SCANNING BACKLIGHT FOR FLAT-PANEL DISPLAY
First Claim
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1. A method of backlighting a display, the method comprising:
- turning on a light array of N light arrays in response to display data having been written to a corresponding horizontal row of N horizontal rows of the display, the turned-on light array configured for backlighting predominately the corresponding horizontal row of the display;
turning off the turned-on light array in response to display data having been written to another horizontal row of the N horizontal rows of the display; and
repeating the method in response to the turning off.
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Abstract
An illuminator for a flat-panel display comprises a tapered slab waveguide 1 co-extensive with the display, a light source 2-4 arranged to inject light into an edge of the waveguide so that it emerges over the face of the waveguide, and means for scanning the light injected into the wedge so that different areas of the panel are illuminated in turn. Preferably the light source is a set of rows of LEDs, each row injecting light at a different range of angles so that it emerges over different areas of the waveguide 1.
141 Citations
20 Claims
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1. A method of backlighting a display, the method comprising:
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turning on a light array of N light arrays in response to display data having been written to a corresponding horizontal row of N horizontal rows of the display, the turned-on light array configured for backlighting predominately the corresponding horizontal row of the display; turning off the turned-on light array in response to display data having been written to another horizontal row of the N horizontal rows of the display; and repeating the method in response to the turning off. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An illuminator system for a display, the illuminator system comprising:
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a controller configured for turning on a light array of N light arrays in response to display data having been written to a corresponding horizontal row of N horizontal rows of the display, the turned-on light array configured for backlighting predominately the corresponding horizontal row of the display; the controller further configured for turning off the turned-on light array in response to display data having been written to another horizontal row of the N horizontal rows of the display; and the controller further configured for repeating the turning on and then the turning off in response to the turning off. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification