摘要:
The display panel (21) comprises a light guide (2), a second plate (4) and a movable element (3) between both plates for locally decoupling light out of the light guide (2). Voltages, applied to electrodes (5,6 resp. 25), associated with the light guide (2), the second plate (4) and the movable element (3), locally bring the movable element (3) into 5 contact with the light guide plate (2) or the second plate (4). If, between the light guide (2) and the first electrodes (5) a layer (51) is present with a second refractive index being smaller than the first refractive index of the light guide (2), and the light guide (2) is positioned between the first electrodes (5) and the movable element (3), absorption of the light transported through the light guide plate (2) is reduced, providing a display panel (21) with 10 improved power efficiency.
摘要:
The invention relates to a vacuum display device comprising a display screen (30) having picture elements (35), cathode means (20) for generating a plurality of electron beams (EB), each corresponding to one of the picture elements (35), and addressing means (41,42) for addressing the picture element (35) through modulation of the intensity of an electron beam corresponding to the picture element (35). A channel structure (10) is arranged adjacent the cathode means (20). The channel structure (10) comprises a plurality of electron beam guidance cavities (15), each corresponding to one of the picture elements (35), and protects the cathode means (20) from incident ions. The exit (17) of the cavity (15) is smaller than the entrance (16), so that an electron beam (EB) exiting from the cavity (15) has a particularly high brightness and spatial uniformity.
摘要:
The invention relates to an AC plasma display panel (12) of the surface discharge type, and more specifically to the structure of the address electrodes (5) of said panel, and to a method of driving said panel. According to the invention, only one address electrode (5) is used for one out of every two columns. Scan (8) and common (7) electrodes may comprise transparent parts (11). These parts (11) may extend over one out every two cells, in a checkerboard fashion. In a preferred embodiment as shown in FIG. 7, the columns may have alternating wide (15) and narrow (16) cells (2). In the driving method according to the invention, all rows are addressed during an addressing phase, and subsequently all rows are simultaneously sustained during a sustain phase.
摘要:
An optical separating filter separates impinging light into a first and a second part having different properties. The separating filter comprises reflective filters (FR) arranged in funnel shaped structures (F1). Each one of the structures (F1) have an inlet area (IA1) to receive the impinging light (IL) and an outlet area (OA1) smaller than the inlet area. (IA1) to converge reflected impinging light (RL) towards the outlet area (OA1). The structures (F1) comprise a first group of funnel shaped structures (F1) constructed to reflect light which has a first property (C1) towards their respective first outlet areas (OA1) and for transmitting light which has a second property (C2) towards respective second outlet areas (OA2).
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 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:
An optical separating filter separates impinging light into a first and a second part having different properties. The separating filter comprises reflective filters (FR) arranged in funnel shaped structures (F1). Each one of the structures (F1) have an inlet area (IA1) to receive the impinging light (IL) and an outlet area (OA1) smaller than the inlet area. (IA1) to converge reflected impinging light (RL) towards the outlet area (OA1). The structures (F1) comprise a first group of funnel shaped structures (F1) constructed to reflect light which has a first property (C1) towards their respective first outlet areas (OA1) and for transmitting light which has a second property (C2) towards respective second outlet areas (OA2).
摘要:
A plasma picture screen is provided with a front plate, which comprises a glass plate on which a dielectric layer and a protective layer are provided, with a carrier plate provided with a phosphor layer comprising a red and a blue phosphor as well as a green, Tb3+-activated phosphor, with a ribbed structure that subdivides the space between the front plate and the carrier plate into plasma cells filled with a gas comprising xenon, and with one or several electrode arrays on the front plate and the carrier plate for generating corona discharges in the plasma cells. The gas comprises xenon in a proportion of between 5 and 30% by volume.
摘要:
The invention provides a collimator comprising a first collimator face, a second collimator face, and a stack region. The stack region comprises a first layer having a first prismatically shaped top face with a plurality of 1D arranged first prisms having first prism axes, and a second layer having a second prismatically shaped top face with a plurality of 1D arranged second prisms having second prism axes. The first and second prism axes are in a crossed configuration. In a direction from the first collimator face to the second collimator face, the index of refraction of material upstream of the first prismatically shaped top face is larger than that of material downstream of the first prismatically shaped top face, and the index of refraction of material upstream of the second prismatically shaped top face is larger than that of material downstream of the second prismatically shaped top face.
摘要:
An autostereoscopic display device includes a reflection layer for reflecting at least a portion of incident light, a polarization conversion layer arranged over the reflection layer, and an array of lenticular elements arranged over at least a portion of the polarization conversion layer and including a birefringent material. Light having a first state of polarization is configured to pass through the lenticular element array without substantial lenticular element focusing, where the polarization state is transformed by the polarization conversion layer such that the reflected light has a second state of polarization. Light having the second polarization state passes through the lenticular element array with the lenticular element focusing to provide multiple views to different viewing locations.