Methods and devices for lighting displays
First Claim
Patent Images
1. A display device comprising:
- a transmissive display comprising a front surface and a back surface, the transmissive display configured to be illuminated through the back surface;
a reflective display comprising a front surface and a back surface, said reflective display configured to be illuminated through the front surface;
a light source disposed with respect to the back of the transmissive display to illuminate the transmissive display through the back surface; and
a light pipe disposed with respect to the light source to receive light therefrom, said light pipe configured to propagate said light such that said light provides front illumination of said reflective display.
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Abstract
Various devices and methods of lighting a display are disclosed. In one embodiment, for example, a display device includes a transmissive display configured to be illuminated through a back surface and a reflective display configured to be illuminated through a front surface. A light source is disposed with respect to the back of the transmissive display to illuminate the transmissive display through the back surface. A light pipe is disposed with respect to the light source to receive light from the light source and is configured to propagate the light such that this light provides front illumination of the reflective display.
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Citations
47 Claims
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1. A display device comprising:
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a transmissive display comprising a front surface and a back surface, the transmissive display configured to be illuminated through the back surface;
a reflective display comprising a front surface and a back surface, said reflective display configured to be illuminated through the front surface;
a light source disposed with respect to the back of the transmissive display to illuminate the transmissive display through the back surface; and
a light pipe disposed with respect to the light source to receive light therefrom, said light pipe configured to propagate said light such that said light provides front illumination of said reflective display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method of illuminating a reflective display and a transmissive display with a light source, the reflective and transmissive displays being positioned in a back-to-back configuration, the method comprising:
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disposing the light source with respect to a back portion of the transmissive display to illuminate the transmissive display through the back;
disposing a light pipe with respect to the light source to receive light therefrom; and
disposing the reflective display with respect to the light pipe such that light exiting the light pipe provides front illumination for the reflective display. - View Dependent Claims (37)
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38. A display device, comprising:
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a first reflective display comprising a viewable surface and a back surface;
a second reflective display comprising a viewable surface and a back surface, the back surface of the first display disposed substantially facing the back surface of the second display and positioned near the back surface of the second display;
a light source; and
light piping optically coupled to the light source and optically coupled to an edge or surface of both the first and second displays to transfer light emitted from the light source into a portion of the viewable surface of both the first and second displays illuminating the first and second displays. - View Dependent Claims (39, 40, 41)
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42. A display device comprising:
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first means for displaying an image, said first means for displaying comprising a front surface and a back surface, means for the illuminating said first means for displaying through the back surface;
second means for displaying an image comprising a front surface and a back surface; and
means for illuminating said second means for displaying through the front surface of said second means for displaying, wherein said means for illuminating said second means for displaying uses light from said means for illuminating said first means for displaying. - View Dependent Claims (43, 44, 45, 46)
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47. A method of illuminating a reflective display and a transmissive display with a light source, the reflective and transmissive displays being positioned in a back-to-back configuration, the method comprising:
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displaying an image on a transmissive display, said transmissive display comprising a front surface and a back surface, illuminating said transmissive display through the back surface using a light source;
displaying an image on a reflective display, comprising a front surface and a back surface; and
illuminating said reflective display through the front surface using the light source.
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Specification