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US 7,744,262 B2Granted
Backlight module with nonlinearly arranged light emitting diodes and liquid crystal display with same
AssigneeInnolux Display Corp.
InventorsLi-Chun Chang, Chun-Yun Pan, Wei-Hao Hung
Life of this patent
Estimating the term…
Abstract
An exemplary backlight module includes a light guide plate, and a light source positioned for illuminating the light guide plate. The light source includes a plurality of LED units, and each LED unit includes a red LED, two green LEDs, and a blue LED. Each red, green, and blue LED has a center. In each LED unit, the centers of the red LED and the blue LED are at two opposite sides respectively of an imaginary line defined between the centers of the green LEDs.
Claims20
A backlight module comprising:
- a light guide plate;
- and
- a light source positioned for illuminating the light guide plate, the light source comprising a plurality of light emitting diode (LED) units, each LED unit comprising a red LED, two green LEDs, and a blue LED, each red, green, and blue LED having a center, and each LED defining an imaginary long axis extending along a middle of a length thereof, and an imaginary short axis extending perpendicular to the long axis and being located halfway along the long axis;
- wherein in each LED unit, the centers of the red LED and the blue LED are at two opposite sides respectively of an imaginary line defined between the centers of the green LEDs, and an arrangement of the red LED, the green LEDs, and the blue LED forms a generally cross-shaped configuration.
1 more element
A liquid crystal display comprising:
- a liquid crystal panel;
- and
- a backlight module configured for illuminating the liquid crystal panel, the backlight module comprising:
- a light guide plate;
- and
- a light source positioned for illuminating the light guide plate, the light source comprising a plurality of light emitting diode (LED) units, each LED unit comprising a red LED, two green LEDs, and a blue LED, and each LED defining an imaginary long axis extending along a middle of a length thereof, and an imaginary short axis extending perpendicular to the long axis and being located halfway along the long axis;
- wherein in each LED unit, the two green LEDs comprise a pair of the imaginary long axes and a pair of the imaginary short axes, and one pair of same axes selected from the pair of long axes and the pair of short axes is substantially collinearly oriented along a common axis extending along a first direction, and the red LED and the blue LED are at two opposite sides of the common axis of the green LEDs.
4 more elements
A backlight module comprising:
- a light guide plate;
- and
- a light source positioned for illuminating the light guide plate, the light source comprising a plurality of light emitting diode (LED) units, each LED unit comprising a red LED, two green LEDs, and a blue LED, and each LED defining an imaginary long axis extending along a middle of a length thereof, and an imaginary short axis extending perpendicular to the long axis and being located halfway along the long axis;
- wherein in each LED unit, the two green LEDs comprise a pair of the imaginary long axes and a pair of the imaginary short axes, and one pair of same axes selected from the pair of long axes and the pair of short axes is substantially collinearly oriented along a common axis extending along a first direction, and the red LED and the blue LED are at two opposite sides of the common axis of the green LEDs.
1 more element
Dependencies are inferred from the claim text.