TOUCH PANEL, METHOD OF MANUFACTURING THE SAME, AND DISPLAY DEVICE HAVING THE SAME

• US 20170185185A1
• Filed: 08/04/2016
• Published: 06/29/2017
• Est. Priority Date: 12/29/2015
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Yoo, Youngseok, Lee, Jeongheon, Kim, Sunghwan, Park, Heewoong, Lee, Kangwon, Kim, Youngsik, Lee, Innam
• Application Number:
  US15/229,021
• Publication Number:
  US 20170185185A1
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• 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 panel includes a substrate, touch electrodes on the substrate and arranged along one direction, and an upper buffer member on the substrate and including a first buffer part overlapping the touch electrodes along the one direction, and a second buffer part between the touch electrodes.

Claims

1. A touch panel comprising:

a substrate;

touch electrodes on the substrate and arranged along one direction; and

an upper buffer member on the substrate and comprising;

a first buffer part on the touch electrodes; and

a second buffer part between the touch electrodes overlapping the touch electrodes along the one direction

2. The touch panel of claim 1, wherein the second buffer part comprises a plurality of second buffer parts each extending from the first buffer part.

3. The touch panel of claim 1, wherein the first buffer part and the second buffer part are spaced apart from each other.

4. The touch panel of claim 1, wherein the upper buffer member comprises a polymer for absorbing an external impact.

5. The touch panel of claim 4, wherein the upper buffer member comprises a dry film resist.

6. The touch panel of claim 1, further comprising a polarizing plate having a lower surface attached to an upper surface of the upper buffer member by an adhesive member.

7. The touch panel of claim 1, further comprising a lower buffer member under the substrate.

8. The touch panel of claim 1, further comprising:

an insulation member; and

a connection bridge contacting the first buffer part,

wherein the touch electrodes comprise;

first electrodes for sensing a touch signal; and

second electrodes connected to each other by the connection bridge, and insulated from the first electrodes by the insulation member, the second electrodes for receiving the touch signal, and for applying the touch signal to a driving circuit.

9. A display device comprising:

a display panel for displaying an image;

a touch panel on the display panel and comprising;

a substrate;

touch electrodes arranged along one direction on the substrate; and

an upper buffer member on the substrate and comprising;

a first buffer part on the touch electrodes; and

a second buffer part between the touch electrodes overlapping the touch electrodes along the one direction; and

a window member on the touch panel.

10. The display device of claim 9, wherein the second buffer part comprises a plurality of second buffer parts each extending from the first buffer part.

11. The display device of claim 9, wherein the first buffer part and the second buffer part are spaced apart from each other.

12. The display device of claim 9, wherein the upper buffer member comprises a polymer for absorbing an external impact.

13. The display device of claim 12, wherein the upper buffer member comprises a dry film resist.

14. The display device of claim 9, wherein the touch panel further comprises a polarizing plate having a lower surface attached to an upper surface of the upper buffer member by an adhesive member.

15. The display device of claim 9, wherein the touch panel further comprises a lower buffer member between the substrate and the display panel.

16. A method of manufacturing a touch panel, the method comprising:

preparing a substrate;

forming touch electrodes arranged along one direction on the substrate; and

forming an upper buffer member comprising;

a first buffer part on the touch electrodes; and

a second buffer part between the touch electrodes overlapping the touch electrodes in the one direction

17. The method of claim 16, wherein the forming of the upper buffer member comprises:

depositing a buffer material on the touch electrodes; and

curing the buffer material.

18. The method of claim 17, wherein the depositing of the buffer material comprises depositing the buffer material between the touch electrodes.