Methods and apparatus for providing light to a display
First Claim
Patent Images
1. A backlight assembly for a monitor comprising:
- a modulator; and
a plurality of white light emitting diodes coupled to the modulator, the white light emitting diodes comprising blue light emitting diodes coated with phosphors.
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Abstract
A low power backlight assembly for a large form factor flat screen display is disclosed which includes a modulator and a number of white light emitting diodes. The diodes are sequentially driven to provide the backlight used by the display.
56 Citations
27 Claims
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1. A backlight assembly for a monitor comprising:
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a modulator; and
a plurality of white light emitting diodes coupled to the modulator, the white light emitting diodes comprising blue light emitting diodes coated with phosphors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. A display device comprising:
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a display screen;
a light source to provide light to the display screen and including a plurality of light emitting diodes; and
a drive circuit to illuminate a first subset of the light emitting diodes for a first time period and to illuminate a second subset of the light emitting diodes for a second time period.
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11. A display device comprising:
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a display screen;
a first bank of light emitting diodes to deliver light to the display screen;
a second bank of light emitting diodes to deliver light to the display screen; and
a drive circuit to illuminate the first bank for a first time period and the second bank for a second time period partially overlapping with the first time period. - View Dependent Claims (12)
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13. A display device comprising:
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a display screen;
a first bank of light emitting diodes to deliver light to the display screen;
a second bank of light emitting diodes to deliver light to the display screen, the second bank of light emitting diodes being physically interleaved with the first plurality of diodes to provide a substantially continuous illumination to the display screen; and
a drive circuit to illuminate the first bank for a first time period and the second bank for a second time period partially overlapping with the first time period. - View Dependent Claims (14, 15)
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16. A method of providing light to a display screen comprising:
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(a) illuminating a first bank of light emitting diodes for a first time period; and
(b) illuminating a second bank of light emitting diodes for a second time period partially overlapping with the first time period. - View Dependent Claims (17, 18)
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19. For use with a desktop computer, a flat panel display comprising:
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a display screen;
a first bank of light emitting diodes to deliver light to the display screen;
a second bank of light emitting diodes to deliver light to the display screen;
a drive circuit to illuminate the first bank for a first time period and the second bank for a second time period; and
a data cable to deliver data for display on the display screen and power to illuminate the first and second banks. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A computer comprising:
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a housing;
an input device;
an output device;
a display screen;
a processor coupled to the input device, the output device, and the display screen; and
a backlight assembly to provide light to the display screen, the backlight assembly comprising a plurality of light emitting diodes driven to generate the light. - View Dependent Claims (26, 27)
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Specification