SEGMENTED EDGE-LIT BACKLIGHT ASSEMBLY FOR A DISPLAY
First Claim
1. An edge-lit backlight assembly for backlighting a display, comprising:
- a light guide having a first segment and a second segment disposed within a common plane;
a first light source disposed along an edge of said first segment of said light guide such that light emitted from said first light source propagates through said first segment; and
a second light source disposed along an edge of said second segment of said light guide such that light emitted from said second light source propagates through said second segment,wherein said first segment of said light guide is at least partially optically isolated from said second segment such that light emitted from said first light source is at least partially blocked from propagating through said second segment.
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Accused Products
Abstract
An edge-lit backlight assembly is provided for backlighting a display. The backlight assembly may include: a light guide having a first segment and a second segment disposed within a common plane; a first light emitting diode disposed along an edge of the first segment of the light guide such that light emitted from the first light emitting diode propagates through the first segment; and a second light emitting diode disposed along an edge of the second segment of the light guide such that light emitted from the second light emitting diode propagates through the second segment. The first segment of the light guide is at least partially optically isolated from the second segment such that light emitted from the first light emitting diode is at least partially blocked from propagating through the second segment.
15 Citations
25 Claims
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1. An edge-lit backlight assembly for backlighting a display, comprising:
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a light guide having a first segment and a second segment disposed within a common plane; a first light source disposed along an edge of said first segment of said light guide such that light emitted from said first light source propagates through said first segment; and a second light source disposed along an edge of said second segment of said light guide such that light emitted from said second light source propagates through said second segment, wherein said first segment of said light guide is at least partially optically isolated from said second segment such that light emitted from said first light source is at least partially blocked from propagating through said second segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display, comprising:
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a display element having a display area from which information is displayed, a select portion of said display area for displaying select information; and an edge-lit backlight assembly for backlighting said display element, said edge-lit backlight assembly comprising; a light guide having a first segment and a second segment, where said first segment backlights said select portion of said display area and said second segment backlights a remaining portion of said display area; a first light emitting diode disposed along an edge of said first segment of said light guide such that light emitted from said first light emitting diode propagates through said first segment and backlights said select portion of said display area; and a plurality of second light emitting diodes disposed along an edge of said second segment of said light guide such that light emitted from said second light emitting diodes propagates through said second segment and backlights said remaining portion of said display area, wherein said first segment of said light guide is at least partially optically isolated from said second segment such that light emitted from said first light emitting diode is at least partially blocked from propagating through said second segment and thereby at least partially blocked from backlighting the remaining portion of said display area. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A display for a vehicle, comprising:
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a display element having a display area from which video images are displayed over the full display area, a select portion of said display area for displaying select information; and an edge-lit backlight assembly for backlighting said display element, said edge-lit backlight assembly comprising; a light guide having a first segment and a second segment, where said first segment backlights said select portion of said display area and said second segment backlights a remaining portion of said display area; at least one first light emitting diode disposed along an edge of said first segment of said light guide such that light emitted from said at least one first light emitting diode propagates through said first segment and backlights said select portion of said display area; and a plurality of second light emitting diodes disposed along an edge of said second segment of said light guide such that light emitted from said second light emitting diodes propagates through said second segment and backlights said remaining portion of said display area, wherein said first segment of said light guide is at least partially optically isolated from said second segment such that light emitted from said at least one first light emitting diode is at least partially blocked from propagating through said second segment and thereby at least partially blocked from backlighting the remaining portion of said display area, wherein, when video images are displayed over the full display area, said at least one first light emitting diode and said plurality of second light emitting diodes are energized to backlight all of said display area, and wherein, when the select information is displayed on said select portion of said display area, said at least one first light emitting diode is energized to backlight said select portion while said plurality of second light emitting diodes are de-energized such that the remaining portion is not backlit. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification