Flexible display device having support layer with rounded edge

Patent metadata

Field	Value
Publication number	US-10505147-B2
Application number	US-201715820158-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Dec 15, 2014
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

There is provided a flexible display having a plurality of innovations configured to allow bending of a portion or portions to reduce apparent border size and/or utilize the side surface of an assembled flexible display.

First claim

What is claimed is:

1. A flexible organic light-emitting diode (OLED) display apparatus, comprising:
a flexible base layer having a substantially flat portion and a bent portion; and
a printed circuit film with at least one driving integrated circuit and a first set of connectors connected to a corresponding set of connectors provided in the bent portion of the flexible base layer,
wherein a first connector of the first set of connectors is without a valley pattern and second connectors of the first set of connectors are with the valley pattern extended to a scribed edge of the printed circuit film, and
wherein the first connector is disposed between the second connectors.

2. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the plurality of connectors on the flexible base layer is positioned toward a scribed edge of the flexible base layer outside a bend allowance section.

3. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the connector without the valley pattern is a part of a bypassing conductive line routed across the printed circuit without being connected to the driving integrated circuit.

4. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the connector without the valley pattern is a dummy connector positioned between two connectors that provide opposite signals of one another.

5. The flexible organic light-emitting diode (OLED) display apparatus of claim 4 , wherein the dummy connector without the valley pattern is positioned between a connector transmitting a gate high voltage (VGH) signal and a connector transmitting a gate low voltage (VGL) signal.

6. The flexible organic light-emitting diode (OLED) display apparatus of claim 5 , wherein the dummy connector without the valley pattern is positioned between a connector transmitting a positive power supply voltage signal (VDD) and a connector transmitting a negative power supply voltage signal (VSS).

7. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the connector without the valley pattern is included in a group of adjacently positioned connectors transmitting a same kind of signals as each other.

8. The flexible organic light-emitting diode (OLED) display apparatus of claim 7 , wherein each of the adjacently positioned connectors in the group is configured to transmit a clock signal.

9. The flexible organic light-emitting diode (OLED) display apparatus of claim 7 , wherein each of the plurality of connectors positioned adjacent to each other adjacently positioned connectors in the group is configured to transmit a data signal.

10. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the connector without the valley pattern is included in a group of adjacently positioned connectors transmitting the same signal as each other.

11. The flexible organic light-emitting diode (OLED) display apparatus of claim 10 , wherein all of the adjacently positioned connectors of the group are configured to transmit a positive power supply voltage signal (VDD) or a negative power supply voltage signal (VSS).

12. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein at least some part of the valley pattern is covered by a solder resist layer.

13. The flexible organic light-emitting diode (OLED) display apparatus of claim 12 , wherein the solder resist layer covers a side surface of the valley pattern at the scribed edge of the printed circuit film.

14. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the printed circuit includes a second set of connectors connected to a plurality of corresponding set of connectors on another printed circuit, and wherein at least one connector among the second set of connectors is without a valley pattern.

15. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the valley patterns formed by cutting, during a scribing process, a portion of the second connectors extending beyond the scribing edge to connect to corresponding test pads.

16. The flexible organic light-emitting diode (OLED) display apparatus of claim 1 , wherein the valley patterns extend beyond the respective connector to the scribed edge of the printed circuit film and terminate at the scribed edge of the printed circuit film.

17. The flexible organic light-emitting diode (OLED) display apparatus of claim 16 , wherein each of the valley patterns is thinner than a corresponding contact area of the second connectors.

Assignees

• Lg Display Co Ltd

Inventors

• Lee Jun Seok

Classifications

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B32B2255/26

  Polymeric coating · CPC title

• B32B2305/022

  Foam · CPC title

• B32B3/04

  characterised by {at least one} layer folded at the edge, e.g. over another layer {; characterised by at least one layer enveloping or enclosing a material} · CPC title