Patent ID: 9019313
Filing Date: 2015-04-28
Classification: G06F

Abstract:
1. A display device comprising: a rollable display comprising a flexible display panel and a flexible touch panel positioned over a display surface of the flexible display panel, the rollable display further comprising a back surface facing away from the display surface; a housing configured to enclose the rollable display while allowing the rollable display to move relative to the housing such that a portion of the rollable display is drawn out of the housing and retracted into the housing; a marker provided on the back surface of the rollable display and configured to contact the flexible touch panel as the rollable display is rolled such that the display device recognizes the marker's contact on the flexible touch panel and determines how much the rollable display is drawn out of the housing based on a location of the marker's contact on the flexible touch panel; and at least one processor configured to adjust the size of an image displayed on the flexible display panel based on the determination of how much the rollable display is drawn out of the housing, wherein the marker is elongated along an edge of the rollable display and extends throughout a length of the flexible display along the edge.