DISPLAY DEVICE ASSOCIATED WITH TOUCH PANEL, METHOD OF CORRECTING ERRORS OF THE SAME, AND DISPLAY SYSTEM

• US 20090040189A1
• Filed: 07/10/2008
• Published: 02/12/2009
• Est. Priority Date: 08/06/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Ki-chan
• Application Number:
  US12/170,814
• Publication Number:
  US 20090040189A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/04186 Touch location disambiguation

Abstract

A display device associated with a touch panel, a method of correcting errors of the same, and a display system in which the display device includes a pixel unit having pixels for displaying an image, a touch-sensing unit having touch-sensing elements for outputting a touch-sensing signal when the touch-sensing elements are touched and a correcting unit correcting the touch-sensing signal outputted from a first touch-sensing element that has been detected to have failed, a storing unit for storing the coordinate corresponding to the first touch-sensing element, a signal-processing unit for determining whether the first touch-sensing element has been touched by detecting whether a second touch-sensing element corresponding to the coordinate adjacent the coordinate of the first touch-sensing element has been touched.

Claims

1. A method of correcting errors of a display device associated with a touch panel including pixels for displaying an image and touch-sensing elements for outputting touch-sensing signals when the touch-sensing elements are touched, the method comprising:

detecting whether the touch-sensing elements have failed; and

determining whether a first touch-sensing element detected as failing is touched by detecting whether a second touch-sensing element adjacent to the first touch-sensing element has been touched.

2. The method of claim 1, wherein the detecting whether the touch-sensing elements have failed comprises determining that the touch-sensing element to output the touch-sensing signal is a short circuit when the touch-sensing element has not been touched.

3. The method of claim 1, wherein the detecting whether the touch-sensing elements have failed comprises touching a screen of the display device and determining that the touch-sensing element that does not output the touch-sensing signal is a disconnection when the touch-sensing element is touched.

4. The method of claim 3, wherein the touching of the screen of the display device comprises touching the screen in a row direction of the pixels and touching the screen in a column direction of the pixels.

5. The method of claim 1, wherein the determining whether the first touch-sensing element is touched comprises storing a coordinate of the first touch-sensing element.

6. The method of claim 1, wherein the determining whether the first touch-sensing element is touched comprises storing a coordinate of the first touch-sensing element in a storing unit, and detecting whether the second touch-sensing element corresponding to a coordinate adjacent the coordinate of the first touch-sensing element is touched.

7. The method of claim 6, wherein the detecting whether the touch-sensing elements have failed is performed at one of when the display device is turned on, when a command is input, and periodically.

8. The method of claim 6, wherein the storing unit is a nonvolatile memory.

9. The method of claim 8, wherein the nonvolatile memory is an EEPROM.

10. A display device associated with a touch panel, comprising:

a pixel unit having pixels for displaying an image;

a touch-sensing unit having touch-sensing elements for outputting respective touch-sensing signals when the touch-sensing elements are touched; and

a correcting unit correcting the touch-sensing signal outputted from a first touch-sensing element being detected to have failed, comprising a storage unit for storing a coordinate corresponding to the first touch-sensing element, a signal-processing unit for determining whether the first touch-sensing element is touched by detecting whether a second touch-sensing element corresponding to a coordinate adjacent the coordinate of the first touch-sensing element has been touched.

11. The display device of claim 10, wherein the touch-sensing elements are each a contact switch type.

12. The display device of claim 10, wherein the storing unit comprises a nonvolatile memory.

13. The display device of claim 12, wherein the nonvolatile memory comprises an EEPROM.

14. A display system comprising:

a pixel unit having pixels for displaying an image;

a touch-sensing unit having touch-sensing elements for outputting a respective touch-sensing signal when the touch-sensing elements are touched;

a driver IC receiving the touch-sensing signal from the touch-sensing unit; and

a interface module detecting whether the touch-sensing elements have failed, determining whether a first touch-sensing element being detected to have failed is touched by detecting whether a second touch-sensing element adjacent the first touch-sensing element is touched, and outputting a result to a central processing unit.

15. The display system of claim 14, wherein the interface module comprises a correcting unit correcting the touch-sensing signal outputted from the first touch-sensing element, and wherein the correcting unit comprises a storing unit for storing a coordinate corresponding to the first touch-sensing element.

16. The display system of claim 15, wherein the correcting unit further comprises a signal-processing unit for determining whether the first touch-sensing element is touched by detecting whether a second touch-sensing element corresponding to a coordinate adjacent the coordinate of the first touch-sensing element has been touched.

17. The display system of claim 15, wherein the storing unit comprises a nonvolatile memory.

18. The display system of claim 17, wherein the nonvolatile memory comprises an EEPROM.