Display device having a non-display area with a sensing portion and a non-sensing portion

• US 10,747,380 B2
• Filed: 08/23/2018
• Issued: 08/18/2020
• Est. Priority Date: 09/22/2017
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Choon Hyop, Yun, Ga Yeon
• Primary Examiner(s): Yodichkas, Aneeta
• Application Number:
  US16/110,770
• Publication Number:
  US 20190095005A1
• Time in Patent Office: 726 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 2203/04105 Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
• 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 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

A display device includes a display panel having a display portion. A window is disposed above the display portion. The window includes a display area, on which a screen is displayed by the display portion, and a non-display area, disposed around the display area. The non-display area of the window includes a sensing portion and a non-sensing portion. The non-display area of the window includes a first light shielding member. The sensing portion includes a first conductive layer and a second conductive layer stacked on the first conductive layer with the first light shielding member interposed therebetween.

Claims

1. A display device, comprising:

a display panel comprising a display portion; and

a window disposed above the display portion, the window comprising a display area, on which a screen is displayed by the display portion, and a non-display area, disposed around the display area,

wherein the non-display area of the window includes a sensing portion and a non-sensing portion,

wherein the non-display area of the window comprises a first light shielding member, and

wherein the sensing portion comprises a first conductive layer and a second conductive layer stacked on the first conductive layer with the first light shielding member interposed therebetween.

2. The display device of claim 1, wherein a portion of the first light shielding member which is disposed in the sensing portion comprises a hole.

3. The display device of claim 2, wherein the first conductive layer and/or the second conductive layer comprises an opening overlapping the hole.

4. The display device of claim 2, further comprising a light source which overlaps the sensing portion and provides light to the sensing portion.

5. The display device of claim 1, further comprising a third conductive layer and a fourth conductive layer which are each disposed in the non-sensing portion with the first light shielding member interposed between the third conductive layer and the fourth conductive layer.

6. The display device of claim 5, wherein each of the first conductive layer and the second conductive layer are spaced apart from each of the third conductive layer and the fourth conductive layer.

7. The display device of claim 6, wherein the window has two short sides extending along a first direction and two long sides extending along a second direction intersecting the first direction, and

wherein the non-display area has a long side adjacent area disposed adjacent to either or both of the two long sides of the window and the non-display area further has a short side adjacent area disposed adjacent to either or both of the two short sides of the window, and

wherein the third conductive layer and the fourth conductive layer are each disposed in the long side adjacent area, and the first conductive layer and the second conductive layer are each disposed in the short side adjacent area.

8. A display device, comprising:

a display panel comprising a display portion; and

a window disposed above the display portion, the window comprising a display area, on which a screen is displayed by the display portion, and a non-display area, disposed around the display area,

wherein the non-display area of the window includes a sensing portion and a non-sensing portion,

wherein the non-display area of the window comprises a first light shielding member,

wherein the sensing portion comprises a first conductive layer and a second conductive layer stacked on the first conductive layer with the first light shielding member interposed therebetween, and

wherein the display device further comprises a second light shielding member disposed between the first light shielding member and the second conductive layer.

9. The display device of claim 8, wherein a portion of the second light shielding member which is disposed in the sensing portion includes a different material from that of the first light shielding member.

10. A display device, comprising:

a display panel comprising a display portion; and

a window disposed above the display portion, the window comprising a display area, on which a screen is displayed by the display portion, and a non-display area, disposed around the display area,

wherein the non-display area of the window includes a sensing portion and a non-sensing portion,

wherein the non-display area of the window comprises a first light is shielding member,

wherein the sensing portion comprises a first conductive layer and a second conductive layer stacked on the first conductive layer with the first light shielding member interposed therebetween,

wherein the first conductive layer comprises a first surface facing the first light shielding member and a second surface opposite to the first surface, and

wherein the window further comprises a substrate disposed on the second surface of the first conductive layer.

11. The display device of claim 10, wherein the window comprises a first insulating layer disposed between the first surface of the first conductive layer and the substrate.

12. The display device of claim 11, wherein a portion of the first light shielding member which is disposed in the sensing portion comprises a hole, and the first insulating layer comprises a first opening overlapping the hole.

13. The display device of claim 12, wherein the first insulating layer comprises a light shielding material.

14. The display device of claim 12, wherein the second conductive layer comprises a first surface facing the first light shielding member and a second surface opposite to the first surface, and wherein the window comprises a second insulating layer disposed on the second surface of the second conductive layer.

15. The display device of claim 14, wherein the second insulating layer comprises a second opening overlapping the hole.