Touch sensitive display device

• US 10,359,880 B2
• Filed: 04/04/2017
• Issued: 07/23/2019
• Est. Priority Date: 07/04/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Park, Jin-Hee, Kim, Kwan-Ho, Son, Ho-Seok, Cho, Sung-Yeon, Cho, Jae-Hyung
• Primary Examiner(s): Amadiz, Rodney
• Application Number:
  US15/479,058
• Publication Number:
  US 20180004344A1
• Time in Patent Office: 840 Days
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads

Abstract

A display device may include a first touch sensing member on a top surface of a display panel, a second touch sensing member on a bottom surface of the display panel, a main FPCB coupled to the display panel and including first and second connecting portions, a first touch FPCB connected to the first touch sensing member and the first connecting portion, a second touch FPCB connected to the second touch sensing member and the second connecting portion, a first touch driving circuit on the first touch FPCB, and a second touch driving circuit on the second touch FPCB. The first touch driving circuit and the first connecting portion may be positioned opposite to each other with respect to the main FPCB. The second touch driving circuit and the second connecting portion may be positioned opposite to each other with respect to the main FPCB.

Claims

1. A display device, comprising:

a display panel;

a first touch sensing member disposed on a top surface of the display panel;

a second touch sensing member disposed on a bottom surface of the display panel;

a main flexible printed circuit board (FPCB) coupled to the display panel, the main FPCB comprising a first connecting portion and a second connecting portion;

a first touch FPCB, a first end of the first touch FPCB being connected to the first touch sensing member, a second end of the first touch FPCB being connected to the first connecting portion;

a second touch FPCB, a first end of the second touch FPCB being connected to the second touch sensing member, a second end of the second touch FPCB being connected to the second connecting portion;

a first touch driving circuit disposed on the first touch FPCB, the first touch driving circuit being configured to drive the first touch sensing member; and

a second touch driving circuit disposed on the second touch FPCB, the second touch driving circuit being configured to drive the second touch sensing member;

wherein the first touch driving circuit and the first connecting portion are positioned opposite to each other with respect to the main FPCB, and

wherein the second touch driving circuit and the second connecting portion are positioned opposite to each other with respect to the main FPCB.

2. The display device of claim 1, wherein the first touch driving circuit overlaps the first connecting portion, and

wherein the second touch driving circuit overlaps the second connecting portion.

3. The display device of claim 1, wherein the main FPCB comprises a first surface and a second surface opposite to the first surface, and

wherein the first connecting portion is disposed on the first surface and the first touch driving circuit is disposed to overlap the second surface in plan view.

4. The display device of claim 3, wherein the second connecting portion is disposed on the first surface and the second touch driving circuit is disposed to overlap the second surface in plan view.

5. The display device of claim 4, wherein the first surface and the second surface are a bottom surface and a top surface of the main FPCB, respectively.

6. The display device of claim 3, wherein the second connecting portion is disposed on the second surface and the second touch driving circuit is disposed to overlap the first surface in plan view.

7. The display device of claim 6, wherein the first surface and the second surface are a bottom surface and a top surface of the main FPCB, respectively.

8. The display device of claim 1, wherein the display panel is a transparent display panel.

9. The display device of claim 1, wherein the display panel is configured to display images from both the top surface and the bottom surface.

10. The display device of claim 1, wherein the second end of the first touch FPCB and the second end of the second touch FPCB are respectively compression connected to the first connecting portion and the second connecting portion.

11. The display device of claim 1, wherein the second end of the first touch FPCB and the second end of the second touch FPCB are respectively connected to the first connecting portion and the second connecting portion by connectors.