Flexible display device

Patent metadata

Field	Value
Publication number	US-10892312-B2
Application number	US-201815998514-A
Country	US
Kind code	B2
Filing date	Aug 16, 2018
Priority date	Aug 16, 2017
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

A flexible display device may include a flexible display panel including a display area disposed a plurality of pixels, a signal line area disposed a plurality of signal lines for transmitting driving signals to the plurality of pixels, and a panel pad area disposed a plurality of panel pads for receiving an external driving signal, and a flexible film configured to transmit the driving signals inputted from an external to the flexible display panel and including a film pad area in which a plurality of film pads arranged so as to correspond to the plurality of panel pad, wherein the plurality of film pads has a first thickness configured to increase a contact surface with the flexible display panel.

First claim

What is claimed is:

1. A flexible display device comprising:
a flexible display panel including a flexible substrate and back plates, the flexible substrate including a display area, a signal line area, a panel pad area and a bending area between the signal line area and the panel pad area;
a plurality of pixels disposed at the display area of the flexible substrate;
a plurality of signal lines disposed at the signal line area of the flexible substrate and extending to the panel pad area of the flexible substrate for transmitting driving signals to the plurality of pixels;
a plurality of panel pads disposed at the panel pad area of the flexible substrate for receiving the driving signals from outside,
wherein the back plates includes a first back plate disposed under the flexible substrate corresponding to the display area and the signal line area of the flexible substrate and a second back plate disposed under the flexible substrate corresponding to the panel pad area of the flexible substrate, and
wherein the second back plate is disposed under the first back plate to face the first back plate; and
a flexible film transmitting the driving signals inputted from the outside to the flexible display panel and including a film pad area in which a plurality of film pads corresponds to the plurality of panel pad,
wherein the plurality of panel pads of the flexible display panel and the plurality of film pads of the flexible film are arranged to correspond to each other in a fan shape and have different pitches and slopes from each other.

2. The flexible display device of claim 1 , wherein slopes of the plurality of panel pads of the flexible display panel in a fan-shape and slopes of the plurality of film pads of the flexible film are converged at a same point.

3. The flexible display device of claim 2 , wherein an overlapping area between the plurality of panel pads of the flexible display panel and the plurality of film pads of the flexible film increases by y-axis correction.

4. The flexible display device of claim 2 , wherein the plurality of panel pads corresponds to a size of a driver IC and a size of the panel pad area.

5. The flexible display device of claim 1 , wherein the plurality of panel pad rows includes a first panel pad row, a second panel pad row and a third panel pad row and is arranged in the panel pad area,
wherein a first pad of the second panel pad row is disposed at a half point between a first pad and a second pad of the first panel pad row, and a first pad of the third panel pad row is disposed at one-third point between the first pad and the second pad of the first panel pad row.

6. The flexible display device of claim 5 , wherein a pitch between the plurality of panel pads arranged in the first panel pad row, a pitch between the plurality of panel pads arranged in the second panel pad row, and a pitch between the plurality of panel pads arranged in the third panel pad row are different from one another.

7. The flexible display device of claim 1 , wherein the bending area is narrower than the display area and the panel pad area.

8. The flexible display device of claim 1 , wherein the panel pad area and the film pad area have an alignment mark including a scale pattern or a specific pattern for measuring a degree of y-axis correction.

Assignees

• Lg Display Co Ltd

Inventors

• Won Jooyeon

Classifications

• H10W46/607

  Located on parts of packages, e.g. on encapsulations or on package substrates · CPC title

• H10W46/301

  for alignment · CPC title

• H10W46/101

  characterised by the type of information, e.g. logos or symbols · CPC title

• H10W46/00

  Marks applied to devices, e.g. for alignment or identification · CPC title

• Y02E10/549

  Organic PV cells · CPC title