DISPLAY DEVICE

• US 20160232826A1
• Filed: 01/20/2016
• Published: 08/11/2016
• Est. Priority Date: 02/06/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Cho, Seung-Yeon
• Granted Patent: US 11,138,914 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/0264 Details of driving circuits
• CPC Class Codes: G09G 2330/12 Test circuits or failure detection circuits included in a display system, as permanent part thereof
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A display device is disclosed. In one aspect, the display device includes a substrate, a plurality of pixels formed over the substrate and a plurality of signal lines formed over the substrate and connected to the pixels. The signal lines include a plurality of data lines formed over the substrate and a first crack sensing line connected to a first data line. The first crack sensing line is divided into first and second sections and the first section has a width that is greater than that of the second section.

Claims

1. A display device, comprising:

a substrate including a display area and a peripheral area neighboring the display area;

a plurality of pixels formed over the substrate in the display area; and

a plurality of signal lines formed over the substrate and connected to the pixels,

wherein the signal lines include;

a plurality of data lines formed over the substrate, and

a first crack sensing line formed in the peripheral area and connected to a first data line,

wherein the first crack sensing line is divided into first and second sections, and

wherein the first section has a width that is greater than that of the second section.

2. The display device of claim 1, wherein the first section has a polygonal shape.

3. The display device of claim 2, wherein the first section has a substantially quadrangular shape or a substantially rhombus shape.

4. The display device of claim 2, wherein the first and second sections of the first crack sensing line overlap each other with an insulating layer interposed therebetween, and wherein the first and second sections are connected to each other through a first hole defined in the insulating layer.

5. The display device of claim 2, wherein the first crack sensing line extends in a first direction, wherein the first crack sensing line includes:

i) a first oblique section that forms a first angle with the first direction and ii) a second oblique section forming a second angle with the first direction, wherein the first and second oblique sections are connected to each other via a crossing section, wherein the first and second oblique portions forms the first section, and wherein the crossing section forms the second section.

6. The display device of claim 5, further comprising a plurality of second holes formed in the insulating layer.

7. The display device of claim 1, wherein:

the signal lines include a first test signal line and a second test signal line formed over the substrate in the peripheral area,

the first crack sensing line is connected to the first data line through a first connection portion and a second connection portion,

the first crack sensing line forms a loop between the first and second connection portions, and

the data lines are connected to;

i) the first test signal line through a plurality of first switching elements and ii) the second test signal line through a plurality of second switching elements.

8. The display device of claim 7, wherein the first crack sensing line is connected between the second test signal line and one of the second switching elements.

9. The display device of claim 8, further comprising:

i) a first test gate line formed in the peripheral area of the substrate and connected to the first switching elements, and ii) a second test gate line connected to the second switching elements.

10. The display device of claim 9, wherein:

the data lines are configured to receive a first test signal from the first test signal line in response to the first test gate line being applied with a first gate-on voltage, and

the data lines are further configured to receive a second test signal from the second test signal line in response to the second test gate line being applied with a second gate-on voltage.

11. The display device of claim 10, wherein the second test gate line is further configured to receive the second gate-on voltage after the first test gate line the first gate-on voltage receives the first gate-on voltage, and wherein the magnitude of the first test voltage and the magnitude of the second test voltage are different from each other.

12. A display device, comprising:

a substrate including a display area and a peripheral area neighboring the display area;

a plurality of pixels formed over the substrate in the display area; and

a plurality of signal lines formed over the substrate and connected to the pixels,

wherein the signal lines include;

a plurality of data lines formed over the substrate, and

a first crack sensing line formed in the peripheral area and connected to a first data line,

wherein the first crack sensing line is divided into first and second sections, and

wherein the first section extends in a first direction and the second section extends in a second direction different from the first direction.

13. The display device of claim 12, wherein the data lines extend in a first direction, wherein the first and second sections are connected to each other in a crossing region, wherein the first section forms a first angle with the first direction, wherein the second section forms a second angle with the first direction, and wherein the first and second angles less than or greater than about 90 degrees.

14. The display device of claim 12, wherein the data lines extend in a first direction, wherein the first and second sections are connected to each other in a crossing region, wherein the first section extends in the first direction, and wherein the second section extends in a direction substantially perpendicular to the first direction.

15. The display device of claim 14, further comprising a plurality of holes formed in an insulating layer that overlaps the first crack sensing line.

16. The display device of claim 12, wherein:

the signal lines further include a first test signal line and a second test signal line formed over the substrate in the peripheral area,

the first crack sensing line is connected to the first data line through a first connection portion and a second connection portion,

the first crack sensing line forms a loop between the first and second connection portions, and

the data lines are connected to;

i) the first test signal line through a plurality of first switching elements and ii) the second test signal line through a plurality of second switching elements.

17. The display device of claim 16, wherein the first crack sensing line is connected between the second test signal line and the second switching elements.

18. The display device of claim 17, further comprising a first test gate line connected to the first switching elements and a second test gate line connected to the second switching elements, and wherein the first test gate line is formed in the peripheral area.

19. The display device of claim 18, wherein:

the data lines are configured to receive a first test signal from the first test signal line in response to the first test gate line being applied with a first gate-on voltage, and

the data lines are further configure to receive a first test signal from the second test signal line in response to the second test gate line being applied with a second gate-on voltage.

20. The display device of claim 19, wherein the second test gate line is further configured to receive the second gate-on voltage after the first test gate line the first gate-on voltage receives the first gate-on voltage, and wherein the magnitude of the first test voltage and the magnitude of the second test voltage are different from each other.