Display apparatus for individually controlling transparency and rendering state of each of a plurality of areas and display method thereof

A method for controlling of a display apparatus, the method comprising:

• identifying folding of at least part of a display included in the display apparatus;
• identifying a plurality of areas in the display based on a folding line of the folding of the display, the plurality of areas including an exposure state area, a non-exposure state area and a covering area;
• and
• individually controlling a transparency and a rendering state of each of the plurality of areas,
• wherein the exposure state area, the non-exposure state area and the covering area are different from each other,
• wherein the individually controlling comprises individually adjusting the transparency of the non-exposure state area according to the folding and the covering area which covers the non-exposure state area according to the folding among the plurality of areas, the exposure state area including a front surface and a rear surface opposite to the front surface, the non-exposure state area including a front surface and a rear surface opposite to the front surface of the non-exposure state area, and the covering area including an inner surface facing the front surface of the non-exposure state area and an outer surface opposite to the inner surface, and
• individually adjusting the rendering state of each of the plurality of areas based on a size of each of the plurality of areas,
• wherein the covering area is adjacent to the non-exposure state area according to the folding, and
• wherein the method further comprises:
• controlling a touch activation state for each of the front surface and the rear surface of the exposure state area, each of the front surface and the rear surface of the non-exposure state area and each of the inner surface and the outer surface of the covering area,
• changing the transparency of the non-exposure state area to an opaque state according to the folding, and
• changing each of the inner surface of the covering area covering the front surface of the non-exposure state area and the front surface of the non-exposure state area to a touch inactivation state according to the folding.

A display apparatus comprising:

• a flexible display that comprises a front display surface and a back display surface and is foldable to have a plurality of display areas according to a folding line of the folding of the display, the plurality of display areas including an exposure state area, a non-exposure state area and a covering area;
• a sensor;
• and
• a processor configured to:
• control the sensor to identify a folding state of each of the plurality of display areas and a position of a user in relation to each of the plurality of display areas, the folding state comprising an unfolded state, an exposed folded state, and an unexposed folded state,
• identify a size of each of the plurality of display areas, adjust a transparency level of each of the plurality of display areas based on the folding state and the position of the user, and adjust a rendering state of each of the plurality of display areas based on the identified size of each of the plurality of display areas,
• wherein the exposure state area, the non-exposure state area and the covering area are different from each other,
• wherein the processor is further configured to individually adjust the transparency level of the non-exposure state area according to the folding and the covering area which covers the non-exposure state area according to the folding among the plurality of display areas, the exposure state area including a front surface and a rear surface opposite to the front surface, the non-exposure state area including a front surface and a rear surface opposite to the front surface of the non-exposure state area, and the covering area including an inner surface facing the front surface of the non-exposure state area and an outer surface opposite to the inner surface,
• wherein the covering area is adjacent to the non-exposure state area according to the folding, and
• wherein the processor is configured to:
• control a touch activation state for each of the front surface and the rear surface of the exposure state area, each of the front surface and the rear surface of the non-exposure state area and each of the inner surface and the outer surface of the covering area,
• change the transparency level of the non-exposure state area to an opaque state according to the folding, and
• change each of the inner surface of the covering area covering the front surface of the non-exposure state area and the front surface of the non-exposure state area to a touch inactivation state according to the folding.