TOUCH PANEL DISPLAY SYSTEM AND DRIVING METHOD THEREOF

• US 20100207900A1
• Filed: 01/14/2010
• Published: 08/19/2010
• Est. Priority Date: 02/16/2009
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Kung, Chen-Pang, Chen, Yu-Jen, Lin, Chen-Wei
• Granted Patent: US 9,013,414 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally

Abstract

A touch panel display system and driving method thereof is provided. The touch panel display system includes a display device and a display circuit coupled to the display device for driving a display position of the display device. The system further includes a sensing device coupled to the display device for sensing an contact pressure, and a sensing circuit coupled to the sensing device for driving a sensing position of the sensing device. The system further includes a synchronous controller coupled to the display circuit and the sensing circuit for synchronously controlling the display circuit and the sensing circuit such that the display position and the sensing position are not overlapped and maintained beyond a predetermined distance.

Claims

1. A touch panel display system, comprising:

a display device;

a display circuit, coupled to the display device for driving a display position of the display device;

a sensing device, coupled to the display device for sensing a contact pressure;

a sensing circuit, coupled to the sensing device for driving a sensing position of the sensing device, and

a synchronous controller, coupled to the display circuit and the sensing circuit for synchronously controlling the display circuit and the sensing circuit such that the display position and the sensing position are not overlapped and maintained beyond a predetermined distance.

2. The touch panel display system as claimed in claim 1, wherein the synchronous controller instructs the display circuit or the sensing circuit to temporarily stop driving the display position or the sensing position until the display position and the sensing position are maintained beyond the predetermined distance when the display position and sensing position are in close proximity within the predetermined distance.

3. The touch panel display system as claimed in claim 1, wherein the synchronous controller instructs the display circuit or the sensing circuit to temporarily speed up driving the display position or the sensing position until the display position and the sensing position are maintained beyond the predetermined distance when the display position and sensing position are in close proximity within the predetermined distance.

4. The touch panel display system as claimed in claim 1, wherein the synchronous controller is activated when the outside touch is determined.

5. A driving method for a touch panel display, comprising:

driving a display position of a display device;

driving a sensing position of a sensing device; and

controlling the display device and the sensing device synchronously such that the display position and the sensing position are not overlapped and maintained beyond a predetermined distance.

6. The driving method for a touch panel display as claimed in claim 5, wherein the controlling the display device and the sensing synchronously comprises:

stopping driving temporarily until the display position and the sensing position are maintained beyond the predetermined distance when the display position and sensing position are in close proximity within the predetermined distance.

7. The driving method for a touch panel display as claimed in claim 5, wherein the controlling the display device and the sensing synchronously comprises:

speeding up driving temporarily until the display position and the sensing position are maintained beyond the predetermined distance when the display position and sensing position are in close proximity within the predetermined distance.

8. The driving method for a touch panel display as claimed in claim 5, further comprising:

determining whether there is an outside touch existing to determine whether to activate the synchronous controller.