Koninklijke Philips Corporation N.v.

Gerardus Petrus Karman

Willem Lubertus Ijzerman

Hugo Johan Cornelissen

Tim Dekker

Marc Wilhelmus Gijsbert Ponjee

Volker Schoellmann

Marcellinus Petrus Carolus Michael Krijn

Daniel Willem Elisabeth Schobben

Peter-Andre Redert

Frank Anton Van Abeelen

Marcellinus P C M Krijn

Peter Albert Cirkel

Oscar Henrikus Willemsen

A light emitting device comprises a substrate () and an arrangement of light emitting elements () provided over the substrate. The substrate has a contoured surface which defines at least first and second regions (), having normal directions which face in different directions. The light emitting elements () comprise directional light emitting elements, and are provided on the first and second regions (), thereby to define first and second light emission directions. This arrangement provides light source elements on a structured (topographically non-flat) substrate in a device, such that the angular distribution of light emitted by the device can be electronically adapted by controlling the light emission per light-emitting area.

Directional light output devices such as multi-view displays

A multi-view display is arranged to display views directed to respective viewing zones, comprising pluralities of imaging units and color filters, each of said color filters is associated with one of said imaging units, the color filters being arranged according to a first pitch and in a first sequence of colors, and a barrier including a plurality of color portions comprising color filter material, the color portions being arranged according to a second pitch that is substantially equal to twice the first pitch and in a second sequence of colors that corresponds to the first sequence of colors when reversed in order, the barrier is positioned so that light exits the display panel after passing through one color portion and one color filter and the color portions of the barrier are configured to cooperate with the color filters to selectively direct said light to the first and second viewing zones.

Multi-view display

A switchable autostereoscopic display device comprises a display panel having an array of display pixels for producing a display, the display pixels being arranged in rows and columns; and an imaging arrangement for directing the output from different pixels to different spatial positions to enable a stereoscopic image to be viewed. The imaging arrangement is electrically switchable between at least three modes comprising a 2D mode and two 3D modes. The imaging arrangement comprises an electrically configurable graded index lens array. The display can be switched between a number of modes to enable the display to be adapted or to adapt itself to the image content to be displayed and/or the display device orientation.

Autostereoscopic display device

A method and device for generating and/or displaying 3D images include temporarily increasing the depth of content of an image or a part of an image to a high level and afterward the depth of content is decreased to a low level. This temporary increase of the depth of content renders a large 3D effect to the image or the part of the image to which it has been applied. The actual average depth of content can be made relatively low thus reducing fatigue, while the perceived depth of content is relatively high.

Method of identifying pattern in a series of data

A multi-view display () is arranged to provide large viewing zones () while producing little or no cross-talk. The display may include a barrier () comprising a plurality of color portions () that co-operate with color filters (-) in a display panel () to selectively direct light to the viewing zones (). A lenticular screen () may be arranged to create or image light lines onto imaging units () of the display panel () that are spaced from one another, so that adjacent units () are illuminated by light from different lenses (), directed towards different viewing zones (). A light source () may generate the light at positions aligned with boundaries between adjacent lenses (). The imaging units may be operated so that units () displaying information for the first viewing zone () are separated from units () displaying information for the second viewing zone () by units () not used to display information. Adjacent columns of units () may be used to display information to one viewing zone (). The viewing zones () may be enlarged using a scatterer (). A switchable diffuser () or barrier () may be provided so that the display () can operate in different multi-view and/or single view modes.

A multi view display comprising a light emitting element having an optical cavity formed by a first and a second reflecting layer, at least said second reflecting layer being semi-transparent, and a light emitting layer arranged between said reflecting layers, wherein said optical cavity is designed so that light emitted in at least two preferred viewing directions has a higher intensity than light emitted in other directions. The invention is based on interference phenomena in the optical cavity, making it possible to realize a light emitting element that intrinsically emits more light in the preferential viewing directions than in other directions. This emission profile makes the light emitting element very useful in a multi view display, reducing the problems of cross talk.

Multi view display device

A multi view display () is arranged to provide large viewing zones () while producing little or no cross-talk The display may include a barrier () comprising a plurality of color portions () that co-operate with color filters () in a display panel () to selectively direct light to the viewing zones () A lenticular screen () may be arranged to create or image light lines onto imaging units () of the display panel () that are spaced from one another, so that adjacent units () are illuminated by light from different lenses (), directed towards different viewing zones () A light source () may generate the light at positions aligned with boundaries between adjacent lenses () The imaging units may be operated so that units () displaying information for the first viewing zone () are separated from units () displaying information for the second viewing zone () by units () not used to display information Adjacent columns of units () may be used to display information to one viewing zone () The viewing zones () may be enlarged using a scatterer () A switchable diffuser () or barrier () may be provided so that the display () can operate in different multi-view and/or single view modes.

Method and system for providing multiple views directed to multiple viewing zones

A display device for displaying a three dimensional image such that different views are displayed according to the viewing angle. The display device includes a display panel having separately addressable pixels for displaying the image, where the pixels are grouped such that different pixels in a group correspond to different views. The display device further includes a retarder in optical association with the display panel. The retarder includes retarder pixels, where at least one retarder pixel is associated with each corresponding pixel in the display panel. Optical parameters of the retarder pixels are varied as function of the viewing angle associated with the corresponding pixel in the display panel.

Image quality in an image display device

A display device for displaying a three dimensional image such that different views are displayed according to the viewing angle, the display device including a display panel having 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, each pixel in a group being positioned relative to a respective discrete light source, and pixel being separately controllable to vary an optical characteristic of each pixel to generate an image according to received image data. The pixel sizes within a group vary as a function of the viewing angle of the pixels with respect to the respective light source, so that the characteristics of the different views are independent of viewing angle.

Image quality in a 3D image display device

A display device comprises a backlight () and a light modulating layer () such as an LCD device. The backlight () 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 () is an OLED device and the 2D/3D mode switching is achieved by selectively energising all or a subset of parallel control electrodes () of the OLED device.

Switchable 2D/3D display

An apparatus comprising a first cell (), said first cell comprising a plurality of first elements (), 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 (), superimposed on the first cell, said second cell comprising a plurality of second elements (), 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.

Reflective stereoscopic display with first and second liquid crystal cells

A reflective color filter includes: a first domain reflecting visible red colored light at substantially normal angles of incidence; a second domain reflecting invisible infrared colored light at substantially normal angles of incidence and reflecting red colored light at an oblique angle of incidence, greater than zero degrees; a third domain reflecting green red colored light at substantially normal angles of incidence; and a fourth domain reflecting blue colored light at substantially normal angles of incidence. In one configuration, the second domain overlies or underlies the first domain, but not the third or fourth domains. The reflective color filter can be used in a color liquid crystal display device.

Reflective color filter and display device including the same

A reflective filter structure ( ) adapted to reproduce color by reflection, which filter structure comprises a first domain ( ) reflecting visible red color at zero angle of incidence, as well as a second domain ( ) reflecting invisible infrared color at zero angle of incidence. Furthermore, the second domain is adapted to reflect visible red color at a predetermined angle of incidence greater than zero. The invention also relates to a display device based on the reflective filter structure.

Growing community of inventors

's-Gravenhage, Netherlands

Gerardus Petrus Karman