Display device

• US 10,312,313 B2
• Filed: 05/01/2017
• Issued: 06/04/2019
• Est. Priority Date: 09/07/2016
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Oh, Hyun-Uk, Yang, Seong-Yul, Oh, Eun Jung
• Primary Examiner(s): Khan, Ibrahim A
• Application Number:
  US15/584,015
• Publication Number:
  US 20180069067A1
• Time in Patent Office: 764 Days
• CPC Class Codes: H05K 1/111 Pads for surface mounting, e.g. lay-out
• CPC Class Codes: H05K 1/147 at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit H05K1/148 takes precedence
• CPC Class Codes: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence
• CPC Class Codes: H05K 2201/058 Direct connection between two or more FPCs or between flexible parts of rigid PCBs
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 2201/10681 Tape Carrier Package [TCP]; Flexible sheet connector
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals

Abstract

A display device according includes a display panel configured to display an image, a first flexible printed circuit film, and a second flexible printed circuit film. The display panel has a first pad area and a second pad area, the first flexible printed circuit film has a third pad area and a fourth pad area, and the second flexible printed circuit film has a fifth pad area and a sixth pad area. The third pad area is bonded to the first pad area, the sixth pad area is bonded to the second pad area, and the fifth pad area is bonded to the fourth pad area. An integrated circuit chip is mounted on the first flexible printed circuit film.

Claims

1. A display device comprising:

a display panel comprising;

pixels configured to display an image in a display area;

a first pad area comprising first pads;

a second pad area comprising second pads; and

a driver disposed in a non-display area outside the display area, the driver being configured to transmit a gate signal to the pixels;

a first flexible printed circuit film comprising;

a third pad area comprising third pads bonded to the first pads;

a fourth pad area comprising fourth pads; and

an integrated circuit chip mounted on the first flexible printed circuit film; and

a second flexible printed circuit film comprising;

a fifth pad area comprising fifth pads bonded to the fourth pads; and

a sixth pad area comprising sixth pads bonded to the second pads,

wherein the integrated circuit chip is configured to;

transmit a data signal to the pixels via at least one of the third pads; and

transmit a gate basic signal to the driver via at least one of the fourth pads and at least one of the sixth pads, the driver being configured to generate the gate signal based on the gate basic signal.

2. The display device of claim 1, wherein the second flexible printed circuit film comprises:

a main body part comprising the fifth pad area; and

an extension projecting from the main body part, the extension comprising the sixth pad area.

3. The display device of claim 2, wherein the second pad area comprises:

a first pad part adjacent to one end of the first pad area; and

a second pad part adjacent to another end of the first pad area.

4. The display device of claim 3, wherein:

the extension comprises;

a first extending part adjacent to one end of the first flexible printed circuit film; and

a second extending part adjacent to another end of the first flexible printed circuit film; and

the sixth pad area comprises;

a first pad part disposed on the first extending part; and

a second pad part disposed on the second extending part.

5. The display device of claim 4, wherein:

pads of the first pad part of the sixth pad area are bonded to pads of the first pad part of the second pad area; and

pads of the second pad part of the sixth pad area are bonded to pads of the second pad part of the second pad area.

6. The display device of claim 1, wherein the second flexible printed circuit film comprises a stabilization circuit, the stabilization circuit being configured to:

receive the gate basic signal from at least one of the fifth pads; and

transmit at least a portion of the gate basic signal to the at least one sixth pad.

7. The display device of claim 1, further comprising:

a power source module configured to;

generate a voltage to drive the pixels; and

transmit the voltage to the pixels via at least one of the sixth pads.

8. The display device of claim 1, wherein:

the display panel further comprises a lighting circuit portion disposed in the non-display area; and

the integrated circuit chip is configured to transmit a constant voltage to the lighting circuit portion via at least one of the sixth pads.

9. The display device of claim 1, wherein the first pad area and the second pad area are disposed on a line extending in a first direction.

10. The display device of claim 1, wherein the second flexible printed circuit film comprises:

a main body part comprising the fifth pad area;

an extension projecting from the main body part; and

a connection part extending from the extension, the connection part comprising the sixth pad area.

11. The display device of claim 10, wherein the first pad area and the second pad area are disposed along different lines substantially parallel to one another.

12. The display device of claim 10, wherein the first pad area is disposed farther from the display area than the second pad area.

17. The display device of claim 1, wherein the first pad area is farther from the display area than the second pad area.

18. The display device of claim 17, wherein a part of the display panel comprising the first pad area projects outwardly away from the display area farther than a part of the display panel comprising the second pad area.

13. A display device comprising:

a display panel configured to display an image, the display panel comprising;

a first pad area comprising first pads; and

a second pad area comprising second pads;

a first flexible printed circuit film comprising;

a third pad area comprising third pads bonded to the first pads;

a fourth pad area comprising fourth pads; and

an integrated circuit chip mounted on the first flexible printed circuit film; and

a second flexible printed circuit film comprising;

a main body part comprising a fifth pad area, the fifth pad area comprising fifth pads bonded to the fourth pads;

an extension projecting from the main body part; and

a connection part extending from the extension, the connection part comprising a sixth pad area, the sixth pad area comprising sixth pads bonded to the second pads,

wherein the first pad area is disposed farther from the display area than the second pad area,

wherein the extension comprises;

a first extending part adjacent to one end of the first flexible printed circuit film; and

a second extending part adjacent to another end of the first flexible printed circuit film, and

wherein the connection part extends from the first extending part and the second extending part in a direction substantially parallel to a direction of extension of the first pad area.

14. The display device of claim 13, wherein the second flexible printed circuit film comprises an opening defined by the main body part, the first extending part, the second extending part, and the connection part.

15. A The display device comprising:

a display panel configured to display an image, the display panel comprising;

a first pad area comprising first pads; and

a second pad area comprising second pads;

a first flexible printed circuit film comprising;

a third pad area comprising third pads bonded to the first pads;

a fourth pad area comprising fourth pads; and

an integrated circuit chip mounted on the first flexible printed circuit film; and

a second flexible printed circuit film comprising;

a fifth pad area comprising fifth pads bonded to the fourth pads; and

a sixth pad area comprising sixth pads bonded to the second pads,

wherein the second flexible printed circuit film overlaps a region between the third pad area of the first flexible printed circuit film and the integrated circuit chip.

16. The display device of claim 15, wherein the second flexible printed circuit film comprises an opening overlapping the integrated circuit chip.