Electronic device and method of controlling display thereof

1. A method of controlling a display of an electronic device, the method comprising:

arranging a first image and a second image on different layers of a vertical layer stack, the first image being arranged on an upper layer to the second image;

measuring a tilt of the electronic device;

determining which of the first image and the second image to display based on whether the measured tilt is within a predetermined tilt interval and the display is facing a user of the electronic device;

displaying the first image by controlling transparency of the first image based on the measured tilt, in response to determining that the measured tilt is within the predetermined tilt interval and the display is facing the user;

displaying the second image by controlling the transparency of the first image based on the measured tilt, in response to determining that the measured tilt is not within the predetermined tilt interval;

outputting additional information on an uppermost layer of the vertical layer stack; and

when the tilt of the electronic device is changing from the first interval to the second interval, displaying a screen including the first UI and the second UI, based on the change of the transparency of the first UI,

wherein each of the first image and the second image includes at least one of a pattern, a color, information, contents, and a User Interface (UI),

wherein the first image and the second image are different from each other,

wherein the first image includes a first UI and the second image includes a second UI, and

wherein controlling transparency of the first image comprises:

when the tilt of the electronic device is in a first interval, controlling transparency of the first UI to be a first value; and

when the tilt of the electronic device is in a second interval, controlling the transparency of the first UI to be a second value.

2. The method of claim 1 , wherein measuring the tilt of the electronic device comprises measuring the tilt based on at least one of a first axis and a second axis, which is orthogonal to the first axis.

3. The method of claim 1 , wherein controlling the transparency of the first image comprises:

when the tilt of the electronic device changes from a first tilt to a second tilt, increasing the transparency of the first image in accordance with the change; and

when the tilt of the electronic device changes from the second tilt to the first tilt, decreasing the transparency of the first image in accordance with the change.

4. The method of claim 1 , further comprising displaying predetermined information with at least one of the first image and second image.

5. The method of claim 1 , wherein the first image includes text and the second image includes a picture.

6. The method of claim 1 , further comprising:

receiving a first user input through the first UI and performing a first function corresponding to the first input based on the first UI, if the tilt of the electronic device is in the first interval; and

receiving a second user input through the second UI and performing a second function corresponding to the second input based on the second UI, if the tilt of the electronic device is in the second interval.

7. An electronic device comprising:

a display unit;

a sensor unit that measures a tilt of the electronic device; and

controller that:

arranges a first image and a second image on different layers of a vertical layer stack, the first image arranged on an upper layer to the second image,

determines which of the first image and the second image to display based on whether the measured tilt is within a predetermined tilt interval and the display unit is facing a user of the electronic device,

displays, through the display unit, the first image by controlling transparency of the first image based on the measured tilt, in response to determining that the measured tilt is within the predetermined tilt interval and the display is facing the user,

displays, through the display unit, the second image by controlling the transparency of the first image based on the measured tilt, in response to determining that the measured tilt is not within the predetermined tilt interval;

outputs additional information on an uppermost layer of the vertical layer stack; and

when the tilt of the electronic device is changing from the first interval to the second interval, the controller displays, through the display unit, a screen including the first UI and the second UI, based on the change of the transparency of the first UI,

wherein each of the first image and the second image includes at least one of a pattern, a color, information, contents, and a User Interface (UI),

wherein the first image and the second image are different from each other,

wherein the first image includes a first UI and the second image includes a second UI, and

wherein the controller controls transparency of the first UI to be a first value such that the first UI is displayed, when the tilt of the electronic device is in a first interval, and controls the transparency of the first UI to be a second value such that the second UI is displayed, when the tilt of the electronic device is in a second interval.

8. The electronic device of claim 7 , wherein the controller measures the tilt based on at least one of a first axis and a second axis, which is orthogonal to the first axis.

9. The electronic device of claim 7 , wherein the controller increases the transparency of the first image in accordance with a change of the tilt, when the tilt of the electronic device changes from a first tilt to a second tilt, and decreases the transparency of the first image in accordance with the change of the tilt, when the tilt of the electronic device changes from the second tilt to the first tilt.

10. The electronic device of claim 7 , wherein the controller arranges a layer of a third image between the layers of the first image and the second images, and displays at least one of the first image, the second image, and the third image by controlling transparency of the third image based on the measured tilt.

11. The electronic device of claim 7 , wherein the controller displays predetermined information with at least one of the first image and second image.

12. The electronic device of claim 7 , wherein the first image includes text and the second image includes a picture.

13. The electronic device of claim 7 , wherein, when the tilt of the electronic device is in the first interval and a first input is received, the controller performs a function corresponding to the first input based on the first UI, and

wherein, when the tilt of the electronic device is in the second interval and a second input is received, the controller performs a function corresponding to the second input based on the second UI.