Laminated film, electron element, printed circuit board and display device

• US 10,151,944 B2
• Filed: 12/05/2016
• Issued: 12/11/2018
• Est. Priority Date: 12/25/2015
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Taguchi, Motoyumi
• Primary Examiner(s): Nguyen, Hoa C
• Assistant Examiner(s): Tso, Stanley
• Application Number:
  US15/369,185
• Publication Number:
  US 20170188469A1
• Time in Patent Office: 736 Days
• Field of Search: 174260
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2305/02 Cellular or porous
• CPC Class Codes: B32B 2307/206 Insulating
• CPC Class Codes: B32B 2457/08 PCBs, i.e. printed circuit boards
• CPC Class Codes: B32B 2457/202 LCD, i.e. liquid crystal displays
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 3/3677 suitable for active matrices only
• 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 2201/0116 Porous, e.g. foam
• CPC Class Codes: H05K 2201/10015 Non-printed capacitor
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 2203/1311 Foil encapsulation, e.g. of mounted components
• CPC Class Codes: H05K 3/284 for encapsulating mounted components H05K1/185 takes precedence

Abstract

According to one embodiment, a laminated film includes a first adhesive layer, a first insulating layer which faces the first adhesive layer, a first metal layer which is located between the first adhesive layer and the first insulating layer, and a first porous layer which is located between the first adhesive layer and the first insulating layer and faces the first metal layer.

Claims

1. A display device comprising:

a display panel comprising a display surface, a first substrate, and a plurality of pixels arranged between the first substrate and the display surface; and

a printed circuit board coupled to the display panel, wherein

the printed circuit board comprises;

a core substrate including a first surface, and a second surface opposite to the first surface;

an oscillatory source provided on the first surface of the core substrate; and

a laminated film provided beyond the oscillatory source from the first surface, or facing the oscillatory source through the core substrate, and

the laminated film comprises;

a first adhesive layer in direct contact with at least one of the oscillatory source or the core substrate;

a first insulation layer; and

a first porous layer located between the first adhesive layer and the first insulation layer,

the first porous layer is in contact with at least one of the first insulation layer or the first adhesive layer, and

the oscillatory source and the laminated film are not located between the display surface and the first substrate.

2. The display device of claim 1, wherein

the laminated film comprises a first metal layer located between the first adhesive layer and the first insulating layer.

3. The display device of claim 2, wherein

the laminated film comprises a second insulation layer located between the first metal layer and the first porous layer.

4. The display device of claim 1, wherein

the laminated film comprises a first metal layer located between the first adhesive layer and the first porous layer.

5. The display device of claim 1, wherein

the laminated film is stuck to the oscillatory source, and is further stuck to the first surface in a whole circumference surrounding the oscillatory source.

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

another laminated film which faces the oscillatory source through the core substrate and is stuck to the second surface, wherein

the laminated film is provided beyond the oscillatory source from the first surface,

the first adhesive layer is in direct contact with the oscillatory source, and

the other laminated film comprises;

a second adhesive layer in direct contact with the core substrate; and

at least one of a second metal layer and a second porous layer located beyond the second adhesive layer from the core substrate.

7. The display device of claim 1, wherein

the oscillatory source is a capacitor.

8. The display device of claim 7, wherein

the capacitor is a ceramic capacitor.

9. The display device of claim 7, wherein

the capacitor is connected to a circuit which performs discharge and charge in specific cycles.

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

a plurality of non-oscillatory sources provided on the first surface of the core substrate, wherein

the oscillatory source is located in a central region of an area in which the oscillatory source and the non-oscillatory sources are provided, and

the laminated film is arranged on the oscillatory source and at least one of the non-oscillatory sources.

11. The display device of claim 1, wherein

a distance from an end of the oscillatory source to an end of the laminated film facing the end of the oscillatory source is greater than or equal to 1.5 mm.

12. The display device of claim 1, wherein

the laminated film comprises a first metal layer which is formed of copper.

13. The display device of claim 1, wherein

the first porous layer is formed of a porous material of nonwoven fabric.