Sharp Kabushiki Kaisha Corporation

Zeolux Corporation

Allan Evans

Nathan James Smith

Benjamin John Broughton

Thomas Mathew Wynne-Powell

Paul Antony Gass

Diana Ulrich Kean

Kenji Maeda

Emma Jayne Walton

Andrew Kay

Grant Bourhill

Harry Garth Walton

Lesley Anne Parry-Jones

Graham Roger Jones

Marina Vladimirovna Khazova

Alistair Paul Curd

Adrian M S Jacobs

David James Montgomery

Jonathan Francis Mather

Martin David Tillin

Tatsuo Watanabe

Patrick Zebedee

Yoshimitsu Inamori

Stephen Day

Takashi Yasumoto

Gregory Gay

Sunay Shah

Bronje M Musgrave

Michel Sagardoyburu

Adrian Marc Jacobs

Sumanta Talukdar

Gareth Nicholas

Sinead Marie Matthews

A display device is provided that comprises a liquid crystal display panel () for displaying an image by spatial light modulation. The image is represented by a plurality of image elements each having an image data value (). The display device further comprises a display controller () arranged to determine a signal voltage to be applied to the panel () for each image element in dependence upon its image data value () and a secondary data value () for the element, there being a predetermined mapping between the data values and the signal voltage. The secondary data values () are arranged to vary across the image so as to introduce variations in luminance as a result of the mapping. The mapping and secondary data values () are mutually arranged to take account of the signal voltage to on-axis luminance response of the panel () so that the luminance variations introduced on-axis tend to balance locally through spatial averaging to, and hence would not be perceivable by, an on-axis viewer (). The panel () furthermore has a non-linear off-axis luminance to on-axis luminance relationship, so that at least some of the luminance variations introduced off-axis do not balance locally through spatial averaging to, and hence would be perceivable by, an off-axis viewer ().

Display device

A multiple depth display provided for displaying images at different depths comprises a single display device (), for displaying all of the images. An optical system () is disposed in front of the display device (). The optical system comprises first and second spaced-apart partial reflectors () and polarization optics () for providing first and second light paths for first and second images or sequences of images displayed by the device (). The first light path () comprises partial transmission through the first reflector (), partial reflection from the second reflector (), partial reflection from the first reflector (), and partial transmission through the second reflector () towards a viewing region.

Display, instrument panel, optical system and optical instrument

A method of processing image data for display by a display panel of a display device is provided. The method comprises receiving main image pixel data representing a main and side image pixel data representing a side image. In a first processing step, a mapping is performed of the pixel data to signals used to drive the display panel. The mapping is arranged to produce an average on-axis luminance which is dependent mainly on the main image pixel data and an average off-axis luminance which is dependent at least to some extent on the side image pixel data. In a second processing step, the received side image pixel data are processed to emphasize at least one feature of the side image which might otherwise be perceived by a viewer as being de-emphasized in the side image displayed off axis as a result of the first processing step.

Apparatus, display device, and method thereof for processing image data for display by a display panel

A liquid crystal device comprises an active matrix substrate () and a counter-substrate () provided with homeotropic alignment surfaces (). A layer of nematic liquid crystal material is provided between the alignment surfaces () so as to form a vertically aligned nematic device. The substrates () carry a pixel electrode arrangement and a counter-electrode arrangement which define a plurality of pixel regions. Each of least some of these regions has a pixel electrode (), which may be split into two halves, and a counter-electrode () which are arranged to apply an electric field for controlling the liquid crystal director () out-of-plane tilt angle. A further electrode (), for example in the form of a plurality of parallel fingers, cooperates with at least one of the other electrodes () to apply a second electric field for controlling the director in-plane azimuth angle. Such a device may be used, for example, as a switchable public/private display.

Liquid crystal device

A display device is provided that comprises a liquid crystal display panel for displaying an image by spatial light modulation, and circuitry for switching liquid crystal in the panel between having a first configuration in a first mode to cause an image displayed using the panel to be discernible from a wide range of viewing angles, and having a second configuration in a second mode to cause an image displayed using the panel to be discernible substantially only from within a narrow range of viewing angles. Several types of display panel to achieve such in-panel switching between public and private viewing modes are disclosed.

Display device and liquid crystal display panel

A single view display of reduced power consumption is provided. The display comprises a display device for displaying the single view and an optical system for concentrating light modulated by the single view into a reduced angular range. A viewer direction determining system determines the direction of a viewer relative to the display and controls the display device and the optical system so that the angular range includes the direction of the viewer.

Single view display

An ion mobility spectrometer includes a plurality of substrates defining a measurement region for receiving a singular laminar gas flow without any carrier or sheath gas. The measurement region includes an ionization region that is continuous with a detection region. An ionizing electrode, which may include a plurality of asymmetric electrodes, produces ions in the gas sample within the ionization region. The ionizing electrode may apply a time varying voltage to the gas sample to generate a time dependent ion production. A field generating electrode generates an electric field to deflect the ions in the gas sample, and a detection electrode array detects the deflected ions within the detection region. A controller is configured to determine ion species based on the detection of ions by the detection electrode array. The detection electrode array may include a plurality of detection electrodes, and the controller may be configured to differentiate ion species based on which ions are detected by which one of the detection electrodes.

Integrated ion mobility spectrometer

A display device having a display panel for displaying an image by spatial light modulation includes a plurality of pixel groups, each pixel group including a first pixel having a first type of luminance against viewing angle response, and a second pixel having a second type of luminance against viewing angle response, wherein the first and second luminance against viewing angle responses are different from one another. The display device further includes a controller operatively coupled to each of the plurality of pixel groups, wherein the controller is configured to drive each of the plurality of pixel groups such that on average the plurality of pixel groups simultaneously provide a predetermined on-axis luminance and an predetermined off-axis luminance for a region of the image corresponding to each pixel group.

Angular dependent pixels for trick view

A display device includes a first layer having an optically active display portion, a second layer including a photovoltaic element, and a third layer including electronics operatively coupled to the first layer, wherein the electronics are configured to drive the optically active display portion. Further, the second layer is arranged between the first and third layers.

Integrated display and photovoltaic element

A multiple view display comprises a parallax optic such as a parallax barrier () and a spatial light modulator () having a plurality of pixels arranged as rows and columns. The parallax optic () cooperates with the pixel structure to create a plurality of primary viewpoint-corrected viewing windows. The rows are arranged as groups and the parallax elements are arranged as rows. Each parallax element is aligned with a respective group of rows of the pixels. The pixels comprise sets of pixels of different colors arranged so that the sequence of visible colors viewable in each viewing window through each parallax element of each row of parallax elements is different from the sequence of pixel colors visible through the or each nearest parallax element in the or each adjacent row of parallax elements.

Multiple view display

A display comprises a backlight (-) and a spatial light modulator () such as a liquid crystal device for modulating light from the backlight (-). The backlight has a light-output surface () with a first set of regions in the form of parallel evenly spaced strips (). In a multiple-view mode of the display, these strips () emit light whereas the remainder of the output surface () is dark. In a single-view mode of operation of the display, the whole of the output surface () emits light substantially evenly across the display area of the modulator ().

Display including backlight operable in 2D and 3D modes

A multi-depth display apparatus comprises: a display panel comprising pixels arranged to display first image and second images; and a direction changing layer arranged so that light forming said first and second images enters the layer and then exits the layer, wherein: in relation to the light forming said first image, the direction of the light is changed by the layer so that the light exiting the layer is changed in direction by a first angle relative to the light entering the layer; in relation to the light forming said second image, the direction of the light is changed by the layer so that the light exiting the layer is changed in direction by a second angle relative to the light entering the layer; and said first and second angles are different to create a difference in perceived depth between said first and second images when viewed by a user.

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Oxford, United Kingdom

Allan Evans