Abstract: An electronic device including a first light emitting unit, a second light emitting unit, a first optical layer and a second optical layer is disclosed. The first light emitting unit emits a first light. The second light emitting unit emits a second light. At least one of the first light and the second light passes through the first optical layer. The second optical layer is overlapped with the first optical layer. The second optical layer is configured to scatter the first light emitted from the first light emitting unit. When the first light emitting unit emits the first light, the second light emitting unit selectively emits the second light.

Abstract: An electronic device has a narrow viewing angle state and a wide viewing angle state, and includes a panel and a light source providing a light passing through the panel. In the narrow viewing angle state, the light has a first relative light intensity and a second relative light intensity. The first relative light intensity is the strongest light intensity, the second relative light intensity is 50% of the strongest light intensity, the first relative light intensity corresponds to an angle of 0°, the second relative light intensity corresponds to a half-value angle, and the half-value angle is between ?15° and 15°. In the narrow angle state, a third relative light intensity at each angle between 20° and 60° or each angle between ?20° and ?60° is lower than 20% of the strongest light intensity.

Abstract: A display device including a first light emitting unit, a second light emitting unit, a first optical layer and a second optical layer is disclosed. The first optical layer is disposed on at least one of the first light emitting unit and the second light emitting unit, and the first optical layer includes a collimating layer. The second optical layer is disposed on the first light emitting unit. The second optical layer is configured to scatter a first light emitted from the first light emitting unit but does not scatter a second light emitted from the second light emitting unit.

Abstract: An anti-allergen fabric is woven by warp yarns and weft twines, wrap twines and weft yarns, or wrap twines and weft twines. Each of the wrap twines or weft twines is formed of a plurality of yarns. The anti-allergen fabric has a mean pore size not greater than 9 ?m. Therefore, the anti-allergen fabric has advantages of relatively better anti-allergen effect, longer duration in use and lower manufacturing cost.

Abstract: A bedding in accordance with one embodiment of the invention is disclosed to include a plurality of sheet members, and a structure for detachably joining the sheet members such that the sheet members are detachable for cleaning to remove dust mite. In an alternate form of the invention, the bedding includes a sheet member folded or rolled into a multilayer structure, and a structure for securing the multilayer structure in shape.

Abstract: An allergen-barrier fabric, woven from different fibers with various mix ratios, or 100% single fiber. The fabric has warp and filling yarns total from 253 to 2400 thread counts per square inch, generating a mean pore size ranging from 0.2 to 10 microns, thus being capable of barring minute allergen particles while retaining superior air permeability and comfort.

Abstract: A bedding in accordance with one embodiment of the invention is disclosed to include a plurality of sheety members, and a structure for detachably joining the sheety members such that the sheety members are detachable for cleaning to remove dust mite. In an alternate form of the invention, the bedding includes a sheety member folded or rolled into a multilayer structure, and a structure for securing the multilayer structure in shape.