The U.S. Patent and Trademark Office published two granted patents for Samsung this week that revealed different aspects of a possible future scrollable display based device that could end up offering users the ability to carry a tablet in their pocket. With the display tightly rolled up inside a compact device, it could easily fit in a user's front pocket or a jacket pocket. When needed, the user could grab one end of the display handle and scroll out the display as needed or set. It could also be thought of as a mobile TV in your pocket.
Samsung's first granted patent is titled Rollable display device with separate rollers for display and display window." It relates to a rollable display device, and more particularly, to a rollable display device with improved reliability owing to alleviation of stress.
Samsung further notes in their granted patent that "A flexible display device is being developed in accordance with market demands. The flexible display device includes a curved display device fixed in a state having a specific curvature, a foldable display device which may be bent at more than a specific radius of curvature or may be folded around a folding axis, and a rollable display device which may be rolled up at a specific radius of curvature.
A lot of research has been carried out for the rollable display device among the aforementioned, because the rollable display device has a feature of providing excellent portability compared with a display area.
In respect to the display, Samsung notes that a rollable display device includes a display module including a display panel configured to display an image, a window member disposed on the display module to protect the display module, a first rotary member on which the display module is configured to be rolled up and a second rotary member spaced from the first rotary member and on which the window member is configured to be rolled up.
They further note that the thin film encapsulation layer TFE encapsulates the light emitting device layer of the OLED display panel (DP-OLED). The thin film encapsulation layer TFE includes a plurality of inorganic thin films. The inorganic thin films protect the light emitting device layer DP-OLED from moisture/oxygen, and the organic thin film protects the light emitting device layer DP-OLED from foreign materials, such as dusts.
In Samsung's second granted patent this week simply titled "Rollable display device," they note that it generally relates to a rollable display device, and more particularly, to a structure of a roller assembly on which a flexible display panel is wound.
Samsung notes that they've made in an effort to provide a rollable display device for preventing defects such as peeling and cracks from being generated at the end of the flexible display panel by minimizing relative pushing between films by rolling of the flexible display panel.
Samsung's patent FIG. 7 above is a perspective view illustrating an extended mode of the rollable display device; FIG. 8 is a front view of the rollable display device illustrated in FIG. 7; FIG. 10 is a perspective view illustrating a received mode of a rollable display device.
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