IP Library Granted Patent US 7,586,576
Granted Patent B2
US 7,586,576 · App. 11/240,260 · Granted Sep 8, 2009

Mother plate for a flexible printed circuit film formed with a cutting pattern and display device provided with a flexible printed circuit film cut from the same

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Quick Facts
Patent No.
US 7,586,576
App. No.
11/240,260
Granted
Sep 8, 2009
Kind
B2
Abstract

The present invention relates to a mother plate for a flexible printed circuit film with a cutting mark and a display device provided with a flexible printed circuit film cut from the same. The display device includes a display panel for a panel unit displaying an image, a display panel electrode formed on the display panel, and a flexible printed circuit film electrically connected to a terminal of the display panel electrode. The flexible printed circuit film includes a wiring electrically connected to the display panel electrode, and a cutting mark having a cutting portion formed to be adjacent to the wiring in at least one edge of the flexible printed circuit film.

Claims (42)

1. A display device comprising:

a display panel for a panel unit displaying an image;

a display panel electrode formed on the display panel; and

a flexible printed circuit film electrically connected to a terminal of the display panel electrode, wherein the flexible printed circuit film includes:

a plurality of wirings electrically connected to the display panel electrode and extending along one direction, and

a cutting mark indicating where the flexible printed circuit film is to be cut, the cutting mark formed in a corner of the flexible printed circuit film and having an edge coinciding with an edge of the flexible printed circuit film, wherein the cutting mark has a width extending along the direction of the width of the wirings and has a different shape than other layouts on the flexible printed circuit film.

2. The display device of claim 1 , wherein the flexible printed circuit film further includes an align mark for aligning the flexible printed circuit film with the display panel electrode and having a shape different from the cutting mark.

3. The display device of claim 2 , wherein the flexible printed circuit film has a dummy area that is not electrically connected to the display panel electrode, and the align mark is formed in the dummy area.

4. The display device of claim 1 , wherein the flexible printed circuit film has a dummy area that is not electrically connected to the display panel electrode, and the cutting mark is formed in the dummy area.

5. The display device of claim 4 , wherein the dummy area has a dummy wiring extending substantially parallel to the wiring, and the cutting mark is connected to the dummy wiring.

6. The display device of claim 4 , wherein the dummy area has a dummy wiring extending substantially parallel to the wiring, and the cutting mark is spaced apart from the dummy wiring.

7. The display device of claim 1 , wherein the flexible printed circuit film further includes:

a base film receiving the wiring and the cutting mark; and

a cover film formed on the base film and partially covering the wiring.

8. The display device of claim 7 , wherein the edge of the cutting portion and an edge of the wiring form a substantially straight line.

9. The display device of claim 7 , wherein the cutting mark is formed at the edge of the base film.

10. The display device of claim 7 , wherein the cutting mark is exposed on the base film together with the wiring.

11. The display device of claim 1 , wherein the cutting mark has a rectangular shape.

12. The display device of claim 1 , wherein the width of the cutting mark is greater than the width of the wiring.

13. The display device of claim 1 , wherein a driver integrated circuit chip is mounted in the flexible printed circuit film.

14. The display device of claim 1 , wherein the display panel electrode is electrically connected to a driver integrated circuit chip mounted in the display panel.

15. The display device of claim 1 , further comprising a backlight assembly for supplying light to the display panel.

16. The display device of claim 1 , wherein the length of the cutting mark along the direction parallel to the wiring is from about 100 μm to about 200 μm.

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

a color filter panel disposed on the display panel; and

a liquid crystal layer interposed between the display panel and the color filter panel,

wherein the display panel is a thin film transistor panel.

18. The display device of claim 1 , wherein the display device is for a cellular phone.

19. A mother plate for a flexible printed circuit film comprising:

a base film, and

a plurality of wiring units formed on the base film,

wherein each of the wiring units includes:

a plurality of wirings formed on the base film with a predetermined pattern; and

a cutting mark formed adjacent to the wirings to visibly indicate a position of a cutting line for separating each of the wiring units from the mother plate and having a width extending along the direction of the width of the wirings.

20. The mother plate for a flexible printed circuit film of claim 19 , wherein the cutting line is formed as a straight line along the width direction of the wiring.

21. The mother plate for a flexible printed circuit film of claim 20 , wherein the cutting line passes through the center of the cutting mark.

22. The display device of claim 1 , wherein the cutting mark is wider than the wiring.

23. The mother plate of claim 19 , wherein the cutting mark is wider than each of the wirings.

24. The display device of claim 1 , wherein the wiring is rectilinear throughout the flexible printed circuit film.

25. The mother plate of claim 19 , wherein the mother plate is divided into blocks with each of the blocks having a cutting mark, further comprising a cover film having a substantially identical pattern in each of the blocks.

26. The display device of claim 1 , wherein the cutting mark is positioned such that a portion of it remains on the flexible printed circuit film after cutting.

27. The mother plate of claim 19 , wherein the cutting mark is positioned such that a portion of it remains on the wiring units after the wiring units are separated from the mother plate.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 21, 2012
From: SAMSUNG ELECTRONICS CO., LTD.
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028999/0851 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2005
From: PARK, HEE-YOUNG; KIM, YUN-HEE
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 017063/0691 →