a same side of the first strip-shaped conductive line. Each of the second sensing strings includes a second strip-shaped conductive line and a plurality of second sensing pads connected to a same side of the second strip-shaped conductive line. The first strip-shaped conductive lines of the first sensing strings cross the second strip-shaped conductive lines of the second sensing strings. A crossing position of each of the first strip-shaped conductive lines and each of the second strip-shaped conductive lines forms an electrical reference node.

Claims

1. A touch-sensing module, comprising:

a plurality of first sensing strings, each of the plurality of first sensing strings comprising;

a first strip-shaped conductive line; and

a plurality of first sensing pads, connected to a same side of the first strip-shaped conductive line;

a plurality of second sensing strings, each of the plurality of second sensing strings comprising;

a second strip-shaped conductive line; and

a plurality of second sensing pads, connected to a same side of the second strip-shaped conductive line;

wherein the first strip-shaped conductive lines of the plurality of first sensing strings cross the second strip-shaped conductive lines of the plurality of second sensing strings, a crossing position of each of the first strip-shaped conductive lines and each of the second strip-shaped conductive lines forms an electrical reference node, one first sensing pad is connected to a first conductive segment of the first strip-shaped conductive line at a same side of each of the electrical reference nodes, and one second sensing pad is connected to a second conductive segment of the second strip-shaped conductive line at a same side of each of the electrical reference nodes.

2. The touch-sensing module according to claim 1, wherein the first sensing pad and the second sensing pad between two adjacent first strip-shaped conductive lines and between two adjacent second strip-shaped conductive lines are approximately fully distributed in an area surrounded by the two adjacent first strip-shaped conductive lines and the two adjacent second strip-shaped conductive lines.

3. The touch-sensing module according to claim 2, wherein the first sensing pad and the second sensing pad between the two adjacent first strip-shaped conductive lines and between the two adjacent second strip-shaped conductive lines are disposed separately from each other.

4. The touch-sensing module according to claim 2, wherein each of the first sensing pads is in a rectangle, and each of the second sensing pads is in a rectangle.

5. The touch-sensing module according to claim 1, wherein each of the first strip-shaped conductive lines and each of the second strip-shaped conductive lines are separated from each other by an insulating material.

6. The touch-sensing module according to claim 5, wherein each of the first strip-shaped conductive lines has a first end and a second end opposite to each other, and each of the second strip-shaped conductive lines has a third end and a fourth end opposite to each other, and wherein the touch-sensing module further comprises:

a plurality of first traces, electrically connected to the first ends of the first strip-shaped conductive lines respectively;

a plurality of second traces, electrically connected to the third ends of the second strip-shaped conductive lines respectively; and

a front frame, covering the first traces, the second traces, the first sensing pads respectively connected to the second ends of the first strip-shaped conductive lines and the second sensing pads respectively connected to the fourth ends of the second strip-shaped conductive lines.

7. The touch-sensing module according to claim 1, wherein the first sensing pads and the second sensing pads are transparent sensing pads.