Patents by Inventor Jurgen Hoppenbrouwers

Jurgen Hoppenbrouwers 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: 20080111799
    Abstract: A driver (DD, SD, PD1, PD2) drives a display panel which comprises a first set of light emitting elements (PL1) and a second set of light emitting elements (PL2). The driver (DD, SD, PD1, PD2) comprises a data driver (DD) which receives a first set of input image signals (R) representing a first color to supply a first set of data signals (RD 1) to the first set of light emitting elements (PL1), respectively. The data driver (DD) further receives a second set of input image signals (B) representing a second color to supply a second set of data signals (BD1) to the second set of light emitting elements (PL2), respectively. A lowpass filter (LPF) is provided to obtain the second set of data signals (BD1) having a bandwidth being smaller than a bandwidth of the first set of data signals (RD1).
    Type: Application
    Filed: May 11, 2005
    Publication date: May 15, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Jurgen Hoppenbrouwers, Frank Budzelaar, Michiel Adriaanszoon Klompenhouwer, Peter Van De Weijer, Nijs Van Der Vaart, Gerben Hekstra, Nico Cordes
  • Publication number: 20080018632
    Abstract: A driver (DD, SD, PD1, PS1, PD2, PS2) supplies, at a frame rate, a first current (I1) with a first duty cycle being smaller than one to a first light emitting element (PL1) of an active matrix display (AMD) and a second current (I2) to a second light emitting element (PL2) of the active matrix display (AMD). The second light emitting element (PL2) has a shorter lifetime than the first light emitting element (PL1). The driver (DD, SD, PD1, PS1, PD2, PS2) limits controls the second duty cycle to be larger than the first duty cycle.
    Type: Application
    Filed: June 13, 2005
    Publication date: January 24, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Claus Cordes, Frank Budzelaar, Ingrid Maria Vogels, Jurgen Hoppenbrouwers, Michiel Klompenhouwer, Nijs Van Der Vaart
  • Publication number: 20070252786
    Abstract: The invention provides for a method and display apparatus (10) having driving circuitry for driving a display panel (24) having a plurality of addressable discharge cells (26) driven by display pulses (DP), including the steps of applying data pulses (DAP) during the time interval between display pulses (DP) and characterized by the step of priming charges for each of the discharge cells (26) by means of the reset discharges so as to reduce the required data voltage, and in particular such a method wherein one TV-field period (TF) is divided into a plurality of sub-fields (SF) all of which are of substantially equal time durations.
    Type: Application
    Filed: April 11, 2007
    Publication date: November 1, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: MAKOTO ISHII, TOMOKAZU SHIGA, SHIGEO MIKOSHIBA, JURGEN HOPPENBROUWERS, DIRK DE BRUIN, BART SALTERS, ROEL VAN WOUDENBERG, SIEBE DE ZWART, RUEDIGER LANGE
  • Publication number: 20070222800
    Abstract: A colour electroluminescent, EL, display device comprising an array of pixels (11) each comprising sub-pixels (1) of two or more colours (R, G, B). For at least one of the colours (R, G, B), the pixel (11) comprises a first sub-pixel (RL, GL, BL) comprising a first EL material and a second sub-pixel (Rc, Gc, Bc) comprising a second EL material. The first EL material is of higher lifetime than the second EL material; the second EL material has better colour points and/or better colour rendition properties than the first EL material. In some embodiments a pixel comprises two red sub-pixels (RL, Rc), two green subpixels (GL, Gc) and two blue sub-pixels (BL, Bc), one sub-pixel of each colour (RL, GL, BL) comprising relatively high lifetime EL material and the other sub pixel of each colour (Rc, Gc, Bc) comprising relatively good colour points EL material. In other embodiments a pixel comprises two blue sub-pixels (BL, Bc) but only one red sub-pixel and one green sub-pixel.
    Type: Application
    Filed: April 15, 2005
    Publication date: September 27, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: David Fish, Mark Childs, Nijs Van Der Vaart, Jurgen Hoppenbrouwers, Roel Van Woudenberg, Franciscus Budzelaar
  • Publication number: 20070182672
    Abstract: An active matrix display comprises a select driver (SD) to drive select electrodes (SE), and a data driver (DD) to supply data (D) to data electrodes (DE). Pixels (10) are associated with intersections of the data electrodes (DE) and the select electrodes (SE). The pixels (10) comprise a light emitting element (L) and a pixel driving circuit (PD). The pixel driving circuit (PD) receives a power supply voltage (VB) via a power supply electrode (PE), and data (D) via a data electrode (DE) to control a brightness of the light emitting element (L). A power supply (PS) supplies the power supply voltage (VB). The power supply electrodes (PE) are arranged to supply the power supply voltage (VB) to the pixel driving circuits (PD) of lines of pixels (10) extending in the same direction as the select electrodes (SE) or in the same direction as the data electrodes (DE).
    Type: Application
    Filed: March 4, 2005
    Publication date: August 9, 2007
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Jurgen Hoppenbrouwers, Roel Van Woudenberg, Fransiscus Vossen
  • Publication number: 20070008250
    Abstract: In an active matrix electroluminescent display, a plurality of rows of pixels are illuminated, defining at least two bands (10) of rows separated by a non-illuminated band (12). The bands (10) of rows of pixels scroll in the column direction over time, and at most 75% of the rows are illuminated at any point in time. This method is in essence a double bar scrolling method. By scrolling two bars, the required peak brightness is reduced as the effective overall duty cycle is increased. However, the period of illumination can still remain short, so that motion perception remains improved. The scrolling speed can be halved for the same frame rate or else the frame rate can be increased to reduce flicker.
    Type: Application
    Filed: October 5, 2004
    Publication date: January 11, 2007
    Inventors: Jurgen Hoppenbrouwers, Franciscus Budzelaar, Nijs Van Der Vaart
  • Publication number: 20060152452
    Abstract: The display device comprises a display panel (2) having a plurality of display pixels (4) with emissive display elements (11). The display device further comprises duty cycle control means (15, T3) for varying a fraction of the frame period during which the display pixels (4) emit light in dependence on an overall brightness level of an image to be displayed on the display panel. In order to vary the duty cycle a switch, e.g. a power transistor (T3) is connected between the drive transistor (T2) and the light emitting element (11) of each pixel (4) each pixel in a row may be connected to a single duty cycle select line (15).
    Type: Application
    Filed: July 1, 2004
    Publication date: July 13, 2006
    Inventors: Jurgen Hoppenbrouwers, Roel Van Woudenberg, Nijs Van Der Vaart
  • Publication number: 20060145970
    Abstract: A matrix display device comprises a matrix of optically addressable pixels (Pij) which comprise a light sensitive element (LSij) and a pixel light generating element (LGij). The light generating element (LGij) will produce a pixel light (LMij) with a brightness which depends on the state of the light sensitive element (LSij). The state of the light sensitive element (LSij) depends on the amount of light impinging on it. The actual brightness of the pixel light generating element (LGij) may further depend on a voltage across it. The pixels (Pij) are constructed such that a portion of the pixel light (PLMij) generated by the pixel light generating element (LGij) reaches the associated light sensitive element (LSij) of the pixel (Pij). The light sensitive element (LSij) is sensitive to the portion of the pixel light (PLMij) to obtain a feedback of the portion of the pixel light (PLMij) to the light sensitive element (LSij).
    Type: Application
    Filed: January 30, 2004
    Publication date: July 6, 2006
    Inventors: Marcellinus Petrus Carolus Krijn, Franciscus Budzelaar, Jurgen Hoppenbrouwers, Maurizio Maiani, Johannes Josephus Wilhelmus Rosink, Bart Salters
  • Publication number: 20060132452
    Abstract: A matrix display device comprises a matrix of optically addressable pixels (Pij) with a light sensitive element (LSij) which receives data light (Lj) to control a state of the light sensitive element (LSij) depending on the data light (Lj), and a pixel light generating element (LGij) which generates an amount of pixel light (LMij) depending on the state of the light sensitive element (LSij). A select driver (SD) supplies select voltages (SVi) to lines (LRi) of the pixels (Pij), the select voltages (SVi) having a level which does not allow the amount of pixel light (LMij) of the pixel light generating elements (LGij) to be substantially changed for not selected lines (LRi), the select voltages (SVi) having a level which does allow the amount of pixel light (LMij) of the pixel light generating elements (LGij) to be changed for a selected one of the lines (LRi). At least one data light generating device (ALj; LAS) directs the data light (Lj) to the light sensitive element (LSij).
    Type: Application
    Filed: January 30, 2004
    Publication date: June 22, 2006
    Inventors: Marcellinus Petrus Carolus Krijn, Franciscus Budzelaar, Jurgen Hoppenbrouwers, Maurizio Maiani, Johannes Josephus Rosink, Bart Salters
  • Publication number: 20060132385
    Abstract: A matrix display device comprises a matrix of optically addressable pixels (Pij). The pixels (Pij) comprise a light sensitive element (LSij) and a pixel light generating element (LGij). The light generating element (LGij) of a particular pixel (Pij) produces light with a brightness which depends on the state of the light sensitive element (LSij). The state of the light sensitive element (LSij) depends on an amount of light impinging on it. The matrix display further comprises a laser (LAS) which generates laser beam (LB), and a laser scanner (SCA) which scans the laser beam (LB) along the pixels (Pij). At the instant the laser beam (LB) impinges on the light sensitive element (LSij), the brightness of the laser beam (LB) determines the state of the light sensitive element (LSij), and thus the state of the pixel light generating element (LGij).
    Type: Application
    Filed: February 2, 2004
    Publication date: June 22, 2006
    Inventors: Marcellinus Petrus Carolus Krijn, Franciscus Budzelaar, Jurgen Hoppenbrouwers, Maurizio Majani, Johannes Josephus Rosink, Bart Salters
  • Publication number: 20060028494
    Abstract: A display device comprising a plurality of pixels (26), a light source (23), and addressing means (24, 25) for coupling a selected pixel to said light source to thereby emit light, wherein the addressing means (24, 25) are arranged to address each pixel using pulse-width modulation (PWM). Further, the display comprises means (20) for amplitude modulating the intensity of said light source (23). The combination of the two modulations generates an exponentially distributed emitted light intensity, enabling proper gray scale rendering for a limited resolution in the time domain.
    Type: Application
    Filed: December 5, 2003
    Publication date: February 9, 2006
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Siebe De Zwart, Volker Schoellmann, Peter Duine, Ruediger Lange, Oscar Willemsen, Roel Van Woudenberg, Jurgen Hoppenbrouwers, Johannes Marra
  • Publication number: 20050082957
    Abstract: In a flatpanel display apparatus comprising plasma discharge cells (c) having sustain electrodes (Su) and scan electrodes (Sc), a drive circuit having a circuit (23) for providing data to the discharge cells (c) incorporating an energy recovery circuit and means for activating the energy recovery circuit is provided. The data supplied to the discharge cells (c) is arranged in subfields, and the means for activating the energy recovery circuit activate the energy recovery circuit only for a part of the total number of subfields.
    Type: Application
    Filed: March 5, 2003
    Publication date: April 21, 2005
    Inventors: Jurgen Hoppenbrouwers, Fransiscus Vossen, Bart Salters