Display method, display device and display apparatus

• US 8,482,693 B2
• Filed: 01/04/2008
• Issued: 07/09/2013
• Est. Priority Date: 01/04/2008
• Status: Expired due to Fees

• Current Assignee: Viatime Media Ltd.
• Original Assignee: Viatime Media Ltd.
• Inventors: Jiang, Zhaoguo
• Primary Examiner(s): PAK, SUNG H
• Application Number:
  US12/811,645
• Publication Number:
  US 20100296023A1
• Time in Patent Office: 2,013 Days
• Field of Search: None
• US Class Current: 349/58
• CPC Class Codes: G02B 26/008 in the form of devices for effecting sequential colour changes, e.g. colour wheels
• CPC Class Codes: G09F 9/37 being movable elements G09F9/302 takes precedence
• CPC Class Codes: G09F 9/375 the position of the elements being controlled by the application of a magnetic field

Abstract

A display method, a display device and a display apparatus are provided. The display method comprises: providing a white reflection plate which can reflect light by itself to generate white light; providing color transparent plates on or outside the white reflection plate, so that corresponding color is displayed when the white light transmits through the color transparent plates.

Claims

1. A display device, comprising:

a series of display cells, each comprising;

a white reflector for reflecting light; and

at least one color filter disposed over said white reflector so that the reflected light can pass through said at least one filter to display a color,

wherein each color filter includes a magnetic rotator;

a control system including a rotator driver for driving the magnetic rotator to move said color filter relative to said white reflector.

2. A display device according to claim 1, further comprising a bracket for supporting said white reflector and said at least one color filter.

3. A display device according to claim 1, wherein the number of said color filters is more than one, and said white reflector and said color filters are overlapped with each other entirely or partially.

4. A display device according to claim 1, wherein said white reflector and said color filter are planar.

5. A display device according to claim 1, wherein said white reflector and said color filter are cylindrical.

6. A display device according to claim 5, further comprising:

a shaft connected to said color filter and said white reflector for supporting said color filter and said white reflector so that said color filter or said color filter and said white reflector can be rotated about said shaft;

a bracket connected to said shaft for supporting the shaft.

7. A display device according to claim 6, further comprising a driving unit connected to said color filter for rotating said color filter about the shaft.

8. A display device according to claim 7,

wherein said magnetic rotator comprises at least one inductive or permanent magnet provided with said color filter;

and

wherein said rotator driver comprises at least one electric magnet with an electric winding connected to a controller for controlling the display device, wherein N and S poles of the electric magnet cooperate with those of the inductive magnet or permanent magnet.

9. A display device according to claim 1, wherein said at least one color filter comprises multiple color filters each including a magnetic rotator, and said rotator driver comprises at least one driver to drive the magnetic rotators.

10. A display device according to claim 9, wherein said rotator driver comprises multiple drivers each corresponding to a magnetic rotator.

11. A display device according to claim 1, wherein said at least one color filter is cylindrical and includes a semi-cylindrial transparent portion.

12. A display screen comprising:

a screen frame;

a screen mounted to said screen frame;

a controller operatively coupled to the screen, wherein said screen comprises a plurality of display cells connected to said controller and each comprising;

a white reflector for reflecting light; and

at least one color filter disposed over said reflector, each of the at least one color filter includes a magnetic rotator; and

a rotator driving system for driving the rotator of each of the at least one color filter,

wherein the controller is operatively coupled to the rotator driving system to individually control the display cells by rotating the at least one color filter relative to the white reflector.

13. A display screen according to claim 12, wherein said display cell further comprises a bracket for supporting said white reflector and said color filter.

14. A display screen according to claim 12, wherein the number of said color filters is more than one, and said color filters are overlapped with each other entirely or partially.

15. A display screen according to claim 12, wherein said white reflector and said color filter are planar.

16. A display screen according to claim 12, wherein said white reflector and said color filter are cylindrical or semi-cylindrical.

17. A display screen according to claim 12, wherein each of said display cells comprises:

a shaft connected to said color filter and said white reflector for supporting said color filter and said white reflector so that said color filter or said color filter and said white reflector can be rotated about said shaft;

a bracket connected to said shaft for supporting the shaft.

18. A display screen according to claim 12, wherein the rotator driving system comprises one rotator driver for the display cells.

19. A display screen according to claim 12,

wherein said magnetic rotator comprises at least one inductive or permanent magnet provided with said at least one color filter;

and

wherein said rotator driving system comprises at least one electric magnet with an electric winding connected to the controller for controlling the display screen, wherein N and S poles of the electric magnet cooperate with those of the inductive magnet or permanent magnet.

20. A display screen according to claim 12,

wherein said magnetic rotator comprises the at least two inductive or permanent magnets provided with said color filter;

and

wherein said rotator driving system comprises at least two electric magnets each with an electric winding connected to the controller for controlling the display screen, wherein N and S poles of the electric magnets cooperate with those of the inductive magnet or permanent magnets.

21. A display screen according to claim 12, wherein the rotator driving system comprises multiple rotator drivers, and wherein each of the display cell includes a rotator driver.

22. A display screen according to claim 21, wherein the rotator driver of each of said display cells comprises at least one electric magnet each with an electric winding connected to the controller for controlling the rotator of each display cell.

23. A display screen according to claim 12, wherein said at least one color filter is cylindrical and includes a semi-cylindrial transparent portion.

24. A display screen according to claim 12, wherein the display screen comprises an array of LEDs placed at corners of each of the display cells.