摘要:
An apparatus comprising a first cell (10b), said first cell comprising a plurality of first elements (34b), said first elements being controllable between a non-reflective state, in which electromagnetic radiation having a first polarization is reflected to a first extent, and a reflective state, in which said electromagnetic radiation having a first polarization is reflected to a second extent, said second extent being greater than said first extent. Said apparatus further comprises a second cell (10a), superimposed on the first cell, said second cell comprising a plurality of second elements (34a), said second elements being controllable between a non-reflective state, in which electromagnetic radiation having a second polarization is reflected to a third extent, and a reflective state, in which said electromagnetic radiation having a second polarization is reflected to a fourth extent, said fourth extent being greater than said third extent. Said first and second elements are arranged so that said first polarization is different from said second polarization.
摘要:
This invention relates to a liquid crystal display device (1) for avoiding disclinations comprising a first and a second substrate (2 and 3), said first and second substrates (2 and 3) being located facing one another with a liquid crystal material layer (6) thereinbetween, a first and a second electrode (4 and 5) arranged at said first and second substrates (2 and 3) respectively, said first and second electrodes (4 and 5) being formed on the liquid crystal side of the said first and second substrates (2 and 3), whereby the liquid crystal material layer (6) exhibits zero-pretilt and at least one of the electrodes (4 and 5) at its end parts (7, 9; 8, 10) is connected to at least a first and a second mutually different and adjustable voltage sources, so as to develop a voltage gradient across the electrode and is adapted to exhibit an electrical resistance between the end parts (7, 9; 8, 10).
摘要:
A cholesteric layer switchable between a wavelength-selectively reflective state and a transmissive state is in direct contact with a homeotropic orientation layer. In the reflective state the layer is cholesterically ordered in helices characterized by a helical direction and a helical pitch. The homeotropic layer broadens the distribution of helical axis directions thus rendering the light reflected in the reflective state more diffuse and rendering the color reflected by the cholesteric layer less dependent on viewing angle. Alternatively, the cholesteric layer may be a polymerized layer.
摘要:
A reflective filter structure (30) adapted to reproduce colour by reflection, which filter structure comprises a first domain (31) reflecting visible red colour at zero angle of incidence, as well as a second domain (34) reflecting invisible infrared colour at zero angle of incidence. Furthermore, the second domain is adapted to reflect visible red colour at a predetermined angle of incidence greater than zero. The invention also relates to a display device based on the reflective filter structure.
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. 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 grey scale correction values that vary the optical transmission of each pixel within a group so as to produce an image grey scale for each point in the image that is independent of viewing direction.
摘要:
The invention relates to an optically anisotropic body, such as a compensation foil or a micro-lens array, having a desired pattern of optical properties. Said body is obtainable by a method wherein a non-uniform electric and/or magnetic field is applied over a body comprising a polymerizable electro-optical and/or magneto-optical material, such as a LC monomer, thus inducing a desired molecular pattern. The pattern is made permanent by polymerising the electro-optical and/or magnetooptical material.
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 multi view display (49) is arranged to provide large viewing zones (23,24) while producing little or no cross-talk The display may include a barrier (20) comprising a plurality of colour portions (20a, 20b, 20c) that co-operate with colour filters (19a-19f) in a display panel (14) to selectively direct light to the viewing zones (23, 24) A lenticular screen (30) may be arranged to create or image light lines onto imaging units (32a, 32f) of the display panel (14) that are spaced from one another, so that adjacent units (32a, 32f) are illuminated by light from different lenses (30a, 30b, 30c), directed towards different viewing zones (23, 24) A light source (35) may generate the light at positions aligned with boundaries between adjacent lenses (30a, 30b, 30c) The imaging units may be operated so that units (32a, 32b) displaying information for the first viewing zone (23) are separated from units (32d, 32e) displaying information for the second viewing zone (24) by units (32c, 32f) not used to display information Adjacent columns of units (32a, 32b) may be used to display information to one viewing zone (23) The viewing zones (23, 24) may be enlarged using a scatterer (36) A switchable diffuser (40) or barrier (48) may be provided so that the display (49) can operate in different multi-view and/or single view modes
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. 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 intensity correction values that vary the optical transmission of each pixel within a group so as to produce an intensity for each point in the image that is independent of viewing direction.
摘要:
A display device (50) for displaying a three dimensional image such that different views are displayed according to the viewing angle (D), the display device including a display panel (52) having a plurality of separately addressable pixels (54) for displaying said image, the pixels being grouped such that different pixels in a group correspond to different views; a retarder (56) in optical association with the display panel, the retarder comprising retarder pixels (58), at least one retarder pixel being associated with each corresponding pixel in the display panel, wherein optical parameters of the retarder pixels (58) are varied as function of the viewing angle associated with the corresponding pixel (54) in the display panel.