Display device

• US 9,601,714 B2
• Filed: 08/04/2014
• Issued: 03/21/2017
• Est. Priority Date: 03/17/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Hong, Sang-Min
• Primary Examiner(s): PATEL, PREMAL R
• Application Number:
  US14/451,269
• Publication Number:
  US 20150263309A1
• Time in Patent Office: 960 Days
• US Class Current: 1/1
• CPC Class Codes: H10K 50/8426 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/8722 Peripheral sealing arrangements, e.g. adhesives, sealants
• CPC Class Codes: H10K 59/873 Encapsulations

Abstract

A display device is disclosed. In one aspect, the display device comprises a display panel, a window cover, at least one align key and a sealing portion. The display panel includes a substrate, a display unit formed over the substrate, and an encapsulation portion formed over the display unit. The window cover is formed over the display panel. The at least one align key is formed on the encapsulation portion and configured to align the display panel with the window cover. The sealing portion is formed between the substrate and the encapsulation portion, wherein the align key has at least one laser beam through portion passing through the encapsulation portion and is connected to the sealing portion.

Claims

1. A display device comprising:

a display panel including;

a substrate;

a display unit formed over the substrate; and

an encapsulation portion formed over the display unit;

a touch screen panel formed over the encapsulation portion;

a window cover formed over the touch screen panel;

at least one align key configured to align the display panel with the window cover; and

a sealing portion formed between the substrate and the encapsulation portion, wherein the align key has at least one laser beam through portion configured to permit passage of a laser beam through the encapsulation portion to the sealing portion, wherein the align key has a bottom surface contacting the encapsulation portion, wherein the sealing portion has a top surface contacting the encapsulation portion, and wherein the bottom surface of the align key has a width that is less than that of the top surface of the sealing portion.

2. The display device of claim 1, wherein the align key is formed on the encapsulation portion to align with the sealing portion formed on the display panel.

3. The display device of claim 2, wherein the sealing portion and the align key at least partially overlap each other.

4. The display device of claim 2, wherein the align key further comprises a plurality of align key portions separated from each other, and wherein the at least one laser beam through portion corresponds to a space between the align key portions.

5. The display device of claim 4, wherein each of the align key portions has a dot shape, and wherein the align key portions have a dot pattern.

6. The display device of claim 4, wherein the width of at least one of the align key portions is greater than a distance between two adjacent align key portions.

7. The display device of claim 2, wherein the sealing portion is continuously formed along edges of the display panel.

8. The display device of claim 2, wherein the align key is formed in a corner of the display panel.

9. The display device of claim 1, wherein the touch screen panel comprises a plurality of electrode pattern units formed on the encapsulation portion and at least one insulating layer separating the electrode pattern units from each other, wherein the align key is formed on a surface of the encapsulation portion, and wherein a plurality of touch screen panel lines electrically connected to the electrode pattern units are formed on the encapsulation portion.

10. The display device of claim 9, wherein the electrode pattern units comprise first and second electrode pattern units, wherein the first electrode pattern units are spaced apart from each other and arranged in a first direction, and wherein the second electrode pattern units are spaced apart from each other and arranged in a second direction crossing the first direction.

11. The display device of claim 9, wherein the substrate comprises an i) active area on which the display unit is formed, ii) a circuit area extending from the active area, and iii) a cell seal area extending from the circuit area and including the sealing portion, wherein the touch screen panel lines are formed on the encapsulation portion corresponding to the circuit area, and wherein the align key is formed on the encapsulation portion corresponding to the cell seal area.

12. The display device of claim 1, wherein the align key is formed of a conductive material.

13. The display device of claim 1, wherein the touch screen panel is one of the following:

a resistive type touch screen, an electro-magnetic type touch screen, a saw type touch screen, and an infrared type touch screen.

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

a thin film transistor (TFT); and

an organic light-emitting diode i) electrically connected to the TFT and ii) including first and second electrodes and an emission layer formed between the first and second electrodes.

15. The display device of claim 1, wherein the sealing portion comprises a glass frit.

16. The display device of claim 1, wherein the align key has a “

T”

shape.

17. The display device of claim 1, wherein the align key completely overlaps the sealing portion in the depth dimension of the display device, and wherein the sealing portion directly contacts the encapsulation portion.

18. The display device of claim 1, further comprising a plurality of touch screen panel lines electrically connected to the touch screen panel, wherein the substrate comprises an i) active area on which the display unit is formed, ii) a circuit area extending from the active area, and iii) a cell seal area extending from the circuit area and including the sealing portion, wherein the touch screen panel lines are formed on the encapsulation portion corresponding to the circuit area, and wherein the align key is formed on the encapsulation portion corresponding to the cell seal area.