Mirrored LCD display
First Claim
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1. A wireless telephone comprising:
- communication logic configured to send and receive signals from a base station over a wireless channel, the base station in communication with a telephone network;
a mirrored liquid crystal display comprising;
a liquid crystal module;
a half-mirror layer, which is partially reflective and partially transmissive, affixed to one surface of the liquid crystal module;
a backlight producing light directed at an opposite surface of the liquid crystal module, wherein the intensity of light produced by the backlight is matched to the reflective and transmissive characteristics of the half-mirror layer such that when the light output is at a minimum, the half-mirror layer is substantially reflective and the liquid crystal module is substantially invisible, and when the light output is at a maximum, the half-mirror layer is substantially transmissive and the liquid crystal module is substantially visible; and
input logic configured to receive input from the user to control the communication logic and to control the intensity of the light produced by the backlight.
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Abstract
A mirrored liquid crystal display (LCD) is provided. One embodiment, among others, comprises a liquid crystal display (LCD); and logic for controlling the LCD to selectively operate in one of two alternative states. The two states include a first state in which the LCD operates in a conventional manner to display visible data to a user, and a second state in which the LCD effectively functions as a mirror.
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Citations
20 Claims
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1. A wireless telephone comprising:
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communication logic configured to send and receive signals from a base station over a wireless channel, the base station in communication with a telephone network;
a mirrored liquid crystal display comprising;
a liquid crystal module;
a half-mirror layer, which is partially reflective and partially transmissive, affixed to one surface of the liquid crystal module;
a backlight producing light directed at an opposite surface of the liquid crystal module, wherein the intensity of light produced by the backlight is matched to the reflective and transmissive characteristics of the half-mirror layer such that when the light output is at a minimum, the half-mirror layer is substantially reflective and the liquid crystal module is substantially invisible, and when the light output is at a maximum, the half-mirror layer is substantially transmissive and the liquid crystal module is substantially visible; and
input logic configured to receive input from the user to control the communication logic and to control the intensity of the light produced by the backlight. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The apparatus of claim 10, wherein the means for partially reflecting and partially transmitting comprises:
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a reflective surface with reflectance value Rm; and
a transparent surface with reflectance value Rt, wherein the half-mirror layer has a light transmittance value T, and wherein T, Rm and Rt are chosen so that the ratio It;
Im is at least 5, wherein Im is the intensity of an image reflected off the half-mirror layer and It is the intensity of light exiting the LCD display. - View Dependent Claims (11, 12, 15, 16)
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- 13. The apparatus of claim 13, wherein the first and second electrodes are transparent.
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18. A telephone comprising:
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a liquid crystal display (LCD); and
logic for controlling the LCD to selectively function as a mirror. - View Dependent Claims (17, 19)
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20. A telephone comprising:
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a liquid crystal display (LCD); and
logic for controlling the LCD to selectively function as a mirror.
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Specification