Display device including black conductive sealing member

Patent metadata

Field	Value
Publication number	US-9632365-B2
Application number	US-201615000112-A
Country	US
Kind code	B2
Filing date	Jan 19, 2016
Priority date	Jun 2, 2015
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

A display device includes: a first panel including a common voltage wire on a first substrate, and a light blocking layer which is on the common voltage wire and exposes a portion of the common voltage wire, a second panel facing the first panel and including a common electrode on a second substrate; and a sealant between the first and second panels and electrically connecting the common electrode of the second panel and the common voltage wire of the first panel to each other. The sealant includes a first sealing portion having a first color and a second sealing portion having a second color different from the first color of the first sealing portion. The second sealing portion overlaps the exposed portion of the common voltage wire of the first panel and electrically connects the common electrode of the second panel to the common voltage wire.

First claim

What is claimed is:

1. A display device comprising:
a first panel comprising:
a common voltage wire on a first substrate of the first panel; and
a light blocking layer which is on the common voltage wire and exposes a portion of the common voltage wire;

a second panel facing the first panel and comprising a common electrode on a second substrate of the second panel; and
a sealant between the first panel and the second panel and electrically connecting the common electrode of the second panel and the common voltage wire of the first panel to each other,
wherein the sealant comprises:
a first sealing portion having a first color, and
a second sealing portion having a second color different from the first color of the first sealing portion
wherein the second sealing portion overlaps the exposed portion of the common voltage wire of the first panel and electrically connects the common electrode of the second panel to the common voltage wire.

2. The display device of claim 1 , wherein the second color of the second sealing portion is black.

3. The display device of claim 2 , wherein an optical density of the second sealing portion is greater than or equal to about 2.0.

4. The display device of claim 2 , wherein the second sealing portion comprises a carbon black material.

5. The display device of claim 1 , wherein the second sealing portion is in a same layer as the first sealing portion.

6. The display device of claim 1 , wherein the second sealing portion comprises a conductive ball provided in plural and disposed therein, the conductive balls electrically connecting the common electrode of the second panel and the second common voltage wire of the first panel to each other.

7. The display device of claim 6 , wherein the conductive ball is defined by a body comprising an organic material and a conductive layer which is on an outer surface of the body comprising the organic material.

8. The display device of claim 1 , wherein the light blocking layer defines a contact hole therein which exposes the portion of the common voltage wire.

9. The display device of claim 8 , further comprising a step compensation layer in the contact hole defined by the light blocking layer,
wherein the common voltage wire on the first substrate extends to an upper surface of the step compensation layer in the contact hole defined by the light blocking layer.

10. The display device of claim 9 , wherein the step compensation layer comprises a blue color filter.

11. The display device of claim 1 , wherein the light blocking layer comprises a black-based material.

12. The display device of claim 1 , further comprising a display area in which an image is displayed and a peripheral area which surrounds the display area,
wherein the sealant is extended in the peripheral area along a circumference of the display area in a top plan view.

13. The display device of claim 1 , wherein the common voltage wire comprises:
a first common voltage wire on the first substrate; and
a second common voltage wire on the first common voltage wire and defining the exposed portion of the common voltage wire, the second common voltage wire contacting the second sealing portion.

14. The display device of claim 1 , further comprising a display area in which an image is displayed and a peripheral area which surrounds the display area,
wherein the first panel comprises disposed in the display area:
a thin film transistor provided in plural on the first substrate;
a color filter provided in plural on the thin film transistors;
a pixel electrode on the color filters; and
a light blocking member on the color filters,
wherein the light blocking member comprises a column spacer which protrudes from an upper surface thereof toward the second panel, and maintains a gap between the first panel and the second panel.

15. The display device of claim 14 , wherein the light blocking member and the light blocking layer comprise a same material.

16. The display device of claim 15 , wherein the light blocking member and the column spacer comprise a same material.

17. The display device of claim 16 , wherein a protruded portion of the light blocking member defines the column spacer.

18. The display device of claim 17 , wherein the light blocking member and the column spacer each comprise a black-based material.

19. The display device of claim 2 , further comprising a display area in which an image is displayed and a peripheral area which surrounds the display area,
wherein, in the peripheral area,
the first sealing portion is provided in plural, and
the second sealing portion which electrically connects the common electrode of the second panel to the common voltage wire of the first panel is disposed between and non-overlapping adjacent first sealing portions.

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Won-Gap
• Kim Byung-Chul
• Park Jae Hong
• Yu Sang Hee
• Jeon Young Joo
• Tak Kyung Seon

Classifications

• G02F1/13394

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title