Display device

Patent metadata

Field	Value
Publication number	US-11445622-B2
Application number	US-202117180786-A
Country	US
Kind code	B2
Filing date	Feb 20, 2021
Priority date	Jun 28, 2018
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A display device includes a display panel including a display area on which a plurality of display elements is disposed and a non-display area on which one or more wires for driving the plurality of display elements are disposed. A back cover is attached to one surface of the display panel and has a plurality of openings. A roller unit winds or unwinds the back cover and the display panel, and a lifting unit moves the back cover and the display panel in a vertical direction. The plurality of openings overlaps the display panel, and each of the plurality of openings is disposed to be staggered with one or more of the openings in an adjacent row. A size of the back cover is larger than a size of the display panel.

First claim

What is claimed is:

1. A display device, comprising:
a display panel;
a back cover attached to one surface of the display panel and having a plurality of openings; and
a roller configured to wind or unwinds the back cover and the display panel in a first direction,
wherein the back cover includes:
a first support area which is an uppermost area of the back cover;
a second support area which is a lowermost area of the back cover;
a third support area between the first support area and the second support area; and
a malleable area between the first support area and the third support area, and between the third support area and the second support area, the plurality of openings being disposed in the malleable area, and

wherein the display panel overlaps a part of the malleable area between the first support area and the third support area.

2. The display device according to claim 1 , further comprising:
a lifting unit configured to move the back cover and the display panel in the first direction,
wherein the lifting unit is fastened with the first support area of the back cover.

3. The display device according to claim 2 , wherein the back cover further includes:
a first fastening hole disposed in the first support area to fasten the first support area and the lifting unit with each other; and
a second fastening hole disposed in second support area to fasten the second support area and the roller with each other.

4. The display device according to claim 1 , further comprising:
a flexible film electrically connected to the display panel; and
a printed circuit board electrically connected to the flexible film,
wherein the flexible film and the printed circuit board overlap the third support area.

5. The display device according to claim 4 , wherein a width of the third support area in the first direction is larger than a width of the printed circuit board in the first direction.

6. The display device according to claim 1 , wherein a size of the malleable area between the first support area and the third support area is larger than a size of the malleable area between the third support area and the second support area.

7. The display device according to claim 1 , wherein an outer circumferential surface of the roller includes a flat portion,
wherein, with the back cover and the display panel fully wound around the roller, the third support area overlaps the flat portion of the roller.

8. The display device according to claim 1 , wherein a width of at least one of the plurality of openings in the first direction is smaller than a width of the at least one of the plurality of openings in a second direction, and each of the plurality of openings is disposed to be staggered with one or more of the openings in an adjacent row.

9. The display device according to claim 1 , further comprising:
a housing accommodating the back cover and the display panel,
wherein, with the back cover fully unwound from the roller, the third support area is disposed inside the housing unit.

10. The display device according to claim 9 , wherein, with the back cover fully unwound from the roller, the first support area and the malleable area between the first support area and the third support area are disposed outside the housing unit.

11. The display device according to claim 1 , wherein a size of the back cover is larger than a size of the display panel.

12. The display device according to claim 11 , wherein the display panel includes:
a display area on which a plurality of display elements is disposed; and
a non-display area on which one or more wires for driving the plurality of display elements are disposed, and
wherein each of a plurality of edges of the back cover corresponds to a respective one of a plurality of edges of the display panel and protrudes outside of the respective one of the plurality of edges of the display panel.

Assignees

• Lg Display Co Ltd

Inventors

• Shin Mi-Na
• Kang Chounsung
• Song Sunbok
• Park Geunchang
• Lee Moonsun

Classifications

• H05K5/03

  Covers · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• G06F1/1652

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G02F1/133305 Primary

  Flexible substrates, e.g. plastics, organic film · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title