Patents by Inventor Gerardus Karman

Gerardus Karman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070052699
    Abstract: 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.
    Type: Application
    Filed: September 30, 2004
    Publication date: March 8, 2007
    Applicant: KONINKLIJKE PHILLPS ELECTRONICS N.V.
    Inventors: Gerardus Karman, Siebe De Zwart
  • Publication number: 20070040778
    Abstract: 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.
    Type: Application
    Filed: September 30, 2004
    Publication date: February 22, 2007
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Gerardus Karman, Volker Schoellmann
  • Publication number: 20070018585
    Abstract: 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 inform
    Type: Application
    Filed: September 23, 2004
    Publication date: January 25, 2007
    Inventors: Willem Ijzerman, Hugo Cornelissen, Tim Dekker, Gerardus Karman
  • Publication number: 20060279680
    Abstract: 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.
    Type: Application
    Filed: September 9, 2004
    Publication date: December 14, 2006
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Gerardus Karman, Volker Schoellmann
  • Publication number: 20060279547
    Abstract: 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.
    Type: Application
    Filed: September 30, 2004
    Publication date: December 14, 2006
    Inventors: Gerardus Karman, Volker Schoellmann
  • Publication number: 20060250338
    Abstract: 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).
    Type: Application
    Filed: July 30, 2004
    Publication date: November 9, 2006
    Inventors: Gerardus Karman, Barry Mos
  • Publication number: 20060187179
    Abstract: A display device comprises a backlight (6) and a light modulating layer (5) such as an LCD device. The backlight (6) can be controlled to operate as a single homogenous light source for producing 2D images or a series of narrow parallel light sources for producing 3D images. Preferably, the backlight (6) is an OLED device and the 2D/3D mode switching is achieved by selectively energising all or a subset of parallel control electrodes (11) of the OLED device.
    Type: Application
    Filed: July 22, 2004
    Publication date: August 24, 2006
    Inventors: Gerardus Karman, Marcellinus Krijn, Volker Schoellmann
  • Publication number: 20060158584
    Abstract: The present invention provides a reflective color liquid crystal display (400) comprising a holographic reflector (403) as well as a combination of an absorbing color filter (401) and a diffusive reflector (404). The holographic reflector (403) provides for saturated colors when the display is viewed from a particular direction, and the absorbing filter (401)/diffusive reflector (404) combination provides for acceptable color sutaration when the display is viewed from other directions. Thereby the advantages of a conventional LCD, having a absorbing filter/diffusive reflector combination only, is combined with the advantages of a LCD having a holographic reflector only.
    Type: Application
    Filed: June 8, 2004
    Publication date: July 20, 2006
    Applicant: Koninklijke Philips Electronics, N.V.
    Inventor: Gerardus Karman
  • Publication number: 20060014088
    Abstract: 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.
    Type: Application
    Filed: October 27, 2003
    Publication date: January 19, 2006
    Applicant: Koninklike Philips Electronics N.V.
    Inventors: Dirk De Boer, Dirk Broer, Gerardus Karman, Armanda Nieuwkerk, Emiel Peeters, Blanca Van Der Zande
  • Publication number: 20050254113
    Abstract: 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.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 17, 2005
    Inventors: Peter Cirkel, Gerardus Karman
  • Publication number: 20050105026
    Abstract: 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.
    Type: Application
    Filed: January 13, 2003
    Publication date: May 19, 2005
    Inventors: Gerardus Karman, Ciska Doornkamp
  • Publication number: 20050012882
    Abstract: 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.
    Type: Application
    Filed: August 9, 2004
    Publication date: January 20, 2005
    Inventor: Gerardus Karman