Electronic device for preventing unintended reception of user input by using illuminance sensor and display, and method for operating electronic device

1. An electronic device comprising:

a housing including a first surface and a second surface facing the first surface;

a display disposed on at least a part of the first surface;

a proximity sensor disposed between the display and the second surface;

an illuminance sensor; and

a processor connected to the display and the illuminance sensor operatively,

wherein the processor is configured to:

activate the display and the illuminance sensor in response to an occurrence of an event,

measure an illumination of an area in which the electronic device is disposed using the illuminance sensor,

identify characteristics of an input generated on the display by an external object, the characteristics of the input generated on the display comprising a size of a contact area between the external object and the display and a number of contact areas between the external object and the display, and

determine whether to inactivate a reception function of a touch input on at least a partial area of the display based at least in part on the measured illumination, the size of a contact area between the external object and the display, and the number of contact areas between the external object and the display, without the use of the proximity sensor.

2. The electronic device of claim 1 , wherein the processor is further configured to control the display to inactivate the reception function of the touch input on the display in response to identifying that the measured illumination is equal to or lower than a predetermined illumination and identifying that the size of the contact area between the external object and the display is equal to or larger than a predetermined area.

3. The electronic device of claim 1 , wherein the processor is further configured to control the display to inactivate the reception function of the touch input on the display in response to identifying that the measured illumination is equal to or lower than a predetermined illumination and identifying that the number of contact areas between the external object and the display is equal to or larger than a predetermined number.

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

identify whether the input by the external object is received within a predetermined time, and

control the display to maintain an activation state of the reception function of the touch input on the display in response to identifying that the input by the external object is received after the predetermined time.

5. The electronic device of claim 1 , wherein the processor is further configured to display, on the display, an indicator indicating that the reception function of the touch input on the display is inactivated in response to inactivating of the reception function of the touch input on the display.

6. The electronic device of claim 5 , wherein the indicator comprises an area for activating the reception function of the touch input on the display.

7. The electronic device of claim 6 , wherein the processor is further configured to maintain the inactivation of the reception function of the touch input on a remaining area except for the area for activating the reception function of the touch input on the display included in the indicator while the indicator is displayed.

8. The electronic device of claim 1 , wherein the processor is further configured to reactivate the reception function of the touch input on the display in response to identifying that the measured illumination is equal to or higher than a predetermined illumination while the reception function of the touch input on the display is inactive.

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

perform adjustments of the measured illumination based on the illumination of light generated due to the activation of the display, and

determine whether to activate the reception function of the touch input on the display based on a result of comparing the adjusted illumination with a predetermined illumination.

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

receive a user input for an area for activating the reception function of the touch input on the display, and

determine whether to activate the reception function of the touch input on the display based on a result of comparing a pressure corresponding to the user input with a predetermined value.

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

receive information related to a fingerprint of a user of the electronic device while inactivating the reception function of the touch input on the display, and

determine whether to activate the reception function of the touch input on the display based on a result of authenticating the information related to the fingerprint.

12. A method for operating an electronic device, the method comprising:

activating a display disposed on at least a part of a first surface of a housing and an illuminance sensor disposed between the display and a second surface in response to an occurrence of an event;

measuring an illumination of an area in which the electronic device is disposed using the illuminance sensor;

identifying characteristics of an input generated on the display by an external object, the characteristics of the input generated on the display comprise a size of a contact area between the external object and the display and a number of contact areas between the external object and the display; and

determining whether to inactivate a reception function of a touch input on at least a partial area of the display based at least in part on the measured illumination, the size of a contact area between the external object and the display, and the number of contact areas between the external object and the display, without the use of a proximity sensor.

13. The method of claim 12 , wherein the determining of whether to inactivate the reception function of the touch input comprises:

controlling the display to inactivate the reception function of the touch input on the display in response to identifying that the measured illumination is equal to or lower than a predetermined illumination; and

identifying that the size of the contact area between the external object and the display is equal to or larger than a predetermined area.

14. The method of claim 12 , wherein the determining of whether to inactivate the reception function of the touch input comprises;

controlling the display to inactivate the reception function of the touch input on the display in response to identifying that the measured illumination is equal to or lower than a predetermined illumination; and

identifying that the number of contact areas between the external object and the display is equal to or larger than a predetermined number.

15. The method of claim 12 , wherein the determining of whether to inactivate the reception function of the touch input comprises:

identifying whether the input by the external object is received within a predetermined time; and

controlling the display to maintain activation of the reception function of the touch input on the display in response to identifying that the input by the external object is received after the predetermined time.