摘要:
In a stereoscopic display apparatus having optical directory elements such as lenticular elements (4) extending parallel to each other and being slanted at an angle to one of the rows and columns of picture element the picture elements (2) are positioned out of focus at the optical directory elements, in such a manner that the modulation depth of “dark bands” is minimized.
摘要:
The invention relates to a field emission device, and a method of manufacturing same. The field emission device comprises a gate electrode (140, 340, 440) which is provided with a pattern of electron passing apertures (135, 335, 435). The gate electrode (140, 340, 440) is arranged near particles (110, 310, 410) distributed on a substrate (125, 325, 425), at least a part of said particles (110, 310, 410) being arranged for emitting electrons. By means of the gate electrode (140, 340, 440), an electric field is applicable by means of which emitting particles emit electrons. Particularly good electron emission is obtained, because the pattern of apertures (135, 335, 435) is similar to the distribution of particles (110, 310, 410) on the substrate. This is achieved by means of the manufacturing method, in which the particles (110, 310, 410) are used in an illumination step to mask regions (155, 355) of a photo layer (150, 352). Thus, a pattern is obtained in the photo layer (150, 352), which can be used to obtain a similar pattern in the gate electrode (140, 340, 440) with relative case.
摘要:
A display device comprising a light guide (12), a front plate (14), and an intermediate electromechanically operable foil (16). Two electrode layers (22, 23) are arranged on either side of the foil (16) to induce electrostatic forces on the foil (16) and to bring selected portions of the foil into contact with the light guide (12), thereby extracting light from the light guide (12). The second electrode layer (22) is arranged on the opposite side of the light guide (12) with reference to the foil (16), and separated from the light guide (12) by means of a refractive layer (28). As no electrode layer is required on the light guide itself, the light path of rays extracted from the light guide is cleaner, and the absorption of light is reduced. The light guide can have a thickness such that the light extracted from the light guide per unit length is sufficient to allow for line-at-a-time addressing
摘要:
A three electrode PDP comprises a scan driver (SD) which supplies a substantially sine wave shaped voltage (VS) between first and the second scan electrodes (SEi, CEi), an amplitude of the substantially sine wave shaped voltage (VS) being large enough to sustain plasma cells (PCij), but being too small to ignite the plasma cells (PCij). A data driver (DD) supplies a substantially pulse shaped voltage (VD) to the data electrodes (DEi) for controlling an amount of light produced by the plasma cells (PCij). The sine wave shaped voltage may have a predetermined frequency such that more than one stable light output level is obtained.
摘要:
The present invention relates to an optical imaging system. The system comprises at least one light source for producing at least one light beam (10). Beam shaping optics (11) arranged to expand the at least one light beam (10) in one direction. At le',ast one one-dimensional array of beam switches (1) is arranged to receive the expanded at least one light beam (10) and modulate it to form a line image. A projection lens (12) is provided for projecting said line image. A slow mirror scanner (13) is arranged to scan consecutive line images to form a two-dimensional image.
摘要:
A display for displaying and storing images comprises an optically addressable electrophoretic display (PD) with a stack of a photoconductive layer (PCF) and an electrophoretic layer (EF) being sandwiched between electrodes (E1, E2). An optical addressing means (AD) supplies addressing light (AL) to the photoconductive layer (PCF). A controller (CO) controls a driver (DR1) to supply a drive voltage (DV) between the electrodes (E1, E2) with a value enabling a change of the optical state of the electrophoretic layer (EF) in response to the addressing light (AL) impinging on the photoconductive layer (PCF). Finally, the power consumption of the optical addressing means (AD) is minimized.
摘要:
The invention relates to a method of controlling a display screen, particularly a foil display built up of a number of lines, the display screen comprising at least one light source, a movable element, and selection means for locally bringing the movable element into contact with the light source, in which the selection means comprise row and column electrodes and means for applying control voltage signals to the invention also relates to a display source, a movable element, and selection means for locally bringing the movable element into contact with the light source, in which the selection means comprise row and column electrodes and means for applying control voltage signals to the row and column electrodes. Because of a minimum switching time of pixels, not all pixels, i.e. lines can be activated immediately when the display screen is addressed line by line. To avoid this problem, the invention provides a novel addressing method comprising the step of addressing a group of lines or a part of a group of lines while the light source is switched off, followed by a step of illuminating the display screen for a predetermined interval by switching on the light source.
摘要:
A multiview display device (600) for displaying multiple views, the multiple views having respective viewing angles related to an object to be displayed is disclosed. The display device comprises optical means (1108) for displaying multiple viewing cones, a first one of the multiple viewing cones having an angular distribution (630) of the views relative to the display device; and driving means (1106) for providing the optical means (1108) with sets of image data corresponding to the respective views. The sets of image data are provided such that the angular distribution (630) has a first part of adjacent views with increasing viewing angle and a second part of adjacent views with decreasing viewing angle and the angular distribution (630) has a first one of the views in between a maximum view which corresponds to a maximum viewing angle and a minimum view which corresponds to a minimum viewing angle.
摘要:
A display device for displaying a three dimensional image such that different views are displayed according to the viewing angle has a display panel with a plurality of separately addressable pixels for displaying said image. The pixels are grouped such that different pixels in a group correspond to different views of the image. The pixels are configured in colour clusters for each physical location within the image, a cluster comprising three pixel groups each corresponding to a different primary colour. A display driver controls a transmission characteristic of each pixel to generate an image according to received image data. The drive signals applied to each pixel in the display panel are adjusted using colour correction values that vary the optical transmission of each pixel within a group and each group within a cluster so as to produce an image colour for each cluster that is independent of viewing direction.
摘要:
A display device (1) comprises a luminescent display screen (15), and means for directing electrons towards the display screen (15). Said means comprises comprise an arrangement of at least three plates (36, 41, 42), with a middle plate (36) having selection apertures, and selection electrodes associated with the selection apertures. The selection apertures, the selection electrodes and the plates are arranged for having the electron currents, on their way from a source to the electroluminescent screen, selectively pass the apertures in the middle plate and alternately run at opposite sides of the middle plate. An anti-leakage layer (44 eg) for providing in operation a tunneling counteracting potential is provided on a plate of the arrangement to prevent leakage electrons through gaps between the middle plate and an adjacent plate.