Touch panel and display device

• US 8,947,389 B1
• Filed: 12/24/2013
• Issued: 02/03/2015
• Est. Priority Date: 10/15/2013
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Shin, SeungRok, Lee, DeukSu
• Primary Examiner(s): Shah, Priyank
• Application Number:
  US14/140,216
• Time in Patent Office: 406 Days
• Field of Search: 345/173, 345/174, 178/18.01, 178/18.06
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

The present invention generally relates to a touch panel including first electrodes, second electrodes, first signal wires connected to the first electrodes, and second signal wires connected to the second electrodes, two or more flexible printed circuit boards (FPCBs) being attached to one side of the touch panel to be spaced apart from each other by a distance which allows installation of an application component can be installed, and a display device including the same.

Claims

1. A display device comprising:

a touch panel comprising first electrodes, second electrodes, first signal wires connected to the first electrodes, and second signal wires connected to the second electrodes, wherein some of the first signal wires connected to the first electrodes are formed toward one side of the touch panel and other of the first signal wires are formed toward another side of the touch panel, or all of the first signal wires connected to the first electrodes are formed toward the one side of the touch panel, and the second signal wires connected to the second electrodes are formed toward the another side of the touch panel;

two or more flexible printed circuit boards (FPCBs) attached to the one side of the touch panel and spaced apart from each other by a distance which allows installation of an application component, wherein each of the two or more FPCBs attached to the one side of the touch panel comprises first signal lines connected to all or some of the first signal wires through pads formed on the touch panel;

one or more FPCBs attached to the another side of the touch panel, wherein the one or more FPCBs attached to the another side of the touch panel comprises second signal lines connected to the second signal wires through pads formed on the touch panel;

additional pads for connecting the first signal lines formed on the two or more FPCBs attached to the one side of the touch panel; and

connection lines connected between the additional pads,

wherein when three or more FPCBs are attached to the one side of the touch panel, and numbers of the additional pads formed on each of the three or more FPCBs attached to the one side of the touch panel, respectively, are different from each other, the connection lines connected between the additional pads formed on the three or more FPCBs attached to the one side of the touch panel are formed in a same pattern.

2. The display device as claimed in claim 1, wherein the touch panel has a single layer electrode structure in which the first electrodes and the second electrodes are formed in one layer.

3. The display device as claimed in claim 1, wherein the one or more FPCBs attached to the another side of the touch panel further comprises third signal lines connected to some of the first signal wires through the pads formed on the touch panel.

4. The display device as claimed in claim 1, wherein the connection lines are formed of a same material as that of the first and second electrodes.

5. The display device as claimed in claim 1, wherein a touch integrated circuit is located at one of the two or more FPCBs attached to the one side of the touch panel and the one or more FPCBs attached to the another side of the touch panel.

6. The display device as claimed in claim 5, wherein additional signal wires for connecting signal lines formed on each of the FPCBs where the touch integrated circuit is not located among the two or more FPCBs attached to the one side of the touch panel and the one or more FPCBs attached to the another side of the touch panel, to the touch integrated circuit, are formed at an outside of the touch panel.

7. The display device as claimed in claim 6, wherein the additional signal wires are formed of a same material as that of the first and second electrodes.

8. A touch panel comprising:

first electrodes and second electrodes formed as a touch sensor;

first signal wires connected to the first electrodes and second signal wires connected to the second electrodes, wherein some of the first signal wires connected to the first electrodes are formed toward one side of the touch panel and other of the first signal wires are formed toward another side of the touch panel, or all of the first signal wires connected to the first electrodes are formed toward the one side of the touch panel, and the second signal wires connected to the second electrodes are formed toward the another side of the touch panel;

attachment portions on the one side of the touch panel to which two or more FPCBs are attached to be spaced apart from each other so as to enable installation of an application component of the display device comprising the touch panel, wherein each of the two or more FPCBs comprises first signal lines connected to all or some of the first signal wires through pads formed on the touch panel;

one or more attachment portions on the another side of the touch panel to which one or more FPCBs are attached, wherein the one or more FPCBs attached to the another side of the touch panel comprises second signal lines connected to the second signal wires through pads formed on the touch panel;

additional pads for connecting the first signal lines formed on the two or more FPCBs attached to the one side of the touch panel;

and connection lines connected between the additional pads,

wherein when three or more FPCBs are attached to the one side of the touch panel, and numbers of the additional pads formed on each of the three or more FPCBs attached to the one side of the touch panel, respectively, are different from each other, the connection lines connected between the additional pads formed on the three or more FPCBs attached to the one side of the touch panel are formed in a same pattern.

9. The touch panel of claim 8, wherein the touch panel has a single layer electrode structure in which the first electrodes and the second electrodes are formed in one layer.

10. The touch panel of claim 8, wherein the one or more FPCBs attached to the another side of the touch panel further comprises third signal lines connected to some of the first signal wires through the pads formed on the touch panel.

11. The touch panel of claim 8, wherein the connection lines are formed of a same material as that of the first and second electrodes.

12. The touch panel of claim 8, wherein a touch integrated circuit is located at one of the two or more FPCBs attached to the one side of the touch panel and the one or more FPCBs attached to the another side of the touch panel.

13. The touch panel of claim 12, wherein additional signal wires for connecting signal lines formed on each of the FPCBs where the touch integrated circuit is not located among the two or more FPCBs attached to the one side of the touch panel and the one or more FPCBs attached to the another side of the touch panel, to the touch integrated circuit, are formed at an outside of the touch panel.

14. The touch panel of claim 13, wherein the additional signal wires are formed of a same material as that of the first and second electrodes.