Reducing energy consumption of a display

1. A computer program product for reducing energy consumption by a display of an electronic device, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a processor to cause a computer to perform a method comprising:

enabling, by a computer, a first illumination area of a display, the display comprising a first illumination control chip controlling a first set of light emitting devices in at least a portion of the first illumination area, and a second illumination control chip controlling a second set of light emitting devices in at least a portion of the second illumination area;

receiving, by a computer, an input to adjust a second illumination area of the display, wherein adjusting comprises performing one or both of the following:

disabling, by a computer, a portion of the first illumination area not included in the second illumination area; and

enabling, by a computer, a portion of the second illumination area not included in the first illumination area.

2. The computer program product of claim 1 , further comprising displaying an image on one or more of:

the first illumination area on the display; and

the second illumination area on the display.

3. The computer program product of claim 1 , wherein the display comprises:

a first set of one or more light emitting diodes in the first illumination area; and

a second set of one or more light emitting diodes in the second illumination area.

4. The computer program product of claim 1 , wherein receiving the input to adjust the first illumination area comprises:

receiving an input via a user input indicating a size of the second illumination area on the display.

5. The computer program product of claim 1 , wherein receiving the input to adjust the first illumination area comprises:

receiving an input via a user input indicating a location of the second illumination area on the display.

6. The computer program product of claim 1 , wherein receiving the input to adjust the first illumination area comprises:

receiving an input from a display adjustment application when energy storage drops below a threshold.

7. An electronic device, comprising:

a display configured to display a first illumination area and a second illumination area the display comprising a first illumination control chip controlling a first set of light emitting devices in at least a portion of the first illumination area, and a second illumination control chip controlling a second set of light emitting devices in at least a portion of the second illumination area;

one or more computer processors;

one or more computer-readable storage media;

program instructions stored on a computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising:

instructions to enable the first illumination area of the display;

instructions to receive an input to adjust the second illumination area of the display, wherein adjusting comprises performing one or both of the following:

disabling a portion of the first illumination area not included in the second illumination area; and

enabling a portion of the second illumination area not included in the first illumination area.

8. The electronic device of claim 7 , wherein the instructions to receive the input to adjust the first illumination area comprises one or more of:

instructions to receive an input from a display adjustment application when energy storage drops below a threshold; and

instructions to receive a user input selecting the second illumination area on the display.

9. The electronic device of claim 7 , wherein the program instructions comprise instructions to scale an image to fit the second illumination area, wherein prior to the scaling, the image is sized to fit the first illumination area.

10. An electronic display device, comprising:

a display element, wherein the display element comprises:

a first set of a plurality of light emitting devices configured to illuminate a first light guide plate; and a second set of a plurality of light emitting devices configured to illuminate a second light guide plate;

a plurality of light emitting devices configured to illuminate at least a portion of the display element, wherein the plurality of light emitting devices are controlled by one or more illumination control chips;

one or more computer processors;

one or more computer-readable storage media;

program instructions stored on the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising instructions to: activate a first set of the plurality of light emitting devices, by at least one illumination control chip, to display an image on a first illumination area of the display element;

receive an input to adjust a second illumination area of the display, wherein adjusting comprises performing one or both of the following: disabling, by at least one illumination control chip, light emitting devices in the first set within the first illumination area; and

enabling, by at least one illumination control chip, light emitting devices within the second illumination area.

11. The device of claim 10 , wherein the plurality of light emitting devices comprise one or more of:

light emitting diodes; and

fluorescent lamps.

12. The device of claim 10 , wherein the display element comprises:

one or more light guide plates in the first illumination area; and

one or more light guide plates in the second illumination area.

13. The device of claim 10 , wherein the plurality of light emitting devices is an array of light emitting diodes, wherein each light emitting diode represents a pixel.