Electronic device having flexible display and method for operating display thereof

A method for operating an electronic device comprising a first housing, a second housing, a third housing, and a flexible display capable of moving into/out of the second housing and/or the third housing, the method comprising:

• displaying a first execution screen based on a first display fixed to the first housing, the first display having a display region exposed outwards;
• detecting a change in state of at least one display, while displaying the first execution screen, among a second display configured to be rolled from the second housing and capable of expanding the first display first partially, and a third display configured to be rolled to the third housing and capable of expanding the first display second partially;
• identifying at least one display, a change in state of which is detected, among the second display and the third display;
• performing control, based on identifying a change in state of the second display, such that the first execution screen displayed through the first display is maintained, and a second execution screen is displayed through the second display, or the first execution screen is changed so as to correspond to interworking between a first portion of the first display and the second display and then displayed, and a second execution screen is displayed through a second portion of the first display;
• and
• performing control, based on identifying a change in state of the third display, such that the first execution screen displayed through the first display is maintained, and a third execution screen is displayed through the third display, or the first execution screen is changed so as to correspond to interworking between a second portion of the first display and the third display and then displayed, and a second execution screen is displayed through a first portion of the first display.

One or more non-transitory computer-readable storage media storing computer-executable instructions that, when executed by at least one processor of an electronic device, cause the electronic device to perform operations comprising:

• displaying a first execution screen based on a first display fixed to a first housing, the first display having a display region exposed outwards;
• detecting a change in state of at least one display, while displaying the first execution screen, among a second display configured to be rolled from a second housing and capable of expanding the first display first partially, and a third display configured to be rolled to a third housing and capable of expanding the first display second partially;
• identifying at least one display, a change in state of which is detected, among the second display and the third display;
• performing control, based on identifying a change in state of the second display, such that the first execution screen displayed through the first display is maintained, and a second execution screen is displayed through the second display, or the first execution screen is changed so as to correspond to interworking between a first portion of the first display and the second display and then displayed, and a second execution screen is displayed through a second portion of the first display;
• and
• performing control, based on identifying a change in state of the third display, such that the first execution screen displayed through the first display is maintained, and a third execution screen is displayed through the third display, or the first execution screen is changed so as to correspond to interworking between a second portion of the first display and the third display and then displayed, and a second execution screen is displayed through a first portion of the first display.