A new patent has been granted to Motorola covering the use of a mobile phone LCD screen as a solar cell.
The Display and Solar Cell Device patent would allow mobile phones and other devices to be fitted with a solar cell screen that would power the device and recharge an internal battery while it was left in the sun.
It is not clear whether Motorola would be using this as the sole method of powering a device or if it would be used to increase the battery life of conventional devices.
The Display and Solar Cell Device patent would allow mobile phones and other devices to be fitted with a solar cell screen that would power the device and recharge an internal battery while it was left in the sun.
It is not clear whether Motorola would be using this as the sole method of powering a device or if it would be used to increase the battery life of conventional devices.
Here’s a partial description of the solar cell LCD:
A device comprising: a solar cell; a reflective liquid crystal display having a backside and a front side and having one of selectively reflecting cholesteric and polymer dispersed liquid crystal such that at least some light passing from the front side and through the backside of the reflective liquid crystal display will illuminate a substantially uniform dark-colored light-receiving active surface of the solar cell, wherein the solar cell has a light-receiving inactive surface that has a different color than the substantially uniform dark-colored light-receiving active surface; and a mask having apertures that substantially conform topographically to the light-receiving active surface of the solar cell and mask surfaces that substantially conform to at least some of the light-receiving inactive surface and that has a color that substantially matches the substantially uniform dark-colored light-receiving active surface of the solar cell.
A device comprising: a solar cell; a reflective liquid crystal display having a backside and a front side and having one of selectively reflecting cholesteric and polymer dispersed liquid crystal such that at least some light passing from the front side and through the backside of the reflective liquid crystal display will illuminate a substantially uniform dark-colored light-receiving active surface of the solar cell, wherein the solar cell has a light-receiving inactive surface that has a different color than the substantially uniform dark-colored light-receiving active surface; and a mask having apertures that substantially conform topographically to the light-receiving active surface of the solar cell and mask surfaces that substantially conform to at least some of the light-receiving inactive surface and that has a color that substantially matches the substantially uniform dark-colored light-receiving active surface of the solar cell.
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