A display device that includes a housing with at least one Printed Circuit Board (PCB) and a plurality of rollers disposed in the housing. The display device also includes a display unit which, in turn, includes a display panel and a module cover. The display device further includes a driving unit that is connected to the display panel and the module cover. The driving unit moves the display panel and the module cover between a first state and a second state. In the first state, the panel and module cover are wound around at least one of the plurality of rollers, and in the second state they are unwound from the at least one of the plurality of rollers and exposed by being drawn out from the housing.

A flexible printed circuit is described that includes a flexible supporting substrate having a first face and a second face. A conductive material is deposited by vacuum deposition on at least one of the first face or the second face of the flexible supporting substrate. A flexible conductive circuit is formed on the conductive material by electrical discharge machining. The flexible conductive circuit defines a plurality of electrical component placement circuits to which electrical components may be attached. The flexible printed circuit can be rolled or folded. The flexible printed circuit can also be made in sizes much larger than is currently possible with other competing technologies.

A rollable display device includes a rollable structure including a plurality of unit structures, the rollable structure being configured to be rolled and unrolled based on the unit structures, and a display panel structure attached to the rollable structure, wherein respective widths of the unit structures increase in a first direction from a first side of the rollable structure to an opposite second side of the rollable structure.

A rollable display device includes a rollable structure including a plurality of unit structures, the rollable structure being configured to be rolled and unrolled based on the unit structures, and a display panel structure attached to the rollable structure, wherein respective widths of the unit structures increase in a first direction from a first side of the rollable structure to an opposite second side of the rollable structure.

A rollable display is disclosed. In one aspect, the rollable display includes a flexible display panel, a protective film configured to be placed on the flexible display panel, and a first jig connected to a first end of the flexible display panel and a first end of the protective film. The flexible display panel and the protective film are configured to be rolled around the first jig. The rollable display also includes a second jig connected to a second end of the protective film. The protective film is configured to be rolled around the second jig. The rollable display further includes a first housing for the first jig. The first housing is configured to accommodate the flexible display panel and the protective film.

A flexible printed circuit board reel device, which includes a left housing, a right housing, a rotary sleeve, an upper spiral spring and a lower spiral spring. The left housing and the right housing of the reel device are caught on each other to form a housing, and the left housing and the right housing are firmly and closely fixed with each other, which can increase the connection area, whereby the left and right housings are not easily separated from each other, and the housing can have a strong structure. The upper spiral spring, the lower spiral spring, an upper central shaft and a lower central shaft of the reel device form a symmetrical and balanced double-spring structure; when a flexible printed circuit board is reeled or unreeled, the force generated by the springs is evenly distributed over the upper portion and the lower portion of the rotary sleeve.

A display device that includes a housing with at least one Printed Circuit Board (PCB) and a plurality of rollers disposed in the housing. The display device also includes a display unit which, in turn, includes a display panel and a module cover. The display device further includes a driving unit that is connected to the display panel and the module cover. The driving unit moves the display panel and the module cover between a first state and a second state. In the first state, the panel and module cover are wound around at least one of the plurality of rollers, and in the second state they are unwound from the at least one of the plurality of rollers and exposed by being drawn out from the housing.

A display device may include a support plate, a first display unit, a second display unit, a third display unit, a pad, and a circuit board. The first display unit overlaps the support plate. The second display unit is connected to the first display unit. A portion of the second display unit may move relative to the support plate. The third display unit is connected through the first display unit to the second display unit. A portion of the third display may move relative to the support plate. The pad includes a pad electrode that is electrically connected to the first display unit. The circuit board is electrically connected to the pad. A first section of the circuit board is bent relative to a second section of the circuit board and is oriented perpendicular or oblique with respect to the first display unit.

One embodiment of the present invention provides a highly reliable display device. In particular, a display device to which a signal or a power supply potential can be supplied stably is provided. Further, a bendable display device to which a signal or a power supply potential can be supplied stably is provided. The display device includes, over a flexible substrate, a display portion, a plurality of connection terminals to which a signal from an outside can be input, and a plurality of wirings. One of the plurality of wirings electrically connects one of the plurality of connection terminals to the display portion. The one of the plurality of wirings includes a first portion including a plurality of separate lines and a second portion in which the plurality of lines converge.

A sensor assembly has a substrate with a first surface and a second surface opposite the first surface, at least one analyte sensor positioned on at least one of the first surface and the second surface of the substrate, and at least one electrical contact positioned on the substrate in electrical communication with a corresponding one of the at least one analyte sensor. The substrate is configured to define a tube having an interior surface, and an exterior surface. At least a portion of the first surface of the substrate defines the interior surface of the tube, and the at least one analyte sensor is disposed on at least one of the interior surface and the exterior surface of the tube.