Display apparatus

• US 8,513,880 B2
• Filed: 02/22/2010
• Issued: 08/20/2013
• Est. Priority Date: 02/24/2009
• Status: Active Grant

• Current Assignee: OKI Electric Industry Company Limited
• Original Assignee: Oki Data Corporation (OKI Electric Industry Company Limited)
• Inventors: Suzuki, Takahito, Igari, Tomoki
• Primary Examiner(s): Mai, Anh
• Assistant Examiner(s): COUGHLIN, ANDREW J
• Application Number:
  US12/709,549
• Publication Number:
  US 20100214200A1
• Time in Patent Office: 1,275 Days
• Field of Search: 313/498, 313/500, 313/505
• US Class Current: 313/505
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/73267 Layer and HDI connectors
• CPC Class Codes: H01L 24/24 of an individual high density interconnect connector
• CPC Class Codes: H01L 24/82 by forming build-up interconnects at chip-level, e.g. for high density interconnects [HDI] interconnection structure between a plurality of semiconductor chips H01L23/5389
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/01005 Boron [B]
• CPC Class Codes: H01L 2924/01006 Carbon [C]
• CPC Class Codes: H01L 2924/01013 Aluminum [Al]
• CPC Class Codes: H01L 2924/01029 Copper [Cu]
• CPC Class Codes: H01L 2924/01033 Arsenic [As]
• CPC Class Codes: H01L 2924/01078 Platinum [Pt]
• CPC Class Codes: H01L 2924/01079 Gold [Au]
• CPC Class Codes: H01L 2924/10329 Gallium arsenide [GaAs]
• CPC Class Codes: H01L 2924/12041 LED
• CPC Class Codes: H01L 33/62 Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls

Abstract

A high-definition, high-intensity display apparatus having a plurality of semiconductor thin film light emitting elements and a plurality of linear electrodes connecting a power source to the light emitting elements, the linear electrodes being disposed so as to minimize the voltage drop across the linear electrodes.

Claims

1. A display apparatus comprising:

a plurality of first linear electrodes extending on a planer substrate in a first direction;

a plurality of second linear electrodes extending in a second direction orthogonal to the first direction and spaced from the first linear electrodes in a third direction orthogonal to the plane of the substrate;

a plurality of physically separate first insulating films provided on the second linear electrodes at intersections of the first and second linear electrodes;

a plurality of semiconductor thin film light emitting elements each provided on a respective first insulating film, wherein each semiconductor thin film light emitting element includes an upper surface and a lower surface, the upper surface having a first conductive electrode and a second conductive electrode, the first and second conductive electrodes are formed at the upper surface, and the lower surface contacting the respective first insulating film, wherein a center of each semiconductor thin film light emitting element is provided directly above a respective one of the intersections;

a first connection wire electrically connecting the first linear electrodes and the second conductive electrodes; and

a second connection wire electrically connecting the second linear electrodes and the first conductive electrodes.

2. The display apparatus according to claim 1, wherein

the first and second linear electrodes are insulated from each other by a second insulating film provided there-between.

3. The display apparatus according to claim 2 wherein,

the first connection wire electrically connects the second conductive electrodes and portions of the first linear electrodes that are exposed from the second insulating film;

and

the second connection wire electrically connects the first conductive electrodes and portions of the second linear electrodes that are exposed from the respective first insulating film.

4. The display apparatus according to claim 2, wherein

the second insulating film is in direct physical contact with both a respective first linear electrode and a respective second linear electrode.

5. The display apparatus according to claim 1 wherein,

each first insulating film is comprised of a material that transmits light emitted from the semiconductor thin film light emitting elements.

6. The display apparatus according to claim 1, wherein

each respective first insulating film has a width being narrower than a width of a respective second linear electrode.

7. The display apparatus according to claim 6, wherein

each light emitting element has a width being narrower than a respective first insulating film.

8. A display apparatus comprising:

a plurality of first linear electrodes extending on a planer substrate in a first direction;

a plurality of second linear electrodes extending in a second direction orthogonal to the first direction and spaced from the first linear electrodes in a third direction orthogonal to the plane of the substrate;

an opaque insulating film provided on substantially the entire upper surface of the substrate including the intersections of the first and second linear electrodes and areas other than the intersections;

a plurality of semiconductor thin film light emitting elements, each one having an upper surface and a lower surface, the upper surface having a first conductive electrode and a second conductive electrode, the first and second conductive electrodes are formed on the upper surface, and the lower surface being connected to the opaque insulating film, wherein a center of each semiconductor thin film light emitting element is provided directly above a respective one of the intersections;

a first connection wire electrically connecting the first linear electrodes the second conductive electrodes; and

a second connection wire electrically connecting the second linear electrodes and the first conductive electrodes.

9. The display apparatus according to claim 8, wherein

the first and second linear electrodes are insulated from each other by an interlayer insulation film provided there-between.

10. The display apparatus according to claim 9 wherein,

the first connection wire electrically connects the second conductive electrodes and portions of the first linear electrodes that are exposed from the interlayer insulation film;

and

the second connection wire electrically connects the first conductive electrodes and portions of the second linear electrodes that are exposed from the opaque insulating film.

11. The display apparatus according to claim 9, wherein

the interlayer insulation film is in direct physical contact with both a respective first linear electrode and a respective second linear electrode.

12. The display apparatus according to claim 8, wherein the opaque insulating film is in direct physical contact with the plurality of second linear electrodes.

13. A display apparatus comprising:

a plurality of first linear electrodes extending on a planer substrate in a first direction;

a plurality of second linear electrodes extending in a second direction orthogonal to the first direction and spaced from the first linear electrodes in a third direction orthogonal to the plane of the substrate;

a first insulating film provided on the second linear electrodes at an intersection of the first and second linear electrodes;

a plurality of semiconductor thin film light emitting elements, each one having an upper surface and a lower surface, the upper surface having a first conductive electrode and a second conductive electrode, the first and second conductive electrodes are formed at the upper surface, and the lower surface being in direct physical contact with the top surface of the first insulating film, wherein a center of each semiconductor thin film light emitting element is provided directly above a respective one of the intersections;

a first connection wire electrically connecting the first linear electrodes and the second conductive electrodes; and

a second connection wire electrically connecting the second linear electrodes and the first conductive electrodes.

14. The display apparatus according to claim 13, wherein

the first and second linear electrodes are insulated from each other by a second insulating film provided there-between.

15. The display apparatus according to claim 14 wherein,

the first connection wire electrically connects the second conductive electrodes and portions of the first linear electrodes that are exposed from the second insulating film;

and

the second connection wire electrically connects the first conductive electrodes and portions of the second linear electrodes that are exposed from the respective first insulating film.

16. The display apparatus according to claim 13 wherein,

each first insulating film is comprised of a material that transmits light emitted from the semiconductor thin film light emitting elements.

17. The display apparatus according to claim 13, wherein the first insulating film is in direct physical contact with the plurality of second linear electrodes.