ELECTRONIC DEVICE WITH TOUCH PANEL

• US 20110148778A1
• Filed: 03/02/2010
• Published: 06/23/2011
• Est. Priority Date: 12/18/2009
• Status: Abandoned Application

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: YANG, SONG-LING
• Application Number:
  US12/715,536
• Publication Number:
  US 20110148778A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04808 Several contacts: gestures triggering a specific function, e.g. scrolling, zooming, right-click, when the user establishes several contacts with the surface simultaneously; e.g. using several fingers or a combination of fingers and pen
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

An electronic device comprises a touch panel including a protective layer, a first conductive layer adhered to a lower surface of the protective layer. A first voltage is applied to the first conductive layer. An elastic layer is located under the first conductive layer, comprises a plurality of through holes. A second conductive layer is located under the elastic layer, comprises a plurality of conductive tabs. A second voltage is applied to the conductive tabs and is less than the first voltage which is applied to the first conductive layer. A processing unit is electrically connected to the touch panel.

Claims

1. An electronic device comprising:

a touch panel comprising;

a protective layer;

a first conductive layer adhered to a lower surface of the protective layer;

an elastic layer located under the first conductive layer, the elastic layer comprising a plurality of through holes;

a second conductive layer located under the elastic layer, the second conductive layer comprising a plurality of conductive tabs; and

a processing unit electrically connected to the touch panel;

wherein a first voltage is applied to the first conductive layer, and a second voltage, less than the first voltage, is applied to the conductive tabs;

when the protective layer is touched by an exterior force, the protective layer drives the first conductive layer to touch the one or more conductive tabs of the second conductive layer by the one or more through holes of the elastic layer to change the second voltage of the one or more conductive tabs;

the conductive tabs whose second voltage has changed, sends signals to the processing unit;

the processing unit identifies the signals from the conductive tabs to determine touch positions, and implements a corresponding operation according to the determined touch positions.

2. The electronic device as described in claim 1, wherein the first voltage applied to the first conductive layer is about 5 volts.

3. The electronic device as described in claim 1, wherein the elastic layer is made of plastic material.

4. The electronic device as described in claim 1, wherein one end of each of the conductive tabs is electrically connected to the processing unit and another end of each of the conductive tabs is connected to ground.

5. The electronic device as described in claim 1, further comprising a substrate, wherein the second conductive layer is adhered to an upper surface of the substrate, and the substrate is located on the upper surface of the electronic device.

6. The electronic device as described in claim 1, wherein the signal from the conductive tab is assigned an identifier;

the processing unit identifies the identifier of the signal to determine the touch position of the touch operation, and implements the corresponding operation according to the determined touch position.