Curved display

Patent metadata

Field	Value
Publication number	US-9560761-B2
Application number	US-201414577946-A
Country	US
Kind code	B2
Filing date	Dec 19, 2014
Priority date	Dec 31, 2013
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

Embodiment related to a curved display including a curved panel, a printed circuit board separated from the curved panel, and a plurality of flexible films electrically connecting the curved panel and the printed circuit board. The lengths of the flexible films is increased as the flexible films approach an edge of the curved panel.

First claim

What is claimed is:

1. A display device, comprising:
a curved display panel formed with a pixel array, the curved display panel comprising a curved first surface and a curved second surface opposed to the curved first surface, the first curved surface defined by:
a first lateral edge,
a second lateral edge,
a first curved line connecting one end of the first lateral edge and one end of the second lateral edge, and
a second curved line connecting another end of the first lateral edge and another end of the second lateral edge;

a first printed circuit board separate from the curved display panel;
a first flexible film secured to a first region of the first curved surface and the first printed circuit board to electrically connect the curved display panel to the first printed circuit board, the first region closer to the first lateral edge than the second lateral edge, the first flexible film having a first set length and extending around the first curved line; and
a second flexible film secured to a second region of the first curved surface and the first printed circuit board, the second region closer to the first lateral edge than the first region, the second flexible film having a second set length longer than the first set length and extending around the first curved line.

2. The display device of claim 1 , wherein an integrated circuit is mounted on each of the first and second flexible films.

3. The display device of claim 1 , wherein the first curved line is a first arc and the second curved line is a second arc, the first and the second arcs having a same radius of curvature.

4. The display device of claim 3 , wherein a ratio of the first set length relative to a distance from a center of the first arc to the first region is same as a ratio of the second set length relative to a distance from the center of the first arc to the second region.

5. The display device of claim 1 , wherein the ratio of the first set length relative to the distance from the center of the first arc to the first region corresponds to tan(φ) where φ represents the radius of curvature.

6. The display device of claim 1 , further comprising:
a second printed circuit board separate from the curved display panel and the first printed circuit board;
a third flexible film secured to a third region of the first curved surface and the second printed circuit board to electrically connect the curved display panel to the second printed circuit board, the third region closer to the second lateral edge than the first lateral edge, the third flexible film having a third set length and extending around the first curved line; and
a fourth flexible film secured to a fourth region of the first curved surface and the second printed circuit board, the fourth region closer to the second lateral edge than the third region, the fourth flexible film having a fourth set length longer than the third set length and extending around the first curved line.

7. The display device of claim 1 , wherein each of the first and second flexible films is rectangular in shape with one or more slits to increase flexibility.

8. The display device of claim 1 , wherein each of the first and second flexible films is mounted with an integrated circuit and lateral sides of each of the first and second flexible films is indented towards the integrated circuits.

Assignees

• Lg Display Co Ltd

Inventors

• Kishida Katsuhiko
• Kim Hongsik
• Shin Seunghwan
• Ahn Chimyung
• Seo Daeyoung

Classifications

• H05K2201/10136

  Liquid Crystal display [LCD] · CPC title

• H05K1/189

  characterised by the use of flexible or folded printed circuits · CPC title

• H05K2201/09063

  Holes or slots in insulating substrate not used for electrical connections · CPC title

• H05K1/028

  Bending or folding regions of flexible printed circuits (H05K1/0283 takes precedence) · CPC title

• H05K1/147 Primary

  at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit (H05K1/148 takes precedence) · CPC title