Curved display device

Patent metadata

Field	Value
Publication number	US-9978825-B2
Application number	US-201615358020-A
Country	US
Kind code	B2
Filing date	Nov 21, 2016
Priority date	Dec 5, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A curved display device including a display area and a non-display area is provided. The curved display device includes a first direction area configured to maintain a flat state and a bending area connected to the first direction area. A thin film transistor (TFT) layer, a passivation layer, a sealing layer, and an upper film are provided on a base substrate in an area where the display area overlaps the bending area, and the sealing layer and the upper film extend to an area where the non-display area overlaps the bending area.

First claim

What is claimed is:

1. A curved display device including a display area and a non-display area in a substrate, the curved display device comprising:
a first direction area having a first flat front surface;
a second direction area having a second flat front surface,
a bending area connecting the first flat surface with the second flat surface,
wherein the first and second flat front surfaces remain flat when the bending area is bent, and the first and second flat front surfaces are not parallel when the bending area is bent,
wherein a thin film transistor (TFT) layer, a passivation layer, a sealing layer, and an upper film are included on a base substrate in a portion of the display area in each of the bending area and the first direction area,
wherein extended portions of the sealing layer and the upper film extend toward an end of the substrate in both the bending area and the first direction area,
wherein the sealing layer and the upper film extend to an area where the non-display area overlaps the bending area,
wherein the extended portions of the sealing layer and the upper film in the bending area are closer to the end of the substrate than the extended portions of the sealing layer and the upper film in the first direction area, and
wherein a crack transfer preventing part is provided in a portion of the non-display area in the bending area.

2. The curved display device of claim 1 , wherein the sealing layer and the upper film extend to an end of the non-display area.

3. The curved display device of claim 1 , wherein a thickness of a portion of the display area in the bending area is equal to a thickness of a portion of the non-display area in the bending area.

4. The curved display device of claim 1 , wherein the sealing layer and the upper film do not extend to an end of the non-display area.

5. The curved display device of claim 1 , wherein a second TFT layer and a second passivation layer are provided in a portion of the non-display area in the bending area, and
wherein the TFT layer and the passivation layer, which are provided in the display area in the bending area, are separated from the second TFT layer and the second passivation layer in the non-display area in the bending area with the crack transfer preventing part therebetween.

6. The curved display device of claim 1 , wherein one selected from the base substrate, the TFT layer, and the passivation layer is exposed to the crack transfer preventing part.

7. The curved display device of claim 1 , wherein a metal layer is included in the crack transfer preventing part.

8. The curved display device of claim 1 , wherein the sealing layer and the upper film extend to a portion of the non-display area in the second direction area.

9. The curved display device of claim 1 , wherein the first direction area comprises a first pixel configured to include a line and a TFT for displaying an image, and
wherein the bending area does not include a pixel for displaying an image, or comprises a second pixel including a configuration which differs from a configuration of the first pixel.

10. The curved display device of claim 1 , wherein the first direction area includes a plurality of pixels arranged in a matrix, and wherein a width of the bending area is greater than a width of a pixel of the first direction area.

11. The curved display device of claim 1 , wherein the first direction area includes a plurality of first pixels arranged in a matrix, and
wherein the bending area includes no pixels or a plurality of second pixels having a pixel configuration different than the first pixels.

12. The curved display device of claim 1 , wherein the first direction area includes a plurality of first pixels arranged in a matrix, and
wherein the bending area includes a plurality of second pixels having a pixel configuration different than the first pixels.

13. The curved display device of claim 1 , wherein the crack transfer preventing part includes at least one portion where the base substrate is exposed.

14. The curved display device of claim 1 , wherein the crack transfer preventing part includes at least one portion where one of the base substrate, the TFT layer, and the passivation layer is exposed.

15. The curved display device of claim 1 , wherein the crack transfer preventing part includes a metal layer directly in contact with the base substrate.

16. The curved display device of claim 1 , wherein the crack transfer preventing part includes a metal layer directly in contact with the TFT layer.

Assignees

• Lg Display Co Ltd

Inventors

• Lim Yusok
• Cho Sejun

Classifications

• H01L51/0097

  Electricity · mapped topic

• H01L27/3262 Primary

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• H01L51/5237

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic