Curved display device including trenches in substrate

• US 9,269,727 B2
• Filed: 01/06/2015
• Issued: 02/23/2016
• Est. Priority Date: 02/18/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Im, Wan-Soon, Woo, SuWan
• Primary Examiner(s): Schoenholtz, Joseph
• Application Number:
  US14/590,103
• Publication Number:
  US 20150236045A1
• Time in Patent Office: 413 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133302 Rigid substrates, e.g. inorganic substrates
• CPC Class Codes: G02F 1/133305 Flexible substrates, e.g. plastics, organic film
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: H01L 27/1218 with a particular composition or structure of the substrate
• CPC Class Codes: H01L 27/124 with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits wiring structures per se H01L23/52
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A curved display device includes a first substrate, a pixels and a second substrate. The first substrate is curved along a first direction and includes a pixel area through which light is transmitted and a non-pixel area which blocks light transmission therethrough. The pixel is disposed in the pixel area. The second substrate is curved along the first direction, and is opposite to and coupled to the first substrate. First trenches are defined in at least one substrate among the first and second substrates and extending in a second direction intersecting the first direction.

Claims

1. A curved display device comprising:

a first substrate curved along a first direction, and comprising a pixel area through which light is transmitted and a non-pixel area which blocks light transmission therethrough;

a pixel in the pixel area;

a first signal line provided in plural and connected to the pixel in the pixel area, a length of the first signal line extended in a second direction intersecting the first direction; and

a second substrate curved along the first direction, and opposite to and coupled to the first substrate,

wherein

a first trench is provided in plural in one substrate among the first and second substrates, a length of the first trench extended in the second direction, and

the first trench of which the length thereof extends in the second direction overlaps the first signal line of which the length thereof extends in the second direction.

2. The curved display device of claim 1, wherein the first trenches are in the non-pixel area.

3. The curved display device of claim 2, wherein the first trenches are defined in the first and second substrates, and comprise:

first sub-trenches defined in the first substrate; and

second sub-trenches defined in the second substrate.

4. The curved display device of claim 1, wherein

each of the first trenches has a first depth from a surface of the one substrate among the first and second substrates, and

the first depth is in a range of about 10% to about 50% of a thickness of the one substrate among the first and second substrates.

5. The curved display device of claim 1, wherein

each of the first and second substrates comprises an outer surface exposed outwardly, and an inner surface opposite to the outer surface, and

the first trenches are defined recessed from the outwardly exposed outer surface of the one substrate among the first and second substrates.

6. The curved display device of claim 1, wherein

each of the first and second substrates comprises an outer surface exposed outwardly, and an inner surface opposite to the outer surface, and

the first trenches are defined recessed from the inner surface of the one substrate among the first and second substrates.

7. The curved display device of claim 1, further comprising:

a second signal line provided in plural and connected to the pixel to which the first signal line is connected, a length of the second signal line extended in the first direction,

wherein

the first and second substrates are further curved along the second direction intersecting the first direction,

a second trench is provided in plural in the one of the first and second substrates among the first and second substrates coupled to each other, a length of the second trench extended in the first direction, and

the second trench of which the length thereof extends in the first direction overlaps the second signal line of which the length thereof extends in the first direction.

8. The curved display device of claim 7, wherein the second trenches are in the non-pixel area.

9. The curved display device of claim 8, wherein the second trenches are defined in the first and second substrates, and comprise:

third sub-trenches defined in the first substrate; and

fourth sub-trenches defined in the second substrate.

10. The curved display device of claim 7, wherein

each of the second trenches has a first depth from a surface of the one substrate among the first and second substrates, and

the first depth is in a range of about 10% to about 50% of a thickness of the one substrate among the first and second substrates.

11. The curved display device of claim 7, wherein

each of the first and second substrates comprises an outer surface exposed outwardly, and an inner surface opposite to the outer surface, and

the second trenches are defined recessed from at least one of the outer surface and the inner surface of the one substrate among the first and second substrates.

12. The curved display device of claim 7, further comprising:

a light blocking layer on the first substrate or the second substrate, the light blocking layer overlapping the first trenches and the second trenches.

13. The curved display device of claim 7, wherein the first direction is perpendicular to the second direction.

14. The curved display device of claim 7, wherein an extending direction of each of the first trenches is perpendicular to an extending direction of each of the second trenches.

15. The curved display device of claim 7, further comprising:

a thin film transistor electrically connected to the pixel;

the second signal line comprising a gate line which is electrically connected to the thin film transistor and through which a gate signal is transferred to the thin film transistor;

and

the first signal line comprising a data line which is electrically connected to the thin film transistor and through which a data signal is transferred to the thin film transistor,

wherein

each of the gate line and the data line is provided in plural,

the first trenches overlap the plurality of data lines, and

the second trenches overlap the plurality of gate lines.

16. The curved display device of claim 7, wherein

the first trenches are discontinuous in the first direction;

and

the second trenches are discontinuous in the second direction.

17. The curved display device of claim 1, wherein the first and second substrates comprise glass substrates.

18. The curved display device of claim 1, further comprising:

a light blocking layer on the first substrate or the second substrate, the light blocking layer overlapping the first trenches.

19. The curved display device of claim 1, further comprising:

a thin film transistor electrically connected to the pixel;

the second signal line comprising a gate line which is electrically connected to the thin film transistor and through which a gate signal is transferred to the thin film transistor;

and

the first signal line comprising a data line which is electrically connected to the thin film transistor and through which a data signal is transferred to the thin film transistor,

wherein

each of the gate line and the data line is provided in plural, and

the first trenches overlap the plurality of data lines or the plurality of gate lines.