Lg Display Co., Ltd.

Samsung Sds Co., Ltd.

JiHun Song

Hoiyong Kwon

MinSeok Kim

UnJung Kim

Minseok Kim

GeunChang Park

ChounSung Kang

Moonsun Lee

Mi-Na Shin

YounYeol Yu

Unjung Kim

A system for partitioning a keyspace includes: a system for partitioning a keyspace, includes: a server configured to transmit a partition setting item based on a keyspace creation request; and a database configured to receive the partition setting item and configured to create a first partition for the keyspace based on the received partition setting item, wherein the partition setting item includes a replication factor and at least one of a size of a second partition for storing data or a storage period of the data.

System, method and computer readable storage medium for partitioning keyspace

A display device can include a display panel, a cover supporting a rear surface of the display panel and including a plurality of openings in the cover, a roller configured to wind and unwind the display panel and the cover, and an adhesive unit bonding the display panel with the cover. The adhesive unit includes a first adhesive member, a base layer disposed on the first adhesive member and having a plurality of patterns, and a second adhesive member disposed on the base layer.

Rollable display device having an adhesive unit with reduced modulus

The display device includes a display panel including an active area and a non-active area; and a polarization plate on the display panel, the polarization plate including a polarization layer. The polarization layer includes a first pattern corresponding to the active area and a second pattern corresponding to the non-active area, and the second pattern is spaced apart from the first pattern. Thus, it is possible to delay moisture absorption of a polarization layer.

Display device

A display device according to an exemplary embodiment of the present disclosure can include a back cover, a display panel disposed on the back cover, a polarizing plate disposed on the display panel, a barrier film disposed on the polarizing plate, and a side film which has one end disposed between the back cover and the display panel and another end disposed between the polarizing plate and the barrier film to enclose side surfaces of the display panel and the polarizing plate. Therefore, the moisture permeation into the polarization layer is delayed, which in turn improves the reliability of the display device.

A display device includes a display panel; a back cover supporting the display panel on a rear surface of the display panel; a roller disposed on a rear surface of the back cover, wherein the display panel and the back cover are wound around or unwound from the roller; a flexible film electrically connected to a pad area of the display panel; and a sealing layer disposed to cover an end of the flexible film. At least some of elements of the display panel including a substrate may be extended beyond the sealing layer. Accordingly, it is possible to prevent cracks in the display panel due to the pressing by the cover plate and the overflow of the sealant, thereby solving the issues of driving failure and reliability of the display panel.

Display device including back cover disposed roller

A display device may include a display panel, a first back cover disposed on a rear surface of the display panel, at least one flexible film which is electrically connected to one end of the display panel and is bent toward a rear surface of the first back cover or a front surface of the display panel, and a printed circuit board which is electrically connected to the at least one flexible film and disposed on the rear surface of the first back cover or the at least one flexible film. The printed circuit board overlaps one end of the display panel. Accordingly, one end of the display panel in which the pad area which is vulnerable to the stress is disposed and the printed circuit board are maintained to be flat, to minimize the damage of the display device.

A display device includes a display panel including an active area in which a plurality of pixels is defined and a pad area in which pads for applying signals to the plurality of pixels are placed; a back cover placed to overlap the display panel; and a roller configured to wind or unwind the back cover and the display panel and including a flat portion and a curved portion, wherein the pad area is placed to be inclined toward the flat portion.

A display device according to an exemplary embodiment of the present disclosure includes a display panel, a back cover which supports the display panel on a rear surface of the display panel, a plurality of flexible films which is electrically connected to one end of the display panel and is disposed on one surface of the back cover, a printed circuit board which is electrically connected to the plurality of flexible films and disposed on the one surface of the back cover, and a roller to which the display panel and the back cover are wound or unwound, and the roller includes a flat portion and a first curved portion and a second curved portion having different radii of curvature. Accordingly, the damage of the plurality of flexible films and the printed circuit board may be reduced.

A flexible, rollable display system includes a display and one or more cover components coupled thereto. The cover components include openings that, when the display is wound around a roller, reduce induced stresses and the likelihood of the display cracking. The roller may include a flat portion to accommodate a printed circuit board or other electronic components less flexible than the display. The cover component(s) may be formed of heat radiating material(s) to improve performance of the system.

A display device includes a display panel in which a plurality of pixels is defined. The display device further includes a back cover configured to be rolled together with the display panel. The display device further includes a roller winding or unwinding the back cover and the display panel, and including a flat surface and a curved surface. The display device further includes a buffer member covering at least a part of the back cover fixed to the roller, and having a width smaller than a width of the display panel. Therefore, the display panel is wound around the roller with a gentle slope, and non-display areas on both side portions of the display panel are wound around a roller with a space by the buffer member. Accordingly, a stress applied to the display panel and a crack may be reduced to improve reliability of the display device.

A display device includes a display panel, a first back cover which supports the display panel on a rear surface of the display panel; at least one flexible film which is electrically connected to a lower end of a rear surface of the display panel and is disposed on a rear surface of the first back cover; a printed circuit board which is electrically connected to the flexible film and disposed on the rear surface of the first back cover; a cover unit which accommodates the flexible films and the printed circuit board on the rear surface of the first back cover; and a roller around which the display panel and the first back cover are wound or unwound. Accordingly, a pad crack caused by a tension of the plurality of flexible films may be improved.

The present invention discloses a display device. The display device includes a display panel in which a plurality of pixels is defined; a back cover which overlaps the display panel; a roller which winds or unwinds the back cover and the display panel and includes a flat portion and a curved portion; and a fixing member which is configured to fix the back cover to the roller and on the flat portion and a part of the curved portion.

A display device includes a display panel; a back cover supporting the display panel on a rear surface of the display panel; one or more flexible films electrically connected to one end of the display panel and on a surface of the back cover; a film cover covering the flexible films and the end of the display panel; a printed circuit board electrically connected to the flexible films and on the surface of the back cover; and a roller having a first flat portion, a second flat portion, and a curved portion. The display panel and the back cover are wound around or unwound from the roller. The end of the display panel is in line with the first flat portion while the printed circuit board is in line with the second flat portion when the display panel and the back cover are fully wound around the roller.

A chip-on film and a display device including the same are disclosed. The chip-on film includes a first base film, a second base film positioned on the first base film, a film pad portion positioned on at least one side of the second base film and exposed to the outside of the first base film, and a coating layer positioned on one surface of the first base film.

Chip-on film and display device including the same

Disclosed is a display apparatus for protecting a side surface of a substrate from the outside. The display apparatus includes a base substrate including a stepped portion, a buffer layer provided on the base substrate, a pixel array layer provided on the buffer layer, an encapsulation substrate provided on the pixel array layer, and a cover layer covering a side surface of the encapsulation substrate. The buffer layer covers the stepped portion of the base substrate.

Growing community of inventors

Seoul, South Korea

JiHun Song