DISPLAY SYSTEM

• US 20090009442A1
• Filed: 07/02/2007
• Published: 01/08/2009
• Est. Priority Date: 07/02/2007
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Galbraith, Walter J. JR., Chen, Wei, Yin, Victor, Zhong, John
• Granted Patent: US 8,169,388 B2
• Time in Patent Office: Days
• US Class Current: 345/83
• CPC Class Codes: G02B 6/0023 provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133609 including means for improving the color mixing, e.g. white

Abstract

A display system provides a display assembly having a display screen. LEDs are presorted into a plurality of groups, each group of LEDs having substantially the same color that is different than the color of another group. LEDs are selected from one of the groups. The selected LEDs are mounted in the display assembly to illuminate the display screen. A non-electronic color adjuster is mounted in the light path from the selected LEDs to shift the light color to a predetermined color.

Claims

1. A display system, comprising:

a display assembly having a display screen;

LEDs that are;

selected to each produce substantially the same color; and

mounted to illuminate the display screen; and

a non-electronic color adjuster in the light path from the LEDs to shift the light color to a predetermined color.

2. The system as claimed in claim 1 wherein the color adjuster adjusts the light to a predetermined white point color.

3. The system as claimed in claim 1 wherein the color adjuster is an optical film.

4. The system as claimed in claim 1 wherein the color adjuster is a first optical film and a second optical film.

5. The system as claimed in claim 1:

further comprising a removable light strip; and

wherein the LEDs are mounted on the removable light strip.

6. The system as claimed in claim 1 wherein the LEDs are side firing LEDs.

7. The system as claimed in claim 1:

wherein the LEDs are first LEDs; and

further comprising;

second LEDs that produce different colored light than the first LEDs; and

a second non-electronic color adjuster in the light path from the second LEDs to shift the light color to the predetermined color.

8. A display system, comprising:

a display assembly having an LCD display screen;

LEDs that are;

selected from a bin to each produce substantially the same color; and

mounted in the display assembly to illuminate the LCD display screen; and

a non-electronic color adjuster in the light path from the LEDs and between the LEDs and the LCD display screen to shift the light color to a predetermined color.

9. The system as claimed in claim 8 wherein the color adjuster adjusts the light to a predetermined white point color.

10. The system as claimed in claim 8 wherein the color adjuster is an optical film.

11. The system as claimed in claim 8 wherein the color adjuster is a first optical film and a second optical film.

12. The system as claimed in claim 8:

further comprising a removable light strip; and

wherein the LEDs are mounted on the removable light strip.

13. The system as claimed in claim 8 wherein the LEDs are side firing LEDs.

14. The system as claimed in claim 8 further comprising:

second LEDs that are selected from a second bin; and

a second non-electronic color adjuster in the light path from the second LEDs and between the second LEDs and the LCD display screen to shift the light color to the predetermined color.

15. A display system comprising:

providing a display assembly having a display screen;

presorting LEDs into a plurality of groups, each group of LEDs having substantially the same color that is different than the color of another group;

selecting LEDs from one of the groups;

mounting the selected LEDs in the display assembly to illuminate the display screen; and

mounting a non-electronic color adjuster in the light path from the selected LEDs to shift the light color to a predetermined color.

16. The system as claimed in claim 15 wherein the color adjuster shifts the light to a predetermined white point color.

17. The system as claimed in claim 15 wherein mounting the color adjuster further comprises mounting an optical film.

18. The system as claimed in claim 15 wherein mounting the color adjuster further comprises mounting a first optical film and a second optical film.

19. The system as claimed in claim 15 wherein mounting the LEDs further comprises:

mounting the LEDs on a removable light strip; and

mounting the removable light strip in the display assembly.

20. The system as claimed in claim 15 wherein presorting the LEDs into a plurality of groups further comprise presorting side firing LEDs into a plurality of groups.

21. The system as claimed in claim 15 further comprising:

selecting LEDs from a second group;

mounting the LEDs selected from the second group in the display assembly to illuminate the display screen; and

mounting a second non-electronic color adjuster in the light path from the LEDs selected from the second group to shift the light color to the predetermined color.

22. A display system comprising:

providing a display assembly having an LCD display screen;

presorting LEDs into a plurality of bins, each bin of LEDs having substantially the same color that is different than the color of another bin;

selecting LEDs from one of the bins;

mounting the selected LEDs in the display assembly to illuminate the LCD display screen; and

mounting a non-electronic color adjuster in the light path from the selected LEDs between the LEDs and the LCD display screen to shift the light color to a predetermined color.

23. The system as claimed in claim 22 wherein the color adjuster shifts the light to a predetermined white point color.

24. The system as claimed in claim 22 wherein mounting the color adjuster further comprises mounting an optical film.

25. The system as claimed in claim 22 wherein mounting the color adjuster further comprises mounting a first optical film and a second optical film.

26. The system as claimed in claim 22 wherein mounting the LEDs further comprises:

mounting the LEDs on a removable light strip; and

mounting the removable light strip in the display assembly.

27. The system as claimed in claim 22 wherein presorting the LEDs into a plurality of groups further comprise presorting side firing LEDs into a plurality of groups.

28. The system as claimed in claim 22 further comprising:

selecting LEDs from a second group;

mounting the LEDs selected from the second group in the display assembly to illuminate the LCD display screen; and

mounting a second non-electronic color adjuster in the light path from the LEDs selected from the second group between the LEDs and the LCD display screen to shift the light color to the predetermined color.