Abstract: The present invention relates to a tubular lighting device (1) comprising a light engine (10) and a flexible material sheet (11) wrapped around said light engine (10) such that a tubular housing enclosing said light engine (10) is formed. The application further discloses an apparatus and method for assembling such a tubular lighting device (1).

Abstract: The present invention relates to a lighting device (1) comprising: a carrier (106, 206, 306), an electrode pattern comprising at least a first carrier electrode (214, 312) arranged on the carrier, and an opto-electronic module (102, 202, 302, 402). The opto-electronic module (102, 202, 302, 402) comprises: a first, a second, a third and a fourth electric contact point arranged to together define a tetrahedron; a first light source (208, 308, 408) arranged to emit light in response to an AC-voltage being applied between the first electric contact point (216, 316, 416) and the second electric contact point (218, 318, 418); and a second light source (210, 310, 410) arranged to emit light in response to an AC-voltage being applied between the third electric contact point (220, 320, 420) and the fourth electric contact point (222, 322, 422).

Abstract: The invention relates to a display device (100-300) that comprises an image display unit (IDU) for displaying a visual image in combination with an adjacent topology display unit (TDU) that can controllably change the topology on a tactile display surface (TDS). Hence both visual and tactile information can be represented and can be related to each other by a control unit (CU).

Abstract: The present invention relates to a light-emitting device (11) comprising a hollow retro reflector (15) having a reflective internal surface comprising at least three surface segments (17a-c) connected at an apex (18); and a solid state light-source (16a-c) attached to said internal surface of the hollow retro reflector and arranged to emit light towards said apex of the hollow retro refector. Various embodiments of the present invention provide uniform light-output from a relatively simple and cheap light-emitting device.

Abstract: The invention relates to a housing (1) for an electrical device wherein an inner surface (2) of said housing has a conductive pattern (3) providing at least one conductive track, said track being arranged to provide local electric interconnection from the housing to at least one enclosed electrical component of said electrical device and/or vice versa, wherein the conductive pattern is fixedly fastened to said inner surface (2) of said housing so that said conductive pattern will break if the housing wall is broken where the conductive pattern is fastened.

Abstract: A reflector device comprising a reflector (106), having an inner surface (120, 122), and at least one solid state light emitting element (114). The inner surface of the reflector comprises first and second surface portions (120, 122), which are flat and which extend in planes intersecting at an angle. The at least one solid state light emitting element (114) is mounted at at least one of said first and second surface portions (120,122) such that a major part of the light emitted from said at least one solid state light emitting element (114) illuminates the other one of said first and second surface portions (120,122).

Abstract: A light output device has scattering regions fabricated on an LED array using a self-aligned process, during which the light of each LED (10) is used to control the deposition process of scattering particles (22) on a photo-sensitive layer (20).

Abstract: A method of driving a display device uses a first display addressing mode, in which the display is addressed sequentially in rows, and wherein a first image is displayed with a first contrast ratio between the lightest and darkest pixels, and with a brightest pixel output state, a darkest pixel output state and a plurality of intermediate grey level output states. In a second mode, the display is addressed sequentially in rows, and a second image is displayed with a second contrast ratio between the lightest and darkest pixels which is greater than the first contrast ratio.

Abstract: A light output device and manufacturing method in which an array of LEDs (34) is embedded in an encapsulation layer (32). An array of cavities (30) (or regions of different refractive index) is formed in the encapsulation layer (32). The cavities/regions (30) have a density or size that is dependent on their proximity to the light emitting diode (34) locations, in order to reduce hot spots (local high light intensity areas) and thereby render the light output more uniform over the area of the device.

Abstract: The present invention relates to a display (10) comprising a vertical stack of at least two different color absorbing layers (14) of pixels (18). The display is characterized in that the pixel resolution of at least two of the layers is different. The present invention also relates to a display system (50) comprising such a display and a method for controlling such a display.

Abstract: A lenticular lens based autostereoscopic display arrangement uses a display arrangement such as an emissive display arrangement or a reflective display arrangement. The interface between adjacent lenticular lenses (49) is interrupted by a light shielding arrangement (50), which extends at least from the lens surface at the interface into the lens structure, thereby providing a shield extending beneath the lens surface. This reduces lateral progression of light in the lenticular lens arrangement and thereby reduces cross talk caused by waveguiding in the lens material.

Abstract: A method is provided of driving an electronic device comprising an array of device elements, each device element comprising particles which are moved to control a device element state, and each device element comprising a collector electrode, and an output electrode. The method comprises: in a reset phase, applying a first set of control signals to control the device to move the particles to the a reset electrode; and in an addressing phase, applying a second set of control signals to control the device to move the particles from the reset electrode such that a desired number of particles are at the output electrode.

Abstract: The present invention relates to an electrophoretic device where a viewing electrode, which is used to attract an electrophoretic medium to a viewing area, is divided into a first (25) and a second (27) sub-electrode which are separated on the viewing area. When the electrophoretic medium is to cover the viewing area, the electrophoretic medium is first collected at one of the sub-electrodes and is then spread over the viewing area by applying a pulse between the sub-electrodes.

Abstract: A drive method is provided for a display device using the movement of 5 charged particles with a pixel area, with each pixel having first and second drive electrodes (20,23; 22) and a pixel electrode (26). The method comprises a reset phase to move the particles in each pixel towards the first drive electrode (20,23), a pixel data loading phase, to cause selected particles either to stay in the vicinity of the first drive electrode (20,23) or move towards the 10 pixel electrode (26), and a drive phase to distribute the particles which have moved towards the pixel electrode over the pixel electrode (26). The address phase is line-by-line but can be made short, and the other phases can be carried out in parallel for all pixels, saving time.

Abstract: A lamp for emitting light, comprising a transparent sheet-like lightguide, with at least one light receiving side, a light emission front surface and a back surface opposite the front surface. The lamp further comprises a plurality of light sources, positioned in an array and optically coupled to at least one light receiving side. The back surface of said lamp comprises a plurality of optical extraction structures, for example provided in parallel curved lines. Furthermore, the lamp is substantially free from light scattering structures in a light path of the light to be emitted.

Abstract: A portable device is provided having a touch sensitive display (100) comprising an active matrix display element (101) and a touch sensitive element (103). The touch sensitive element (103) is disposed on the viewer distal side of the active matrix display element (101) thereby not affecting the display properties. The touch sensitive element (103) comprises a first and second conductive layer (113, 115) each having a plurality of conductors. The conductive layers (113, 115) sandwich a pressure sensitive layer (117) which modifies an electrical conductivity between two conductors of the two conductive layers (113, 115) in response to a pressure point resulting from an applied pressure. Thus, accurate position detection is achieved. The conductors may be aligned with the active matrix and the requirement for calibration may be obviated.

Abstract: A device having touch sensor input functionality, comprises first and second control electrodes (40,42) lying in a common plane. The device is operable in at least two modes, comprising: a first mode in which the light transmission characteristics are altered by controlling the movement of the charged particles under the influence of control signals applied to the first and second control electrodes; and a second mode in which the first and second control electrodes are coupled to a capacitance sensing means, for detecting a change in capacitance caused by the proximity of an object to be detected.

Abstract: The invention relates to a display device (100-300) that comprises an image display unit (IDU) for displaying a visual image in combination with an adjacent topology display unit (TDU) that can controllably change the topology on a tactile display surface (TDS). Hence both visual and tactile information can be represented and can be related to each other by a control unit (CU).

Abstract: A method for forming a sealed cell structure is disclosed. The sealed cell structure comprises first (10) and second (12) substrates that are spaced apart by a plurality of partition walls (14). The partition walls define a plurality of cells (18, 19) between the first and second substrates. At least one of the substrates and the partition walls have a layer (16, 22, 30) of photo-embossing material on them. A latent image is written (112) onto the photo-embossing material, and then the image is developed, thereby causing expansion of the photo-embossing material in the areas (114) according to the pattern of the latent image. The expansion of the photo-embossing material causes the cells to be sealed apart from one another.

Abstract: A reflective display, comprising a plurality of pixels (10), each having a first electrode, a light-modifying layer (12), and a second electrode (3; 16) arranged to enable formation of an electric field in the light-modifying layer (12) through application of a voltage between the electrodes. The pixel (10) further includes an active portion (16) which is switchable between light-modifying states by means of said electric field, and an inactive portion (17). The inactive portion (17) is arranged for reflecting light so as to direct at least a fraction of incoming light (20) impinging on the inactive portion (17) towards the active portion (16). As a result, a contrast ratio of the reflective display is improved, since light is now directed from the inactive portion towards the active portion and thus contributes to the displayed image as observed by a viewer.