Cathdoluminescent display device
AssigneeKoninklijke Philips Electronics N.V.
InventorMichel Cornelis Josephus Marie Vissenberg
Life of this patent
Estimating the term…
Abstract
A display device is provided with a display screen (30) for displaying image information, having a predetermined number of luminescent picture elements (35). In operation, an electron beam (45) is generated by an electron gun (40) and entered into a two-dimensional slalom guide (10), wherein the beam is guided in two mutually perpendicular directions by means of slalom focusing. Subsequently, the electron beam (45) is extracted from a selected cell (56) of the slalom guide (10) towards a corresponding picture element (35). The path of the electron beam (45) in the slalom guide (10) can be fully customized within the guidance plane. Preferably, the guidance plane extends substantially parallel to the display screen (30).
Claims20
A display device, comprising:
- a display screen for displaying image information, having a predetermined number of luminescent picture elements;
- an electron gun for generating an electron beam and
- an electron beam guide for receiving the electron beam at a beam entrance and guiding the electron beam along a beam path to extraction means for extracting the electron beam from the beam guide towards a predetermined picture element of the display screen,
- wherein the electron beam guide comprises a two-dimensional slalom guide arranged in rows and columns that define an array of cells opposite the picture elements, and
- the extraction means are arranged to extract the electron beam from the two-dimensional slalom guide.
A display device, comprising:
- a display screen that includes a plurality of luminescent picture elements;
- an electron emitter system that is configured to generate one or more electron beams,
- an electron beam guide that is configured to:
- receive the one or more electron beams at one or more beam entrances, and
- guide the one or more electron beams along one or more beam paths towards a selected picture element of the display screen, and
- one or more extraction elements that are configured to extract the one or more electron beams from the beam guide in a direction toward the predetermined picture element,
- wherein the electron beam guide comprises a two-dimensional slalom guide arranged in rows and columns defining an array of cells opposite the picture elements.
Dependencies are inferred from the claim text.