Partial overlapping display tiles of organic light emitting device

• US 7,362,046 B2
• Filed: 03/29/2004
• Issued: 04/22/2008
• Est. Priority Date: 11/10/2001
• Status: Expired due to Fees

• Current Assignee: Image Portal Limited
• Original Assignee: Image Portal Limited
• Inventors: Aston, Mark
• Primary Examiner(s): Williams, Joseph
• Assistant Examiner(s): FEATHERLY, HANA SANEI
• Application Number:
  US10/813,541
• Publication Number:
  US 20040256977A1
• Time in Patent Office: 1,485 Days
• Field of Search: 313/498, 313/504, 313/512, 349/73
• US Class Current: 313/498
• CPC Class Codes: G02F 1/13336 Combining plural substrates to produce large-area displays, e.g. tiled displays
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: H10K 59/18 Tiled displays

Abstract

Display 100 has three adjacent display tiles 10, each having a mould plastics support 11, a glass panel 12 incorporating the OLED element and an interface pcb 17. These tiles 10 form part of a full-color advertising screen of dimensions 1.2 meter by 1.8 meter, used in indoor public places.

Claims

1. A display comprising a plurality of display tiles, each tile comprising a portion to support a display region incorporating an Organic Light Emitting Device (OLED) material, said OLED material comprising a plurality of separately addressable pixel elements, wherein the portion is at a tilt angle θ

_c of less than 12°

to the main plane of the display wherein;

${\mathrm{\theta <br><br>}}_c={\tan }^{-1}<br><br>\left(\frac{\sqrt{1^2+w^2}}{3<br><br>t}\right)$

l being the tile length, w being the tile width and t being the tile thickness.

2. A display comprising a plurality of display tiles, each tile comprising a portion to support a display region incorporating an Organic Light Emitting Device (OLED) material with a plurality of separately addressable pixel elements, wherein the portion is at a tilt angle θ

to the main plane of the display comprising a compound angle θ

_c, having a nonzero horizontal tilt angle θ

_h and a nonzero vertical tilt angle θ

_v, wherein;

${\mathrm{\theta <br><br>}}_c={\tan }^{-1}<br><br>\left(\frac{\sqrt{1^2+w^2}}{3<br><br>t}\right)$

l being the tile length, w being the tile width and t being the tile thickness.

3. A display according to claim 2 wherein the portion is at a compound tilt angle θ

_c, which is in the range 0.5°

to 12°

.

4. A display according to claim 2 wherein the portion is at a compound tilt angle θ

_c, which is in the range 0.5°

to 6°

.

5. A display according to claim 2 wherein the portion is at a compound angle θ

_cin the range 3.0°

to 3.4°

.

6. A display according to claim 2 wherein the portion is at a horizontal tilt angle θ

_h of less than 3°

.

7. A display according to claim 2 wherein the portion is at a vertical tilt angle θ

_vof less than 3.5°

.

8. A display according to claim 2 wherein a first portion and a second portion of a tile are in substantially parallel planes.

9. A display according to claim 2 wherein a first and second portions of a tile are in a stepped relationship.

10. A display according to claim 2 wherein a first and second portions of a tile are arranged generally in a U-shape.

11. A display according to claim 2 wherein a second portion incorporates wiring and/or electrical connections.

12. A display according to claim 2 wherein the portion comprises a tile to hold a glass panel of an OLED element.

13. A display according to claim 2 wherein the portion comprises a moulded holder of plastic material.

14. A display according to claim 2 comprising heat seal means to ensure high integrity connection of the display to drive electronics.

15. A display according to claim 2 wherein the pixel elements have integral means to generate illumination.

16. A display according to claim 2 comprising means to effect back lighting illumination of a plurality of pixel elements.

17. A display according to claim 2 comprising a plurality of display regions, each incorporating Organic Light Emitting Device (OLED) material, each region comprising a plurality of separately addressable pixel elements.

18. A display according to claim 2 wherein one or more further display regions overlie part of another display region(s).

19. A display array according to claim 2 wherein portions of display areas which lie underneath other display areas incorporate at least one of wiring or electrical connections.

20. A display according to claim 2 comprising a plurality of display regions which overlie part of a display region of at least one of a laterally or orthogonally adjacent display region.

21. A display according to claim 2 wherein the display regions form a substantially continuous array over a display surface.

22. A display according to claim 2 comprising a plurality of OLED pixel array tiles.

23. A display according to claim 2 comprising a plurality of electronic paper tiles.

24. A display according to claim 2 wherein a substrate comprises a passive matrix display device.

25. A display according to claim 2 wherein the main plane of the display comprises a plane incorporating the nearest point of each OLED display first portion to an observer of the display.

26. A display comprising a plurality of display tiles, each of said display tiles further including:

a. a support member;

b. a printed circuit board positioned on said support member;

c. a panel having an OLED element operatively connected to said circuit board at a compound tilt angle θ

_c to the main plane of the display for the printed circuit board to underlie part of another tile, said compound tilt angle θ

_c, comprising a nonzero horizontal tilt angle θ

_h and a nonzero vertical tilt angle θ

_v; and

d. wherein said display tiles are positioned in an overlapping array to form a substantially three dimensional display.

27. A display comprising a plurality of display tiles forming a main plane of said display, each of said display tiles further comprising:

a. a support member;

b. an OLED element operatively connected to said support member at a compound tilt angle θ

_c to said main plane of said display, said compound tilt angle θ

_c, comprising a nonzero horizontal tilt angle θ

_h, and a nonzero vertical tilt angle θ

_v; and

c. wherein said display tiles are positioned such that said OLED elements are an overlapping array forming a substantially three dimensional display.

28. A display according to claim 27, wherein said compound tilt angle θ

_c is in the range 0.5°

to 6°

.

29. A display according to claim 27, further comprising a plurality of display regions, each incorporating Organic Light Emitting Device (OLED) material, each region comprising a plurality of separately addressable pixel elements.

30. A display array according to claim 27, wherein portions of display areas which lie underneath other display areas incorporate at least one of wiring or electrical connections.

31. A display according to claim 27, wherein said display tiles overlie part of a display region of at least one of a laterally or orthogonally adjacent display tile.

32. A display according to claim 27, further comprising a plurality of electronic paper tiles.

33. A display according to claim 27, wherein a substrate comprises a passive matrix display device.

34. A display according to claim 27, wherein each tile comprises a portion to support a display region and the main plane of the display comprises a plane incorporating the nearest point of each OLED portion to an observer of the display.