Abstract: Pixel control structure for use in a backplane for an electronic display, including a transistor that has a gate, a source, a drain, and an organic semiconductor element. The pixel control structure is formed by a first patterned conductive layer portion, a second patterned conductive layer portion, a dielectric layer portion, and an organic patterned semiconductive layer portion. The dielectric layer portion comprises an overlap region defined by overlap of the second conductive layer portion over the first conductive layer portion. The overlap region defines an overlap boundary, defined by an edge portion of the first patterned conductive layer portion and an edge portion of the second patterned conductive layer portion. The patterned semiconductive layer portion extends over the overlap region and away from the overlap region so as to extend from both first and second edge portions.

Abstract: A method of controlling an electronic display having a plurality of pixels settable in a first operating level, a second operating level and an intermediate operating level, the method comprising the step of setting the pixels in a preparatory intermediate operating level immediately prior to setting the pixels in a desired intermediate operating state. At an end of a frame i?1, for example, it is possible to drive a pixel from a level P0 further towards white to reach reflection level Pn or to stop driving it, or to switch a control voltage to an apposite polarity and arrive at a lower level. Levels P1 and P2 present embodiments of preparatory intermediate levels used to drive pixels in accordance with the invention. For example, levels 2, 4, and 6 may be obtained from the preparatory level P1. Levels 3, 5, and 7 may be obtained from the preparatory level P2.

Abstract: The invention relates to a device (35) comprising a multilayered structure (35a) with a first portion and a second portion wherein the first portion is conceived to be rolled about a first roller (38), said device comprising a second roller (39) for receiving the second portion for at least partially counteracting the effects of mechanical strain induced in the multilayered structure upon said rolling. The first roller (38) is rotated in a first direction, whereby the second roller (39) is rotated in a second direction. Preferably, the diameters of the first roller (38) and the second roller (39) are equal. Alternatively, the edge portions A, B of the multilayer structure (34a) are suitably interconnected by stoppers (33a, 33b) for preventing creeping.

Abstract: A display driving arrangement is described wherein, during a scan line driving phase, a column driver is controlled to provide a plurality of driving column voltages to the source terminals and the row driver is controlled to provide scanning row selection voltages to the gate terminals for sequentially updating the each pixel having an initial pixel state, voltages with said plurality of driving column voltages to attain, for each initial pixel state, an initial common pixel state. During a common driving phase the column driver is controlled to provide a uniform column voltage to the source terminals to update the plurality of pixel voltages with a uniform column voltage. In addition, the row driver is controlled to provide row select voltages with a gate swing that is lower during the common driving phase than during the row driving phase so as to drive the pixels from a respective the initial common state to a respective final common state.

Abstract: An impact resistant device includes an optical layer and electronics. The optical layer and electronics are comprised in a flexible foil structure which is supported by a backing structure in mechanical contact on a backside of the flexible foil structure. The backing structure includes a deformable material having a viscous response in a critical range, which critical range is defined for a given front impact event by a pressure threshold (?critical) and a stretching threshold (?critical) of the flexible foil structure such that the optical layer and/or electronics are not damaged by the impact event.

Abstract: A device (B) is described for driving a bistable display (A). The device includes a processor (150) for receiving an input signal indicative for a desired luminance of said at least one pixel. The device also includes a controller (100) for determining a sequence of voltage levels to achieve a transition from a present luminance to the desired luminance. The device further includes a voltage generator (108) for generating the sequence of voltage levels. A portion of the sequence is selected from a plurality of mutually different sequence portions, to achieve mutually different luminance transitions. At least a first and a second of this plurality of sequence portions mutually have a same set of voltage levels and have the voltage levels from that set occurring the same number of times, but have the voltage levels in that set occur in a mutually different order.

Abstract: A display device (500) is described with a plurality of pixels (555), each having a pixel state (P) that is driven by a driving voltage differential (VEP) between a pixel voltage (Vpx) applied to a pixel terminal (101) of the pixel and a common voltage (VCE) applied to a common terminal (102) of the pixel. In a first pixel driving state, wherein pixels are driven to a first colour, a common voltage is provided to the common terminals (102) with a first polarity. In a second pixel driving state, wherein pixels are driven to a second colour, a common voltage is provided to the common terminals (102) with a second polarity opposite to the first polarity. An absolute value of the common voltage (VCE) in the first and second pixel driving state is higher than a maximum absolute value of the column voltage (Vcol) in the corresponding pixel driving state.

Abstract: A lookup table provides voltage waveforms for transitions between a plurality of discrete pixel states forming a set that can be ordered in consecutive states according to a reflectivity of the pixel. An image controller repeatedly executes, in a consecutive drive phase, the steps of retrieving an initial state and update state, matching, when the initial and update states are different, in the ordered set of pixel states of the lookup table, a consecutive state and a corresponding consecutive waveform, the consecutive state forming a path, according to the consecutive drive phase, from the initial state to the update state in the set of pixel states, storing the consecutive state in the memory as new initial state; and controlling a voltage driver to drive the pixel from the initial state to the consecutive state using said consecutive waveform.

Abstract: The invention relates to a device comprising a multilayered structure with a first portion and a second portion wherein the first portion is conceived to be rolled about a first roller, said device comprising a second roller for receiving the second portion for at least partially counteracting the effects of mechanical strain induced in the multilayered structure upon said rolling. The first roller is rotated in a first direction, whereby the second roller is rotated in a second direction. Preferably, the diameters of the first roller and the second roller are equal. Alternatively, the edge portions A, B of the multilayer structure are suitably interconnected by stoppers for preventing creeping.

Abstract: A display driving arrangement is described wherein, during a scan line driving phase, a column driver is controlled to provide a plurality of driving column voltages to the source terminals and the row driver is controlled to provide scanning row selection voltages to the gate terminals for sequentially updating the each pixel having an initial pixel state, voltages with said plurality of driving column voltages to attain, for each initial pixel state, an initial common pixel state. During a common driving phase the column driver is controlled to provide a uniform column voltage to the source terminals to update the plurality of pixel voltages with a uniform column voltage. In addition, the row driver is controlled to provide row select voltages with a gate swing that is lower during the common driving phase than during the row driving phase so as to drive the pixels from a respective the initial common state to a respective final common state.

Abstract: A display has reduced moire interference. The display has a backplane with a regular array of pixels and a frontplane with a regular array of cells. The backplane and frontplane are laminated together. The width of the distribution of aperture (the total inner cell area above an active pixel area divided by total pixel area) over the display is reduced. Sinusoidally curved walls or other curved pixel edges may be used in the frontplane or backplane to control the distribution.

Abstract: An electro-optic display is produced using a sub-assembly comprising a front sheet, an electro-optic medium; and an adhesive layer. An aperture is formed through the adhesive layer where the adhesive layer is not covered by the electro-optic medium, and the sub-assembly is adhered to a backplane having a co-operating member with the aperture engaged with a co-operating member, thus locating the sub-assembly relative to the backplane. In another form of electro-optic display, a chip extends through an aperture in the electro-optic medium and adhesive layer. In a third form, the aforementioned sub-assembly is secured to a backplane and then a cut is made through both backplane and sub-assembly to provide an aligned edge.

Abstract: An electrophoretic display unit is presented that comprises an electrophoretic display panel (1). A medium (5) having embedded therein a plurality of electrophoretic display elements (7) is controlled by a first and a second pixel electrode (6, 22b). In addition a sensor constructed to generate a signal (ST) indicative for a temperature of the display panel and a driver (15) for driving the display panel (1) is provided. The sensor (250) includes a resistance sensor constructed to detect a resistance of the medium (5) between a first (22c) and a second sensor electrode (6), and the driver is controllable according to the resistance detected by the resistance sensor.

Abstract: An electro-optic display is produced using a sub-assembly comprising a front sheet, an electro-optic medium; and an adhesive layer. An aperture is formed through the adhesive layer where the adhesive layer is not covered by the electro-optic medium, and the sub-assembly is adhered to a backplane having a co-operating member with the aperture engaged with a co-operating member, thus locating the sub-assembly relative to the backplane. In another form of electro-optic display, a chip extends through an aperture in the electro-optic medium and adhesive layer. In a third form, the aforementioned sub-assembly is secured to a backplane and then a cut is made through both backplane and sub-assembly to provide an aligned edge.

Abstract: The invention relates to a display structure comprising an electrode layer (3) superposed on a sub-layer (5) wherein a surface of the sub-layer facing the electrode layer is roughened. In particular, the display structure may relate to a TFT stack comprising a layer of an electrode metal corresponding to a pixel electrode (3). The pixel pad together with the data line (1) is used for charging of the pixel pad. The gate electrode (4) used is separated from the source and drain electrode (1, 3) by a dielectric layer (6). The structural layers of the TFT may be deposited on a suitable flexible substrate (7). In order to prevent defects in the light modulating layer (9) from being visible, a surface of the sub-layer (5) underlying the electrode layer (3) is roughened. It is desirable to provide such improvement to, among others, electrophoretic-type displays and liquid crystal-type displays.

Abstract: The invention relates to a flexible display (40) comprising a frontplane (42), positioned on top of the backplane (44). Preferably, the frontplane (44) is laminated on top of the backplane (42). The flexible display (40) further comprises a bonding area (48). In accordance to the invention the frontplane (44) extends over an area (46) substantially corresponding with the bonding area (48). Preferably, the frontplane in the region of the bonding are (48) is provided with spacings (47) for arrangement of suitable electrical contacts for enabling a connectivity to the array of electronic pixels and/or to the array of electro-optic elements. The spacings (47) may be of any suitable shape being arranged individually or being interconnected with each-other to form a sole spacing on top of the bonding area (48).

Abstract: A stacked display (20b) comprises superposed regions for changing between a reflective color state (R, G, B) and a transparent state, which regions form part of a˜bended substrate (20). The substrate (20) may comprise a sequence of portions (1-6) which forms regions having pre-defined color. Each portion (1-6) is electrically connected to a further portion in the sequence by interconnect regions (b?, c?, d?) which form an oversized loop between the regions (1-2, 3-4, 5-6) when the substrate (20) is bent. The regions (1-2, 3-4, 5-6) are filled with a suitable optoelectronic color material (R, G, B).

Abstract: The invention relates to a flexible display comprising a first flexible layer configured to comprise pixels 5 of the flexible display, a second flexible layer superposed on the first flexible layer, which second flexible layer comprises a color filter with a plurality of color elements 1, 2, 3, 4 associated with said pixels, wherein the pixels comprise color sub-pixels 1a, 2a, 3a, 4a, the color elements and/or color sub-pixels being discontinuously arranged to counteract misalignment between respective color sub-pixels and color elements. The color elements 1, 2, 3, 4 are arranged to substantially overlap respective sub-pixels 1a, 2a, 3a, 4a whereby the buffer zones 6a, 6b, 6c, 6d are arranged to overlap a portion of said sub-pixels as well. The invention further relates to a method of manufacturing a flexible display.

Abstract: A method of controlling an electronic display having a plurality of pixels settable in a first operating level, a second operating level and an intermediate operating level, the method comprising the step of setting the pixels in a preparatory intermediate operating level immediately prior to setting the pixels in a desired intermediate operating state. At an end of a frame i?1, for example, it is possible to drive a pixel from a level P0 further towards white to reach reflection level Pn or to stop driving it, or to switch a control voltage to an apposite polarity and arrive at a lower level. Levels P1 and P2 present embodiments of preparatory intermediate levels used to drive pixels in accordance with the invention. For example, levels 2, 4, and 6 may be obtained from the preparatory level P1. Levels 3, 5, and 7 may be obtained from the preparatory level P2.

Abstract: A display panel is described that includes a picture element controllable by an active matrix drive comprising at least one structural element (a), wherein the at least one structural element (a) comprises a plurality of sub-units (b1, b2, b3) whose electrical connectivity (c1, c2, c3) is alterable for repairing of an electrical malformation related to the structural element (a).