Organic electronic device that filters colors

• US 20040100176A1
• Filed: 11/21/2002
• Published: 05/27/2004
• Est. Priority Date: 11/21/2002
• Status: Abandoned Application

• Current Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Original Assignee: Osram Opto Semiconductors GmbH (Ams-Osram AG)
• Inventors: Pichler, Karl
• Application Number:
  US10/301,241
• Publication Number:
  US 20040100176A1
• Time in Patent Office: Days
• US Class Current: 313/112
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 50/80 Constructional details
• CPC Class Codes: H10K 50/84 Passivation; Containers; Encapsulations
• CPC Class Codes: H10K 59/10 OLED displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays
• CPC Class Codes: H10K 59/19 Segment displays
• CPC Class Codes: H10K 59/221 Static displays, e.g. displaying permanent logos
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/87 Passivation; Containers; Encapsulations

Abstract

An embodiment of the present invention pertains to an organic electronic device that uses a colored substrate to change an emission spectrum of light passing through the colored substrate. The colored substrate changes the emission spectrum of light passing through it by absorbing light at a portion of the wavelengths, or by absorbing light at a portion of the wavelengths and by reemitting a portion of the absorbed light at different wavelengths. The colored substrate is commercially available.

Another embodiment of the present invention pertains to an organic electronic device that uses a colored device cover on a top electrode to change the emission spectrum of light passing through the colored device cover. The colored device cover changes the emission spectrum of light passing through it by absorbing light at a portion of the wavelengths, or by absorbing light at a portion of the wavelengths and by reemitting a portion of the absorbed light at different wavelengths. The colored device cover is also commercially available.

Claims

1. An organic electronic device, comprising:

a colored substrate;

a bottom electrode on said colored substrate; and

an organic layer on said bottom electrode,

wherein said bottom electrode is substantially transparent and said colored substrate changes an emission spectrum of light passing through said colored substrate.

2. The organic electronic device of claim 1 wherein said colored substrate is comprised of glass, quartz, or plastic.

3. The organic electronic device of claim 2 wherein said glass and said quartz are in a sheet form and said plastic is in a sheet or a continuous foil form.

4. The organic electronic device of claim 1 wherein said organic layer is an organic light-emissive layer that emits said light at a plurality of wavelengths and said change in emission spectrum occurs by said colored substrate absorbing light at a portion of said plurality of wavelengths.

5. The organic electronic device of claim 1 wherein said organic layer is an organic light-emissive layer that emits said light at a plurality of wavelengths and said change in emission spectrum occurs by said colored substrate absorbing light at a first portion of said plurality of wavelengths and re-emitting a second portion of said absorbed light at a different wavelength.

6. The organic electronic device of claim 1 wherein said device is an organic light emitting device (“

OLED”

), a light detector, or a solar cell.

7. The organic electronic device of claim 6 wherein said OLED is incorporated in an OLED display, said light detector is incorporated in a light detector array, and said solar cell is incorporated in a solar cell array.

8. The organic electronic device of claim 7 wherein said OLED display is a dot-matrix display, a segmented display, or an alpha-numeric display.

9. The organic electronic device of claim 1 further comprising

a top electrode on said organic layer;

and

a colored device cover on said top electrode,

wherein said top electrode is substantially transparent and said colored device cover changes an emission spectrum of light passing through said colored device cover.

10. The organic electronic device of claim 9 wherein said change in emission spectrum produced by said colored substrate is different than said change in emission spectrum produced by said colored device cover.

17. The organic electronic device of claim 6 wherein said OLED is incorporated in an OLED display, said light detector is incorporated in a light detector array, and said solar cell is incorporated in a solar cell array.

11. An organic electronic device, comprising:

a substrate;

a bottom electrode on said substrate;

an organic layer on said bottom electrode;

a top electrode on said organic layer; and

a colored device cover on said top electrode,

wherein said top electrode is substantially transparent and said colored device cover changes an emission spectrum of light passing through said colored device cover.

12. The organic electronic device of claim 11 wherein said colored device cover is comprised of glass, quartz, or plastic.

13. The organic electronic device of claim 12 wherein said glass and said quartz are in a sheet form and said plastic is in a sheet or a continuous foil form.

14. The organic electronic device of claim 11 wherein said organic layer is an organic light-emissive layer that emits light at a plurality of wavelengths and said change in emission spectrum occurs by said colored device cover absorbing light at a portion of said plurality of wavelengths.

15. The organic electronic device of claim 11 wherein said organic layer is an organic light-emissive layer that emits light at a plurality of wavelengths and said change in emission spectrum occurs by said colored device cover absorbing light at a first portion of said plurality of wavelengths and re-emitting a second portion of said absorbed light at a different wavelength.

16. The organic electronic device of claim 11 wherein said device is an organic light emitting device (“

OLED”

), a light detector, or a solar cell.

18. A method to fabricate an organic electronic device, comprising:

depositing a colored substrate;

depositing a bottom electrode on said colored substrate; and

depositing an organic layer on said bottom electrode,

wherein said bottom electrode is substantially transparent and said colored substrate changes an emission spectrum of light passing through said colored substrate.

19. The method of claim 18 wherein said colored substrate is comprised of glass, quartz, or plastic.

20. A method to fabricate an organic electronic device, comprising:

depositing a substrate;

depositing a bottom electrode on said substrate;

depositing an organic layer on said bottom electrode;

depositing a top electrode on said organic layer; and

depositing a colored device cover on said top electrode,

wherein said top electrode is substantially transparent and said colored device cover changes an emission spectrum of light passing through said colored device cover.

21. The method of claim 20 wherein said colored device cover is comprised of glass, quartz, or plastic.