DISPLAY DEVICE

• US 20150205418A1
• Filed: 08/28/2014
• Published: 07/23/2015
• Est. Priority Date: 01/22/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Nam, Hui, Kim, Beom Shik, Oh, Joon Hak, Lee, Jong-Seo
• Granted Patent: US 9,553,134 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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
• 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: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

Provided is a display device, including: a first substrate including a display area and a non-display area adjacent to the display area; a display unit on the first substrate at the display area and configured to display an image; a display wiring on the first substrate at the non-display area and coupled to the display unit; a second substrate on the first substrate with the display unit and the display wiring therebetween; a touch unit on the second substrate, corresponding to the display unit, and configured to recognize a touch; a touch wiring on the second substrate at the non-display area and coupled to the touch unit; and an anti-noise electrode between the display wiring and the touch wiring at the non-display area.

Claims

1. A display device, comprising:

a first substrate comprising a display area and a non-display area adjacent to the display area;

a display unit on the first substrate at the display area and configured to display an image;

a display wiring on the first substrate to at the non-display area and coupled to the display unit;

a second substrate on the first substrate with the display unit and the display wiring therebetween;

a touch unit on the second substrate, corresponding to the display unit, and configured to recognize a touch;

a touch wiring on the second substrate at the non-display area and coupled to the touch unit; and

an anti-noise electrode between the display wiring and the touch wiring at the non-display area.

2. The display device of claim 1, wherein fixed power is applied to the anti-noise electrode.

3. The display device of claim 1, wherein the display unit comprises:

an organic light emitting diode comprising a first electrode on the first substrate;

an organic emission layer on the first electrode; and

a second electrode on the organic emission layer.

4. The display device of claim 3, wherein the anti-noise electrode is at a same layer as the second electrode and is formed of a same material as that of the second electrode.

5. The display device of claim 4, wherein the second electrode comprises a light transmissive electrode.

6. The display device of claim 4, wherein the anti-noise electrode is coupled to the second electrode.

7. The display device of claim 6, wherein the anti-noise electrode is extended from and is integral to the second electrode.

8. The display device of claim 6, further comprising a sealant between the first substrate and the second substrate to correspond to the non-display area and configured to cover the display unit,

wherein the anti-noise electrode comprises

a connection portion coupled to the second electrode by contacting the sealant and having a smaller width than that of the other portions of the anti-noise electrode.

9. The display device of claim 4, wherein the anti-noise electrode is spaced from the second electrode.

10. The display device of claim 3, wherein the anti-noise electrode is at a same layer as the first electrode and is formed of a same material as that of the first electrode.

11. The display device of claim 10, wherein the anti-noise electrode is spaced from the first electrode.

12. The display device of claim 3, wherein:

the display unit further comprises a thin film transistor coupled to the organic light emitting diode, the thin film transistor comprising;

an active layer on the first substrate;

a gate electrode on the active layer; and

source and drain electrodes on the gate electrode and coupled to the active layer.

13. The display device of claim 12, wherein:

the display wiring is at a same layer as the gate electrode and is formed of a same material as that of the gate electrode; and

the anti-noise electrode is at a same layer as the source and drain electrodes and is formed of a same material as that of the source and drain electrodes.

14. The display device of claim 1, wherein the touch unit is a capacitive type touch unit.

15. The display device of claim 1, further comprising a driver on the first substrate corresponding to the non-display area and coupled to the display wiring.