Electronic device and method for acquiring fingerprint information

1. An electronic device comprising:

a touch sensor;

a fingerprint sensor;

a display including a display region having a fingerprint sensing region; and

a processor,

wherein the processor is configured to:

detect a touch input for the fingerprint sensing region using the touch sensor;

acquire touch information including a size of the touch input, corresponding to the touch input, on the display;

determine a graphic object for guiding acquisition of a user's fingerprint corresponding to the touch input through the fingerprint sensing region, based at least on the acquired touch information including the size of the touch input; and

display the graphic object through the fingerprint sensing region of the display or proximity thereof.

2. The electronic device of claim 1 , wherein the processor is further configured to:

acquire orientation information of the touch input, as the touch information; and

determine an orientation of the graphic object, based on the acquired orientation information.

3. The electronic device of claim 1 , wherein the processor is further configured to:

determine, as at least part of the touch information, a first region overlapped with the fingerprint sensing region and a second region not overlapped with the fingerprint sensing region in a region touched by the touch input; and

determine at least one of a position, shape, or size of the graphic object, based at least on at least one of the determined first or second region.

4. The electronic device of claim 3 , wherein the processor is further configured to:

determine whether the first region satisfies a specified condition, based at least on at least one of a size, position, or shape of the first region; and

provide a visual feedback for a touch movement through the display when the first region fails to satisfy the specified condition.

5. The electronic device of claim 4 , wherein the processor is further configured to determine that the first region satisfies the specified condition when the size of the first region is larger than or equal to a specified size capable of fingerprint recognition with respect to the fingerprint sensing region.

6. The electronic device of claim 1 , wherein the processor is further configured to:

determine a region overlapped with the fingerprint sensing region in a region touched by the touch input, based at least on the touch information; and

change at least one of a color or brightness of the overlapped region.

7. The electronic device of claim 1 , wherein the processor is further configured to activate the fingerprint sensor when the touch input for the fingerprint sensing region is detected at the touch sensor.

8. The electronic device of claim 1 , wherein the processor is further configured to:

determine at least one of a variation in area of the touch input or a pressure of the touch input, based at least on the touch information; and

provide a visual feedback through the display when the at least one of the variation in area of the touch input or the pressure of the touch input exceeds a predetermined range.

9. The electronic device of claim 1 , wherein the fingerprint sensor is formed at a portion of a back side of the touch sensor.

10. The electronic device of claim 9 , wherein the processor is further configured to:

identify a position of a hovering touch; and

provide a feedback when the position of the hovering touch is not contained in the fingerprint sensing region.

11. The electronic device of claim 1 , wherein the graphic object comprises corrective text when there is a failing in the detecting of the touch input.

12. A method for acquiring a fingerprint at an electronic device having a touch sensor, a fingerprint sensor, a display including a display region having a fingerprint sensing region, and a processor, the method comprising:

detecting a touch input for the fingerprint sensing region by using the touch sensor;

acquiring touch information including a size of the touch input, corresponding to the touch input, on the display;

determining a graphic object for guiding acquisition of a user's fingerprint corresponding to the touch input through the fingerprint sensing region, based at least on the acquired touch information including the size of the touch input; and

displaying the graphic object through the fingerprint sensing region of the display or proximity thereof.

13. The method of claim 12 ,

wherein the acquiring of the touch information includes acquiring orientation information of the touch input, as the touch information, and

wherein the determining of the graphic object includes determining an orientation of the graphic object, based on the acquired orientation information.

14. The method of claim 12 , further comprising:

determining, as at least part of the touch information, a first region overlapped with the fingerprint sensing region and a second region not overlapped with the fingerprint sensing region in a region touched by the touch input; and

determining at least one of a position, shape, or size of the graphic object, based at least on at least one of the determined first or second region.

15. The method of claim 14 , further comprising:

determining whether the first region satisfies a specified condition, at least based on at least one of a size, position, or shape of the first region; and

providing a visual feedback for a touch movement through the display when the first region fails to satisfy the specified condition.

16. The method of claim 15 , wherein the determining of whether the first region satisfies a specified condition includes determining that the first region satisfies the specified condition when the size of the first region is larger than or equal to a specified size capable of fingerprint recognition with respect to the fingerprint sensing region.

17. The method of claim 12 , further comprising:

determining a region overlapped with the fingerprint sensing region in a region touched by the touch input, based at least on the touch information; and

changing at least one of a color or brightness of the overlapped region.

18. The method of claim 12 , further comprising:

activating the fingerprint sensor when the touch input for the fingerprint sensing region is detected at the touch sensor.

19. The method of claim 12 , further comprising:

identifying a position of a hovering touch; and

providing a feedback when the position of the hovering touch is not contained in the fingerprint sensing region.

20. The method of claim 12 , wherein the graphic object comprises corrective text when there is a failing in the detecting of the touch input.