An electronic display includes electrically conductive layers. An active layer is disposed between adjacent electrically conductive layers. The active layer includes cholesteric liquid crystal material. At least one transparent front substrate is disposed adjacent one of the electrically conductive layers near a front of the display. A semitransparent back layer absorbs light that passes through the active layer, reflects grey light or light of a color and is light transmitting. Electronic circuitry applies a voltage to the conductive layers that enables at least one of erasing or writing of the active layer.

A reusable envelope has one or more spaces thereon where address, return labels and/or postage can be removably placed or permanently affixed such as for finite number of shipments using a permanently affixed postage area, for example. The reusable envelope also includes a resealable closure allowing the interior of the envelope to be closed and reopened multiple times for multiple uses (shipments, receiving) or optionally to use a finite number of times by exposing the permanent adhesive to the flat and mating surface depending on user preference.

A reusable envelope has one or more spaces thereon where address, return labels and/or postage can be removably placed or permanently affixed such as for finite number of shipments using a permanently affixed postage area, for example. The reusable envelope also includes a resealable closure allowing the interior of the envelope to be closed and reopened multiple times for multiple uses (shipments, receiving) or optionally to use a finite number of times by exposing the permanent adhesive to the flat and mating surface depending on user preference.

A planar display communication board includes a frame having a plurality of sides, at least one of the plurality of sides includes a cover member hingedly connected to a functional member, the cover member having a raised position and a closed position, and the functional member including a slot and a shelf. A substrate base sheet is held within the slot of the functional member and an erasable sheet is positioned directly over a flexible media sheet and supported by the shelf. When the cover member is in the raised position, the erasable sheet and the flexible media sheet abut for alignment against shelf post extension; and when the cover member is in the closed position, the cover member compresses the erasable sheet and the flexible media sheet against the substrate base sheet away from at least one edge of the erasable sheet and the flexible media sheet.

A planar display communication board includes a frame having a plurality of sides, at least one of the plurality of sides includes a cover member hingedly connected to a functional member, the cover member having a raised position and a closed position, and the functional member including a slot and a shelf. A substrate base sheet is held within the slot of the functional member and an erasable sheet is positioned directly over a flexible media sheet and supported by the shelf. When the cover member is in the raised position, the erasable sheet and the flexible media sheet abut for alignment against shelf post extension; and when the cover member is in the closed position, the cover member compresses the erasable sheet and the flexible media sheet against the substrate base sheet away from at least one edge of the erasable sheet and the flexible media sheet.

A series of devices that allow for embedding of an image as a background while also affording the user the ability to write and print on the surface, with erasable capabilities, thus providing a multifunctional product for use in numerous industries. The devices are manufactured from predominately corrugated plastic. In one embodiment a one piece, removably attachable, cabinet system and graphic display system. In an additional embodiment, a writable board, or peg board comprising a front panel and a rear panel wherein the panels are interconnected by parallel rows, or corrugations, these panels include a writable and erasable surface. The present invention relates to assemblies of corrugated systems to better serve personal, business, and educational needs.

A series of devices that allow for embedding of an image as a background while also affording the user the ability to write and print on the surface, with erasable capabilities, thus providing a multifunctional product for use in numerous industries. The devices are manufactured from predominately corrugated plastic. In one embodiment a one piece, removably attachable, cabinet system and graphic display system. In an additional embodiment, a writable board, or peg board comprising a front panel and a rear panel wherein the panels are interconnected by parallel rows, or corrugations, these panels include a writable and erasable surface. The present invention relates to assemblies of corrugated systems to better serve personal, business, and educational needs.

A cuboid teaching tool that provides a display surface along each of its lateral faces, thereby providing a method of teaching children vital contact information in bite-size chunks. Each display surface can provide a portion of the contact information on each of the display surfaces. Each display surface includes an erasable writing surface. Each display surface is slidable along a pair of receiving slots recessed within the respective lateral face. The display surface can move along the receiving slots between a closed condition and an opened condition that provides access to an internal storage compartment defined by the cuboid.

A cuboid teaching tool that provides a display surface along each of its lateral faces, thereby providing a method of teaching children vital contact information in bite-size chunks. Each display surface can provide a portion of the contact information on each of the display surfaces. Each display surface includes an erasable writing surface. Each display surface is slidable along a pair of receiving slots recessed within the respective lateral face. The display surface can move along the receiving slots between a closed condition and an opened condition that provides access to an internal storage compartment defined by the cuboid.

The present invention provides a planar electroluminescence (EL) device comprising a substrate layer, an electrode layer, a light emitting layer, and a modulating layer, wherein the electrode layer comprises a plurality of electrodes arranged on a same level over the substrate layer, and there is no contact between adjacent electrodes. In one embodiment, the device further comprises a hole injection layer (HIL), a hole transport layer (HTL), an electron injection layer (EIL) and an electrode transport layer (ETL). In one embodiment, the light emitting layer comprises organic light emitting polymers or organic light emitting molecules. The device of the present invention would emit light when liquid, polar component, or conductive solution is written directly on the light emitting layer. In one embodiment, the device can emit light for prolonged period when the light emitting layer is coated or deposited with conductive material.