DISPLAY DEVICE

• US 20140078705A1
• Filed: 05/16/2013
• Published: 03/20/2014
• Est. Priority Date: 09/17/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jo, Jae-Uk
• Granted Patent: US 9,370,116 B2
• Time in Patent Office: Days
• US Class Current: 361/767
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: H05K 7/02 Arrangements of circuit components or wiring on supporting structure
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A display device includes: a display substrate in which a display for displaying an image is formed; an encapsulation substrate, which is assembled on the display substrate and has a first surface facing the display substrate and a second surface opposite to the first surface; and a circuit substrate for transferring an electrical signal to the display, where a plurality of pads, which are electrically connected to the display and connected to the circuit substrate, are formed on the first surface of the encapsulation substrate, and at least one connector is formed on surfaces of the display and the encapsulation substrate which face each other, the connector configured to provide a connection path between the display and the circuit board by being adhesively pressed in a vertical direction.

Claims

1. A display device comprising:

a display substrate in which a display for displaying an image is formed;

an encapsulation substrate, which is assembled on the display substrate and has a first surface facing the display substrate and a second surface opposite to the first surface; and

a circuit substrate for transferring an electrical signal to the display,

wherein a plurality of pads, which are electrically connected to the display and connected to the circuit substrate, are formed on the first surface of the encapsulation substrate, and at least one connector is formed on surfaces of the display and the encapsulation substrate which face each other, the connector configured to provide a connection path between the display and the circuit board by being adhesively pressed in a vertical direction.

2. The display device of claim 1, wherein an area of at least one side of the encapsulation substrate extends outside the display substrate, and the plurality of pads are formed on the exposed area of the encapsulation substrate and connected to at least one wiring line extending from the at least one connector toward the first surface of the encapsulation substrate.

3. The display device of claim 2, wherein the encapsulation substrate is formed larger than the display substrate by at least the exposed area.

4. The display device of claim 2, wherein the connector comprises:

a plurality of patterns formed on facing surfaces of the display substrate and the encapsulation substrate; and

a conductor for electrically connecting the plurality of patterns to each other.

5. The display device of claim 4, wherein the plurality of patterns comprise:

a plurality of first patterns, which are formed on one edge of the display substrate and extend from the display; and

a plurality of second patterns, which are formed on the encapsulation substrate and are connected to the plurality of pads via wiring lines.

6. The display device of claim 5, wherein the plurality of first patterns and the plurality of second patterns have the same pattern.

7. The display device of claim 5, wherein the conductor comprises a conductive film interposed between the plurality of first patterns and the plurality of second patterns.

8. The display device of claim 7, wherein the conductive film comprises:

conductive particles for electrically connecting the plurality of first patterns and the plurality of second patterns; and

an insulating resin surrounding the conductive particles.

9. The display device of claim 5, wherein the conductor is a conductive paste, electrically connects the plurality of first patterns and the plurality of second patterns, and is coated over a side wall of the display substrate at which the plurality of first patterns and the plurality of second patterns contact each other and the exposed area of the encapsulation substrate.

10. The display device of claim 2, wherein the circuit substrate has flexibility to have a plurality of terminals electrically connected to the plurality of pads.

11. The display device of claim 10, wherein the circuit substrate is arranged to extend from the first surface of the encapsulation substrate to the rear surface of the display substrate.

12. The display device of claim 10, wherein a filling member for filling up a separation space is formed on the first surface of the encapsulation substrate facing the circuit substrate.

13. The display device of claim 2, wherein a display driver integrated circuit (IC) is mounted on the at least one wiring line in the exposed area of the encapsulation substrate, and the at least one connector comprises a connector for connecting the display driver IC and a connector for connecting the circuit substrate.

14. The display device of claim 13, wherein the connector for connecting the display driver IC comprises a first pattern formed on the display substrate and extending from the display and a second pattern formed on the encapsulation substrate and formed at a location corresponding to the first pattern in a vertical direction, the connector for connecting the circuit substrate comprises a third pattern formed on the display substrate and extending from the display and a fourth pattern formed on the encapsulation substrate and formed at a location corresponding to the third pattern in the vertical direction, and a conductor electrically connects between the first and second patterns and between the third and fourth patterns.

15. The display device of claim 14, wherein the at least one wiring line comprises a first wiring line and a second wiring line connected to the plurality of pads, the first wiring line extending from the second pattern is formed on the exposed area of the encapsulation substrate, the display driver IC is adhesively pressure-bonded on the first wiring line, the second wiring line extending from the fourth pattern is formed on the exposed area of the encapsulation substrate, and the circuit substrate is adhesively pressure-bonded on the second wiring line.

16. The display device of claim 13, wherein the first and second patterns are formed in one-to-one correspondence with each other, and the third and fourth patterns are formed in one-to-one correspondence with each other.

17. The display device of claim 1, wherein the encapsulation substrate comprises a window substrate for protecting the display device.