Multicolor display devices

• US 6,013,982 A
• Filed: 12/23/1996
• Issued: 01/11/2000
• Est. Priority Date: 12/23/1996
• Status: Expired due to Term

• Current Assignee: The Trustees of Princeton University (Princeton University), University of Southern California
• Original Assignee: The Trustees of Princeton University (Princeton University), University of Southern California
• Inventors: Forrest, Stephen R., Thompson, Mark E.
• Primary Examiner(s): Patel, Ashok
• Application Number:
  US08/772,333
• Time in Patent Office: 1,114 Days
• Field of Search: 313/506, 313/504, 313/509, 313/512, 313/503, 313/498, 313/501, 428/917, 428/690, 315/169.3, 315/382.1, 434/307 R, 362/24, 362/88, 362/812, 345/30
• US Class Current: 313/506
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H05B 33/12 Light sources with substantially two-dimensional radiating surfaces
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: Y10S 428/917 Electroluminescent

Abstract

The present invention concerns a multicolor display device, comprising a transparent substrate, fluorescent dye deposited in a dye layer onto the substrate by ink jet printing, and a source of radiation for illuminating said fluorescent dye. The present invention also concerns methods for creating such a device.

Claims

1. A display, comprising:

a transparent substrate;

fluorescent dye-containing material deposited in a dye layer onto said substrate by ink jet printing; and

a source of radiation for illuminating said fluorescent dye;

wherein said display is passive.

2. The display of claim 1, wherein

said substrate has a front side and a rear side;

said fluorescent dye-containing material is provided on the front side of the substrate; and

said source is positioned to illuminate the rear side of the substrate.

3. The display of claim 1, wherein said fluorescent dye-containing material comprises one or more fluorescent dyes and a matrix material.

4. The display of claim 3, wherein said dye is present in an amount ranging from about 0.1 to about 6 wt % relative to said matrix material.

5. The display of claim 3, wherein said matrix material is selected from polymethylmethacrylate, polyvinylcarbazole, polybutadiene, polyesters and N,N'"'"'-diphenyl-N,N'"'"'bis(3-methylphenyl)-1,1'"'"'-biphenyl-4,4'"'"'-diamine.

6. The display of claim 1, wherein said substrate is selected from glass and polyester.

7. A computer incoporating the display of claim 1.

8. A television incoporating the display of claim 1.

9. A large area wall, theater or stadium screen incoporating the display of claim 1.

10. A billboard or sign incoporating the display of claim 1.

11. A vehicle incorporating the display of claim 1.

12. A printer incoporating the display of claim 1.

13. A telecommunications device incorporating the display of claim 1.

14. A telephone incorporating the display of claim 1.

15. The display of claim 1, wherein said radiation comprises ultraviolet radiation.

16. The display of claim 15, wherein said source of radiation comprises a fluorescent tube.

17. The display of claim 1, wherein said radiation comprises visible radiation.

18. The display of claim 17, wherein said radiation comprises blue radiation.

19. The display of claim 1, wherein said source of radiation comprises an organic light emitting material.