Flexible display and method for measuring angle of the same

1. A flexible display, comprising:

a first sensor unit disposed in a first region of the flexible display and including different sensors that are operationally responsive to dissimilar stimulus;

a second sensor unit disposed in a second region of the flexible display adjacent to the first region and including different sensors that are operationally responsive to dissimilar stimulus; and

an angle-measuring unit measuring a folding angle between the first region and the second region in response to sensing signals outputted from both the first sensor unit and the second sensor unit, the sensing signals including respective azimuth angles outputted from the first sensor unit and the second sensor unit.

2. The flexible display as claimed in claim 1 , wherein the angle-measuring unit comprises:

a first angle estimator determining a first angle between the first region and the second region in response to first sensing signals outputted from a first pair of sensors respectively included in the first sensor unit and the second sensor unit, said first pair of sensors operationally responsive to a first stimulus;

a second angle estimator determining a second angle between the first region and the second region in response to second sensing signals outputted from a second pair of sensors respectively included in the first sensor unit and the second sensor unit, said second pair of sensors operationally responsive to a second stimulus; and

an averaging unit outputting an average value between the first angle and the second angle as the folding angle by averaging the first angle determined by the first angle estimator and the second angle determined by the second angle estimator.

3. The flexible display as claimed in claim 1 , wherein the different sensors comprise at least two sensors selected from the group consisting of a gyroscope sensor, an acceleration sensor, and a terrestrial magnetism sensor.

4. The flexible display as claimed in claim 1 , further comprising a third sensor unit disposed in a third region adjacent to the first region and including different sensors that are operationally responsive to dissimilar stimulus,

wherein the angle-measuring sensor calculates an angle between the first region and the third region in response to sensing signals outputted from the first sensor unit and the third sensor unit.

5. The flexible display as claimed in claim 1 , wherein, when each of the first sensor unit and the second sensor unit includes at least three different sensors, the angle-measuring unit measures the folding angle in response to sensing signals outputted from two of the at least three different sensors.

6. A method of measuring a folding angle of a flexible display, comprising:

determining a first angle between a first region of the flexible display and a second region of the flexible display in response to first sensing signals outputted from a first plurality of sensors which are respectively disposed in the first region and the second region adjacent to the first region;

determining a second angle between the first region and the second region in response to second sensing signals outputted from a second plurality of sensor which are respectively disposed in the first region and the second region; and

outputting an average value of the first angle and the second angle as the folding angle between the first region and the second region.

7. The method as claimed in claim 6 , wherein the first plurality of sensors is any one of a group of a gyroscope sensor, an acceleration sensor, and a terrestrial magnetism sensor, while the second plurality of sensors is any another one of a group of a gyroscope sensor, an acceleration sensor, and a terrestrial magnetism sensor.