Touch feedback panel, and touch screen device and electronic device inluding the same

• US 20110043477A1
• Filed: 12/15/2009
• Published: 02/24/2011
• Est. Priority Date: 08/21/2009
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: OH, Yong Soo, Park, Ho Joon, Lee, Jong Young
• Application Number:
  US12/654,243
• Publication Number:
  US 20110043477A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/016 Input arrangements with force or tactile feedback as computer generated output to the user
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch feedback panel includes a transparent electrode detecting a signal and a plurality of piezoelectric actuators disposed over the transparent electrode and partitioned into cells to generate a vibration only in a region where a signal is sensed.

Claims

1. A touch feedback panel comprising:

a transparent electrode detecting a signal; and

a plurality of piezoelectric actuators disposed over the transparent electrode and partitioned into cells to generate a vibration only in a region where a signal is sensed.

2. The touch feedback panel of claim 1, wherein the actuators are formed on an upper or lower surface of the transparent electrode.

3. The touch feedback panel of claim 1, further comprising a protective cover formed at the outermost layer.

4. The touch feedback panel of claim 1, wherein the piezoelectric actuators are transparent piezoelectric bodies.

5. A touch screen device comprising:

a touch feedback panel comprising;

a transparent electrode detecting a signal; and

a plurality of piezoelectric actuators responding to a touch, disposed over the transparent electrode and partitioned into cells to generate a vibration only in a region where a signal is sensed; and

a touch sensing unit attached to the touch feedback panel to sense the position of an input signal.

6. The touch screen device of claim 5, wherein the touch sensing unit is implemented as a resistive overlay type or a capacitive overlay type.

7. The touch screen device of claim 5, wherein the transparent electrode is formed of a conductive polymer or a conductive inorganic material.

8. The touch screen device of claim 7, wherein the conductive polymer is polythiophene (PEDOT), polyaniline, or a polymer thereof.

9. The touch screen device of claim 7, wherein the conductive inorganic material is tin oxide (ITO), antimony-doped tin oxide (ATO), aluminum-doped zinc oxide (AZO), or zinc oxide (ZnO).

10. The touch screen device of claim 5, wherein the touch feedback panel and the touch sensing unit are attached to each other with an optical clear adhesive.

11. The touch screen device of claim 5, wherein the actuators are formed of a zinc oxide material.

12. The touch screen device of claim 5, further comprising:

a control unit causing the transparent piezoelectric actuators to vibrate in a specific pattern, depending on the input signal sensed by the touch sensing unit.

13. An electronic device comprising:

a housing forming an exterior;

a touch feedback panel provided in the housing and comprising a transparent electrode detecting a signal, and a plurality of piezoelectric actuators disposed over the transparent electrode and partitioned into cells to generate a vibration only in a region where a signal is sensed; and

a touch sensing unit attached to the touch feedback panel to sense the position of an input signal.