Flexible display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9285835-B2
Application number	US-201314135787-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Feb 28, 2013
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

Disclosed is a flexible display device. The flexible display device includes a display panel configured to include a first substrate that includes a plurality of pixels and a second substrate that is facing-coupled to the first substrate, and a first flexible circuit board connected to the first substrate. A driving IC which supplies a driving signal to the display panel is mounted on the first flexible circuit board. The first substrate includes a display part covered by the second substrate and configured to include the plurality of pixels, a non-display part provided near the display part and coupled to the second substrate, a bending part configured to extend from one side of the non-display part, and bent at a certain curvature, and a pad part connected to one side of the first flexible circuit board.

First claim

What is claimed is:

1. A flexible display device, comprising:
a display panel configured to include
a first substrate having a plurality of pixels; and
a second substrate that is facing and coupled to the first substrate; and

a first flexible circuit board connected to the first substrate,
wherein a driving IC configured to supply a driving signal to the display panel is on the first flexible circuit board,
wherein the first substrate comprises:
a display part covered by the second substrate, and including the plurality of pixels;
a non-display part coupled to the second substrate;
a bending part configured to:
extend from one side of the non-display part, and
bend under the first substrate at a curvature; and

a pad part disposed on one side of the bending part under the first substrate and connected to one side of the first flexible circuit board.

2. The flexible display device of claim 1 , further comprising:
a plurality of driving elements configured to supply a control signal and an image signal to the driving IC, the control signal and the image signal being input from outside the plurality of driving elements; and
a protection cap configured to protect the driving elements,
wherein the protection cap and the plurality of driving elements are provided at a bottom of the first flexible circuit board.

3. The flexible display device of claim 2 , wherein
the driving IC is provided at the bottom of the first flexible circuit board, and
the bending part is bent such that the driving IC and the driving elements are disposed under the first substrate.

4. The flexible display device of claim 2 , further comprising:
a control board and a control circuit on the control board, the control circuit being configured to supply the control signal and the image signal to the driving elements, the control circuit being provided at a top or a bottom of the control board,
wherein the control board is connected to an other side of the first flexible circuit board opposite to the pad part of the first substrate.

5. The flexible display device of claim 4 , wherein the driving IC and the driving elements are disposed over or under the control board.

6. The flexible display device of claim 5 , wherein:
a hole and a connector are further provided on the control board; and
the other side of the first flexible circuit board passes through the hole from the top to the bottom of the control board, and is connected to the connector.

7. The flexible display device of claim 2 , wherein the protection cap is disposed under the display panel.

8. The flexible display device of claim 2 , wherein the protection cap supports the display panel.

9. The flexible display device of claim 4 , wherein:
the first flexible circuit board is disposed at a bottom of the first substrate; and
the control board is disposed between the bottom of the first substrate and the first flexible circuit board.

10. The flexible display device of claim 9 , wherein:
the control board is connected to the other side of the first flexible circuit board: and
the driving IC, the driving elements, and the control circuit are disposed in parallel.

11. The flexible display device of claim 9 , wherein:
the control board is connected to the other side of the first flexible circuit board; and
the control circuit overlaps the driving IC and the driving elements.

12. The flexible display device of claim 4 , wherein:
the first flexible circuit board is disposed at a bottom of the first substrate; and
the control board is disposed at a bottom of the first flexible circuit board.

13. The flexible display device of claim 1 , further comprising:
a second flexible circuit board on which a plurality of driving elements and a protection cap are mounted, the second flexible circuit board being connected to an other side of the first flexible circuit board opposite to the pad part of the first substrate.

14. The flexible display device of claim 1 , further comprising a back plate provided at a bottom of the first substrate.

15. The flexible display device of claim 1 , further comprising a light blocking member provided at a bottom of the first substrate.

16. The flexible display device of claim 1 , wherein the first flexible circuit board is a chip-on-film (COF) or a flexible printed circuit (FPC).

Assignees

• Lg Display Co Ltd

Inventors

• Lee Dal Jae
• Park Byung Hwee
• Lee Jung Joo

Classifications

• G09F9/301 Primary

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

• G06F1/1656 Primary

  Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203) · CPC title

• G06F1/1652 Primary

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

• Y10T29/49128

  Assembling formed circuit to base · CPC title

• G09F9/00 Primary

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title