Multi-mode backlight for electronic device
First Claim
Patent Images
1. An electronic device, comprising:
- a display housing including, an electronic display panel, and at least two light sources for backlighting the display panel, at least one of the light sources being activated independently of the other light source to selectively increase and decrease the illumination to the display panel; and
a circuit coupled to said at least two light sources, said circuit determining which of the at least two light sources is chosen wherein the combined life of the at least two light sources is increased.
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Accused Products
Abstract
An electronic device has a display housing which includes a display panel and at least two light sources used to backlight the display panel. The at least two light sources are activated independently of each other to selectively increase or decrease the illumination of the display panel. A circuit is coupled to the at least two light sources. The circuit determines which of the at least two light sources is chosen such that the combined life of the at least two light sources is increased.
81 Citations
22 Claims
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1. An electronic device, comprising:
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a display housing including, an electronic display panel, and at least two light sources for backlighting the display panel, at least one of the light sources being activated independently of the other light source to selectively increase and decrease the illumination to the display panel; and
a circuit coupled to said at least two light sources, said circuit determining which of the at least two light sources is chosen wherein the combined life of the at least two light sources is increased. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A display for an electronic device, comprising:
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an electronic display panel;
at least two light sources for backlighting the display panel, at least one of the light sources being activated independently of the other light source to selectively increase and decrease the illumination to the display panel; and
a circuit coupled to said at least two light sources, said circuit determining which of the at least two light sources is chosen wherein the combined life of the at least two light sources is increased. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for extending the life of an electronic display having at least two light sources, the method comprising the steps of:
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cumulatively measuring the amount of time each of said at least two light sources is activated;
waiting for a transition of the display illumination;
selecting the light source with the least cumulatively acquired time activated thereby creating a selected light source; and
activating the selected light source to illuminate the display. - View Dependent Claims (20)
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21. A method for extending the life of an electronic display having at least two light sources, the method comprising the steps of:
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cumulatively measuring the amount of current consumed by each of said at least two light sources when activated;
waiting for a transition of the display illumination;
selecting the light source with the least cumulatively consumed current thereby creating a selected light source; and
activating the selected light source to illuminate the display. - View Dependent Claims (22)
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Specification