IP Library › Granted Patent US 10,355,027
Granted Patent B2
US 10,355,027 · App. 15/815,107 · Granted Jul 16, 2019

Display device

Inventors: Seungkyu Lee (Cheonan-si, KR); Inwoo Kim (Asan-si, KR); Saehee Ryu (Asan-si, KR); Kwangsu Park (Yongin-si, KR); Seongjun Hwang (Cheonan-si, KR)
Assignee: Samsung Display Co., Ltd.
H01L27/1244G02F1/1343G02F1/13458G02F1/133512G02F1/133514G02F1/136286G09G3/06G02F2001/13396G02F2001/136254G02F2203/69
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Quick Facts
Patent No.
US 10,355,027
App. No.
15/815,107
Granted
Jul 16, 2019
Kind
B2
Abstract

A display device is capable of substantially preventing a short circuit between a common electrode and a test pad, the display device including: a first substrate and a second substrate; a thin film transistor disposed on the first substrate; a gate line and a data line connected to the thin film transistor; a test pad portion connected to the data line; a test line connecting the test pad portion and the data line; and a spacer disposed on the first substrate. The spacer includes: a first spacer disposed on the display area and supporting the first substrate and the second substrate; a second spacer disposed on the display area, the second spacer having a less height than a height of the first spacer; and a third spacer overlapping the test line and the test pad portion disposed on the non-display area, the third spacer not contacting the second substrate.

Claims (31)

1. A display device comprising:

a first substrate and a second substrate, each comprising a display area and a non-display area;

a thin film transistor disposed on the display area of the first substrate;

a gate line and a data line connected to the thin film transistor;

a test pad portion connected to the data line;

a test line connecting the test pad portion and the data line; and

a spacer disposed on the first substrate,

wherein the spacer comprises:

a first spacer disposed on the display area and supporting the first substrate and the second substrate;

a second spacer disposed on the display area, the second spacer having a less height than a height of the first spacer; and

a third spacer overlapping the test line and the test pad portion disposed on the non-display area, the third spacer not contacting the second substrate.

2. The display device as claimed in claim 1 , wherein at least one of the test lines is disposed between the test pad portions.

3. The display device as claimed in claim 2 , wherein the data line, the test line and the test pad portion are unitary.

4. The display device as claimed in claim 1 , wherein the first spacer, the second spacer and the third spacer comprise a substantially same material.

5. The display device as claimed in claim 1 , further comprising an insulating interlayer disposed on the first substrate.

6. The display device as claimed in claim 5 , wherein the spacer comprises a substantially same material as a material comprised in the insulating interlayer.

7. The display device as claimed in claim 6 , wherein the first spacer, the second spacer and the third spacer comprise an organic material.

8. The display device as claimed in claim 1 , further comprising a black matrix disposed on the first substrate.

9. The display device as claimed in claim 8 , wherein the spacer comprises a substantially same material as a material comprised in the black matrix.

10. The display device as claimed in claim 9 , wherein the spacer comprises one of a metal, an opaque organic layer forming material and a photosensitive composition.

11. The display device as claimed in claim 1 , further comprising a color filter at the display area of the first substrate.

12. The display device as claimed in claim 11 , wherein the spacer comprises a substantially same material as a material comprised in the color filter.

13. The display device as claimed in claim 11 , wherein the spacer comprises a photosensitive organic material.

14. The display device as claimed in claim 1 , wherein the second spacer and the third spacer have a same height.

15. The display device as claimed in claim 14 , wherein the spacer is disposed on a color filter on the first substrate.

16. The display device as claimed in claim 14 , further comprising a color filter disposed on the first substrate and a black matrix disposed on the second substrate,

wherein the spacer is formed of a same material as the color filter.

17. The display device as claimed in claim 14 , wherein the spacer is disposed on a color filter on the first substrate.

18. The display device as claimed in claim 14 , further comprising a color filter disposed on the first substrate and a black matrix disposed on the second substrate,

wherein the spacer is formed of a same material as the color filter.

19. The display device as claimed in claim 1 , wherein the second spacer has a height greater than that of the third spacer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2017
From: LEE, SEUNGKYU; KIM, INWOO; RYU, SAEHEE; PARK, KWANGSU; HWANG, SEONGJUN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 044482/0523 →
Priority Claims (1)
KR 10-2016-0152735 · Nov 16, 2016 · national
Continuity (1)
Related Publication 20180138214A1 · May 17, 2018